Taiyuan Institute of Technology
North University of China

以碳纳米管(CNTs)和XC-72R炭黑混合材料为载体，采用浸渍还原法制备了具有较高的电化学活性的催化材料PtCo/CNTs-C。采用X射线衍射(XRD)、透射电子显微镜(TEM)和X射线光电子能谱(XPS)对催化剂进行了结构表征。并将该材料用作了甲醇阳极氧化催化剂，考察了不同Co掺杂量以及温度对反应的影响。结果表明，PtCo/CNTs-C纳米催化剂中铂钴双金属形成合金，合金粒子在载体表面分布相对均匀。炭黑和金属Co的引入赋予了催化剂更高的催化活性。当Pt∶Co的质量比为94∶6时，催化剂对甲醇的催化氧化具有更低的起始电位(−0.651V(vs SCE))和更高的电流密度(86.74 mA/cm2)，且计时电流测试表明催化剂拥有良好的稳定性。

Using carbon nanotubes (CNTs) and XC-72R carbon black as the carrier, PtCo/CNTs-C catalyst with high electrochemical activity was prepared by impregnation reduction method. The structure of the catalyst was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The material was used as a catalyst for methanol anodic oxidation, and the effects of different Co doping and temperature on the reaction were investigated. The results showed that PtCo bimetallic alloy was formed in PtCo/CNTs-C nano-catalyst, and the alloy particles were relatively evenly distributed on the surface of the carrier. The introduction of carbon black and metal Co endowed the catalyst with higher catalytic activity. When the mass ratio of Pt∶Co was 94∶6, the catalyst had lower initial potential (−0.651 V (vs SCE)) and higher current density (86.74 mA/cm2) for the catalytic oxidation of methanol, and the chronoamperometric test showed that the catalyst had good stability.

山西省高等学校科技创新计划(2022L555) 和山西省自然科学基金（202203021212333）资助

白雪丽, 仇豪雷, 赵子龙, 刘煜成, 王峰, 张胜健, 张小平. PtCo/CNTs-C纳米催化剂的制备及甲醇电催化氧化性能研究[J]. 燃料化学学报（中英文）, 2023, 51(9): 1298-1305.

BAI Xue-li, QIU Hao-lei, ZHAO Zi-long, LIU Yu-cheng, WANG Feng, ZHANG Sheng-jian, ZHANG Xiao-ping. Preparation of PtCo/CNTs-C nanocatalysts and electrocatalytic oxidation performance of methanol[J]. Journal of Fuel Chemistry and Technology, 2023, 51(9): 1298-1305.