Plasmon resonance enhanced photocatalysis under visible light with Au/Cu-TiO2 nanoparticles: Removal Cr (VI) from water as a case of study

M. A. Gondal; M. A. Dastageer; S. G. Rashid; S. M. Zubair; M. A. Ali; D. H. Anjum; J. H. Lienhard; G. H. McKinley; K. Varanasi

doi:10.1166/sam.2013.1669

Plasmon resonance enhanced photocatalysis under visible light with Au/Cu-TiO₂ nanoparticles: Removal Cr (VI) from water as a case of study

M. A. Gondal^*
, M. A. Dastageer
, S. G. Rashid
, S. M. Zubair
, M. A. Ali
, D. H. Anjum
, J. H. Lienhard
, G. H. McKinley
, K. Varanasi

^*Corresponding author for this work

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

17 Scopus citations

Abstract

Gold modified copper doped titania (Au/Cu:TiO₂) nanoparticles were synthesized by a modified sol gel method and characterized using XRD, optical and TEM based techniques. The as-prepared material contained anatase phase particles with quasi-spherical morphology, showing enhanced absorption in the visible region and low photoluminescence emission intensity. Photocatalytic reduction of Cr (VI) in aqueous suspension with the Au/Cu:TiO₂catalyst under 532 nm laser radiation and a visible broad band lamp source yielded 96% and 45% removal, respectively, without any additives. The enhanced photocatalytic activity can be attributed to the improved plasmonic effect due to gold modification and the expanded visible absorption due to copper doping. Moreover a comparative study of the material properties and catalytic activity of TiO₂, Cu-TiO₂and Au/Cu-TiO₂ was carried out.

Original language	English
Pages (from-to)	2007-2014
Number of pages	8
Journal	Science of Advanced Materials
Volume	5
Issue number	12
DOIs	https://doi.org/10.1166/sam.2013.1669
State	Published - Dec 2013

Keywords

Au/Cu-TiO nanocomposite
Heterogeneous catalysis
Plasmonic metals
Visible light active catalyst
Waste water treatment using solar radiations

ASJC Scopus subject areas

General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1166/sam.2013.1669

Cite this

Gondal, M. A., Dastageer, M. A., Rashid, S. G., Zubair, S. M., Ali, M. A., Anjum, D. H., Lienhard, J. H., McKinley, G. H., & Varanasi, K. (2013). Plasmon resonance enhanced photocatalysis under visible light with Au/Cu-TiO₂ nanoparticles: Removal Cr (VI) from water as a case of study. Science of Advanced Materials, 5(12), 2007-2014. https://doi.org/10.1166/sam.2013.1669

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title = "Plasmon resonance enhanced photocatalysis under visible light with Au/Cu-TiO2 nanoparticles: Removal Cr (VI) from water as a case of study",

abstract = "Gold modified copper doped titania (Au/Cu:TiO2) nanoparticles were synthesized by a modified sol gel method and characterized using XRD, optical and TEM based techniques. The as-prepared material contained anatase phase particles with quasi-spherical morphology, showing enhanced absorption in the visible region and low photoluminescence emission intensity. Photocatalytic reduction of Cr (VI) in aqueous suspension with the Au/Cu:TiO2catalyst under 532 nm laser radiation and a visible broad band lamp source yielded 96\% and 45\% removal, respectively, without any additives. The enhanced photocatalytic activity can be attributed to the improved plasmonic effect due to gold modification and the expanded visible absorption due to copper doping. Moreover a comparative study of the material properties and catalytic activity of TiO2, Cu-TiO2and Au/Cu-TiO2 was carried out.",

keywords = "Au/Cu-TiO nanocomposite, Heterogeneous catalysis, Plasmonic metals, Visible light active catalyst, Waste water treatment using solar radiations",

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AU - Gondal, M. A.

AU - Dastageer, M. A.

AU - Rashid, S. G.

AU - Zubair, S. M.

AU - Ali, M. A.

AU - Anjum, D. H.

AU - Lienhard, J. H.

AU - McKinley, G. H.

AU - Varanasi, K.

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AB - Gold modified copper doped titania (Au/Cu:TiO2) nanoparticles were synthesized by a modified sol gel method and characterized using XRD, optical and TEM based techniques. The as-prepared material contained anatase phase particles with quasi-spherical morphology, showing enhanced absorption in the visible region and low photoluminescence emission intensity. Photocatalytic reduction of Cr (VI) in aqueous suspension with the Au/Cu:TiO2catalyst under 532 nm laser radiation and a visible broad band lamp source yielded 96% and 45% removal, respectively, without any additives. The enhanced photocatalytic activity can be attributed to the improved plasmonic effect due to gold modification and the expanded visible absorption due to copper doping. Moreover a comparative study of the material properties and catalytic activity of TiO2, Cu-TiO2and Au/Cu-TiO2 was carried out.

KW - Au/Cu-TiO nanocomposite

KW - Heterogeneous catalysis

KW - Plasmonic metals

KW - Visible light active catalyst

KW - Waste water treatment using solar radiations

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