在Palladium化物中加入石,用于电催化乙醇氧化,增强CO耐受性
Xianlong Yang1,2, Xinghao Li1,2, Shu Bu1
1Department of Chemistry and Center for Atomic Engineering of Advanced Materials, School of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Anhui University, Hefei 230601, China.
ACS applied materials & interfaces
|August 23, 2023
概括
用石合的化 (Bi/PdH) 网络显著增强了乙醇氧化反应的电催化. 这种新型催化剂表现出更好的质量活性和CO耐受性,提供了耐用和高性能解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 基于 (Pd) 的催化剂对电催化非常重要,但提高它们的质量活性 (MA) 和一氧化碳 (CO) 耐受性仍然是一个挑战.
- 将非金属和氧性金属引入Pd催化剂可以提高电催化性能.
研究的目的:
- 为了制造稳定的甲合化 (Bi/PdH) 网络.
- 调查生物兴奋剂对乙醇氧化反应 (EOR) Pd催化剂的活性和耐久性的影响.
主要方法:
- 使用简单的一步合成方法创建Bi/PdH网络.
- 对乙醇氧化反应 (EOR) 的电催化性能进行了评估.
- 使用CO剥离分析和密度函数理论 (DFT) 计算来理解催化机制.
主要成果:
- 合成的Bi/PdH网络的MA值为8.51A·mgPd-1,是商业Pd/C的11倍以上.
- 生物兴奋剂显著抑制了催化剂表面的CO吸附,改善了CO耐受性.
- DFT计算证实了增强的OH*吸附和减轻的Pd-CO*相互作用.
结论:
- 双/PdH网络为EOR开发高性能和耐用电催化剂提供了一个有希望的途径.
- 兴奋剂策略有效地增强了基于的催化剂的催化活性和毒素耐药性.
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