Platinum decorated mesoporous titanium cobalt nitride nanorods catalyst with promising activity and CO-tolerance for methanol oxidation reaction |
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Authors: | Guangwen Feng Zhanchang Pan Yanbin Xu Haijiao Chen Guowei Xia Yafeng Zhang Shikun Shi Xihui Deng |
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Affiliation: | 1. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China;2. Victory Giant Technology (Huizhou) Co., Ltd., Huizhou 516083, China |
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Abstract: | In this study, mesoporous titanium cobalt nitride nanorods (Ti0.9Co0.1N NRs) hybrid as non-carbon platinum supports is successfully prepared by a solvothermal process and subsequent nitridation process. The highly porous materials can provide abundant binding sites for growing well-dispersed Pt. The X-ray photoelectron spectroscopy results indicate that the cobalt element doping promoted the interaction of platinum and support. Notable, the peak current density of Pt/Ti0.9Co0.1N NRs catalyst is 0.85 A mgpt?1, which 3.4-fold of Pt/C catalyst. What's more, the onset potential (0.34 V) of CO oxidation on Pt/Ti0.9Co0.1N NRs is lower than on the Pt/C (0.47 V) and Pt/TiN NRs (0.37 V). The results confirmed the mesoporous Pt/Ti0.9Co0.1N NRs catalyst unfolds a much enhanced catalytic activity and CO tolerance for methanol oxidation. The exceptional electrocatalytic properties are achieved for the Pt/Ti0.9Co0.1N NRs catalysts due to its unique porous structure and the electronic effect of robust Ti0.9Co0.1N NRs introduced by the cobalt element doping. |
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Keywords: | Titanium cobalt nitride nanorods Porous materials Methanol oxidation Fuel cells |
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