ORCID Profile
0000-0002-5574-4475
Current Organisation
Ruhr-Universität Bochum
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Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5AY01172H
Abstract: Porous Pd nanotubes were in situ fabricated on a glass-carbon electrode (GCE) via a one-step galvanic replacement reaction by using cheap, flexible, and ultralong copper nanowires as the sacrificial template.
Publisher: Springer Science and Business Media LLC
Date: 19-11-2019
DOI: 10.1038/S41467-019-12997-7
Abstract: The grand challenge in the development of atomically dispersed metallic catalysts is their low metal-atom loading density, uncontrollable localization and ambiguous interactions with supports, posing difficulty in maximizing their catalytic performance. Here, we achieve an interface catalyst consisting of atomic cobalt array covalently bound to distorted 1T MoS 2 nanosheets (SA Co-D 1T MoS 2 ). The phase of MoS 2 transforming from 2H to D-1T, induced by strain from lattice mismatch and formation of Co-S covalent bond between Co and MoS 2 during the assembly, is found to be essential to form the highly active single-atom array catalyst. SA Co-D 1T MoS 2 achieves Pt-like activity toward HER and high long-term stability. Active-site blocking experiment together with density functional theory (DFT) calculations reveal that the superior catalytic behaviour is associated with an ensemble effect via the synergy of Co adatom and S of the D-1T MoS 2 support by tuning hydrogen binding mode at the interface.
Publisher: Springer Science and Business Media LLC
Date: 12-08-2021
DOI: 10.1007/S40820-021-00690-8
Abstract: Thanks to the excellent optoelectronic properties, lead halide perovskites (LHPs) have been widely employed in high-performance optoelectronic devices such as solar cells and light-emitting diodes. However, overcoming their poor stability against water has been one of the biggest challenges for most applications. Herein, we report a novel hot-injection method in a Pb-poor environment combined with a well-designed purification process to synthesize water-dispersible CsPbBr 3 nanocrystals (NCs). The as-prepared NCs sustain their superior photoluminescence (91% quantum yield in water) for more than 200 days in an aqueous environment, which is attributed to a passivation effect induced by excess CsBr salts. Thanks to the ultra-stability of these LHP NCs, for the first time, we report a new application of LHP NCs, in which they are applied to electrocatalysis of CO 2 reduction reaction. Noticeably, they show significant electrocatalytic activity (faradaic yield: 32% for CH 4 , 40% for CO) and operation stability ( 350 h).
Publisher: American Chemical Society (ACS)
Date: 16-04-2021
Publisher: Springer Science and Business Media LLC
Date: 10-01-2017
DOI: 10.1038/SREP39695
Abstract: Non-noble metal nanoparticles are becoming more and more important in catalysis recently. Cu/CuO nanoclusters on highly ordered TiO 2 nanotube arrays are successfully developed by a surfactant-free photoreduction method. This non-noble metal Cu/CuO-TiO 2 catalyst exhibits excellent catalytic activity and stability for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with the presence of sodium borohydride (NaBH 4 ). The rate constant of this low-cost Cu/CuO based catalyst is even higher than that of the noble metal nanoparticles decorated on the same TiO 2 substrate. The conversion efficiency remains almost unchanged after 7 cycles of recycling. The recycle process of this Cu/CuO-TiO 2 catalyst supported by Ti foil is very simple and convenient compared with that of the common powder catalysts. This catalyst also exhibited great catalytic activity to other organic dyes, such as methylene blue (MB), rhodamine B (RhB) and methyl orange (MO). This highly efficient, low-cost and easily reusable Cu/CuO-TiO 2 catalyst is expected to be of great potential in catalysis in the future.
Publisher: Springer Science and Business Media LLC
Date: 29-04-2023
DOI: 10.1038/S41467-023-37545-2
Abstract: The precise construction of photocatalysts with diatomic sites that simultaneously foster light absorption and catalytic activity is a formidable challenge, as both processes follow distinct pathways. Herein, an electrostatically driven self-assembly approach is used, where phenanthroline is used to synthesize bifunctional LaNi sites within covalent organic framework. The La and Ni site acts as optically and catalytically active center for photocarriers generation and highly selective CO 2 -to-CO reduction, respectively. Theory calculations and in-situ characterization reveal the directional charge transfer between La-Ni double-atomic sites, leading to decreased reaction energy barriers of *COOH intermediate and enhanced CO 2 -to-CO conversion. As a result, without any additional photosensitizers, a 15.2 times enhancement of the CO 2 reduction rate (605.8 μmol·g −1 ·h −1 ) over that of a benchmark covalent organic framework colloid (39.9 μmol·g −1 ·h −1 ) and improved CO selectivity (98.2%) are achieved. This work presents a potential strategy for integrating optically and catalytically active centers to enhance photocatalytic CO 2 reduction.
Publisher: American Chemical Society (ACS)
Date: 22-12-2016
Publisher: Research Square Platform LLC
Date: 02-05-2022
DOI: 10.21203/RS.3.RS-1533962/V1
Abstract: Stacking two-dimensional (2D) nanosheets into laminar membranes to create nanochannels has attracted widespread attention at fundamental and practical levels for separation technology. Constructing space-tunable and long-term stable sub-nanometer channels provide original systems for nanofluidic investigations and accurate molecular sieving. Although proof-of-concept for nanolaminate membranes has recently been demonstrated, uncontrollable swelling and the presence of pinholes prevent the scaling up of these membranes. Here, we report a scalable strategy for the preparation of non-swelling covalently functionalized molybdenum disulfide (MoS 2 ) membranes with tunable interlayer space. The capillary height of nanochannels was precisely tuned from 3.5 to 7.7 Å, controlled by the nature of the functional groups attached on the MoS 2 nanosheets, which exhibit minimal swelling in water. We evaluated the relationship between the capillary height, the surface chemistry, the stacking disorder and the sieving behaviors of the membranes in forwards osmosis (FO). We found that water permeation is strictly controlled by the capillary height of the nanochannels and the stacking disorder of the nanosheets. By combining experimental investigations and numerical simulations, we identified that the functionalization with aryl groups induces the formation of an interlayer space of 7.1 Å and interlayer stiffness as low as 5.6 eV Å -2 , leading to controlled stacking defects. We report the fabrication of membranes up to 45 cm 2 , which demonstrate a salt rejection as high as 94.2% for a continuous operating time of 7 days. Our work presents a desalination strategy in FO with a specific energy consumption (SEC) of 4 × 10 -3 kWh m -3 , which compares favorably with commercial FO membranes. We anticipate that this opens avenues for the development of FO membranes for desalination based on nanolaminated structure.
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 04-2019
Publisher: Research Square Platform LLC
Date: 12-06-2021
DOI: 10.21203/RS.3.RS-566621/V1
Abstract: The conversion of CO 2 into desirable multicarbon products such as ethylene and ethanol via the carbon dioxide reduction reaction (CO 2 RR) hold promise to achieve a circular carbon economy. The develop of such a technology is currently h ered by the lack of catalysts, which can drive the reaction at industrially relevant current densities with high efficiency and selectivity. Here, we report a novel strategy for increasing the conversion of CO 2 into hydrocarbon molecules with two or more carbon atoms (C 2+ ) by modifying the surface of bimetallic silver-copper (Ag-Cu) catalyst with aromatic heterocycles such as thiadiazole and triazole derivatives. By combining operando Raman and X-ray absorption spectroscopy with electrocatalytic measurements and analysis of the reaction products, we identified that the electron withdrawing nature of functional groups orients the reaction pathway towards the production of C 2+ species such as ethanol and ethylene and enhances the reaction rates on the surface of the catalyst. As a result, we achieve a maximum Faradaic efficiency for the formation of C 2+ of ≈ 80% and full-cell energy efficiency of 20.3% with a specific current density of 261.4 mA cm -2 for C 2+ using functionalized Ag-Cu electrodes, compared to only 33.8% and 70.6 mA cm -2 for the pristine Ag-Cu electrodes. We anticipate that our strategy can further be extended in order to improve the selectivity of the reaction towards the production of specific multicarbon molecules.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA09045J
Abstract: High electrocatalytic performance of biomimetic exfoliated molybdenum disulfide nanosheets towards the electro-oxidation of alkyl sulfides.
Publisher: Elsevier BV
Date: 03-2017
DOI: 10.1016/J.JCIS.2016.11.061
Abstract: In recent years, shape control has received the most attention in the exploration of Pd nanocrystals (NCs). However, exploring an efficient approach for the systematic production of Pd NCs under similar reaction conditions still presents a significant challenge, which is significantly important to clearly explain the effectiveness of morphology on the catalytic activity of Pd NCs. We designed and accomplished a facile strategy for the morphology transformation between Pd nanosheets and Pd nanotetrahedra by simply controlling the reaction temperature. A growth mechanism was proposed based on TEM images of the time-dependent morphology evolution. The Pd nanosheets and Pd nanotetrahedra exhibit higher activity for the methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR) compared with the benchmark Pd/C catalysts, and their activities are dependent on the morphology. In particular, Pd nanosheets show an increased activity by 3.81 (MOR) and 2.86 (ORR) times due to their large specific surface area and exposed facets.
Publisher: Research Square Platform LLC
Date: 17-10-2022
DOI: 10.21203/RS.3.RS-2131354/V1
Abstract: Dual-atom catalysts possess a significant potential for promoting CO 2 photoreduction to lucrative solar fuels. However, the precise construction of the diatomic sites that simultaneously foster light absorption and catalytic activity is a formidable challenge, as both processes follow distinct pathways in the photocatalyst. Herein, a facile electrostatic-driven self-assembling approach is employed to realize a bifunctional architecture of a diatomic LaNi-Phen (Phenanthroline)/covalent organic framework (COF-5) photocatalyst. The La site acts as an optically active center for the photoinduced generation of carriers, while the Ni site serves as the catalytically active center for highly selective CO 2 -to-CO reduction enabled by directional charge transfer via COF-5. Density functional theory (DFT) calculations and in-situ characterization reveal the efficient synergistic effect of the La-Ni double-atomic sites, leading to decreased reaction energy barriers of *COOH intermediate and enhanced CO 2 -to-CO conversion. As a result, in the absence of any additional photosensitizers, a 15.2 times enhancement of the CO 2 reduction rate (605.8 µmol·g − 1 ·h − 1 ) over that of pristine COF-5 colloid (39.9 µmol·g − 1 ·h − 1 ) and an improvement in CO selectivity to 98.2% are achieved. This work presents a novel strategy for integrating optically and catalytically active centers, which results in a diatomic synergy effect enabling high-performance photocatalytic CO 2 reduction.
Publisher: American Chemical Society (ACS)
Date: 29-12-2017
Abstract: Developing active and bifunctional noble metal-free electrocatalysts is crucial for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in the full water splitting process. A ternary nanoporous sulfur-doped copper oxide (Cu
Publisher: Elsevier BV
Date: 11-2020
Publisher: Hindawi Limited
Date: 13-12-2021
DOI: 10.1155/2021/9823748
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA01912F
Abstract: The ingenious surface and electronic structures endow the ultrathin wrinkle-free Pd 4 Cu 1 nanosheets with enhanced methanol oxidation performance.
Publisher: American Chemical Society (ACS)
Date: 03-10-2021
Publisher: American Chemical Society (ACS)
Date: 26-04-2019
Abstract: Interfaces between metals and semiconducting materials can inevitably influence the magnetotransport properties, which are crucial for technological applications ranging from magnetic sensing to storage devices. By taking advantage of this, a metallic graphene foam is integrated with semiconducting copper-based metal sulfide nanocrystals, i.e., Cu
Publisher: Wiley
Date: 07-06-2019
Abstract: Achieving large-sized and thinly layered 2D metal phosphorus trichalcogenides with high quality and yield has been an urgent quest due to extraordinary physical/chemical characteristics for multiple applications. Nevertheless, current preparation methodologies suffer from uncontrolled thicknesses, uneven morphologies and area distributions, long processing times, and inferior quality. Here, a sonication-free and fast (in minutes) electrochemical cathodic exfoliation approach is reported that can prepare large-sized (typically ≈150 µm
Publisher: Springer Science and Business Media LLC
Date: 22-11-2019
DOI: 10.1007/S40820-019-0324-7
Abstract: The single-atom nanozyme is a new concept and has tremendous prospects to become a next-generation nanozyme. However, few studies have been carried out to elucidate the intrinsic mechanisms for both the single atoms and the supports in single-atom nanozymes. Herein, the heterogeneous single-atom Co–MoS 2 (SA Co–MoS 2 ) is demonstrated to have excellent potential as a high-performance peroxidase mimic. Because of the well-defined structure of SA Co–MoS 2 , its peroxidase-like mechanism is extensively interpreted through experimental and theoretical studies. Due to the different adsorption energies of substrates on different parts of SA Co–MoS 2 in the peroxidase-like reaction, SA Co favors electron transfer mechanisms, while MoS 2 relies on Fenton-like reactions. The different catalytic pathways provide an intrinsic understanding of the remarkable performance of SA Co–MoS 2 . The present study not only develops a new kind of single-atom catalyst (SAC) as an elegant platform for understanding the enzyme-like activities of heterogeneous nanomaterials but also facilitates the novel application of SACs in biocatalysis.
Publisher: Springer Science and Business Media LLC
Date: 03-01-2019
DOI: 10.1038/S41467-018-07947-8
Abstract: MicroRNA exhibits differential expression levels in cancer and can affect cellular transformation, carcinogenesis and metastasis. Although fluorescence techniques using dye molecule labels have been studied, label-free molecular-level quantification of miRNA is extremely challenging. We developed a surface plasmon resonance sensor based on two-dimensional nanomaterial of antimonene for the specific label-free detection of clinically relevant biomarkers such as miRNA-21 and miRNA-155. First-principles energetic calculations reveal that antimonene has substantially stronger interaction with ssDNA than the graphene that has been previously used in DNA molecule sensing, due to thanking for more delocalized 5 s /5 p orbitals in antimonene. The detection limit can reach 10 aM, which is 2.3–10,000 times higher than those of existing miRNA sensors. The combination of not-attempted-before exotic sensing material and SPR architecture represents an approach to unlocking the ultrasensitive detection of miRNA and DNA and provides a promising avenue for the early diagnosis, staging, and monitoring of cancer.
Publisher: American Chemical Society (ACS)
Date: 19-05-2017
Abstract: Tailoring the interfacial structure of Pt-based catalysts has emerged as an effective strategy to improve catalytic activity. However, little attention has been focused on investigating the relationship between the interfacial facets and their catalytic activity. Here, we design and implement Pd-Pt interfaces with controlled heterostructure features by epitaxially growing Pt nanoparticles on Pd nanosheets. On the basis of both density functional theory calculation and experimental results, we demonstrate that charge transfer from Pd to Pt is highly dependent on the interfacial facets of Pd substrates. Therefore, the Pd-Pt heterostructure with Pd(100)-Pt interface exhibits excellent activity and long-term stability for hydrogen evolution and methanol/ethanol oxidation reactions in alkaline medium, much better than that with Pd (111)-Pt interface or commercial Pt/C. Interfacial crystal facet-dependent electronic structural modulation sheds a light on the design and investigation of new heterostructures for high-activity catalysts.
Publisher: Springer Science and Business Media LLC
Date: 10-12-2021
DOI: 10.1038/S41467-021-27456-5
Abstract: The conversion of CO 2 into desirable multicarbon products via the electrochemical reduction reaction holds promise to achieve a circular carbon economy. Here, we report a strategy in which we modify the surface of bimetallic silver-copper catalyst with aromatic heterocycles such as thiadiazole and triazole derivatives to increase the conversion of CO 2 into hydrocarbon molecules. By combining operando Raman and X-ray absorption spectroscopy with electrocatalytic measurements and analysis of the reaction products, we identified that the electron withdrawing nature of functional groups orients the reaction pathway towards the production of C 2+ species (ethanol and ethylene) and enhances the reaction rate on the surface of the catalyst by adjusting the electronic state of surface copper atoms. As a result, we achieve a high Faradaic efficiency for the C 2+ formation of ≈80% and full-cell energy efficiency of 20.3% with a specific current density of 261.4 mA cm −2 for C 2+ products.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9NR00790C
Abstract: A dendritic bi-MOFs (UiO-66-NH 2 @MIL-101(Fe)) heterostructure was prepared, which shows considerable photocatalytic activity, strong light absorption and effective photogenerated carrier separation.
Publisher: Research Square Platform LLC
Date: 16-07-2021
DOI: 10.21203/RS.3.RS-687134/V1
Abstract: Electrochemical synthesis of NH 3 is a carbon-free alternative to the traditional Haber-Bosch process. The challenge with nitrogen reduction reaction (NRR) to NH 3 is cleavage of the inert N≡N triple bond of nitrogen gas. Obtaining NH 3 from environmental pollutants, such as nitrates or nitrites, is a more practical route than NRR. However, reduction of nitrates or nitrites to ammonia is currently h ered by modest Faradaic efficiencies, typically below 10 %. Here, we report a novel heterogeneous catalyst based on iron (Fe) single-atoms supported on two-dimensional MoS 2 (Fe-MoS 2 ) for the nitrate reduction reaction (NO 3 RR). We have found that Fe-MoS 2 exhibits remarkable performance with a maximum Faradaic efficiency of 98 % for NO 3 RR to NH 3 at an overpotential of -0.48 V vs. the reversible hydrogen electrode (RHE) as confirmed by our isotopic nuclear magnetic resonance (NMR) analyses. Density function theory (DFT) calculations reveal that the enhanced selectivity for the production of NH 3 from single Fe atoms supported on MoS 2 is attributed to a reduced energy barrier of 0.38 eV associated with de-oxidation of *NO to *N – the usual potential limiting step in NO 3 RR. We assembled our catalyst in a two-electrode electrolyzer coupled to an InGaP/GaAs/Ge triple-junction solar cell to demonstrate a solar-to-ammonia (STA) conversion efficiency of 3.4 % and a yield rate of 0.03 mmol h -1 cm -2 equivalent to 510 µg h -1 cm -2 . Our results open new avenues for design of single-atom catalysts (SAC) for the realization of solar-driven ammonia production.
Publisher: American Chemical Society (ACS)
Date: 16-10-2019
Abstract: Rational control of the components of noble metal alloys is paramount for achieving satisfactory electrocatalytic performances. Though transition metals are commonly used to modify noble metals, many potential elements remain to be explored. Here, we interstitially modulate hydrogen atoms into RhPd nanoparticles to boost the alkaline hydrogen evolution reaction (HER). The obtained stable RhPd-H nanoparticles exhibit pronounced alkaline HER activity with a small overpotential of 36.6 mV at 10 mA cm
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TA10337A
Abstract: A molybdenum disulfide alladium nanodisk heterostructure was determined to be highly active toward the HER through DFT predictions and experimental verification.
Publisher: Elsevier BV
Date: 2019
Publisher: American Chemical Society (ACS)
Date: 06-04-2023
Publisher: American Chemical Society (ACS)
Date: 20-07-2020
Publisher: Elsevier BV
Date: 08-2014
DOI: 10.1016/J.BIOS.2014.03.002
Abstract: The binding of DNA with graphene oxide (GO) is important for applications in disease diagnosis, genetic screening, and drug discovery. The standard assay methods are mainly limited to indirect observation via fluorescence labeling. Here we report the use of surface plasmon resonance for direct sensing of DNA/GO binding. We show that this can be used for ultra-sensitive detection of single-stranded DNA (ssDNA). Furthermore, the results provide a more direct probe of DNA/GO binding abilities and confirm that hydrogen bonding plays a key role in the interaction between GO and ssDNA. This enables to a novel biosensor for highly sensitive and selective detection of ssDNA based on indirect competitive inhibition assay (ICIA). We report development of such a sensor with a linear dynamic range of 10(-14)-10(-6)M, a detection limit of 10fM and a high level of stability during repeated regeneration.
Publisher: Elsevier BV
Date: 09-2020
Publisher: Elsevier BV
Date: 03-2019
Publisher: American Chemical Society (ACS)
Date: 08-04-2019
DOI: 10.1021/ACS.NANOLETT.8B04104
Abstract: Metallic 1T-phase transition metal dichalcogenides (TMDs) are of considerable interest in enhancing catalytic applications due to their abundant active sites and good conductivity. However, the unstable nature of 1T-phase TMDs greatly impedes their practical applications. Herein, we developed a new approach for the synthesis of highly stable 1T-phase Au/Pd-MoS
Publisher: Springer Science and Business Media LLC
Date: 02-10-2019
DOI: 10.1038/S41467-019-12347-7
Abstract: Moiré superlattices (MSLs) are modulated structures produced from homogeneous or heterogeneous 2D layers stacked with a twist angle and/or lattice mismatch. Expanding the range of available materials, methods for fabricating MSL, and realization of unique emergent properties are key challenges. Here we report a facile bottom-up synthesis of homogeneous MSL based on a wide-gap 2D semiconductor, BiOCl, using a one-pot solvothermal approach with robust reproducibility. Unlike previous MSLs usually prepared by directly stacking two monolayers, our BiOCl MSLs are realized in a scalable, direct way through chemical growth of spiral-type nanosheets driven by screw-dislocations. We find emergent properties including large band gap reduction (∼0.6 eV), two-fold increase in carrier lifetime, and strongly enhanced photocatalytic activity. First-principles calculations reveal that such unusual properties can be ascribed to the locally enhanced inter-layer coupling associated with the Moiré potential modulation. Our results demonstrate the promise of MSL materials for chemical and physical functions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5NR07940C
Abstract: Palladium and platinum core–shell nanostructures with high ORR activity and stability were synthesized by controlling supersaturation.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4NR05761A
Abstract: Palladium porous single-crystalline nanoflowers (PSNFs) with enriched high catalytic activity {100} facets were synthesized using a mild and controllable seed mediated growth method.
Publisher: Springer Science and Business Media LLC
Date: 20-02-2023
Publisher: Research Square Platform LLC
Date: 26-07-2023
DOI: 10.21203/RS.3.RS-3189576/V1
Abstract: The development of highly selective and energy efficient technologies for electrochemical CO 2 reduction combined with renewable energy sources holds great promise for advancing the field of sustainable chemistry. The engineering of copper-based electrodes provides a pathway for the conversion of CO 2 into high-value multicarbon products (C 2+ ). However, the ambiguous determination of the intrinsic CO 2 activity and the maximization of the density of exposed active sites have severely limited the use of Cu for the realization of practical electrocatalytic devices. Here, we report a scalable strategy to obtain a high density of undercoordinated sites by maximizing the exposure of twin-boundary active sites using a direct chrono erometric pulse method. Our numerical investigations predicted that twin-boundaries modulate the adsorption behavior of *CO on the Cu surface, which acts as a key intermediate species associated with the production of multicarbon species. We investigated the consequence of twin-boundary density on dendric Cu catalysts (TB-Cu) by combining transmission electron microscopy, in-situ Raman and X-ray photoelectron spectroscopy with detailed electrochemical measurements. A linear relationship between the Faradaic efficiency of the C 2+ product and the presence of under-coordinated sites was observed, which allowed to directly quantify the contribution of the twin-boundary in Cu-based catalysts on the CO 2 RR properties and the formation of multicarbon products. Using a membrane electrode assembly electrolyzer, the high twin-boundary density Cu electrodes achieve a maximum Faradaic efficiency of 73.2 % for C 2+ product formation and a full cell energy efficiency of 20.2 % at a specific current density of 303.6 mA cm -2 . The TB-Cu was implemented in a 25 cm 2 MEA electrolyzer and demonstrated selectivity of over 62 % for 70 hours together with current retention of 88.4 % at the applied potential of -3.80 V. The catalysts and electrolyzer were further coupled to an InGaP/GaAs/Ge triple-junction solar cell to demonstrate a solar-to-fuel (STF) conversion efficiency of 8.33 %. This work opens new avenues for the design of an undercoordinated Cu-based catalyst for the realization of solar-driven fuel production.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8NR06835F
Abstract: The surface morphology evolution of Au@Pd core–shell nanorods was controlled by adjusting the solution supersaturation.
Publisher: Springer Science and Business Media LLC
Date: 06-04-2023
Publisher: World Scientific Pub Co Pte Lt
Date: 02-2017
DOI: 10.1142/S1793292017500266
Abstract: Nanodendritic Pt-based bimetallic alloys are one promising catalyst with three-dimensional (3D) networks structure composed of integrating branches for electrochemical catalytic reaction. We successfully synthesized dendrites Pt 6 Ir 4 alloy with small size of 20 nm in oleylamine. The dendritic Pt 6 Ir 4 alloy are characterized by high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical tests suggest that the as-prepared dendritic Pt 6 Ir 4 alloy exhibits greatly enhanced ethylene glycol oxidation reaction (EGOR) activity than commercial Pt/C with high EGOR mass activity, anti-poisoning and stability.
Location: No location found
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