Work

Sunlight-driven removal of tetracycline over l -histidine–MgO–AgI composites: synthesis, morphological insight, and enhanced thermal stability

Year: 2026

Type: article

Abstract: l-Histidine-MgO-AgI composites were produced by varying MgO and AgI content from 1 to 10 wt%. FTIR, UV-vis, photoluminescence (PL), and EDX data confirmed successful incorporation of MgO and AgI into l-histidine. FESEM analysis revealed a transition from relatively uniform sheet-like structures in pristine l-histidine (50-600 nm) to irregular, aggregated sheet-like morphologies in the l-histidine-MgO-AgI composites (50-800 nm). XRD analysis revealed an average crystallite size of 33.12 nm for the composites. Thermogravimetric analysis (TGA) indicated enhanced thermal stability of the composites. The composite containing 10 wt% MgO and AgI achieved the highest degradation efficiencies of 68.86% and 67.04% under sunlight and UV-lamp irradiation, respectively. HPLC analysis verified the efficient photocatalytic degradation of TC, while TOC analysis revealed a mineralization efficiency of 38.23%. The photocatalyst retained 64.19% degradation efficiency after three cycles. LC-MS analysis identified the degradation intermediates of TC. These results emphasize the potential of l-histidine-MgO-AgI composites for efficient photocatalytic removal of TC.

Source: RSC Advances

DOI: 10.1039/d6ra08521k

Authors: Bristi Dutta, Mohammad Mizanur Rahman Khan, Jae-Ho Jeong

Institutions: Shahjalal University of Science and Technology, Chung-Ang University

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funders: Chung-Ang University, Korea Institute of Energy Technology Evaluation and Planning