研究目的
Investigating the photocatalytic decolorization of cobalamin in aqueous suspensions of TiO2 and ZnO under solar irradiation.
研究成果
The study concluded that solar photocatalytic treatment is an efficient technique for decolorization of cobalamin, with complete removal of color achievable in a relatively short time. The degree of photodegradation was affected by parameters such as catalyst mass, type of catalyst, and addition of H2O2. The procedure can be used as an efficient technology for solar photocatalytic degradation of cobalamin under natural weathering conditions.
研究不足
The study was conducted under specific conditions (e.g., light intensity, solution pH, temperature) which may limit the generalizability of the findings. The efficiency of the process may vary under different environmental conditions.
1：Experimental Design and Method Selection:
The study involved photolysis and photocatalysts treatments of aqueous solution of cobalamin over suspensions of titanium dioxide and zinc oxide under natural weathering conditions with solar radiation.
2：Sample Selection and Data Sources:
Aqueous suspensions of titanium dioxide or zinc oxide containing cobalamin were used.
3：List of Experimental Equipment and Materials:
The equipment included a batch photoreactor with Philips (CLEO) mercury lamps, a centrifuge, and a UV-visible spectrophotometer. Materials included TiO2 (DegussaP25) and ZnO.
4：Experimental Procedures and Operational Workflow:
The required amount of catalyst was suspended in 100 cm3 of aqueous solution of cobalamin. After illumination, samples were centrifuged and filtered to remove particles, then absorbance was measured.
5：Data Analysis Methods:
The absorbance at the maximum wavelength of the cobalamin was measured with a UV-visible spectrophotometer at 298.15 K.
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