43 results about "Proton transport" patented technology

Compact particle selection and collimation devices are disclosed for delivering beams of protons with desired energy spectra. These devices are useful with laser-accelerated proton therapy systems, in which the initial protons have broad energy and angular distributions. Superconducting magnet systems produce a desired magnetic field configuration to spread the protons with different energies and emitting angles for particle selection. The simulation of proton transport in the presence of the magnetic field shows that the selected protons are successfully refocused on the beam axis after passing through the magnetic field with the optimal magnet system. Dose distributions are also provided using Monte Carlo simulations of the laser-accelerated proton beams for radiation therapy applications.

Provided is a battery comprising a first compartment, a second compartment and a barrier separating the first and second compartments, wherein the barrier comprises a proton transporting moiety.

A self-moisturizing polymer electrolyte membrane (PEM) composition, a membrane-electrode assembly, and a fuel cell. The PEM composition comprises (a) a proton-conducting polymer containing a detachable hydrogen ion and a counter-ion bonded to the polymer; and (b) a deliquescent material for keeping the membrane wet and for detaching the hydrogen ion to facilitate proton transport in the membrane. Alternatively, the deliquescent material may be strategically located on the gas flow field channels, gas-diffusion electrode or backing layers, and/or electro-catalyst layers. A preferred PEM polymer is poly(perfluoro sulfonic acid). This self-moisturizing PEM obviates the need to have a pre-humidifying structure or a complex flow field design in a fuel cell.

The present invention relates to functionalized polymers including a poly(phenylene) structure. In some embodiments, the polymers and copolymers of the invention include a highly localized concentration of acidic moieties, which facilitate proton transport and conduction through networks formed from these polymers. In addition, the polymers can include functional moieties, such as electron-withdrawing moieties, to protect the polymeric backbone, thereby extending its durability. Such enhanced proton transport and durability can be beneficial for any high performance platform that employs proton exchange polymeric membranes, such as in fuel cells or flow batteries.

The invention relates to a preparation method of an antibiotics self-powered aptamer sensor. The preparation method is used for detecting antibiotics according to the change of output property of an EBFC (enzymatic biofuel cell). The design of the self-powered sensing is mainly focused on an anode of the EBFC, a DNA (deoxyribonucleic acid) conjugate is modified to the surface of the anode, the steric hinerance influences the proton transport of glucose of the anode fuel, and the open-loop voltage is lower. When the target antibiotics exists, the aptamer modified to the surface of the anode is used for identifying the antibiotics medicine, and the DNA conjugate is disengaged, so that the anode can effectively catalyze the oxidizing of the glucose, the open-loop voltage of the EBFC is increased, the change value of open-loop voltage forms a proportional relationship with the concentration of the antibiotics, so that the antibiotics medicine is detected. The preparation method has the advantages that the additional power supply equipment is not needed in the sensor detection process, the cost is low, the anti-interference ability is strong, and the sensor has high selectivity by using the aptamer identifying function. The antibiotics self-powered aptamer sensor can be used for realizing the simple, quick, sensitive and efficient detection of the antibiotics medicine.

The invention relates to a high-temperature proton exchange membrane for fuel cells and a preparation method thereof, belonging to the technical field of fuel cells. The matrix of the high-temperature proton exchange membrane provided by the invention is composed of acidified organic polymers and nano-inorganic particles uniformly dispersed in the polymer matrix, and the surface of the inorganic particles is coated with a polymer capable of solvating protons; wherein the acidified The organic polymer is used as a proton donor, and the polymer coated with ether oxygen group on the surface of the inorganic particle has a solvation effect on the proton to generate free protons, and the acidified organic polymer and the inorganic particle coated with the ether oxygen polymer are mutually incompatible. Compatible, the formed phase interface provides a convenient channel for proton transport. This high-temperature proton exchange membrane for fuel cells does not depend on the existence of water under high-temperature conditions and has high proton conductivity, excellent alcohol resistance performance, mechanical properties, and low cost, and provides an industrially practical membrane for the fuel cell field. permanent proton exchange membrane.

The invention discloses a cobalt-coated carbon-supported platinum catalyst Pt/(C @ Co) with proton transport function and a preparation method thereof. The method comprises the following steps: (1) soaking graphene with nitrogen source or sulfur source ionic liquid to obtain heteroatom-doped carbon black; (2) The core-shell structure of C @ Co coated on the surface of heteroatom doped carbon blackwas prepared by electroless plating. 3) polymerize that obtained C @ Co core-shell structure with sulfonyl monome, tetrafluoroethylene, assistant, initiator and organic solvent, and winding an appropriate amount of perfluoroSO2F polymer on the sphere of C @ Co; (4) hydrolyzing the obtained product to convert the SO2F group into SO3-Na +/K + ion exchange group; 5) mix that obtained product with aplatinum precursor solution, wat and ethylene glycol, and treating with ultrasonic wave; 6, place that obtained mix solution in a microwave reactor and heating the reaction; 7) demulsify that obtainedcolloidal system aft the reaction is finished and filtering; (8) Post-treatment.

The invention belongs to the field of preparation of ionic hydrogen bond organic framework materials, and particularly discloses an ionic hydrogen bond organic framework material with proton conduction performance, the chemical formula of the ionic hydrogen bond organic framework material is {TPE-SO3H. 2 (DBD). 2 (DMF). 4 (H2O)} n, n is a positive integer, TPE-SO3H is 1, 1, 2, 2-tetrasulfonic acidphenyl ethylene, DBD is (C5NH4NH2) 22+, and DMF is N, N '-dimethylformamide. The structural unit belongs to a triclinic system, the space group is P-1, the molecular formula is C52H62N10O18S4, the cell parameters are as follows: alpha = 102.789 degrees, beta = 99.968 degrees and gamma = 112.169 degrees, each repetitive unit comprises four water molecules and two DMF molecules, two DBD molecules and one TPE-SO3H molecule, and amino groups on the DBD molecules and sulfonate groups on the TPE-SO3H molecule form a one-dimensional hydrogen bond network with water molecules. The material has good thermal stability, and has good performance for proton transportation. The invention discloses the preparation method of the material, the synthetic raw materials are easy to obtain, and the preparation process is simple. The ionic hydrogen bond organic framework material disclosed by the invention can be used as a proton conducting material and has a very good application prospect.

Internal polar and ionizable groups are essential for enzymatic catalysis, proton transport, redox reactions, and many other functional properties of proteins. To engineer novel enzymes or to modify the function of existing ones, and to build switches that can be used to modify the stability of proteins in response to changes in pH, it is necessary to introduce polar or ionizable groups or to modify the properties of existing ones. However, internal polar and ionizable groups usually destabilize proteins. The disclosure provides new methods that allow the introduction of polar and ionizable groups into the interior of proteins, as well as new methods for improving the accuracy of pK_a of an internal amino acid of a protein, and methods for mapping the folding free energy landscape of a protein.

The invention provides a composite high-temperature proton exchange membrane as well as preparation and application thereof. The composite high-temperature proton exchange membrane is an H3PO4 adsorbed PBI-SiO2 composite membrane, wherein SiO2 is acid modified ordered mesoporous SiO2, the mass content of SiO2 in the composite membrane is 0.1%-30%, and the mass ratio of acid to ordered mesoporous SiO2 is 0.001:1-0.2:1; the mass content of H3PO4 in the PBI-SiO2 composite high-temperature proton exchange membrane after H3PO4 adsorption is 70%-98%. Compared with the prior art, acid modified ordered mesoporous SiO2 contains a large number of hydrogen bonds, can form stronger intermolecular force with PBI, and has better dispersibility in hybrid membranes; acid modified ordered mesoporous SiO2 has ordered proton transport channels, and proton conductivity under the low humidity condition is improved; the prepared composite membrane has relatively high proton conductivity and good mechanicalproperties, and is the high-temperature proton exchange membrane with excellent comprehensive properties.

The invention relates to a proton enhanced transport forward osmosis membrane, a preparation method and application thereof, and belongs to the technical field of osmosis membrane materials. The invention provides a preparation method of a proton enhanced transport forward osmosis membrane. The method comprises the following steps: respectively introducing metal organic framework nanoparticles into a support base membrane prepared by a phase inversion method and/or a salt intercepting layer prepared by an interfacial polymerization method so as to prepare a composite forward osmosis membrane with efficient proton transport performance. According to the invention, metal organic framework nanoparticles have ultrahigh specific surface area, high porosity and easiness in functionalization, and have good compatibility with a membrane so as to provide extra abundant proton transmission channels for the forward osmosis membrane, so that the prepared self-supporting nano-composite forward osmosis membrane has excellent ion exchange capacity, conductivity and proton transmission flux, and can effectively improve the pollutant degradation efficiency, the electricity generation amount and the water yield when being applied to an osmosis bioelectrochemical system.

The invention discloses a composite cathode material of a medium/low-temperature proton transport solid oxide fuel cell, belonging to the field of fuel cells. The composite cathode material disclosed by the invention is characterized in that the novel cathode material is obtained by mutual compounding of an oxygen ion-electron conductor phase with A-site deficiency, namely Nd1.95NiO4+delta and a proton conductor phase, namely BaZr0.1Ce0.7Y0.1Yb0.1O3-delta (BZCYYb), the chemical formula of the composite cathode material is Nd1. 95NiO4+delta-BaZr0.1Ce0.7Y0.1Yb0.1O3-delta, and the mixing weight ratio of the two phases is (3: 7)-(7: 3). The composite cathode material disclosed by the invention can be used for the medium/low-temperature proton transport solid oxide fuel cell, and the two phases in the composite material have good chemical compatibility. The compounding of the Nd1.95NiO4+delta and the BaZr0.1Ce0.7Y0.1Yb0.1O3-delta can ensure that the composite cathode material has oxygen ion, proton and electron conduction properties, the three-phase interface is expanded, and the electrochemical performances are good.

A high-temperature proton transport composite membrane for fuel cells is prepared by the following method: compounding ammonium polyphosphate and/or ammonium polyphosphate complex with sulfonated polyaryletherketone (sulfone) polymer solution to form proton transport Composite membrane; the mass concentration of ammonium polyphosphate or ammonium polyphosphate compound in the polymer solution is 10-95%; the polymer solution of sulfonated polyaryletherketone (sulfone) is sulfonated polyaryletherketone (sulfone) The polymer is dissolved in a polar solvent, and the volume concentration is 5-85%. The invention also provides a preparation method. The proton transport composite membrane involved in the present invention has a working temperature of 150-350°C, is a high-temperature proton transport composite membrane with high proton conductivity, good mechanical strength, alcohol resistance and processability, and is suitable for hydrogen High temperature proton transport membrane fuel cell with alcohol as fuel.

A molecular motor biosensor kit for detecting salmonella belongs to the field of food microorganism rapid detection, and mainly solves the problem of a long period (5-6 days) for traditional detection methods. The core technology of the invention is that since F0F1-ATP synthase can rotate rapidly, coupling between catalytic sites and proton transport is established through rotation by using the F0F1-ATPase molecular motor biosensor on a chromatophore. Firstly, an invA probe is connected with an epsilon subunit of the ATP synthase; a sample to be detected and a negative control are respectively combined with the biosensor; the ATP yield after the catalysis of ATP synthesis for 30 min is compared; the amount of ATP synthesis can be measured by the H+ amount in the environment, and the amount of H+ can be obtained by fluorescence intensity reflected by H-DHPE. The kit of the invention can rapidly and sensitively detect salmonella in samples to be detected with high throughput.

The current disclosure provides a method of fabricating a perfluorosulfonated ionomer membrane with a surface having an array of a plurality of fine pillars. The pillars are fabricated by a rapid deformation of the membrane via thermal imprint lithography under appropriate temperatures and pressures. This fabrication process induces the molecular alignment of a polymer in the pillars. As a result, the main chain via C—F and C—C bonds in the pillar is controlled to reduce the proton transport resistance in the pillars. Therefore, the fuel cells utilizing the invented membrane show improved performance under low humidity.