Construction of S-scheme 0D/2D heterostructures for enhanced visible-light-driven CO2 reduction

Point‐to‐face contact heterojunctions: Interfacial design of 0D nanomaterials on 2D g‐C3N4 towards photocatalytic energy applications

“…This phenomenon followed the charge-transfer route of the direct Z-scheme, where the Type II mechanism led to a reduction site at the CB of FeWO 4 ; meanwhile, in the indirect Z-scheme, FeWO 4 acted as an electron donor by donating electrons from its CB to the VB of g-C 3 N 4 to inhibit charge recombination in g-C 3 N 4 to promote CO 2 RR. Meanwhile, Gong et al 42 recently proposed 0D/2D InVO 4 / g-C 3 N 4 with an S-scheme charge-transfer mechanism, which led to high selectivity of CO 2 to CO with exceptional performance (69.8 μmol h −1 g −1 ) and photostability (>40 h). From the DFT results, it is clear that the 0D/2D InVO 4 /CN heterostructure improved the CO 2 adsorption and activation as it had a relatively lower free energy (0.46 eV) than pure g-C 3 N 4 (0.30 eV) to suppress COOH* intermediates, hence enabling effective CO desorption as the main product (Figure 22G).…”

“…(A) The number of publications and (B) number of citations on g‐C 3 N 4 within the last 10 years, obtained from the Web of Science search engine with the topic keywords “g‐C 3 N 4 ” and “g‐C 3 N 4 + photocataly*” on May 3, 2022. (C) Timeline of 0D/2D g‐C 3 N 4 ‐based photocatalysts from 2012 to the present year: 2012 (Polymeric gCN—Reproduced with permission: Copyright 2011, Wiley 25 ; gCN nanosheet—Reproduced with permission: Copyright 2012, Wiley 26 ), 2013 (2D/2D/2D NRGO/MoS 2 /gCN—Reproduced with permission: Copyright 2013, Wiley 27 ), 2014 (0D/2D Ag 3 VO 4 /gCN—Reproduced with permission: Copyright 2013, Elsevier 28 ; 0D/2D Cu 2 O/gCN—Reproduced with permission: Copyright 2014, Elsevier 29 ), 2015 (0D/2D ZnGeO 4 /gCN; 0D/2D/2D AgBr/NG/gCN—Reproduced with permission: Copyright 2015, Wiley 30,31 ), 2016 (0D/0D/2D SnO 2 /Au/gCN—Reproduced with permission: Copyright 2016, Wiley 32 ), 2017 (Tri‐s‐triazine‐based crystalline gCN—Reproduced with permission: Copyright 2017, Wiley 33 ), 2018 (0D/2D BPQDs/gCN—Reproduced with permission: Copyright 2018, Elsevier 34 ; 0D/2D Co 3 O 4 /gCN—Reproduced with permission: Copyright 2018, Wiley 35 ; 0D/2D/2D Au/MoO x /gCN—Reproduced with permission: Copyright 2017, Wiley 36 ), 2019 (Ag/UCN—Reproduced with permission: Copyright 2019, Wiley 37 ; Hematite/gCN—Reproduced with permission: Copyright 2019, Wiley 38 ), 2020 (0D/2D/2D NbS 2 /Nb 2 O 5 /gCN—Reproduced with permission: Copyright 2020, Wiley 39 ; S‐scheme 0D/2D CeO 2 /gCN—Reproduced with permission: Copyright 2020, Wiley 40 ), 2021 (large scale UCN synthesis—Reproduced with permission: Copyright 2020, Elsevier 41 ; S‐scheme 0D/2D InVO 4 /gCN—Reproduced with permission: Copyright 2021, Elsevier 42 ). …”

Tandem ZnCo-porphyrin metal–organic frameworks for enhanced photoreduction of CO2

“…7 Unfortunately, the photoreduction of CO 2 is extremely difficult due to its high CvO dissociation energy (∼750 kJ mol −1 ). 8 The photocatalytic efficiency is still far from satisfactory due to confined active sites and fast recombination of the photogenerated electron-hole pairs and so on. 9 Metal-organic frameworks (MOFs), constructed via metal ions/clusters and organic structures, have emerged as some of the attractive catalytic materials in artificial photosynthesis in recent years.…”

“…7 Unfortunately, the photoreduction of CO 2 is extremely difficult due to its high CO dissociation energy (∼750 kJ mol −1 ). 8 The photocatalytic efficiency is still far from satisfactory due to confined active sites and fast recombination of the photogenerated electron–hole pairs and so on. 9…”

PtS quantum dots/Nb2O5 nanosheets with accelerated charge transfer for boosting photocatalytic H2 production

“…This structure can endow cocatalysts with high atomic utilization, numerous electron accumulation sites, and plenty of active surfaces and sites, which are extremely beneficial for photocatalytic hydrogen production. [30][31][32][33] Until now, many quantum-dot-structured cocatalysts containing sulfide QDs have been developed for photocatalytic hydrogen generation. Notably, the cocatalyst of PtS QDs is unusual among common cocatalysts of sulfide QDs, which is due to its highly active sites of Pt for hydrogen evolution.…”