Response surface approach for visible light assisted photocatalytic degradation of ortho nitrophenol by magnetically separable TiO2/CS nanocomposite

Afzal, Saba and Julkapli, Nurhidayatullaili Muhd and Lee, Kian Mun (2019) Response surface approach for visible light assisted photocatalytic degradation of ortho nitrophenol by magnetically separable TiO2/CS nanocomposite. Materials Science in Semiconductor Processing, 99. pp. 34-43. ISSN 1369-8001, DOI https://doi.org/10.1016/j.mssp.2019.04.022.

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Official URL: https://doi.org/10.1016/j.mssp.2019.04.022

Abstract

Visible light induces photocatalytic degradation technology has gained increasing interest in the treatment of organic pollutants for the wastewater system. In this study, magnetically separable nanocomposite (M-TiO 2 /CS) was successfully synthesized with a narrow band gap (2.85 eV) than pure TiO 2 . A central composited design (CCD) coupled with response surface methodology (RSM) was effectively utilized to inquire about the photocatalytic degradation of ONP degradation by using M-TiO 2 /CS. Three independent factors including the M-TiO 2 /CS loading, initial ONP concentration, and pH of the solution were examined in details. Based on the results obtained from RSM analyses, an efficient pathway leading to the high degradation rate (92%) was achieved by applying 0.02 g of M-TiO 2 /CS dosage with 30 mg/L of a concentration of ONP at pH 6 for 180 min. The experimental results fit well with the derived response model (R 2 = 0.9789). The current study proposed a cost-effective and highly efficient approach to wastewater pollution issues. © 2019

Item Type: Article
Funders: UNSPECIFIED
Uncontrolled Keywords: Wastewater; ONP; Photocatalysis; TiO2; CCD; RSM
Subjects: Q Science > QD Chemistry
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 18 May 2020 05:12
Last Modified: 18 May 2020 05:12
URI: http://eprints.um.edu.my/id/eprint/24313

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