30results about How to "Small ionic radius" patented technology

The invention provides a multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material which is prepared by performing mixed ball milling on a main component and stabilizer, wherein the main component is ZrO2; the stabilizer is a mixture of Nb2O5, TiO2 and rare metal oxide; the mol ratio of the Nb2O5 to the TiO2 to the rare metal oxide to the ZrO2 in the multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material is x:1.5x:x:(100-3.5x), and 3<=x<=7; and the rare metal oxide is Lu2O3 or In2O3. The multi-element stable zirconium oxide corrosion-resistant thermal barrier coating material provided by the invention has excellent Na2SO4-V2O5 molten salt corrosion resistance and excellent calcium / magnesium / aluminum silicate molten glass corrosion resistance.

The invention belongs to the technical field of nanometer materials, and in particular relates to a composite material, a preparation method thereof and a quantum dot light-emitting diode. The composite material includes quantum dots and silver ethylenediamine tetraacetate combined on the surface of the quantum dots; wherein, silver ions in the silver ethylenediamine tetraacetate combine with anions on the surface of the quantum dots. In the composite material, the surface plasmon resonance effect of silver on the surface of the quantum dot can induce local electromagnetic field enhancement, thereby increasing the light output coupling of the quantum dot and the recombination luminescence rate, and the composite material is used for the quantum dot luminescence of the quantum dot light-emitting diode layer, which can effectively improve the luminous efficiency of the device, thereby improving the performance of the device.

The invention discloses a fluorine-free slagging agent. Bauxite is taken as a main raw material, silica, a fluorine-free iron-containing compound and quicklime are taken as auxiliary materials, and the content of each of effective ingredients of the bauxite is controlled within the following range through the auxiliary materials: Al2O3 accounts for 43-50% of the weight of the fluorine-free slagging agent, SiO2 accounts for 11-13% of the weight of the fluorine-free slagging agent, Fe2O3 accounts for 15-20% of the weight of the fluorine-free slagging agent and CaO accounts for 2-4% of the weight of the fluorine-free slagging agent. The fluorine-free slagging agent disclosed by the invention can solve the harm to an environment caused by a fluorine-containing slagging agent; when the fluorine-free slagging agent is actually used, no slag blocks exist in poured furnace slag, the slag flows, the furnace slag at an end point has no phenomenon of returning to dry state, the slag flow of the poured slag has no iron openwork, and when the slag is poured, the amount of molten iron entrained in the slag is small; and compared with the conventional fluorine-containing slagging agent, by using the fluorine-free slagging agent disclosed by the invention, consumed steel and iron material per ton of steel can be reduced by 4-5kg / t, and the fluorine-free slagging agent is more environment-friendly.

The invention relates to a cathode material and a preparation method thereof, particularly a moderate-temperature solid oxide fuel battery doped double-perovskit-structure cathode material and a preparation method thereof. The invention aims to solve the problem that the catalytic oxygen reduction reaction capacity of the existing solid oxide fuel battery cathode material La1-xSrxMnO3 acutely reduces under moderate temperature conditions. The moderate-temperature solid oxide fuel battery doped double-perovskit-structure cathode material is an alkaline earth element Sr-doped double-perovskite powder material, and the chemical formula is EuBa1-xSrxCo2O5+delta. The method comprises the following steps: 1. weighing materials according to the chemical formula EuBa1-xSrxCo2O5+delta; 2. grinding to obtain a mixture; and 3. calcining to obtain the alkaline earth element Sr-doped double-perovskite powder material of which the chemical formula is EuBa1-xSrxCo2O5+delta. The invention is mainly used for preparing the moderate-temperature solid oxide fuel battery doped double-perovskit-structure cathode material.

The invention belongs to the technical field of preparation of electrochemical sensors, and specifically discloses an electrochemical sensor with self-cleaning ability, including an electrode core and a new composite material based on MTOF (M refers to doped metal elements), and the composite material is attached to on the surface of the electrode core. The preparation method of the sensor is simple, time-saving, low-cost, and environmentally friendly, especially the polymer and the residue of the detected substance attached to the surface of the electrode core after detection can be oxidized under the conditions of ultraviolet light and visible light. The regeneration and self-cleaning effect of the electrochemical sensor under visible light can be achieved. The electrochemical sensing platform regenerated under visible light not only reduces the cumbersome procedures of electrode grinding and modification, but also saves the cost of modification materials, and the descaling and regeneration of electrodes prolongs the service life of electrodes. It is used for the simultaneous detection of environmental pollutants hydroquinone and catechol, with simple operation, good selectivity, high sensitivity and low detection limit.

The invention provides a multi-component stable thermal-corrosion-resistant zirconia coat material. The coat material is obtained through mixing a main agent with a stabilizer and carrying out ball milling, the main agent is ZrO2, the stabilizer is a mixture of Ta2O5, In2O3, Al2O3 and TiO2, the molar ratio of Ta2O5: In2O3: Al2O3: TiO2: ZrO2 in the multi-component stable thermal-corrosion-resistant zirconia coat material is x:x:x:x:(100-4x), and x is not greater than 4 and not lower than 2. Tetragonal phase ZrO2 is finally obtained through adopting Ta2O5, In2O3, Al2O3 and TiO2 as the stabilizer to stabilize ZrO2 in the invention. The multi-component stable thermal-corrosion-resistant zirconia coat material has an excellent Na2SO4-V2O5 molten salt corrosion resistance, and an excellent calcium magnesium aluminosilicate molten glass corrosion resistance.