2D/2D BiVO4/CsPbBr3 S-scheme heterojunction for photocatalytic CO2 reduction: Insights into structure regulation and Fermi level modulation

Highly Strained Bi‐MOF on Bismuth Oxyhalide Support with Tailored Intermediate Adsorption/Desorption Capability for Robust CO2 Photoreduction

“…To further uncover the mechanism of photocatalytic CO 2 reduction, the interacted intermediates in the reduction process were dynamically tracked within two‐hour constant light irradiation. As shown in Figure S11, the distinctly decreased trends could be observed for both the CO 2 absorption bands at the range of 3589–3752 cm −1 and H 2 O molecule at 3533 cm −1 , indicating the indispensable necessity of H 2 O in photocatalytic CO 2 reduction [38] . Besides, the decreased COO peak at 2945 cm −1 and the simultaneous appearance of the new COOH peak at 1634 cm −1 demonstrate the efficient hydrogenation pathway from CO 2 to COOH* [43, 44] .…”

“…In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was performed to track dynamical evolution of the adsorbed species and intermediates on s‐BiOBr‐mof1 hybrid during the CO 2 photoconversion process [38] . Figure S9 demonstrate the time‐evolved spectra in the dark after the introduction of humid CO 2 , in which the increased intensity of these infrared peaks originated from the absorbed CO 2 molecule could be clearly observed at 2360 and 2337 cm −1 , 3589–3727 cm −1 , corresponding to the surface‐bounded CO 2 molecule and characteristic weak overtone bands [39, 40] .…”

“…As shown in Figure S11, the distinctly decreased trends could be observed for both the CO 2 absorption bands at the range of 3589-3752 cm À 1 and H 2 O molecule at 3533 cm À 1 , indicating the indispensable necessity of H 2 O in photocatalytic CO 2 reduction. [38] Besides, the decreased COO peak at 2945 cm À 1 and the simultaneous appearance of the new COOH peak at 1634 cm À 1 demonstrate the efficient hydrogenation pathway from CO 2 to COOH*. [43,44] Such fast transformation requires fast adsorption and activation process, which could be intuitively reflected by the first recorded curve at 10 minutes.…”

2D/2D Inorganic/Organic Hybrid of Lead-Free Cs2AgBiBr6 Double Perovskite/Covalent Triazine Frameworks with Boosted Charge Separation and Efficient CO2 Photoreduction

“…16,17 In addition, the 2D nanosheets (NSs) usually possess short charge transport distance, large specific surface area, and abundant active sites, all of which contribute to enhanced catalytic activity. 18,19 For instance, 2D/2D heterojunctions of phosphorene/g-C 3 N 4 , 20 MXene/Bi 2 WO 6 , 21 WO 3 /g-C 3 N 4 , 22 CsPbBr 3 /Bi 2 WO 6 , 23 and BiVO 4 /CsPbBr 3 24 have been reported, which demonstrated the unique superiority of 2D/2D heterojunctions in photocatalysis.…”

Heterogeneous In/Mo cooperative bandgap engineering for promoting visible-light-driven CO2 photoreduction

“…Generally, the CO 2 photoreduction reaction mainly includes light absorption, photo-generated electron-hole separation, and photo-excited electron reduction of CO 2 . [19][20][21] Although some excellent semiconductor catalysts, such as g-C 3 N 4 , 22,23 TiO 2 , 24,25 CdS, 26,27 and BiVO 4 , 28,29 have been developed, the poor optical absorption capacity, high recombination rate of photogenerated electron-hole pairs, lack of active sites and low stability are still urgent scientic problems to be solved. In recent years, the advent of single-atom catalysts broke through the bottleneck of the development of traditional heterogeneous photocatalytic systems.…”