نتایج جستجو برای: alcohols electrooxidation

تعداد نتایج: 12381  

2014
Magdalena Murawska James A. Cox Krzysztof Miecznikowski

In this article, we characterized tungsten oxide-decorated carbon-supported PtIr nanoparticles and tested it for the electrooxidation reactions of ethylene glycol and ethanol. Phase and morphological evaluation of the proposed electrocatalytic materials are investigated employing various characterization techniques including X-ray diffraction (XRD) and transmission electron microscopy (TEM). El...

Journal: :Dalton transactions 2015
Christopher M Sims Audaldo A Ponce Karen J Gaskell Bryan W Eichhorn

Pt and PtSn intermetallic nanoparticle (NP) catalysts were grown directly on various reduced graphene oxide (rGO) supports and were characterized by a combination of X-ray photoelectron spectroscopic (XPS), Raman microscopy, transmission electron microscopy (TEM), and powder X-ray diffraction (XRD) studies. Electrochemical CO stripping and rotating disk electrochemical (RDE) experiments showed ...

2008
Xinxian Zhong Jinhua Chen Lei Yang Xinping Sun

Nafion (Nf)-thionine (Th) ion-pair as dispersant and second catalyst has been introduced in Pt catalyst for methanol electrooxidation and the resulting catalyst supported on carbon (NfThPt/C) has been investigated by electrochemical method. For the same loading mass of Pt, the peak current density of methanol oxidation on the NfThPt/C/graphite electrode is about 7.25 and 3.04 times as high as t...

M. G. Hosseini M. M. Momeni

We explore electro-catalytic properties of a system consisting of platinum and palladium nanoparticles dispersed over a nanotubular self-organized TiO2 matrix. These electrodes prepared by electroess and microemulsion of palladium and palladium nanoparticles on to TiO2 nanotubes, respectively. Titanium oxide nanotubes were fabricated by anodizing titanium foil in ethylene glycol (EG) fluoride-c...

Journal: :iranian journal of pharmaceutical research 0
shima h. m. ebrahim ketabforoosh department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran 14176, iran. mohsen amini department of medicinal chemistry, faculty of pharmacy and drug design and development research center, tehran university of medical sciences, tehran 14176, iran. mohsen vosooghi department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran 14176, iran. abbas shafiee department of medicinal chemistry, faculty of pharmacy and pharmaceutical sciences research center, tehran university of medical sciences, tehran 14176, iran. ebrahim azizi molecular research laboratory, department of pharmacology and toxicology, faculty of pharmacy, medical sciences, university of tehran, tehran, iran. farzad kobarfard department of medicinal chemistry, shahid beheshti school of pharmacy, tehran, iran.

caffeic acid phenethyl ester(cape) suppresses the growth of transformed cells such as human breast cancer cells, hepatocarcinoma , myeloid leukemia, colorectal cancer cells, fibrosarcoma, glioma and melanoma. a group of heterocyclic esters of caffeic acid was synthesized using mitsunobu reaction and the esters were subjected to further structural modification by electrooxidation of the catechol...

Journal: :Physical chemistry chemical physics : PCCP 2011
Xiao-Ming Wang Ming-E Wang Dan-Dan Zhou Yong-Yao Xia

The pathway of formic acid electrooxidation strongly depends on the amount of three neighbouring Pt or Pd atoms in the surface of Pd- or Pt-based catalysts. Here, Pt decorated Pd/C nanoparticles (the optimal atomic ratio, Pd : Pt = 20 : 1) were designed and then synthesized through a facile galvanic replacement reaction where the amount of three neighbouring Pt or Pd atoms markedly decreased. A...

Journal: :Physical chemistry chemical physics : PCCP 2015
Takeshi Matsumoto Masaaki Sadakiyo Mei Lee Ooi Tomokazu Yamamoto Syo Matsumura Kenichi Kato Tatsuya Takeguchi Nobuki Ozawa Momoji Kubo Miho Yamauchi

We demonstrate electric power generation via the electrooxidation of ethylene glycol (EG) on a series of Fe-group nanoalloy (NA) catalysts in alkaline media. A series of Fe-group binary NA catalysts supported on carbon (FeCo/C, FeNi/C, and CoNi/C) and monometallic analogues (Fe/C, Co/C, and Ni/C) were synthesized. Catalytic activities and product distributions on the prepared Fe-group NA cataly...

Journal: :Materials Chemistry and Physics 2022

Poisoning tolerance of Pt-based catalyst is an important parameter for the designing direct electrochemical fuel cells (EFCs) based on electrooxidation alcohols (i.e. methanol, ethanol). Applicability ethanol EFCs still challenging taking into account lack effective electrocatalysts which are able to produce high faradic current densities and stability towards strong adsorption C1 C2 oxidation ...

Journal: :Chemical communications 2008
Qiao-Ling Zhao Zhi-Ling Zhang Bi-Hai Huang Jun Peng Min Zhang Dai-Wen Pang

A simple and facile method was developed to prepare fluorescent carbon nanocrystals (CNCs) with low cytotoxicity and no photobleaching, by electrooxidation of graphite in aqueous solution.

Journal: :Chemical communications 2010
Bohua Wu Dan Hu Yaming Yu Yinjie Kuang Xiaohua Zhang Jinhua Chen

Due to the protection of ionic liquid polymer thin film, the long-term operation stability of carbon nanotube-supported platinum nanoparticles for methanol electrooxidation has been improved.

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