Work

Solar light-induced photocatalytic degradation of 2,4-dichlorophenoxyacetic acid using chitosan/g-C3N4 beads

Year: 2024

Type: article

Abstract: Remediation of persistent organic pollutants such as pesticides and personal care products in water has attained immense research interest due to the commercialization feasibility of Advanced Oxidation Processes. Thus, the present study focuses on the solar-light assisted photocatalytic degradation of commonly used pesticide, i.e., 2,4-dichlorophenoxyacetic acid. The chitosan-modified g-C 3 N 4 beads (CS/g-C 3 N 4 ) were synthesized using the phase inversion method. Synergistic activity of chitosan with g-C 3 N 4 in the form of recoverable beads with solar light-based photocatalytic activity has been brought as the novelty of this work. The chitosan-modified g-C 3 N 4 beads have been studied for their morphological and structural characterization. The diffuse reflectance spectroscopy shows the variation in the bandgap from 2.79 (g-C 3 N 4 ) to 2.6 eV (CS/g-C 3 N 4 beads) due to the incorporation of chitosan. The photocatalytic removal of 2,4-D under solar light using CS/g-C 3 N 4 is found to be 83 %. The prepared beads showed no significant loss in catalytic activity even after four cycles. Therefore, CS/g-C 3 N 4 is a low-cost, affordable, and environmentally friendly material for the redemption of pesticides like 2,4-D.

Source: Desalination and Water Treatment

DOI: 10.1016/j.dwt.2024.100825

Authors: Keerthiga Gopalram, Akash Balakrishnan

Institution: SRM Institute of Science and Technology

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $1,000