Photocatalytic enhancement of TiO2 by B and Zr co-doping and modulation of microstructure

被引：42

作者：

Fu, Chengxin ^{[1
]}

Gong, Yinyan ^{[1
]}

Wu, Yitao ^{[1
]}

Liu, Jiaqi ^{[1
]}

Zhang, Zhen ^{[1
]}

Li, Can ^{[1
]}

Niu, Lengyuan ^{[1
]}

机构：

[1] China Jiliang Univ, Sch Mat Sci & Engn, Ctr Coordinat Bond Metrol & Engn, Hangzhou 310018, Zhejiang, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2016年 / 379卷

基金：

中国国家自然科学基金;

关键词：

Boron; Zirconium Photocatalyst; Co-doping; DOPED TIO2; ANATASE TIO2; OPTICAL-ABSORPTION; 1ST PRINCIPLES; FE; NANOPARTICLES; NANOMATERIALS; RUTILE; PHASE; BORON;

D O I：

10.1016/j.apsusc.2016.03.192

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Visible-light photodegradation test revealed that B and Zr co-doping can raise the photocatalytic ability of the undoped TiO2 by a fold. XRD crystallography and Raman phonon spectroscopy measurements suggest that the Zr4+ ions replace the Ti4+ ions while the B3+ ions occupy the interstitial sites, expanding the unit cell volume and reducing crystallite size. The incorporation of interstitial boron dopants creates oxygen vacancies (Ov(center dot center dot)) and reduce Ti4+ to Ti3+ to form [Ov(center dot center dot)Ti(3+)](+), which traps the carriers and prolongs carrier lifetime. Moreover, Zr4+ ions replace Ti4+ ions and form impurity levels, which could improve visible light response. The co-doped samples are benefited from both B interstitials and Zr substitutes. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：83 / 90

页数：8

共 47 条

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