Photocatalytic reduction of carbon dioxide (CO2)
Journal
Capture and Storage Technology
Journal Volume
2
Pages
463-501
Date Issued
2010
Author(s)
Abstract
One of the best means of solving the carbon dioxide (CO2) problem is to photocatalytically convert the CO2 to hydrocarbons using solar energy, a process which simultaneously generates renewable energy. This chapter discusses the photocatalytic reduction of CO2 using either artificial light or sunlight and presents the fundamental mechanism of CO2 photoreduction. An optical- fiber reactor has been designed that transmits and spreads light uniformly inside the reactor. Methanol is the main product from Cu- or Ag-loaded TiO2, and methane and ethylene are produced from Cu-Fe- loaded TiO2-SiO2 photocatalysts. The photoactivity of dye-sensitized TiO2 is significantly enhanced because the dye can harvest full sunlight. The transformation of solar to chemical energy via CO2 conversion is similar to photosynthesis. © 2010 Woodhead Publishing Limited All rights reserved.
SDGs
Other Subjects
Copper compounds; Ethylene; Iron compounds; Optical fibers; Oxide minerals; Silica; Solar energy; Titanium dioxide; Artificial light; Chemical energy; Fundamental mechanisms; Optical fiber reactor; Photo-reduction; Photocatalytic reduction; Renewable energies; Titania; Carbon dioxide
Type
book part