60 results about "Sonochemistry" patented technology

The invention utilizes multiple frequency ultrasound generators driving multiple frequency harmonic transducer arrays at sweeping frequencies into the megasonic range. Generator signals that increase cavitation efficiency and that have successive time periods with predominantly stable cavitation and predominantly transient cavitation further improve the performance of the cleaning, microbiological inactivation, sonochemistry or processing systems. Probes that monitor the ultrasound and feedback the information to the generator provide consistency of process.

The invention relates to metal-coated composite powder, in particular to a sonochemistry preparation method allowing the surface of copper powder to be coated with a nickel and phosphorus alloy layer. The method is characterized in that high-energy ultrasonic agitation is effectively added into a traditional process of chemical plating, and the cavitation effect, the oscillation effect and other effects of the high-energy ultrasonic agitation are utilized, so that the preparation efficiency of composite copper powder coated with nickel is improved, and the problems of powder accumulating and the like are solved. In addition, when the copper powder coated with the nickel and phosphorus is prepared, sodium hypophosphite is used as a reducing agent of an acidic chemical plating solution, and the plating solution is easy to prepare and high in stability; due to the fact that activating treatment is carried out on the copper powder through hydrochloric acid before plating, the defect that traditionally, when salt activation and sensibilization are carried out on the surface of the copper powder, precious metal palladium salt is brought into the plating solution, so that the plating solution is decomposed is overcome, and also the activation processes of the powder are simplified. Meanwhile, because the high-energy ultrasonic agitation is kept in the whole plating process, the prepared composite powder is excellent in dispersity, the coating layer of the powder is complete and uniform, the plating of the powder is compact, and the powder is in an amorphous state.

The invention utilizes single and multiple frequency ultrasound generators driving single and multiple frequency resonant and harmonic transducer arrays at frequencies into the megasonic range. Generator signals that increase cavitation efficiency improve the performance of the cleaning, microbiological inactivation, sonochemistry or processing systems.

An acoustic crystal structure includes defect cavities that concentrate the driving pressure from applied sound waves into the cavities to cavitate gas bubbles in a liquid to produce sonoluminescence. This device may be used to study sonoluminescence or cavitation or to perform sonochemistry, nuclear fusion etc. in the cavities. A waveguide may be operatively coupled to the acoustic crystal to extract, collect and route a band of electromagnetic (EM) radiation around a specified source wavelength to an output port for emission by an antenna to provide an EM source. The waveguide may, for example, be a photonic crystal defect waveguide, a photonic crystal optical fiber or Sommerfeld waveguide. The marriage of the sonoluminescence phenomena with an acoustic crystal and embedded waveguide provides for an efficient source of narrow or broad band IR or THz radiation

The invention provides an ultrasonic magneto-rheological chemical composite polishing device. The ultrasonic magneto-rheological chemical composite polishing device comprises a rack, a cup-shaped polishing disc, a magneto-rheological tool head and an ultrasonic vibration mechanism, wherein the cup-shaped polishing disc is arranged on the rack and used for containing a working solution and placing a workpiece to be machined, and the cup-shaped polishing disc can move back and forth in the horizontal plane relative to the rack; the magneto-rheological tool head has magnetism and is used for being inserted into the working solution and acting with the working solution to enable the working solution to form a magneto-rheological grinding head; and the ultrasonic vibration mechanism comprises an ultrasonic generator, an ultrasonic transducer electrically connected with the ultrasonic generator and ultrasonic amplitude transformers arranged at the output end of the ultrasonic transducer, the ultrasonic amplitude transformers are arranged up and down, the magneto-rheological tool head is arranged at the lower ends of the ultrasonic amplitude transformers, the upper ends of the ultrasonic amplitude transformers are connected with the output end of the ultrasonic transducer, and the ultrasonic transducer is arranged on the rack in an up-down moving mode. According to the polishing device, ultrasonic high-frequency vibration, the acoustic-chemical effect and the magneto-rheological effect are combined, and therefore the polishing effect can be effectively improved.

The invention discloses an Al2O3-Tob/HA compound sewage treatment material, and a preparation method and application thereof. The preparation method comprises the following steps: using pre-pickling pulverized fuel ash as a silicon source and an aluminium source, using slaked lime Ca(OH)2 as a symbiotic calcium source and using phosphoric acid as a phosphorus source; at first, adopting a sonochemistry method, and controlling the temperature and regulating the pH value to 10.5 to 11.5 to prepare an aluminum substituted tobermorite performed polymer; then adding a phosphoric acid solution to obtain an Al2O3-Tob and HA symbiotic co-polymer; finally adopting a hydrothermal vapor pressure method to prepare an Al2O3-Tob/HA compound sewage treatment material of which the compound ratio X is 2 to 4. Test results show that the product impurity phases are few, the purity is high, Al2O3-Tob and HA crystallization conditions are favorable, and the product has a net framework structure, large specific surface area, and a strong property for adsorbing and desorbing heavy metal ion Cd<2+>, and the adsorbing property is enhanced along with the increase of the compound ratio in an experimental scale. The production process is simple, the operation process is convenient, the production cost is low, and the preparation method is a practical and effective method for using pulverized fuel ash solid wastes.

The invention relates to a sonochemical-synergizing-electrochemical method for continuously treating oilfield wastewater, belonging to the wastewater treatment field during oilfield exploitation. The method disclosed by the invention comprises the following steps: (1) oxidizing and degrading organic pollutants in the oilfield in a complex oxidizing method of synergizing sonochemistry and electrochemistry, wherein an ultrasonic frequency is 20-500 Hz, and an electric current density is 50-5000 A/m<2>; (2) cleaning scale on a synergistically and electrochemically oxidized cathode by using an ultrasonic cleaning method; and (3) coagulating, air-supporting or depositing, and filtering. By using the method for treating oilfield wastewater provided by the invention, medicaments are avoided from being added, medicament resistance of species in the water body is avoided, and phenomena such as discontinuous electrolytic process, low electrolytic efficiency due to the cathode scale caused by traditional electrochemical electrolysis and the like are avoided, thereby ensuring stable effluent quality and better purifying effect, so as to decrease water treatment costs.

The invention relates to an experimental device of the multi-transducer coordinating with a sonochemistry reaction field and a working method thereof. The experimental device comprises a reactor, wherein a plurality of transducers are arranged in the reactor; the transducers are controlled by multiple sets of ultrasonic signal generators, and send out the corresponding ultrasonic waves; according to the experimental device of the multi-transducer coordinating with the sonochemistry reaction field and the working method thereof, provided by the invention, ultrasonic parameters can be adjusted through ways such as signal generator parameters and the like; whether the transducers work or not can be controlled by a core controller; the location and angle of a first transducer can be adjusted by a three-axis positioning device; a sound field and a sonochemistry reaction field generated by the single action or combined action of different forms of ultrasonic waves can be studied by the above changes.

A method for measuring the sound field distribution image by acousto-chemical luminescent imaging includes adding chemical luminescent reagent to water, generating cavitation in the water by the ultrasonic field to be tested, reaction of free group with said reagent to generate acousto-chemical light, converting the light signals to electric signals and then to digital signals, processing them to obtain acousto-chemical luminescent image, and directly observing the sound field distribution. Its apparatus is composed of light receiver, A/D converter, computer and software.

The invention relates to a sonochemistrical luminous tomography method for tumour, which is that after distributing of sonosensitizer in tumour group, generating active oxygen-derived free radicals by scanning point by point and sensitizing used focusing ultrasound; translating the active oxygen-derived free radicals generated during sonosensitizing process real time and directly by chemical luminous agents into photons and radiating out; based on that, simulating the imaging of tumour group by optics detection technique. The apparatus comprises ultrasound producing groupware, light receiving groupware, A/D converter, triaxiality scanning device and computer; wherein ultrasound producing groupware and triaxiality scanning device link to computer, light receiving groupware and A/D converter link to computer in turn. The invention combines strong penetrating ability of focusing ultrasound to body and the advantages of high sensitivity and intactness of optics imaging, brings no radioactive damage to organism.

The invention discloses a preparation method of a dual-layer wave absorbing material adopting a hollow structure, and belongs to the technical field of preparation of the wave absorbing material. The dual-layer wave absorbing material adopting the hollow structure, disclosed by the invention, is prepared through the following steps: generating ammonia and acetic aldehyde through a hexamethylene tetramine reaction; after the ammonia is evaporated to form bubbles, enabling the bubbles to become a polymerization center under the combined action of the stickiness of ethanediol and the adsorption of polyvinylpyrrolidone, and then enabling unstable crystal nanometer particles to be gathered around a gas-liquid interface through the minimization of interface energy and the driving of the interaction of magnetic dipoles; when surface energy and binding energy are balanced, enabling the bubbles to stay in an aggregate to form a hollow ball structure, so as to prepare hollow ferroferric oxide; performing ball milling and blending on the hollow ferroferric oxide and attapulgite clay powder, and plating a layer of nickel-cobalt on composite powder by a sonochemistry plating method, so that the dual-layer wave absorbing material adopting the hollow structure is obtained. Examples prove that the absorption width of wave frequency and the position of absorption peaks can be changed through the wave absorbing material, besides, the preparation method is simple and easy to operate, and the wave absorbing material has excellent wave absorbing properties.

A method of regulating at least one cellular process in one or more cells by exposing the one or more cells to ultrasound, characterised in that the method comprises either (a) introducing into the one or more cells a construct comprising a regulatory transgene capable of regulating the at least one cellular process operably linked to a light-inducible control sequence and (b) inducing the expression of the regulatory transgene using sonoluminescence (SL) or sonochemiluminescence (SCL); or (i) contacting the one or more cells with one or more light-sensitive proteins capable of regulating the at least one cellular process and (ii) regulating the function of the one or more proteins using sonoluminescence or sonochemiluminescence.

The invention discloses yttrium oxide nano powder and a preparing method of a nano structure. A sonochemistry method in which natural asparagus gel is used as a surface active agent is adopted to prepare the yttrium oxide nano powder. Ultrasonic resonance bubbles are utilized to form nucleation, as the bubbles break, a common chemical bond can be destroyed, hydrophilic group surfaces of organisms in the asparagus gel can be attached to Y(OH)3 precipitation, and assist in crystallization of yttrium oxide during high temperature calcination and before organic groups are evaporated to be separated. In this way, by changing conditions of the ultrasound time, the ultrasound frequency, the PH value and the amount of the asparagus gel, and different chemical bonds are destroyed, which finally results in different shapes and microstructures. Different requirements of different industries for shapes and structures of the yttrium oxide nano powder are met, and a preparing method in which shapes are controllable, and the yttrium oxide nano powder of different nano structures can be prepared in the same method is provided.

The invention discloses a preparation method of a derivative for detecting the blood concentration of valproic acid by using a high performance liquid chromatograph, the method comprising the following steps: putting a catalyst and a valproic acid derivatization reagent into a closed glass tube, and preparing the derivative by using a one-pot synthesis method. According to the preparation method of the derivative for detecting the blood concentration of valproic acid by using the high performance liquid chromatograph, molecular movement is accelerated, derivatization reaction is promoted, reaction efficiency is improved, and reaction time is shortened by using an ultrasonic chemical principle; a one-pot boiling method is adopted, so that the post-treatment steps of the derivatization reaction are simplified, evaporation drying or nitrogen blow-drying and mobile phase dissolution sample injection are not needed, and the loss of a derivatization product caused by volatilization or nitrogen blow-drying can be reduced; after derivatization is finished, ice bath cooling is adopted to absorb a lower-layer solution for direct sample introduction, the post-treatment method is simple and convenient, meanwhile, errors are reduced, and an efficient, rapid and convenient derivatization method is provided for determining the valproic acid blood concentration through high performance liquidchromatography.