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Ultrathin Visible-Light-Driven Mo Incorporating In2O3-ZnIn2Se4 Z-Scheme Nanosheet Photocatalysts

Journal Article · · Advanced Materials
 [1];  [2];  [3];  [2];  [2];  [2];  [2];  [2];  [4];  [3];  [5];  [2]
  1. Peking Univ., Beijing (China); Chinese Academy of Sciences, Taiyuan (China); Chinese Academy of Sciences (CAS), Beijing (China)
  2. Peking Univ., Beijing (China)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Nankai Univ., Tianjin (China)
  5. Chinese Academy of Sciences, Taiyuan (China)

Inspired by natural photosynthesis, the design of new Z-scheme photocatalytic systems is very promising for boosting the photocatalytic performance of H2 production and CO2 reduction, however, till now the direct synthesis of efficient Z-scheme photocatalysts remains a grand challenge. Herein, we demonstrate an interesting Z-scheme photocatalyst can be constructed by coupling In2O3 and ZnIn2Se4 semiconductors based on the theoretical calculations. Experimentally, we make a class of ultrathin In2O3-ZnIn2Se4 (donated as In2O3-ZISe) spontaneous Z-scheme nanosheet photocatalysts for greatly enhancing the photocatalytic H2 production. Furthermore, we incorporate Mo atoms to the Z-scheme In2O3-ZISe nanosheet photocatalyst by forming Mo-Se bond, confirmed by X-Ray photoelectron spectroscopy, in which the formed MoSe2 works as co-catalyst of Z-scheme photocatalyst. As a consequence, such unique structure of In2O3-ZISe-Mo makes it exhibit 21.7 and 232.6 times higher photocatalytic H2 evolution activity than those of In2O3-ZnIn2Se4 nanosheet and In2O3 nanosheets, respectively. And In2O3-ZISe-Mo is also very stable for photocatalytic H2 production by showing almost no activity decay for 16 h test. Here, the ultraviolet-visible diffuse reflectance spectra, photoluminescence spectroscopy, transient photocurrent spectra and electrochemical impedance spectroscopy reveal that the enhanced photocatalytic performance of In2O3-ZISe-Mo is mainly attributed to its widened photoresponse range and effective carrier separation because of its special structure.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0012704
OSTI ID:
1508105
Report Number(s):
BNL--211568-2019-JAAM
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 5 Vol. 31; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Antiperovskite Intermetallic Nanoparticles for Enhanced Oxygen Reduction journal December 2019
Antiperovskite Intermetallic Nanoparticles for Enhanced Oxygen Reduction journal January 2020
Hierarchical Hollow Heterostructures for Photocatalytic CO 2 Reduction and Water Splitting journal October 2019
Mo‐Doped ZnIn 2 S 4 Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution journal December 2019
Unique Cd1−xZnxS@WO3−x and Cd1−xZnxS@WO3−x/CoOx/NiOx Z-scheme photocatalysts for efficient visible-light-induced H2 evolution journal September 2019
Facile fabrication of oxygen and carbon co-doped carbon nitride nanosheets for efficient visible light photocatalytic H 2 evolution and CO 2 reduction journal January 2019
Ta 3 N 5 nanorods encapsulated into 3D hydrangea-like MoS 2 for enhanced photocatalytic hydrogen evolution under visible light irradiation journal January 2019
Hollow In 2 O 3 @ZnFe 2 O 4 heterojunctions for highly efficient photocatalytic degradation of tetracycline under visible light journal January 2019
Ultrafine CoO nanoparticles as an efficient cocatalyst for enhanced photocatalytic hydrogen evolution journal January 2019
Plasmon-promoted electrocatalytic water splitting on metal–semiconductor nanocomposites: the interfacial charge transfer and the real catalytic sites journal January 2019
Self-supporting MOF-derived CoNi@C–Au/TiO 2 nanotube array Z-scheme heterocatalysts for plasmon-enhanced high-efficiency full water splitting journal January 2019
Freestanding ultrathin bismuth-based materials for diversified photocatalytic applications journal January 2019