One-Step Synthetic Procedures and Electrochemical Properties for Monodisperse 1-2 nm Metallic Nanoparticles

A one-step, ‘fly-through’ method is reported to synthesize well-dispersed metallic nanoparticles on low-T substrates (i.e. textiles and paper) via high-temperature, rapid radiative heating.

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Growth and Characterization of Cobalt-filled Carbon Nanotubes Prepared by a Simple Catalytic Method

MRS Proceedings ◽

10.1557/proc-776-q8.17 ◽

2003 ◽

Vol 776 ◽

Author(s):

Xicheng Ma ◽

Yuanhua Cai ◽

Xia Li ◽

Ning Lun ◽

Shulin Wen

Keyword(s):

Carbon Nanotubes ◽

Metallic Nanoparticles ◽

Low Cost ◽

Catalytic Method ◽

Selected Area Electron Diffraction ◽

Transmission Electron ◽

High Resolution Tem ◽

One Step

AbstractHigh-quality cobalt-filled carbon nanotubes (CNTs) were prepared in situ in the decomposition of benzene over Co/silica-gel nano-scale catalysts. Unlike the previous reports, the catalysts needn't be pre-reduced prior to the forming of Co-filled CNTs, thus the advantage of this method is that Co-filled CNTs can be produced in one step, at a relatively low cost. Transmission electron microscopy (TEM) investigation showed that the products contained abundance of CNTs and most of them were filled with metallic nanoparticles or nanorods. High-resolution TEM (HRTEM), selected area electron diffraction (SAED) patterns and energy dispersive X-ray spectroscopy (EDS) confirmed the presence of Co inside the nanotubes. The encapsulated Co was further identified always as high temperature alpha-Co phase with fcc structure, which frequently consists of twinned boundaries and stacking faults. Based on the experimental results, a possible growth mechanism of the Co-filled CNTs was proposed.

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Influences of trace graphite on the morphology and capacitance of CoOOH/Co(OH)2 nanocomposites

Functional Materials Letters ◽

10.1142/s1793604720500186 ◽

2020 ◽

Vol 13 (03) ◽

pp. 2050018 ◽

Cited By ~ 1

Author(s):

Shuxia Liu ◽

Xiaoqi Tan ◽

Huaiping Zhang ◽

Yaodong Zhang ◽

Baobi Li ◽

...

Keyword(s):

Electrochemical Properties ◽

Electrode Material ◽

Cycling Stability ◽

Microwave Method ◽

Graphite Content ◽

One Step ◽

Excellent Cycling Stability ◽

Graphite Nanocomposites

In this study, CoOOH/Co(OH)2 and CoOOH/Co(OH)2/graphite nanocomposites were obtained using a one-step microwave method. The morphologies of nanocomposites changed intensively by adding trace graphite, thereby affecting the electrochemical properties. The optimum capacitance of the electrode material can reach 402[Formula: see text]F[Formula: see text]g[Formula: see text] at 2[Formula: see text]A[Formula: see text]g[Formula: see text] and could be increased by 172% (692[Formula: see text]F[Formula: see text]g[Formula: see text] until 2200 cycles when the graphite content is 10[Formula: see text]mg. An excellent cycling stability of 86.2% capacitance retention of the highest value was attained after 10,000 cycles, which is higher than those of the CoOOH/Co(OH)2 electrode. The proposed provides a simple means to improve the electrochemical properties by changing the morphology of electrode material in supercapacitors.

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Size-Dependent Electrochemical Properties of Pure Metallic Nanoparticles

The Journal of Physical Chemistry C ◽

10.1021/acs.jpcc.9b10962 ◽

2020 ◽

Vol 124 (5) ◽

pp. 3403-3409

Author(s):

Hongxin Ma ◽

Panpan Gao ◽

Ping Qian ◽

Yanjing Su

Keyword(s):

Electrochemical Properties ◽

Metallic Nanoparticles ◽

Size Dependent

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Electrochemical synthesis and one step modification of PMProDot nanotubes and their enhanced electrochemical properties

Chemical Communications ◽

10.1039/c2cc17152j ◽

2012 ◽

Vol 48 (21) ◽

pp. 2725 ◽

Cited By ~ 5

Author(s):

Thao M. Nguyen ◽

Seungil Cho ◽

Nitinun Varongchayakul ◽

Daehyun Yoon ◽

Joonil Seog ◽

...

Keyword(s):

Electrochemical Properties ◽

Electrochemical Synthesis ◽

One Step

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Polydentate Schiff Base Ligands and Their La(III) Complexes: Synthesis, Characterization, Antibacterial, Thermal, and Electrochemical Properties

International Journal of Inorganic Chemistry ◽

10.1155/2012/791219 ◽

2012 ◽

Vol 2012 ◽

pp. 1-11 ◽

Cited By ~ 6

Author(s):

Ali E. Şabik ◽

Muharrem Karabörk ◽

Gökhan Ceyhan ◽

Mehmet Tümer ◽

Metin Dığrak

Keyword(s):

Antimicrobial Activity ◽

Schiff Base ◽

Electrochemical Properties ◽

Antimicrobial Activities ◽

Nitrogen Atmosphere ◽

Spectroscopic Methods ◽

Schiff Base Ligands ◽

One Step ◽

The One ◽

Reversible Transfer

We synthesized the Schiff base ligands H2L1–H2L4 and their La(III) complexes and characterized them by the analytical and spectroscopic methods. We investigated their electrochemical and antimicrobial activity properties. The electrochemical properties of the ligands H2L1–H2L4 and their La(III) complexes were studied at the different scan rates (100 and 200 mV), different pH ranges (), and in the different solvents. The electrooxidation of the Schiff base ligands involves a reversible transfer of two electrons and two protons in solutions of pH up to 5.5, in agreement with the one-step two-electron mechanism. In solutions of pH higher than 5.5, the process of electrooxidation reaction of the Schiff base ligands and their La(III) complexes follows an ECi mechanism. The antimicrobial activities of the ligands and their complexes were studied. The thermal properties of the metal complexes were studied under nitrogen atmosphere in the range of temperature 20–1000°C.

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