AgV7O18: A new silver vanadate semiconductor with photodegradation ability on dyes under visible-light irradiation

被引：13
|
作者：
Wang, Fengyun [1 ,2 ]
Zhang, Hongchao [1 ,2 ]
Liu, Lei [3 ]
Shin, Byoungchul [4 ]
Shan, Fukai [1 ,2 ]
机构：
[1] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China
[2] Qingdao Univ, Cultivat Base State Key Lab, Qingdao 266071, Peoples R China
[3] Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China
[4] Dong Eui Univ, Elect Ceram Ctr, Busan 614714, South Korea
来源：
MATERIALS LETTERS | 2016年 / 169卷
基金：
中国国家自然科学基金;
关键词：
Semiconductors; Nanocrystalline materials; Optical materials and properties; Photocatalysis; Electronic band structure;
D O I：
10.1016/j.matlet.2016.01.091
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new silver vanadate semiconductor AgV7O18 was prepared via the hydrothermal synthesis method. The sample crystallized in typical nanorods with a big length/diameter ratio and large specific surface area. The detailed band structures were reported. AgV7O18 nanorods have small band energy of 1.837 eV with indirect allowed electronic transitions. The narrowed band-gap is due to the hybridization between the Ag-d and O-p states in the valence band. The photocatalysis was investigated by photo-degradation of Rhodamine-B (RhB) irradiated by visible light. AgV7O18 has efficient photodegradation on RhB. The photocatalysis was discussed according to the band energy positions and the trapping experiments. (C)0 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：82 / 85
页数：4
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