Enhancing the photocatalytic performance of Co(II) and Cu(II) phthalocyanine by containing 1,3,4 thiadiazole groups in 4-nitrophenol oxidation reaction

SAKA E. T., Tekintas K., BEKİRCAN O., BIYIKLIOĞLU Z.

Inorganica Chimica Acta, cilt.547, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 547
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.ica.2022.121342
  • Dergi Adı: Inorganica Chimica Acta
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core
  • Anahtar Kelimeler: Photoxidation, Phthalocyanine, 4 thiadiazole, 4-Nitrophenol, Catalyst amount, Solvent effect, CATALYTIC-ACTIVITY, ELECTROCATALYTIC ACTIVITY, FE(II) PHTHALOCYANINES, SELECTIVE OXIDATION, AROMATIC-COMPOUNDS, VISIBLE-LIGHT, DEGRADATION, KINETICS, POLLUTANTS, PALLADIUM
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

© 2022Designing an eco-friendly and low cost catalyst with high efficiency and selectivity to rapidly clean up phenolic compounds is urgently to be a priority. In this work, we have synthesized and characterized 1,3,4-thiadizaole substituted copper and cobalt phthalocyanine 4 and 5 as catalysts on 4-nitrophenol photoxidation. To determine the optimum conditions of 4-NP photoxidation, we have investigated catalyst amount and solvent effect. 2000/1 was detected as suitable substrate/catalyst ratio to give the highest product conversion (90 % for complex 4 and 95 % for complex 5). Dichloromethane, tetrahydofuran, hexane and toluene were tested as different solvent for 4-NP photoxidation and dichloromethane was found the best solvent for both catalysts. The catalytic turnover frequencies of 4 and 5 for photoxidation of 4-NP were determined to be 900 h−1 and 950 h−1, respectively, which were better values than those of the catalysts in our works. Complex 5 maintained conversion (from 95 % to 32 %) after four continuous cycles and the entire catalytic and recovery process could be achieved by separation of two phase reaction mixture.