Green batch prepared a novel C/P co-doping urchin-like TiO_(2)for enhanced photocatalytic degradation and mineralization of trimethoprim  

作　　者：Weiwei Yang Qingwei Bu Ruiqing Zhao Haitao Huang Weijia Xu Nan Jia Qianhui Shi Lei Yang Jianfeng Tang Gang Yu 

机构地区：[1]School of Chemical&Environmental Engineering,China University of Mining&Technology-Beijing,Beijing,100083,PR China [2]State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing,100085,PR China [3]Key Laboratory of Urban Environment and Health,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen,361021,PR China [4]Advanced Interdisciplinary Institute of Environment and Ecology,Beijing Normal University,Beijing,102299,PR China

出　　处：《Emerging Contaminants》2024年第3期181-192,共12页新兴污染物（英文）

基　　金：supported by the National Natural Science Foundation of China(grant no.42277406;21777188);the Fundamental Research Funds for the Central Universities in China(grant no.2022JCCXHH11).

摘　　要：In advancing the practical application of photocatalytic degradation for pollutant removal,batch preparation of environmentally friendly photocatalysts plays a crucial role.Herein,we prepared C/P co-doped urchin-like TiO_(2)(C/PeTiO_(2))through a straightforward room temperature impregnation and atmospheric annealing process.Phytic acid served as the dopant precursor for introducing C and P onto the TiO_(2)surface.This doping process was verified through energy dispersive X-ray spectroscopy(EDX),electron spin resonance(ESR),and X-ray photoelectron spectroscopy(XPS)analysis.The C/PeTiO_(2)photocatalyst exhibited exceptional efficiency in degrading the target compound trimethoprim(TMP),achieving a degradation of 98%TMP within 60 min and a mineralization of 40%TMP within 120 min,which were respectively 2.4 and 1.6 times higher than that of pristine TiO_(2).The intermediate products of TMP were detected,and a plausible degradation pathway was proposed.Photoelectric characterization results also confirmed that C/P co-doping could effectively enhance the carrier separation efficiency of C/PeTiO_(2).The catalysts prepared using the scaled-up impregnation system and reusing the phytic acid solution consistently demonstrated stable catalytic performance,which confirmed the viability of the method for green and batch preparation of C/P co-doped TiO_(2).Notably,the obtained catalyst consistently exhibited high degradation efficacy in various real water bodies,highlighting its substantial potential for practical application.The green and batch preparation method of C/PeTiO_(2)introduces a novel approach to the practical application of photocatalysis technology in treatment of water contaminants.

关 键 词：C/PeTiO_(2) CO-DOPING Phytic acid TRIMETHOPRIM Photocatalytic degradation 

分 类 号：O64[理学—物理化学]