Metal-free four-in-one modification of g-C3N4 for superior photocatalytic CO2 reduction and H2 evolution

Selective CO2-to-CO photoreduction over an orthophosphate semiconductor via the direct Z-scheme heterojunction of Ag3PO4 quantum dots decorated on SnS2 nanosheets

“…Moreover, the broad peaks in the region from 3000 to 4000 cm −1 are assigned to the O–H or N–H stretching. 6,52 (iii) Case Ag 3 PO 4 /SnS 2 : it shows the same characteristic peaks of the Ag 3 PO 4 and SnS 2 . However, the intensities of the CH 2 bending and CO ester peaks are significantly decreased, suggesting that adventitious carbon-based species were eliminated during the surface ion-exchange process.…”

“…, CO 2 + H 2 O vapor condition, under irradiation using a Thermo Nicolet 6700 FTIR spectrometer with a HgCdTe detector. 6,19 The three-window DRIFT cell allowed gas purging through the sample and light irradiation (100 W halogen lamp). The spectral resolution of the DRIFTS study was 4 cm −1 , and the time resolution was 30 s. The DRIFT sample contained 4 mg (2 wt%) of studied materials mixed with dry potassium bromide (KBr).…”

“…1 Artificial photosynthesis has been proposed as an effective and green method to address this issue, albeit by mimicking natural biochemical reactions. 2,3 Accordingly, several strategies such as photochemical (PC), 4–9 photoelectrochemical (PEC), 10–13 and electrochemical (EC) 14–16 zero-carbon methods have been proposed to directly transform solar energy into chemical energy. Among these strategies, the PC CO 2 reduction as an autonomous (or wireless) method is attractive because the CO 2 reduction reaction does neither need a sacrificial agent nor external electricity.…”

Highly Selective Photocatalytic Reduction of CO2 to CO Over Ru‐Modified Bi2MoO6

“…Due to high chemical stability of the CO bond in CO 2 , the conversion of CO 2 involves multiple charge transfer processes and various intermediate active products, leading to complicated reaction kinetics, and competing reactions with water cleavage reduce selectivity of products. [ 4–7 ] Despite many semiconductor materials, such as TiO 2 , [ 8 ] CdS, [ 9 ] ZnO, [ 10 ] and g‐C 3 N 4 , [ 11 ] have been widely explored for photocatalytic CO 2 reduction. However, it suffers from poor efficiency due to the high recombination of photogenerated charge carriers along with the low visible‐light responsivity.…”

An ultrathin amorphous defective co-doped hematite passivation layer derived via an in situ electrochemical method for durable photoelectrochemical water oxidation

“…Using solar irradiation as a clean energy source over concentrated solar power systems, photovoltaic solar panels, photocatalytic CO 2 reduction, photoelectrochemical (PEC) CO 2 reduction, and PEC water splitting can be a sustainable method for zero-carbon energy production. 3–10 Fundamentally, a PEC cell requires low-overpotential water reduction, oxidation, and efficient separation of O 2 /H 2 products by the photocathode, photoanode, and membrane, respectively. 11–13 Anyway, studying photoanode materials has attracted the attention of many researchers due to the higher overpotential of the water oxidation process as the rate-determining step of water splitting.…”