Blar i Institutt for energi og prosessteknikk på tidsskrift "Ultrasonics sonochemistry"
Viser treff 1-15 av 15
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Assessment of the beneficial combination of electrochemical and ultrasonic activation of compounds originating from biomass
(Journal article; Peer reviewed, 2020)The electro-oxidation of organic molecules at the anode with simultaneous generation of hydrogen at the cathode in electrosynthesis reactors is considered as a promising and efficient process for the co-production of ... -
Does power ultrasound (26 kHz) affect the hydrogen evolution reaction(HER) on Pt polycrystalline electrode in a mild acidic electrolyte?
(Peer reviewed; Journal article, 2020)In this study, we investigated the effects of power ultrasound (26 kHz, up to ∼75 W/cm2, up to 100% acoustic amplitude, ultrasonic horn) on the hydrogen evolution reaction (HER) on a platinum (Pt) polycrystalline disc ... -
Does power ultrasound affect heterogeneous electron transfer kinetics?
(Journal article; Peer reviewed, 2018)Most of the observations seen in the application of power ultrasound in electrochemistry or also known as sonoelectrochemistry are due to enhanced mass-transport of electroactive species from the bulk solution to the ... -
Does power ultrasound affect hydrocarbon Ionomers?
(Peer reviewed; Journal article, 2021)The effect of low-frequency high-power ultrasound on hydrocarbon-based ionomers, cation exchange sulfonated phenylated polyphenylene (sPPB-H+) and anion exchange hexamethyl-p-terphenyl poly(benzimidazolium) (HMT-PMBI), was ... -
Does power ultrasound affect Nafion® dispersions?
(Journal article; Peer reviewed, 2020)The effect of low frequency power ultrasound on Nafion® ionomer used for fabricating proton exchange membrane fuel cell (PEMFC) and water electrolyzer (PEMWE) catalyst inks was investigated. In this study, a series of ... -
Effect of power ultrasound and Fenton reagents on the biomethane potential from steam-exploded birchwood
(Journal article; Peer reviewed, 2019)The global demand for non-fossil energy sources is increasing rapidly. As a result, biogas presents a suitable alternative; however, first generation biofuels (e.g., sugar cane) potentially impact food crops globally. ... -
The Effects of Power Ultrasound (24 kHz) on the Electrochemical Reduction of CO2 on Polycrystalline Copper Electrodes
(Peer reviewed; Journal article, 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 ... -
Frequency controlled agglomeration of pt-nanoparticles in sonochemical synthesis
(Peer reviewed; Journal article, 2022)Optimizing the surface area of nanoparticles is key to achieving high catalytic activities for electrochemical energy conversion devices. In this work, the frequency range (200 kHz–500 kHz) for maximum sonochemical radical ... -
How do dissolved gases affect the sonochemical process of hydrogen production? An overview of thermodynamic and mechanistic effects – On the “hot spot theory”
(Peer reviewed; Journal article, 2020)Although most of researchers agree on the elementary reactions behind the sonolytic formation of molecular hydrogen (H2) from water, namely the radical attack of H2O and H2O2 and the free radicals recombination, several ... -
Recent developments in the sonoelectrochemical synthesis of nanomaterials
(Peer reviewed; Journal article, 2019)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 ... -
Sonochemical and Sonoelectrochemical Production of Hydrogen - A Review
(Journal article; Peer reviewed, 2018)Reserves of fossil fuels such as coal, oil and natural gas on earth are finite. The continuous use and burning of these fossil fuel resources in the industrial, domestic and transport sectors has resulted in the extremely ... -
Sonochemical conversion of CO<inf>2</inf> into hydrocarbons: The Sabatier reaction at ambient conditions
(Journal article; Peer reviewed, 2021) -
Sonochemical dosimetry: A comparative study of Weissler, Fricke and terephthalic acid methods
(Peer reviewed; Journal article, 2021)Acoustic cavitation and sonochemical reactions play a significant role in various applications of ultrasound. A number of dosimetry methods are in practice to quantify the amount of radicals generated by acoustic cavitation. ... -
Understanding the Effects of Ultrasound (408 kHz) on the Hydrogen Evolution Reaction (HER) and the Oxygen Evolution Reaction (OER) on Raney-Ni in Alkaline Media
(Peer reviewed; Journal article, 2022)The hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) occurring at the Raney-Ni mesh electrode in 30 wt.-% aqueous KOH solution were studied in the absence (silent) and presence of ultrasound (408 ... -
The use of non-cavitating coupling fluids for intensifying sonoelectrochemical processes
(Peer reviewed; Journal article, 2020)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. ...