Photocatalytic performance of ZnO/g-C3N4 composite photocatalysts in microfluidic reactors

被引：0

作者：

Liu H.-Z. ^{[1
]}

Zhou H. ^{[1
]}

机构：

[1] State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2022年 / 56卷 / 03期

关键词：

Degradation of dye; Microfluidic reactor; Photocatalytic technology; ZnO/g-C[!sub]3[!/sub]N[!sub]4[!/sub] composite;

D O I：

10.3785/j.issn.1008-973X.2022.03.006

中图分类号：

学科分类号：

摘要：

The ZnO/g-C3N4 composite photocatalysts with different mass fractions of ZnO were synthesized by a simple impregnation method. The structure, morphology, chemical compositions and optical properties of the samples were analyzed. The as-prepared samples were fixed to microfluidic reactors, respectively. The photocatalytic performance of these reactors was evaluated by the degradation of different dyes (methylene blue, neutral red, malachite green, and rhodamine B) under visible light. The characterization indicated that there was an interaction between ZnO and g-C3N4 in the as-prepared composite. And the composite could make good use of visible light. Also, compared with g-C3N4, the recombination of photogenerated electron-hole pairs in the composite was obviously inhibited. The results of photocatalytic experiments displayed that 6% ZnO/g-C3N4 exhibited the best photocatalytic performance compared to other mass fractions of ZnO. When the light intensity was 60 klx and the liquid flow rate was 20 μL/min, the degradation efficiency of rhodamine B solution reached 98.9%. The photocatalytic degradation of methylene blue by multiple cycle tests was also studied, indicating the sample's stability and reliability when conducting photocatalytic degradation experiments in microfluidic reactors. Copyright ©2022 Journal of Zhejiang University (Engineering Science). All rights reserved.

引用

页码：476 / 484

页数：8

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