Photothermal-photocatalytic thin-layer flow system for synergistic treatment of wastewater  

作　　者：Zhongjiao Zha Jun Wu Shaoping Tong Xuebo Cao 

机构地区：[1]College of Chemical Engineering,State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,Zhejiang University of Technology,Hangzhou 310014,China [2]College of Biological,Chemical Sciences and Engineering,Jiaxing University,Jiaxing 314001,China [3]College of Advanced Materials Engineering,Jiaxing Nanhu University,Jiaxing 314001,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第11期120-129,共10页中国化学工程学报（英文版）

基　　金：Scientific Research Fund of Zhejiang Provincial Education Department(Y202250501);SRT Research Project of Jiaxing Nanhu University。

摘　　要：The integration of the photocatalytic effect into solar steam is highly desirable for addressing freshwater shortages and water pollution.Here,a ternary film structure for the adsorption and photothermal and photocatalytic treatment of wastewater was designed by combining the technique of self-assembled carbon nano paper with a nitrogen composite titanium dioxide(N-TiO_(2))deposited on the surface of carbon nanotubes(CNT)using polyvinylidene fluoride(PVDF)as a substrate.The photogeneration of reactive oxygen species can be promoted by rapid oxygen diffusion at the three-phase interface,whereas the interfacial photothermal effect promotes subsequent free radical reactions for the degradation of rhodamine B(93%).The freshwater evaporation rate is 1.35 kg·m^(-2)·h^(-1)and the solar-to-water evaporation efficiency is 94%.Importantly,the N-TiO_(2)/CNT/PVDF(N-TCP)film not only effectively resists mechanical damage from the environment and maintains structural integrity,but can also be made into a large film for outdoor experiments in a large solar energy conversion device to collect fresh water from polluted water and degrade organic dyes in source water simultaneously,opening the way for applications in energy conversion and storage.

关 键 词：Wastewater disposal Solar-driven distill Thin-layer flow Clean water production Ternary film 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]