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tszszdz

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[求助] 分级ZnO纳米棒组装空心超结构催化及荧光应用

不知道小木虫里有没有前辈做过这个课题Hierarchical ZnO Nanorod-Assembled Hollow Superstructures for
Catalytic and Photoluminescence Applications。我在做这个实验时,按照实验步骤在加入CMC后,溶液中出现了许多极小细微褐色物质,不知道是什么物质。
部分原文:In a typical synthesis, 0.44 g of ZnAc2 3 2H2O
(analytically pure) was dissolved in 8 mL of deionized water with
magnetic stirring, and then 2 mL of ammonia solution (25%,
analytically pure) was added. After that, 10 mL of 2.8 g/L CMC
(300-800 mPa 3 S, chemically pure) aqueous solution was added
dropwise into the solution containing zinc acetate and ammonia.
After 5 min of stirring, the mixture was transferred to and sealed
in a 50 mL Teflon-lined autoclave, kept at 120 C for 2 h, and
finally cooled to roomtemperature. The precipitatewas collected
by centrifugation (4000 rpm, 3 min), washed alternately with
deionized water and ethanol, and dried in air under ambient
conditions.
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