Bimetallic complexes in artificial photosynthesis for hydrogen production: A review

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Abstract

Artificial photosynthesis technology is a solar energy conversion technology that mimics natural photosynthesis mainly for hydrogen production. There are two systems in artificial photosynthesis technology: (i) Homogeneous system that mimics the electron transfer steps of water (via manganese) in natural photosynthesis and (ii) Heterogeneous system, for example, dye-sensitized photoelectrochemical solar cell system. Transition metal complexes are used in these systems to harness light, and the complexes serve as catalysts as well as the reaction center. Various efforts have been made to increase the efficiency of both systems. Currently, homo- and heterobimetallic complexes are among the molecules that have been investigated. Intramolecular energy transfer in the bimetallic complexes is predicted to improve the lifetime of interfacial charge and power output of solar cells. This review summarizes bimetallic molecules that have been investigated for use in artificial photosynthesis, including the mechanisms of electron and energy transfer as well as the function and role of each component in the bimetallic molecules.

Original languageEnglish
Pages (from-to)3066-3087
Number of pages22
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number4
DOIs
Publication statusPublished - Feb 2012

Fingerprint

photosynthesis
Photosynthesis
hydrogen production
Hydrogen production
Energy transfer
Molecules
Solar cells
electron transfer
solar cells
energy transfer
harnesses
molecules
solar energy conversion
Electrons
Metal complexes
Energy conversion
Solar energy
Manganese
Transition metals
manganese

Keywords

  • Artificial photosynthesis
  • Bimetallic complex
  • Electron transfer
  • Energy transfer
  • Photosensitizer

ASJC Scopus subject areas

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

Cite this

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AU - Kassim, Mohammad

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AB - Artificial photosynthesis technology is a solar energy conversion technology that mimics natural photosynthesis mainly for hydrogen production. There are two systems in artificial photosynthesis technology: (i) Homogeneous system that mimics the electron transfer steps of water (via manganese) in natural photosynthesis and (ii) Heterogeneous system, for example, dye-sensitized photoelectrochemical solar cell system. Transition metal complexes are used in these systems to harness light, and the complexes serve as catalysts as well as the reaction center. Various efforts have been made to increase the efficiency of both systems. Currently, homo- and heterobimetallic complexes are among the molecules that have been investigated. Intramolecular energy transfer in the bimetallic complexes is predicted to improve the lifetime of interfacial charge and power output of solar cells. This review summarizes bimetallic molecules that have been investigated for use in artificial photosynthesis, including the mechanisms of electron and energy transfer as well as the function and role of each component in the bimetallic molecules.

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