Photocatalytic Property of CsLaTa2O7/Na2Ta2O6 Hetero⁃Architecture

doi:10.3969/j.issn.1672-6952.2020.06.001

Journal of Liaoning Petrochemical University ›› 2020, Vol. 40 ›› Issue (6): 1-5.DOI: 10.3969/j.issn.1672-6952.2020.06.001

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Photocatalytic Property of CsLaTa₂O₇/Na₂Ta₂O₆ Hetero⁃Architecture

Zhou Wenli， Hu Jiaqiao， Qu Yongkang， Kong Xingang

School of Materials Science and Engineering，Shaanxi University of Science and Technology，Xi'an Shaanxi 710021，China

Received:2019-09-19 Revised:2019-11-25 Published:2020-12-25 Online:2020-12-30

CsLaTa₂O₇/Na₂Ta₂O₆异质结构的构建及光催化性能

周雯丽，胡佳乔，曲永康，孔新刚

陕西科技大学材料科学与工程学院，陕西西安 710021

通讯作者: 孔新刚（1983-），男，博士，副教授，从事光催化材料方面研究；E-mail：yezhu_1983@163.com。
作者简介:周雯丽（1993-），女，硕士研究生，从事光催化材料方面研究；E-mail：1011420096@qq.com。
基金资助:
陕西省教育厅产业化培育项目（19JC009）。

Abstract

Abstract: CsLaTa2O7/Na2Ta2O6 heterostructure photocatalyst was constructed via the growth of pyrochlore⁃type Na2Ta2O6 particles on the surface of layered structure CsLaTa2O7 using its metastable property through hydrothermal method. The CsLaTa2O7/Na2Ta2O6 was characterized by XRD, SEM, TEM, UV⁃Vis spectroscopy and PL spectroscopy. The results show that the CsLaTa2O7/Na2Ta2O6 heterostructure can effectively inhibit the recombination of photogenerated electrons and holes, and its photocatalytic performance under UV light is significantly higher than that of single phase. Methylene blue can be completely degraded within 10 min under the illumination of ultraviolet light.

Key words: Hetero?structure, CsLaTa₂O₇, Na₂Ta₂O₆, Photocatalysis

摘要： 利用层状结构CsLaTa2O7的亚稳特性，通过水热法在其表面原位合成烧绿石型Na2Ta2O6粒子，构建出CsLaTa2O7/Na2Ta2O6异质结构光催化剂。利用XRD、SEM、TEM、UV⁃Vis光谱和荧光光谱等测试手段，对CsLaTa2O7/Na2Ta2O6样品进行表征。结果表明，CsLaTa2O7/Na2Ta2O6异质结构可以有效地抑制光生电子和空穴的复合，并且在紫外光下光照10 min就能将亚甲基蓝染料完全降解，其紫外光下光催化性能明显高于单一相。

关键词: 异质结构, CsLaTa₂O₇, Na₂Ta₂O₆, 光催化

Zhou Wenli， Hu Jiaqiao， Qu Yongkang， Kong Xingang. Photocatalytic Property of CsLaTa₂O₇/Na₂Ta₂O₆ Hetero⁃Architecture[J]. Journal of Liaoning Petrochemical University, 2020, 40(6): 1-5.

周雯丽，胡佳乔，曲永康，孔新刚. CsLaTa₂O₇/Na₂Ta₂O₆异质结构的构建及光催化性能[J]. 辽宁石油化工大学学报, 2020, 40(6): 1-5.

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Photocatalytic Property of CsLaTa₂O₇/Na₂Ta₂O₆ Hetero⁃Architecture

CsLaTa₂O₇/Na₂Ta₂O₆异质结构的构建及光催化性能

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