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Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature

Bimetallic Cu−Ni/TiO2 photocatalysts were prepared at different temperatures with varying Cu:Ni mass compositions. The photocatalysts were further calcined at selected temperatures. Characterization procedures were carried out on the photocatalysts to understand the correlation between the photoca...

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Main Authors: Riaz, Nadia, Chong, Fai Kait, Man, Zakaria, Khan, Saqib, Dutta, Binay K.
Format: Citation Index Journal
Published: 2013
Subjects:
QD Chemistry
TP Chemical technology
Online Access:http://eprints.utp.edu.my/9862/1/I%26ECresearch%202013.pdf
http://eprints.utp.edu.my/9862/
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spelling my.utp.eprints.98622013-07-11T00:08:32Z Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature Riaz, Nadia Chong, Fai Kait Man, Zakaria Khan, Saqib Dutta, Binay K. QD Chemistry TP Chemical technology Bimetallic Cu−Ni/TiO2 photocatalysts were prepared at different temperatures with varying Cu:Ni mass compositions. The photocatalysts were further calcined at selected temperatures. Characterization procedures were carried out on the photocatalysts to understand the correlation between the photocatalytic activity and the physicochemical and morphological properties. Results from the XRD, FESEM-EDX mapping, and HRTEM analyses were in favor of the metal particles existing in the form of well-dispersed oxides on TiO2 surface. The surface area of the photocatalysts was almost similar to the bare TiO2 ∼43 m2 g−1 except for 1Cu:9Ni-200-b observed with a higher surface area (53.8 m2 g−1) as compared to other photocatalysts. The photocatalyst performance of the bimetallic system is promising as compared to bare TiO2 and the monometallic photocatalysts. Results for photodegradation studies showed that 1:9 Cu:Ni mass composition was observed with 100% Orange II removal as compared to other Cu:Ni mass compositions. The 1Cu:9Ni-200-a photocatalyst prepared at lower temperature (8−10 °C) displayed 100% Orange II decolorization as compared to 1Cu:9Ni-200-b (prepared at higher temperature of 25 °C) with 65.1% dye removal. Although the results from UV−vis spectra showed the disappearance of the visible band (indicating 100% Orange II removal), TOC analysis indicated the presence of organic compounds derived from the dye degradation process. Therefore, longer irradiation time is required to break the chromophore groups in the degradation intermediates to obtain 100% TOC removal. 2013-03-27 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/9862/1/I%26ECresearch%202013.pdf Riaz, Nadia and Chong, Fai Kait and Man, Zakaria and Khan, Saqib and Dutta, Binay K. (2013) Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature. [Citation Index Journal] http://eprints.utp.edu.my/9862/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic QD Chemistry
TP Chemical technology
spellingShingle QD Chemistry
TP Chemical technology
Riaz, Nadia
Chong, Fai Kait
Man, Zakaria
Khan, Saqib
Dutta, Binay K.
Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature
description Bimetallic Cu−Ni/TiO2 photocatalysts were prepared at different temperatures with varying Cu:Ni mass compositions. The photocatalysts were further calcined at selected temperatures. Characterization procedures were carried out on the photocatalysts to understand the correlation between the photocatalytic activity and the physicochemical and morphological properties. Results from the XRD, FESEM-EDX mapping, and HRTEM analyses were in favor of the metal particles existing in the form of well-dispersed oxides on TiO2 surface. The surface area of the photocatalysts was almost similar to the bare TiO2 ∼43 m2 g−1 except for 1Cu:9Ni-200-b observed with a higher surface area (53.8 m2 g−1) as compared to other photocatalysts. The photocatalyst performance of the bimetallic system is promising as compared to bare TiO2 and the monometallic photocatalysts. Results for photodegradation studies showed that 1:9 Cu:Ni mass composition was observed with 100% Orange II removal as compared to other Cu:Ni mass compositions. The 1Cu:9Ni-200-a photocatalyst prepared at lower temperature (8−10 °C) displayed 100% Orange II decolorization as compared to 1Cu:9Ni-200-b (prepared at higher temperature of 25 °C) with 65.1% dye removal. Although the results from UV−vis spectra showed the disappearance of the visible band (indicating 100% Orange II removal), TOC analysis indicated the presence of organic compounds derived from the dye degradation process. Therefore, longer irradiation time is required to break the chromophore groups in the degradation intermediates to obtain 100% TOC removal.
format Citation Index Journal
author Riaz, Nadia
Chong, Fai Kait
Man, Zakaria
Khan, Saqib
Dutta, Binay K.
author_facet Riaz, Nadia
Chong, Fai Kait
Man, Zakaria
Khan, Saqib
Dutta, Binay K.
author_sort Riaz, Nadia
title Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature
title_short Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature
title_full Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature
title_fullStr Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature
title_full_unstemmed Photodegradation of Orange II under Visible Light Using Cu−Ni/TiO2: Influence of Cu:Ni Mass Composition, Preparation, and Calcination Temperature
title_sort photodegradation of orange ii under visible light using cu−ni/tio2: influence of cu:ni mass composition, preparation, and calcination temperature
publishDate 2013
url http://eprints.utp.edu.my/9862/1/I%26ECresearch%202013.pdf
http://eprints.utp.edu.my/9862/
_version_ 1738655796360642560
score 13.211869

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