A Twin S‐Scheme Artificial Photosynthetic System with Self‐Assembled Heterojunctions Yields Superior Photocatalytic Hydrogen Evolution Rate

Abstract

Scheme 1. Schematic Illustration of a) Z-scheme in natural photosynthesis, b) Z-scheme in an artificial photosynthetic system, c) S-scheme, d) twin S-scheme artificial photosynthetic system before and after contact, and under illumination. e) Schematic diagram of electrostatic self-assembly of material.

Photocatalytic hydrogen production: an overview of new advances in structural tuning strategies

“…12). 144 The photocatalytic hydrogen evolution rate of the catalyst at 365 nm reached 62.37 mmol −1 h −1 , irradiated with a 300 W Xe lamp (200–1000 nm), and the apparent quantum efficiency was up to 45.9%. The remarkable improvement of photocatalytic performance was ascribed to the unique double S-shaped structure, which induced efficient charge separation and transfer.…”

Tuned Band Structure of I‐BiOBr/g‐C3N4 Heterostructure for Enhanced Photocatalytic Performance

“…Among all catalysts, the highest photocurrent response and the smallest semicircle diameter of I-Bi/C 3 N 4 -2 catalyst, further confirm the accelerated charge transportation (Figure 7c,d). [43][44][45][46][47] All the aforementioned results suggest that I-Bi/C 3 N 4 -2 catalyst has an efficient photogenerated carrier' separation and transfer, thus enhancing the photocatalytic performance.…”

Graphene oxide modulated dual S-scheme ultrathin heterojunctions with iron phthalocyanine and phase-mixed bismuth molybdate as wide visible-light catalysts

“…17,18 One of the most promising methods is to construct an S-scheme heterojunction with reduced semiconductors, which not only improves charge separation but also preserves the strong redox ability due to the negative conduction band of the reduced semiconductors. 19–21 Many Bi 2 MoO 6 -based S-scheme heterojunctions like CdS QDs/Bi 2 MoO 6 , 22 Bi 2 S 3 /OV-Bi 2 MoO 6 23 and Bi 2 Sn 2 O 7 /Bi 2 MoO 6 24 have been demonstrated to improve the photocatalytic activities. However, S-scheme heterojunctions composed of different semiconductors usually have mismatched heterogeneous interfaces, resulting in high interfacial charge recombination and thereby greatly reducing the photocatalytic activities.…”