Core-shell type amorphous metal oxide adsorbent, as well as preparation method and application thereof

An amorphous alloy, amorphous technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of difficult sedimentation, easy deactivation and condensation, difficult recovery and reuse, etc. Simple process, easy sedimentation and separation effect

Active Publication Date: 2015-05-27
HARBIN INST OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the nanometer metal oxide adsorbent prepared by the existing method is easy to deactivate and aggregate in aqueous solution, is not easy to settle, and is difficult to recycle and reuse, and to provide a core-shell type amorphous metal Oxide adsorbent and its preparation method and application

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  • Core-shell type amorphous metal oxide adsorbent, as well as preparation method and application thereof
  • Core-shell type amorphous metal oxide adsorbent, as well as preparation method and application thereof
  • Core-shell type amorphous metal oxide adsorbent, as well as preparation method and application thereof

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specific Embodiment approach 1

[0012] Specific embodiment 1: In this embodiment, the core-shell amorphous metal oxide adsorbent is prepared by hydrothermal method from amorphous alloy powder with a particle size of 3 μm to 50 μm, and the particle size is 3 μm to 50 μm. The chemical formula of amorphous alloy powder is Ti 40～50 Cu 40～45 Zr 5～10 Ni 0.5～5 sn 0.5～5 .

[0013] Alloys are materials with metallic properties formed by two or more metals or metals and nonmetals. In recent years, many researchers have synthesized a variety of functional nanomaterials by using alloys as raw materials and combining chemical reaction methods. Among many alloy systems, Ti-based alloys have the advantages of high specific strength, good corrosion resistance, and good biocompatibility. In addition, compared with the preparation of metal oxide adsorbents from traditional inorganic metal salts or organometallic compounds, due to the higher density of Ti alloys (about 4-5 g / cm3), this embodiment designs the composition ...

specific Embodiment approach 2

[0020] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the chemical formula of the amorphous alloy powder with a particle size of 3 μm to 50 μm is Ti 42.5 Cu 40 Zr 10 Ni 5 sn 2.5 . Others are the same as the first embodiment.

specific Embodiment approach 3

[0021]Specific embodiment three: This embodiment is a preparation method of a core-shell amorphous metal oxide adsorbent, which is specifically completed according to the following steps: 1. Put sodium hydroxide and water into a closed reaction container, and the The mass ratio of sodium hydroxide to water is (0.01 ~ 0.25): 1, and then add amorphous alloy powder with a particle size of 3 μm to 50 μm for reaction, and the amorphous alloy powder with a particle size of 3 μm to 50 μm The mass ratio to water is (0.01-0.5): 1, react at a temperature of 140-180°C and a pressure of 0.1MPa-5MPa for 0.5h-50h, and then naturally cool to room temperature to obtain a reaction product; 2. To react Add water to the product, adjust the pH value of the reaction product to neutral, then stand and separate to obtain a solid product, and dry the solid product to a constant weight to obtain a core-shell amorphous metal oxide adsorbent; in step 1 The chemical formula of the amorphous alloy powder ...

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Abstract

The invention discloses a core-shell type amorphous metal oxide adsorbent, as well as a preparation method and an application thereof and relates to the amorphous metal oxide adsorbent, as well as the preparation method and the application thereof. The invention aims at solving the problems that the nano-metal oxide adsorbent prepared by an existing method is easy to inactivate and agglomerate in a water solution, less prone to sedimentation and difficult to recover and reutilize. The core-shell type amorphous metal oxide adsorbent is prepared from amorphous alloy powder through a hydrothermal method. The method comprises the following steps: 1) placing sodium hydroxide and water into a closed reaction container, then adding the amorphous alloy powder for reaction, and then naturally cooling to room temperature to obtain a reaction product; and 2) regulating the pH value to neutrality, then standing and separating to obtain a solid product, and drying the solid product till constant weight to obtain the core-shell type amorphous metal oxide adsorbent. The core-shell type amorphous metal oxide adsorbent can be used as a toxic Cr<6+> ion adsorbent for adsorbing toxic Cr<6+> ions in water.

Description

technical field [0001] The invention relates to an amorphous metal oxide adsorbent, a preparation method and application thereof. Background technique [0002] With the development of science and technology, environmental problems have become increasingly prominent. Effective treatment of environmental pollutants, air and water purification and other environmental problems are major challenges faced by human beings, and have become research hotspots that people pay attention to. As we all know, when the size of the material reaches the nanometer level, due to the small size effect, quantum effect, surface and interface effect, and macroscopic quantum tunneling effect, the material will exhibit unique functional properties. Therefore, through nanomaterial design and controlled synthesis methods, new functions and new properties of nanomaterials can be designed and developed, which makes it possible for nanomaterials to be used to solve environmental problems. Among many nano...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06C02F101/22
Inventor 王东君沈军李中华安勇良
Owner HARBIN INST OF TECH
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