研究目的
Investigating the synthesis, structural, and optical properties of nanostructured copper sulfide (CuS) semiconductor through mechanochemical synthesis in an industrial mill.
研究成果
The study successfully demonstrated a simple, fast, and convenient one-step mechanochemical synthesis of nanostructured CuS in an industrial mill. The product exhibited hexagonal crystal structure, thermal stability up to 180°C, and an optical band gap of 1.80 eV. The method is suitable for commercial production due to its ecological and advantageous technological process.
研究不足
The study is limited by the agglomeration of nanoparticles affecting the optical properties and the need for further optimization of the synthesis process for commercial production.
1：Experimental Design and Method Selection:
Mechanochemical synthesis of CuS was performed by milling copper and sulfur powders in an industrial eccentric vibratory mill. The kinetics of the synthesis and the influence of Cu powder precursor types were studied.
2：Sample Selection and Data Sources:
Two types of Cu powder precursors (Cua and Cue) and sulfur powder were used. The products were characterized by XRD, specific surface area measurements, particle size distribution, SEM, EDX, TG/DTG, DTA, UV-Vis, and PL spectroscopy.
3：List of Experimental Equipment and Materials:
Industrial eccentric vibratory mill ESM 656–0.5 ks, D8 Advance diffractometer, Gemini 2360 sorption apparatus, Helos/KR&Quixel particle size analyzer, MIRA3 FE-SEM microscope, STA 449 F3 Jupiter, UV-Vis spectrophotometer Helios Gamma, photon counting spectrofluorometer PC
4：5 ks, D8 Advance diffractometer, Gemini 2360 sorption apparatus, Helos/KR&Quixel particle size analyzer, MIRA3 FE-SEM microscope, STA 449 F3 Jupiter, UV-Vis spectrophotometer Helios Gamma, photon counting spectrofluorometer PCExperimental Procedures and Operational Workflow:
1. 4. Experimental Procedures and Operational Workflow: Milling of Cu and S powders under specified conditions, followed by characterization using the mentioned techniques.
5：Data Analysis Methods:
XRD phase analysis using Diffracplus Eva tool, Rietveld analysis with Diffracplus Topas software, specific surface area by BET method, particle size distribution by laser diffraction, thermal stability by TG/DTG-DTA, optical properties by UV-Vis and PL spectroscopy.
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X-ray diffractometer
D8 Advance
Bruker
Used for XRD measurements to confirm the crystal structure of CuS.
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UV-Vis spectrophotometer
Helios Gamma
Thermo Electron Corporation
Used for absorption spectra measurements.
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industrial eccentric vibratory mill
ESM 656–0.5 ks
Siebtechnik
Used for the mechanochemical synthesis of CuS.
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sorption apparatus
Gemini 2360
Micromeritics
Used for specific surface area measurements by the BET method.
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particle size analyzer
Helos/KR&Quixel
Sympatec
Used for measuring particle size distribution.
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scanning electron microscope
MIRA3 FE-SEM
TESCAN
Used for SEM study of CuS morphology.
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thermal analyzer
STA 449 F3 Jupiter
Netzsch
Used for thermal analysis (TG/DTG-DTA) of CuS.
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spectrofluorometer
PC1
ISS
Used for PL spectra measurements.
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