Visible light - Driven photocatalytic hydrogen production using Cu2O/TiO2composites prepared by facile mechanochemical synthesis

Marica Muscetta, Samar Al Jitan, Giovanni Palmisano, Roberto Andreozzi, Raffaele Marotta, Stefano Cimino, Ilaria Di Somma

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

A visible light - driven photocatalytic hydrogen production system was evaluated for methanol as a sacrificial agent using a Cu2O/TiO2 composite material. A simple ball - milling method was proposed to prepare the Cu2O/TiO2 photocatalyst, focusing on those factors influencing the photocatalytic system through a two-level 3-factorial design approach. The effect of the Cu2O loading and the operating conditions (milling time and rotation rate) for the preparation method were analysed. 1% wt. of Cu2O over TiO2 was identified as the best formulation for the composite catalyst, achieving a maximum hydrogen production of about 1 mmol/g after 5 h of irradiation. The quantum yield and the light to chemical conversion under visible light conditions for the best performing photocatalyst were 1.51% and 0.6%, respectively, which was about 1.5 - fold higher than that obtained in the presence of a simple mixture of the pure starting powders.

Original languageBritish English
Article number107735
JournalJournal of Environmental Chemical Engineering
Volume10
Issue number3
DOIs
StatePublished - Jun 2022

Keywords

  • CuO-TiOcomposite material
  • Hydrogen production
  • P-n heterojunction
  • Photocatalyst preparation
  • Sacrificial photocatalysis

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