Method for coating two ends of gold nanorod with silicon dioxide
A gold nanorod and silicon dioxide technology, which is applied in the synthesis field of metal nanomaterials, can solve the problem that the soft template method is easily affected by thermal and dynamic factors, and achieves the effect of not easy to dissociate, wide application prospect and good blocking effect.
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[0023] (1) Repairing the gold nano-dispersion by seed growth method:
[0024] 0.025ml, 0.1m will haucl 4 Solution and 10 ml, 0.1 m CTAB solution mixed, stirred into seed solution; 0.6 ml, 0.01m NABH 4 Solution; 2.5 mL, 0.1 m CTAB solution was dissolved in 0.037 g of Naol at 50 ° C at 21.25 ml of water, and then 0.9 ml, 4 mm agno was added to 30 ° C. 3 Solution, 30 ° C water bath constant temperature, stand for 15 min, add 0.25 ml, 10 mm HAUCL 4 The solution, 400 rpm was stirred for 60 min to give a solution; the growth solution pH was adjusted to 1.1 with a hydrochloric acid having a mass concentration of 37%, sequentially added 75 μL, 64 mm ascorbic acid solution and 40 μl of seed solution, and heated at 30 ° C for 12 h.
[0025] (2) Cartrom in the obtained gold nano-nano dispersion, remove the supernatant, then obtain the gold nanoscale nano, and disperse the gold nano rod in a CTAB solution having a concentration of 0.15 mm, and the concentration of 0.1 mm gold nano CTAB Disper...
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