Inverse opal type porous g-C3N4 towards H2O2 production and in-situ photoFenton gemifloxacin degradation driven by amorphous framework and nitrogen vacancy

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2025-01-27 DOI:10.1016/j.apcata.2025.120141

Sriram Mansingh , Kundan Kumar Das , Ritik Mohanty , Newmoon Priyadarshini, Kulamani Parida

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引用次数: 0

Abstract

H₂O₂ production by utilizing renewable feedstocks like solar energy, H₂O and O₂ through artificial photocatalysis is an intriguing area of sustainable research. Porous and defect-oriented g-C₃N₄ is a promising metal free material for photon driven H₂O₂ generation via. O₂/H₂O redox pathway because of its benefitting features. The designed vacancy-oriented carbon nitride with amorphous character along with inverse opal type framework boost the overall O2 reduction rate and on-situ gemifloxacine (GFM) degradation. The PCN sample manifest the optimum peroxide generation (587 µmol/g/h and conversion efficiency of 0.011 %) which is 1.4 times higher than CN. The photoreduction goes predominantly via. both single electron two step, i.e., ^●O₂^- radical route confirms by scavenger and EPR test. Further, reduction reaction was also evaluated under different reaction condition, i.e., pH, sacrificial agent and purging gas type. Besides, PCN depicts enhanced onsite photo-fenton GFM degradation (78 % in 1 h) and the formed intermediates species alongside the mineralization 70 % is well demonstrated. This investigation serves as a guideline for the development of different amorphous and defect based photocatalysts for sustainable H₂O₂ generation and on-site photo-fenton activity with benchmark efficiency

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来源期刊

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.