摘要
本文采用不同p H值下一步法合成Bi_2O_2(BO_2OH)/BiOIO_3复合材料,通过XRD、SEM、TEM、UV-vis等测试手段分析复合材料的结晶情况和形貌特征。通过紫外条件下降解模拟污染物罗丹明染料来测试复合材料的光催化活性。结果表明:Bi_2O_2(BO_2OH)/BiOIO_3复合材料能够成功合成,在制备条件为p H=7的情况下具有最高的光催化降解速率。复合材料优异的光催化性能是由于复合材料的不同组分有相互重叠的能带结构,从而抑制了载流子的复合。
This paper discusses the influence of alkaline condition for Bi2O2 (BiO2OH)/BiOIO3 heterostructure. The composites were prepared by one-step method under different pH environment. The crystallization and morphology ofthe composites were analyzed by XRD, SEM and UV-vis. Photocayalytic activity was measured by decomposition of Rhodamine B (RhB) under UV-light irradiation. The results show that Bi2O2 (BiO2OH)/BiOIO3 composites can be successfully synthesized and have the highest photocatalytic degradation rate under the condition of pH = 7. This significant enhancement of degradation dye and prohibitive electron-hole pairs’ recombination should be ascribed to overlapping conduction band and valence band structure.
作者
杨洁
姚冲冲
雷鸣
YANG Jie;YAO Chong-chong;LEI Ming(School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China)
出处
《软件》
2017年第1期16-19,共4页
Software
基金
教育部新世纪优秀人才计划(NCET-13-0684)
国家自然科学基金(Grant nos.61574020,51572032,61376018,51472221,51472033,51472196,61377097)
