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ScientificWorldJournal. 2014;2014:342020. doi: 10.1155/2014/342020. Epub 2014 Jun 29.

Photocatalytic degradation of DIPA using bimetallic Cu-Ni/TiO2 photocatalyst under visible light irradiation.

Author information

1
Chemical Engineering Department, Universiti Teknologi PETRONAS, 31750 Tronoh, Malaysia ; COMSATS Institute of Information Technology, Tobe Camp, University Road, Abbottabad 22060, Pakistan.
2
Chemical Engineering Department, Universiti Teknologi PETRONAS, 31750 Tronoh, Malaysia.
3
Fundamental & Applied Sciences Department, Universiti Teknologi PETRONAS, 31750 Tronoh, Malaysia.
4
COMSATS Institute of Information Technology, Tobe Camp, University Road, Abbottabad 22060, Pakistan ; Fundamental & Applied Sciences Department, Universiti Teknologi PETRONAS, 31750 Tronoh, Malaysia.

Abstract

Bimetallic Cu-Ni/TiO2 photocatalysts were synthesized using wet impregnation (WI) method with TiO2 (Degussa-P25) as support and calcined at different temperatures (180, 200, and 300°C) for the photodegradation of DIPA under visible light. The photocatalysts were characterized using TGA, FESEM, UV-Vis diffuse reflectance spectroscopy, fourier transform infrared spectroscopy (FTIR) and temperature programmed reduction (TPR). The results from the photodegradation experiments revealed that the Cu-Ni/TiO2 photocatalysts exhibited much higher photocatalytic activities compared to bare TiO2. It was found that photocatalyst calcined at 200°C had the highest photocatalyst activities with highest chemical oxygen demand (COD) removal (86.82%). According to the structural and surface analysis, the enhanced photocatalytic activity could be attributed to its strong absorption into the visible region and high metal dispersion.

PMID:
25105158
PMCID:
PMC4101228
DOI:
10.1155/2014/342020
[Indexed for MEDLINE]
Free PMC Article

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