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新型多金属氧酸盐K7BiW11O39Sn·11H2O制备及光催化降解模拟染料废水

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余悦, 朱秀华, 王炜, 王鹏远, 盛峰, 张蓉. 新型多金属氧酸盐K7BiW11O39Sn·11H2O制备及光催化降解模拟染料废水[J]. 环境化学, 2016, 35(5): 998-1006. doi: 10.7524/j.issn.0254-6108.2016.05.2015112202
引用本文: 余悦, 朱秀华, 王炜, 王鹏远, 盛峰, 张蓉. 新型多金属氧酸盐K7BiW11O39Sn·11H2O制备及光催化降解模拟染料废水[J]. 环境化学, 2016, 35(5): 998-1006. doi: 10.7524/j.issn.0254-6108.2016.05.2015112202
shu
YU Yue, ZHU Xiuhua, WANG Wei, WANG Pengyuan, SHENG Feng, ZHANG Rong. Synthesis of novel polyoxomatalate K7BiW11O39Sn·11H2O and Photocatalytic degradation of simulated dye wastewater[J]. Environmental Chemistry, 2016, 35(5): 998-1006. doi: 10.7524/j.issn.0254-6108.2016.05.2015112202
Citation: YU Yue, ZHU Xiuhua, WANG Wei, WANG Pengyuan, SHENG Feng, ZHANG Rong. Synthesis of novel polyoxomatalate K7BiW11O39Sn·11H2O and Photocatalytic degradation of simulated dye wastewater[J]. Environmental Chemistry, 2016, 35(5): 998-1006. doi: 10.7524/j.issn.0254-6108.2016.05.2015112202
shu

新型多金属氧酸盐K7BiW11O39Sn·11H2O制备及光催化降解模拟染料废水

  • 1.

    大连交通大学环境与化学工程学院, 大连, 116028;

  • 2.

    吉林大学化学学院, 长春, 130012;

  • 3.

    大连理工大学, 精细化工国家重点实验室, 大连, 116012

  • 基金项目:

    辽宁省高等学校优秀人才支持计划项目(LR2013019),辽宁省高等学校环境科学与技术重点实验室基金(LS2010031),大连理工大学精细化工国家重点实验室开放课题基金(KF0707)资助.

Synthesis of novel polyoxomatalate K7BiW11O39Sn·11H2O and Photocatalytic degradation of simulated dye wastewater

  • 1.

    School of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian, 116028, China;

  • 2.

    College of Chemistry, Jilin University, Changchun, 130012, China;

  • 3.

    State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116012, China

  • Fund Project: Supported by the Liaoning Province University Outstanding Scientific and Technological Personnel Support Plan (LR2013019), the Key Laboratory of Environmental Scienceand Technology, Education Department of Liaoning Province (LS2010031), the State Key Laboratory of Fine Chemical, DalianUniversity of Technology (KF0707).

  • 摘要: 本文采用水热合成法首次制备了一种新型多金属氧酸盐,采用扫描电镜(SEM)、扫描电镜-能谱(SEM-EDS)、X射线光电子能谱(XPS)、X射线衍射(XRD)、热重-差热分析(TG-DSC)、紫外可见吸收光谱(UV-Vis)、傅里叶变换红外光谱(FTIR),电感耦合等离子体发射光谱(ICP)等技术对其进行了表征,结果表明,所制备的化合物具有Keggin结构,为非晶体化合物,其分子式为K7BiW11O39Sn·11H2O (BiW11Sn).以酸性红299(AR299)为目标降解污染物,研究了自然日光辐照下BiW11Sn均相光催化AR299水溶液脱色降解活性.结果表明,BiW11Sn能有效的光催化AR299脱色降解.AR299溶液的初使pH值、初始浓度、催化剂投加量、光解时间对AR299光催化降解效果均有影响.20 mL,4 mg·L-1,初始pH值为5.4的AR299水溶液(溶液中BiW11Sn浓度为0.5 g·L-1),阳光下辐照3 h,其脱色率达到93.1%;其光催化降解反应遵循Langmuir-Hinshelwood准一级动力学方程;超氧负离子自由基为光催化降解过程中的重要活性物种.
    Abstract: A new polyoxometallate photocatalyst was synthesized by hydrothermal coprecipitation in this paper. It was characterized by SEM, SEM-EDS, XPS, XRD, TG-DSC, UV-Vis, FTIR, and ICP. The results indicated that the synthesized compound exhibited a Keggin structure and non-crystalline. The molecular formula of the compound is K7BiW11O39Sn·11H2O (BiW11Sn). Acid red 299 (AR299) was selected as the target degradation pollutant. The photocatalytic activities of BiW11Sn were evaluated by its photocatalytic degradation of AR299 with natural sunlight irradiation in aqueous solution. Results indicated that BiW11Sn effectively and photocatalytically decolorized AR299. The photocatalytic degradation of AR299 was influenced by the dosage of the catalyst, the photolysis time, the initial pH and the initial concentration of AR299. AR299 solution (20 mL, 4 mg·L-1, initial pH 5.4) with BiW11Sn (0.5 g·L-1) was irradiated for 3 h under sunlight, and the decoloration rate was 93.1%. BiW11Sn-mediated photocatalytic degradation of AR299 was a pseudo-first-order reaction and modeled by Langmuir-Hinshelwood-type kinetics. Superoxide anion radical (·O2-) was the important active species in the photocatalytic reaction.
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  • 收稿日期:  2015-11-22
  • 刊出日期:  2016-05-15
余悦, 朱秀华, 王炜, 王鹏远, 盛峰, 张蓉. 新型多金属氧酸盐K7BiW11O39Sn·11H2O制备及光催化降解模拟染料废水[J]. 环境化学, 2016, 35(5): 998-1006. doi: 10.7524/j.issn.0254-6108.2016.05.2015112202
引用本文: 余悦, 朱秀华, 王炜, 王鹏远, 盛峰, 张蓉. 新型多金属氧酸盐K7BiW11O39Sn·11H2O制备及光催化降解模拟染料废水[J]. 环境化学, 2016, 35(5): 998-1006. doi: 10.7524/j.issn.0254-6108.2016.05.2015112202
shu
YU Yue, ZHU Xiuhua, WANG Wei, WANG Pengyuan, SHENG Feng, ZHANG Rong. Synthesis of novel polyoxomatalate K7BiW11O39Sn·11H2O and Photocatalytic degradation of simulated dye wastewater[J]. Environmental Chemistry, 2016, 35(5): 998-1006. doi: 10.7524/j.issn.0254-6108.2016.05.2015112202
Citation: YU Yue, ZHU Xiuhua, WANG Wei, WANG Pengyuan, SHENG Feng, ZHANG Rong. Synthesis of novel polyoxomatalate K7BiW11O39Sn·11H2O and Photocatalytic degradation of simulated dye wastewater[J]. Environmental Chemistry, 2016, 35(5): 998-1006. doi: 10.7524/j.issn.0254-6108.2016.05.2015112202
shu

新型多金属氧酸盐K7BiW11O39Sn·11H2O制备及光催化降解模拟染料废水

  • 1.  大连交通大学环境与化学工程学院, 大连, 116028;
  • 2.  吉林大学化学学院, 长春, 130012;
  • 3.  大连理工大学, 精细化工国家重点实验室, 大连, 116012
  • 收稿日期:  2015-11-22
基金项目:

辽宁省高等学校优秀人才支持计划项目(LR2013019),辽宁省高等学校环境科学与技术重点实验室基金(LS2010031),大连理工大学精细化工国家重点实验室开放课题基金(KF0707)资助.

摘要: 本文采用水热合成法首次制备了一种新型多金属氧酸盐,采用扫描电镜(SEM)、扫描电镜-能谱(SEM-EDS)、X射线光电子能谱(XPS)、X射线衍射(XRD)、热重-差热分析(TG-DSC)、紫外可见吸收光谱(UV-Vis)、傅里叶变换红外光谱(FTIR),电感耦合等离子体发射光谱(ICP)等技术对其进行了表征,结果表明,所制备的化合物具有Keggin结构,为非晶体化合物,其分子式为K7BiW11O39Sn·11H2O (BiW11Sn).以酸性红299(AR299)为目标降解污染物,研究了自然日光辐照下BiW11Sn均相光催化AR299水溶液脱色降解活性.结果表明,BiW11Sn能有效的光催化AR299脱色降解.AR299溶液的初使pH值、初始浓度、催化剂投加量、光解时间对AR299光催化降解效果均有影响.20 mL,4 mg·L-1,初始pH值为5.4的AR299水溶液(溶液中BiW11Sn浓度为0.5 g·L-1),阳光下辐照3 h,其脱色率达到93.1%;其光催化降解反应遵循Langmuir-Hinshelwood准一级动力学方程;超氧负离子自由基为光催化降解过程中的重要活性物种.

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