ORCID Profile
0000-0003-2139-8495
Current Organisation
Oak Ridge National Laboratory
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Materials engineering | Functional materials | Nanomaterials | Functional Materials | Materials Engineering | Nanomaterials | Chemical engineering not elsewhere classified | Chemical engineering design | Composite and hybrid materials | Nanotechnology not elsewhere classified |
Hydrogen Production from Renewable Energy | Solar-Photovoltaic Energy | Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in Engineering | Expanding Knowledge in Technology
Publisher: Wiley
Date: 13-07-2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2019
Publisher: IOP Publishing
Date: 10-2022
Abstract: Artificial photosynthesis, converting solar energy to renewable fuels and valuable chemicals, shows a high potential for addressing the exhaustion of fossil fuels and the greenhouse effect. The superior optoelectronic properties of metal halide perovskites (MHPs) make this emerging family of materials promising candidates for efficient solar-to-fuel conversion. However, the issue of stability has been the main obstacle for MHPs based photocatalysis. In this work, we emphasize the major bottleneck that hinders the application of MHPs for photocatalytic solar-to-fuel conversion. After outlining the unstable factors for MHPs based photocatalysis, we analyse recent works in related fields and provide a critical review of approaches to improving the stability of MHPs for the photocatalytic H 2 evolution reaction and CO 2 reduction reaction. We conclude by proposing possible directions for the development of stabilizing MHPs towards efficient and cost-effective solar-to-fuel conversion.
Publisher: Elsevier BV
Date: 06-2019
Publisher: Office of Scientific and Technical Information (OSTI)
Date: 2020
DOI: 10.2172/1784174
Publisher: Wiley
Date: 18-12-2018
Abstract: Oxygen vacancy (V
Publisher: Wiley
Date: 18-05-2020
Publisher: Elsevier BV
Date: 03-2018
Publisher: Wiley
Date: 19-08-2019
Abstract: Photocatalysis for solar-driven reactions promises a bright future in addressing energy and environmental challenges. The performance of photocatalysis is highly dependent on the design of photocatalysts, which can be rationally tailored to achieve efficient light harvesting, promoted charge separation and transport, and accelerated surface reactions. Due to its unique feature, semiconductors with hollow structure offer many advantages in photocatalyst design including improved light scattering and harvesting, reduced distance for charge migration and directed charge separation, and abundant surface reactive sites of the shells. Herein, the relationship between hollow nanostructures and their photocatalytic performance are discussed. The advantages of hollow nanostructures are summarized as: 1) enhancement in the light harvesting through light scattering and slow photon effects 2) suppression of charge recombination by reducing charge transfer distance and directing separation of charge carriers and 3) acceleration of the surface reactions by increasing accessible surface areas for separating the redox reactions spatially. Toward the end of the review, some insights into the key challenges and perspectives of hollow structured photocatalysts are also discussed, with a good hope to shed light on further promoting the rapid progress of this dynamic research field.
Publisher: Wiley
Date: 09-03-2020
Abstract: Atomic co‐catalysts offer high potential to improve the photocatalytic performance, of which the preparation with earth‐abundant elements is challenging. Here, a new molten salt method (MSM) is designed to prepare atomic Ni co‐catalyst on widely studied TiO 2 nanoparticles. The liquid environment and space confinement effect of the molten salt leads to atomic dispersion of Ni ions on TiO 2 , while the strong polarizing force provided by the molten salt promotes formation of strong Ni−O bonds. Interestingly, Ni atoms are found to facilitate the formation of oxygen vacancies (OV) on TiO 2 during the MSM process, which benefits the charge transfer and hydrogen evolution reaction. The synergy of atomic Ni co‐catalyst and OV results in 4‐time increase in H 2 evolution rate compared to that of the Ni co‐catalyst on TiO 2 prepared by an impregnation method. This work provides a new strategy of controlling atomic co‐catalyst together with defects for efficient photocatalytic water splitting.
Publisher: Elsevier BV
Date: 2017
Publisher: Wiley
Date: 02-01-2019
Publisher: Elsevier BV
Date: 03-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6SC00245E
Abstract: Charge transfer has been demonstrated to have a fundamental role in particulate Ta 3 N 5 electrode for achieving high efficient photoelectrochemical water oxidation.
Publisher: Springer Science and Business Media LLC
Date: 05-2020
DOI: 10.1038/S41467-020-15993-4
Abstract: Providing sufficient driving force for charge separation and transfer (CST) is a critical issue in photoelectrochemical (PEC) energy conversion. Normally, the driving force is derived mainly from band bending at the photoelectrode/electrolyte interface but negligible in the bulk. To boost the bulky driving force, we report a rational strategy to create effective electric field via controllable lattice distortion in the bulk of a semiconductor film. This concept is verified by the lithiation of a classic TiO 2 (Li-TiO 2 ) photoelectrode, which leads to significant distortion of the TiO 6 unit cells in the bulk with well-aligned dipole moment. A remarkable internal built-in electric field of ~2.1 × 10 2 V m −1 throughout the Li-TiO 2 film is created to provide strong driving force for bulky CST. The photoelectrode demonstrates an over 750% improvement of photocurrent density and 100 mV negative shift of onset potential upon the lithiation compared to that of pristine TiO 2 film.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CP50295C
Abstract: BiVO4 and many other semiconductor materials are ideal visible light responsive semiconductors, but are insufficient for overall water splitting. Upon loading water oxidation cocatalyst, for ex le Co-borate (denoted as CoBi) used here, onto BiVO4 photoanode, it is found that not only the onset potential is negatively shifted but also the photocurrent and the stability are significantly improved. And more importantly, PEC overall water splitting to H2 and O2 is realized using CoBi/BiVO4 as photoanode with a rather low applied bias (less than 0.3 V vs. counter electrode) in a two-electrode scheme, while at least 0.6 V is needed for bare BiVO4. This work demonstrates the practical possibility of achieving overall water splitting using the PEC strategy under a bias as low as the theoretical minimum, which is the difference between the flat band and proton reduction potential for a photoanode thermodynamically insufficient for water reduction. As long as the water oxidation overpotential is overcome with an efficient cocatalyst, the applied bias of the whole system is only used for that thermodynamically required for the proton reduction.
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier BV
Date: 2022
Publisher: American Association for the Advancement of Science (AAAS)
Date: 29-10-2021
Abstract: Lead halide perovskites can exhibit bright, narrow band photoluminescence but have stability issues related to formation of inactive phases and the loss of lead ions. Hou et al . show that the black, photoactive phase of cesium lead iodide can be stabilized by forming a composite with a glassy phase of a metal-organic framework through liquid-phase sintering. The photoluminescence is at least two orders of magnitude greater than that of the pure perovskite. The glass stabilizes the perovskite under high laser excitation, and about 80% of the photoluminescence was maintained after 10,000 hours of water immersion. —PDS
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC06900A
Abstract: A hybrid photoanode integrating photosystem II with a hematite film is constructed for photoelectrochemical water oxidation.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6EE00526H
Abstract: Spatial charge separation achieved on the anisotropic facets of high symmetry SrTiO 3 nanocrystals for highly efficient photocatalytic overall water splitting.
Publisher: Elsevier BV
Date: 04-2020
Publisher: American Chemical Society (ACS)
Date: 19-11-2021
Publisher: Elsevier BV
Date: 02-2020
Publisher: American Chemical Society (ACS)
Date: 17-01-2018
DOI: 10.1021/JACS.7B10662
Abstract: It has been anticipated that learning from nature photosynthesis is a rational and effective way to develop artificial photosynthesis system, but it is still a great challenge. Here, we assembled a photoelectrocatalytic system by mimicking the functions of photosystem II (PSII) with BiVO
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CP02391A
Abstract: Overall water splitting with STH efficiency exceeding 2.5% using an all earth-abundant dual-photoelectrode device under parallel illumination without bias.
Publisher: Springer Science and Business Media LLC
Date: 20-05-2021
Publisher: AIP Publishing
Date: 09-07-2020
DOI: 10.1063/5.0010722
Abstract: Efficient light harvesting is one of the key prerequisites in improving the solar conversion efficiency for photoelectrochemical water splitting. As classic semiconductors for water splitting, the solid state solution GaN:ZnO based photoanodes exhibit poor water splitting efficiency mainly limited by its light absorption. To overcome this bottleneck, here we report that phosphorus modification shifts the absorption edge of GaN:ZnO from 480 nm to the red end of 650 nm and also leads to one order of magnitude increase of the carrier concentration. Further, taking the surface phosphate groups as anchors, cobalt can be adsorbed, leading to the in situ formation of cobalt phosphate as a cocatalyst for water oxidation, which results in drastically improved photocurrent density and stability. This work highlights the significance of phosphorization treatment in extending the light harvest and changing the surface reaction kinetics for an efficient solar conversion process.
Publisher: Elsevier BV
Date: 2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA07498J
Abstract: Photofuel cells have been demonstrated to be a promising strategy for generating electricity using biomass.
Publisher: Wiley
Date: 25-11-2021
Abstract: The melting behaviour of metal–organic frameworks (MOFs) has aroused significant research interest in the areas of materials science, condensed matter physics and chemical engineering. This work first introduces a novel method to fabricate a bimetallic MOF glass, through melt‐quenching of the cobalt‐based zeolitic imidazolate framework (ZIF) [ZIF‐62(Co)] with an adsorbed ferric coordination complex. The high‐temperature chemically reactive ZIF‐62(Co) liquid facilitates the formation of coordinative bonds between Fe and imidazolate ligands, incorporating Fe nodes into the framework after quenching. The resultant Co–Fe bimetallic MOF glass therefore shows a significantly enhanced oxygen evolution reaction performance. The novel bimetallic MOF glass, when combined with the facile and scalable mechanochemical synthesis technique for both discrete powders and surface coatings on flexible substrates, enables significant opportunities for catalytic device assembly.
Publisher: Wiley
Date: 02-2022
Abstract: Doping is an effective strategy for tuning metal oxide‐based semiconductors for solar‐driven photoelectrochemical (PEC) water splitting. Despite decades of extensive research effort, the dopant selection is still largely dependent on a trial‐and‐error approach. Machine learning (ML) is promising in providing predictable insights on the dopant selection for high‐performing PEC systems because it can uncover correlations from the seemingly ambiguous linkages between vast features of dopants and the PEC performance of doped photoelectrodes. Herein, the authors successfully build ML model to predict the doping effect of 17 metal dopants into hematite (Fe 2 O 3 ), a prototype photoelectrode material. Their findings disclose the critical parameters from the 10 intrinsic features of each dopant. The model is further experimentally validated by the coherent prediction on Y and La dopants’ behaviors. Further interpretation of the ML model suggests that the chemical state is the most significant selection criteria, meanwhile, dopants with higher metal–oxygen bond formation enthalpy and larger ionic radius are favored in improving the charge separation and transfer (CST) in the Fe 2 O 3 photoanodes. The generic feature of this ML guided selection criteria has been further extended to CuO‐based photoelectrodes showing improved CST by alkaline metal ions doping.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6EE03401B
Abstract: A CdS–PSII hybrid PEC cell for overall water splitting contains a biomimetic electron transfer pathway comprising two redox shuttles.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA05725J
Abstract: Herein, we presented a facile and universal synthetic route that can incorporate a series of amorphous metal–phosphorous-derived (denoted as M–P) HER catalysts with p-Si under ambient conditions.
Publisher: Wiley
Date: 17-09-2020
Abstract: This Review examines how the intermarriage of perovskite and metal‐organic framework crystals brings new paradigms for material design and functionality. The strategic combination of halide perovskites and metal–organic frameworks (MOFs) has generated a new family of porous composite materials that will enable new applications, including optoelectronic, catalysis, sensing, and data encryption. This Review surveys the current progress of this exciting new area. Fundamental aspects, including perovskite nucleation and growth, heterojunction electron–hole transfer, electronic structure, and luminescence within confined spaces, are highlighted, with suggestions of approaches by which guest confinement within MOFs can be synthetically designed. We further address the underlying principles and discuss the new insights and tools for the manipulation of these composite materials for the development of synthetic microporous semiconducting composites, as well as new strategies for host–guest interfacial engineering.
Publisher: Wiley
Date: 24-11-2015
Abstract: The photo fuel cell (PFC) is a promising technology for simultaneously converting solar energy and bioenergy into electricity. Here, we present a miniature air-breathing PFC that uses either BiVO4 or W-doped BiVO4 as the photoanode and a Pt/C catalyst as the air-breathing cathode. The PFC exhibited excellent performance under solar illumination and when fed with several types of biomaterial. We found the PFC performance could be significantly enhanced using W-doping into the BiVO4 photoanode. With glucose as the fuel and simulated sunlight (AM 1.5 G) as the light source, the open-circuit voltage increased from 0.74 to 0.92 V, the short-circuit current density rose from 0.46 to 1.62 mA cm(-2) , and the maximum power density was boosted from 0.05 to 0.38 mW cm(-2) , compared to a PFC using undoped BiVO4 as the anode.
Publisher: Wiley
Date: 22-11-2018
Publisher: American Chemical Society (ACS)
Date: 03-06-2021
Publisher: Elsevier BV
Date: 04-2022
Publisher: Springer Science and Business Media LLC
Date: 11-04-2018
Publisher: American Chemical Society (ACS)
Date: 11-10-2022
Publisher: Wiley
Date: 22-10-2019
Abstract: Metal oxides are an important family of semiconductors for effective photoelectrodes in solar-to-chemical energy conversion. Defect engineering, such as modification of oxygen vacancy density, has been extensively applied in tailoring the optoelectric properties of photoelectrodes. Very limited attention has been paid to the influence of metal vacancies. Herein, we study metal vacancies in a typical CuO photocathode for photoelectrochemical (PEC) water splitting. The Cu vacancies can improve the charge carrier concentration, and facilitate the charge separation and transfer in the CuO photocathode. By changing the O
Publisher: American Chemical Society (ACS)
Date: 19-09-2022
Publisher: Wiley
Date: 31-10-2021
Abstract: Oxygen vacancy (V O ) is one of the most common defects in metal oxides (MOs), which endow the MOs with many unique physiochemical properties. Even though V O engineering has been applied in photo(electro)catalysis, there are still significant challenges in the understanding of the formation, structure, and property of V O . The V O can be produced by treating MOs under low oxygen atmosphere or in vacuum ruled by the equilibrium of V O formation, while other types of defects can also be generated simultaneously. Identifying and distinguishing the formation and function of Vo remain highly challenging, thus the scrutiny of defect formation energy and structure of V O is significant in V O research. This review critically revisits the electronic property and structure changes of MOs upon the generation of Vo. It not only provides clues to detect V O , but also specifies the role of V O in a particular material system considering its drastic influence on light harvesting, conductivity, energy level, surface adsorption, and others. The review also presents a perspective on the future research directions toward rational control of the key aspects of Vo in MOs, namely its formation, characterization, and function, for solar energy conversion.
Publisher: Wiley
Date: 03-07-2021
Abstract: 2D non‐layered materials (2DNLMs) featuring massive undercoordinated surface atoms and obvious lattice distortion have shown great promise in catalytic/electrocatalytic applications, but their controllable synthesis remains challenging. Here, a new type of ultrathin carbon‐wrapped titanium nitride nanomesh (TiN NM@C) is prepared using a rationally designed nano‐confinement topochemical conversion strategy. The ultrathin 2D geometry with well‐distributed pores offers TiN NM@C plentiful exposed active sites and rapid charge transfer, leading to outstanding electrocatalytic performance tackling the sluggish sulfur redox kinetics in lithium‐sulfur batteries (LSBs). LSBs employing TiN NM@C electrocatalyst deliver excellent rate capabilities (e.g., 304 mAh g −1 at 10 C), greatly outperforming that of using TiN nanoparticles embedded in carbon nanosheets (TiN NPs@C) as a benchmark. More impressively, a free‐standing electrode for LSBs with a high sulfur loading of 7.3 mg cm −2 is demonstrated, showing a high peak areal capacity of 5.6 mAh cm −2 at a high current density of 6.1 mA cm −2 . This work provides a new avenue for the facile and controllable fabrication of 2DNLMs with impressive electrocatalysis for LSBs as well as other energy conversion and storage technologies.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA18123F
Abstract: The relation between surface states and the photoresponse on a hematite photoanode unraveled in electrochemical way indicates that the distribution of surface states determines the current–potential curves.
Publisher: American Chemical Society (ACS)
Date: 09-2017
Abstract: Photoelectrochemical water splitting provides an attractive way to store solar energy in molecular hydrogen as a kind of sustainable fuel. To achieve high solar conversion efficiency, the most stringent criteria are effective charge separation and injection in electrodes. Herein, efficient photoelectrochemical water oxidation is realized by optimizing charge separation and surface charge transfer of GaN:ZnO photoanode. The charge separation can be greatly improved through modified moisture-assisted nitridation and HCl acid treatment, by which the interfaces in GaN:ZnO solid solution particles are optimized and recombination centers existing at the interfaces are depressed in GaN:ZnO photoanode. Moreover, a multimetal phosphide of NiCoFeP was employed as water oxidation cocatalyst to improve the charge injection at the photoanode/electrolyte interface. Consequently, it significantly decreases the overpotential and brings the photocurrent to a benchmark of 3.9 mA cm
Publisher: Royal Society of Chemistry
Date: 2021
Publisher: Wiley
Date: 30-05-2014
Abstract: Photoelectrochemical (PEC) water splitting is an ideal approach for renewable solar fuel production. One of the major problems is that narrow bandgap semiconductors, such as tantalum nitride, though possessing desirable band alignment for water splitting, suffer from poor photostability for water oxidation. For the first time it is shown that the presence of a ferrihydrite layer permits sustainable water oxidation at the tantalum nitride photoanode for at least 6 h with a benchmark photocurrent over 5 mA cm(-2) , whereas the bare photoanode rapidly degrades within minutes. The remarkably enhanced photostability stems from the ferrihydrite, which acts as a hole-storage layer. Furthermore, this work demonstrates that it can be a general strategy for protecting narrow bandgap semiconductors against photocorrosion in solar water splitting.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2SC06981D
Abstract: In this perspective, we emphasise the importance of stability evaluation in the development of photo(electro)catalysts and related devices towards practical solar water splitting.
Publisher: Elsevier BV
Date: 02-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 16-09-2014
DOI: 10.1039/C4CP03731F
Abstract: Ultra-high onset potential hinders the application of hematite for photoelectrochemical (PEC) water splitting. Herein, a hematite photoanode with an unprecedentedly low onset potential of 0.50 V vs. the reversible hydrogen electrode for PEC water oxidation is reported. The drastically reduced onset potential is mainly ascribed to the passivation of the hematite surface states and the gradient structure made by H2-O2 flame at high temperature.
Publisher: Wiley
Date: 05-02-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9EE02247C
Abstract: We demonstrate the metal-free polymeric semiconductor pTTh as a selective and efficient photocathode for photoelectrochemical oxygen reduction to a high concentration of H 2 O 2 in a cost-effective way.
Publisher: Elsevier BV
Date: 03-2017
Publisher: Elsevier BV
Date: 03-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5EE03802B
Abstract: The integrated architecture enables the Ta 3 N 5 photoanode to approach the theoretical photocurrent limit for solar water splitting.
Publisher: Wiley
Date: 02-08-2017
Publisher: American Chemical Society (ACS)
Date: 12-02-2015
Abstract: The electrode-electrolyte interface chemistry is highly important for photoelectrochemical (PEC) and electrocatalytic water splitting where cations in the electrolyte are often crucial. However, the roles of cations in an electrolyte are much debated and not well-understood. This work reports that the PEC and electrocatalytic water oxidation (WO) activities in basic electrolytes with different cations follow an unexpected trend (Li(+) > K(+) > Na(+)) especially for long-term reaction. Such an abnormal order of activity is found to be the balance effect of two factors: the distinct extents of the weakening of O-H bond on electrode surface after interacting with cations in different electrolytes and the different rates of oxygen reduction reaction (ORR) which turns out to be dominant. Li(+) not only brings the most significant decrease of O-H bond strength but also is most effective for avoiding back reaction, while Na(+) shows the most detrimental effect on WO because of ORR. Our results provide important insight into the roles of cations in WO and demonstrate a new strategy of tailoring the electrode-electrolyte interface via judicious choice of cations in electrolyte for more efficient PEC and electrocatalytic water splitting.
Publisher: Wiley
Date: 16-04-2018
Abstract: Porous single crystals are promising candidates for solar fuel production owing to their long range charge diffusion length, structural coherence, and sufficient reactive sites. Here, a simple template-free method of growing a selectively branched, 2D anatase TiO
Publisher: Wiley
Date: 09-10-2018
Publisher: Elsevier BV
Date: 10-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8CP04021D
Abstract: The energy loss of photoelectrochemical processes can be quantitatively evaluated by analyzing the decoupled photovoltaic and electrocatalytic process.
Publisher: Wiley
Date: 05-01-2021
DOI: 10.1002/EOM2.12075
Publisher: Elsevier BV
Date: 10-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6SC01611A
Abstract: The key to phase junctions for efficient charge separation is to consider both the phase alignment and interface structure.
Publisher: Elsevier BV
Date: 05-2018
Publisher: American Chemical Society (ACS)
Date: 20-12-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CC04455E
Abstract: An efficient Bi 2 Fe 4 O 9 photoanode can be fabricated through surface and bulk defect engineering to achieve a state-of-the-art photoresponse.
Publisher: Wiley
Date: 17-09-2020
Abstract: This Review examines how the intermarriage of perovskite and metal‐organic framework crystals brings new paradigms for material design and functionality. The strategic combination of halide perovskites and metal–organic frameworks (MOFs) has generated a new family of porous composite materials that will enable new applications, including optoelectronic, catalysis, sensing, and data encryption. This Review surveys the current progress of this exciting new area. Fundamental aspects, including perovskite nucleation and growth, heterojunction electron–hole transfer, electronic structure, and luminescence within confined spaces, are highlighted, with suggestions of approaches by which guest confinement within MOFs can be synthetically designed. We further address the underlying principles and discuss the new insights and tools for the manipulation of these composite materials for the development of synthetic microporous semiconducting composites, as well as new strategies for host–guest interfacial engineering.
Publisher: American Chemical Society (ACS)
Date: 12-08-2015
Publisher: Office of Scientific and Technical Information (OSTI)
Date: 12-2019
DOI: 10.2172/1784183
Publisher: American Chemical Society (ACS)
Date: 27-06-2022
Abstract: The co-occurrence of various chemical and biological contaminants of emerging concerns has hindered the application of water recycling. This study aims to develop a heterogeneous photo-Fenton treatment by fabricating nano pyrite (FeS
Publisher: American Chemical Society (ACS)
Date: 09-03-2016
Abstract: The photoelectrochemical water oxidation efficiency of photoanodes is largely limited by interfacial charge-transfer processes. Herein, a metal oxide electron-transport layer (ETL) was introduced at the substrate-electrode interface. Hematite photoanodes prepared on Li(+)- or WO3-modified substrates deliver higher photocurrent. It is inferred that a Li-doped Fe2O3 (Li:Fe2O3) layer with lower flat band potential than the bulk is formed. Li:Fe2O3 and WO3 are proved to function as an expressway for electron extraction. Via introducing ETL, both the charge separation and injection efficiencies are improved. The lifetime of photogenerated electrons is prolonged by 3 times, and the ratio of surface charge transfer and recombination rate is enhanced by 5 times with Li:Fe2O3 and 125 times with WO3 ETL at 1.23 V versus reversible hydrogen electrode. This result indicates the expedited electron extraction from photoanode to the substrate can suppress not only the recombination at the back contact interface but also those at the surface, which results in higher water oxidation efficiency.
Publisher: Wiley
Date: 10-04-2019
Publisher: Wiley
Date: 19-07-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9TA10975G
Abstract: Efficient CuBi 2 O 4 based photocathode with large onset potential (1.1 V SHE ) and high photocurrent density (1.87 mA cm −2 at 0.6 V SHE ) has been fabricated for constructing the unbiased water splitting system with the suitable photoanode.
Publisher: Wiley
Date: 30-07-2020
Publisher: Wiley
Date: 26-03-2021
Publisher: Springer Science and Business Media LLC
Date: 21-04-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TA00834G
Abstract: Carbon contamination on the photocatalysts intereferes the performance analysis of photocatalytic carbon dioxide (CO 2 ) reduction reaction (CO 2 RR).
Publisher: American Chemical Society (ACS)
Date: 08-12-2022
Start Date: 03-2023
End Date: 03-2026
Amount: $530,740.00
Funder: Australian Research Council
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End Date: 12-2027
Amount: $830,715.00
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Amount: $644,398.00
Funder: Australian Research Council
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End Date: 12-2027
Amount: $5,000,000.00
Funder: Australian Research Council
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End Date: 12-2023
Amount: $817,476.00
Funder: Australian Research Council
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End Date: 12-2023
Amount: $396,948.00
Funder: Australian Research Council
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