研究目的
To develop an efficient and commercializable photocatalyst for the degradation of azo dyes under visible light irradiation.
研究成果
The ZnS/ZnCr2O4 nanohybrid showed enhanced photocatalytic properties in the photodegradation of azo dye under visible light irradiation, with good recycling capability. The study provides a foundation for developing efficient and commercializable photocatalysts for environmental remediation.
研究不足
The study focuses on the degradation of methyl orange dye under visible light irradiation, and the stability of the nanohybrid was tested for only four cycles.
1：Experimental Design and Method Selection
The samples were prepared by simple precipitation process and characterized to investigate crystallinity, morphology, functional group, photophysical properties, elemental composition and mapping.
2：Sample Selection and Data Sources
Methyl orange (MO) dye was used as a target pollutant to estimate the catalytic performance of the ZnS-ZnCr2O4 nanohybrid photocatalyst.
3：List of Experimental Equipment and Materials
Chemicals used include sodium hydroxide (NaOH), zinc nitrate hexahydrate (Zn(NO3)2·6H2O), methionine (C5H11NO2S), zinc chloride (ZnCl2), chromium (III) Nitrate (Cr(NO3)3), and sodium sulfide (Na2S). Equipment includes XRD, FTIR, FESEM, HRTEM, EDAX, XPS, UV-Vis spectrophotometer, and PL spectrometer.
4：Experimental Procedures and Operational Workflow
The samples were prepared by precipitation, characterized, and their photocatalytic performance was assessed against MO dye under visible light irradiation.
5：Data Analysis Methods
The photocatalytic degradation efficiency was analyzed by measuring the absorption intensity at 460 nm using UV-Vis absorption spectrophotometer.
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