0D/2D CeO2/BiVO4 S-scheme photocatalyst for production of solar fuels from CO2

Nanostructured CeO2 photocatalysts: optimizing surface chemistry, morphology, and visible-light absorption

“…10C). 79 CeO 2 paired with CdWO 4 83 or BiVO 4 84 functions similarly in S-scheme catalysts, with electron transfer from the CB of the higher work function semiconductor to the CeO 2 VB, and electrons from the CeO 2 CB reducing CO 2 . The opposite arrangement is also possible with CeO 2 , where a lower work-function semiconductor performs CO 2 reduction and the balancing reactions (e.g., 2H 2 O → 4H + + O 2 ) will occur at the CeO 2 VB, as demonstrated in the case of CeO 2 /LaTiO 2 N. 85 A more recent work by Zhang et al utilize CeO 2 in this role in an S-scheme photocatalyst, providing evidence of the proposed chargetransport pathway through DFT calculations and in situ XPS measurements.…”

Construction of 2D S‐Scheme Heterojunction Photocatalyst

“…as Bi 2 MO 6 (M = W, Mo), [109][110][111] BiVO 4 , [112,113] Bi 3 NbO 7 , [114] Bi 2 Fe 4 O 9 , [115] Bi 4 Ti 3 O 12 , [87] and Bi m+1 Fe m−3 Ti 3 O 3m+3 (m = 4, 5, 6). [116,117] Bi 2 MO 6 dominates Bi-containing multi-metal oxides because of its facile preparation, suitable band gap, strong oxidation ability, and physicochemical stability.…”

“…They have layered Aurivillius structures in which [Bi 2 O 2 ] 2+ layers are intercalated with metal oxide layers. To date, numerous Bi‐containing multi‐metal oxides are applied to fabricate S‐scheme heterojunctions, such as Bi 2 M O 6 ( M = W, Mo), [ 109–111 ] BiVO 4 , [ 112,113 ] Bi 3 NbO 7 , [ 114 ] Bi 2 Fe 4 O 9 , [ 115 ] Bi 4 Ti 3 O 12 , [ 87 ] and Bi m +1 Fe m −3 Ti 3 O 3 m +3 ( m = 4, 5, 6). [ 116,117 ] Bi 2 MO 6 dominates Bi‐containing multi‐metal oxides because of its facile preparation, suitable band gap, strong oxidation ability, and physicochemical stability.…”

Review on CeO2-Based Photocatalysts for Photocatalytic Reduction of CO2: Progresses and Perspectives

“…The S-scheme heterojunction composition is responsible for the good characteristics, as it efficiently reduces the compounding of photogenerated carriers (Figure 9c, d). The S-scheme heterojunction between 0D/2D CeO 2 /BiVO 4 developed by Geng et al 114 achieved a high yield methanol conversion of CO 2 under visible light. Yet, the entire system is made up of n-type semiconductors, and the CB has a positive band-side potential, both of which help with the reduction of CO 2 and work against the creation of C1 products.…”