Electrooxidation for Methanol on Pd Nanoparticles Modified Electrodes in Alkaline Medium

2012 ◽  
Vol 535-537 ◽  
pp. 431-435
Author(s):  
Ming Li Xu ◽  
Guo Tao Yang
Keyword(s):  
Cyclic Voltammetry ◽  
Catalytic Oxidation ◽  
Modified Electrode ◽  
Palladium Nanoparticles ◽  
Modified Electrodes ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Electrochemical Process ◽  
Glassy Carbon Electrodes ◽  
Cyclic Voltammetry Method

In this paper, Palladium nanoparticles were electrodeposited on the surface of glassy carbon electrodes by more circles cyclic voltammetry method and Palladium nanoparticles modified electrode (Pd/GCE) was obtained. Morphology and crystal structure of nanoparticles were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). The performance and electrochemical process of catalytic oxidation methanol were measured and analyzed by cyclic voltammetry (CV), chronoamperometric curves (i-t) and alternating current impedance spectra (AC impedance) in KOH solution. The results showed that catalytic activity of Pd nanoparticles modified electrode for methanol was over 30 times higher than that of the plate Pd electrode, and catalytic performance was good. In addition, the catalytic oxidation was mainly diffusion-controlled process.

Cyclic voltammetry electrodeposition of well-dispersed Pd nanoparticles on carbon paper as a flow-through anode for microfluidic direct formate fuel cells

Nanoscale ◽  
2020 ◽  
Vol 12 (39) ◽  
pp. 20270-20278
Author(s):  
Tong Zhang ◽  
Xun Zhu ◽  
Ding-Ding Ye ◽  
Rong Chen ◽  
Yuan Zhou ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Fuel Cells ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Carbon Paper ◽  
Flow Through ◽  
Catalyst Utilization

Cyclic voltammetry electrodeposition of palladium nanoparticles on carbon paper results in high catalytic performance, catalyst utilization and stability for their use in microfluidic direct formate fuel cells.

Application of a Novel Modified Electrode Based on NaY-Encapsulated Co(PAN) Complex

2008 ◽  
Vol 587-588 ◽  
pp. 109-113
Author(s):  
C. Teixeira ◽  
P. Parpot ◽  
Isabel Neves ◽  
António Maurício C. Fonseca
Keyword(s):  
Cyclic Voltammetry ◽  
Chemical Analysis ◽  
Aqueous Medium ◽  
Surface Analysis ◽  
Modified Electrode ◽  
Modified Electrodes ◽  
Redox Properties ◽  
New Method ◽  
Y Zeolite

CoPAN complex has been entrapped in the supercages of Y zeolite and the redox properties of this zeolite-encapsulated complex were investigated by cyclic voltammetry with a new method for the preparation of carbon toray-zeolite-modified electrode. Formation of the CoPAN complex was ascertained by surface analysis (SEM, XRD), chemical analysis (CA), spectroscopy methods (FTIR and UV/vis) and cyclic voltammetry in aqueous medium with zeolite-modified electrodes. The cyclic voltammetry studies obtained with a zeolite-modified electrode shows evidence for electroactivity restricted to boundary associated CoPAN complex.

Ultrafine Pd Nanoparticles Synthesis and Catalytic Performance in Methane Partial Oxidation

2011 ◽  
Vol 284-286 ◽  
pp. 1905-1908
Author(s):  
Bao Song Fu ◽  
Hu Liu ◽  
Guo Min Xiao
Keyword(s):  
Partial Oxidation ◽  
Palladium Nanoparticles ◽  
Oxidation Reaction ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Methane Partial Oxidation ◽  
Narrow Size Distribution ◽  
Pd Nanoparticle ◽  
Partial Oxidation Reaction ◽  
Nanoparticles Synthesis

Narrow size distribution Palladium nanoparticles was synthesized by adding Pd precursor into a modified PMHS polymer solution, and then jelled by aluminium. The multi-functional polymer was characterized by NMR; Pd nanoparticle samples were characterized by TEM and catalytic activity was tested in methane partial oxidation reaction.

Pd nanoparticles stabilized with phosphine-functionalized porous ionic polymer for efficient catalytic hydrogenation of nitroarenes in water

2020 ◽  
Vol 44 (9) ◽  
pp. 3681-3689 ◽  
Author(s):  
Yizhu Lei ◽  
Zaifei Chen ◽  
Guosong Lan ◽  
Renshu Wang ◽  
Xiao-Yu Zhou
Keyword(s):  
Catalytic Activity ◽  
Catalytic Hydrogenation ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Ionic Polymer ◽  
Electron Donation ◽  
Nano Size ◽  
Excellent Catalytic Performance

Small palladium nanoparticles stabilized with phosphine-functionalized PIP displayed high catalytic activity for nitroarenes hydrogenation. Nano-size Pd particles, electron-donation effect of phosphine ligand, and surface wettability account for its excellent catalytic performance.

Direct electron transfer of Phanerochaete chrysosporium cellobiose dehydrogenase at platinum and palladium nanoparticles decorated carbon nanotubes modified electrodes

2015 ◽  
Vol 17 (37) ◽  
pp. 24157-24165 ◽  
Author(s):  
Somayyeh Bozorgzadeh ◽  
Hassan Hamidi ◽  
Roberto Ortiz ◽  
Roland Ludwig ◽  
Lo Gorton
Keyword(s):  
Carbon Nanotubes ◽  
Electron Transfer ◽  
Phanerochaete Chrysosporium ◽  
Palladium Nanoparticles ◽  
Direct Electron Transfer ◽  
Modified Electrodes ◽  
Pd Nanoparticles ◽  
Cellobiose Dehydrogenase ◽  
Class I ◽  
Graphite Electrodes

Present work describes an efficient electrical connection of a class I cellobiose dehydrogenase on graphite electrodes modified with MWCNTs decorated with Pt and Pd nanoparticles.

scholarly journals Palladium supported on mixed-metal–organic framework (Co–Mn-MOF-74) for efficient catalytic oxidation of CO

RSC Advances ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 4318-4326
Author(s):  
Reda S. Salama ◽  
Mohammed A. Mannaa ◽  
Hatem M. Altass ◽  
Amr Awad Ibrahim ◽  
Abd El-Rahman S. Khder
Keyword(s):  
Co Oxidation ◽  
Catalytic Oxidation ◽  
Metal Organic Framework ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Oxidation Of Co ◽  
Effective Catalyst ◽  
Catalytic Oxidation Of Co ◽  
Metal Organic ◽  
Excellent Stability

Pd nanoparticles were loaded on Cox–Mn(1−x)-MOF-74. 5 wt% [email protected]–Mn0.5-MOF-74 was the most effective catalyst for CO oxidation. The prepared catalysts displayed excellent stability during CO oxidation without significant decrease in catalytic performance.

The Preparation, Characterization and Application of the CNTs Modified Electrode

2011 ◽  
Vol 694 ◽  
pp. 838-841
Author(s):  
Xue Mei Cui ◽  
Gui Fu Ding ◽  
Yan Wang ◽  
Wen Jing Lu ◽  
Hui Shen
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cyclic Voltammetry ◽  
Composite Film ◽  
Field Emission ◽  
Modified Electrode ◽  
Modified Electrodes ◽  
Preparation Technology ◽  
Chemical Etch ◽  
Scanning Electron

We propose a novel preparation technology of CNTs modified electrode. CNTs are mixed with polymer into homogenate by mechanical ball grinder; spin homogenate into composite film; solidify and polish composite film; chemical etch polymer partly from the surface of the composite film, in order to keep part of the CNTs be inserted in polyimide and the remainder outside of film, then CNTs modified electrode can be got. The morphologies of CNTs modified electrode are observed by field emission scanning electron microscopy (FESEM). The application of CNTs modified electrode in alum solution battery is demonstrated. Cyclic voltammetry of CNTs modified electrodes in V4+ solution is discussed.

Facile and green cinchonidine-assisted synthesis of ultrafine and well-dispersed palladium nanoparticles supported on activated carbon with high catalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (92) ◽  
pp. 75272-75280 ◽  
Author(s):  
Trung Tran Si Bui ◽  
Yeonwoo Kim ◽  
Sehun Kim ◽  
Hangil Lee
Keyword(s):  
Activated Carbon ◽  
Green Synthesis ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Capping Agent ◽  
Supported Palladium

We report the facile and green synthesis of activated carbon-supported palladium (Pd/AC) containing homogeneously dispersed Pd nanoparticles (Pd NPs) by using eco-friendly and naturally available cinchonidine (CD) as the capping agent.

Preparation of Copper Doped L-Threonine Modified Electrode and its Application in Determination of Hydroquinone

2013 ◽  
Vol 813 ◽  
pp. 413-418
Author(s):  
Yue Hua ◽  
Zong Rong Song ◽  
Jia Hong He ◽  
Ying Zhang ◽  
Cheng Bo Hu
Keyword(s):  
Cyclic Voltammetry ◽  
Modified Electrode ◽  
Supporting Electrolyte ◽  
Modified Electrodes ◽  
Differential Pulse ◽  
Determination Method ◽  
Scan Rate ◽  
Anodic Peak Current ◽  
Pulse Voltammetry

A copper doped L-threonine modified electrode was prepared by cyclic voltammetry (CV), and the electrochemical behavior of hydroquinone at the modified electrode had been studied. A novel determination method of hydroquinone using CV, chronoamperometry and differential pulse voltammetry (DPV) was established, and the scan rate and supporting electrolyte factors on catalytic oxidation of hydroquinone in modified electrodes were discussed. The results revealed that the modified electrode had showed obvious electrocatalytic activity for hydroquinone, and anodic peak current increased linearly with the concentration of hydroquinone in the range of 0.8-150 μmol/L with the detection limit of 0.4 μmol/L (S/N=3). The method has been applied to the determination of hydroquinone in water sample with satisfactory results.the recovery ranged from 95.9 % to 105.2 %.

scholarly journals Ruthenium Oxide Hexacyanoferrate as an Effective Electrode Modifier for Amperometric Detection of Iodate and Hydrogen Peroxide

2020 ◽  
Vol 67 (4) ◽  
pp. 1216-1226
Author(s):  
Totka Dodevska ◽  
Ivan Shterev ◽  
Yanna Lazarova ◽  
Dobrin Hadzhiev
Keyword(s):  
Hydrogen Peroxide ◽  
Cyclic Voltammetry ◽  
Modified Electrode ◽  
Electrochemical Behaviour ◽  
Electrochemical Techniques ◽  
Ruthenium Oxide ◽  
Amperometric Detection ◽  
Modified Electrodes ◽  
Fast Response ◽  
High Catalytic Activity

Ruthenium oxide hexacyanoferrate (RuOHCF) film was electrochemically deposited onto a glassy carbon (GC) surface using consecutive cyclic voltammetry as a facile and green synthetic strategy. The electrochemical behaviour and electrocatalytic properties of the modified electrode RuОHCF/GC were evaluated with regards to electroreduction of hydrogen peroxide and iodate in a strong acidic medium (pHs 1.0–2.0) by using different electrochemical techniques, including cyclic voltammetry and amperometry at a constant potential. Electrochemical studies indicated that RuОHCF/GC possess a high catalytic activity in both studied reactions, fast response and good reproducibility of the current signal. The RuОHCF/GC exhibits enhanced electrocatalytic behaviour compared with other modified electrodes reported before. The simple and reproducible procedure for electrode fabrication, the wide linear range, anti-interference performance and long-time stability of the RuОHCF/GC make it a promising sensing material for practical quantitative determination of hydrogen peroxide and iodate. Remarkably, the reported modified electrode provided superior sensitive (1050 μA mM–1 cm–2) and highly selective amperometric detection of iodate.

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