摘要
【目的】以BiCl_3和NaOH为原料,以石墨烯纳米片为模板,通过一步常温沉淀法制备得二维BiOCl/Bi_(12)O_(17)Cl_2@石墨烯纳米复合物。【方法】通过X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、高倍透射电镜(HRTEM)、紫外-可见漫反射光谱(UV-Vis DRS)、BET-BJH等手段对样品进行了表征分析。【结果】BiOCl/Bi_(12)O_(17)Cl_2@石墨烯纳米复合物的可见光催化活性明显高于纯BiOCl/Bi_(12)O_(17)Cl_2纳米片。【结论】BiOCl/Bi_(12)O_(17)Cl_2@石墨烯纳米复合物表现出明显增强的可见光催化活性可以归因于可见光利用能力增强、比表面积和孔容增大、光生电子-空穴对分离能力提高等因素的协同作用。研究结果为制备新型BiOCl/Bi_(12)O_(17)Cl_2基可见光催化剂提供了一种新思路。
[Purposes]Two-dimensionalBiOCl/Bi12O（17）Cl2@Graphene nanocomposites,using BiCl3 and NaOH as raw materials,and grapheme as template,were synthesized by depositing BiOCl/Bi12O（17）Cl2 nanosheets onto the surface of graphene at room temperature.[Methods]The as-obtained samples are characterized by XRD,SEM,TEM,HRTEM,UV-Vis DRS and BET-BJH.[Findings]The as-obtained BiOCl/Bi12O（17）Cl2@Graphene nanocomposites exhibit much higher visible light photocatalytic activity than that of pure BiOCl/Bi12O（17）Cl2 nanosheets.[Conclusions]The enhanced photocatalytic activity of BiOCl/Bi12O（17）Cl2@Graphene nanocomposites resulted from the synergistic effect of the improved visible light absorption,enlarged special surface areas and pore volumes,and efficient photo-generated electron-hole pairs separation.The present work could provide a new route for the synthesis of BiOCl/Bi12O（17）Cl2 based visible light photocatalysts.
作者
张文东
孙建敏
梁毅
ZHANG Wendong;SUN Jianmin;LIANG Yi(Department of Scientific Research Management,Chongqing Normal University,Chongqing 401331;College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China)
出处
《重庆师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第4期103-108,共6页
Journal of Chongqing Normal University:Natural Science
基金
国家自然科学基金青年基金(No.51708078)
重庆市博士后科研项目(No.Xm2016027)
重庆师范大学博士启动基金(No.16XLB011)
