CN103480858B - Silver nano particle preparation method using visible light to reduce silver ions - Google Patents
Silver nano particle preparation method using visible light to reduce silver ions Download PDFInfo
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- CN103480858B CN103480858B CN201310429586.9A CN201310429586A CN103480858B CN 103480858 B CN103480858 B CN 103480858B CN 201310429586 A CN201310429586 A CN 201310429586A CN 103480858 B CN103480858 B CN 103480858B
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Abstract
The invention discloses a silver nano particle preparation method using visible light to reduce silver ions. The method includes: adding soluble silver salt into 5-10mg/L methylene blue solution, stirring for 20-80 hours under irradiation of sunlight or artificial visible light to reduce silver ions into nano silver, centrifugally separating, and drying to obtain silver nano particles. The method is simple in process, low in cost, and the like, the prepared silver nano particles are applicable to fields such as industrial catalysis and antibacterial materials.
Description
(1) technical field:
The present invention relates to a kind of visible ray reducing metal ion and prepare nanoparticle approach, mainly relate to a kind of visible ray reduction silver ion and prepare silver nano-grain method.
(2) background technology:
Nano-Ag particles, owing to having catalysis, the performance such as antibacterial, therefore, is usually used in the numerous areas such as antiseptic and industrial catalyst.In recent years; the technology of preparing of nano-Ag particles is one of focus of the disciplinary study such as materialogy, chemistry; Chinese patent (CN101966595A) discloses a kind of nano silver preparation process; process is dissolved in water-soluble solvent or alcohols solvent by silver salt and protective agent; adjust ph, makes pH value be in the value range of needs, then adds reducing agent; heating stirring reaction 20-30 minute, obtains golden yellow Nano silver solution.Owing to needing the pH value regulating solution in Nano Silver preparation process, also will add protective agent, reducing agent etc., preparation process is comparatively loaded down with trivial details, and cost is higher.
(3) summary of the invention:
The object of the present invention is to provide a kind of visible ray to reduce silver ion and prepare nano-Ag particles method, nano-Ag particles may be used for Industrial Catalysis, the numerous areas such as antibacterial.
The object of the present invention is achieved like this:
The silver salt of solubility is joined in 5-100mg/L methylene blue solution, then under sunshine or artificial visible ray, stir 20-80 hour, can be Nano Silver by silver ion reduction, after centrifugation, drying, be prepared into silver nano-grain.
Wherein the silver salt of solubility and methylene blue solution mass ratio are 1: 20-1: 500.
Wherein the silver salt of solubility refers in silver nitrate, silver acetate, actol a kind of.
The present invention mainly utilizes the photoactivate performance of methylene blue solution, can produce active oxygen under visible light illumination, and silver ion photo-reduction is prepared silver nano-grain by active oxygen.Compared with existing Nano Silver preparation method, this kind of method has that preparation technology is simple, low cost and other advantages, the numerous areas such as can be widely used in wastewater treatment, prepared by metal nano material, has a extensive future.
(4) accompanying drawing illustrates: Fig. 1 prepares the nano-Ag particles scanning electron microscope (SEM) photograph prepared by nano-Ag particles method for a kind of visible ray reduction silver ion of the present invention.
(5) detailed description of the invention:
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment one
In beaker, add the methylene blue solution of 1 gram of silver nitrate and 500 milliliters, 5mg/L, stir 50 hours under being placed in 40W fluorescent lamp, after then centrifugation, drying, 0.12 gram of nano-Ag particles can be prepared into.Measurement result: adopt INCA type X-ray energy spectrometer to analyze the composition of particle, the nano-Ag particles pattern by company of NEC JSM-6700F scanning electron microscopic observation, result shows: as seen from Figure 1, and prepared particle is elemental silver nanoparticles, and granular size is between 5-100nm.
Embodiment two
Add in beaker in the methylene blue solution of 1 gram of silver nitrate and 20 milliliters, 100mg/L, stir 80 hours under being placed in sunshine, after then centrifugation, drying, 0.18 gram of nano-Ag particles can be prepared into.Measurement result: adopt INCA type X-ray energy spectrometer to analyze the composition of particle, the nano-Ag particles pattern by company of NEC JSM-6700F scanning electron microscopic observation, result shows: prepared particle is elemental silver nanoparticles, and granular size is between 15-150nm.
Embodiment three
Add in beaker in the methylene blue solution of 1 gram of silver nitrate and 200 milliliters, 80mg/L, be placed in the lower stirring of 100W incandescent lamp 20 hours, after then centrifugation, drying, 0.10 gram of nano-Ag particles can be prepared into.Measurement result: adopt INCA type X-ray energy spectrometer to analyze the composition of particle, the nano-Ag particles pattern by company of NEC JSM-6700F scanning electron microscopic observation, result shows: prepared particle is elemental silver nanoparticles, and granular size is between 5-90nm.
Embodiment four
Add in beaker in the methylene blue solution of 1 gram of silver acetate and 500 milliliters, 10mg/L, stir 30 hours under being placed in sunshine, after then centrifugation, drying, 0.13 gram of nano-Ag particles can be prepared into.Measurement result: adopt INCA type X-ray energy spectrometer to analyze the composition of particle, the nano-Ag particles pattern by company of NEC JSM-6700F scanning electron microscopic observation, result shows: prepared particle is elemental silver nanoparticles, and granular size is between 10-120nm.
Embodiment five
Add in beaker in the methylene blue solution of 1 gram of silver nitrate and 400 milliliters, 10mg/L, stir 60 hours under being placed in sunshine, after then centrifugation, drying, 0.17 gram of nano-Ag particles can be prepared into.Measurement result: adopt INCA type X-ray energy spectrometer to analyze the composition of particle, the nano-Ag particles pattern by company of NEC JSM-6700F scanning electron microscopic observation, result shows: prepared particle is elemental silver nanoparticles, and granular size is between 10-130nm.
Embodiment six
Add in beaker in the methylene blue solution of 1 gram of silver nitrate and 300 milliliters, 20mg/L, stir 50 hours under being placed in 100W incandescent lamp, after then centrifugation, drying, 0.15 gram of nano-Ag particles can be prepared into.Measurement result: adopt INCA type X-ray energy spectrometer to analyze the composition of particle, the nano-Ag particles pattern by company of NEC JSM-6700F scanning electron microscopic observation, result shows: prepared particle is elemental silver nanoparticles, and granular size is between 10-120nm.
Claims (3)
1. visible ray reduction silver ion prepares a silver nano-grain method, the steps include:
Soluble silver salt is joined in 5-100mg/L methylene blue solution, then under sunshine or artificial radiation of visible light, stir 20-80 hour, can be Nano Silver by silver ion reduction, after centrifugation, drying, be prepared into silver nano-grain.
2. a kind of visible ray reduction silver ion according to claim 1 prepares silver nano-grain method, and wherein soluble silver salt and methylene blue solution mass ratio are 1: 20-1: 500.
3. a kind of visible ray reduction silver ion according to claim 1 prepares silver nano-grain method, and wherein the silver salt of solubility refers to the one in silver nitrate, silver acetate, actol.
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| CN103480858B true CN103480858B (en) | 2015-05-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103894625B (en) * | 2014-04-21 | 2016-09-21 | 中国医学科学院生物医学工程研究所 | A kind of preparation method of bionic nano silver |
| CN104308184B (en) * | 2014-10-24 | 2016-08-24 | 武汉理工大学 | A kind of visible ray prepares the method for Au-Ag core-shell nano |
| CN105014093B (en) * | 2015-01-09 | 2017-07-28 | 宁波工程学院 | The preparation method of the carbon nano-particle of visible ray supporting Pt |
| CN105798328B (en) * | 2016-05-18 | 2018-01-30 | 深圳市国华光电科技有限公司 | The preparation method of silver nano-grain |
| CN113265164A (en) * | 2021-06-08 | 2021-08-17 | 绵竹市天使农业科技有限公司 | Preparation method of environment-friendly health-care coating |
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| US7135054B2 (en) * | 2001-09-26 | 2006-11-14 | Northwestern University | Nanoprisms and method of making them |
| JP2005220435A (en) * | 2003-10-22 | 2005-08-18 | Mitsuboshi Belting Ltd | Method of producing metal nanoparticle and dispersion of metal nanoparticle |
| CN1235706C (en) * | 2004-05-12 | 2006-01-11 | 北京科技大学 | Industrialized preparation technology of nm-class silver powder |
| CN101306468A (en) * | 2007-05-19 | 2008-11-19 | 浙江师范大学 | Preparation method of conductive silver composite nano particles coated by polypyrrole |
| US8852316B2 (en) * | 2008-04-28 | 2014-10-07 | Tata Chemicals Limited | Process for the preparation of silver nano particles |
| CN102581299A (en) * | 2012-02-21 | 2012-07-18 | 金淞电器(九江)有限公司 | Photochemical preparation method of noble metal nanoparticles |
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Effective date of registration: 20180426 Address after: 246123 Jinan town Industrial Park, Huaining, Anqing, Anhui Patentee after: Anhui thriving Packing Co., Ltd. Address before: 246003 College of resources and environment, Anqing Teachers College, 128 Linghu South Road, Anqing, Anhui Patentee before: Xu Zhibing |