Search results for "Electrosynthesi"

Crosslinking of poly(vinylpyrrolidone) activated by electrogenerated hydroxyl radicals: a first step towards a simple and cheap synthetic route of na…

2016

A facile electrosynthesis route for the preparation of polymer nanogels based on the in situ production of hydroxyl radicals is reported for the first time. Electro-Fenton process with continuous H2O2 electrogeneration and Fe2+ regeneration performs better than electro-oxidation with a boron-doped diamond or dimensionally stable anode for promoting crosslinking of poly(vinylpyrrolidone). Keywords: Electrogenerated hydroxyl radicals, BDD, DSA, Electro-Fenton, Polymer modification, Nanogel

Mechanism of the palladium-catalysed electrosynthesis of diethyl carbonate from carbon monoxide and ethanol

2004

Abstract A mechanism is proposed for the PdBr2(PPh3)2-catalysed electrosynthesis of diethyl carbonate from carbon monoxide and ethanol, proceeding at room temperature and atmospheric CO pressure. The mechanism is investigated by cyclic voltammetry and 31P NMR spectroscopy. The active Pd0 complex able to coordinate CO is generated by the chemical reduction of PdBr2(PPh3)2 by EtO– ions generated from EtOH at the cathode. After reaction of EtO– ions with Pd0(PPh3)2(CO), the ensuing anionic complex [(PPh3)2Pd0–COOEt]– is oxidized at the anode in a key step leading to BrPdII–COOEt(PPh3)2. A nucleophilic attack of ethoxide on the latter generates diethyl carbonate and the Pd0 complex active in th…

Fabbricazione e caratterizzazione di elettrodi di PbO2 nanostrutturati

2008

Growth and photo-electrochemical behaviour of Cu2O nanowires

2008

Fabrication of CIS and CIGS nanowires for application in micro-photovoltaic device

2009

Ultrafast lead-acid battery with nanostructured Pb and PbO2 electrodes

2018

Lead-acid batteries (LABs) are still extensively used in the field of energy storage, owing to a well-known and reliable technology. LABs can deliver high power and store energy for a very long time. In addition, they are reliable and easy to produce. The raw materials for their manufacture are practically unlimited, and about 95% of the materials can be recovered and reused. However, the lower specific energy storage (about 30-40 Wh kg-1), in comparison with other storage systems, limits their use in the most emerging and challenging applications, like electrical mobility, due to the high atomic weight of lead [1]. One of the principal limitations in the use of LABs in electric vehicles (E…

Template Electrodeposition of CIS and CIGS Nanowires for Application in Solar Cells

2010

Fabrication and Characterization of Different Nanostructures

2007

Fabrication and characterization of nanostructured materials

2008

Optimization of Electrodeposited Nickel-Zinc Alloys for Alkaline Electrolyzer with Nanostructured Electrodes

It is common opinion that hydrogen will become increasingly important over time. However, many research efforts still need to be made to develop efficient, low-cost and carbon-free hydrogen production. In this context, electrolysers will play a key role, but it is necessary to develop efficient and low-cost electrode/electrocatalyst materials. In this work, Nickel-Zinc alloy electrodes with nanowires morphology were investigated as cathode for alkaline electrolyzer. Electrodes were obtained by the simple method of template electrosynthesis that is also inexpensive and scalable. Nanostructured electrodes were analysed by morphological and chemical analyses. The nanowires composition is depen…