研究目的
To synthesize nanosheet-assembled porous NiO/ZnO microflowers through a facile one-step hydrothermal approach and investigate their gas sensing properties.
研究成果
The nanosheet-assembled porous NiO/ZnO microflowers exhibit enhanced gas sensing performances, attributed to the P-N heterojunction and the unique porous structure. A probable formation mechanism is proposed, highlighting the oriented-attachment and self-assembly processes.
研究不足
The study focuses on the synthesis and gas sensing properties of NiO/ZnO composites but does not explore other potential applications or the scalability of the synthesis method.
1：Experimental Design and Method Selection:
The study employs a one-step hydrothermal method for the synthesis of NiO/ZnO composites.
2：Sample Selection and Data Sources:
The samples are synthesized using Zn(NO3)2·6H2O and Ni(NO3)2·6H2O as precursors, with NH4HCO3 as a precipitant.
3：List of Experimental Equipment and Materials:
Instruments include a Teflon-lined stainless autoclave, X-ray diffractometer (XRD, Rigaku D/Max-1200X), field emission scanning electron microscope (FESEM, Nava 400), and field transmission electron microscopy (FETEM, Libra 200).
4：0). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The synthesis involves mixing precursors, hydrothermal treatment, centrifugation, washing, drying, and calcination.
5：Data Analysis Methods:
The gas sensing properties are evaluated using a CGS-1 intelligent gas sensitivity system.
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