CN103691392B - Preparation method of silicon material loaded with nanometer multi-metal - Google Patents

Preparation method of silicon material loaded with nanometer multi-metal Download PDF

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CN103691392B
CN103691392B CN201310730402.2A CN201310730402A CN103691392B CN 103691392 B CN103691392 B CN 103691392B CN 201310730402 A CN201310730402 A CN 201310730402A CN 103691392 B CN103691392 B CN 103691392B
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silicon material
silicon
metal
silicon materials
water
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CN103691392A (en
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赵建树
徐剑晖
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SHENZHEN PANGU ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD.
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Shenzhen Pangu Environmental Protection Technology Co Ltd
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Abstract

A preparation method of a silicon material loaded with a nanometer multi-metal relates to the technical field of silicon materials. The invention aims to provide a method for effectively loading the nanometer multi-metal on the silicon material. The method is characterized in that the silicon material is added into deionized water, added with at least two of organic or inorganic compounds of silver, copper, zinc and ferric, blended uniformly with the mixture, soaked for 1-24 h, and then thermally treated at 150-1200 DEG C under an inert gas, reducing gas or vacuum environment, wherein the silicon material is mesoporous silica, micropore silicon dioxide, organic functionalized silicon dioxide, a rice hull ash silicon material, silica sand or a ceramic material. The preparation method of the silicon material loaded with the nanometer multi-metal is simple in process and easy to operate, does not need to add a reducing agent, emits no waste water, and causes no pollution, and the silicon material prepared through the method can be used for treating drinking water.

Description

A kind of preparation method of the silicon materials of load nanometer multi-element metal
Technical field
The present invention relates to water process uses silicon material technology field, more particularly to a kind of silicon materials of load nanometer multi-element metal Preparation method.
Background technology
Water is Source of life, and the mankind have left aquiform stool and cannot survive.With social economy development and living standard not Disconnected to improve, requirement of the people to drinking water is also improved constantly.But, according to《Middle blue or green report》In May, 2012 reports that China there are about 300,000,000 The drinking water of rural population and 5,000 ten thousand urban populations does not also reach at present safety criterion.《The poor monitoring in Chinese countryside is reported within 2010 Accuse》Show, end 2009, the peasant household of drinking public water supply only accounts for the 32% of whole peasant households, and the peasant household in remaining direct drinking source is present Different degrees of health problem.Because rural area is without central water supply, along with pollution of waterhead and government exist caused by industrial and mining establishment The deficiency of safe drinking water propaganda strength, causes rural area Jie's waterborne disease to take place frequently.Due to rural water improvement, drinking-water, central water supply Engineering need to be gradually completing, from central water supply end or user terminal drinking water is carried out safety guarantee can yet be regarded as at present it is a kind of it is feasible, Cheap and efficient approach.
Nano metal is the metal simple-substance that particle diameter is accomplished nanoscale or submicron order, and nano metal particle diameter is mostly in 25- Between 200nm, research finds, chemical reactivity and sterilizing ability of the metal under nm regime generates qualitative leap.With As a example by nanometer silver, Nanometer Copper, the nanometer silver of extremely low content, copper can produce powerful bactericidal action, and 650 can be killed in several minutes The tens of kinds of pathogenic microorganism such as escherichia coli, gonococcuss, chlamydia trachomatiss are had strong suppression and are killed and made by various bacteria With, and drug resistance will not be produced.Animal experiment shows, even if this nanometer simple substance silver, copper usage amount reach standard dose Hundred times, animal subject is also without poisoning manifestations.Additionally, by taking nano simple substance ferrum, zinc as an example, nano zero valence iron, zinc have extremely strong Chemical reducing capability, the high high-valence state heavy metal compound of strong toxicity, dissolubility can be reduced into rapidly toxicity is low, dissolubility is low Lower valency heavy metal compound.Research finds that nano metal particle diameter is less, and specific surface area is bigger, electronation performance, sterilization Performance is stronger.However, because the metallic particles of nano-scale has higher surface energy, it is easy to assemble, so as to reduce Its reactivity and sterilizing ability, so how to keep its stability to remain relatively difficult problem.Additionally, nano metal Grain is difficult to be separated from the water and causes it to have difficulty in taking a step in the application of water process.
Silicon materials are widely used in environmental protection industry (epi), and it has, and specific surface area is big, porosity is high, adsorptivity is strong, chemical stability The advantages of good.If nanometer multi-element metal effectively can be carried on silicon materials, can both prevent the aggregation of nano metal or make Nano metal is easy to be separated from the water, again can be high so as to obtain a kind of heavy metal that can be in reduction adsorption water, micro-content organism Kill the new material of antibacterial and virus in water in effect ground.
The content of the invention
It is an object of the invention to provide a kind of method that can be effectively carried on nanometer multi-element metal on silicon materials.
For achieving the above object, the invention provides the preparation side of the silicon materials of such a load nanometer multi-element metal Method, it is characterised in that:Silicon materials are added in deionized water, and is added in the organic or inorganic compound of silver, copper, zinc and ferrum At least two, 1~24h is soaked after mix homogeneously, 150- is then carried out in noble gases, reducibility gas or vacuum environment 1200 DEG C of heat treatments;The silicon materials are mesoporous silicon oxide, mesoporous silica, organic functional silicon dioxide, rice hull ash Silicon materials, quartz sand or ceramic material.
So-called reducibility gas refer to the gas that can be oxidized in atmosphere, such as hydrogen, carbon monoxide.
Further, first chelating agent is added in deionized water before mixing.
Further, the chelating agent is ammonia, chitin, poly-glucosamine, sodium citrate, 1B, network ammonia Acid, lauryl sulfate, polyvinylpyrrolidone, polyvinyl alcohol or polyethylene oleyl amine.
Beneficial effect:
1st, the preparation method process is simple of the silicon materials of the load nanometer multi-element metal that the present invention is provided, easy to operate, without the need for Go back original reagent is added, no effuent discharge is pollution-free.
2nd, the silicon materials of load nanometer multi-element metal are prepared using the method for the present invention, nano metal thereon can be loaded Diameter control between 50-1000nm, heavy metal that the material can be in reduction adsorption water, micro-content organism again can be efficiently Kill antibacterial and virus in water.With the silicon materials that metallic particles is simply adsorbed with prior art except that, the load is received Metallic particles in the silicon materials of rice multi-element metal is firmly attached in the surface of silicon materials and micropore, and adhesive force is extremely strong, in water In release rate it is extremely low, with reference to GBT17219《Drinking Water transmission & distribution wetting system and protective material Hygienic safety evaluation specification》In The detection method of record carries out wholesomeness detection to it, and testing result is:The immersion stripping quantity of ferrum is less than 0.02mg/l, copper Stripping quantity be less than 0.017mg/l, the stripping quantity of zinc is less than 0.015mg/l, and the stripping quantity of silver is less than 0.003mg/l, reaches The hygienic requirements of soak test elementary item, meets《Specification》In requirement to drinking water treatment material, therefore using the material Drinking water after purification is directly drunk and body is not resulted in any harm.Therefore load is prepared using the method for the present invention and is received The silicon materials of rice multi-element metal can be used for the purified treatment of drinking water, and using method can be with the load nanometer multi-element metal Silicon materials are core filtrate, are packed in microfilter and are used as water purifier.If the drinkable tap water of user, this is net Hydrophone can be connected with water tap;If user is without central water supply, this water purifier can be connected with barreled raw water.
3rd, the silicon materials of the load nanometer multi-element metal prepared using the method for the present invention can be additionally used in swimming pool Water, landscape water carry out filter-sterilized, can be used to process the sewage such as sanitary sewage, industrial wastewater and middle and high concentration heavy metal wastewater thereby So that its qualified discharge, in can be used for subsoil water, the emergency guarantee of surface water heavy metal pollution.
4th, the method for the present invention is supported on polynary nanometer metallic atom on silicon materials simultaneously, so as to get load nanometer it is many The silicon materials of first metal have the property of various different nano metals simultaneously.What is more important, nanometer multi-element metal mutually it Between have Synergistic biocidal performance, compared with monometallic, greatly strengthen sterilization effect;Galvanic element simultaneously between different metal is anti- Should, greatly strengthen the ability of removing heavy metals.In addition, also have as matrix making multi-element metal coating not using ceramic material The advantage for easily coming off in pH value, water quality, change in flow.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, and following examples are the solutions to the present invention Release, the invention is not limited in following examples.
Embodiment 1
The commercially available porous silicas of 500g are taken, in being added into 1L deionized waters, while adding 10g zinc nitrates, 10g nitric acid Ferrum, 10g copper nitrates and 20ml polyvinyl alcohol, stirring mixing 3h, nitrogen protects lower 700 DEG C of high-temperature process, so as to be loaded The mesoporous silica of nanometer zinc-iron.
Embodiment 2
500g quartz sands are taken, in being added into 2L deionized waters, while adding 5g zinc acetates, 5g iron acetates, 5g Schweinfurt greens With 2g chitins, stirring mixing 10h, the high-temperature process that lower 600 DEG C of vacuum atmosphere, so as to obtain loading the quartz of nanometer zinc-iron copper Sand.
Embodiment 3
500g Woelm Alumina silicon dioxide composite ceramic slabs are taken, in being dipped to 10L deionized waters, while adding 5g Silver nitrate, 5g Schweinfurt greens and 2g sodium citrates, immersion 24h, 500 DEG C of the high-temperature process under 0.5% nitrogen and hydrogen mixture atmosphere, from And obtain the porous alumina ceramic plate of loading nano silvery copper.
Embodiment 4
2000g rice hull ash silicon materials are taken, in being dipped to 15L deionized waters, while adding 5g silver acetates, 5g nitric acid Zinc, soaks 24h, 400 DEG C of the high-temperature process under 1% nitrogen and hydrogen mixture atmosphere, so as to obtain the rice hull ash silicon of loading nano silvery zinc Material.
Embodiment 5
1000g aluminium oxide ceramic balls are taken, in being dipped to 10L deionized waters, while adding 15g silver acetates, 15g acetic acid Zinc, 15g iron acetates, soak 6h, under an argon atmosphere 900 DEG C of high-temperature process, so as to obtain the oxidation of loading nano silvery zinc-iron Aluminum ceramics ball material.
With reference to GBT17219《Drinking Water transmission & distribution wetting system and protective material Hygienic safety evaluation specification》Described in Detection method carries out wholesomeness detection to the Water filter material in above-described embodiment, and testing result is:The immersion dissolution of ferrum Amount is less than 0.02mg/l, and the stripping quantity of copper is less than 0.017mg/l, and the stripping quantity of zinc is less than 0.015mg/l, and the stripping quantity of silver is less than 0.003mg/l, reaches the hygienic requirements of soak test elementary item, meets《Specification》In drinking water treatment material is wanted Ask.

Claims (1)

1. it is a kind of load nanometer multi-element metal silicon materials preparation method, it is characterised in that:Silicon materials are added into deionized water In, and at least two, 1~24h of immersion after mix homogeneously in the organic or inorganic compound of silver, copper, zinc and ferrum is added, then 150-1200 DEG C of heat treatment is carried out in noble gases or vacuum environment;The silicon materials are mesoporous silicon oxide, micropore dioxy SiClx, organic functional silicon dioxide, rice hull ash silicon materials, quartz sand or ceramic material;Add in the forward direction deionized water of mixing Enter chelating agent;The chelating agent is chitin, poly-glucosamine, sodium citrate, 1B, TYR, dodecyl sulfur Hydrochlorate, polyvinylpyrrolidone, polyvinyl alcohol or polyethylene oleyl amine.
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CN104488961B (en) * 2014-12-10 2017-12-05 陕西科技大学 A kind of quartzy loading nano silvery particle antibacterial powder and preparation method thereof
CN104857959A (en) * 2015-05-20 2015-08-26 南京理工大学 Nanocomposite material with iron and copper bi-metal supported in hollow ordered meso-porous silicon ball substrates and preparation method
CN109077053B (en) * 2018-07-14 2021-02-02 泉州师范学院 Preparation method of silver-loaded antibacterial agent
FR3085104B1 (en) * 2018-08-22 2021-01-01 Commissariat Energie Atomique NEW ANTIMICROBIAL AGENT BASED ON DOPED SILICON OXIDE PARTICLES
CN110547302B (en) * 2019-09-04 2021-03-23 晋大纳米科技(厦门)有限公司 Antibacterial powder and preparation method and application thereof
CN112741111A (en) * 2020-12-31 2021-05-04 江苏万源新材料股份有限公司 Antibacterial molecular sieve and preparation method thereof

Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1821108A (en) * 2006-03-08 2006-08-23 华南理工大学 Poly metal cluster water purifying material and its preparing method and use
CN101342495A (en) * 2008-04-22 2009-01-14 深圳大学 Catalyst preparation method and performance test apparatus
CN103232035A (en) * 2013-03-26 2013-08-07 赵建树 Nanometer silver-loaded active carbon and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1821108A (en) * 2006-03-08 2006-08-23 华南理工大学 Poly metal cluster water purifying material and its preparing method and use
CN101342495A (en) * 2008-04-22 2009-01-14 深圳大学 Catalyst preparation method and performance test apparatus
CN103232035A (en) * 2013-03-26 2013-08-07 赵建树 Nanometer silver-loaded active carbon and preparation method thereof

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