Synthesis of silica-gold nanocomposites and their porous nanoparticles by an in-situ approach.
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.
Kumar
Ashavani
A
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
Pushparaj
Victor L
VL
Murugesan
Saravanababu
S
Viswanathan
Gunaranjan
G
Nalamasu
Rohit
R
Linhardt
Robert J
RJ
Nalamasu
Omkaram
O
Ajayan
Pulickel M
PM
D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D013053:Spectrophotometry
D006046:Gold; D012822:Silicon Dioxide