A method for preparing ZnO / Ag nanometer composite materials in a
room temperature includes the steps of firstly, placing nanometer
zinc powder in a conical flask, adding dispersion liquid to the conical flask, and evenly mixing the nanometer
zinc powder with the dispersion liquid in a shaking mode; secondly, placing the conical flask in an ultrasonic apparatus to be processed for 6 hours to 10 hours, taking the conical flask out every 15 minutes and shaking the conical flask for 30 seconds; thirdly, preparing milk white ZnO micro
emulsion suspension liquid, and placing the upper portion of the suspension liquid into a
test tube; fourthly, dropwise and evenly adding an AgNO3 solution to the
test tube, evenly mixing the AgNO3 solution with the suspension liquid in the
test tube in a shaking mode until brown-black floccule does not increase any more; fifthly, separating out brown-black
sediment in a centrifugal mode, repeatedly washing the
sediment through deionized water, placing the
sediment into a clean
reagent bottle, and adding absolute ethyl
alcohol to the
reagent bottle to disperse the sediment in a shaking mode, and placing the
reagent bottle into the ultrasonic apparatus again for half an hour; sixthly,
drying the product in the
room temperature, and obtaining the final product, wherein the
mass ratio of the nanometer
zinc powder to the dispersion liquid ranges between 1 to 10 and 2 to 10, the ratio of water in the dispersion liquid to
cyclohexane in the dispersion liquid ranges between 10 to 1 and 21 to 1. The method for preparing the ZnO / Ag nanometer composite materials in the
room temperature is simple in process and economical and has environmental friendliness significance, and prepared ZnO / Ag nanometer composite materials are stable in structure and even in
granularity.