Table 3.

Summaries of low temperature photocatalytic processes for CH₄ oxidation

Catalyst	T [°C]; P [Pa]	Light	Oxidant	Product [s]	Ref.
V/SiO2, TiO2, P/SiO2	RT	UV, γ	O2	CO2	[ 139 ]
Cu‐doped MoO3	100	UV	O2	MeOH	[ 140 ]
TiO2, TiO2/MoO3, TiO2/MoO3/H4SiW12O40	RT	Solar simulator	O2	CO2, CO	[ 141 ]
TiO2/H4SiW12O40	RT	Solar simulator	O2	CO, CO2, H2O	[ 142 ]
UO2 2+/MCM‐41	RT	Sun	O2	CO2	[ 161 ]
ZnO and Ag/ZnO	RT	300 W Xe lamp	O2	CO2	[ 136 ]
CuO/ZnO	RT	Xe lamp	O2	CO2	[ 143 ]
Cu, La, Pt, Cu/La‐doped WO3	98/10.1 m	UV/visible	H2O	MeOH, H2	[ 144 ]
Beta zeolites	RT	Deep UV	O2	MeOH	[ 145 ]
WO3	RT	Visible laser	H2O2	MeOH, CO2, O2	[ 146 ]
Ag+ impregnated WO3	RT	355 nm laser	H2O	MeOH	[ 147 ]
Mesoporous WO3	55	Hg vapor lamp	H2O	MeOH	[ 148 ]
La‐doped mesoporous WO3	55	UVC–visible	H2O	MeOH	[ 149 ]
MMT‐modified TiO2 a)	100	Hg lamp	CO2	CO, MeOH	[ 150 ]
CuPc‐modified TiO2 b)	RT	Visible light	CO2	CO, AcOH, CH3CHO	[ 151 ]
ZnS–ZnO	RT	UV–visible	CO2	–	[ 152 ]
Co‐doped Al2O3/Co nanoparticles	RT	UV–visible–IR	CO2	CO, H2	[ 153 ]
Photochemical oxidation	<100	20 W low pressure Hg lamp	Water vapor	MeOH, AcOH, HCOOH, EtOH, acetone	[ 76 ]
Ru single atoms on Cu nanoparticles	RT	19.2 W cm−2 white light illuminator	CO2	CO and H2	[ 92 ]
ZnO/La0.8Sr0.2CoO3	RT	Solar light	O2	CO2 and H2O	[ 154 ]
FeOOH/m‐WO3	RT	Visible light	H2O2	MeOH	[ 155 ]
Cocatalyst (Pt, Pd, Au or Ag)/ZnO	RT	Solar light	O2	MeOH and HCHO	[ 156 ]
Rh/SrTiO3 c)	RT	UV light	CO2	CO and H2	[ 157 ]
BiVO4 microcrystals	65	350 W Xe lamp	H2O	MeOH	[ 22 ]
0.33 metal wt% FeOx/TiO2	25	300 W Xe lamp	H2O2	MeOH	[ 158 ]

^a)Montmorillonite;

^b)Phthalocyanine;

^c)Although the experiment was carried out at RT, the temperature of the catalyst reached to 300 °C, we mentioned this work as the temperature was generated from the irradiation, i.e., not applied from outside.