Constructing MAX dispersed Ni2P/TiO2 nanocomposite with investigating influential effect of parameters through design expert and kinetic study for photocatalytic H2 evolution

Sehar Tasleem, Muhammad Tahir

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Well-designed Ni2P/TiO2 nanoparticles dispersed over 2D Ti3AlC2 MAX, were investigated for H2 evolution with parameter optimization and kinetic modelling in a liquid phase slurry photoreactor. The highest H2 production rate of 1300 µmol was obtained over MAX dispersed Ni2P/TiO2 nanocomposite. The H2 production was observed to be 3.80 times more than the H2 generated by pristine TiO2, based on the inhibited charge recombination, improved visible light response, and good redox potential of TiO2. The sacrificial reagents, catalyst loading, and reaction time were optimized through the design of experiment (DoE). The results revealed 10.5 CH3OH concentration, 0.11 g loading, and a 3.59 h reaction time as the optimum conditions for maximum H2 generation. Finally, for investigating the adsorption behaviour, a modified Langmuir-Hinshelwood (L-H) mechanism-based kinetic model was developed. According to the kinetic model, the lower CH3OH adsorption constant suggested low adsorption at lower concentrations, but the higher CH3OH value indicated more adsorption at higher reactant concentrations. Thus, structured photocatalysts with enhanced photoactivity and kinetic-model findings should help researchers to comprehend photocatalytic reaction engineering properly for solar energy applications.

Original languageEnglish
Article number104074
JournalAdvanced Powder Technology
Volume34
Issue number7
DOIs
Publication statusPublished - Jul 2023

Keywords

  • Kinetic modelling
  • Optimization
  • Photocatalytic H generation
  • Response surface methodology
  • TiAlC MAX
  • TiO/NiP nanocomposite

ASJC Scopus subject areas

  • General Chemical Engineering
  • Mechanics of Materials

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