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化工学报  2015 

毕赤酵母-表面活性剂协同作用制备Au纳米线

DOI: 10.11949/j.issn.0438-1157.20150925, PP. 3661-3668

Keywords: Au纳米线,毕赤酵母,表面活性剂

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Abstract:

在毕赤酵母-十六烷基三甲基溴化铵(CTAB)的协同作用下利用抗坏血酸(AA)还原氯金酸(HAuCl4)制备Au纳米线,采用SEM、TEM、HRTEM及SAED等手段对Au产物进行表征,结果表明产物为带有分支结构的Au纳米线,纳米线在分叉处的晶型是连续的,具有多晶结构的特征。研究发现,菌体-HAuCl4的相互作用对于后续纳米线的生成过程至关重要,部分Au(Ⅲ)可吸附在菌体表面并被还原为很小的Au(0),在AA加入后纳米线的生成过程中起到了晶种的作用。菌体-HAuCl4作用时间过长会导致菌体表面生成的Au(0)趋于稳定,不利于进一步生长为Au纳米线。菌体-表面活性剂的协同作用导致分支结构的多晶Au纳米线的生成。

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