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A sulfate-reducing bacterium capable of producing ag/agcl nanoparticles

A nanoparticle and sulfate technology, applied in the direction of bacteria, microorganism-based methods, biochemical equipment and methods, etc., can solve problems such as poor stability, large nanoparticle size, and difficult shape control

Inactive Publication Date: 2017-04-12
NORTHEAST FORESTRY UNIVERSITY
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Problems solved by technology

[0003] Ag / AgCl nanoparticles are mainly synthesized by chemical methods. The disadvantage is that strict reaction conditions and complicated experimental steps are required. The synthesized nanoparticles have large particle size, poor stability, and difficult to control the shape.

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  • A sulfate-reducing bacterium capable of producing ag/agcl nanoparticles
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  • A sulfate-reducing bacterium capable of producing ag/agcl nanoparticles

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specific Embodiment approach 1

[0014] Embodiment 1: The sulfate-reducing bacteria that can prepare Ag / AgCl nanoparticles in this embodiment is Garciella sp.wxz01, which is preserved in the General Microbiology Center (CGMCC) of China Microbial Culture Collection Management Committee, and the preservation address is Beichen, Chaoyang District, Beijing No. 3, Courtyard No. 1, the preservation date is July 3, 2014, and the preservation number is CGMCC No: 9410.

[0015] In this embodiment, Garciella sp.wxz01 is a brevibacterium with a length of 1.0-2.2 μm and a width of 0.4-0.9 μm. It has no flagella and spores. The growing colonies are black, mostly elliptical, and a small amount of star-shaped. After a period of contact with air, The colonies turned white and most of the bacteria died.

[0016] In this embodiment, Garciella sp.wxz01 is a gram-negative bacterium, negative for catalase, positive for gelatin liquefaction, negative for starch hydrolysis, positive for methyl red test and indole test, negative for...

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Abstract

A sulfate-reducing bacterium capable of preparing Ag / AgCl nanoparticles relates to a sulfate-reducing bacterium. The invention provides a sulfate-reducing bacterium, which can prepare Ag / AgCl nano particles and provide an important bacterial source for the production and application of Ag / AgCl nano particles. The strain is Garciella sp.wxz01, which is preserved in the General Microorganism Center of China Committee for the Collection of Microbial Cultures. The preservation address is No. 3, No. 1, Beichen Road, Chaoyang District, Beijing. The preservation date is July 3, 2014, and the preservation number is CGMCC No: 9410. The Garciella sp.wxz01 of the present invention grows in the improved Starkey medium containing silver nitrate and synthesizes Ag / AgCl nano particles, which provides bacterial sources for the production of Ag / AgCl nano particles. For the preparation of Ag / AgCl nanoparticles.

Description

technical field [0001] The invention relates to a strain of sulfate-reducing bacteria. Background technique [0002] AgCl is a very important photosensitive material. When the surface of AgCl is doped with metallic silver, due to its unique plasmonic effect, this composite nanoparticle has excellent visible light catalytic performance, which improves the efficiency of treating organic pollutants in wastewater and exhaust gas. . [0003] Ag / AgCl nanoparticles are mainly synthesized by chemical methods. The disadvantage is that strict reaction conditions and complicated experimental steps are required. The synthesized nanoparticles have large particle size, poor stability, and difficult to control the shape. The biological method has attracted widespread attention because of its advantages of low cost, mild conditions and environmental friendliness. [0004] It has been reported that some bacteria, fungi or plant powders can synthesize Ag / AgCl nanoparticles. The sulfate-red...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C12R1/01
CPCC12N1/205C12R2001/01
Inventor 张杰王娇王滨松刘长莉赵敏钱程盖玉杰张映熊文娄虎崔明岐于震
Owner NORTHEAST FORESTRY UNIVERSITY
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