Graphitic carbon nitride (g-C3N4) as a super support for Mn–Ce based NH3-SCR catalyst: Improvement of catalytic performance and H2O/SO2 tolerance for NO  removal

Zhenzhen, Yang; Tang, Pengfei; Xu, Chenhui; Zhu, Bangchong; He, Yuhan; Duan, Tilan; He, Jianbo; Zhang, Genlei; Cui, Peng

doi:10.1016/j.joei.2023.101201

Cited by 9 publications

(1 citation statement)

References 61 publications

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“…In recent years, graphitic carbon nitride (g-C 3 N 4 ) possessing a layered structure similar to graphite has become a promising organic semiconductor with high photocatalytic activity in visible light (bandgap of ~2.7 eV). It has been used for various environmental applications, such as water and wastewater treatment, CO 2 and NOx reduction, and hydrogen production, amongst others, due to its interesting and unique physicochemical properties such as good chemical and thermal stability [4][5][6][7][8][9][10][11][12][13]. In addition, compared with other photocatalysts, g-C 3 N 4 can be easily synthesized by various synthesis techniques using melamine, cyanamide, urea, thiourea, and ammonium thiocyanate as raw materials [14,15].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Photocatalytic Oxidation and Detoxification of Simulated Agricultural Wastewater Contaminated with Boscalid Fungicide Using g-C3N4 Catalyst

Antonopoulou,

Tzamaria,

Miserli

et al. 2024

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In the present study, the photocatalytic oxidation and detoxification of aqueous matrices contaminated with boscalid using g-C3N4 catalyst and UV-A light was investigated. The UV-A/g-C3N4 process was found to achieve higher than 83% removal of boscalid in both matrices, with h+ and O2•− being the main species. UHPLC-HRMS analysis allowed the identification of five TPs, while the main degradation pathways involved hydroxylation, cyclization, and dechlorination. Scenedesmus rubescens microalgae species was exposed to boscalid solutions and lake water spiked with the fungicide before the photocatalytic treatment and inhibition in the growth rate was observed. An increase in the toxicity was also observed during the first stages of the treatment. The results from the in silico study correlate with the observed evolution of ecotoxicity during the application of the process, as some of the identified TPs were found to be toxic or very toxic for aquatic organisms. However, prolonged application of the process can lead to detoxification. It was also observed that the g-C3N4 catalyst can retain its photochemical stability and activity after at least three cycles. However, a slight decrease in the activity was observed when repeated another two times. This study demonstrated that the suggested photocatalytic process can both decrease the harmful effects of boscalid as well as effectively lower its concentration in water.

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