نتایج جستجو برای: electrocatalytic

تعداد نتایج: 5110  

2016
Chao-Kuang Cheng Che-Hsien Lin Hsuan-Chung Wu Chen-Chi M. Ma Tsung-Kuang Yeh Huei-Yu Chou Chuen-Horng Tsai Chien-Kuo Hsieh

In this study, we reported the synthesis of the two-dimensional (2D) nanocomposite of molybdenum disulfide and nitrogen-doped graphene oxide (MoS2/nGO) as a platinum-free counter electrode (CE) for dye-sensitized solar cells (DSSCs). X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HRTEM), and Raman spectroscopy were used to examine the characteristics o...

2015
Haifeng Dong Conghui Liu Haitao Ye Linping Hu Bunshi Fugetsu Wenhao Dai Yu Cao Xueqiang Qi Huiting Lu Xueji Zhang

An efficient three-dimensional (3D) hybrid material of nitrogen-doped graphene sheets (N-RGO) supporting molybdenum disulfide (MoS(2)) nanoparticles with high-performance electrocatalytic activity for hydrogen evolution reaction (HER) is fabricated by using a facile hydrothermal route. Comprehensive microscopic and spectroscopic characterizations confirm the resulting hybrid material possesses ...

Journal: :Materials 2016
Diab Hassan Sherif El-Safty Khalil Abdelrazek Khalil Montasser Dewidar Gamal Abu El-Magd

The design of cheap and efficient oxygen reduction reaction (ORR) electrocatalysts is of a significant importance in sustainable and renewable energy technologies. Therefore, ORR catalysts with superb electrocatalytic activity and durability are becoming a necessity but still remain challenging. Herein, we report C/NiCo₂O₄ nanocomposite fibers fabricated by a straightforward electrospinning tec...

Journal: :Biosensors & bioelectronics 2006
Minghui Yang Yunhui Yang Yanli Liu Guoli Shen Ruqin Yu

Platinum nanoparticle-doped sol-gel solution is prepared and used as a binder for multi-walled carbon nanotubes (CNT) for the fabrication of electrochemical sensors. Amine group containing sol-gel solution is selected to utilize the affinity of -NH(2) groups toward metal nanoparticles for stabilization the nanoparticles in solution. The resulting CNT-silicate material brings new capabilities fo...

Journal: :Chemical communications 2007
Ronen Polsky Jason C Harper David R Wheeler Shawn M Dirk Julia A Rawlings Susan M Brozik

We describe a new approach for reagentless electrochemical immunoassay sensing in which Au/Pd NPs can be "loaded" onto antibodies to create an electrocatalytic antibody that is sensitive to the oxygen reduction reaction.

Journal: :Chemical communications 2011
Zhengyu Bai Lin Yang Yuming Guo Zhi Zheng Chuangang Hu Pengle Xu

A facile preparation of polypyrrole-modified fullerene supported Pd nanoparticles catalyst is introduced; electrochemical measurements demonstrate that the obtained Pd/ppy-C(60) catalyst shows a good electrocatalytic activity and stability for the oxidation of formic acid.

Journal: :Chemical communications 2011
Yueming Tan Jingmin Fan Guangxu Chen Nanfeng Zheng Qingji Xie

Novel Au/Pt and Au/Pt(3)Ni nanostructures consisting of Pt and Pt(3)Ni alloy nanodendrites grown on Au nanowires were synthesized, which exhibited high electrocatalytic activity and durability toward oxygen reduction when used as self-supported catalysts.

Journal: :Chemical communications 2012
Youn Soo Kim Areum Cha Ju Yeon Shin Hyun Ji Jeon Jun Ho Shim Chongmok Lee Sang-gi Lee

Gold nanoparticles (AuNPs) were assembled with high density onto multi-walled carbon nanotubes, which were functionalized with zwitterionic poly(imidazoliumsulfonate). The AuNP/zwitterionic CNT hybrids exhibited decent electrocatalytic activity in oxygen reduction reaction as the AuNP-based catalysts.

Journal: :Chemical communications 2002
Hongzhou Yang Yanlong Gu Youquan Deng Feng Shi

Electrocatalytic cycloaddition of carbon dioxide to epoxides in room temperature ionic liquids as reaction media without any additional supporting electrolyte and catalyst could be conducted with high to excellent performances under mild conditions.

2013
Guoqiang He Yang Song Bruce Phebus Ke Liu Christopher P. Deming Peiguang Hu Shaowei Chen

Silver nanoparticles capped by a variety of organic ligands (i.e., 1-hexanethiol, 1-octyne, and 4-trifluoromethylphenyl fragments) were synthesized by a chemical reduction route, with the resulting nanoparticles denoted as AgSC6, AgHC8, and AgPhCF3, respectively. The nanoparticle structures were characterized by using a variety of techniques including NMR, UV-vis, infrared, thermogravimetric an...

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