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BiVO4晶面生长调控及其光催化氧化罗丹明B和还原Cr(Ⅵ)的性能

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陈紫盈, 孙洁, 罗雪文, 李秀莹, 沈敏贤, 黄柱坚. BiVO4晶面生长调控及其光催化氧化罗丹明B和还原Cr(Ⅵ)的性能[J]. 环境化学, 2020, (8): 2129-2136. doi: 10.7524/j.issn.0254-6108.2019061101
引用本文: 陈紫盈, 孙洁, 罗雪文, 李秀莹, 沈敏贤, 黄柱坚. BiVO4晶面生长调控及其光催化氧化罗丹明B和还原Cr(Ⅵ)的性能[J]. 环境化学, 2020, (8): 2129-2136. doi: 10.7524/j.issn.0254-6108.2019061101
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CHEN Ziying, SUN Jie, LUO Xuewen, LI Xiuying, SHEN Minxian, HUANG Zhujian. Growth regulation of BiVO4 crystal plane and photocatalytic oxidation of Rhodamine B and reduction of Cr(Ⅵ)[J]. Environmental Chemistry, 2020, (8): 2129-2136. doi: 10.7524/j.issn.0254-6108.2019061101
Citation: CHEN Ziying, SUN Jie, LUO Xuewen, LI Xiuying, SHEN Minxian, HUANG Zhujian. Growth regulation of BiVO4 crystal plane and photocatalytic oxidation of Rhodamine B and reduction of Cr(Ⅵ)[J]. Environmental Chemistry, 2020, (8): 2129-2136. doi: 10.7524/j.issn.0254-6108.2019061101
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BiVO4晶面生长调控及其光催化氧化罗丹明B和还原Cr(Ⅵ)的性能

  • 华南农业大学资源环境学院, 广州, 510642

    • 通讯作者: 黄柱坚, E-mail: zjhuang@scau.edu.cn
  • 基金项目:

    国家自然科学基金（51509093）和广东省自然科学基金（2019A1515011659）资助.

Growth regulation of BiVO4 crystal plane and photocatalytic oxidation of Rhodamine B and reduction of Cr(Ⅵ)

  • College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, China

    • Corresponding author: HUANG Zhujian, zjhuang@scau.edu.cn
  • Fund Project: Supported by the National Science Foundation of China (51509093) and the National Science Foundation of Guangdong Province(2019A1515011659).

  • 摘要: 本研究以十二烷基苯磺酸钠（SDBS）作为表面活性剂，采用水热法制备纯BiVO4纳米晶片，通过X射线衍射（XRD）和扫描电子显微镜（SEM）分析所制备的一系列BiVO4纳米晶片的物相结构和晶体形貌，并运用固体紫外-可见漫反射光谱分析禁带宽度.结果表明，表面活性剂SDBS的存在可以抑制BiVO4晶体某一维度的生长，使得其结构呈菱形薄叶片状，且可以通过调节BiVO4前驱液的pH控制其晶面长生.本研究选用罗丹明B染料和六价铬Cr（Ⅵ）作为目标污染物探究在不同的前驱液pH值下制备的BiVO4晶体对光催化氧化罗丹明B（Rh B）和还原Cr（Ⅵ）的性能，结果表明晶面长生特性对BiVO4的可见光催化氧化还原活性反应占主导作用，通过调控BiVO4晶体生长，可能有效增大光生载流子与污染物接触面积从而提高光催化反应活性.在BiVO4前驱液为pH 3时的制备条件下，BiVO4晶片的氧化活性与还原活性均为最佳.
    Abstract: The BiVO4 nanocrystals were prepared through hydrothermal method using sodium dodecyl benzene sulfonate (SDBS) as surfactant. The physicochemical properties of the obtained BiVO4 nanocrystals were analyzed by X-ray diffraction (XRD), scanning electron microscope (SEM), and solid ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS). The results indicated that the presence of SDBS could inhibit the growth of BiVO4 crystal in a certain dimension and the crystal plane growth could be controlled by adjusting the pH of BiVO4 precursor. In this study, rhodamine B (RhB) and hexavalent chromium Cr(Ⅵ) were selected as target pollutants to study the photocatalytic performance of BiVO4 crystals prepared at different pH values of precursor solution. The results showed that the growth regulation of BiVO4 crystal plane play a dominant role in the visible light catalytic redox activity of BiVO4.The interfacial reaction between photogenerated carriers and pollutants could be effectively increased, which was beneficial for the enhancement of the photocatalytic activity. Under the BiVO4 precursor condition of pH 3, the oxidation activity and reduction activity of BiVO4 nanocrystal were the highest.
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  • 收稿日期:  2019-06-11

BiVO4晶面生长调控及其光催化氧化罗丹明B和还原Cr(Ⅵ)的性能

    通讯作者: 黄柱坚, E-mail: zjhuang@scau.edu.cn
  • 华南农业大学资源环境学院, 广州, 510642
  • 收稿日期:  2019-06-11
基金项目:

国家自然科学基金（51509093）和广东省自然科学基金（2019A1515011659）资助.

摘要: 本研究以十二烷基苯磺酸钠（SDBS）作为表面活性剂，采用水热法制备纯BiVO4纳米晶片，通过X射线衍射（XRD）和扫描电子显微镜（SEM）分析所制备的一系列BiVO4纳米晶片的物相结构和晶体形貌，并运用固体紫外-可见漫反射光谱分析禁带宽度.结果表明，表面活性剂SDBS的存在可以抑制BiVO4晶体某一维度的生长，使得其结构呈菱形薄叶片状，且可以通过调节BiVO4前驱液的pH控制其晶面长生.本研究选用罗丹明B染料和六价铬Cr（Ⅵ）作为目标污染物探究在不同的前驱液pH值下制备的BiVO4晶体对光催化氧化罗丹明B（Rh B）和还原Cr（Ⅵ）的性能，结果表明晶面长生特性对BiVO4的可见光催化氧化还原活性反应占主导作用，通过调控BiVO4晶体生长，可能有效增大光生载流子与污染物接触面积从而提高光催化反应活性.在BiVO4前驱液为pH 3时的制备条件下，BiVO4晶片的氧化活性与还原活性均为最佳.

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