The application and improvement of TiO₂ (titanate) based nanomaterials for the photoelectrochemical conversion of CO₂ and N₂ into useful products

Abstract

In this review, we describe the photoelectrochemical (PEC) transformation of atmospheric species such as carbon dioxide (CO2) and nitrogen (N2) into useful industrial products on TiO2 and TiO2 composite photoelectrodes.

Advancing Photoelectrochemical Energy Conversion through Atomic Design of Catalysts

“…Given that many excellent works have given comprehensive review [ 60 , 61 , 62 , 63 ] on the origin of the charge recombination during generation, separation, and transfer processes, and the corresponding strategies to prevent photogenerated charge loss, [ 64 , 65 ] we will briefly introduce the mechanisms of water splitting, NRR, and CRR, which will help understanding how atomic design of photoelectrocatalysts significantly affects the performance of PEC systems. Note that the mechanisms of these catalytic reactions in the PEC system are very similar to those in electrocatalysis, [ 66 , 67 ] which have been deeply investigated. In this review, the widely accepted catalytic mechanism for the specific reactions are introduced.…”

Recent advancement in heterogeneous CO2 reduction processes in aqueous electrolyte

“…However, several significant reviews are also available looking exclusively at PEC CO 2 RR. 32–37 Li et al 38 and Feng et al 39 covered PEC CO 2 RR concisely along with PEC water splitting, while Zheng et al 40 did so along with the nitrogen reduction reaction (NRR). Yang et al 41 made a detailed review of both EC and PEC.…”

Fabrication of p-type silicon nanowire array based photoelectrodes for the efficient photoelectrocatalytic reduction of CO2 to fuels and chemicals

“…Therefore, the photoelectrocatalytic reduction of CO 2 is one of the ideal ways to realize the CO 2 resource utilization, and then achieve the carbon peak and carbon neutral goals as soon as possible. 12,13 Nowadays, many p-type semiconductor materials, such as Cu 2 O, [14][15][16][17][18][19][20][21] Co 3 O 4 , [22][23][24][25][26] NiO, [27][28][29] p-Si, [30][31][32][33][34][35][36][37][38][39][40][41] ZnTe, [42][43][44][45] CuInS 2 , [46][47][48][49][50] GaP [51][52][53] and InP, [54][55][56] have been used for the photoelectrocatalytic reduction of CO 2 . Among these photocathode materials, p-Si has unique properties such as wide absorption, an efficient carrier migration rate and high stability.…”

“…Nowadays, many p-type semiconductor materials, such as Cu 2 O, 14–21 Co 3 O 4 , 22–26 NiO, 27–29 p-Si, 30–41 ZnTe, 42–45 CuInS 2 , 46–50 GaP 51–53 and InP, 54–56 have been used for the photoelectrocatalytic reduction of CO 2 . Among these photocathode materials, p-Si has unique properties such as wide absorption, an efficient carrier migration rate and high stability.…”