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10 Jul

The oriented porous structure enhances Titanium suboxide photocatalytic performance

Using abundant water resources on the earth as raw materials and free solar energy as energy sources, photocatalytic decomposition of aquatic hydrogen is a promising hydrogen production technology. One research focus of photocatalytic hydrogen production is to find a suitable catalyst that can effectively absorb sunlight and produce enough support to participate in the electrochemical REDOX reaction of water decomposition. Titanium dioxide is a typical N-type semiconductor, which has the advantages of non-toxicity, good weather resistance and low cost, [...]

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13 Jun

Study on nanometer nickel hydroxide electrode materials

Nickel metal hydride batteries (MH-Ni) with high specific energy and excellent performance are widely used in electronics, communications, computers and other industries, and will also be widely used in the field of electric vehicles. As a positive active substance, the performance of nickel hydroxide is the key to determine the overall performance of MH-Ni batteries. In this paper, nanometer nickel hydroxide is studied comprehensively from the following four aspects: First, nanometer nickel hydroxide is prepared by grinding micron grade [...]

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05 Jun

Adsorption of low concentration phosphate in water by lanthanum hydroxide and natural zeolite

Zeolite is a porous aluminosilicate crystal with skeleton structure, which has high cation exchange ability. In recent years, the use of cation exchange capacity of zeolite to remove ammonia nitrogen from water has attracted the attention of many researchers. The surface of zeolite aluminosilicate skeleton is negatively charged, so the adsorption ability of zeolite to phosphoric acid anion in water is very poor. In order to improve the adsorption capacity of phosphate in water, it is necessary to properly [...]

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15 May

Production process of copper pyrophosphate

Sodium pyrophosphate reacts with copper sulfate or copper chloride to produce copper pyrophosphate. Na4P207+2CuS04 Cu2P207+2Na2S04 Na4P207+ 2cucL2-Cu2p207 +4NaCl Sodium pyrophosphate (95%) 950 Copper sulfate (93%) 1450 Using industrial hydrated disodium phosphate as raw material, it is heated and dehydrated at low temperature, and then slowly heated to about 100℃, so that it removes all the crystalline water and becomes anhydrous salt. Ground anhydrous salt, and then put it in a high temperature furnace, hot at 200-300℃, to produce sodium pyrophosphate. The reaction is complete when [...]

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04 May

Membrane electrode catalyst carrier Ti4O7 for fuel cell reactor

(1) Preparation of Ti4O7: As a catalyst support, it needs to have a large specific surface area, and the difficulty lies in this. The specific surface area of Ti4O7 synthesized by single step method is very small. The specific surface area of multistep synthesis was 140m2/g. (2) Catalyst performance: The activity and durability of Ti4O7 supported catalyst is better than that of Pt/C catalyst. After the formation of Ru-Pt core-shell structure, the Ti4O7 supported catalyst not only has CO resistance, [...]

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29 Apr

A spongy porous Fe-doped modified potassium vanadium phosphate

As the society attaches great importance to green and environmental protection, new electrochemical energy storage technologies are constantly updated. Lithium-ion batteries, due to their high energy density, high safety, light weight and long life, occupy a large market share in electrochemical energy storage technologies, such as new energy vehicles, mobile phones and power tools. However, with the widespread use of lithium-ion batteries, its disadvantages are becoming more and more apparent Due to the scarcity of lithium resources, high price and low [...]

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16 Apr

Molybdenum disulfide nanoflower-MoS2 nanosheet

The layered MoS2 nanoflower samples with the size of 1-2 microns were successfully prepared by hydrothermal synthesis. Each MoS2 nanoflower was formed by a large number of intersecting MoS2 nanoflakes in a regular center polymerization. In addition, we also used a simple two-step hydrothermal method to prepare high purity heterogeneous nanoflowers,MoS2 nanoflowers uniformly covered with Sn02 nanoparticles -MoS2@SnO2 heterogeneous nanoflowers, which enriched the heterogeneous structure system based on MoS2. The lattices and morphologies of MoS2 nanoflowers and MoS2@SnO2 heterogeneous nanoflowers [...]

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04 Apr

Preparation method of nanometer molybdenum trioxide

1. Hydrothermal synthesis method in the closed reactor, the 4∶1(molar ratio) molybdic acid and laurel gum reaction to molybdic acid molecules on the technology of amine, reaction temperature is 150℃, time is 1 day, at this time the light yellow molybdic amine compound turned white, cold to room temperature, aging 48h after the release of products, and then with 33% nitric acid aqueous solution, at room temperature 48h, remove the amine combination The pure nanometer molybdenum trioxide fiber was [...]

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24 Mar

Method for preparing zirconium silicide nanomaterials

Zirconium silicide (zrsi), as a zirconium-silicon intermetallic compound, is a kind of high temperature ceramic material with high hardness, high melting point, high conductivity, high thermal conductivity and excellent thermal shock resistance. In view of these superior physical and chemical properties of zirconium-silicon intermetallic compounds, it is a kind of structural materials or new engineering materials that can be applied to high temperature corrosive media. At present, The method of preparation of zirconium silicide is mainly with silicon thermal reduction [...]

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20 Mar

Nano titanium diboride reinforced aluminum alloy composites

Nano-titanium diboride particle reinforced aluminum matrix composites, TiB2p/Al has excellent mechanical and physical properties, such as high specific strength and specific modulus, wear resistance, fatigue resistance, low density, good dimensional stability, etc. Moreover, compared with continuous fiber reinforced composite materials, it has a significant low-cost advantage. The materials are isotropic, easy to process, flexible and diverse preparation, and can be manufactured by traditional equipment for secondary processing, such as extrusion, calendering and forging. Nano-titanium diboride particle reinforced aluminum matrix composite [...]

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