Modified TiO2 photocatalyst for CO2 photocatalytic reduction: An overview

Hamidah Abdullah, Md Maksudur Rahman Khan, Huei Ruey Ong, Zahira Yaakob

Research output: Contribution to journalReview article

44 Citations (Scopus)

Abstract

The photocatalytic pathway to reduce carbon dioxide (CO2) to fuel, an artificial photosynthesis process, is a futuristic and ultimate way to combat the energy crisis and CO2 emission issues. The most widely used catalyst for photocatalytic reactions is titanium dioxide (TiO2) due to its availability, chemical stability, low cost and resistant to corrosion. Although TiO2 photocatalyst suffers due to its wide band gap (only can be activated under ultraviolet light irradiation) and high electron-hole recombination rate, it remained as a precursor for the development of visible light responsive materials for CO2 reduction through different modifications, such as doping of metal, nonmetal, semiconductors etc. There is a significant improvement in CO2 conversion using the visible light responsive TiO2 based catalysts. The product distribution due to the photocatalytic reduction of CO2 highly depends on the band gap and band edges of the catalyst. The understanding in the mechanistic pathway of CO2 reduction is very important to design the catalyst for the production of desired product. This present paper provides an overview of research and development of TiO2 based photo-catalysts for CO2 reduction and focuses on the improvement of the photocatalyst based on the band gap engineering, charge transfer and CO2 adsorption. Moreover, the challenges and future prospect in the developing modified TiO2 for photocatalytic reduction of CO2 has also been discussed.

Original languageEnglish
Pages (from-to)15-32
Number of pages18
JournalJournal of CO2 Utilization
Volume22
DOIs
Publication statusPublished - 1 Dec 2017

Fingerprint

Photocatalysts
catalyst
Catalysts
Energy gap
Nonmetals
nonmetal
Photosynthesis
future prospect
Chemical stability
Carbon Dioxide
Titanium dioxide
research and development
recombination
Charge transfer
corrosion
Carbon dioxide
photosynthesis
irradiation
carbon dioxide
Metals

Keywords

  • Carbon dioxide (CO)
  • Photocatalyst
  • Titanium dioxide (TiO)

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Process Chemistry and Technology

Cite this

Modified TiO2 photocatalyst for CO2 photocatalytic reduction : An overview. / Abdullah, Hamidah; Khan, Md Maksudur Rahman; Ong, Huei Ruey; Yaakob, Zahira.

In: Journal of CO2 Utilization, Vol. 22, 01.12.2017, p. 15-32.

Research output: Contribution to journalReview article

Abdullah, Hamidah ; Khan, Md Maksudur Rahman ; Ong, Huei Ruey ; Yaakob, Zahira. / Modified TiO2 photocatalyst for CO2 photocatalytic reduction : An overview. In: Journal of CO2 Utilization. 2017 ; Vol. 22. pp. 15-32.
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