Treatment of wastewater containing organic pollutants in the presence of N-doped graphitic carbon and Co3O4/peroxymonosulfate


AKÇAY H. T., DEMİR A., ÖZÇİFÇİ Z., Yumak T., KELEŞ T.

CARBON LETTERS, vol.33, no.5, pp.1445-1460, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 33 Issue: 5
  • Publication Date: 2023
  • Doi Number: 10.1007/s42823-022-00452-5
  • Journal Name: CARBON LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, INSPEC
  • Page Numbers: pp.1445-1460
  • Keywords: Peroxymonosulfate, Rhodamine B, 2, 4, 6-Trichlorophenol, Catalytic degradation, Water treatment, ACTIVATED CARBON, HETEROGENEOUS ACTIVATION, DEGRADATION, PEROXYMONOSULFATE, SULFATE, 2,4,6-TRICHLOROPHENOL, NANOPARTICLES, PERFORMANCE, TEMPLATE, CO3O4
  • Recep Tayyip Erdoğan University Affiliated: Yes

Abstract

The disposal of organic pollutants is one of the important research topics. Some of the studies in this field are based on the degradation of organic pollutants with a catalytic agent. The cobalt tetraoxide/peroxymonosulfate system is an important catalytic system used for the radical degradation of organic pollutants. To increase the catalytic efficiency of such reactions, graphitization of activated carbon used as a support solid and nitrogen doping to the carbon structure are commonly used methods. In this study, cobalt tetraoxide production, N-doping and graphitization were carried out in a single step by heat treatment of activated carbon doped with the phthlocyanine cobalt (II) complex. The catalytic performance of the catalyst/peroxymonosulfate system was investigated by changing the pH, catalyst, and PMS concentration parameters on rhodamine B and 1,3,5 trichlorophenol, which were used as models. It was seen that the catalysts had 97% activity on rhodamine B in 16 min and 100% on 1,3,5 trichlorophenol in 6 min. It was observed that the catalysts continued to show high catalytic activity for five cycles in reusability studies and had a very low cobalt leaching rate. These results are in good agreement with previously published studies. In line with these results, the synthesized N-doped graphitic carbon/Co3O4 catalyst can be used as an effective catalyst for wastewater treatments.