催化作用
纳米材料基催化剂
氧化还原
化学
红外光谱学
衰减全反射
吸附
三元运算
选择性
粒子(生态学)
粒径
化学工程
无机化学
有机化学
物理化学
工程类
地质学
海洋学
程序设计语言
计算机科学
作者
Zhengwei Zhao,Li Zhang,Xiao Ma,Yulin Min,Qing Xu,Qiaoxia Li
标识
DOI:10.1016/j.electacta.2023.141866
摘要
The secret to raising catalyst selectivity and activity is to design nanocatalysts by regulating pore size and particle properties. Hence, it was effectively established that manipulating pore size and particle properties allowed for the manufacture of ternary Pd3Pb1@Pt2 concave nanocubes (Pd3Pb1@Pt2 CNCs). The synthesized Pd3Pb1@Pt2 CNCs/C shows superior electrocatalytic activity of 7500 mA mgPt+Pd−1 towards ethanol oxidation reaction (EOR) which is 7.08 times greater than the JM Pt/C (1060 mA mgPt−1). The catalyst has excellent stability, and the mass activity is still better than JM Pt/C after 3600 s stability test. The CO stripping measurements shows that the adsorption of CO is particularly weak, which proves that the catalyst has excellent resistance to medium toxicity. In situ attenuated total reflection infrared spectroscopy (ATR-IR) and external reflection-absorption infrared spectroscopy (IRRAS) have been employed to examine the molecular aspects of the EOR process. ATR-IR can monitor the production and removal of CO species in real time during EOR on Pd3Pb1@Pt2 CNCs/C. The band of CO2 is noticeably stronger on Pd3Pb1@Pt2 CNCs/C than it is on bare other catalysts, suggesting that the ethanol oxidation process may be promoted.
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