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5篇 您的检索式:作者名="Yu Danmei"
    题名 作者 年代 出处 被引量
1Mesoporous vanadium pentoxide nanofibers with significantly enhanced Li- ion storage properties by eleetrospinning显示文摘Yu Danmei Chen Changguo Xie Shuhong 2011Energy Environ Sci2011,4,3:1
2The preparation and performance of high activity Ni-Cr binary catalysts for direct borohydride fuel cells显示文摘Ni-Cr binary anode catalysts used in direct borohydride fuel cells (DBFCs) were prepared using a constant potential electrodepo- sition method. Compared with pure metal Ni catalysts, the electro-oxidation currents of borohydride ions (BH-4) more than doubled when using Ni-Cr binary catalysts under the same conditions. The enhanced activity of the Ni-Cr binary catalysts could be attributed to the change in distribution of BH-4ions on the surface of the Ni electrode. This is due to Cr electrodeposits, which allows a greater number of hydrogen atoms to catalyze from each tetrahedron BH-4 ion. The performance of Ni-Cr binary catalysts could also be improved by optimizing the electrodeposition conditions. The results show that Ni-Cr binary catalysts are optimally prepared using an electrodeposition method of 1s with a Cr3+ concentration of 0.2 mol L-1 and a potential of -0.100 V.YU DanMei SHEN Yan YE Zhen WEN JiaZhi WANG Jie CHEN ChangGuo 2013Chinese Science Bulletin2013,58,20:1
3显示文摘Yu Danmei Zhou Shangqi Chen Changguo 2004J Chongqing Univ Eng Ed2004,3,1:1
4Bismuth clusters pinned on TiO_(2) porous nanowires boosting charge transfer for CO_(2) photoreduction to CH_(4)显示文摘Artificial photosynthesis in carbon dioxide(CO_(2))conversion into value-added chemicals attracts considerable attention but suffers from the low activity induced by sluggish separation of photogenerated carriers and the kinetic bottleneck-induced unsatisfied selectivity.Herein,we prepare a new-style Bi/TiO_(2) catalyst formed by pinning bismuth clusters on TiO_(2) nanowires through being confined by pores,which exhibits high activity and selectivity towards photocatalytic production of CH_(4) from CO_(2).Boosted charge transfer from TiO_(2) through Bi to the reactants is revealed via in situ X-ray photon spectroscopy and time-resolved photoluminescence(PL).Further,in situ Fourier transform infrared results confirm that Bi/TiO_(2) not only overcomes the multi-electron kinetics challenge of CO_(2) to CH_(4) via boosting charge transfer,but also facilitates proton production and transfer as well as the intermediates*CHO and*CH_(3)O generation,ultimately achieving the tandem catalysis towards methanation.Theoretical calculation also underlies that the more favorable reaction step from*CO to*CHO on Bi/TiO_(2) results in CH_(4) production with higher selectivity.Our work brings new insights into rational design of photocatalysts with high performance and the formation mechanism of CO_(2) to CH_(4) for solar energy storage in future.Jiazhi Meng Kaiwen Wang Yang Wang Jiangping Ma Chaogang Ban Yajie Feng Bin Zhang Kai Zhou Liyong Gan Guang Han Danmei Yu Xiaoyuan Zhou 2024Nano Research2024,17,3:0
5Study on the electronic structure of nickel hydroxide by quantum chemical DV-Xα calculation显示文摘The electronic structures of atom clusters Ni7O12H122+ and Ni7O12H9-of β-Ni(OH)2 were calculated by quantum chemical DV-Xα method. By analyzing the state densities, orbital populations, net charges and electric charge density differences of the selected clusters, it was indicated that β-Ni(OH)2 was not typical ionic crystal, and the bonds between Ni and O atoms had obvious covalent characteristics. The bonds between H atom and other atoms in the crystal structure were weaker, which ensured that H atoms can easily deintercalate and intercalate into β-Ni(OH)2. The structure of β-Ni(OH)2 was not changed by moderate de-intercalation of H atoms. However, with the excessive de-intercalation of H atoms, the structure of β-Ni(OH)2 changed and the electrochemical active properties were reduced.YU DanMei CHEN ChangGuo SI YuJun ZHOU ShangQi WANG Li 2008Chinese Science Bulletin2008,53,1:0
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