An efficient electrochemical degradation of toxic pollutants in wastewater using BiOBr/BiVO4 hierarchical structured electrode material

V Uma Shankar; Abdullah K Alanazi; P Senthil Kumar; Jnanesh Anand; G Prasannamedha; Hala M Abo-Dief; Gayathri Rangasamy

doi:10.1016/j.chemosphere.2023.139619

An efficient electrochemical degradation of toxic pollutants in wastewater using BiOBr/BiVO₄ hierarchical structured electrode material

Chemosphere. 2023 Oct:338:139619. doi: 10.1016/j.chemosphere.2023.139619. Epub 2023 Jul 22.

Authors

V Uma Shankar¹, Abdullah K Alanazi², P Senthil Kumar³, Jnanesh Anand¹, G Prasannamedha¹, Hala M Abo-Dief⁴, Gayathri Rangasamy⁵

Affiliations

¹ Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India.
² Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia. Electronic address: [email protected].
³ Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India; Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia. Electronic address: [email protected].
⁴ Department of Science and Technology, University College-Ranyah, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
⁵ School of Engineering, Lebanese American University, Byblos, Lebanon; Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India.

PMID: 37487975
DOI: 10.1016/j.chemosphere.2023.139619

Abstract

The electrochemical degradation of alizarin red dye was studied using bismuth oxyhalide attached to bismuth vanadate nanocomposite synthesized via a simple solvothermal method. The electrochemical degradation of alizarin red dye was treated at current densities of 3 and 5 mA cm^-1 for 30 min under different supporting electrolyte mediums (NaCl and KCl). Also, the electrochemical degradation of BiOBr/BiVO₄ electrode shows higher degradation percentages of 97 and 99 for NaCl and KCl electrolyte solutions, which are higher degradation percentages than pure BiVO₄ electrode (88 and 91 for NaCl and KCl). Also, the BiOBr/BiVO₄ electrode shows 100% COD reduction during the 30th min of alizarin red dye using both NaCl and KCl electrolyte solutions. This may indicate that the prepared BiOBr/BiVO₄ electrode shows an efficient electrode material for the degradation of textile dyes.

Keywords: Alizarin red; Bismuth oxyhalides; COD; Electrochemical degradation; Solvothermal.

MeSH terms

Bismuth
Electrodes
Environmental Pollutants*
Sodium Chloride
Wastewater*

Substances

Wastewater
alizarin
bismuth oxybromide
Bismuth
Environmental Pollutants
Sodium Chloride