Photothermal-coupled solar photocatalytic CO₂reduction with high efficiency and selectivity on a MoO_3−x@ZnIn₂S₄core–shell S-scheme heterojunction

Abstract

Photocatalytic technology to convert CO2 into chemical fuel is one of the most promising ways to alleviate the greenhouse effect. However, due to the low photocatalytic efficiency and poor product...

Photocarrier Dynamics Regulation by Constructing a 2D ZnIn2S4 Nanosheet Array with Highly Exposed Zn Vacancies for Efficient Solar-Driven CO2 Conversion

“…It is evident that the average production rate of 2D V Zn -ZIS reaches 441 μmol g –1 h –1 and exhibits high product selectivity of CO, as proved by Figure S9. In contrast to the recently reported ZIS-based photocatalysts for solar-driven CO 2 conversion, ,,,,− 2D V Zn -ZIS in this work exhibits the most satisfactory solar energy conversion performance with an almost maximal CO production rate (Figure c). Further comparison with other photocatalysts demonstrates the advantage of 2D V Zn -ZIS in gas–solid-phase photocatalytic CO 2 conversion (Table S1).…”

Bi2Fe4O9@ZnIn2S4 S-scheme laminated heterojunction photocatalyst towards optimized photocatalytic performance

“…13,14 Xiong et al prepared a Mo 3− x @ZnIn 2 S 4 photocatalyst for photocatalytic CO 2 reduction. 15 The average CH 4 yield of Mo 3− x @ZnIn 2 S 4 was much higher than that of pristine ZnIn 2 S 4 . With regard to the choice of substrate, Bi 2 Fe 4 O 9 , which also possesses a layered structure, can generate an internal electric field (IEF) to inhibit the recombination of photoinduced electrons and holes.…”

Three-Dimensional Multihierarchical Hexagonal/Cubic ZnIn2S4 S-Scheme Heterophase Junction for Superior Photocatalysis

“…This indicates that the charge transfer between C-ZIS and H-ZIS does not follow the traditional type-II heterojunction. 48 Based on the XPS results in Figure 3, during the compositing of H-ZIS and C-ZIS, which are both n-type semiconductors, the electrons on the C-ZIS side will migrate toward the H-ZIS side. Consequently, as shown in Figure 12g, the combination of H-ZIS and C-ZIS will result in a spontaneous directional charge transfer and collection at their interface, and then the energy band of C-ZIS will bend upward, while that of H-ZIS will bend downward until the Fermi levels of the two phases reach equilibrium.…”