Advanced oxidation via the synergy of C-defective/C-O band modified ultrathin porous g-C_(3)N_(4)and PMS for efficient photothermal degradation of bisphenol pollutants and lignin derivatives  

作　　者：Liquan Jing Meng Xie Yuanguo Xu Chun Tong Xia Du Heng Zhao Na Zhong Huaming Li Jinguang Hu 

机构地区：[1]School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang,212013,China [2]Department of Chemical and Petroleum Engineering,University of Calgary,2500 University Drive,NW,Calgary,Alberta,T2N1N4,Canada [3]School of Pharmacy,Jiangsu University,Zhenjiang,212013,China [4]School of Material Science&Chemical Engineering,Harbin University of Science and Technology,Harbin,150080,China [5]Institute for Energy Research,Jiangsu University,Zhenjiang,212013,China

出　　处：《Green Energy & Environment》2024年第7期1159-1170,共12页绿色能源与环境（英文版）

基　　金：the National Natural Science Foundation of China(No.22076068,8111310014)(China);the University of Calgary’s Canada First Research Excellence Fund(CFREF)program(Canada)for financial support。

摘　　要：This work uses thermal polymerization of urea nitrate,oxyacetic acid and urea as the raw material to prepare ultra-thin porous carbon nitride with carbon defects and C-O band(OA-UN-CN).Density functional theory(DFT)calculations showed OA-UN-CN had narrower band gap,faster electron transport and a new internal construction electric field.Additionally,the prepared OA-UN-CN significantly enhanced photocatalytic activation of peroxymonosulfate(PMS)due to enhanced light absorption performance and faster electron overflow.As the result,the OA-UN-CN/PMS could entirely degrade bisphenol A(BPA)within 30 min,where the photodegradation rate was 81.8 and 7.9 times higher than that of g-C_(3)N_(4)and OA-UN-CN,respectively.Beyond,the OA-UN-CN/PMS could likewise degrade other bisphenol pollutants and sodium lignosulfonate efficiently.We suggested possible photocatalytic degradation pathways accordingly and explored the toxicity of its degradation products.This work provides a new idea on the development of advanced photocatalytic oxidation processes for the treatment of bisphenol pollutants and lignin derivatives,via a metal-free photothermal-catalyst.

关 键 词：Photothermal-catalytic G-C_(3)N_(4) PEROXYMONOSULFATE BISPHENOL Sodium lignosulfonate 

分 类 号：X703[环境科学与工程—环境工程]