高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (2): 200-205.doi: 10.7503/cjcu20170663

• 研究论文: 无机化学 • 上一篇    下一篇

α-Bi2O3纳米管/氮掺杂碳量子点复合材料的合成及光催化性能

华承贺1, 马红超2, 董晓丽1,2(), 张秀芳2   

  1. 1. 大连工业大学纺织与材料工程学院
    2. 轻工与化学工程学院, 大连116034
  • 收稿日期:2017-09-30 出版日期:2018-02-10 发布日期:2017-12-29
  • 作者简介:联系人简介: 董晓丽, 女, 博士, 教授, 博士生导师, 主要从事环境污染控制理论与技术研究. E-mail: dongxl@dlpu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21476033)资助

Synthesis and Photocatalytic Activity of α-Bi2O3 Nanotubes/Nitrogen Doped Carbon Quantum Dots Hybrid Material

HUA Chenghe1, MA Hongchao2, DONG Xiaoli1,2,*(), ZHANG Xiufang2   

  1. 1. School of Textile and Material Engineering
    2. School of Light Industry & Chemical Engineering,Dalian Polytechnic University, Dalian 116034, China
  • Received:2017-09-30 Online:2018-02-10 Published:2017-12-29
  • Contact: DONG Xiaoli E-mail:dongxl@dlpu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21476033)

摘要:

通过低温水热法一步合成了α-Bi2O3纳米管/氮掺杂碳量子点(α-BO/N-CQDs)纳米复合材料, 并通过X射线衍射(XRD)、 扫描电子显微镜(SEM)、 透射电子显微镜(TEM)、 紫外-可见漫反射(DRS)及电化学等表征手段测试了复合材料的特性. 结果表明, 柠檬酸铵通过低温水热过程可转化为尺寸分布较窄的氮掺杂碳量子点(5~8 nm), 而铋源的引入能够得到α-Bi2O3纳米管/氮掺杂碳量子点纳米复合材料. TEM与红外测试(FTIR)结果证实了α-Bi2O3纳米管与氮掺杂碳量子点具有较好的复合度. 此外, 尽管碳量子点的引入导致α-Bi2O3纳米管比表面积略微下降, 但能够增强α-Bi2O3纳米管的光吸收能力. 罗丹明B(RhB)光降解实验证明了α-BO/N-CQDs纳米复合材料具有良好的光催化特性, 光照180 min后RhB的降解率达到86%.

关键词: α-Bi2O3纳米管, 氮掺杂碳量子点, 低温水热合成, 光催化

Abstract:

The α-Bi2O3 nanotubes/nitrogen doped carbon quantum dots(α-BO/N-CQDs) hybrid materials were synthesized by one-step hydrothermal method and characterized by means of XRD, SEM, TEM and UV-visible diffuse-reflectance spectrum(UV-Vis DRS). The results show that ammonium citrate converted into nitrogen doped carbon quantum dots(5—8 nm) through low temperature hydrothermal process and the α-BO/N-CQDs nanocomposites were obtained after introducting bismuth source. Results of TEM and FTIR confirm that the α-Bi2O3 nanotubes and N-CQDs had a better combination. Although the introduction of carbon quantum dots led to a slight decrease of the specific surface area of α-Bi2O3 nanotubes, it enhanced the absorption capacity. The photocatalytic activities were evaluated for the degradation of RhB solution. The results demonstrate that α-BO/N-CQDs possessed great photocatalytic activities, after irradiating for 180 min, the degradation rate of RhB reached 86%.

Key words: α-Bi2O3 Nanotube, Nitrogen doped carbon quantum dots, Low temperature hydrothermal synthesis, Photocatalysis

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