可见光激发降解甲基橙的光催化漂浮球的制备

doi:10.13475/j.fzxb.20200306909

纺织学报 ›› 2020, Vol. 41 ›› Issue (12): 102-110.doi: 10.13475/j.fzxb.20200306909

可见光激发降解甲基橙的光催化漂浮球的制备

宋英琦, 潘家豪, 吴礼光, 王挺(), 董春颖

浙江工商大学环境科学与工程学院, 浙江杭州 310012

收稿日期:2020-03-25 修回日期:2020-08-03 出版日期:2020-12-15 发布日期:2020-12-23
通讯作者: 王挺
作者简介:宋英琦(1982—), 女, 实验师, 硕士。主要研究方向为环境工程污染治理。
基金资助:
国家自然科学基金资助项目(21776250);浙江省自然科学基金资助项目(LY19B060004);浙江省自然科学基金资助项目(LY20B060001);2020年度高校实验室工作研究项目(ZD202004)

Fabrication of photocatalytic floating spheres for degradation of methyl-orange under illumination of visible light

SONG Yingqi, PAN Jiahao, WU Liguang, WANG Ting(), DONG Chunying

School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, Zhejiang 310012, China

Received:2020-03-25 Revised:2020-08-03 Online:2020-12-15 Published:2020-12-23
Contact: WANG Ting

摘要/Abstract

摘要：

为推广多相光催化技术在特殊废水深度治理中的应用,采用耦合吸附相反应技术和热还原处理制备了高活性的可见光响应的贵金属沉积光催化组分。将该光催化组分负载于多孔聚氨酯海绵颗粒表面后,填充至聚丙烯空心球中构建漂浮式光催化球,并用于高含盐废水中甲基橙的光降解。结果表明:通过吸附相反应技术可在TiO₂光催化剂表面沉积小粒径且与TiO₂表面紧密结合的贵金属纳米粒子,从而在光催化组分中引入费米能级并形成表面等离子体共振效应,增强光催化组分在可见光激发下对高含盐废水中甲基橙的降解性能;由于贵金属沉积光催化组分的高效降解性能,其负载后构建的漂浮式光催化球也能稳定高效地降解高含盐废水中的甲基橙。

关键词: 吸附相反应技术, 贵金属沉积, 可见光光降解, 漂浮式光催化球, 高含盐废水, 废水处理

Abstract:

In order to extend the application of heterogeneous photocatalytic technology in deep level treatment for special wastewater, a visible light-driven photocatalytic component deposited by visible light with high performance was prepared via adsorbed-layer nanoreactor synthesis coupling with thermal reduction treatment. Followed that, the porous polyurethane sponge particle was firstly employed as a carrier to load the photocatalytic component, and the supported polyurethane sponge was filled into a polypropylene hollow sphere to fabricate a floating photocatalytic sphere for photodegrading methyl-orange in high saline waste water. The results show that noble metal nanoparticles with small size could be deposited on the surface of TiO₂ closely combined with TiO₂ by adsorbed-layer nanoreactor synthesis. Due to the introduction of the Fermi level and the plasmon resonance effect into the photocatalytic components, the degradation performance for methyl orange is enhanced in highly saline wastewater illuminated by visible light. Because of loading by noble metal deposition photocatalytic components with high performance, the resulting floating photocatalytic spheres could also stably and efficiently degrade methyl orange in highly saline wastewater.

Key words: adsorbed-layer nanoreactor synthesis, noble metal deposition, photocatalysis irradiated by visible light, floating photocatalytic sphere, high saline wastewater, wastewater treatment

中图分类号:

O647

宋英琦, 潘家豪, 吴礼光, 王挺, 董春颖. 可见光激发降解甲基橙的光催化漂浮球的制备[J]. 纺织学报, 2020, 41(12): 102-110.

SONG Yingqi, PAN Jiahao, WU Liguang, WANG Ting, DONG Chunying. Fabrication of photocatalytic floating spheres for degradation of methyl-orange under illumination of visible light[J]. Journal of Textile Research, 2020, 41(12): 102-110.

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催化剂名称	反应物			NaOH加入量
催化剂名称	名称	加入量		NaOH加入量
Ag-P25	硝酸银		36.52	8.70
Au-P25	氯金酸		21.27	21.27
Pt-P25	氯铂酸		32.41	32.41

可见光激发降解甲基橙的光催化漂浮球的制备

Fabrication of photocatalytic floating spheres for degradation of methyl-orange under illumination of visible light

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