TY - JOUR
T1 - Facile integration of Ni-substituted polyoxometalate catalysts into mesoporous light-responsive metal-organic framework for effective photogeneration of hydrogen
AU - Jiao, Le
AU - Dong, Yuanyuan
AU - Xin, Xing
AU - Qin, Lin
AU - Lv, Hongjin
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/8/15
Y1 - 2021/8/15
N2 - The integration of functional homogeneous polyoxometalate (POM) complexes into highly-dispersed and recyclable heterogeneous catalysts remains a substantially challenging research topic in solar-driven water splitting area. In this work, we report a facile and broad-spectrum impregnation method to construct two POM@MOF composites, Ni3PW10@NU-1000 and Ni3P2W16@NU-1000, by respectively incorporating a tri-Ni-substituted Keggin-type (K6Na[Ni3(H2O)3PW10O39H2O], denoted as K6Na-Ni3PW10) and a Wells-Dawson-type (Na4Li5[Ni3(OH)3(H2O)3P2W16O59], denoted as Na4Li5-Ni3P2W16) polyoxometalate into a mesoporous Zr-based metal-organic framework (NU-1000). Under minimally optimized conditions, the resulting POM@MOF composites can effectively photocatalyze hydrogen production with superior long-term stability and reusability, achieving a hydrogen evolving rate of 3482 and 13051 μmol g−1 h−1 for Ni3PW10@NU-1000 and Ni3P2W16@NU-1000, respectively. Various photophysical and spectroscopic analyses elucidated the possible photocatalytic mechanism and the catalytic difference between two POM@MOF composites.
AB - The integration of functional homogeneous polyoxometalate (POM) complexes into highly-dispersed and recyclable heterogeneous catalysts remains a substantially challenging research topic in solar-driven water splitting area. In this work, we report a facile and broad-spectrum impregnation method to construct two POM@MOF composites, Ni3PW10@NU-1000 and Ni3P2W16@NU-1000, by respectively incorporating a tri-Ni-substituted Keggin-type (K6Na[Ni3(H2O)3PW10O39H2O], denoted as K6Na-Ni3PW10) and a Wells-Dawson-type (Na4Li5[Ni3(OH)3(H2O)3P2W16O59], denoted as Na4Li5-Ni3P2W16) polyoxometalate into a mesoporous Zr-based metal-organic framework (NU-1000). Under minimally optimized conditions, the resulting POM@MOF composites can effectively photocatalyze hydrogen production with superior long-term stability and reusability, achieving a hydrogen evolving rate of 3482 and 13051 μmol g−1 h−1 for Ni3PW10@NU-1000 and Ni3P2W16@NU-1000, respectively. Various photophysical and spectroscopic analyses elucidated the possible photocatalytic mechanism and the catalytic difference between two POM@MOF composites.
KW - POM@MOF composite
KW - Photo-responsive NU-1000 MOF
KW - Photocatalytic hydrogen evolution
KW - Polyoxometalates
UR - http://www.scopus.com/inward/record.url?scp=85102137031&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2021.120091
DO - 10.1016/j.apcatb.2021.120091
M3 - Article
AN - SCOPUS:85102137031
SN - 0926-3373
VL - 291
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 120091
ER -
