Formation of ultra-fine amorphous powders in Fe-M-B (M = transition metal) systems by chemical reduction method and their thermal and magnetic properties

1988 ◽  
Vol 19 (9) ◽  
pp. 2315-2318 ◽  
Author(s):  
Akihisa Inoue ◽  
Tsuyoshi Masumoto ◽  
Junji Saida
Keyword(s):  
Magnetic Properties ◽  
Transition Metal ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Chemical Reduction Method ◽  
Amorphous Powders

scholarly journals Efficient water oxidation with amorphous transition metal boride catalysts synthesized by chemical reduction of metal nitrate salts at room temperature

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32923-32930 ◽  
Author(s):  
Yisu Yang ◽  
Linzhou Zhuang ◽  
Thomas E. Rufford ◽  
Shaobin Wang ◽  
Zhonghua Zhu
Keyword(s):  
Transition Metal ◽  
Water Oxidation ◽  
Room Temperature ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Metal Nitrate ◽  
Metal Boride ◽  
Chemical Reduction Method ◽  
Highly Active ◽  
Metal Borides

We present a variety of amorphous transition-metal borides prepared at room temperature by a chemical reduction method as highly active catalysts for the oxygen evolution reaction (OER).

PHOTOACOUSTICS AND MAGNETIC STUDIES OF Fe3O4 NANOPARTICLES

2010 ◽  
Vol 09 (03) ◽  
pp. 243-250 ◽  
Author(s):  
N. RAJKUMAR ◽  
D. UMAMAHAESWARI ◽  
K. RAMACHANDRAN
Keyword(s):  
Thermal Conductivity ◽  
Particle Size ◽  
Magnetic Properties ◽  
Fe3o4 Nanoparticles ◽  
Room Temperature ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Chemical Reduction Method ◽  
Magnetic Studies

Fe3O4 nanoparticles of size 10 and 12 nm were synthesized by chemical reduction method and characterized for their structural, optical, thermal and magnetic properties at room temperature. Photoacoustic analysis shows a reduction in thermal conductivity atleast by one order from the bulk but within the nanoregime, thermal conductivity increases with decreasing particle size. VSM measurements indicate superparamagnetism in Fe3O4 nanoparticles.

scholarly journals Rod-Shaped Magnetite Nano/Microparticles Synthesis at Ambient Temperature

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Balaprasad Ankamwar ◽  
Ashwini Thorat
Keyword(s):  
Magnetic Properties ◽  
Room Temperature ◽  
Reduction Method ◽  
Colloidal Solution ◽  
Chemical Reduction ◽  
Capping Agent ◽  
Chemical Reduction Method ◽  
Temperature Synthesis ◽  
Mri Contrast ◽  
Average Aspect Ratio

Here, we reported room temperature synthesis of Fe3O4rod-shaped nano/microparticles by chemical reduction method from FeCl3precursor and NaBH4as the reducing agent in the presence of the pyrrole as a capping agent. The magnetic Fe3O4particles were characterized by several methods, such as SEM, XRD, FTIR, and TGA. The average aspect ratio of Fe3O4rod-shaped particles was ~2.8. These particles were redispersed in deionised water to form a colloidal solution and showed magnetic properties. This economical synthesis route is scalable, and Fe3O4particles can be exploited for various applications such as MRI contrast enhancement, biodiseperations, Ni-Fe batteries, and as a catalyst.

Antimicrobial Activity of Silver Nanoparticles Prepared Under an Ultrasonic Field

2011 ◽  
Vol 4 (3) ◽  
pp. 1491-1496
Author(s):  
Umadevi M ◽  
Rani T ◽  
Balakrishnan T ◽  
Ramanibai R
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Reduction Method ◽  
Therapeutic Potential ◽  
Chemical Reduction ◽  
Ultrasonic Field ◽  
Great Promise ◽  
Chemical Reduction Method ◽  
E Coli

Nanotechnology has great promise for improving the therapeutic potential of medicinal molecules and related agents. In this study, silver nanoparticles of different sizes were synthesized in an ultrasonic field using the chemical reduction method with sodium borohydride as a reducing agent. The size effect of silver nanoparticles on antimicrobial activity were tested against the microorganisms Staphylococcus aureus (MTCC No. 96), Bacillus subtilis (MTCC No. 441), Streptococcus mutans (MTCC No. 497), Escherichia coli (MTCC No. 739) and Pseudomonas aeruginosa (MTCC No. 1934). The results shows that B. subtilis, and E. coli were more sensitive to silver nanoparticles and its size, indicating the superior antimicrobial efficacy of silver nanoparticles. 

scholarly journals Synthesis of Cu core Ag shell nanoparticles using chemical reduction method

2015 ◽  
Vol 6 (2) ◽  
pp. 025018 ◽  
Author(s):  
Dung Chinh Trinh ◽  
Thi My Dung Dang ◽  
Kim Khanh Huynh ◽  
Eric Fribourg-Blanc ◽  
Mau Chien Dang
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Chemical Reduction Method ◽  
Shell Nanoparticles
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