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Vol. 30 No. 4 (2018): Vol 30 Issue 4

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A Comparative Photocatalytic Activity of LiNbO3 and TiO2 by Investigating the Removal Efficiency of Toluene from Indoor Air

https://doi.org/10.14233/ajchem.2018.21088
Ranjit K. Nath
Department of Chemistry, Faculty of Engineering & Technology, Chittagong University of Engineering and Technology (CUET), Chittagong-4349, Bangladesh; Sustainable Construction Materials and Building Systems (SUCOMBS) Research Group, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia
Rajia Sultana
Department of Chemistry, Faculty of Engineering & Technology, Chittagong University of Engineering and Technology (CUET), Chittagong-4349, Bangladesh
Roksana Khatun
Department of Chemistry, Faculty of Engineering & Technology, Chittagong University of Engineering and Technology (CUET), Chittagong-4349, Bangladesh
Rashadul Hossain
Department of Chemistry, Faculty of Engineering & Technology, Chittagong University of Engineering and Technology (CUET), Chittagong-4349, Bangladesh
M.F.M. Zain
Sustainable Construction Materials and Building Systems (SUCOMBS) Research Group, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia

Corresponding Author(s) : Ranjit K. Nath

rkn_chem@yahoo.com

Asian Journal of Chemistry, Vol. 30 No. 4 (2018): Vol 30 Issue 4

Abstract

The quality of the indoor environment has become a major health consideration, because air pollution can be several times higher than outdoors. Photocatalytic materials can remove air borne contaminants like, volatile organic compounds (VOCs) that may toxic and harmful for human health. In this study, lithium niobate (LiNbO3) and titanium dioxide (TiO2) were used as catalyst to compare their efficiencies in degradation and absorption of toluene. Toluene was used as a model of volatile organic compound that can be found in indoor environment. Experiments were conducted in a photocatalytic test reactor, utilizing concrete blocks coated with LiNbO3 and TiO2 under UV light. Different concentrations of toluene were loaded and passed through the photocatalytic reactor and the removal efficiency of volatile organic compound was determined by GC-FID and GC-MS multi-analyzer. The findings demonstrate the stronger adsorption capacity and higher photodegradation efficiency can be achieved by LiNbO3 more than TiO2.

Keywords

Photocatalysts Photodegradation Volatile organic compounds Toluene Indoor air purification Air-cleaning
Nath, R. K., Sultana, R., Khatun, R., Hossain, R., & Zain, M. (2018). A Comparative Photocatalytic Activity of LiNbO3 and TiO2 by Investigating the Removal Efficiency of Toluene from Indoor Air. Asian Journal of Chemistry, 30(4), 845–852. https://doi.org/10.14233/ajchem.2018.21088
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