Biosynthesis method of magnetic Pd nanocomposite material

A nanocomposite material and biosynthesis technology, applied in the field of biosynthesis nanomaterials, can solve the problems of short reaction time and harsh reaction conditions, and achieve the effect of short reaction time, simple operation and mild conditions

Inactive Publication Date: 2014-04-09
DALIAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0004] The present invention aims at the harsh reaction conditions of synthesizing metal nanomaterials, in order to solve the problems of improving catalytic activity and material recycling, and provides a biosynthesis method of Pd nanocomposite materials with magnetic properties, which has mild reaction conditions, short time and high catalytic activity of the materials. High, recyclable and other characteristics

Method used

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  • Biosynthesis method of magnetic Pd nanocomposite material
  • Biosynthesis method of magnetic Pd nanocomposite material
  • Biosynthesis method of magnetic Pd nanocomposite material

Examples

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Effect test

Embodiment 1

[0025] Magnetic Fe 3 o 4 / Pd nanocomposite preparation:

[0026] (1) Cultivation of Shewanella oneidensis MR-1: This method uses S.oneidensis MR-1 as the microbial strain for synthesizing magnetic Pd nanocomposites; (Hydrated) metal oxides, fast growth, can enter the stable growth period within 12 hours; the strain uses Luria-Bertani medium, the formula of the medium is: NaCl10g / L, peptone 10g / L, yeast extract powder 5g / L, and the final pH was adjusted to 7.0 with NaOH. Before using the medium, use an autoclave to sterilize it at 121°C for 20 minutes; S. oneidensis MR-1 was inoculated into Luria-Bertani medium in a sterile operating table at an inoculation ratio of 1:100; after inoculation, the The culture medium was cultured in an incubator at 30° C. and 150 rpm for 12 hours to obtain a S. oneidensis MR-1 bacterial liquid for use.

[0027] (2) Preparation of β-FeOOH: β-FeOOH is used to synthesize Fe from S.oneidensis MR-13 o 4 The precursor of 10mol / L NaOH solution was ...

Embodiment 2

[0038] Magnetic Fe 3 o 4 / Pd / Au nanocomposite preparation:

[0039] (1) Cultivation of Shewanella oneidensis MR-1: This method uses S.oneidensis MR-1 as the microbial strain for synthesizing magnetic Pd nanocomposites; (Hydrated) metal oxides, fast growth, can enter the stable growth period within 12 hours; the strain uses Luria-Bertani medium, the formula of the medium is: NaCl10g / L, peptone 10g / L, yeast extract powder 5g / L, and the final pH was adjusted to 7.0 with NaOH. Before using the medium, use an autoclave to sterilize it at 121°C for 20 minutes; S. oneidensis MR-1 was inoculated into Luria-Bertani medium in a sterile operating table at an inoculation ratio of 1:100; after inoculation, the The culture medium was cultured in an incubator at 30° C. and 150 rpm for 12 hours to obtain a S. oneidensis MR-1 bacterial liquid for use.

[0040] (2) Preparation of β-FeOOH: β-FeOOH is used to synthesize Fe from S.oneidensis MR-1 3 o 4 The precursor of 10mol / L NaOH solution...

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Abstract

The invention discloses a biosynthesis method of a magnetic Pd nanocomposite material and belongs to the field of nano-material bio-preparation. The biosynthesis method comprises that biological magnetic nano-particles are synthesized by a reaction of Shewanella oneidensis MR-1 and beta-FeOOH; and the biological magnetic nano-particles, Na2PdCl4 and AuCl3.HCl.4H2O are synthesized into the magnetic Pd nanocomposite material at a normal temperature. The biosynthesis method has mild reaction conditions, simple processes, short reaction time and a low cost, is a preparation technology of the green pollution-free Pd nanocomposite material, and can be used for catalytic degradation of environmental pollutants.

Description

technical field [0001] The invention relates to a biosynthesis method of a magnetic Pd nanocomposite material, belonging to the field of biosynthesis nanomaterials. Background technique [0002] Nanomaterials refer to materials with at least one dimension on the order of nanometers (1-100nm). Nanoparticles often have special physical and chemical properties due to the influence of quantum effects on material properties and structures. Its unique properties in optics, catalytic chemistry, photoelectrochemistry and electronic technology have aroused widespread interest. At present, the synthesis of nanomaterials usually requires the application of atomic, molecular and particle processing technology under vacuum or liquid phase conditions, which has high cost and low utilization rate of materials and energy. Biosynthetic nanomaterials technology, that is, biological cells use biologically active molecules to self-assemble into new nanomaterials with biomolecular components. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P1/04C12R1/01
Inventor 柳广飞托娅周集体金若菲
Owner DALIAN UNIV OF TECH
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