TY - JOUR
T1 - Sea-urchin-like ReS2 nanosheets with charge edge-collection effect as a novel cocatalyst for high-efficiency photocatalytic H2 evolution
AU - Lin, Bo
AU - Ma, Bowen
AU - Chen, Jiangang
AU - Zhou, Yao
AU - Zhou, Jiadong
AU - Yan, Xiaoqing
AU - Xue, Chao
AU - Luo, Xiao
AU - Liu, Qing
AU - Wang, Jinyong
AU - Bian, Renji
AU - Yang, Guidong
AU - Liu, Fucai
N1 - Publisher Copyright:
© 2021
PY - 2022/2
Y1 - 2022/2
N2 - The recombination of charge carriers arriving from the random charge movement in semiconductor photocatalysts greatly limits the practical application of solar-driven H2 evolution. The design of photocatalytic systems with spatially oriented charge-transfer is a promising route to achieve high charge-separation efficiency for photocatalysts. Herein, novel sea-urchin-like ReS2 nanosheet/TiO2 nanoparticle heterojunctions (SURTHs) are constructed. The unique sea-urchin-like structure endows the ReS2 cocatalyst with an unusual charge edge-collection effect, which leads to a significant acceleration of charge separation and transfer, as evidenced by the well-designed selective photodeposition of Pt quantum dots in SURTHs. The markedly improved charge transfer capacity contributes to a high photocatalytic H2 evolution rate of 3.71 mmol h−1 g−1 for SURTHs (an apparent quantum efficiency (AQE) of 16.09%), up to 231.9 times by contrast with that of P25 TiO2. This work would provide a new platform for designing the high-efficiency cocatalyst/photocatalyst system with excellent charge transfer capacity.
AB - The recombination of charge carriers arriving from the random charge movement in semiconductor photocatalysts greatly limits the practical application of solar-driven H2 evolution. The design of photocatalytic systems with spatially oriented charge-transfer is a promising route to achieve high charge-separation efficiency for photocatalysts. Herein, novel sea-urchin-like ReS2 nanosheet/TiO2 nanoparticle heterojunctions (SURTHs) are constructed. The unique sea-urchin-like structure endows the ReS2 cocatalyst with an unusual charge edge-collection effect, which leads to a significant acceleration of charge separation and transfer, as evidenced by the well-designed selective photodeposition of Pt quantum dots in SURTHs. The markedly improved charge transfer capacity contributes to a high photocatalytic H2 evolution rate of 3.71 mmol h−1 g−1 for SURTHs (an apparent quantum efficiency (AQE) of 16.09%), up to 231.9 times by contrast with that of P25 TiO2. This work would provide a new platform for designing the high-efficiency cocatalyst/photocatalyst system with excellent charge transfer capacity.
KW - 2D planar edges/tips
KW - Charge edge-collection effect
KW - Charge transfer
KW - Photocatalytic H evolution
KW - Sea-urchin-like ReS nanosheets
UR - http://www.scopus.com/inward/record.url?scp=85113869793&partnerID=8YFLogxK
U2 - 10.1016/j.cclet.2021.07.015
DO - 10.1016/j.cclet.2021.07.015
M3 - Article
AN - SCOPUS:85113869793
SN - 1001-8417
VL - 33
SP - 943
EP - 947
JO - Chinese Chemical Letters
JF - Chinese Chemical Letters
IS - 2
ER -