Preparation modification and water resistance optimization of Cu-Mn CO catalyst

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2025-06-08 DOI:10.1016/j.apsusc.2025.163768

Yashengnan Sun, Yanyan Zhu, Tianyu Xin, Xu Li, Xihua Zhou, Gang Bai, Wenjing Chang, Rongtao Zhu

引用次数: 0

Abstract

This study aimed to optimize Cu-Mn catalysts for carbon monoxide (CO) elimination. The catalysts were synthesized via co-precipitation to examine the effects of metal doping (Fe, Ce, and Sn), precipitation temperature variation, and hydrophobic modification using polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP). The structural and performance relationships were systematically analyzed using XRD, N₂ adsorption–desorption, contact angle measurements, and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) combined with catalytic activity tests. The results indicated that Ce doping and a precipitation temperature of 70 °C improved the ablation efficiency by 50 % compared with the other catalysts. Following PVA/PVP modification, the optimized catalyst maintained approximately 85 % ablation efficiency under 90 % relative humidity (RH), offering theoretical and practical insights for the development of high-efficiency CO catalysts.

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Cu-Mn - CO催化剂的制备、改性及耐水性优化

本研究旨在优化Cu-Mn催化剂去除一氧化碳（CO）。采用共沉淀法合成催化剂，考察了金属掺杂（Fe、Ce和Sn）、沉淀温度变化、聚乙烯醇（PVA）和聚乙烯吡罗烷酮（PVP）疏水改性对催化剂的影响。采用XRD、N2吸附-解吸、接触角测量、原位漫反射红外傅立叶变换光谱（DRIFTS）结合催化活性测试，系统分析了结构与性能之间的关系。结果表明，与其他催化剂相比，铈掺杂和70 ℃的沉淀温度使烧蚀效率提高了50% %。经过PVA/PVP改性后，优化后的催化剂在90 %相对湿度（RH）下保持了约85 %的烧蚀效率，为开发高效CO催化剂提供了理论和实践见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.