Superior electrocatalytic activity from nanodendritic structure consisting of a PtFe bimetallic core and Pt shell

2015 ◽  
Vol 51 (15) ◽  
pp. 3215-3218 ◽  
Author(s):  
Jianbing Zhu ◽  
Meiling Xiao ◽  
Kui Li ◽  
Changpeng Liu ◽  
Wei Xing
Keyword(s):  
Electrocatalytic Activity ◽  
Reduction Process ◽  
Core Shell

A novel PtFe@Pt core–shell nanostructure with a PtFe bimetallic core and a nanodendrite Pt shell was fabricated through a facile aqueous reduction process.

A crystalline–amorphous Ni–Ni(OH)2 core–shell catalyst for the alkaline hydrogen evolution reaction

2020 ◽  
Vol 8 (44) ◽  
pp. 23323-23329
Author(s):  
Jing Hu ◽  
Siwei Li ◽  
Yuzhi Li ◽  
Jing Wang ◽  
Yunchen Du ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Core Shell ◽  
Alkaline Conditions

Crystalline–amorphous Ni–Ni(OH)2 core–shell assembled nanosheets exhibit outstanding electrocatalytic activity and stability for hydrogen evolution under alkaline conditions.

scholarly journals Facile Synthesis of Carboxymethyl Cellulose Coated Core/Shell SiO2@Cu Nanoparticles and Their Antifungal Activity against Phytophthora capsici

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 888
Author(s):  
Nguyen Thi Thanh Hai ◽  
Nguyen Duc Cuong ◽  
Nguyen Tran Quyen ◽  
Nguyen Quoc Hien ◽  
Tran Thi Dieu Hien ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Carboxymethyl Cellulose ◽  
Chemical Reduction ◽  
Low Cost ◽  
Phytophthora Capsici ◽  
Reduction Process ◽  
Spherical Shape ◽  
Core Shell ◽  
Cu Nanoparticles ◽  
Average Size

Cu nanoparticles are a potential material for creating novel alternative antimicrobial products due to their unique antibacterial/antifungal properties, stability, dispersion, low cost and abundance as well as being economical and ecofriendly. In this work, carboxymethyl cellulose coated core/shell SiO2@Cu nanoparticles (NPs) were synthesized by a simple and effective chemical reduction process. The initial SiO2 NPs, which were prepared from rice husk ash, were coated by a copper ultrathin film using hydrazine and carboxymethyl cellulose (CMC) as reducing agent and stable agent, respectively. The core/shell SiO2@Cu nanoparticles with an average size of ~19 nm were surrounded by CMC. The results indicated that the SiO2@Cu@CMC suspension was a homogenous morphology with a spherical shape, regular dispersion and good stability. Furthermore, the multicomponent SiO2@Cu@CMC NPs showed good antifungal activity against Phytophthora capsici (P. capsici). The novel Cu NPs-based multicomponent suspension is a key compound in the development of new fungicides for the control of the Phytophthora disease.

A simple one-pot strategy to platinum–palladium@palladium core–shell nanostructures with high electrocatalytic activity

2014 ◽  
Vol 265 ◽  
pp. 231-238 ◽  
Author(s):  
Jing-Jing Lv ◽  
Jie-Ning Zheng ◽  
Ying-Ying Wang ◽  
Ai-Jun Wang ◽  
Li-Li Chen ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Core Shell ◽  
One Pot ◽  
Shell Nanostructures

In situ electrochemical formation of NiSe/NiOx core/shell nano-electrocatalysts for superior oxygen evolution activity

2016 ◽  
Vol 6 (23) ◽  
pp. 8268-8275 ◽  
Author(s):  
Ruiqin Gao ◽  
Guo-Dong Li ◽  
Jiabo Hu ◽  
Yuanyuan Wu ◽  
Xinran Lian ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Electrocatalytic Activity ◽  
Core Shell ◽  
Excellent Activity

Despite the superior oxygen evolution electrocatalytic activity of metal-selenide nanostructures, especially when compared with their oxide counterparts, the origin behind their excellent activity remains unclear.

A Novel hig E Aptamer Biosensor Base on Core-Shell Fe3O4@Au Magnetic Composite Nanoparticles

2015 ◽  
Vol 1118 ◽  
pp. 170-175
Author(s):  
Guo Yin Huang ◽  
Long Fei Ma ◽  
Ming Yuan Guan ◽  
Jin Tao Liang ◽  
Yong Huang ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Immunoglobulin E ◽  
Reduction Process ◽  
Hydroxylamine Hydrochloride ◽  
Silver Ions ◽  
Response Speed ◽  
Composite Nanoparticles ◽  
Core Shell ◽  
Magnetic Composite ◽  
Au Nps

In this paper, a novel hIg E aptamer biosensor was designed base on the core-shell Fe3O4@Au magnetic composite nanoparticles (Fe3O4@Au NPs). Firstly, Fe3O4@Au NPs were prepared by one-step reduction process with Fe3O4 nanoparticles (Fe3O4 NPs) as magnetic core and hydroxylamine hydrochloride as deoxidizer. Then, the morphology, composition, and properties of Fe3O4@Au NPs were characterized by scanning electron microscope (SEM), fourier translation infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM) and so on. Lastly, Human immunoglobulin E (hIg E) was used as the model analyte, a hIg E aptamer biosensor was presented which the hIg E antibody is covalently immobilized as the capture probe on Fe3O4@Au NPs surface, and hIg E aptamer was used as the detection probe. After the hIg E antigen was captured, the ascorbic acid 2-phosphate (AAP) formed ascorbic acid (AA) in the presence of alkaline phosphatase (ALP). The AA reduced the silver ions (Ag+) in the solution to silver metal that preferentially deposited on surface of the Fe3O4@Au NPs. The amount of deposited silver could be quantified using the electrochemical methods. The oxidation current of Ag0 was linear with the concertration of hIg E over the range 0.25~2.0 μg/mL. Therefore, the hIg E aptamer biosensor possessed higher sensitivity, low detection limit and rapid response speed.

Controllable assembly of two types of metal nanoparticles onto block copolymer nanospheres with ordered spatial distribution

2015 ◽  
Vol 3 (7) ◽  
pp. 3382-3389 ◽  
Author(s):  
Shilin Mei ◽  
Jie Cao ◽  
Yan Lu
Keyword(s):  
Spatial Distribution ◽  
Block Copolymer ◽  
Metal Nanoparticles ◽  
Catalytic Properties ◽  
Reduction Process ◽  
Template Method ◽  
Core Shell ◽  
Aao Template ◽  
Shell Particles

Pd@PS-P2VP @DT–Au core–shell particles are fabricated based on the modified AAO template method and anin situreduction process, showing efficient optical and catalytic properties.

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