Tailoring titanium dioxide by silver particles for photocatalysis

被引：23

作者：

Ibukun, Olaniyan ^{[1
]}

Jeong, Hae Kyung ^{[1
,2
]}

机构：

[1] Daegu Univ, Inst Basic Sci, Dept Phys, Gyongsan 712714, South Korea

[2] Daegu Univ, Inst Ind & Tech, Dept Mat Energy Sci & Engn, Gyongsan 712714, South Korea

来源：

CURRENT APPLIED PHYSICS | 2020年 / 20卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Titanium dioxide; Silver; Bandgap; Visible light; Photocatalys; SURFACE-PLASMON RESONANCE; VISIBLE-LIGHT; TIO2; DEGRADATION; NANOPARTICLES; NANOCOMPOSITES; NANOMATERIALS; NANOTUBES; ARRAYS; WATER;

D O I：

10.1016/j.cap.2019.10.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Titanium dioxide-silver (TiO2-Ag) composites are synthesized by using the hydrothermal method with different weight ratios for photocatalyst applications. With the introduction of Ag, the composites exhibited absorbance in visible region, and the bandgap also decreased by 0.45 eV. The TiO2-Ag composite with 5:7 ratio shows the best photocatalytic degradation of methylene blue, the highest photocurrent response, and the lowest electrochemical impedance, thus exhibiting the best photocatalytic performance. The introduction of Ag into TiO2 retards the recombination time of the photo-generated electrons and holes as well as increases the charge transfer rate at interfaces of the composites.

引用

页码：23 / 28

页数：6

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