全光谱条件下WO<sub>3-<i>x</i></sub>光催化降解甲氧苄啶

陈书鑫; 周菁清; 孙琴琴; 王昆; 刘铮铮; 余磊; 刘劲松; 王静

doi:10.13205/j.hjgc.202302019

全光谱条件下WO_3-x光催化降解甲氧苄啶

doi: 10.13205/j.hjgc.202302019

陈书鑫^1,2,
周菁清^1,2,
孙琴琴^1,2,
王昆³,
刘铮铮^1,2,
余磊^1,2,
刘劲松^1,2,
王静^1,2, ,

1. 浙江省生态环境监测中心, 杭州 310012;
2. 浙江省生态环境监测预警及质控研究重点实验室, 杭州 310012;
3. 浙江大学环境科学系, 杭州 310058

基金项目:

浙江省生态环境科研和成果推广项目(2021XM0006,2021HT0004)

浙江省科技计划项目(2021C03176)

详细信息

作者简介:
陈书鑫(1995-),男,硕士,助理工程师,主要研究方向为有机污染物环境监测与评价。1412240161@qq.com

通讯作者:
王静(1978-),女,教授级高工,主要研究方向为有机污染物环境监测与评价。348417706@qq.com

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- 文章访问数: 158
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- 被引次数: 0
出版历程
- 收稿日期: 2022-03-31
- 网络出版日期: 2023-05-25
- 刊出日期: 2023-02-01

PHOTOCATALYTIC DEGRADATION OF TRIMETHOPRIM BASED ON WO_3-x UNDER FULL SPECTRUM

CHEN Shuxin^1,2,
ZHOU Jingqing^1,2,
SUN Qinqin^1,2,
WANG Kun³,
LIU Zhengzheng^1,2,
YU Lei^1,2,
LIU Jinsong^1,2,
WANG Jing^{1,2
, ,}

1. Zhejiang Ecological and Environmental Monitoring Center, Hangzhou 310012, China;
2. Zhejiang Key Laboratory of Ecological and Environmental Monitoring, Forewarning and Quality Control, Hangzhou 310012, China;
3. Department of Environmental Science, Zhejiang University, Hangzhou 310058, China

摘要

摘要: 光催化作为一项绿色、高效的污染物治理技术,其传统光催化材料缺少对全光谱中红外光区的利用,会在一定程度上造成资源的浪费,限制了污染物降解能力上限。因此,利用WO_3-x光催化降解甲氧苄啶(TMP),探索了不同光谱下的降解性能以及在最优降解条件下的降解机理。结果表明:黑暗和红外光条件下,TMP几乎未发生降解。全光谱条件下TMP的降解率相较于紫外-可见光提高44.8%。2种体系中WO_3-x光催化反应降解TMP的机理较为相似,O^-₂·和H₂O₂是发挥主要作用的活性物种。在降解过程中,大量的活性自由基在催化剂表面产生,然后进入均相体系,促进TMP降解;同时,WO_3-x对全光谱中红外光区间段的有效吸收展现出优异的降解能力。此外,温度在反应体系中并不是提升降解率的主导因素。
- 光催化 /
- 全光谱 /
- 甲氧苄啶 /
- 氢化氧化钨
Abstract: Photocatalysis is a green and efficient pollutant treatment technology. The lack of utilization of the mid-infrared light region by traditional photocatalytic materials causes a waste of resources and limits the upper limit of pollutants' degradation efficiency. This study used photocatalytic degradation of TMP based on WO_3-x to explore the degradation performance under different spectra and the degradation mechanism under the optimal degradation condition. The results showed that TMP was hardly degraded under dark and infrared light conditions. Compared with UV-visible light, the degradation of TMP under full spectrum conditions was increased by 44.8%. The mechanism of TMP degradation by WO_3-x photocatalytic reaction in the two systems was similar, and O^-₂· and H₂O₂ were the active species that played the main role. During the degradation process, a large number of active radicals were generated on the catalyst surface and then entered the homogeneous system to promote the degradation of TMP. At the same time, temperature was not the dominant factor in improving the degradation rate in the reaction system, because WO_3-x exhibited excellent degradation ability due to the effective absorption of the mid-infrared light region of the full spectrum.
- photocatalysis /
- full-spectrum /
- trimethoprim /
- WO_3-x

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