摘要
以葡萄糖为表面活性剂,采用水热法成功合成了由纳米片组装而成的花状分级结构BiOCl。采用X射线衍射(XRD)、傅里叶变换红外光谱(FTIR)、元素分析(EA)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、选区电子衍射(SAED)、紫外可见漫反射光谱(UV-visDRS)、N2物理吸附(BET)、电子顺磁共振(ESR)等对所合成样品进行了表征。考察了不同葡萄糖添加量对BiOCl的形貌和可见光催化性能的影响,并重点研究了葡萄糖添加量为0.3g制备的BiOCl的微观结构和降解Rh B的机理。结果表明,添加不同量的葡萄糖可调控BiOCl的形貌,拓宽BiOCl的吸光范围。葡萄糖加入量为0.3g时得到的由纳米片组装成的花状分级结构BiOCl在2h即可将RhB降解掉95%。机理研究表明,·O_2~–是光催化降解过程中的主要活性物种。因此,提出了一种可能的光催化剂降解RhB的机理。
The flower-like hierarchical BiOCl composed of nanosheets have been successfully synthesized by hydrothermal method using glucose as surfactant.The BiOCl were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),elemental analysis(EA),scanning electron microscopy(SEM),transmission electron microscopy(TEM),UV-vis diffuse reflectance spectroscopy(DRS),Brunauer-Emmer-Teller(BET),and electron spin resonance(ESR).The morphology and photocatalytic performance of the BiOCl prepared at different additive amount of glucoses were investigated.Moreover,the microstructure and mechanism of RhB degradation of 0.3g glucose were mainly discussed.The results showed that different addition of glucoses could control the morphology of BiOCl and widen the absorption range of BiOCl.It was found that the BiOCl obtained at the addition of 0.3g glucose could degrade 95%RhB in two hours.The main active species was·O2–.Finally,a possible mechanism of photocatalytic degradation of RhB was proposed.
作者
李宜睿
李东亚
孙靖宇
成功
龙学军
徐海明
夏东升
LI Yirui;LI Dongya;SUN Jingyu;CHENG Gong;LONG Xuejun;XU Haiming;XIA Dongsheng(School of Environmental Engineering,Wuhan Textile University,Wuhan 430200,Hubei,China;Shenzhen Institute of Environmental Science,Shenzhen 518001,Guangdong,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2018年第11期4419-4426,共8页
Chemical Industry and Engineering Progress
基金
湖北省自然科学基金(2015CFB706)
深圳市知识创新计划(20160516170018077)
石狮市科技计划重点项目(SS[2016]0137)
关键词
葡萄糖
形貌可控
碳化
光热催化
glucose
morphology-controlled
carbonization
photothermocatalysis
作者简介
李宜睿(1996—),女,本科。E-mail:949225012@qq.com;通讯作者:徐海明,讲师,研究方向为纳米材料。E-mail:xulianhe@163.com;通讯作者:夏东升,博士,教授。E-mail:dongsheng_xia@wtu.edu.cn。
