Colloidal synthesis of monodisperse trimetallic IrNiFe nanoparticles as highly active bifunctional electrocatalysts for acidic overall water splitting

2017 ◽  
Vol 5 (47) ◽  
pp. 24836-24841 ◽  
Author(s):  
Luhong Fu ◽  
Gongzhen Cheng ◽  
Wei Luo
Keyword(s):  
Synergistic Effect ◽  
Size Distribution ◽  
Water Splitting ◽  
Average Diameter ◽  
Colloidal Synthesis ◽  
Synthetic Method ◽  
Alloy Nanoparticles ◽  
Narrow Size Distribution ◽  
Acidic Media ◽  
Highly Active

Monodisperse IrNiFe alloy nanoparticles with an average diameter of 2.2 nm have been synthesized by a colloidal synthetic method. By taking advantage of the synergistic effect between Ir, Ni and Fe and the ultrasmall NPs with narrow size distribution, the as-synthesized IrNiFe catalyst exhibits superior HER/OER performances in acidic media.

Colloidal synthesis of iridium-iron nanoparticles for electrocatalytic oxygen evolution

2017 ◽  
Vol 1 (5) ◽  
pp. 1199-1203 ◽  
Author(s):  
Luhong Fu ◽  
Ping Cai ◽  
Gongzhen Cheng ◽  
Wei Luo
Keyword(s):  
Synergistic Effect ◽  
Iron Nanoparticles ◽  
Molecular Level ◽  
Iron Alloy ◽  
Average Diameter ◽  
Colloidal Synthesis ◽  
Alkaline Condition ◽  
Synthetic Method ◽  
Alloy Nanoparticles ◽  
A Current

Iridium-iron alloy nanoparticles with an average diameter of 2.4 nm have been synthesized by a colloidal synthetic method. By taking advantage of the synergistic effect between Ir and Fe at the molecular level, the as-synthesized IrFe/C catalyst exhibits OER performance with exceptional overpotentials of 278 and 286 mV at a current density of 10 mA cm−2 in acidic and alkaline condition, respectively.

Robust FeCo nanoparticles embedded in a N-doped porous carbon framework for high oxygen conversion catalytic activity in alkaline and acidic media

2018 ◽  
Vol 6 (46) ◽  
pp. 23445-23456 ◽  
Author(s):  
Xuan-Wen Gao ◽  
Junghoon Yang ◽  
Kyeongse Song ◽  
Wen-Bin Luo ◽  
Shi-Xue Dou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Porous Carbon ◽  
Graphitic Carbon ◽  
Alloy Nanoparticles ◽  
Feco Alloy ◽  
Acidic Media ◽  
Highly Active ◽  
Carbon Framework ◽  
Feco Nanoparticles ◽  
Oxygen Conversion

FeCo alloy nanoparticles were nucleated onto graphitic carbon layers through the pyrolysis of polydopamine (PDA) sub-micrometer spheres to form a highly active electrocatalytic system that exhibits excellent oxygen conversion catalytic activity in both alkaline and acidic media.

Formation of Platinum and Palladium Bimetallic Superfine Particles by Ultrasonic Irradiation

1997 ◽  
Vol 497 ◽  
Author(s):  
Toshiyuki Fujimoto ◽  
Shinya Terauchi ◽  
Hiroyuki Umehara ◽  
Isao Kojima ◽  
William Henderson
Keyword(s):  
Aqueous Solutions ◽  
Metal Ions ◽  
Size Distribution ◽  
Ultrasonic Irradiation ◽  
Bimetallic Nanoparticles ◽  
Average Diameter ◽  
Narrow Size Distribution ◽  
Bimetallic Particles

ABSTRACTPt/Pd bimetallic nanoparticles were prepared by ultrasonic irradiation of aqueous solutions containing salts of both metal ions. Uniform bimetallic particles were found to have a 2.8 nm average diameter and a narrow size distribution. The size was similar to Pt monometallic particles, and the shape was similar to Pd monometallic particles, both prepared by ultrasound in the same way.

Highly Active and Stable Water Splitting in Acidic Media Using a Bifunctional Iridium/Cucurbit[6]uril Catalyst

2019 ◽  
Vol 4 (6) ◽  
pp. 1301-1307 ◽  
Author(s):  
Hanhui You ◽  
Dongshuang Wu ◽  
Zhe-ning Chen ◽  
Fanfei Sun ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Acidic Media ◽  
Highly Active

Ultrasmall Ir nanoparticles for efficient acidic electrochemical water splitting

2018 ◽  
Vol 5 (5) ◽  
pp. 1121-1125 ◽  
Author(s):  
Luhong Fu ◽  
Xiang Zeng ◽  
Chaozhang Huang ◽  
Ping Cai ◽  
Gongzhen Cheng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Synthetic Method ◽  
Acidic Media ◽  
Term Stability ◽  
Long Term Stability ◽  
Overall Water Splitting ◽  
Electrochemical Water Splitting

1.8 nm monodisperse Ir nanoparticles have been prepared through a colloidal synthetic method, and further used as electrocatalysts for superior activity and long-term stability toward overall water splitting in acidic media.

Macrostructure and microphysics of Saturn's E-ring

1984 ◽  
Vol 75 ◽  
pp. 607-613 ◽  
Author(s):  
Kevin D. Pang ◽  
Charles C. Voge ◽  
Jack W. Rhoads
Keyword(s):  
Size Distribution ◽  
Spherical Shape ◽  
Mie Scattering ◽  
Narrow Size Distribution ◽  
Electrostatic Levitation ◽  
Volcanic Origin ◽  
Micron Diameter

Abstract.All observed optical and infrared properties of Saturn's E-ring can be explained in terms of Mie scattering by a narrow size distribution of ice spheres of 2 - 2.5 micron diameter. The spherical shape of the ring particles and their narrow size distribution imply a molten (possibly volcanic) origin on Enceladus. The E-ring consists of many layers, possibly stratified by electrostatic levitation.

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