In situ preparation of g-C3N4/Bi4O5I2 complex and its elevated photoactivity in Methyl Orange degradation under visible light

作     者：Zhe Feng Lin Zeng Qingle Zhang Shifeng Ge Xinyue Zhao Hongjun Lin Yiming He Zhe Feng;Lin Zeng;Qingle Zhang;Shifeng Ge;Xinyue Zhao;Hongjun Lin;Yiming He

作者机构：Department of Materials Science and EngineeringZhejiang Normal UniversityJinhua 321004China College of Chemistry and Life SciencesZhejiang Normal UniversityJinhua 321004China Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsInstitute of Physical ChemistryZhejiang Normal UniversityJinhua 321004China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2020年第32卷第1期

页      面：149-162页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：financially supported by National Undergraduate Training Program for Innovation and Entrepreneurship(Nos.201810345012 and 201810345051) 

主　　题：g-C3N4 Bi4O5I2 Methyl Orange degradation Heterojunction Visible light 

摘      要：A graphite carbon nitride(g-C3N4)modified Bi4O5I2 composite was successfully prepared insitu via the thermal treatment of a g-C3N4/Bi OI precursor at 400°C for 3 *** as-prepared g-C3N4/Bi4O5I2 showed high photocatalytic performance in Methyl Orange(MO)degradation under visible *** best sample presented a degradation rate of 0.164 min^-1,which is 3.2 and 82 times as high as that of Bi4O5I2 and g-C3N4,*** g-C3N4/Bi4O5I2 was characterized by X-ray powder diffractometer(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),Raman,X-ray photoelectron spectroscopy(XPS),ultraviolet-visible diffuse reflectance spectra(DRS),electrochemical impedance spectroscopy(EIS)and transient photocurrent response in order to explain the enhanced *** indicated that the decoration with a small amount of g-C3N4 influenced the specific surface area only ***,the capability for absorbing visible light was improved measurably,which was beneficial to the MO *** top of that,a strong interaction between g-C3N4 and Bi4O5I2 was *** interplay promoted the formation of a favorable heterojunction structure and thereby enhanced the charge ***,the g-C3N4/Bi4O5I2 composite presented greater charge separation efficiency and much better photocatalytic performance than ***,g-C3N4/Bi4O5I2 also presented high stability.·O2^- and holes were verified to be the main reactive species.