Biotemplated fabrication of size controlled palladium nanoparticle chains
Biotemplated fabrication of size controlled palladium nanoparticle chains
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DOI：
10.1039/c2jm16411f
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发表时间：
2012-04
影响因子：
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通讯作者：
Xingfei Zhou;Lifei Zheng;Rong-rong Li;Bin Li;S. Pillai;Peng Xu;Yi Zhang
中科院分区：
文献类型：
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作者：
Xingfei Zhou;Lifei Zheng;Rong-rong Li;Bin Li;S. Pillai;Peng Xu;Yi Zhang
金属纳米颗粒具有独特的尺寸和空间组织依赖的物理和化学性质，在单电子器件、化学催化剂和生物医药等领域有着广泛的应用。在本文中，通过将老化的四氯丙酸钠（II）与预先沉积在固体表面的胰高血糖素原纤维孵育，获得了钯纳米颗粒链。原子力显微镜（AFM）高度谱显示，四氯氰酸钠（II）的浓度可以使链内钯纳米颗粒的尺寸在2 ~ 16 nm范围内微调。此外，钯纳米颗粒沿原纤维的覆盖范围可以通过改变孵育时间来控制。该方法为在生物模板上构建钯纳米粒子集合提供了一种简便的方法。
Metal nanoparticles exhibit unique size- and spatial organization-dependent physical and chemical properties, and have a wide range of applications in various areas including single electron devices, chemical catalysts and biomedicines. In this paper, chains of palladium nanoparticles were obtained by incubating aged sodium tetrachloropalladate(II) with glucagon fibrils pre-deposited on a solid surface. AFM height profiles showed that the size of the palladium nanoparticles within the chains could be fine tuned in the range of similar to 2 to 16 nm as a function of the concentration of the sodium tetrachloropalladate(II). Moreover, the coverage of the palladium nanoparticles along the fibrils was controlled simply by varying the incubation time. This method provides a facile approach for the construction of a palladium nanoparticle ensemble on biotemplates.