Water ozonization treatment method by taking cerium oxide nanomaterial as catalyst
A technology of nanomaterials and ozonated water, applied in the direction of oxidized water/sewage treatment, etc., can solve the problems of large organic wastewater discharge, difficult treatment, complex composition, etc., and achieve improved mineralization, small particle size, and simple operation Effect
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Embodiment 1
[0021] Weigh 4.50g of cerium chloride heptahydrate and dissolve it in 120ml of distilled water. After the solution is evenly mixed, quickly add 12g of solid sodium hydroxide while vigorously stirring. The resulting light purple solution was transferred to a polytetrafluoroethylene-lined reactor, and kept sealed at 130°C for 18 hours; after the reaction was completed, it was naturally cooled to room temperature, the resulting precipitate was washed with deionized water, dried at room temperature, and then calcined at 300°C 4h, to obtain cerium oxide nanomaterials. Its TEM photo is shown in Figure 1(a), and its XRD pattern is shown in figure 2 (a).
Embodiment 2
[0023] Weigh 5.22g of cerium chloride heptahydrate and dissolve it in 120ml of distilled water. After the solution is evenly mixed, quickly add 12g of solid sodium hydroxide while vigorously stirring. The resulting light purple solution was transferred to a polytetrafluoroethylene-lined reactor, and kept sealed at 130°C for 18 hours; after the reaction was completed, it was naturally cooled to room temperature, the resulting precipitate was washed with deionized water, dried at room temperature, and then calcined at 300°C 4h, to obtain cerium oxide nanomaterials. Its TEM photo is shown in Figure 1(b), and its XRD pattern is shown in figure 2 (b).
Embodiment 3
[0025] Weigh 4.50g of cerium chloride heptahydrate and dissolve it in 120ml of distilled water. After the solution is evenly mixed, quickly add 12g of solid sodium hydroxide while vigorously stirring. The obtained light purple solution was transferred to a polytetrafluoroethylene-lined reaction kettle, and kept sealed at 100°C for 18 hours; after the reaction was completed, it was naturally cooled to room temperature, the obtained precipitate was washed with deionized water, dried at room temperature, and then calcined at 300°C 4h, to obtain cerium oxide nanomaterials. Its TEM photo is shown in Figure 1(c), and its XRD pattern is shown in figure 2 (c).
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