《Table 1–Reactant concentrations (n) , mean crystallite sizes and the ratios of the intensities of (

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《Enhanced adsorption of arsenate by spinel zinc ferrite nano particles: Effect of zinc content and site occupation》

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The ZnxFe3-xO4（x=0.2，0.4，0.6，0.8 and 1）samples were synthesized using a facile hydrothermal method13.Briefly，Fe（NO3）3·9H2O and Zn（NO3）2·6H2O were dissolved in 50 mL of C2H5OH，and 18 mmol CH3COONa was subsequently added into the mixture.The molar amounts of FeNO3·9H2O and Zn（NO3）2·6H2O are listed in Table 1.After vigorously stirring for about 5 min，the mixture was transferred into a Teflon-lined steel autoclave and thermally treated for 24 hr at 200°C.Then the mixture was naturally cooled down to room temperature The solid products of formula ZnxFe3-xO4were collected by centrifugation and washed with ethanol/deionized water five times.Then the products were dried at 50°C for 24 hr in a vacuum oven.