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Photocatalytic Systems for Carbon Dioxide Conversion to Hydrocarbons

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Part of the book series: Environmental Chemistry for a Sustainable World ((ECSW,volume 40))

Abstract

CO2 emissions are a major contributor to the climate change due to the increase of CO2 concentration in the atmosphere. CO2 represents 70% of greenhouse gas emissions come essentially from human activities during the combustion of fossil resources such as petrol, natural gas, etc. Many initiatives that allow reducing the CO2 concentration are developed. One of the most promising approaches is to convert CO2 into fuels and into valuable chemicals through photocatalysis process. The CO2 photoreduction into hydrocarbon is a promising method to convert CO2 taking advantage of the readily available solar energy. To achieve the goal, it is necessary to develop an efficient photocatalyst and enhance both the CO2 reduction and the efficiency yields. This chapter reviews recent developments, challenges, and novel approaches of CO2 photoconversion for sustainable fuels. These include providing the photocatalytic properties of UV and visible light photocatalysts applied to CO2 reduction, as well as the recent advances in the design of photocatalytic systems. At the same time, doping TiO2 material with various metals or used as heterojunction allows an improvement photocatalytic activity under visible irradiation. Moreover, the effect of the doping can induce unique properties such as extended light absorption range, charge separation, and also an efficient reactivity. The contribution of carbon-based material and porous materials to the enhanced visible light-driven photocatalysis will be included. So, attractive properties make these materials as a good photocatalysts with immense potential in the elaboration of efficient visible light photocatalysts.

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Abbreviations

UV:

ultraviolet

IR:

infrared

CO2:

carbon dioxide

CH4:

methane

N2O:

nitrous oxide

SCs:

semiconductors

Eg:

band gap energy

VB:

valence band

CB:

conduction band

e:

electron

h+:

hole

(e/h+):

electron/hole

TiO2:

titanium dioxide

H2:

hydrogen

H+:

proton

HCOOH:

formic acid

CH3OH:

methanol

CH4:

methane

1D:

one-dimensional

NF:

nanofibers

CH2O:

formaldehyde

C2H6:

ethane

C3H8:

propane

C3H6:

propene

C4H9:

butane

LDHs:

layered double hydroxides

HT:

hydrotalcite

OH:

hydroxy group

G:

graphene

GO:

graphene oxide

rGO:

reduced graphene oxide

g-C3N4:

graphitic carbon nitride

CNT:

carbon nanotubes

CNF:

nanofibers

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Correspondence to Amel Boudjemaa .

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Boudjemaa, A., Cherifi, N. (2020). Photocatalytic Systems for Carbon Dioxide Conversion to Hydrocarbons. In: Inamuddin, Asiri, A., Lichtfouse, E. (eds) Conversion of Carbon Dioxide into Hydrocarbons Vol. 1 Catalysis. Environmental Chemistry for a Sustainable World, vol 40. Springer, Cham. https://doi.org/10.1007/978-3-030-28622-4_4

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