One-Step Synthesis of Highly Dispersed Gold Nanocrystals on Silica Spheres

Langmuir ◽  
2007 ◽  
Vol 23 (23) ◽  
pp. 11421-11424 ◽  
Author(s):  
Nopphawan Phonthammachai ◽  
Timothy J. White
Keyword(s):  
Silica Spheres ◽  
Gold Nanocrystals ◽  
Highly Dispersed ◽  
One Step ◽  
Dispersed Gold

A highly sensitive electrochemical microRNA-21 biosensor based on intercalating methylene blue signal amplification and a highly dispersed gold nanoparticles/graphene/polypyrrole composite

The Analyst ◽  
2021 ◽  
Vol 146 (8) ◽  
pp. 2679-2688
Author(s):  
Chammari Pothipor ◽  
Noppadol Aroonyadet ◽  
Suwussa Bamrungsap ◽  
Jaroon Jakmunee ◽  
Kontad Ounnunkad
Keyword(s):  
Methylene Blue ◽  
Gold Nanoparticles ◽  
Signal Amplification ◽  
Electrochemical Biosensor ◽  
Highly Sensitive ◽  
Highly Dispersed ◽  
Polypyrrole Composite ◽  
Amplification Strategy ◽  
Dispersed Gold ◽  
Potential Tool

An ultrasensitive electrochemical biosensor based on a gold nanoparticles/graphene/polypyrrole composite modified electrode and a signal amplification strategy employing methylene blue is developed as a potential tool for the detection of miRNA-21.

Facile, size-controlled deposition of highly dispersed gold nanoparticles on nitrogen carbon nanotubes for hydrogen sensing

2011 ◽  
Vol 160 (1) ◽  
pp. 1034-1042 ◽  
Author(s):  
Abu Z. Sadek ◽  
Vipul Bansal ◽  
Dougal G. McCulloch ◽  
Paul G. Spizzirri ◽  
Kay Latham ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Gold Nanoparticles ◽  
Hydrogen Sensing ◽  
Highly Dispersed ◽  
Controlled Deposition ◽  
Size Controlled ◽  
Dispersed Gold

Hydrochlorination of acetylene catalyzed by activated carbon supported highly dispersed gold nanoparticles

2018 ◽  
Vol 566 ◽  
pp. 15-24 ◽  
Author(s):  
Chuanming Zhang ◽  
Haiyang Zhang ◽  
Baochang Man ◽  
Xing Li ◽  
Hui Dai ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Activated Carbon ◽  
Highly Dispersed ◽  
Dispersed Gold

scholarly journals One-Step Synthesis of Highly Dispersed and Stable Ni Nanoparticles Confined by CeO2 on SiO2 for Dry Reforming of Methane

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5956
Author(s):  
Chengyang Zhang ◽  
Renkun Zhang ◽  
Hui Liu ◽  
Qinhong Wei ◽  
Dandan Gong ◽  
...  
Keyword(s):  
Carbon Deposition ◽  
Combustion Method ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Solution Combustion ◽  
Spatial Confinement ◽  
Oxide Interfaces ◽  
Highly Dispersed ◽  
One Step ◽  
The One

Sintering and carbon deposition are the two main ways to deactivate Ni-based catalysts during methane reforming. Herein, a stable Ni-CeO2/SiO2(CSC) catalyst was prepared by a one-step colloidal solution combustion method (CSC) and used for dry reforming of methane. In the catalyst, the small Ni particles were confined by CeO2 particles and highly dispersed on the surface of SiO2, forming a spatial confinement structure with a rich Ni-CeO2 interface in the catalyst. The Ni-CeO2/SiO2(CSC) catalyst prepared by the one-step CSC method exhibited superior activity at 700 °C during dry reforming of methane, and the performance of the catalyst was stable after 20 h of reaction with only a small amount of carbon deposition present (1.8%). Due to the spatial confinement effect, Ni was stable and less than 5 nm during reaction. The small Ni particle size and rich Ni-CeO2 interface reduced the rate of carbon deposition. This colloidal combustion method could be applied to prepare stable metal-based catalysts with rich metal–oxide interfaces for high-temperature reactions.

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