Photocatalytic reduction of carbon dioxide in alkaline medium on La modified sodium tantalate with different co-catalysts under UV–Visible radiation

Reduction of Carbon Dioxide: Photo-Catalytic Route to Solar Fuels

“…The PCR of CO 2 on La-doped NaTaO 3 with a variety of co-catalysts has been studied by Jeyalakshmi et al [55]. The changes in the positions of conduction band minimum and valence band maximum brought out by loading lanthanum in NaTaO 3 is shown in Fig.…”

Heteroepitaxial barium-doped NaTaO 3 films on SrTiO 3 (001) substrate

“…Typically, hydrothermal [19][20][21][22][23][24][25] and solvothermal [26,27] reactions have been utilized to produce micrometersized undoped NaTaO 3 particles. In addition, NaTaO 3 particles doped with Ca, Sr, and Ba [10], La [28,29], Bi [30,31], V [32], or Cu [33] cations were synthesized under hydrothermal reaction conditions.…”

“…Polycrystalline particles of sodium tantalate (NaTaO 3 ) doped with alkaline-earth metal (e.g., Ba, Sr, or Ca) cations exhibit high quantum efficiencies for this reaction [1][2][3][4] and also the steam reforming reaction of methane [5] when the bandgap is excited by ultraviolet light. The photocatalytic reduction of CO 2 using pristine [6], metal-doped NaTaO 3 [7,8] and also KTaO 3 [9] has been reported. Steady-state [10] and time-resolved [11] infrared absorption studies revealed that the recombination of photoexcited electrons and holes is restricted by the doping of alkaline-earth metals into NaTaO 3 .…”

Highly Active NaTaO3‐Based Photocatalysts for CO2 Reduction to Form CO Using Water as the Electron Donor

“…Therefore, it is expected that the NaTaO 3 :A (A = Mg, Ca, Sr,B a, and La) photocatalysts show high activity for CO 2 reductionu sing water as an electron donor.R ecently,s everal groups reported CO 2 reduction on NaTaO 3 photocatalysts in an aqueous solution. [24][25][26] Small amountso fh ydrocarbons and Doped NaTa O 3 (NaTaO 3 :A,w here A = Mg, Ca, Sr,B a, or La) has arisen as ah ighly active photocatalyst for CO 2 reduction to simultaneously form CO, H 2 ,a nd O 2 using water as the electron donor when used with an Ag cocatalyst, under UV irradiation, and with 1atm (0.1 MPa)o fC O 2 .T he ratio of the number of reactede lectrons/holes was almost unity,i ndicating that water was consumeda st he electrond onor.Al iquid-phaser eduction methodf or loading of the Ag cocatalyst wass uperiort op hotodeposition and impregnationm ethods. The Ag cocatalystloaded NaTaO 3 :Ba wast he most active photocatalyst in water with no required additives.…”