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Pt/BiVO4光催化剂的制备及其光催化降解性能

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张中杰, 关卫省, 孙绍芳, 吴亚帆, 卢昶雨. Pt/BiVO4光催化剂的制备及其光催化降解性能[J]. 环境化学, 2014, 33(6): 1003-1009. doi: 10.7524/j.issn.0254-6108.2014.06.003
引用本文: 张中杰, 关卫省, 孙绍芳, 吴亚帆, 卢昶雨. Pt/BiVO4光催化剂的制备及其光催化降解性能[J]. 环境化学, 2014, 33(6): 1003-1009. doi: 10.7524/j.issn.0254-6108.2014.06.003
shu
ZHANG Zhongjie, GUAN Weisheng, SUN Shaofang, WU Yafan, LU Changyu. Preparation of Pt/BiVO4 and its photocatalytic activity for the degradation of tetracycline[J]. Environmental Chemistry, 2014, 33(6): 1003-1009. doi: 10.7524/j.issn.0254-6108.2014.06.003
Citation: ZHANG Zhongjie, GUAN Weisheng, SUN Shaofang, WU Yafan, LU Changyu. Preparation of Pt/BiVO4 and its photocatalytic activity for the degradation of tetracycline[J]. Environmental Chemistry, 2014, 33(6): 1003-1009. doi: 10.7524/j.issn.0254-6108.2014.06.003
shu

Pt/BiVO4光催化剂的制备及其光催化降解性能

  • 1.

    长安大学环境科学与工程学院, 西安, 710054

  • 基金项目:

    高等学校博士学科点专项科研基金（20110205110014）；中央高校基本科研业务费专项资金项目.

Preparation of Pt/BiVO4 and its photocatalytic activity for the degradation of tetracycline

  • 1.

    School of Environmental Science and Engineering, Chang'an University, Xi'an, 710054, China

  • Fund Project:

  • 摘要: 采用微波法和光还原沉积法制备了一系列不同Pt含量的Pt/BiVO4光催化剂.采用X射线衍射仪（XRD）、X射线能谱仪（EDS）、透射电子显微镜（TEM）、X射线光电子能谱（XPS）和紫外可见漫反射（UV-vis）对样品进行表征，并以氙灯为光源，四环素为目标污染物，对该光催化剂在可见光（λ>420 nm）下的光催化降解活性进行了评价.实验结果表明，当Pt含量为2wt%时，Pt/BiVO4光催化剂在可见光照射60min条件下对四环素的降解效率达到了87.5%，明显高于纯BiVO4 22.7%的降解效率.沉积适量的Pt，能显著抑制光生电子与空穴的复合，提高光催化活性.
    Abstract: A series of novel Pt/BiVO4 photocatalysts were synthetized by microwave method and photoreduction deposition process. The prepared photocatalysts were characterized by XRD, EDS, TEM, XPS and UV-vis absorption spectroscopy. The photocatalytic activity of the synthesized products was evaluated by the degradation of tetracycline(TC) under a Xenon lamp irradiation(cut off λ≤420 nm light through an optical filter).Compared with pure BiVO4, Pt/BiVO4 photocatalysts showed enhanced photocatalytic degradation activities for TC under visible-light irradiation. Particularly, when Rw(Pt/BiVO4) was 2%, the products exhibited the highest TC degradation ratio of 87.5% in 60 min. The degradation ratio of 2wt% Pt/BiVO4 was higher than the single-phase BiVO4 (22.7%).The enhanced photocatalytic activity was mainly attributed to the presence of Pt nanoparticles, which suppressed the recombination of photogenerated electrons and holes, and promoted the efficiency of electron-hole separation.
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  • 收稿日期:  2013-09-12
张中杰, 关卫省, 孙绍芳, 吴亚帆, 卢昶雨. Pt/BiVO4光催化剂的制备及其光催化降解性能[J]. 环境化学, 2014, 33(6): 1003-1009. doi: 10.7524/j.issn.0254-6108.2014.06.003
引用本文: 张中杰, 关卫省, 孙绍芳, 吴亚帆, 卢昶雨. Pt/BiVO4光催化剂的制备及其光催化降解性能[J]. 环境化学, 2014, 33(6): 1003-1009. doi: 10.7524/j.issn.0254-6108.2014.06.003
shu
ZHANG Zhongjie, GUAN Weisheng, SUN Shaofang, WU Yafan, LU Changyu. Preparation of Pt/BiVO4 and its photocatalytic activity for the degradation of tetracycline[J]. Environmental Chemistry, 2014, 33(6): 1003-1009. doi: 10.7524/j.issn.0254-6108.2014.06.003
Citation: ZHANG Zhongjie, GUAN Weisheng, SUN Shaofang, WU Yafan, LU Changyu. Preparation of Pt/BiVO4 and its photocatalytic activity for the degradation of tetracycline[J]. Environmental Chemistry, 2014, 33(6): 1003-1009. doi: 10.7524/j.issn.0254-6108.2014.06.003
shu

Pt/BiVO4光催化剂的制备及其光催化降解性能

  • 1. 长安大学环境科学与工程学院, 西安, 710054
  • 收稿日期:  2013-09-12
基金项目:

高等学校博士学科点专项科研基金（20110205110014）；中央高校基本科研业务费专项资金项目.

摘要: 采用微波法和光还原沉积法制备了一系列不同Pt含量的Pt/BiVO4光催化剂.采用X射线衍射仪（XRD）、X射线能谱仪（EDS）、透射电子显微镜（TEM）、X射线光电子能谱（XPS）和紫外可见漫反射（UV-vis）对样品进行表征，并以氙灯为光源，四环素为目标污染物，对该光催化剂在可见光（λ>420 nm）下的光催化降解活性进行了评价.实验结果表明，当Pt含量为2wt%时，Pt/BiVO4光催化剂在可见光照射60min条件下对四环素的降解效率达到了87.5%，明显高于纯BiVO4 22.7%的降解效率.沉积适量的Pt，能显著抑制光生电子与空穴的复合，提高光催化活性.

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