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Photocatalysis for removal of environmental pollutants and fuel production: a review

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Abstract

Water pollution and fossil fuels are major issues in the context of climate change. Photocatalysis research is rising to develop green technologies for the remediation of pollutants and for energy production. Photocatalysis converts the light energy as photons into chemical energy using semiconducting materials. Different methods are utilised to synthesise these photocatalytic materials. Metal and coupled metal frameworks are applied for the production of photocatalytic materials. Here we review the synthesis and applications of photocatalysts for environmental decontamination and for production of biodiesel, methanol and hydrogen. Pollutants include dyes, pesticides, herbicides, phenols and antibiotics.

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Abbreviations

3D Fe2O3 :

Three-dimensional ferric oxide

As(V):

Arsenate

Cr(VI):

Hexavalent chromium

Na2HAsO4·7H2O:

Disodium hydrogen arsenate heptahydrate

K2Cr2O7 :

Potassium dichromate

PAEC:

Plasma atomic emission spectroscopy

Fe2O3 :

Ferric oxide

TiO2 :

Titanium dioxide

ZnO:

Zinc oxide

CuCo2S4 :

Copper cobalt sulphide

MoSe2/BiVo4 :

Molybdenum diselenide/bismuth vanadate

Bi(NO3)3.H2O:

Bismuth(III) nitrate monohydrate

NH4VO3 :

Ammonium metavanadate

CO2 :

Carbon dioxide

Cu2+ :

Copper(II) ion

Zn2+ :

Zinc(II) ion

Ni2+ :

Nickel(II) ion

Pb2+ :

Lead(II) ion

Cu(NO3)·3H2O:

Copper(II) nitrate trihydrate

Zn(NO3)2·6H2O:

Zinc nitrate hexahydrate

Ni(NO3)2·6H2O:

Nickel(II) nitrate hexahydrate

Pb(NO3)2 :

Lead(II) nitrate

pH:

Potential of hydrogen

HNO3 :

Nitric acid

Rh–Sb TiO2 :

Rhodium and antimony co-doped titanium dioxide

RS-TONR/TNT:

Rhodium/antimony co-doped titanium oxide nanorod and titanate nanotube

Cr(III):

Trivalent chromium

Bi(NO3)3 :

Bismuth(III) nitrate

Na2WO4 :

Sodium tungstate

AgIn5S8 :

Silver indium sulphide

Bi2WO6 :

Bismuth tungstate

FeS2 :

Iron disulphide

BiOCl–Ag–AgBr:

Bismuth oxychloride silver bromide

BiOCl:

Bismuth oxychloride

NaFeS2 :

Sodium iron disulphide

NaNO3 :

Sodium nitrate

TiO2 QD:

Titanium oxide quantum dots

Cu2O NPs:

Copper oxide nanoparticles

Cu2O:

Cuprous oxide

Cu(NO3):

Copper(I) nitrate

TiO2/MoS2 :

Titanium oxide molybdenum sulphide

TiCl4 :

Titanium tetrachloride

MoS2 :

Molybdenum sulphide

Sm@POA–TP:

Samarium codoped poly o-anisidine titanium phosphate

POA–TP:

Poly o-anisidine titanium phosphate

H2O2 :

Hydrogen peroxide

ZnS:

Zinc sulphide

CTAB:

Cetyl trimethyl ammonium bromide

NH3OH:

Ammonium hydroxide

MCM-41:

Mobil composition of matter 41

Co(NO3)2·H2O:

Cobaltous nitrate hexahydrate

HPLC:

High pressure liquid chromatography

Co3O4/SF–MCM-41:

Cobalt tetraoxide silica fume Mobile composition of matter 41

TNP–Pd–Fe3O4/GO:

Titanium nanoplate palladium-doped ferric oxide graphene oxide

Fe3O4 :

Ferrosoferric oxide

SO4 2− :

Sulphate

PO4 3− :

Phosphate

Pt/TiO2 :

Platinum-doped titanium dioxide

2,4 DP:

2,4-Dichlorophenoxyacetic acid

Pd–WO3 :

Palladium tungsten oxide

BiOBr/Fe3O4 :

Bismuth oxybromide-doped ferric oxide

Ag@TiO2 :

Silver titanium dioxide

SnO2 :

Tin dioxide

Sb–SnO2 :

Antimony-doped tin dioxide

Ag3PO4-BiOCl1−xBrx :

Trisilver phosphate-doped bismuth oxychloride bromide

CM-n-TiO2 :

Carbon-modified titanium dioxide

Ag/TiO2 :

Silver/Titanium oxide

Ni–CuO:

Nickel-doped copper oxide

Cu·Cr2O4 :

Copper chromite

NiCuO:

Nickel-doped copper oxide

NiCrO:

Nickel-doped chromium oxide

CuCrO:

Copper-doped chromium oxide

IO K-CN:

Hypoiodite potassium-doped carbon nitride

IO CN:

Hypoiodite-doped carbon nitride

N,S-CQD:

N,S-doped carbon quantum dot

ZnO/N,S-CQDs:

Zinc oxide N,S-doped carbon quantum dot

ZnSnO3 :

Zinc stannate

NaOH:

Sodium hydroxide

ZnSn(OH)6 :

Tin zinc hydroxide

Ag2O/Bi12GeO20 :

Silver oxide-doped bismuth germanium oxide

AgNO3 :

Silver nitrate

FeOOH:

Ferric hydroxide oxide

CoPc–COOH:

Cobalt phthalocyanine tetracarboxylic acid

g-C3N4 :

Graphitic carbon nitride

CdIn2S4 :

Cadmium indium sulphide

CdInS4/mpg-C3N4 :

Cadmium indium sulphide-doped mesoporous graphitic carbon nitride

RGO:

Reduced graphene oxide

NiO–TiO2 :

Nickel oxide-doped titanium dioxide

PyCOOH:

Pyrene-1-carboxylic acid

CaO/TiO2 :

Calcium oxide-titanium dioxide

ZnO/SiO2 :

Zinc oxide-doped silicon dioxide

Cr/SiO2 :

Chromium-doped silicon dioxide

TiCl2 :

Titanium chloride

GCMS:

Gas chromatography mass spectrometry

CZTS:

Copper zinc tin sulphide

CNT–Pt/TiO2 :

Carbon nanotube platinum-doped titanium dioxide

ZnFe2O4 :

Zinc ferrite

JNHP:

Janus nanofibre heterojunction photocatalyst

ZnAl-LDH:

Zinc aluminium-layered double hydroxide

Ni3B/Ni (OH)2 :

Nickel boride nickel hydroxide

Y3Al5O12@Nb2O5/In2O3 :

Yttrium aluminium oxide-doped niobium pentoxide indium(III) oxide

Au/TiO2 :

Gold-doped titanium dioxide

Cl-Ta2O5-x:

Chlorine doping tantalum oxide

MoO3@MoS2/TiO2 :

Molybdenum trioxide-coated molybdenum disulphide-doped titanium dioxide

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Correspondence to Ponnusamy Senthil Kumar.

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Saravanan, A., Kumar, P.S., Vo, DV.N. et al. Photocatalysis for removal of environmental pollutants and fuel production: a review. Environ Chem Lett 19, 441–463 (2021). https://doi.org/10.1007/s10311-020-01077-8

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