Kumar Ashavani, Pushparaj Victor L, Murugesan Saravanababu, Viswanathan Gunaranjan, Nalamasu Rohit, Linhardt Robert J, Nalamasu Omkaram, Ajayan Pulickel M
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
Langmuir. 2006 Oct 10;22(21):8631-4. doi: 10.1021/la060869g.
We demonstrate the one-step synthesis of a silica-gold nanocomposite by simultaneous hydrolysis and reduction of gold chloride. The aminophenyl group was used as a reducing agent, and the trimethoxy silane group acts a precursor for the formation of silica. The porous gold nanoparticles were formed by etching out the silica-gold nanocomposite by hydrofluoric acid. The electron diffraction of porous gold nanoparticles showed that the particle are polycrystalline with FCC structure. The silica-gold nanocomposite exhibited nonlinear current-voltage behavior, and the porous gold nanoparticles displayed linear current-voltage behavior.
我们通过同时水解和还原氯化金证明了二氧化硅-金纳米复合材料的一步合成。氨基苯基用作还原剂，三甲氧基硅烷基作为二氧化硅形成的前体。通过用氢氟酸蚀刻二氧化硅-金纳米复合材料形成多孔金纳米颗粒。多孔金纳米颗粒的电子衍射表明颗粒是具有面心立方结构的多晶。二氧化硅-金纳米复合材料表现出非线性电流-电压行为，而多孔金纳米颗粒表现出线性电流-电压行为。
