Removal of Indigo Blue in Aqueous Solution Using Fe/Cu Nanoparticles and C/Fe–Cu Nanoalloy Composites

2009 ◽  
Vol 207 (1-4) ◽  
pp. 307-317 ◽  
Author(s):  
Jésica Trujillo-Reyes ◽  
Víctor Sánchez-Mendieta ◽  
Arturo Colín-Cruz ◽  
Raúl A. Morales-Luckie
Keyword(s):  
Aqueous Solution ◽  
Cu Nanoparticles ◽  
Indigo Blue

Electroless Deposition of Copper Nanostructures in Aqueous Solution

2014 ◽  
Vol 1043 ◽  
pp. 114-118 ◽  
Author(s):  
Michael Tan ◽  
Lance de Jesus ◽  
Kathy Lois Amores ◽  
Ellaine Datu ◽  
Mary Donnabelle Balela
Keyword(s):  
Aqueous Solution ◽  
Electroless Deposition ◽  
Low Cost ◽  
Protective Agent ◽  
Cu Nanoparticles ◽  
One Dimensional ◽  
Cu Nanowires ◽  
Mean Diameter ◽  
Dimensional Growth ◽  
Cu Nanostructures

This paper reports a simple and low cost process for the synthesis of various Cu nanostructures by electroless deposition. Oxidation-stable Cu nanoparticles and nanowires were prepared in aqueous solution in the presence of protective agents. When gelatin is used as protective agent, only spherical Cu nanoparticles with a mean diameter in the range of 37 to 44 nm are formed in the solution. Smaller nanoparticles are prepared at a higher concentration of gelatin. When ethylene diamine is used instead of gelatin, one-dimensional growth of Cu nanowires is favored. Varying the amount of EDA and gelatin provides morphological control over the nanostructures.

scholarly journals Size tunable elemental copper nanoparticles: extracellular synthesis by thermoanaerobic bacteria and capping molecules

2015 ◽  
Vol 3 (3) ◽  
pp. 644-650 ◽  
Author(s):  
Gyoung Gug Jang ◽  
Christopher B. Jacobs ◽  
Ryan G. Gresback ◽  
Ilia N. Ivanov ◽  
Harry M. Meyer, III ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Copper Nanoparticles ◽  
Biological Process ◽  
Cu Nanoparticles ◽  
Extracellular Synthesis ◽  
Elemental Copper ◽  
Reducing Bacteria ◽  
Metal Reducing Bacteria

Elemental Cu nanoparticles in aqueous solution were synthesized by a biological process using anaerobic metal-reducing bacteria and chelator and capping molecules.

scholarly journals Synthesis of silver/copper nanoparticles and their metalmetal bonding property

2013 ◽  
Vol 49 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Y. Kobayashi ◽  
T. Shirochi ◽  
Y. Yasuda ◽  
T. Morita
Keyword(s):  
Aqueous Solution ◽  
Citric Acid ◽  
Room Temperature ◽  
Particle Sizes ◽  
Cu Nanoparticles ◽  
Metal Bonding ◽  
Dispersing Agent ◽  
Bonding Property ◽  
Metal Metal ◽  
Bonding Technique

The present paper describes a metal-metal bonding technique using Cu nanoparticles containing Ag nanoparticles (Ag/Cu nanoparticles). The Ag/Cu nanoparticles with particle sizes of 30-85 nm and crystal sizes of 9.3 nm for Cu and 8.1 nm for Ag were produced by reducing 5.0x10-3 M Ag+ (AgClO4) and 5.0x10-3 M Cu2+ (Cu(NO3)2) simultaneously with 1.0 M hydrazine in aqueous solution containing 1.0 g/L poly(vinylpyrrolidone) as dispersing agent and 5?10-3 M citric acid as stabilizer at room temperature. Discs of metallic Cu or metallic Ag were successfully bonded under annealing at 400?C and pressurizing at 1.2 MPa for 5 min in H2 gas with help of the Ag/Cu particles. The shear strengths required for separating the bonded discs were as large as 19.7 for the Cu discs and 16.0 MPa for the Ag discs.

Synthesis of metallic Cu nanoparticles by controlling Cu complexes in aqueous solution

2014 ◽  
Vol 25 (3) ◽  
pp. 999-1006 ◽  
Author(s):  
Shun Yokoyama ◽  
Hideyuki Takahashi ◽  
Takashi Itoh ◽  
Kenichi Motomiya ◽  
Kazuyuki Tohji
Keyword(s):  
Aqueous Solution ◽  
Cu Nanoparticles ◽  
Cu Complexes

Effects of reaction parameters on preparation of Cu nanoparticles via aqueous solution reduction method with NaBH4

2012 ◽  
Vol 22 (12) ◽  
pp. 2991-2996 ◽  
Author(s):  
Qing-ming LIU ◽  
De-bi ZHOU ◽  
Yu-ya YAMAMOTO ◽  
Kensuke KURUDA ◽  
Masazumi OKIDO
Keyword(s):  
Aqueous Solution ◽  
Reduction Method ◽  
Cu Nanoparticles ◽  
Reaction Parameters

Quasicrystalline Catalyst for Steam-Reforming of Methanol

2000 ◽  
Vol 643 ◽  
Author(s):  
A.P. Tsai ◽  
M. Yoshimura
Keyword(s):  
Aqueous Solution ◽  
Production Rate ◽  
Steam Reforming ◽  
The Other ◽  
Cu Nanoparticles ◽  
Steam Reforming Of Methanol ◽  
Excellent Activity

AbstractSteam reforming of methanol (CH3OH + H2O -> 3H2 + CO2) has been performed on a number of Al-Cu-based stable quasicrystals and related alloys. Alloys leached in NaOH aqueous solution exhibit the highest activity for steam-reforming of methanol. Among the alloys, AlCuFe quasicrystal, after leaching treatment, reveals excellent activity. The production rate of H2 reaches 235 l/kgmin at 573K for steam reforming of methanol. The activity is due to Cu nanoparticles at the surfaces of quasicrystalline grains which are generated by leaching treatment. The quasicrystals have two advantages: one is their brittle nature, which allows them to be crushed efficiently; the other is the involvement of Fe, which suppresses the sintering of Cu particles.

Preparation of Cu nanoparticles with ascorbic acid by aqueous solution reduction method

2012 ◽  
Vol 22 (9) ◽  
pp. 2198-2203 ◽  
Author(s):  
Qing-ming LIU ◽  
Takehiro YASUNAMI ◽  
Kensuke KURUDA ◽  
Masazumi OKIDO
Keyword(s):  
Aqueous Solution ◽  
Ascorbic Acid ◽  
Reduction Method ◽  
Cu Nanoparticles
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