Universiti Teknologi Malaysia Institutional Repository

2D graphene oxide (go) doped p-n type bioi/bi2wo6 as a novel composite for photodegradation of bisphenol a (bpa) in aqueous solutions under uv-vis irradiation

Zhu, M. T. and Kurniawan, T. A. and You, Y. P. and Avtar, R and Othman, M. H. D. (2020) 2D graphene oxide (go) doped p-n type bioi/bi2wo6 as a novel composite for photodegradation of bisphenol a (bpa) in aqueous solutions under uv-vis irradiation. Materials Science & Engineering C-Materials for Biological Applications, 108 .

Full text not available from this repository.

Official URL: https://dx.doi.org/10.1016/j.msec.2019.110420

Abstract

Bisphenol A (BPA) is a refractory pollutant presents in water body that possesses serious threats to living organisms. To deal with it, we investigate and evaluate the effectiveness of GO@BiOI/Bi2WO6 composite as a novel photocatalyst for BPA removal from aqueous solutions under UV-vis irradiation. To enhance its removal for BPA, the surface of BiOI/Bi2WO6 is modified with graphene oxide (GO). This composite is named as 'GO@BiOI/Bi2WO6'. Changes in its physico-chemical properties after surface modification with GO are characterized by XRD, FTIR, FESEM-EDS, XPS, PL, and BET methods. Optimized conditions of BPA degradation by the composite are determined under identical conditions. Photodegradation pathways of BPA and its removal mechanisms by the same composite are presented. It is obvious that the GO@BiOI/Bi2WO6 has demonstrated its potential as a promising photocatalyst for BPA removal under UV-vis irradiation. About 81% of BPA removal is attained by the GO@BiOI/Bi2WO6 under optimized conditions (10 mg/L of BPA, 0.5 g/L of dose, pH 7 and 5 h of reaction time). The oxidation by-products of BPA degradation include p-hydroquinone or 4-(1-hydroxy-1-methyl-ethyl)-phenol. In spite of its performance, the treated effluents are still unable to meet the maximum discharge limit of < 1 mg/L set by national legislation. Therefore, subsequent biological processes are essential to maximize its biodegradation in the wastewater samples before their discharge into waterbody.

Item Type:Article
Uncontrolled Keywords:carbon-based materials, heterojunction, hybrid photocatalysts
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:86404
Deposited By: Narimah Nawil
Deposited On:31 Aug 2020 14:02
Last Modified:13 Oct 2020 02:08

Repository Staff Only: item control page