研究目的
Investigating the high ammonia sensitive ability of novel Cu12Sb4S13 quantum dots@reduced graphene oxide nanosheet composites at room temperature.
研究成果
Cu12Sb4S13 quantum dots@rGO nanosheet composites exhibit enhanced NH3 gas response at room temperature with a low detection limit of 1 ppm and excellent stability under humidity variations. The composites show high selectivity towards ammonia and potential for practical ammonia detection applications.
研究不足
The study focuses on the gas sensing performance at room temperature and under specific humidity conditions. The practical application under varying environmental conditions and long-term stability beyond 30 days are not extensively explored.
1：Experimental Design and Method Selection:
The study involves the synthesis of rGO nanosheet using the Hummer’s method and preparation of Cu12Sb4S13 quantum dots@rGO composites by solvent thermal method.
2：Sample Selection and Data Sources:
The samples include Cu12Sb4S13 quantum dots@rGO composites, pure Cu12Sb4S13 quantum dots, and rGO nanosheet.
3：List of Experimental Equipment and Materials:
Equipment includes X-ray diffractometer, Raman spectroscopy, FESEM, HRTEM, DRIFT, and BET surface area analyzer. Materials include Oleylamine, Diphenyl ether, N, N-Diphenylthiourea, Antimony trichloride, and Cuprous iodide.
4：Experimental Procedures and Operational Workflow:
The sensor devices were fabricated on ceramic tube, and gas sensing measurements were conducted in a static mode.
5：Data Analysis Methods:
The gas response was defined as Rg/Ra, and response and recovery times were recorded.
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