In this study,α-Bi2O_(3)/g-C_(3)N_(4) nanocomposite with direct Z-scheme was successfully prepared through calcination of BiOCOOH/g-C_(3)N_(4) precursor at different temperature.Meanwhile,the effect of calcination te...In this study,α-Bi2O_(3)/g-C_(3)N_(4) nanocomposite with direct Z-scheme was successfully prepared through calcination of BiOCOOH/g-C_(3)N_(4) precursor at different temperature.Meanwhile,the effect of calcination temperature on the physicochemical properties ofα-Bi2O_(3)/g-C_(3)N_(4) was studied.All results confirmed that calcination tempe rature greatly influences structural,morphology,surface states,photoelectrochemical property and photocatalytic(PC)perfo rmance ofα-Bi2O_(3)/g-C_(3)N_(4) composite.Furthermore,theα-Bi2O_(3)/gC_(3)N_(4) composite was applied as photocatalyst to degrade amido black 10 B dye under visible light irradiation.It was found that the composite synthesized at 400℃exhibited the highest PC performance due to the intense visible light absorbance and high separation efficiency of electron and hole pairs.Besides,the possible PC mechanism was proposed that the photo-generated charge carrier migration inα-Bi2O_(3)/g-C_(3)N_(4) photocatalyst followed a Z-scheme structure.Finally,the stability test also manifest that theα-Bi2O_(3)/g-C_(3)N_(4) composite photocatalyst has good stability and reusability,which was a promising candidate for wastewater treatment.展开更多
基金the National Natural Science Foundation of China(Nos.5150825451978319)+2 种基金Fundamental Research Funds for the Central Universities(No.lzujbky-2017-it98)College Students’Innovative Practice Training Program of Chinese Academy of Sciences(No.Y710171040)Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences。
文摘In this study,α-Bi2O_(3)/g-C_(3)N_(4) nanocomposite with direct Z-scheme was successfully prepared through calcination of BiOCOOH/g-C_(3)N_(4) precursor at different temperature.Meanwhile,the effect of calcination temperature on the physicochemical properties ofα-Bi2O_(3)/g-C_(3)N_(4) was studied.All results confirmed that calcination tempe rature greatly influences structural,morphology,surface states,photoelectrochemical property and photocatalytic(PC)perfo rmance ofα-Bi2O_(3)/g-C_(3)N_(4) composite.Furthermore,theα-Bi2O_(3)/gC_(3)N_(4) composite was applied as photocatalyst to degrade amido black 10 B dye under visible light irradiation.It was found that the composite synthesized at 400℃exhibited the highest PC performance due to the intense visible light absorbance and high separation efficiency of electron and hole pairs.Besides,the possible PC mechanism was proposed that the photo-generated charge carrier migration inα-Bi2O_(3)/g-C_(3)N_(4) photocatalyst followed a Z-scheme structure.Finally,the stability test also manifest that theα-Bi2O_(3)/g-C_(3)N_(4) composite photocatalyst has good stability and reusability,which was a promising candidate for wastewater treatment.
