ORCID Profile
0000-0002-2811-147X
Current Organisation
Tianjin University
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Wiley
Date: 13-02-2017
Abstract: Manganese-based oxides have exhibited high promise as noncoinage alternatives to Pt/C for catalyzing oxygen reduction reaction (ORR) in basic solution and a mix of Mn
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1CC16341H
Abstract: Highly ordered mesoporous Cr(2)O(3) materials with high specific surface area and narrow pore size distribution were successfully prepared by a vacuum assisted impregnation method. Both 2-dimensional hexagonal and 3-dimensional cubic Cr(2)O(3) mesoporous replicas from SBA-15 and KIT-6 templates exhibit enhanced performance for gas sensors and lithium ion batteries, compared to the bulk Cr(2)O(3) counterpart.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM32173D
Publisher: Wiley
Date: 16-01-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TA13894A
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7NJ03125D
Abstract: Microwave irradiation was adopted to activate gold nanoparticles, which catalysed the growth of monocrystal CdSe nanowires in solution.
Publisher: Springer Science and Business Media LLC
Date: 23-07-2020
DOI: 10.1038/S41467-020-17499-5
Abstract: Multi-carbon alcohols such as ethanol are valued as fuels in view of their high energy density and ready transport. Unfortunately, the selectivity toward alcohols in CO 2 /CO electroreduction is diminished by ethylene production, especially when operating at high current densities ( mA cm −2 ). Here we report a metal doping approach to tune the adsorption of hydrogen at the copper surface and thereby promote alcohol production. Using density functional theory calculations, we screen a suite of transition metal dopants and find that incorporating Pd in Cu moderates hydrogen adsorption and assists the hydrogenation of C 2 intermediates, providing a means to favour alcohol production and suppress ethylene. We synthesize a Pd-doped Cu catalyst that achieves a Faradaic efficiency of 40% toward alcohols and a partial current density of 277 mA cm −2 from CO electroreduction. The activity exceeds that of prior reports by a factor of 2.
Publisher: American Chemical Society (ACS)
Date: 08-03-2012
DOI: 10.1021/IE300109U
Publisher: American Chemical Society (ACS)
Date: 17-10-2022
Abstract: Free energy calculation of small molecules or ion species in aqueous solvent is one of the most important problems in electrochemistry study. Although there are many previous approaches to calculate such free energies, they are based on ab initio methods and suffer from various limitations and approximations. In the current work, we developed a hybrid approach based on ab initio molecular dynamics (AIMD) simulations to calculate the ion solvation energy. In this approach, a small water cluster surrounding the central ion is used, and implicit solvent model is applied outside the water cluster. A dynamic potential well is used during AIMD to keep the water cluster together. Quasi-harmonic approximation is used to calculate the entropy contribution, while the total energy average is used to calculate the enthalpy term. The obtained solvation voltages of the bulk metal agree with experiments within 0.3 eV, and the simulation results for the solvation energies of gaseous ions are close to the experimental observations. Besides the free energies, radial pair distribution functions and coordination numbers of hydrated cations are also obtained. The remaining challenges of this method are also discussed.
Publisher: Elsevier BV
Date: 2013
Publisher: American Chemical Society (ACS)
Date: 20-02-2015
DOI: 10.1021/LA5044415
Abstract: Green and simple synthesis of high-quality colloidal quantum dots (CQDs) is of great importance and highly anticipated yet not fully implemented. Herein, we achieve the direct conversion of natural minerals to highly uniform, crystalline lead sulfide CQDs based on laser irradiation in liquid. The trivial fragmentation of mineral particles by an intense nanosecond laser was found to create a localized high degree of monomer supersaturation in oleic acid, initiating the LaMer growth of uniform CQDs. The photoconductive device made of these CQDs exhibits a competitive temporal response of photocurrent with those highly sensitive photodetectors based on PbS CQDs reported in the literature. Our synthesis strategy paves the way for the most environmentally friendly and convenient mass production of high-quality uniform CQDs.
Publisher: Elsevier BV
Date: 03-2016
Publisher: Wiley
Date: 20-08-2013
Abstract: A novel nitrogen doped hybrid material composed of in situ-formed graphene natively grown on hierarchical ordered porous carbon is prepared, which successfully combines the advantages of both materials, such as high surface area, high mass transfer, and high conductivity. The outstanding structural properties of the resultant material render it an excellent metal-free catalyst for electrochemical oxygen reduction.
Publisher: Wiley
Date: 27-12-2016
Abstract: Atomically and electronically coupled Pt and CoO hybrid nanocatalysts are fabricated for electrocatalytic oxygen reduction reaction. The atomic coupling between the Pt and the CoO endows precise control of the atomic interface between the Pt and the CoO, which directly results in electron donation from the CoO to the Pt, and thus favorable tuning of the electronic structure of the Pt.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA08965F
Abstract: Cation behavior and distribution at the electrochemical interface under both neutral and charged conditions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA01677A
Abstract: Cuprous ions incorporated into a ceria lattice for electrochemical reduction of CO 2 to ethylene with excellent selectivity and stability.
Publisher: Wiley
Date: 21-08-2013
Abstract: Semiconductor materials with an inverse opal structure have previously demonstrated promise for photovoltaic applications. However, their use in solar cells is still restricted by their poor electron transfer properties. Here, highly conductive CdS inverse opal structures are prepared via a multistep process, where CdS inverse opal backbones are first built up on conductive glass substrates via co‐deposition of CdS quantum dots and polystyrene microspheres, followed by calcination, after which subsequent electrodepositon and annealing treatments are applied to transform the fine constituent nanocrystals into larger ones, thus considerably enhancing the electrical conductivity. The obtained CdS networks are tested as anodes in photochemical solar cells and demonstrate conversion efficiency values up to 2.00% under the illumination of one sun. After depositing an additional CdSe layer, the conversion efficiency of the structures is further increased to 2.47%.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TA09325B
Abstract: Highly dense CdTe nanowire arrays were synthesized in solution by laser-driven absorption and desorption of gold catalysts.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7NR01170A
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TA08988C
Abstract: Mesocrystalline cupric oxide with pure phase and clean surface was produced by laser ablation followed by oxidation, and a gas sensor based on the mesocrystal exhibits the highest sensitivity, the fastest response, and the best selectivity ever reported towards ethanol.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2TA00138A
Publisher: Wiley
Date: 16-05-2018
Publisher: Springer Science and Business Media LLC
Date: 24-08-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA04244G
Abstract: The compressive stress at the NiOOH/NiO interface, created through the battery conversion chemistry, is found to influence the OER performance.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CE26899C
Publisher: IOP Publishing
Date: 21-08-2012
DOI: 10.1088/0957-4484/23/36/365601
Abstract: Galvanic replacement (GR) reactions involving active-metal nanoparticles (NPs) as seeds have a number of distinctive features and can produce various noble-metal nanoparticles. The oxide layer on the surfaces of such active-metal seeds may make a remarkable impact on the final products. Taking the Zn/Cu(2+) system as a model, we show that the GR reaction of pure Zn seeds with Cu(2+) ions leads to Cu nanodendrites, while oxide-covered Zn seeds result in ultrafine Cu NPs. We demonstrate here that the oxide layer does not block the GR reaction but slows down its rate. We also show that the growing Cu NPs can eventually detach from their ZnO substrate because of poor adhesion and disperse in the reaction liquid very well. Our studies provide detailed information on mechanisms of the GR reaction involving active-metal seeds, and therefore may be useful for further control of the morphology and properties of products prepared via this approach.
Publisher: American Chemical Society (ACS)
Date: 18-08-2014
DOI: 10.1021/AM5041219
Abstract: Three-dimensional (3D) heterojunction solar cells (HSCs) were fabricated by thermal deposition of a compact CdTe layer onto ZnO nanorods (NRs). Although the 3D architecture obviously improves the short-circuit current of HSCs, the open-circuit voltage is rather low, and this problem can be addressed by inserting an intermediate layer between ZnO NRs and the CdTe layer. On the basis of experimental and theoretical analyses, we found that the low open-circuit voltage mainly arose from the incomplete depletion layer and serious recombination of carriers at the CdTe/ZnO interface. The CdS intermediate layer can redistribute the depletion regions and eliminate the interface defects, thus remarkably improving the open-circuit voltage.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA07547A
Abstract: Hybrid-structured solar cells with superior light absorption, charge separation and hole transportation exhibit enhanced photovoltaic performance.
Publisher: American Chemical Society (ACS)
Date: 11-04-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA45995K
Publisher: Wiley
Date: 04-2016
Abstract: Strongly coupled Nafion molecules and ordered porous CdS networks are fabricated for visible-light photoelectrochemical (PEC) hydrogen evolution. The Nafion layer coating shifts the band position of CdS upward and accelerates charge transfer in the photoelectrode/electrolyte interface. It is highly expected that the strong coupling effect between organic and inorganic materials will provide new routes to advance PEC water splitting.
Publisher: American Chemical Society (ACS)
Date: 16-10-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA10733H
Abstract: Grain boundaries on the Au(110) surface facilitate the production of liquid fuel CH 3 OH for CO 2 electroreduction by strongly binding the CO intermediate.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA12347B
No related grants have been discovered for Xiwen Du.