Synthesis and Catalysis of Colloidal Dispersions of Pd/Ni Bimetallic Clusters

1996 ◽  
Vol 25 (9) ◽  
pp. 729-730 ◽  
Author(s):  
Naoki Toshima ◽  
Ping Lu
Keyword(s):  
Colloidal Dispersions ◽  
Bimetallic Clusters

Colloidal Dispersions of Palladium–Platinum Bimetallic Clusters Protected by Polymers. Preparation and Application to Catalysis

1989 ◽  
Vol 18 (10) ◽  
pp. 1769-1772 ◽  
Author(s):  
Naoki Toshima ◽  
Kakuta Kushihashi ◽  
Tetsu Yonezawa ◽  
Hidefumi Hirai
Keyword(s):  
Colloidal Dispersions ◽  
Bimetallic Clusters ◽  
Palladium Platinum

scholarly journals Gamma Radiolytic Formation of Alloyed Ag-Pt Nanocolloids

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
M. K. Temgire ◽  
Jayesh Bellare ◽  
S. S. Joshi
Keyword(s):  
Cluster Structure ◽  
Colloidal Dispersions ◽  
Bimetallic Clusters ◽  
Alloy Formation ◽  
Tem Analysis ◽  
Structural Formation ◽  
Gamma Radiolysis ◽  
Reduction Methods ◽  
Sequential Reduction ◽  
Brij 97

Colloidal dispersions of Ag-Pt composite nanoparticles were prepared by gamma radiolysis technique in the presence of nonionic surfactant Brij'97. Simultaneous as well as sequential reduction methods were employed in order to study the structural formation of Ag-Pt bimetallic clusters. Similar shape and trend was observed in optical spectra for both methods. Radiolysis yielded nearly spherical Ag-Pt bimetallic clusters by use of AgNO3 instead of AgClO4. The disappearance of the silver resonance and the simultaneous growth of the 260 nm resonance are independent of cluster structure and degree of alloying. To understand formation of Ag-Pt aggregate, the optical studies were also done as a function of amount of dose absorbed, concentration of surfactant, that is, Brij'97. The shape of the absorption spectrum did not change with increase in gamma radiation dose. TEM analysis exhibited fine dispersions of Ag-Pt clusters surrounded by a mantle when capped with Brij'97. The particle size obtained was in the range of 5–9 nm. On the basis of optical, XRD, and TEM analysis, alloy formation is discussed.

Assessment of gel formation in colloidal dispersions during mixing in turbulent jets

AIChE Journal ◽  
2013 ◽  
Vol 59 (12) ◽  
pp. 4567-4581 ◽  
Author(s):  
Miroslav Soos ◽  
Daniele L. Marchisio ◽  
Jan Sefcik
Keyword(s):  
Turbulent Jets ◽  
Colloidal Dispersions ◽  
Gel Formation

scholarly journals Intercluster exchanges leading to hydride-centered bimetallic clusters: a multi-NMR, X-ray crystallographic, and DFT Study

2021 ◽  
Author(s):  
Yu-Jie Zhong ◽  
Jian-Hong Liao ◽  
Tzu-Hao Chiu ◽  
Ying-Yann Wu ◽  
Samia Kahlal ◽  
...  
Keyword(s):  
Dft Study ◽  
Bimetallic Clusters ◽  
X Ray

Encouraged by the successful syntheses of alloy nanoclusters (or nanoparticles) via intercluster (or interparticle) reactions, herein we apply this methodology to prepare a series of bimetallic hydride clusters. Mixing of...

scholarly journals Synthesis and characterization of Fe, Co, and Ni colloids in 2-mercaptoethanol

2020 ◽  
Vol 10 ◽  
pp. 184798042096688
Author(s):  
Galo Cárdenas-Triviño ◽  
Sergio Triviño-Matus
Keyword(s):  
Electron Microscopy ◽  
Electron Diffraction ◽  
Colloidal Dispersions ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Chemical Liquid Deposition ◽  
Liquid Deposition

Metal colloids in 2-mercaptoethanol using nanoparticles (NPs) of iron (Fe), cobalt (Co), and nickel (Ni) were prepared by chemical liquid deposition method. Transmission electron microscopy, electron diffraction, UV-VIS spectroscopy, and scanning electron microscopy with electron dispersive X-ray spectroscopy characterized the resulting colloidal dispersions. The NPs exhibited sizes with ranges from 9.8 nm for Fe, 3.7 nm for Co, and 7.2 nm for Ni. The electron diffraction shows the presence of the metals in its elemental state Fe (0), Co (0), and Ni (0) and also some compounds FeO (OH), CoCo2S4, and NiNi2S4.

scholarly journals Colloidal suspensions of highly luminescent lanthanide-based coordination polymer molecular alloys for ink-jet printing and tagging of technical liquids

2021 ◽  
Vol 8 (8) ◽  
pp. 2125-2135
Author(s):  
Youenn Pointel ◽  
Carole Daiguebonne ◽  
Yan Suffren ◽  
Francois Le Natur ◽  
Stéphane Freslon ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Colloidal Suspensions ◽  
Colloidal Dispersions ◽  
Ink Jet Printing ◽  
Ink Jet ◽  
Jet Printing

A series of lanthanide-based coordination polymer molecular alloy colloidal dispersions usable for ink-jet printing and tagging of technical liquids.

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