scholarly journals Photon-induced synthesis of ultrafine metal nanoparticles on graphene as electrocatalysts: impact of functionalization and doping

2020 ◽  
Vol 8 (2) ◽  
pp. 714-723 ◽  
Author(s):  
Kun Guo ◽  
Laura J. Rowland ◽  
Liam H. Isherwood ◽  
Gyorgyi Glodan ◽  
Aliaksandr Baidak
Keyword(s):  
Metal Nanoparticles ◽  
High Energy ◽  
Alternative Strategy ◽  
Ultrafine Metal

Utilizing reducing species generated by high-energy photons offers an alternative strategy to prepare metal nanoparticles (NPs) in the absence of a foreign reductant.

scholarly journals Controlled growth of ultrafine metal nanoparticles mediated by solid supports

2021 ◽  
Vol 3 (7) ◽  
pp. 1865-1886
Author(s):  
Hongyin Hu ◽  
Shuanglong Lu ◽  
Ting Li ◽  
Yue Zhang ◽  
Chenxi Guo ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Catalytic Properties ◽  
Structural Features ◽  
Controlled Growth ◽  
Solid Supports ◽  
Ultrafine Metal ◽  
Different Types

This article reviews the controlled growth of UMNPs mediated by different types of solid supports and their catalytic properties. The importance of certain structural features of the supports is also discussed.

Sputter deposition onto ionic liquids: Simple and clean synthesis of highly dispersed ultrafine metal nanoparticles

2006 ◽  
Vol 89 (24) ◽  
pp. 243117 ◽  
Author(s):  
Tsukasa Torimoto ◽  
Ken-ichi Okazaki ◽  
Tomonori Kiyama ◽  
Kaori Hirahara ◽  
Nobuo Tanaka ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Metal Nanoparticles ◽  
Sputter Deposition ◽  
Ultrafine Metal ◽  
Clean Synthesis ◽  
Highly Dispersed

Graphene-Supported Ultrafine Metal Nanoparticles Encapsulated by Mesoporous Silica: Robust Catalysts for Oxidation and Reduction Reactions

2013 ◽  
Vol 126 (1) ◽  
pp. 254-258 ◽  
Author(s):  
Lu Shang ◽  
Tong Bian ◽  
Baihui Zhang ◽  
Donghui Zhang ◽  
Li-Zhu Wu ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Metal Nanoparticles ◽  
Reduction Reactions ◽  
Ultrafine Metal

Effect of Size Distribution on Optical Absorption During Intense Pulsed Light Sintering of Metal Nanoparticles

2018 ◽  
Author(s):  
Harish Devaraj ◽  
Hyun-Jun Hwang ◽  
Rajiv Malhotra
Keyword(s):  
Optical Absorption ◽  
Metal Nanoparticles ◽  
Size Distribution ◽  
Metallic Nanoparticles ◽  
Bimodal Distribution ◽  
High Energy ◽  
Intense Pulsed Light ◽  
Nanoparticle Size ◽  
Xenon Lamp ◽  
Pulsed Light

Intense pulsed light sintering (IPL) of nanoparticles on rigid or flexible substrates enables rapid fabrication of thin films and patterns over large areas. In IPL, visible light from a high energy xenon lamp is absorbed by the nanoparticles for rapid sintering of metallic and non-metallic nanoparticles. This plasmonic optical absorption during the process for metal nanoparticles has been shown to depend on individual nanoparticle size. However, but there is little understanding of how this absorption depends on nanoparticle size distribution during IPL. This work incorporates a fully three-dimensional packing model along with an electromagnetic model of plasmonic absorption in silver nanoparticles to bridge this gap. It is shown that smaller standard deviation in a unimodal distribution and smaller size ratios in a bimodal distribution demonstrate relatively higher optical absorption in IPL.

Assistance of metal nanoparticles in photocatalysis – nothing more than a classical heat source

2019 ◽  
Vol 214 ◽  
pp. 215-233 ◽  
Author(s):  
Yonatan Sivan ◽  
Ieng Wai Un ◽  
Yonatan Dubi
Keyword(s):  
Heat Source ◽  
Metal Nanoparticles ◽  
Thermal Effect ◽  
Chemical Reactions ◽  
Thermal Equilibrium ◽  
High Energy

We show that the number of high energy non-thermal electrons in a metal under CW illumination is very low but much higher than in thermal equilibrium, implying that faster chemical reactions reported previously are extremely likely to originate from a pure thermal effect.

scholarly journals Reverse Monte Carlo modeling for local structures of noble metal nanoparticles using high-energy XRD and EXAFS

RSC Advances ◽  
2019 ◽  
Vol 9 (51) ◽  
pp. 29511-29521 ◽  
Author(s):  
Masafumi Harada ◽  
Risa Ikegami ◽  
Loku Singgappulige Rosantha Kumara ◽  
Shinji Kohara ◽  
Osami Sakata
Keyword(s):  
Monte Carlo ◽  
Metal Nanoparticles ◽  
High Energy ◽  
Atomic Scale ◽  
Noble Metal Nanoparticles ◽  
Reverse Monte Carlo ◽  
Monte Carlo Modeling ◽  
3 Dimensional ◽  
Local Structures ◽  
Structure Of Metal

3-Dimensional atomic-scale structure of metal nanoparticles obtained by RMC-based simulations using HEXRD and EXAFS data.

scholarly journals In Situ Synthesis of Highly Dispersed and Ultrafine Metal Nanoparticles from Chalcogels

2017 ◽  
Vol 139 (8) ◽  
pp. 2900-2903 ◽  
Author(s):  
Jian Liu ◽  
Kai He ◽  
Weiqiang Wu ◽  
Tze-Bin Song ◽  
Mercouri G. Kanatzidis
Keyword(s):  
Metal Nanoparticles ◽  
In Situ Synthesis ◽  
Ultrafine Metal ◽  
Highly Dispersed
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