نتایج جستجو برای: electrooxidation

تعداد نتایج: 858  

Journal: :Physical chemistry chemical physics : PCCP 2016
Tian Sheng Wen-Feng Lin Shi-Gang Sun

We have successfully built a general framework to comprehend the structure-selectivity relationship in ethanol electrooxidation on platinum by density functional theory calculations. Based on the reaction mechanisms on three basal planes and five stepped surfaces, it was found that only (110) and n(111) × (110) sites can enhance CO2 selectivity but other non-selective step sites are more benefi...

Journal: :Physical chemistry chemical physics : PCCP 2010
A-Ra Ko Jy-Yeon Kim Jae-Kyung Oh Hyun-Su Kim Young-Woo Lee Sang-Beom Han Kyung-Won Park

We report nanostructure electrodes for methanol electrooxidation by means of the co-sputtering deposition method. The Pt-WC-WO(3) three-phase electrode has higher I(f)/I(b) and oxidation current density i.e. improved electrocatalytic activity in comparison with those of pure Pt and two-phase electrodes because of both catalysis of tungsten carbide and size-control by tungsten oxide.

Journal: :Chemical communications 2010
Rui Liu Jing-Fu Liu Gui-Bin Jiang

By using Triton X-114 as structure-director and weak binding stabilizer, ultrathin Au, Pd and Pt nanowires are synthesized in seconds by reduction of inorganic metal precursors with KBH(4) in aqueous phase. The nanowires show high catalytic activity and long-term stability toward electrooxidation of alcohols.

Journal: :Chemical communications 2008
Jitendra N Tiwari Fu-Ming Pan Rajanish N Tiwari S K Nandi

A two-dimensional continuous Pt island network was successfully synthesized by pulse-potentiostatic electrodeposition on a flat silicon substrate, which showed markedly enhanced catalytic activity toward methanol electrooxidation and high CO tolerance, probably due to the synergistic effect of the Pt island catalyst and surrounding SiO(2) surface layer.

Journal: :Journal of the American Chemical Society 2012
Liang-Xin Ding An-Liang Wang Gao-Ren Li Zhao-Qing Liu Wen-Xia Zhao Cheng-Yong Su Ye-Xiang Tong

Porous Pt-Ni-P composite nanotube arrays (NTAs) on a conductive substrate in good solid contact are successfully synthesized via template-assisted electrodeposition and show high electrochemical activity and long-term stability for methanol electrooxidation. Hollow nanotubular structures, porous nanostructures, and synergistic electronic effects of various elements contribute to the high electr...

Journal: :Energy advances 2023

Carbon supported Ni and NiCo catalysts are prepared for amino compounds electrooxidation. Their electrocatalytic behaviors toward 8 kinds of acids (glycine, alanine, histidine, methionine, proline, serine, tyrosine, cysteine) are...

Journal: :Materials advances 2022

The incorporation of P into Pt–Co nanoalloys is used to regulate the electron density around Pt for high-efficiency methanol electrooxidation.

Journal: :Journal of The Serbian Chemical Society 2021

Solvothermaly synthesized zirconium oxide nanopowders, pure and doped with various amounts of iron ions (1?20 %), were used as modifiers glassy carbon electrodes. The modified electrodes tested in the reaction electrochemical oxidation 2,4,6-trichlorophenol (TCP) order to investigate influence doping on performance zirconia matrix. techniques cyclic voltammetry impedance spectroscopy employed. ...

Journal: :Environmental science 2021

The electrooxidation of PFOS can be significantly improved with the simultaneous electrosynthesis ferrate and permanganate from low concentration ambient Fe 2+ Mn in source waters, even presence natural organic matter (NOM).

Journal: :Journal of Physical Chemistry C 2021

A detailed understanding of the methanol electrooxidation reaction mechanism is important for further development fuel cells. By modeling on Au(111) using density funct...

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