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The photocatalytic performances of all the obtained samples weremeasured toward degradation of RhB under Xe light (350 W) irradiationat room temperature, and the degradation of Rhodamine B (RhB) wasobserved based on the absorption spectroscopic technique. Typically,30 mg of the photocatalysts were added to the Rhodamine B solution(10 mg/L) with 0.7 mL H 2 O 2 (≥30 wt%). The reaction mixture wasstirred in the dark for 40 min to achieve the adsorption-desorptionequilibrium between RhB and the photocatalyst, then the solutionwas exposed to the Xe light irradiation under ambient conditions withthe constant stirring. After given time intervals, the mixture solutionwas centrifuged and analyzed by measuring the absorbance of RhB at550 nm. [ 53 ]
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