IF 5.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Jialin Li, Jing Wang, Tianle Cai, Jingling Yang
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引用次数: 0

摘要

臭氧是地面上的一种主要空气污染物,对人类健康和环境有不利影响。催化去除臭氧已被证明是最有效的方法。然而,其实际应用面临着巨大的挑战,尤其是其长期有效性和耐湿性。本文采用浸渍法成功制备了一系列掺杂过渡金属的沸石催化剂,用于催化臭氧分解。所制备的 Co-4A-0.07 催化剂在 1.4 L⋅min-1 的流量条件下,55 h 内的臭氧分解效率达到 90%,且具有高湿度稳定性,优于掺锰和掺铜的沸石以及 Co3O4。Co-4A-0.07 的出色催化性能可归因于其丰富的酸碱位点,这些位点增强了对臭氧的捕获,促进了反应体系内的电子转移,从而加速了臭氧的催化分解。这项工作为合理设计催化剂中的酸碱位点以实现高效臭氧分解提供了新的视角。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Transition metal doped zeolite as acid/base catalyst for efficient ozone decomposition

Transition metal doped zeolite as acid/base catalyst for efficient ozone decomposition
Ozone is a major air pollutant at ground level that have detrimental effects on human health and the environment. Catalytic removal of ozone has proven to be the most efficient method. However, its practical application faces substantial challenges, particularly its long-term effectiveness and humidity resistance. Herein, a series of transition metal-doped zeolite catalysts were successfully prepared by the impregnation method for catalytic ozone decomposition. The obtained Co-4A-0.07 catalyst achieving 90% ozone decomposition efficiency over 55 h under a flow rate of 1.4 L⋅min-1 and high-humidity stability, outperforming the Mn, Cu-doped zeolite and Co3O4. The outstanding catalytic performance of Co-4A-0.07 can be attributed to its abundant acid-base sites, which enhanced the capture of ozone, and facilitated the electron transfer within the reaction system, thereby accelerating the catalytic decomposition of ozone. This work offers new perspectives on the rational design of acid-base sites in catalysts to enable efficient ozone decomposition.
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来源期刊
Surfaces and Interfaces
Surfaces and Interfaces Chemistry-General Chemistry
CiteScore
8.50
自引率
6.50%
发文量
753
审稿时长
35 days
期刊介绍: The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)
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