原位构建多孔纳米阱：优化催化剂性能的途径

IF 8.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2025-01-12 DOI:10.1021/acsami.4c19956

Tianli Liu, Jian Zhang, Ye Xiao, Yuting Xia, Mingjie Xu, Jingxi Zhang, Ruiping Liu, Chang-An Wang

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引用次数: 0

摘要

负载型贵金属催化剂具有较高的催化活性和选择性。然而，在高温反应过程中，贵金属颗粒的快速表面重构和烧结对催化剂的稳定性提出了重大挑战。本研究通过构建氧化物纳米阱制备了抗烧结负载型贵金属催化剂。以Pt/Al2O3为研究范式。将多巴胺作为结构导向剂和成孔剂，在Pt/Al2O3表面形成多孔的CeO2覆盖层，包封Pt纳米颗粒。由于CeO2的约束及其与Pt的相互作用，改性Pt/Al2O3@CeO2具有优异的催化活性和抗烧结稳定性。该方法可推广到其他负载型催化剂体系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

In Situ Construction of a Porous Nanotrap: A Pathway for Catalyst Performance Optimization

查看原文本刊更多论文

In Situ Construction of a Porous Nanotrap: A Pathway for Catalyst Performance Optimization

Supported noble metal catalysts have a high catalytic activity and selectivity. However, fast surface reconstruction and sintering of noble metal particles during a high-temperature reaction process pose a major challenge to the stability of the catalysts. In this study, sinter-resistant supported noble metal catalysts were prepared by constructing an oxide nanotrap. Pt/Al₂O₃ was used as a research paradigm. Dopamine was applied as a structure-directing agent and pore-forming agent to form a porous CeO₂ overlay on the surface of Pt/Al₂O₃ and encapsulate Pt nanoparticles. Due to the confinement of CeO₂ and its interaction with Pt, the modified Pt/Al₂O₃@CeO₂ exhibits superior catalytic activity and antisintering stability. This method can be extended to other supported catalyst systems.

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.