Rationally construct of CoSx/MoS2/g-C3N4 double heterojunction with promoting the separation of carriers for enhanced photocatalysis

Wang, Xuefei; Han, Yu; Liu, Yan; Yu, Yanming; Ma, Jun; Yang, Tao; Hu, Jie; Huang, Hao

doi:10.1016/j.ijhydene.2022.10.128

Cited by 15 publications

(1 citation statement)

References 68 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The rational design of multi‐component catalyst systems with cascade electron transfer is highly desirable for electron state regulation and has been widely used in photocatalysis. [ 19 , 20 , 21 , 22 , 23 , 24 ] For instance, Jing et al constructed a novel ternary heterojunction photocatalyst (T‑CN/BVNS), leading to a high selectivity for CO 2 ‐to‐CO conversion through forming an efficient cascaded charge transfer channel. [ 25 ] While the design of ternary catalysts with unidirectional cascaded electron transfer channels remains a significant challenge because the third component may be randomly spatially distributed on the surface of the other two components leading to the formation of multiple independent electron transfer pathways.…”

Section: Introductionmentioning

confidence: 99%

Deep Electronic State Regulation through Unidirectional Cascade Electron Transfer Induced by Dual Junction Boosting Electrocatalysis Performance

Zhang,

Shu,

Zhan

et al. 2023

Advanced Science

View full text Add to dashboard Cite

Unidirectional cascade electron transfer induced by multi‐junctions is essential for deep electronic state regulation of the catalytic active sites, while this advanced concept has rarely been investigated in the field of electrocatalysis. In the present work, a dual junction heterostructure (FePc/L‐R/CN) is designed by anchoring iron phthalocyanine (FePc)/MXene (L‐Ti3C2‐R, R═OH or F) heterojunction on g‐C3N4 nanosheet substrates for electrocatalysis. The unidirectional cascade electron transfer (g‐C3N4 → L‐Ti3C2‐R → FePc) induced by the dual junction of FePc/L‐Ti3C2‐R and L‐Ti3C2‐R/g‐C3N4 makes the Fe center electron‐rich and therefore facilitates the adsorption of O2 in the oxygen reduction reaction (ORR). Moreover, the electron transfer between FePc and MXene is facilitated by the axial Fe─O coordination interaction of Fe with the OH in alkalized MXene nanosheets (L‐Ti3C2‐OH). As a result, FePc/L‐OH/CN exhibits an impressive ORR activity with a half‐wave potential (E1/2) of 0.92 V, which is superior over the catalysts with a single junction and the state‐of‐the‐art Pt/C (E1/2 = 0.85 V). This work provides a broad idea for deep regulation of electronic state by the unidirectional cascade multi‐step charge transfer and can be extended to other proton‐coupled electron transfer processes.

show abstract