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

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(5), pp.1445-1460
  • DOI : 10.1007/s42823-022-00452-5
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 20, 2022
  • Accepted : December 20, 2022
  • Published : August 1, 2023

Akçay Hakkı Türker 1 Demir Adem 2 Özçifçi Zehra 1 Yumak Tuğrul 3 Keleş Turgut 2

1Department of Chemistry, Faculty of Arts and Sciences, Recep Tayyip Erdoğan University, Rize, Turkey
2Central Research Laboratory, Application and Research Centre, Recep Tayyip Erdoğan University, Rize, Turkey
3Department of Chemistry, Faculty of Arts and Sciences, Sinop University, Sinop, Turkey

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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.

Citation status

* References for papers published after 2022 are currently being built.