文献类型：期刊文献

中文题名：Solar-light-driven photocatalytic degradation and detoxification of ciprofloxacin using sodium niobate nanocubes decorated g-C_(3)N_(4)with built-in electric field

作者：Hui Wang[1] Haodong Ji[2,3] Dandan Zhang[3,4] Xudong Yang[3] Hanchun Chen[2] Chunqian Jiang[5] Weiliang Sun[3] Jun Duan[3] Wen Liu[3,6,7]

第一作者：王辉

机构：[1]Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;[2]Eco-environment and Resource Efficiency Research Laboratory,School of Environment and Energy,Peking University Shenzhen Graduate School,Shenzhen 518055,China;[3]The Key Laboratory of Water and Sediment Sciences,Ministry of Education,College of Environmental Sciences and Engineering,Peking University,Beijing 100871,China;[4]Department of Energy,Environmental,and Chemical Engineering,Washington University,St.Louis,MO 63130,United States;[5]Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;[6]School of Environmental Engineering,Wuhan Textile University,Engineering Research Centre for Clean Production of Textile Dyeing and Printing,Ministry of Education,Wuhan 430073,China;[7]Beijing National Laboratory for Molecular Sciences,Peking University,Beijing 100871,China

年份：2025

卷号：36

期号：5

起止页码：610-616

中文期刊名：Chinese Chemical Letters

外文期刊名：中国化学快报(英文版)

基金：the National Key Research and Development Program of China(Nos.2021YFA1202500 and 2022YFF1303004);Shenzhen Science and Technology Program(No.JCYJ20220531093205013);the National Natural Science Foundation of China(NSFC)(Nos.52100069,52270053 and 52200084);the Beijing Natural Science Foundation(No.8232035),the Beijing Nova Program(No.20220484215);the Beijing National Laboratory for Molecular Sciences(No.BNLMS2023011);Emerging Engineering Interdisciplinary-Young Scholars Project(Peking University),the Fundamental Research Funds for the Central Universities are greatly acknowledged;supported by the High-Performance Computing Platform of Peking University;the National Key Scientific and Technological Infrastructure project“Earth System Numerical Simulation Facility”(EarthLab)are also acknowledged;supported by the program of“Research on Advanced Treatment Technology of New Pollutants in Domestic Sewage of Residential District”.

语种：英文

中文关键词：Detoxification;Photocatalysis;Solar light;Ciprofloxacin;Reactive sites

分类号：TB3

摘要：Simultaneous degradation and detoxification during pharmaceutical and personal care product removal are important for water treatment.In this study,sodium niobate nanocubes decorated with graphitic carbon nitride(NbNC/g-C_(3)N_(4))were fabricated to achieve the efficient photocatalytic degradation and detoxification of ciprofloxacin(CIP)under simulated solar light.NaNbO_(3)nanocubes were in-situ transformed from Na_(2)Nb_(2)O_(6)·H_(2)O via thermal dehydration at the interface of g-C_(3)N_(4).The optimized NbNC/g-C_(3)N_(4)-1 was a type-I heterojunction,which showed a high conduction band(CB)level of?1.68 eV,leading to the efficient transfer of photogenerated electrons to O_(2) to produce primary reactive species,?O_(2)^(-).Density functional theory(DFT)calculations of the density of states indicated that C 2p and Nb 3d contributed to the CB,and 0.37 e^(-)transferred from NaNbO_(3)to g-C_(3)N_(4)in NbNC/g-C_(3)N_(4)based on the Mulliken population analysis of the built-in electric field intensity.NbNC/g-C_(3)N_(4)-1 had 3.3-and 2.3-fold of CIP degradation rate constants(k_(1)=0.173 min^(?1))compared with those of pristine g-C_(3)N_(4)and NaNbO_(3),respectively.In addition,N24,N19,and C5 in CIP with a high Fukui index were reactive sites for electrophilic attack by?O_(2)^(-),resulting in the defluorination and ring-opening of the piperazine moiety of the dominant degradation pathways.Intermediate/product identification,integrated with computational toxicity evaluation,further indicated a substantial detoxification effect during CIP degradation in the photocatalysis system.