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 ...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.展开更多
基金supported by the National Natural Science Foundation of China(grant no.4227740621777188)the Fundamental Research Funds for the Central Universities in China(grant no.2022JCCXHH11).
文摘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.
