ag修饰ZnSn(OH)6微立方体增强光催化去除一氧化氮

IF 4.6 3区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL Sustainable Environment Research Pub Date : 2021-09-02 DOI:10.21203/rs.3.rs-829556/v1
Minh-Thuan Pham, N. Van, T. T. Nguyen, H. Tran, Hieu Trung Nguyen, Jheng-Jie Jiang, S. You, Ya-Fen Wang
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引用次数: 3

摘要

目前,大多数人都面临着一系列严重的空气污染问题,包括一氧化氮(NO)的大量排放,这需要一种切实可行的方法来维持我们的生活条件。本文合成了Ag纳米粒子(Ag-NPs)修饰的ZnSn(OH)6微管(Ag:cZHS)光催化剂,并将其用于太阳能活化下的光催化NO去除。通过一系列典型的方法对新获得的光催化剂的性能进行了综合表征。由于表面等离子体共振效应,与Ag NPs结合后,c:ZHS光催化剂的NO去除性能显著提高。通过俘获实验和电子自旋共振分析研究了电子(e−)、空穴(h+)、羟基自由基(•OH)和氧自由基(·O2)的贡献。此外,还对光催化剂的副产物和表观量子效率进行了深入的研究。
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Enhanced photocatalytic removal of nitric oxide over Ag-decorated ZnSn(OH)6 microcubes
Presently, most of the population has been facing a string of severe air pollution problems that include the intensive emission of nitric oxide (NO), which requires a practical approach to sustain our living conditions. Herein, Ag nanoparticles (Ag NPs)-decorated ZnSn(OH) 6 microcubes (Ag:cZHS) photocatalysts are synthesized and used for photocatalytic NO removal under solar light activation. The properties of the newly obtained photocatalysts are comprehensively characterized by a series of typical methods. The NO removal performance over the c:ZHS photocatalysts was increased markedly upon being combined with Ag NPs because of the surface plasmon resonance effect. The contribution of electron (e − ), hole (h + ), hydroxyl radical (•OH), and oxygen radicals (•O 2 ) was investigated through trapping tests and electron spin resonance analysis. Also, the by-products and apparent quantum efficiency of the photocatalysts were thoroughly studied.
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来源期刊
CiteScore
8.00
自引率
2.00%
发文量
47
审稿时长
30 weeks
期刊介绍: The primary goal of Sustainable Environment Research (SER) is to publish high quality research articles associated with sustainable environmental science and technology and to contribute to improving environmental practice. The scope of SER includes issues of environmental science, technology, management and related fields, especially in response to sustainable water, energy and other natural resources. Potential topics include, but are not limited to: 1. Water and Wastewater • Biological processes • Physical and chemical processes • Watershed management • Advanced and innovative treatment 2. Soil and Groundwater Pollution • Contaminant fate and transport processes • Contaminant site investigation technology • Soil and groundwater remediation technology • Risk assessment in contaminant sites 3. Air Pollution and Climate Change • Ambient air quality management • Greenhouse gases control • Gaseous and particulate pollution control • Indoor air quality management and control 4. Waste Management • Waste reduction and minimization • Recourse recovery and conservation • Solid waste treatment technology and disposal 5. Energy and Resources • Sustainable energy • Local, regional and global sustainability • Environmental management system • Life-cycle assessment • Environmental policy instruments
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