TY - JOUR
T1 - Boosting H2 Production over C60-Mediated NH2-MIL-125(Ti)/Zn0.5Cd0.5S S-Scheme Heterojunction via Enhanced Interfacial Carrier Separation
AU - Li, Chunxue
AU - Liu, Xiaoteng
AU - Huo, Pengwei
AU - Yan, Yongsheng
AU - Liao, Guangfu
AU - Ding, Guixiang
AU - Liu, Chunbo
N1 - Funding Information:
The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (21805115, 21576112, and 21606114) and the Open Project Program of Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, China (2019009).
PY - 2021/10/1
Y1 - 2021/10/1
N2 - Improving greatly the separation efficiency of interfacial charge carrier is a major challenge in photocatalysis. Herein, a new class of C60-mediated NH2-MIL-125(Ti)/Zn0.5Cd0.5S S-scheme heterojunction with enhanced interfacial charge carrier separation is designed and synthesized. The constructed S-scheme heterojunction thermodynamically favors photocatalytic H2 evolution because of the large driving force resulting from its strong redox abilities. As a consequence, the optimum proportion of C60-mediated NH2-MIL-125(Ti)/Zn0.5Cd0.5S S-scheme heterojunction displays comparable H2 evolution activity with a rate of 7825.20 µmol h−1 g−1 under visible light irradiation, which is about 93.05 times, 6.38 times and 2.65 times higher than that of 2% C60/NH2-MIL-125(Ti), Zn0.5Cd0.5S and 45% NH2-MIL-125(Ti)/Zn0.5Cd0.5S, and outperforms the majority of the previously reported MOFs-based photocatalysts. Spectroscopic characterizations and theory calculations indicate that the S-scheme heterojunction can powerfully promote the separation of photogenerated carriers. This work offers a new insight for future design and development of highly active MOFs-based photocatalysts.
AB - Improving greatly the separation efficiency of interfacial charge carrier is a major challenge in photocatalysis. Herein, a new class of C60-mediated NH2-MIL-125(Ti)/Zn0.5Cd0.5S S-scheme heterojunction with enhanced interfacial charge carrier separation is designed and synthesized. The constructed S-scheme heterojunction thermodynamically favors photocatalytic H2 evolution because of the large driving force resulting from its strong redox abilities. As a consequence, the optimum proportion of C60-mediated NH2-MIL-125(Ti)/Zn0.5Cd0.5S S-scheme heterojunction displays comparable H2 evolution activity with a rate of 7825.20 µmol h−1 g−1 under visible light irradiation, which is about 93.05 times, 6.38 times and 2.65 times higher than that of 2% C60/NH2-MIL-125(Ti), Zn0.5Cd0.5S and 45% NH2-MIL-125(Ti)/Zn0.5Cd0.5S, and outperforms the majority of the previously reported MOFs-based photocatalysts. Spectroscopic characterizations and theory calculations indicate that the S-scheme heterojunction can powerfully promote the separation of photogenerated carriers. This work offers a new insight for future design and development of highly active MOFs-based photocatalysts.
KW - C -mediated NH -MIL-125(Ti)/Zn Cd S
KW - interfacial charge carrier separation
KW - photocatalytic H evolution
KW - S-scheme heterojunction
KW - strong redox abilities
UR - http://www.scopus.com/inward/record.url?scp=85112774220&partnerID=8YFLogxK
U2 - 10.1002/smll.202102539
DO - 10.1002/smll.202102539
M3 - Article
AN - SCOPUS:85112774220
SN - 1613-6810
VL - 17
JO - Small
JF - Small
IS - 39
M1 - 2102539
ER -
