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通过Pd进行界面水激活,在CuPd双金属催化剂上促进SO₂电还原到H₂S

Zhujiang Wang¹, Jun Wu¹, Jieyu Li¹

¹School of Metallurgy and Environment, Central South University, Changsha 410083 China.

Journal of colloid and interface science

|February 9, 2025

概括

我们开发了铜- (CuPd) 双金属催化剂,以有效的电催化方式将二氧化硫 (SO2) 减少为硫化 (H2S). 通过增强化和协同催化,Cu67Pd33显著提高了H2S的产生.

科学领域:

电化学电化学电化学
催化剂是一种催化剂.
材料科学材料科学材料科学

背景情况:

通过电催化方法将二氧化硫 (SO2) 减少为硫化 (H2S) 是硫资源利用的关键.
铜 (Cu) 催化剂具有选择性,但其化能力有限.
(Pd) 在化方面表现出色,提供了潜在的解决方案.

研究的目的:

合成和评估CuPd双金属催化剂,用于增强SO2电还原.
通过解决化限制,改善硫化 (H2S) 的生产.
阐明Cu和Pd之间的协同催化机制.

主要方法:

合成CuPd双金属催化剂.
电化学性能测试用于减少SO2.
在现场的里埃变换红外光谱 (FTIR) 用于中间分析.
密度函数理论 (DFT) 计算用于机制阐明.

主要成果:

Cu67Pd33表现出卓越的性能,达到201.56mA·cm-2.2的H2S部分电流密度.
这代表了对Cu的120%的增加和对Pd催化剂的154%.
DFT和FTIR揭示了Cu在*S形成中的作用,Pd在供应中的作用以及*S转化为H2S的作用.

结论:

双金属CuPd催化剂提供了一种新的策略,用于增强SO2电还原中的化.
和Pd之间的协同效应对于有效的SO2到H2S转化至关重要.
界面相互作用在双金属系统的催化性能中起着至关重要的作用.

关键词:

在CuPd双金属催化剂中.H(2) S 代的人生.在化过程中,化 SO(2) 电解过程中的电解.

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