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BiPO4稀土掺杂改性及其可见光光催化性能

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赵萍, 熊世威, 张欣欣, 贾漫珂, 黄应平. BiPO4稀土掺杂改性及其可见光光催化性能[J]. 环境工程学报, 2016, 10(5): 2335-2343. doi: 10.12030/j.cjee.201412164
引用本文: 赵萍, 熊世威, 张欣欣, 贾漫珂, 黄应平. BiPO4稀土掺杂改性及其可见光光催化性能[J]. 环境工程学报, 2016, 10(5): 2335-2343. doi: 10.12030/j.cjee.201412164
shu
Zhao Ping, Xiong Shiwei, Zhang Xinxin, Jia Manke, Huang Yingping. BiPO4 doped with rare-earth and its photocatalytic property under visible light irradiation[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2335-2343. doi: 10.12030/j.cjee.201412164
Citation: Zhao Ping, Xiong Shiwei, Zhang Xinxin, Jia Manke, Huang Yingping. BiPO4 doped with rare-earth and its photocatalytic property under visible light irradiation[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2335-2343. doi: 10.12030/j.cjee.201412164
shu

BiPO4稀土掺杂改性及其可见光光催化性能

  • 1.

    三峡大学生物与制药学院, 宜昌 443002

  • 2.

    三峡库区生态环境教育部工程研究中心(三峡大学), 宜昌 443002

  • 3.

    三峡地区地质灾害与生态环境湖北省协同创新中心(三峡大学), 宜昌 443002

  • 基金项目:

    国家自然科学基金资助项目(21377067,21407092,21207079)

    三峡库区生态环境教育部工程研究中心开放基金(KF2013-13)

    湖北省创新群体滚动项目(2015CFA021)

  • 中图分类号: X703

BiPO4 doped with rare-earth and its photocatalytic property under visible light irradiation

  • 1.

    College of Biology and Pharmacy, China Three Gorges University, Yichang 443002, China

  • 2.

    Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region, Ministry of Education, China Three Gorges University, Yichang 443002, China

  • 3.

    Collaborative Innovation Center of Geo-Hazards and Eco-Environment in the Three Gorges Area, Yichang 443002, China

  • Fund Project:

  • 摘要: 以Bi(NO3)3·5H2O、NH4H2PO4和稀土氧化物为原料,在乙二醇介质中采用溶剂热法制备了不同稀土元素(Ln=Sm、Pr、Tb)掺杂的BiPO4光催化剂(记为BiPO4-Ln,包含BiPO4-Sm、BiPO4-Pr和BiPO4-Tb)。通过X-射线衍射法(XRD)、扫描电子显微镜(SEM)、X-射线光电子能谱(XPS)和紫外可见漫反射光谱(UV-Vis DRS)对制备的催化剂进行了表征。以染料罗丹明B(rhodamine B, RhB)及小分子水杨酸(salicylic acid, SA)为目标化合物,研究了在可见光激发下(λ≥420 nm) BiPO4-Ln对目标污染物的光催化降解特性,结果表明,BiPO4-Ln相较纯BiPO4,其光吸收范围从紫外光扩大到可见光区域,在3种BiPO4-Ln催化剂中,BiPO4-Sm对RhB的吸附能力最强且其光催化活性较强,通过测定其在可见光下降解RhB过程中产生的活性物种,发现BiPO4-Ln在氧化降解RhB的过程中主要涉及到·OH及O-2·的氧化机理。
    Abstract: Rare-earth-doped BiPO4 catalysts were prepared by a solvothermal method in ethylene glycol using bismuth nitrate pentahydrate, ammonium dihydrogen phosphate, and oxides of rare earth elements as the raw materials. The as-prepared catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The photocatalytic activities of the samples were evaluated by the degradation of rhodamine B (RhB) and salicylic acid (SA) under visible-light irradiation. It was found that the presence of rare earth elements in the host BiPO4 could broaden the absorption region from UV to visible light. Among the rare-earth-doped samples, the BiPO4-Sm catalyst showed the highest adsorption property and photocatalytic activity. The active species were investigated during the degradation of RhB by BiPO4-Sm, and the results showed that superoxide and hydroxyl radicals were the main oxide species.
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  • 收稿日期:  2015-03-31
  • 刊出日期:  2016-06-03
赵萍, 熊世威, 张欣欣, 贾漫珂, 黄应平. BiPO4稀土掺杂改性及其可见光光催化性能[J]. 环境工程学报, 2016, 10(5): 2335-2343. doi: 10.12030/j.cjee.201412164
引用本文: 赵萍, 熊世威, 张欣欣, 贾漫珂, 黄应平. BiPO4稀土掺杂改性及其可见光光催化性能[J]. 环境工程学报, 2016, 10(5): 2335-2343. doi: 10.12030/j.cjee.201412164
shu
Zhao Ping, Xiong Shiwei, Zhang Xinxin, Jia Manke, Huang Yingping. BiPO4 doped with rare-earth and its photocatalytic property under visible light irradiation[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2335-2343. doi: 10.12030/j.cjee.201412164
Citation: Zhao Ping, Xiong Shiwei, Zhang Xinxin, Jia Manke, Huang Yingping. BiPO4 doped with rare-earth and its photocatalytic property under visible light irradiation[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2335-2343. doi: 10.12030/j.cjee.201412164
shu

BiPO4稀土掺杂改性及其可见光光催化性能

  • 1.  三峡大学生物与制药学院, 宜昌 443002
  • 2.  三峡库区生态环境教育部工程研究中心(三峡大学), 宜昌 443002
  • 3.  三峡地区地质灾害与生态环境湖北省协同创新中心(三峡大学), 宜昌 443002
  • 收稿日期:  2015-03-31
基金项目:

国家自然科学基金资助项目(21377067,21407092,21207079)

三峡库区生态环境教育部工程研究中心开放基金(KF2013-13)

湖北省创新群体滚动项目(2015CFA021)

摘要: 以Bi(NO3)3·5H2O、NH4H2PO4和稀土氧化物为原料,在乙二醇介质中采用溶剂热法制备了不同稀土元素(Ln=Sm、Pr、Tb)掺杂的BiPO4光催化剂(记为BiPO4-Ln,包含BiPO4-Sm、BiPO4-Pr和BiPO4-Tb)。通过X-射线衍射法(XRD)、扫描电子显微镜(SEM)、X-射线光电子能谱(XPS)和紫外可见漫反射光谱(UV-Vis DRS)对制备的催化剂进行了表征。以染料罗丹明B(rhodamine B, RhB)及小分子水杨酸(salicylic acid, SA)为目标化合物,研究了在可见光激发下(λ≥420 nm) BiPO4-Ln对目标污染物的光催化降解特性,结果表明,BiPO4-Ln相较纯BiPO4,其光吸收范围从紫外光扩大到可见光区域,在3种BiPO4-Ln催化剂中,BiPO4-Sm对RhB的吸附能力最强且其光催化活性较强,通过测定其在可见光下降解RhB过程中产生的活性物种,发现BiPO4-Ln在氧化降解RhB的过程中主要涉及到·OH及O-2·的氧化机理。

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