Effect of ytterbium doping concentration on structural, optical and photocatalytic properties of TiO2 thin films

被引：41

作者：

Borrego Perez, J. A. ^{[1
,2
]}

Courel, Maykel ^{[1
]}

Pal, Mou ^{[3
]}

Paraguay Delgado, F. ^{[4
]}

Mathews, N. R. ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Energias Renovables, Temixco 62580, Morelos, Mexico

[2] Univ Guadalajara, Ctr Univ Valles, Carretera Guadalajara Ameca Km 45-5, Ameca 46600, Jalisco, Mexico

[3] BUAP, Inst Fis, Av San Claudio & Blvd 18 Sur San Manuel, Puebla 72570, Mexico

[4] Ctr Invest Mat Avanzados CIMAV, Dept Mat Nanoestruct, Chihuahua, Chihuahua, Mexico

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 17期

关键词：

TiO2; Yb doping; Thin films; Heterogeneous photocatalysis; METHYLENE-BLUE; DEGRADATION; NANOPARTICLES; MECHANISMS; EUROPIUM; ANATASE; ENERGY; ER3+; YB3+;

D O I：

10.1016/j.ceramint.2017.08.141

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ytterbium (Yb) doped TiO2 thin films have been synthesized by sol-gel spin -coating technique. Films with different Yb concentrations such as 0.5, 1, 2, 4 wt% were deposited and the impact of the dopant concentration on their physicochemical properties was evaluated. The films were characterized by X -Ray diffraction, transmission electron microscopy, Raman spectroscopy, UV Vis transmittance spectroscopy and photoresponse. The results showed that the incorporation of ytterbium modified the properties of TiO2 films. The photocatalytic efficiency of TiO2:Yb films was determined using methylene blue (MB) as the generic pollutant. Compared to undoped TiO2, 1 wt% Yb doped films exhibited higher photocatalytic activity toward MB degradation under UV light. When the amount of Yb dopant concentration was increased, there was a negative effect on the photosensitivity and photocatalysis.

引用

页码：15777 / 15784

页数：8

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