应用循环伏安法研究了几种催化剂Pt/MO2/CNTs（M = Sn, Ti, Ce）和Pt/CNTs对乙醇在H2SO4溶液中的电催化氧化过程。结果表明，金属氧化物的加入有利于乙醇的电氧化，其中，Pt/CeO2/CNTs对乙醇电氧化中间态产物具有显著的氧化性能。综合初始氧化电位、峰电流、总氧化峰面积等参数可以得出Pt/SnO2/CNTs催化剂性能最佳。
程玉龙
,
孙杰
,
李吉刚
,
张立功
,
周添
,
常耕
,
董中朝
. Pt/MO2/CNTs催化剂上乙醇电氧化研究[J]. 电化学, 2012
, 18(2)
: 131
-134
.
DOI: 10.61558/2993-074X.2892
The ethanol electrooxidation behaviors on Pt/MO2/CNTs（M=Sn, Ti, Ce）and Pt/CNTs catalysts in H2SO4 solutions were researched by cyclic voltammetry. It has revealed that the catalysts with the addition of metal oxides presented higher electrooxidation activity for ethanol, in particular, the Pt/CeO2/CNTs catalyst showed the best activity for ethanol electrooxidation intermediate. The Pt/SnO2/CNTs catalyst demonstrated the best ethanol electrooxidation activity when considering the synthetic effects of such parameters as the onset oxidation potential, peak current densities and total oxidation area.
[1] Zhou W J, Zhou B, Li W Z, et al. Performance comparison of low-temperature direct alcohol fuel cells with different anode catalysts [J]. Journal of Power Sources, 2004,126 (1/2): 16-22.
[2] Cao L, Scheiba F, Roth C, et al. Novel nanocomposite Pt/RuO2?xH2O/Carbon nanotube catalysts for direct methanol fuel cells [J]. Angewandte Chemie-International Edition, 2006, 45(32): 5315-5319.
[3] Antolini E. Catalysts for direct ethanol fuel cells [J]. Journal of Power Sources, 2007, 170(1): 1-12.
[4] Guo D J, Qiu X P, Chen L Q, et al. Multi-walled carbon nanotubes modi?ed by sulfated TiO2-A promising support for Pt catalyst in a direct ethanol fuel cell [J]. Carbon, 2009, 47(7) 1680-1685.
[5] Yuan H P, Guo D J, Qiu X P, et al. In?uence of metal oxides on Pt catalysts for methanol electrooxidation using electrochemical impedance spectroscopy [J]. Journal of Power Sources, 2009, 188(1): 8-13.
[6] Guo X, Guo D J, Qiu X P, et al. Excellent dispersion and electrocatalytic properties of Pt nanoparticles supported on novel porous anatase TiO2 nanorods [J]. Journal of Power Sources, 2009, 194(1): 281-285.
[7] Song H Q, Qiu X P, Li F H. Effect of heat treatment on the performance of TiO2-Pt/CNT catalysts for methanol electro-oxidation [J]. Electrochimica Acta, 2008, 53(10): 3708-3713.
[8] Chu Y Y (初园园), Wu B (邬冰), Tang Y W (唐亚文), et al. Electrocatalytic performance of Pt/C and Pt/WO3/C catalysts for methanol oxidation [J]. Journal of Electrochemistry (电化学), 2008, 14 (2): 155-158.
[9] Wang J S, Deng X Z, Xi J Y, et al. Promoting the current for methanol electro-oxidation by mixing Pt-based catalysts with CeO2 nanoparticles [J]. Journal of Power Sources, 2007, 170(2): 297-302.
[10] Bai Y X, Wu J J, Qiu X P, et al. Electrochemical characterization of Pt-CeO2/C and Pt-CexZr1-xO2/C catalysts for ethanol electro-oxidation [J]. Applied Catalysis B: Environmental, 2007, 73(1/2): 144-149.
[11] Xi J Y, Wang J S, Yu L H, et al. Facile approach to enhance the Pt utilization and CO-tolerance of Pt/C catalysts by physically mixing with transition-metal oxide nanoparticles [J]. Chemical Communications, 2007, 43(16): 1656-1658.
[12] Du W (杜巍), Xu D X (徐德霞), Huang C D (黄成德). Preparation of Pt-SnO2 /C complex catalysts and its electrooxidation performance to ethanol [J]. Chemical Industry and Engineering (化学工业与工程)，2008, 25 (1): 23-27.
[13] Hu F P (胡风平), Shen P K (沈培康). Ethanol oxidation over carbonized TiO2 nanotube- supported Pd electrocatalyst, Chinese Journal of Catalysis (催化学报), 2007, 28(1): 80-84.
[14] Song S Q (宋树芹), Wang Y (王毅), Shen P K (沈培康). Thermodynamic and kinetic considerations for ethanol electrooxidation in direct ethanol fuel cells [J]. Chinese Journal of Catalysis (催化学报), 2007, 28(9): 752-754.
