高美赓,LIU Hongfei,GRETA Patzke.A2BO4尖晶石类催化剂在紫外可见光水氧化的研究[J].中国无机分析化学,2017,7(3):76-82.
A2BO4尖晶石类催化剂在紫外可见光水氧化的研究
Visible Light-driven Water Oxidation with Spinel as Photocatalysts
投稿时间:2016-12-08  最后修改时间:2017-06-05
DOI:doi:10.3969/j.issn.2095-1035.2017.03.020
中文关键词:  尖晶石  光催化  光水氧化
英文关键词:spinel  photocatalysis  water photo oxidation
基金项目:瑞士MaNEP基金(09102004)资助
        
作者单位
高美赓 中科院苏州纳米技术与纳米仿生研究所,江苏 苏州 215123
LIU Hongfei 瑞士苏黎世大学,苏黎世 CH-8057
GRETA Patzke 瑞士苏黎世大学,苏黎世 CH-8057
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中文摘要:
      采用溶胶-凝胶法制备LaxSr2-xMnO4尖晶石类光催化剂,确定了适用于LaxSr2-xMnO4的制备方法和条件,通过改变结构和组分实现光催化水氧化反应。实验表明,晶体的缺陷和晶格的变形影响光催化性能且x为0.3~0.6时都表现良好的催化活性,Na2S2O8 浓度过高不利于催化性能,可能发生其它的副反应。利用X-射线衍射(XRD)法, 气相色谱(GC)法、电化学循环伏安法、极化曲线法、X射线光电子能谱分析(XPS)法对结构和其催化性能进行表征。
英文摘要:
      LaxSr2-xMnO4 powders were prepared by sol-gel method. Major progress on the development of spinel-based alternative photocatalyst LaxSr2-xMnO4 for water splitting has been realized with help of modification arising from influence of conformation and chemical characteristics of A2BO4 material. The results of A2BO4 in photo catalytic activity demonstrated the encouraging prospects in crystal defects and crystal structure, offering a guild of structure relationship and activity in A2BO4 photocatalyst. LaxSr2-xMnO4 was proved to be an excellent photocatalyst for overall water oxidation under UV irradiation due to good stability and suitable band-edge position.
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