Results 21 to 30 of about 20,211 (214)

Jean-Louis Luche and the Interpretation of Sonochemical Reaction Mechanisms

open access: yesMolecules, 2021
Sonochemistry can be broadly defined as the science of chemical and physical transformations produced under the influence of sound. The use of sound energy is rather a young branch of chemistry and does not have the clear definitive rules of other, more ...
Mircea Vinatoru, Timothy J. Mason
doaj   +1 more source

The effects of power ultrasound (24 kHz) on the electrochemical reduction of CO2 on polycrystalline copper electrodes

open access: yesUltrasonics Sonochemistry, 2021
The electrochemical CO2 reduction reaction (CO2RR) on polycrystalline copper (Cu) electrode was performed in a CO2-saturated 0.10 M Na2CO3 aqueous solution at 278 K in the absence and presence of low-frequency high-power ultrasound (f = 24 kHz, PT ~ 1.23 
Md Hujjatul Islam   +5 more
doaj   +1 more source

Hydrodynamic Cavitation: A Promising Technology for Industrial-Scale Synthesis of Nanomaterials

open access: yesFrontiers in Chemistry, 2020
One of the most challenging issues for the large-scale application of nanomaterials, especially nanocarbons, is the lack of industrial synthetic methods. Sonochemistry, which creates an extreme condition of high pressure and temperature, has been thereby
Xun Sun   +4 more
doaj   +1 more source

Stimulation of bioprocesses by ultrasound [PDF]

open access: yes, 2011
Ultrasound (US) has become a ubiquitous technological process in a large variety of scientific disciplines. However, little information exists on the use of ultrasound to enhance biological processes and/or processing and consequently this paper provides
Akunna, Joseph C.   +4 more
core   +3 more sources

Ultrasound enhancement of microfiltration performance for natural organic matter removal [PDF]

open access: yes, 2007
Sonication of water at 1500 W power prior to microfiltration showed that short sonication times (60 s) gave a reduced flux decline. It is suggested that a less potent, smaller molecular form of the natural organic matter (NOM) was produced by sonication.
Bolto, Brian   +4 more
core   +1 more source

Effects of ultrasound on polymeric foam porosity [PDF]

open access: yes, 2008
A variety of materials require functionally graded cellular microstructures whose porosity is engineered to meet specific applications (e.g. mimic bone structure for orthopaedic applications; fulfil mechanical, thermal or acoustic constraints in ...
Blitz   +23 more
core   +2 more sources

Estudio preliminar sobre el efecto del ultrasonido en las propiedades fisicoquímicas del vino tinto [PDF]

open access: yes, 2015
Ultrasound is regarded as a potential alternative method for improving the quality of some wines. This study was initiated with the objective of evaluating the effects of ultrasound on some important physicochemical properties of red wine such as ...
Arts I. C.   +6 more
core   +1 more source

Advanced Fenton processing of aqueous phenol solutions:a continuous system study including sonication effects [PDF]

open access: yes, 2008
Our previous report based on a batch reactor system for the Advanced Fenton Process (AFP) showed that pH, hydrogen peroxide and the organic substances treated are among the most important factors affecting the oxidation efficiency.
Bremner, D. H.   +3 more
core   +3 more sources

Modern Methods for the Sustainable Synthesis of Metalloporphyrins

open access: yesMolecules, 2021
Metalloporphyrins are involved in many and diverse applications that require the preparation of these compounds in an efficient manner, which nowadays, also involves taking into consideration sustainability issues.
Carla Gomes   +2 more
doaj   +1 more source

Investigation of Sonoelectrochemistry Process on Discoloration of Basic Yellow 28 in Presence of Titanium Dioxide Nanoparticles [PDF]

open access: yesشیمی کاربردی روز, 2017
In this work, discoloration of basic yellow 28 using sonoelectrochemical method in presence of titanium dioxide nanoparticles was investigated. The respond surface methodology (RSM) was applied for optimization of discoloration.
Ali Etemadifar   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy