高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (12): 2372-2379.doi: 10.7503/cjcu20150413

• 研究论文: 无机化学 • 上一篇    下一篇

Bi12SiO20多级立方块的水热合成、表征及光催化性能

张想1, 张雷1(), 邹玥1, 黄新华1, 潘成岭1(), 侯长民2, 徐吉庆2   

  1. 1. 安徽理工大学材料科学与工程学院, 多尺度材料与分子催化实验室, 淮南 232001
    2. 吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春 130012
  • 收稿日期:2015-05-20 出版日期:2015-12-10 发布日期:2015-11-19
  • 作者简介:联系人简介: 张 雷, 男, 博士, 讲师, 主要从事微纳米材料的液相制备及性能调控研究. E-mail:yutian1224@126.com;潘成岭, 男, 博士, 教授, 主要从事复合材料性能研究. E-mail:chengling_pan@126.com
  • 基金资助:
    国家自然科学基金(批准号: 21201006)、 安徽省自然科学基金(批准号: 1308085QB34)、 高等学校博士学科点专项科研基金(批准号: 20123415120002)和无机合成与制备化学国家重点实验室开放课题基金(批准号: 2015-28)资助

Hydrothermal Synthesis, Characterization and Photocatalytic Activities of Nanosheets-assembled Bi12SiO20 Microcubes

ZHANG Xiang1, ZHANG Lei1,*(), ZOU Yue1, HUANG Xinhua1, PAN Chengling1,*(), HOU Changmin2, XU Jiqing2   

  1. 1. Laboratory of Multiscale Materials and Molecular Catalysis, School of Materials Science and Engineering,Anhui University of Science and Technology, Huainan 232001, China
    2. State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, College of Chemistry,Jilin University, Changchun 130012, China
  • Received:2015-05-20 Online:2015-12-10 Published:2015-11-19
  • Contact: ZHANG Lei,PAN Chengling E-mail:yutian1224@126.com;chengling_pan@126.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21201006), the Natural Science Foundation of Anhui Province, China(No.1308085QB34), the Special Research Fund for the Doctoral Program of Higher Education, China(No.269 20123415120002) and the Open Fund of the State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, China(2015-28)

摘要:

以硝酸铋、 硅酸钠、 聚丙烯酰胺(PAM)和柠檬酸三钠(Na3Cit)为原料, 氢氧化钠为矿化剂, 采用温和的水热合成法制备了软铋矿相硅酸铋Bi12SiO20(BSO)立方块. 利用X射线粉末衍射仪、 扫描电子显微镜、 能量色散谱仪、 傅里叶变换红外光谱仪、 高分辨透射电子显微镜、 选区电子衍射仪和X射线光电子能谱仪等对BSO的物相和微观形貌进行了表征. 结果表明, BSO立方块由许多单晶纳米片层-层组装而成, 整个立方块的边长约为1~2 μm. 研究发现, 一些实验参数如反应时间, 反应温度和添加剂(PAM和Na3Cit)的引入对BSO多级结构的形成具有非常重要的影响. 光催化实验结果表明, 在紫外-可见光的辐照下, BSO多级立方块对罗丹明B(RhB)具有优良的光催化活性, 照射75 min后降解率可达到97.5%.

关键词: 多级立方块, 半导体, 水热合成, 晶体生长, 光催化活性

Abstract:

Novel nanosheet-assembled Bi12SiO20 microcubes were prepared via a facile hydrothermal synthesis approach. The phase and morphology of the product were characterized by X-ray diffraction, energy dispersive spectrometry, selected area electron diffraction, X-ray photoelectron spectrometry, high resolution transmission electron microscopy and scanning electron microscopy. Experimental results indicated that as-prepared Bi12SiO20 sample was assembled by many nanosheets. Some influencing factors including reaction time, temperature and the presence of additives(e.g., polyacrylamide, sodium citrate and sodium hydroxide) were revealed to play crucial roles in the generation of Bi12SiO20 nanoarchitecture. Moreover, the photocatalytic experiments indicated that the as-prepared Bi12SiO20 product exhibited excellent photocatalytic activities and the degradation rate of RhB could reach to 97.5% under the irradiation of UV-Vis light.

Key words: Hierarchical microcube, Semiconductor, Hydrothermal synthesis, Crystal growth, Photocatalytic activity

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