研究目的
Investigating the fabrication and comparative study of Z-scheme and Type II based heterostructures of NaNbO3/CuInS2/In2S3 for efficient photoelectrochemical applications.
研究成果
The Z-scheme based NaNbO3/CuInS2/In2S3 core/shell heterostructures exhibit superior photoelectrochemical and photocatalytic performance compared to Type II heterostructures, attributed to efficient charge separation and reduced recombination. This work demonstrates the potential of designing heterostructures with specific band alignments for enhanced solar energy conversion applications.
研究不足
The study focuses on the comparison between Z-scheme and Type II heterostructures but does not explore the scalability of the synthesis process or the long-term stability of the heterostructures under operational conditions.
1：Experimental Design and Method Selection:
The study involves the hydrothermal method for synthesizing NaNbO3 nanocubes, CuInS2 nanoparticles, and In2S3 nanoparticles. Core/shell/shell heterostructures were fabricated by sequential deposition of shell materials over the NaNbO3 core.
2：Sample Selection and Data Sources:
Precursors like niobium pentoxide (Nb2O5), sodium hydroxide (NaOH), CTAB, InCl3·4H2O, Cu(Ac)2, sodium sulfide, and indium nitrate were used.
3：List of Experimental Equipment and Materials:
Equipment includes Bruker D8 Advance X-ray diffractometer, FEI QUANTA 3D FEG for FESEM, FEI Technai G2 20 for TEM, Shimadzu UV-2450 spectrometer for UV-Vis absorption studies, and Zennium Electrochemical Workstation for PEC measurements.
4：Experimental Procedures and Operational Workflow:
Detailed procedures for synthesis, characterization, and evaluation of photocatalytic and photoelectrochemical performance are described.
5：Data Analysis Methods:
Data were analyzed using PXRD, FESEM, TEM, UV-Vis absorption, PL spectroscopy, and electrochemical impedance spectroscopy.
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