报道了种子生长法合成金纳米棒.以氯金酸(HAuCl4)为原料,以硼氢化钠(NaBH4)为还原剂,首先还原金离子(Au3+)得到直径为3-4nm的金种子.以银离子(Ag+)为辅助离子,以十六烷基溴化铵(CTAB)为表面活性剂,以抗坏血酸为弱还原剂,加入金种子溶液之后可以获得纳米棒.研究表明,通过改变银离子的用量可以控制金纳米棒长径比为2-5.TEM和UV-vis光谱的表征证实了金纳米棒的形貌和光谱特征,并深入探讨了金纳米棒的生长机理.
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