WO2008044964A1 - Matériau filtrant composite et procédé de fabrication - Google Patents

Matériau filtrant composite et procédé de fabrication Download PDF

Info

Publication number
WO2008044964A1
WO2008044964A1 PCT/RU2007/000329 RU2007000329W WO2008044964A1 WO 2008044964 A1 WO2008044964 A1 WO 2008044964A1 RU 2007000329 W RU2007000329 W RU 2007000329W WO 2008044964 A1 WO2008044964 A1 WO 2008044964A1
Authority
WO
WIPO (PCT)
Prior art keywords
silver
carrier
carried out
solution
layer
Prior art date
Application number
PCT/RU2007/000329
Other languages
English (en)
Russian (ru)
Inventor
Alexander Sergeevich Parfyonov
Dmitry Nikolaevich Manokhin
Darya Veniaminovna Kruglova
Original Assignee
Alexander Sergeevich Parfyonov
Dmitry Nikolaevich Manokhin
Darya Veniaminovna Kruglova
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alexander Sergeevich Parfyonov, Dmitry Nikolaevich Manokhin, Darya Veniaminovna Kruglova filed Critical Alexander Sergeevich Parfyonov
Publication of WO2008044964A1 publication Critical patent/WO2008044964A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B01D39/06—Inorganic material, e.g. asbestos fibres, glass beads or fibres
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/04—Antibacterial agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0258—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanoparticles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0442—Antimicrobial, antibacterial, antifungal additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material

Definitions

  • the invention relates to filtering materials having antimicrobial activity.
  • Known filter material for cleaning liquid and gaseous substances made of activated carbon continuous porous monofilament with a diameter of 4-10 ⁇ m, a specific surface area of 590-2550 m / g and a sorption pore volume of 0.63-1.82 cm Iv, the surface of which is coated with a porous dioxide membrane silicon in quantity
  • Known materials having antimicrobial activity containing silver nanoparticles dispersed in a carrier medium.
  • a method for producing nanostructured metal and bimetallic particles by reducing metal ions in a reverse micelle system.
  • the method involves preparing a reverse micellar dispersion of a reducing agent based on a solution of a surfactant in a non-polar solvent, using a substance from the flavonoid group as a reducing agent, using bis-2-ethylhexyl sodium sulfosuccinate (RT aerosol) as a surfactant, and as a non-polar the solvent used is a substance from the group of saturated hydrocarbons (RU JCH22147487, from 04.20.2000).
  • an agent having antimicrobial activity which is a water-soluble silver compound based on the natural arabinogalactan polysaccharide with a particle size of 10-30 nm, which exhibits antimicrobial activity against pathogenic microbes Escherichia coli, Salmopella turhimurium, Starhuselossus. Vasillus sabtilis, Candida albigans (RU JN22278669, dated June 27, 2006).
  • the use of the above funds in the composition of the filtering materials is inefficient.
  • Known filter material (RU Zh2043310, from 10.05.1995) for disinfecting water, containing (% by mass): macroporous, highly acidic silver-containing cation exchange resin - 10-30 solid iodine - 40-20 anion exchange resin in a halide form - 40-60.
  • the material is prepared as follows.
  • the surface of the carrier (polymer or inorganic substate) is cleaned using various chemicals and washed with water.
  • the washed carrier is treated with an aqueous solution of tin salt, washed from excess salt with water, and then treated with an aqueous solution of silver salt in the presence of a reducing agent.
  • a thin layer containing silver nanoparticles on the surface of the carrier is obtained.
  • the resulting layer is stabilized in a solution containing gold or platinum metal chlorides, washed with water and dried in air.
  • a disadvantage of the known technical solution is the high cost of the material obtained, the use of chemical reducing agents in the process of its production, due to which the process is unstable.
  • the objective of the present invention is to develop an effective filter material with high antimicrobial activity and the development of a simple method for its preparation, which has stability and reproducibility.
  • the problem is solved by the described method of preparing a composite filter material with antimicrobial activity, including cleaning the surface of the carrier, treating the carrier with an aqueous solution of divalent tin salt, treating the aqueous solution with silver salt, washing the carrier with demineralized water, then recovering the silver ions by photoactivation in the carrier phase until formation on its surface a layer containing silver nanoparticles and drying, and the carrier is selected from the series: a yumosilikat, silicon dioxide, aluminum oxide, titanium dioxide.
  • the treatment of the carrier with a solution of tin salt is carried out at a pH of 2.0-3.0.
  • photoactivation is carried out by irradiating a thin layer of material 300 W xenon lamp for 5-10 minutes, or a metal halogen 150 W lamp for 10-20 minutes.
  • Photoactivation is also carried out by circulating the material in water upon irradiation with a quartz lamp.
  • the method assumes that the drying is carried out under microwave radiation.
  • the described composite filtering material with antimicrobial activity which contains a three-layer structure of silver-containing nanoparticles on the surface of the carrier, in which the first layer contains silver metal particles, the second layer contains silver oxide particles, and the third layer contains silver clusters, this material is obtained by the method described above.
  • the claimed technical solution differs from the prototype in a different sequence of stages in the implementation of the method, in a fundamentally different method for the recovery of silver cations to silver metal, due to which a material with a different structure is obtained
  • the claimed structure of the material is confirmed by images obtained using an atomic-silicon microscope. Confirmation of the existence of silver clusters in the third layer of the structure was obtained using fluorescence microscopy, which allows one to record the fluorescence spectra of silver clusters.
  • the effectiveness of the claimed material is directly related to the method of its preparation, which provides a composite consisting of three layers: metallic silver (metal), silver oxide
  • the introduction of silver into the matrix is carried out using a weak reducing agent of divalent Sn.
  • Sn silver growth (nucleation) centers are created not in the volume of silver nitrate, but on the surface of the matrix.
  • the initial silver solution has a low concentration.
  • an angstrom oxide layer forms on their surface upon contact with atmospheric oxygen, then, upon photoactivation of the Ag / AgO composite, highly active silver clusters are formed on the surface of the oxide layer.
  • Additional activation of the clusters is carried out during drying using microwave radiation. Selected media provide optimal filtering properties of the resulting product.
  • the resulting material has a high antimicrobial activity. This activity is determined not so much by the amount of free silver ions in the solution volume as it is associated with the possibility of generating free radicals.
  • Aluminosilicate - zeolite clinoptilolite was used as a carrier.
  • the carrier was previously washed in demineralized water (twice, the volume of water exceeded the volume of the zeolite by at least five times, the temperature of the washing water was 20–25 degrees).
  • a solution of divalent tin (0.025 grams per liter of water) was added to the container containing the carrier.
  • the pH of the SnCl 2 solution was adjusted to 3.0 with a 0.1 H hydrochloric acid solution.
  • the exposure time of clinoptilolite in SnCl 2 solution was 10 minutes, while the volume of SnCl 2 exceeded the volume of zeolite.
  • the exposure of the zeolite in a solution of SnCl 2 was carried out with constant stirring.
  • the temperature of the SnCl 2 solution is 20-25 degrees.
  • the excess SnCl 2 solution above the zeolite volume was removed, and the excess was poured into the container containing the zeolite demineralized water to wash it from excess tin salt. Washing of the zeolite from the remnants of tin salts is carried out twice.
  • a freshly prepared silver nitrate solution containing 0.015 grams of AgNO3 is poured into the zeolite with constant stirring. This procedure is carried out either in the dark or using a red filter (transmitting light with a wavelength of more than 630 nm).
  • the temperature of the silver nitrate solution is 25 degrees Celsius.
  • the reaction time of silver salts with the treated SpSlg zeolite is from 1 to 2 minutes.
  • the deposition of silver cations from solution is monitored using an ion selective electrode. After silver is deposited on the surface and in the zeolite cavity, the latter is washed with demineralized water. After that, the washed zeolite was subjected to photoactivation for 15 minutes. For this, a zeolite placed in a thin layer on the surface of the bath is illuminated with a 150 W metal halide lamp from a distance of not 50 cm. During the photoactivation procedure, the zeolite is in a wet state. To control the formation of silver clusters, zeolite samples were taken to evaluate the intrinsic emission of silver. After the photoactivation procedure is completed, the zeolite is subjected to further activation during drying in a microwave oven.
  • zeolite mordenite As a carrier, zeolite mordenite was used. The process of preparing a composite material with antimicrobial activity using this type of carrier was carried out as in Example 1, but photoactivation was carried out using a 300 W xenon lamp for 7 minutes.
  • Silicon dioxide (silica sand) was used as a carrier. Unlike zeolite, which has a high specific surface, which is mainly formed by channels and cavities, the surface of quartz sand is determined by its faces. The smaller landing surface of quartz sand to accommodate silver nanostructures necessitated a decrease in the concentration of silver nitrate solution to 0.05 grams / liter. The concentration of the surface activating silica sand solution SnCl 2 was the same as when using zeolites. Otherwise, the technology for preparing a composite using quartz sand does not differ from that described in Example I 5, but photoactivation was carried out by circulating the material in water upon irradiation with a quartz lamp.
  • Titanium dioxide with a particle size of 1.0 mm was used as a carrier.
  • the carrier modified with tin cations after washing with demineralized water is subjected to interaction with an aqueous solution of AgNOz with a concentration of 0.01 g / l for 2-3 minutes.
  • the resulting intermediate was washed with water and subjected to photoactivation under the conditions of example 1. then placed in a microwave oven for drying.
  • Alminium oxide with a particle size of 1.5 mm was used as a carrier. The process is carried out as in example 4.
  • the method in contrast to the prototype, only two chemical reagents (tin salt and silver salt) were used, i.e. the method is more economical and provides a material with good filtering characteristics, as well as with high and stable antimicrobial activity.
  • the resulting composite material contains silver in such a way that it can form with oxygen, the so-called oxygen bridges, which are unstable and have powerful activity, due to which the free-radical activity of water under the action of silver nanoparticles has both bactericidal and bacteriostatic effects.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Animal Behavior & Ethology (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Oncology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Communicable Diseases (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne des matériaux filtrants possédant une activité antimicrobienne. Elle porte sur un procédé de fabrication d'un matériau dans lequel on choisit le support dans la série composé d'alumosilicate, de dioxyde de silicium, d'oxyde d'aluminium et de dioxyde de titane puis on rince ledit support. On effectue le traitement avec une solution de sel d'étain bivalent puis avec une solution de nitrate d'argent, le rinçage avec de l'eau déminéralisée, la photo-activation avec la réduction des ions d'argents et la formation à la surface du support d'une structure à couche triple constituée de nanoparticules d'argent, d'oxydes d'argent et de paquets d'argent. Le matériau ainsi obtenu est séché dans un four à micro-ondes. L'invention permet de produire du matériau possédant une bonne activité antimicrobienne et des caractéristiques de filtrages remarquables.
PCT/RU2007/000329 2006-10-12 2007-06-14 Matériau filtrant composite et procédé de fabrication WO2008044964A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2006136078/15A RU2315649C1 (ru) 2006-10-12 2006-10-12 Композиционный фильтрующий материал и способ его приготовления
RU2006136078 2006-10-12

Publications (1)

Publication Number Publication Date
WO2008044964A1 true WO2008044964A1 (fr) 2008-04-17

Family

ID=39109955

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2007/000329 WO2008044964A1 (fr) 2006-10-12 2007-06-14 Matériau filtrant composite et procédé de fabrication

Country Status (2)

Country Link
RU (1) RU2315649C1 (fr)
WO (1) WO2008044964A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2465951C1 (ru) 2011-03-01 2012-11-10 Закрытое Акционерное Общество "Аквафор Продакшн" (Зао "Аквафор Продакшн") Композиционный материал для фильтрационной очистки жидкости
RU2550398C1 (ru) * 2013-11-12 2015-05-10 Федеральное государственное бюджетное учреждение науки Институт химиии твердого тела и механохимии Сибирского отделения Российской академии наук (ИХТТМ СО РАН) Антимикробный фильтующий материал и способ его получения

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU971464A1 (ru) * 1981-04-10 1982-11-07 Предприятие П/Я М-5817 Способ получени бактерицидного сорбента дл очистки питьевой воды
RU2103056C1 (ru) * 1993-11-23 1998-01-27 Институт катализа им.Г.К.Борескова СО РАН Пористый композиционный материал
US6224983B1 (en) * 1989-05-04 2001-05-01 Ad Tech Holdings Limited Deposition of silver layer on nonconducting substrate
US6716895B1 (en) * 1999-12-15 2004-04-06 C.R. Bard, Inc. Polymer compositions containing colloids of silver salts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU971464A1 (ru) * 1981-04-10 1982-11-07 Предприятие П/Я М-5817 Способ получени бактерицидного сорбента дл очистки питьевой воды
US6224983B1 (en) * 1989-05-04 2001-05-01 Ad Tech Holdings Limited Deposition of silver layer on nonconducting substrate
RU2103056C1 (ru) * 1993-11-23 1998-01-27 Институт катализа им.Г.К.Борескова СО РАН Пористый композиционный материал
US6716895B1 (en) * 1999-12-15 2004-04-06 C.R. Bard, Inc. Polymer compositions containing colloids of silver salts

Also Published As

Publication number Publication date
RU2315649C1 (ru) 2008-01-27

Similar Documents

Publication Publication Date Title
KR100357482B1 (ko) 광촉매기능을갖는다기능재료및그의제조방법
JP3678606B2 (ja) 金属修飾アパタイト及びその製造方法
EP0684075A1 (fr) Substance multifonction a effet photocatalytique et procede de production
JP6169688B2 (ja) 光触媒材、その製造方法及び光触媒装置
JPH01316303A (ja) 水系殺菌材
TWI665015B (zh) 具有抗菌效果的光觸媒材料、其製備方法與光觸媒構件
WO2010054304A2 (fr) Capsules de polyélectrolytes conjugués : antimicrobiens photo-activés
Mahlambi et al. Layer‐by‐Layer Self‐Assembled Metal‐Ion‐(Ag‐, Co‐, Ni‐, and Pd‐) Doped TiO2 Nanoparticles: Synthesis, Characterisation, and Visible Light Degradation of Rhodamine B
Kul et al. An investigation of natural and modified diatomite performance for adsorption of Basic Blue 41: isotherm, kinetic, and thermodynamic studies
RU2315649C1 (ru) Композиционный фильтрующий материал и способ его приготовления
JP4445789B2 (ja) アパタイト被覆用組成物及びアパタイト被覆二酸化チタンの製造方法
KR20130114686A (ko) 바이러스 불활화제
JP2003212754A (ja) 入浴剤組成物
JP2024000919A (ja) 金属イオン配合ケイ酸塩被覆光触媒性複合組成物の製造方法
JP6362281B2 (ja) 酸化亜鉛結晶の生成方法
RU2482912C1 (ru) Способ получения фильтрующе-сорбирующего материала с фотокаталитическими свойствами
JP4526619B2 (ja) 可視光活性光触媒
JPH105598A (ja) 光触媒粉体およびそれを用いた光触媒体ならびにそれらの製造方法、それらを用いた環境浄化方法
JP2003012306A (ja) 活性酸素発生材料
RU2465951C1 (ru) Композиционный материал для фильтрационной очистки жидкости
JPS5824338A (ja) 吸着剤
JP4224598B2 (ja) 金属修飾アパタイト及びその製造方法
Bhatti et al. Renewable and eco-friendly ZnO immobilized onto dead sea sponge floating materials with dual practical aspects for enhanced photocatalysis and disinfection applications
JP4324660B2 (ja) 金属修飾アパタイト及びその製造方法
JPH03287508A (ja) アルミナを母体とする抗菌性組成物

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07794055

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07794055

Country of ref document: EP

Kind code of ref document: A1