9 results about "Double oxide" patented technology

Structures including an access transistor and a resistive memory element, and methods of forming such structures. The structure comprises an access transistor including a semiconductor layer, a first source / drain region, a second source / drain region, a gate dielectric layer on the semiconductor layer, and a gate electrode overlapped with the gate dielectric layer. The gate dielectric layer has a first portion with a first thickness adjacent to the first source / drain region and a second portion with a second thickness adjacent to the second source / drain region, and the first thickness is greater than the second thickness. The structure further comprises a resistive memory element that is coupled to the first source / drain region of the access transistor.

The invention discloses a preparation method of a nitrogen-sulfur co-doped modified layered double-oxide material, and belongs to the technical field of water treatment.The preparation method comprises the following steps that 1, a carbon felt substrate is pretreated and dried, the treated substrate is placed in a uniform solution containing Fe (NO3) 3.9 H2O and Ni (NO3) 2.6 H2O to be subjected to a hydrothermal reaction, and after the hydrothermal reaction is completed, the substrate is taken out and dried; carrying out ultrasonic treatment and washing with deionized water to obtain a NiFe-LDH precursor; and (2) drying the obtained precursor, dipping the dried precursor in an ethanol solution of ammonium persulfate, and then carrying out high-temperature carbonization treatment in an inert gas atmosphere to prepare the nitrogen-sulfur co-doped modified nickel-iron layered double-oxide material. The difference of nitrogen and sulfur in atomic radius, electronegativity and doping form enables the co-doped structure to effectively regulate and control the electronic structure of the material: nitrogen doping improves conductivity, and sulfur doping promotes exposure and stability of active sites. The co-doping synergistically optimizes the electronic structure and catalytic activity of the material, so that the material has excellent capacitive deionization removal performance and electrocatalytic activity at the same time.

The invention discloses a preparation method of an eprinomectin intermediate oxide. The eprinomectin intermediate oxide is obtained by taking an abamectin hydroxyl protection substance as a starting raw material through oxidation reaction and post-treatment. According to the invention, active manganese dioxide is adopted as an oxidizing reagent, the operation is simple, the generation of peculiar smell of a by-product dimethyl sulfide during dimethyl sulfoxide oxidation in the prior art is avoided, the yield reaches 98.0% or more, the purity of the oxide can reach 95.0% or more, and the content of double-oxide impurities can be controlled to be 0.2% or less.

A method of preparing a Calcium-Aluminium-layered double oxide (CaAl-LDO)-doped biochar composite is provided. The method comprising providing a solution containing calcium nitrate and aluminium nitrate in a molar ratio of calcium nitrate to aluminium nitrate is 3:1, providing a pomace, providing an alkaline solution, mixing the pomace, the alkaline solution, and the solution containing calcium nitrate and aluminium nitrate, thereby to form a precipitate Calcium-Aluminium-layered double hydroxide (CaAL-LDH) on the pomace, and pyrolyzing or calcinating the mixture to prepare CaAL LDO-doped biochar composite. The pomace may be a natural pomace or pyrolyzed pomace. The (CaAl-LDO)-doped biochar composite may be used for removing phosphate-based impurities from water. The (CaAl-LDO)-doped biochar composite may adsorb up to 98% of phosphates from water.

A lactic acid removal device includes a culture solution for cells or microorganisms; a vessel that contains the culture solution; and a lactic acid adsorbent. The lactic acid adsorbent includes at least one of a layered double hydroxide that contains multiple metal hydroxide layers and also contains anions and water molecules held between the metal hydroxide layers, or a layered double oxide that is an oxide of a layered double hydroxide. The metal hydroxide layers contain divalent metal ions M2+ and trivalent metal ions M3+, mole ratio (M2+ / M3+) of the divalent metal ions M2+ to the trivalent metal ions M3+ in a layered double hydroxide is 1.9 to 3.6, and the mole ratio in a layered double oxide is 1.8 to 3.6.

Perovskite solar cells with a dual oxide moisture barrier deposited by atomic layer deposition are described, where a first oxide layer is deposited over the solar cell with a water oxidizer and a second oxide layer is deposited over the first oxide layer with an ozone oxidizer.

This disclosure relates to a reflective semiconductor device with a mirror element having a double oxide layer above an aluminum layer and related methods. A reflective semiconductor device includes an integrated circuit (IC) structure and a pair of mirror elements located above the IC structure. The pair of mirror elements is separated by trenches. Each mirror element includes a mirror layer, for example aluminum, located on the IC structure and a low-temperature oxide (LTO) layer located on the mirror layer. A high-temperature oxide (HTO) layer is located above the pair of mirror elements and fills the trenches. A liquid crystal layer located above the mirror elements provides a liquid crystal on semiconductor (LCOS) device. Without using a dedicated alloy, the double oxide layer prevents creep and / or coalescence of the mirror layer during HTO layer formation and provides a suitable surface for the LCOS assembly.

The invention discloses an aerobic stable layered double-oxide catalyst for CO-SCR denitration as well as a preparation method and application of the aerobic stable layered double-oxide catalyst, and belongs to the technical field of CO selective catalytic reduction of nitrogen oxides (CO-SCR). The preparation method comprises the following steps: carrying out hydrothermal reaction on Fe (NO3) 3.9 H2O, C4H6MgO4. 4H2O and urea to obtain a FeMg-LDH precursor, then adding Cu (NO3) 2.3 H2O and Cr (NO3) 3.9 H2O, stirring, and roasting to obtain the Cu7.5-Cr7.2 / LDO catalyst. The catalyst disclosed by the invention has excellent wide temperature range stability and sintering resistance under an aerobic condition, and stable and efficient NOx purification can be realized in a wide temperature range of 200-800 DEG C. The catalyst has the advantages of being simple in preparation process, low in cost, environmentally friendly and the like, is suitable for efficient wide-temperature-zone removal of NOx in oxygen-containing industrial flue gas, and has wide industrial application prospects.

This invention relates to the field of biomedical materials technology, specifically to a biomedical ceramic and its preparation method, comprising a base phase and a doped phase. The base phase consists of hydroxyapatite and β-tricalcium phosphate, and the doped phase consists of yttrium oxide and silicon oxide. The mass ratio of hydroxyapatite to β-tricalcium phosphate is 10:90 to 70:30. The amount of yttrium oxide added is 0.1 to 4 parts by weight of the total mass of the base phase, and the amount of silicon oxide added is 0.1 to 6 parts by weight of the total mass of the base phase. This invention, through the system design of a two-phase base ceramic and a two-oxide doped system, compensates for the performance defects of single bioceramics at the raw material level, enabling the material to possess stable mechanical properties, a suitable degradation rate, and excellent bioactivity, thus meeting the physiological needs of human bone tissue repair. Furthermore, this invention employs a specific powder pretreatment process, which can effectively remove impurities from the raw materials, improve the purity and mixing uniformity of the raw materials, and lay a good foundation for subsequent molding and sintering.