Preparation method for gold-coated zinc oxide flower-like microspheres
A flower-shaped microsphere, zinc oxide technology, applied in the direction of zinc oxide/zinc hydroxide, nanotechnology, nanotechnology, etc., can solve the problem of lack of gold-coated zinc oxide flower-shaped microsphere preparation method, etc., to achieve good gas sensor performance and light. The effect of catalytic performance, large synthesis amount, and strong detection ability
Inactive Publication Date: 2015-05-13
YANGZHOU UNIV
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The invention discloses a preparation method for gold-coated zinc oxide flower-like microspheres. The preparation method comprises the following steps: (1) weighing Zn(CH3COOH)2.2H2O powder, trisodium citrate dihydrate powder and hexamethylenetetramine and dissolving in 100 ml of de-ionized water, wherein a molar ratio of Zn(CH3COOH)2.2H2O powder to trisodium citrate dihydrate powder to hexamethylenetetramine is 10 to 1 to 10; (2) putting a mixed solution into a serum bottle, reacting for 3-5 hours, taking out the serum bottle and cooling at a normal temperature; (3) performing centrifuging and cleaning on obtained precipitates and drying a product at 50-70 DEG C for 12 hours; (4) annealing at 400 DEG C for 30 minutes to obtain flower-like ZnO powder; (5) adding the ZnO powder into the de-ionized water, adding HAuCl4.4H2O, adding trisodium citrate dihydrate, and reacting; (6) performing centrifugation and cleaning on obtained precipitates to prepare the gold-coated zinc oxide flower-like microspheres. The gold-coated zinc oxide flower-like microspheres are good in gas-sensitive sensor performance and photocatalytic performance.
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