g-C3N4/CeO2/BiOBr三相復(fù)合材料的制備及其可見光催化降解RhB性能

編號：NMJS08586

篇名：g-C3N4/CeO2/BiOBr三相復(fù)合材料的制備及其可見光催化降解RhB性能

作者：蔡文宇 劉成寶 陳豐 錢君超 許小靜 孟憲榮 陳志剛

關(guān)鍵詞： g-C3N4 CeO2 BiOBr 光催化活性

機構(gòu)： 蘇州科技大學(xué)材料科學(xué)與工程學(xué)院江蘇省環(huán)境功能材料重點實驗室 蘇州科技大學(xué)江蘇水處理技術(shù)與材料協(xié)同創(chuàng)新中心 江蘇省陶瓷研究所有限公司 蘇州市環(huán)境科學(xué)研究所

摘要： Porous layered g-C3N4 was selected as base material via direct calcination method to synthesize g-C3N4/CeO2/BiOBr ternary composite photocatalytic materials with heterogeneous structure,while CeO2/BiOBr composites were introduced by ultrasonic stirring method.The composition,structure and optical properties of g-C3N4/CeO2/BiOBr were characterized by X-ray diffraction,scanning electron microscopy,transmission electron microscopy,X-ray photoelectron spectroscopy,UV-Vis DRS and photoluminescence analysis,and so on.The results show that the g-C3N4/CeO2/BiOBr has sandwich layered stacking structure,good interface contact structure and excellent light response performance due to the uniform phase distribution and high degree of crystallization.When the molar fraction of Ce∶Bi is 1∶1 and the mass fraction of g-C3N4 is 15%,the obtained three-phase composite shows the highest photocatalytic degradation property for RhB.The degradation rate for RhB is 99%,which is 86 times that of pure CeO2 and 3 times that of pure BiOBr.In addition,the composite has good stability with the RhB degradation efficiency of 89%after four cycles.