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本文通过水热预处理,利用热解工艺从蚕茧中成功地制备了一种高性能的掺杂碳基催化剂.研究了制备条件及氟原子掺杂对催化剂性能的影响.在最优化条件下制备出的氮氟共掺杂碳基催化剂具有超过1000 m~2·g~(-1)的比表面积,N元素和F元素含量可达3.5%及7.3%.在碱性条件下,所制备的催化剂具有可与商业铂碳催化剂相媲美的氧还原催化活性,同时展示出优异的抗甲醇中毒性能及稳定性.F原子的掺杂对催化剂性能的提高效果显著.
In this paper, a high-performance doped carbon-based catalyst was successfully prepared from silkworm cocoons by hydrothermal pretreatment, the preparation conditions and the effect of fluorine atom doping on the performance of the catalyst were studied.Preparation of the catalyst under optimal conditions The nitrogen-carbon co-doped carbon-based catalyst has a specific surface area exceeding 1000 m 2 · g -1, and the content of N element and F element can reach 3.5% and 7.3% respectively. Under alkaline conditions, The catalyst has an oxygen reduction catalytic activity comparable to that of commercial platinum-carbon catalysts, and exhibits excellent anti-methanol poisoning performance and stability. The effect of F atom doping on the catalyst performance is remarkable.