Hydrothermal in situ preparation of phthalocyanine-TiO2 nanocomposites for photocatalytic activity under visible light irradiation

Gördük S., Avcıata O., Avcıata U.

RESEARCH ON CHEMICAL INTERMEDIATES, vol.47, no.2, pp.615-635, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 47 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.1007/s11164-020-04289-3
  • Journal Name: RESEARCH ON CHEMICAL INTERMEDIATES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, Compendex, Environment Index
  • Page Numbers: pp.615-635
  • Keywords: TiO2, Hydrothermal, Photocatalytic activity, Phthalocyanine, Nanocomposite, ORGANIC POLLUTANTS, METHYLENE-BLUE, DEGRADATION, TIO2, DYES, CONTAMINANTS, ZN(II), CO(II), ZN
  • Yıldız Technical University Affiliated: Yes

Abstract

In this study, phthalocyanine (Pc)-TiO2 nanocomposites were prepared via in situ hydrothermal method. The metal-free, zinc(II), cobalt(II), nickel(II) and copper(II) Pc compounds were used for formation of nanocomposites. A total of 5 different Pc-TiO(2)nanocomposites was successfully prepared by hydrothermal method. The prepared nanocomposites were also characterized by FT-IR, XRD, FEG-SEM, EDX, UV-DRS and BET techniques. All prepared nanocomposites were tested for their photocatalytic activity to be used as photocatalyst. For this purpose, photocatalytic activities of Pc-TiO(2)nanocomposites were evaluated for the degradation efficiency of methylene blue (MB) under visible light irradiation by monitoring the UV-Vis absorption spectra. Based on the conducted studies, it was observed that Pc-TiO2 photocatalysts have significant photocatalytic activities on degradation of MB under visible light irradiation, resulting in complete degradation of MB in 100-130 min for full degradation (100%). Furthermore, the reusability studies revealed that photocatalysts show 76% activity even after 5 uses.