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

Ali Ayati; Bahareh Tanhaei; Fatemeh F. Bamoharram; Ali Ahmadpour; Philipp Maydannik; Mika Sillanpää

doi:10.1016/j.seppur.2016.07.015

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

Ali Ayati, Bahareh Tanhaei, Fatemeh F. Bamoharram, Ali Ahmadpour, Philipp Maydannik, Mika Sillanpää

Research output: Contribution to journal › Article › peer-review

52 Citations (Scopus)

Abstract

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 FTIR, 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.

Original language	English
Pages (from-to)	62-68
Number of pages	7
Journal	Separation and Purification Technology
Volume	171
DOIs	https://doi.org/10.1016/j.seppur.2016.07.015
Publication status	Published - 17 Oct 2016
Externally published	Yes

Keywords

Gold nanoparticle
Nitrobenzene
Photodegradation
Polyoxometalate
TiO nanotube

ASJC Scopus subject areas

Analytical Chemistry
Filtration and Separation

Access to Document

10.1016/j.seppur.2016.07.015

Cite this

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title = "Photocatalytic degradation of nitrobenzene by gold nanoparticles decorated polyoxometalate immobilized TiO2 nanotubes",

abstract = "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 FTIR, 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.",

keywords = "Gold nanoparticle, Nitrobenzene, Photodegradation, Polyoxometalate, TiO nanotube",

author = "Ali Ayati and Bahareh Tanhaei and Bamoharram, {Fatemeh F.} and Ali Ahmadpour and Philipp Maydannik and Mika Sillanp{\"a}{\"a}",

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T1 - Photocatalytic degradation of nitrobenzene by gold nanoparticles decorated polyoxometalate immobilized TiO2 nanotubes

AU - Ayati, Ali

AU - Tanhaei, Bahareh

AU - Bamoharram, Fatemeh F.

AU - Ahmadpour, Ali

AU - Maydannik, Philipp

AU - Sillanpää, Mika

PY - 2016/10/17

Y1 - 2016/10/17

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AB - 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 FTIR, 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.

KW - Gold nanoparticle

KW - Nitrobenzene

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KW - Polyoxometalate

KW - TiO nanotube

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