JEFFREY CHI-SHENG WU2020-01-062020-01-062010https://scholars.lib.ntu.edu.tw/handle/123456789/445395One 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]SDG7Copper 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 dioxidebook part10.1533/9781845699581.4.4632-s2.0-84903328223https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903328223&doi=10.1533%2f9781845699581.4.463&partnerID=40&md5=fab832c88b1e610a17caeb675139f05e