An in-situ spectroscopic study on the photochemical CO2 reduction on CsPbBr3 perovskite catalysts embedded in a porous copper scaffold

Recent Advances in Electrochemical, Photochemical, and Photoelectrochemical Reduction of CO2 to C2+ Products

“…[160] Additionally, as DFT calculations support the elucidation of the reaction mechanism, in situ and operando characterization methods certainly help investigate the CO 2 reduction mechanism as ex situ analysis is inadequate to demonstrate what intermediates generate during reaction on the surface due to possible contamination of the surface and unintended transformation of materials. In some works covered in this review, what kinds of bonds were present in the intermediates was revealed by in situ infrared spectroscopy (FT-IR, ATR-IR, DRIFTS) and in situ Raman spectroscopy, [83,84,87,[106][107][108]110,112,124,129] and a chemical state of catalyst was monitored with in situ and operando XAS and operando APXPS. [102,108,125] Based on the results from these characterizations, more reliable reaction mechanisms were proposed.…”

“…Choi et al reported a CsPbBr 3 perovskite nanocrystal with a nanoporous scaffold structure consisting of a Cu cocatalyst for CO 2 PCRR. [124] A Cu cocatalyst with a nanoporous scaffold structure offered useful charge transfer channels but also enhanced light absorption due to effective light trapping from multi-scattering relative to the planar structure. Additionally, the 3D structure of Cu increased the specific surface area and decreased the charge transfer resistance at the surface of the photocatalyst.…”

“…The reaction conditions and catalytic performances for the CO 2 to C 2+ products PCRR are summarized in Table 6. [108][109][110][111][112]116,117,[119][120][121][122][123][124]…”

Photocatalytic CO2reduction on Cu single atoms incorporated in ordered macroporous TiO2toward tunable products

“…18 The adsorption bands in the region of 1614-1774 cm −1 are assignable to *CHO, which is an intermediate generated from *HCOOH. 18,71,72 Notably, the infrared signals of the gas-solid catalytic system (Fig. 7a) are much stronger than those of the liquid-solid system (Fig.…”

A Comprehensive Review on Graphitic Carbon Nitride for Carbon Dioxide Photoreduction

“…[15] Therefore, many advanced technologies have been developed that have the capacity to reduce CO 2 concentration in the atmosphere on the one hand and also transform it into other valuable chemicals. [16][17][18][19] These techniques include, but are not limited to, thermal, [15] photoelectrochemical, [20][21][22] electrochemical, [22][23][24] and photochemical, [25][26][27] where light, radiation, heat, or electricity are used to power reactions. Although the thermal method is currently the most popular option in the commercial sector; but, there are significant challenges associated with it, including limited product selectivity, high cost, and complex reactions.…”