Hierarchical CdIn2S4microspheres wrapped by mesoporous g-C3N4ultrathin nanosheets with enhanced visible light driven photocatalytic reduction activity.
In this investigation, a series of hierarchical CdIn2S4/g-C3N4nanocomposites were firstly synthesized by a facile one-pot hydrothermal strategy, wherein the mesoporous g-C3N4nanosheets were in-situ self-wrapped onto CdIn2S4nanosheets. Systematic characterization by XRD, FT-IR, UV-vis DRS, SEM, TEM, HAAF-STEM, XPS, photoelectrochemical tests were employed to analyze the phase structure, chemical composition, morphology and photocatalytic mechanism. The application, including photo-redox reaction and photocatalytic water splitting, were used to estimate the photocatalytic activity of as-obtained CdIn2S4/g-C3N4nanocomposites. The results indicate that CdIn2S4/g-C3N4heterostructures exhibit more efficient improvement of the photocatalytic performances towards photo-reduction of 4-NA to corresponding 4-PDA and photocatalytic H2generation from water splitting than these counterparts as results of construction of intimate interfacial contact, which would promote the separation of photo-generated holes and electrons. Meanwhile, benefitting from the excellent surface wrap, the CdIn2S4/g-C3N4nanocomposites possess notable enhanced photocatalytic stability. This research may provide a promising way to fabricate highly efficient photocatalysts with excellent stability and expand the application of CdIn2S4in fine chemical engineering.
Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, China.
Wei
W
Chen
Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, China.
Ting
T
Huang
Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, China.
Yu-Xiang
YX
Hua
Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, China.
Tian-Yu
TY
Liu
Key Laboratory of Education Ministry for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Nanjing 210094, China. Electronic address: xhliu@mail.njust.edu.cn.
Xiao-Heng
XH
Liu
Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC. Electronic address: smchen78@ms15.hinet.net.
Shen-Ming
SM
Chen
4-NA; CdIn(2)S(4); H(2) evolution; Photocatalytic redox; g-C(3)N(4) nanosheets