Zinc phthalocyanine sensitized g-C3N4 photocatalyst for exceptional photocatalytic hydrogen evolution and pollutant degradation

Syed Ul Hasnain Bakhtiar, Amir Zada, Fazal Raziq, Sharafat Ali, Muhammad Ishaq Ali Shah, Muhammad Ateeq, Muhammad Khan, Dang Alei, Perveen Fazil, Mohammad Naeem, Waliullah Khan, Javed Ali Khan, Ruqia Nazir, Wen Dong, Qiuyun Fu

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Here in this manuscript, the high charge conductivity and exceptionally wide range soalr light absorption of metal phthalocyanines were followed for boosted photocatalysis. Graphitic carbon nitride, g-C3N4 (CN) was thermally prepared from melamine and loaded with appropriate amount of zinc phthalocyanine (ZnPc) to form ZPCN nanocomposites. The fabricated samples were used to liberate hydrogen from water and decompose 2,4-dichlorphenol (2,4-DCP) pollutant under visible-light irradiation. The optimized nanocomposite (0.5ZPCN) purchased highly accelerated photocatalysis and liberated 90 μmol H2 in 1 h in the presence of methanol as sacrificial agent. The same nanocomposite also showed 85% decomposition efficiency for the degradation of 2,4-DCP pollutant. These enhanced catalytic activity of g-C3N4 functionalized with ZnPc are attributed to the exceptional visible light absorption and effective generation of super oxide ions and holes formed after charge transfer between g-C3N4 and ZnPc as confirmed from photoluminescence, fluorescent and electrochemical characterization of the nanophotocatalysts. The charge/radical trapping experiments confirmed that super oxide anions were the main oxidizing agents in the decomposition of 2,4-DCP.
Original languageEnglish (US)
Pages (from-to)16320-16329
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume48
Issue number43
DOIs
StatePublished - May 19 2023
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Condensed Matter Physics
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

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