Nano-Au Catalysts Modified with TiO2: Enhancement of Electrocatalytic Activity for 1-Propanol Oxidation in Alkaline Media

被引:8
作者
Chiu, Wan-Ting [1 ]
Chiu, Yi-Hsuan [2 ]
Hsieh, Ping-Yen [2 ]
Chang, Tso-Fu Mark [3 ]
Sone, Masato [3 ]
Hsu, Yung-Jung [2 ]
Tixier-Mita, Agnes [1 ]
Toshiyoshi, Hiroshi [1 ]
机构
[1] Univ Tokyo, IIS, Tokyo 1538505, Japan
[2] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan
[3] Tokyo Inst Technol, IIR, Yokohama, Kanagawa 2268503, Japan
基金
日本学术振兴会;
关键词
PTRU NANOPARTICLES; ETHANOL OXIDATION; CARBON NANOTUBES; CO TOLERANCE; METHANOL; GOLD; POLYANILINE; COMPOSITE; ELECTROOXIDATION; CLUSTERS;
D O I
10.1149/2.0741912jes
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Electrocatalytic activity of the anode for alcohols oxidation is a critical issue in fuel cell which is considered as a clean energy. Performance deterioration of the catalyst takes place due to the adsorption of carbonaceous residues on the electrode surface, which is also known as poisoning of the electrode. Desorption of carbonaceous residues is thought to be an essential solution but not has been studied systematically. In this work, we investigate both the desorption of carbonaceous residues and the promotion of electrocatalytic activity to alcohols oxidation reactions by using Au nanoparticles (NPs)-TiO2/polyaniline (PANI) composite to boost the overall activity of electrocatalytic alcohol oxidation reactions. Desorption of carbonaceous residues and electrocatalytic activity of alcohol oxidation reactions are evaluated by cyclic voltammetry (CV) measurements in various alcohols. The chronoamperometric i-t curves are measured to evaluate the stability. Mechanisms for desorption of carbonaceous residues and enhancement of the electrocatalytic activity are elaborated and summarized. Electrodes with TiO2 decoration show better performance than TiO2-free specimens. In addition, Au NPs-decorated composites not only show an extra characteristic peak of alcohol oxidation reactions but also perform a constructive effect on the already existing oxidation reaction, indicating the promotion of electrocatalytic oxidation of alcohols. (C) 2019 The Electrochemical Society.
引用
收藏
页码:F760 / F767
页数:8
相关论文
共 44 条
[1]  
Anderson ML, 2002, NANO LETT, V2, P235, DOI [10.1021/nl015707d, 10.1021/n1015707d]
[2]  
[Anonymous], 2012, XRAY SPECTROSCOPY
[3]   Carbon supports for low-temperature fuel cell catalysts [J].
Antolini, Ermete .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 88 (1-2) :1-24
[4]   Electro-oxidation of methanol on gold in alkaline media: Adsorption characteristics of reaction intermediates studied using time resolved electro-chemical impedance and surface plasmon resonance techniques [J].
Assiongbon, KA ;
Roy, D .
SURFACE SCIENCE, 2005, 594 (1-3) :99-119
[5]   Electrocatalytic activity of ordered intermetallic phases for fuel cell applications [J].
Casado-Rivera, E ;
Volpe, DJ ;
Alden, L ;
Lind, C ;
Downie, C ;
Vázquez-Alvarez, T ;
Angelo, ACD ;
DiSalvo, FJ ;
Abruña, HD .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (12) :4043-4049
[6]  
Chen X. W., 2002, CHEM COMMUN, V21, P2588
[7]   Preparation of carbon-supported PtRu nanoparticles for direct methanol fuel cell applications - a comparative study [J].
Deivaraj, TC ;
Lee, JY .
JOURNAL OF POWER SOURCES, 2005, 142 (1-2) :43-49
[8]  
Dicks A., 2018, FUEL CELL SYSTEMS EX, VThird
[9]   Graphene-supported platinum and platinum-ruthenium nanoparticles with high electrocatalytic activity for methanol and ethanol oxidation [J].
Dong, Lifeng ;
Gari, Raghavendar Reddy Sanganna ;
Li, Zhou ;
Craig, Michael M. ;
Hou, Shifeng .
CARBON, 2010, 48 (03) :781-787
[10]   Novel Strategy for Preparation of Graphene-Pd, Pt Composite, and Its Enhanced Electrocatalytic Activity for Alcohol Oxidation [J].
Gao, Lina ;
Yue, Wenbo ;
Tao, Shanshan ;
Fan, Louzhen .
LANGMUIR, 2013, 29 (03) :957-964