TY - JOUR
T1 - Fe Immobilized within Accordion-Like Tubular Carbon Nitride As a Catalyst for the Fenton-Like Degradation of Ranitidine
T2 - Synergetic Roles of •OH and 1O2
AU - Yin, Yu
AU - Hu, Bing
AU - Asif, Abdul Hannan
AU - Zhu, Chengzhang
AU - Li, Wenning
AU - He, Linheng
AU - Cui, Sheng
AU - Wang, Shaobin
AU - Sun, Hongqi
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2024/8/28
Y1 - 2024/8/28
N2 - Advanced oxidation processes (AOPs) based on H2O2 are considered effective strategies to remove emerging organic pollutants from water bodies. In this work, Fenton-like Fe-based catalysts were fabricated through a simple hydrothermal calcination method. Fe was immobilized within carbon nitride with a structure of accordion-like hollow nanotubes enriched with open chinks (atCN). The Fe-atCN catalysts were employed for Fenton-like reactions to degrade ranitidine (RAN). Due to the unique structure of the atCN substrate and the Fe-N interactions established between highly dispersed Fe sites and the atCN matrix, the 3.4Fe-atCN/H2O2 system was able to completely eliminate RAN within 30 min at an initial pH of 3 (k = 0.143 min-1). It also remained highly active after four cycles of regeneration. Moreover, the 3.4Fe-atCN/H2O2 system showed good adaptability in a pH range of 3-6, with coexisting inorganic anions, and in diverse water bodies. Good oxidative activities on various pollutants were also demonstrated, including sulfamethoxazole, tetracycline, 4-chlorophenol, and methyl orange. Afterward, mechanism exploration suggested that the dominant reactive oxygen species driving the degradation of RAN in the 3.4Fe-atCN/H2O2 system were not only the generally reported •OH but also the unexpected nonradical of 1O2. The activation mechanism of 3.4Fe-atCN to H2O2, intermediates, and degradation pathways of RAN were then unveiled for providing further guidance to the development of Fenton-like technology.
AB - Advanced oxidation processes (AOPs) based on H2O2 are considered effective strategies to remove emerging organic pollutants from water bodies. In this work, Fenton-like Fe-based catalysts were fabricated through a simple hydrothermal calcination method. Fe was immobilized within carbon nitride with a structure of accordion-like hollow nanotubes enriched with open chinks (atCN). The Fe-atCN catalysts were employed for Fenton-like reactions to degrade ranitidine (RAN). Due to the unique structure of the atCN substrate and the Fe-N interactions established between highly dispersed Fe sites and the atCN matrix, the 3.4Fe-atCN/H2O2 system was able to completely eliminate RAN within 30 min at an initial pH of 3 (k = 0.143 min-1). It also remained highly active after four cycles of regeneration. Moreover, the 3.4Fe-atCN/H2O2 system showed good adaptability in a pH range of 3-6, with coexisting inorganic anions, and in diverse water bodies. Good oxidative activities on various pollutants were also demonstrated, including sulfamethoxazole, tetracycline, 4-chlorophenol, and methyl orange. Afterward, mechanism exploration suggested that the dominant reactive oxygen species driving the degradation of RAN in the 3.4Fe-atCN/H2O2 system were not only the generally reported •OH but also the unexpected nonradical of 1O2. The activation mechanism of 3.4Fe-atCN to H2O2, intermediates, and degradation pathways of RAN were then unveiled for providing further guidance to the development of Fenton-like technology.
UR - http://www.scopus.com/inward/record.url?scp=85201366848&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.4c02269
DO - 10.1021/acs.iecr.4c02269
M3 - Article
AN - SCOPUS:85201366848
SN - 0888-5885
VL - 63
SP - 15165
EP - 15175
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 34
ER -