研究目的
Investigating the effects of hydrocarbon tail length of various surfactants used as fuel on the combustion behavior, phase evolution, morphology, optical properties, and photocatalytic activity of ZnO powders synthesized by solution combustion method.
研究成果
The study concluded that the use of surfactants with various lengths of hydrocarbon tail as fuel in solution combustion synthesis affects the properties of ZnO powders. The addition of citric acid as auxiliary fuel increased the specific surface area and pore volume. ZnO powders obtained by mixed fuels showed higher crystallinity and photocatalytic activity, especially those prepared with the longest hydrocarbon tail surfactant.
研究不足
The study focuses on the synthesis and characterization of ZnO powders using solution combustion method with various surfactants as fuel. The limitations include the scope of surfactants used and the specific conditions of the combustion process which may not cover all possible variations in fuel types and combustion conditions.
1：Experimental Design and Method Selection:
The study employed solution combustion synthesis method to produce ZnO powders using various surfactants as fuel. The effects of hydrocarbon tail length on the properties of ZnO were analyzed.
2：Sample Selection and Data Sources:
Zinc nitrate and surfactants (CTAB, DTAB, OTAB) with citric acid as auxiliary fuel were used. The samples were characterized using thermal analysis, X-ray diffraction, electron microscopy, and photoluminescence spectroscopy.
3：List of Experimental Equipment and Materials:
STA B?HR 503 for thermal analysis, PANalytical X-ray diffractometer, TESCAN Vega II for SEM, PHS-1020 for BET analysis, Shimadzu UV-Vis-52550 and Hitachi F-7000 for optical properties.
4：Experimental Procedures and Operational Workflow:
Precursor solutions were prepared, heated to form a gel, and then ignited. The as-combusted powders were characterized for their properties.
5：Data Analysis Methods:
The data were analyzed using Rietveld refinement method for XRD, BET and BJH methods for surface area and pore volume, and Tauc’s plot for band gap energy calculation.
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