Photocatalytic degradation of nitrobenzene by gold nanoparticles decorated polyoxometalate immobilized TiO2 nanotubes

被引：46
|
作者：
Ayati, Ali [1 ,2 ]
Tanhaei, Bahareh [2 ]
Bamoharram, Fatemeh F. [3 ]
Ahmadpour, Ali [4 ]
Maydannik, Philipp [1 ]
Sillanpaa, Mika [1 ,5 ]
机构：
[1] Lappeenranta Univ Technol, Lab Green Chem, LUT Sch Engn Sci, Sammonkatu 12, FI-50130 Mikkeli, Finland
[2] Quchan Univ Adv Technol, Dept Chem Engn, Quchan, Iran
[3] Islamic Azad Univ, Mashhad Branch, Dept Chem, Mashhad, Iran
[4] Ferdowsi Univ Mashhad, Dept Chem Engn, Fac Engn, Mashhad, Iran
[5] Florida Int Univ, Dept Civil & Environm Engn, Miami, FL 33174 USA
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2016年 / 171卷
关键词：
TiO2; nanotube; Polyoxometalate; Gold nanoparticle; Nitrobenzene; Photodegradation; METAL NANOPARTICLES; AQUEOUS-SOLUTION; REMOVAL; TITANIA; UV; ACID; NANOCOMPOSITE; IRRADIATION; OZONATION; OXIDATION;
D O I：
10.1016/j.seppur.2016.07.015
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this study, the gold nanoparticles were deposited on the surface of tungstophosphoric acid immobilized TiO2 nanotubes, in which tungstophosphoric acid plays the roles of highly localized UV-switchable reducing agent and multifunctional photocatalyst linker molecule. The prepared novel nanocomposite was characterized with FUR, XRD, EDX and TEM and showed high photocatalytic efficiency in nitrobenzene removal. The results demonstrated that by introducing of AuNPs, the photocatalytic performance significantly enhanced, where the photocatalytic rate of using Au/HPW/TiO2-NTs nanocomposites was 4.1-fold increase compared to TiO2 nanotubes. The photocatalytic mechanism was proposed. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：62 / 68
页数：7
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