Ultrasonically Surface-Activated Nickel Foam as a Highly Efficient Monolith Electrode for the Catalytic Oxidation of Methanol to Formate.

Most of the current electrocatalysts for the methanol oxidation reaction are precious group metals such as Pt, Pd, and Ru. However, their use is limited due to their high cost, scarcity, and issues with carbon monoxide poisoning. We developed a simple method to prepare a nickel foam (NF)-based monolith electrode with a NiO nanosheet array structure as an efficient electrocatalyst toward the oxidation of methanol to produce formate.

Sonochemical conversion of CO into hydrocarbons: The Sabatier reaction at ambient conditions.

In this study, we investigated an alternative method for the chemical CO reduction reaction in which power ultrasound (488 kHz ultrasonic plate transducer) was applied to CO-saturated (up to 3%) pure water, NaCl and synthetic seawater solutions. Under ultrasonic conditions, the converted CO products were found to be mainly CH, CH and CH including large amount of CO which was subsequently converted into CH. We have found that introducing molecular H plays a crucial role in the CO conversion process and that increasing hydrogen concentration increased the yields of hydrocarbons.

The effects of power ultrasound (24 kHz) on the electrochemical reduction of CO on polycrystalline copper electrodes.

The electrochemical CO reduction reaction (CO2RR) on polycrystalline copper (Cu) electrode was performed in a CO-saturated 0.10 M NaCO aqueous solution at 278 K in the absence and presence of low-frequency high-power ultrasound (f = 24 kHz, P ~ 1.23 kW/dm) in a specially and well-characterized sonoelectrochemical reactor.

The use of non-cavitating coupling fluids for intensifying sonoelectrochemical processes.

For the first time, we have investigated the beneficial effects of non-cavitating coupling fluids and their moderate overpressures in enhancing mass-transfer and acoustic energy transfer in a double cell micro-sonoreactor. Silicon and engine oils of different viscosities were used as non-cavitating coupling fluids. A formulated monoethylene glycol (FMG), which is a regular cooling fluid, was also used as reference.

Recent developments in the sonoelectrochemical synthesis of nanomaterials.

In recent years, the synthesis and use of nanoparticles have been of special interest among the scientific communities due to their unique properties and applications in various advanced technologies. The production of these materials at industrial scale can be difficult to achieve due to high cost, intense labour and use of hazardous solvents that are often required by traditional chemical synthetic methods. Sonoelectrochemistry is a hybrid technique that combines ultrasound and electrochemistry in a specially designed electrochemical setup.

Flame Retardant Effect of Nano Fillers on Polydimethylsiloxane Composites.

Polydimethylsiloxane has exceptional fire retardancy characteristics, which make it a popular polymer in flame retardancy applications. Flame retardancy of polydimethylsiloxane with different nano fillers was studied. Polydimethylsiloxane composite fire property varies because of the shape, size, density, and chemical nature of nano fillers.