Synthesis of bismuth nanoparticles and self-assembled nanobelts by a simple aqueous route in basic solution

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• 作者：Dechong Ma^a ; Jingzhe Zhao^a ; ^{zhaojz@hnu.cn} ; ^{zhaojz@hnu.edu.cn} ; ^{zhao_jingzhe@163.com} ; Yan Zhao^a ; ^b ; Xinli Hao^a ; Linzhi Li^a ; Li Zhang^a ; Yan Lu^a ; Chengzhong Yu^a
• 关键词：Bismuth ; Nanoparticles ; Nanobelts ; Self-assembly
• 刊名：Colloids and Surfaces A: Physicochemical and Engineering Aspects
• 出版年：2012
• 出版时间：5 February, 2012
• 年：2012
• 卷：395
• 期：Complete
• 页码：276-283
• 全文大小：2156 K

文摘

An aqueous reduction method was successfully used to prepare Bi nanoparticles at 90 ¡ãC with bismuth nitrate pentahydrate [Bi(NO₃)₃¡¤5H₂O] and sodium-hypophosphite (NaH₂PO₂¡¤H₂O) as reactants. The diameters of Bi nanoparticles were controlled in the range of 10-50 nm under varied experimental parameters. And Bi nanobelts can also be constructed through self-assembly of Bi nanoparticles, which had typical lengths of up to 10 ¦Ìm and widths of up to 100 nm. Tartaric acid (TA, H₂C₄H₄O₆) and NaOH are key factors in our preparation. These Bi nanostructures are expected to find potential applications in a variety of areas due to their optical characteristics. Various techniques such as X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) were used to characterize the obtained nanostructures.