TY - JOUR
T1 - Construction of a ZnIn2S4/Au/CdS Tandem Heterojunction for Highly Efficient CO2Photoreduction
AU - Jiang, Haopeng
AU - Xu, Mengyang
AU - Zhao, Xiaoxue
AU - Wang, Huijie
AU - Liu, Qi
AU - Liu, Zhi
AU - Liu, Qinqin
AU - Yang, Guoyu
AU - Huo, Pengwei
N1 - Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/7/25
Y1 - 2022/7/25
N2 - Photocatalytic CO2reduction technology is of great importance to alleviate energy crisis and environmental pollution; however, it remains a serious challenge due to the fast recombination of carriers. In this study, we report a three-dimensional structure of a ZnIn2S4/Au/CdS composite photocatalyst for the CO2reduction reaction, where Au nanoparticles (NPs) are evenly anchored on the surface of ZnIn2S4by photodeposition and Au NPs are wrapped around by CdS. In ZnIn2S4/Au/CdS composite photocatalysts, Au NPs act as a bridge to construct a "semiconductor-metal-semiconductor" tandem electron transfer mechanism (ZnIn2S4→ Au → CdS) heterojunction, which greatly promotes the transfer of photogenerated electrons. It is worth noting that Au NPs, as a local surface plasmon resonance (LSPR) effect excited source to generate excited-state electrons, further improve the photoreduction CO2activity. Under UV-vis light irradiation, the CO yield of ZnIn2S4/Au/CdS can reach 63.07 μmol·g-1·h-1, which is higher than that of 6.37 μmol·g-1·h-1for pure ZnIn2S4, 0.93 μmol·g-1·h-1for CdS, 8.9 μmol·g-1·h-1for ZnIn2S4/CdS, 31.04 μmol·g-1·h-1for ZnIn2S4/Au, and 5.37 μmol·g-1·h-1for CdS/Au. In addition, the ternary ZnIn2S4/Au/CdS composite photocatalyst has good cyclic stability. This study broadens the idea of designing photocatalysts with good carrier separation efficiency.
AB - Photocatalytic CO2reduction technology is of great importance to alleviate energy crisis and environmental pollution; however, it remains a serious challenge due to the fast recombination of carriers. In this study, we report a three-dimensional structure of a ZnIn2S4/Au/CdS composite photocatalyst for the CO2reduction reaction, where Au nanoparticles (NPs) are evenly anchored on the surface of ZnIn2S4by photodeposition and Au NPs are wrapped around by CdS. In ZnIn2S4/Au/CdS composite photocatalysts, Au NPs act as a bridge to construct a "semiconductor-metal-semiconductor" tandem electron transfer mechanism (ZnIn2S4→ Au → CdS) heterojunction, which greatly promotes the transfer of photogenerated electrons. It is worth noting that Au NPs, as a local surface plasmon resonance (LSPR) effect excited source to generate excited-state electrons, further improve the photoreduction CO2activity. Under UV-vis light irradiation, the CO yield of ZnIn2S4/Au/CdS can reach 63.07 μmol·g-1·h-1, which is higher than that of 6.37 μmol·g-1·h-1for pure ZnIn2S4, 0.93 μmol·g-1·h-1for CdS, 8.9 μmol·g-1·h-1for ZnIn2S4/CdS, 31.04 μmol·g-1·h-1for ZnIn2S4/Au, and 5.37 μmol·g-1·h-1for CdS/Au. In addition, the ternary ZnIn2S4/Au/CdS composite photocatalyst has good cyclic stability. This study broadens the idea of designing photocatalysts with good carrier separation efficiency.
UR - http://www.scopus.com/inward/record.url?scp=85135202854&partnerID=8YFLogxK
U2 - 10.1021/acs.inorgchem.2c01216
DO - 10.1021/acs.inorgchem.2c01216
M3 - Article
C2 - 35834359
AN - SCOPUS:85135202854
SN - 0020-1669
VL - 61
SP - 11207
EP - 11217
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 29
ER -
