Novel biocide multifunctional materials based on mesoporous silicas modified by treatment with guanidine polymers or mercaptopropyltrimethoxysilane

Synthesis, characterization, and applications

Alexander Timin, Evgeniy Rumyantsev

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Mesoporous thiol and guanidine-modified silicas with narrow pore size distribution have been prepared by the sol-gel technique. The surface area of the silicas was modified by treatment with 3-mercaptopropyltrimethoxysilane (MPTMS) and the guanidine polymers polyacrylate guanidine (PAG) and polymethacrylate guanidine (PMAG). The mesoporous silicas were characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, and laser diffraction. The materials obtained were used as adsorbents for removing heavy metal ions (Cu2+) from water. It was found that modification of the silica surface by treatment with MPTMS and guanidine polymers provides new sorbents with high adsorption capacity compared with unmodified silica. The equilibrium adsorption capacity for Cu2+ ions on the surface of silicas modified by PAG and PMAG was 65 and 99.8 mg/g, respectively. Moreover, the modified silicas were tested for antimicrobial activity, in vitro, against the Gram-positive prokaryote Staphylococcus aureus and the Gram-negative prokaryote Escherichia coli. The results showed that only silica modified with guanidine polymers had high antimicrobial activity. To summarize, silica modified by treatment with guanidine polymers is more effective than thiol-modified silica for removing heavy metal ions from aqueous solution and can also be used as a biocide for surface sterilization.

Original languageEnglish
Pages (from-to)2437-2451
Number of pages15
JournalResearch on Chemical Intermediates
Volume41
Issue number4
DOIs
Publication statusPublished - 2015
Externally publishedYes

Fingerprint

Disinfectants
Guanidine
Silicon Dioxide
Polymers
Heavy Metals
Polyacrylates
Heavy ions
Sulfhydryl Compounds
Adsorption
Metal ions
Infrared lasers
Sorbents
Adsorbents
Escherichia coli
Pore size
Sol-gels
Desorption
Nitrogen
Diffraction
Ions

Keywords

  • Adsorbent
  • Antimicrobial activity
  • Biocide
  • Heavy metals
  • Mesoporous silicas
  • Sol-gel
  • Surface area

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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title = "Novel biocide multifunctional materials based on mesoporous silicas modified by treatment with guanidine polymers or mercaptopropyltrimethoxysilane: Synthesis, characterization, and applications",
abstract = "Mesoporous thiol and guanidine-modified silicas with narrow pore size distribution have been prepared by the sol-gel technique. The surface area of the silicas was modified by treatment with 3-mercaptopropyltrimethoxysilane (MPTMS) and the guanidine polymers polyacrylate guanidine (PAG) and polymethacrylate guanidine (PMAG). The mesoporous silicas were characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, and laser diffraction. The materials obtained were used as adsorbents for removing heavy metal ions (Cu2+) from water. It was found that modification of the silica surface by treatment with MPTMS and guanidine polymers provides new sorbents with high adsorption capacity compared with unmodified silica. The equilibrium adsorption capacity for Cu2+ ions on the surface of silicas modified by PAG and PMAG was 65 and 99.8 mg/g, respectively. Moreover, the modified silicas were tested for antimicrobial activity, in vitro, against the Gram-positive prokaryote Staphylococcus aureus and the Gram-negative prokaryote Escherichia coli. The results showed that only silica modified with guanidine polymers had high antimicrobial activity. To summarize, silica modified by treatment with guanidine polymers is more effective than thiol-modified silica for removing heavy metal ions from aqueous solution and can also be used as a biocide for surface sterilization.",
keywords = "Adsorbent, Antimicrobial activity, Biocide, Heavy metals, Mesoporous silicas, Sol-gel, Surface area",
author = "Alexander Timin and Evgeniy Rumyantsev",
year = "2015",
doi = "10.1007/s11164-013-1358-y",
language = "English",
volume = "41",
pages = "2437--2451",
journal = "Research on Chemical Intermediates",
issn = "0922-6168",
publisher = "Springer Netherlands",
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TY - JOUR

T1 - Novel biocide multifunctional materials based on mesoporous silicas modified by treatment with guanidine polymers or mercaptopropyltrimethoxysilane

T2 - Synthesis, characterization, and applications

AU - Timin, Alexander

AU - Rumyantsev, Evgeniy

PY - 2015

Y1 - 2015

N2 - Mesoporous thiol and guanidine-modified silicas with narrow pore size distribution have been prepared by the sol-gel technique. The surface area of the silicas was modified by treatment with 3-mercaptopropyltrimethoxysilane (MPTMS) and the guanidine polymers polyacrylate guanidine (PAG) and polymethacrylate guanidine (PMAG). The mesoporous silicas were characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, and laser diffraction. The materials obtained were used as adsorbents for removing heavy metal ions (Cu2+) from water. It was found that modification of the silica surface by treatment with MPTMS and guanidine polymers provides new sorbents with high adsorption capacity compared with unmodified silica. The equilibrium adsorption capacity for Cu2+ ions on the surface of silicas modified by PAG and PMAG was 65 and 99.8 mg/g, respectively. Moreover, the modified silicas were tested for antimicrobial activity, in vitro, against the Gram-positive prokaryote Staphylococcus aureus and the Gram-negative prokaryote Escherichia coli. The results showed that only silica modified with guanidine polymers had high antimicrobial activity. To summarize, silica modified by treatment with guanidine polymers is more effective than thiol-modified silica for removing heavy metal ions from aqueous solution and can also be used as a biocide for surface sterilization.

AB - Mesoporous thiol and guanidine-modified silicas with narrow pore size distribution have been prepared by the sol-gel technique. The surface area of the silicas was modified by treatment with 3-mercaptopropyltrimethoxysilane (MPTMS) and the guanidine polymers polyacrylate guanidine (PAG) and polymethacrylate guanidine (PMAG). The mesoporous silicas were characterized by nitrogen adsorption-desorption analysis, Fourier transform infrared spectroscopy, and laser diffraction. The materials obtained were used as adsorbents for removing heavy metal ions (Cu2+) from water. It was found that modification of the silica surface by treatment with MPTMS and guanidine polymers provides new sorbents with high adsorption capacity compared with unmodified silica. The equilibrium adsorption capacity for Cu2+ ions on the surface of silicas modified by PAG and PMAG was 65 and 99.8 mg/g, respectively. Moreover, the modified silicas were tested for antimicrobial activity, in vitro, against the Gram-positive prokaryote Staphylococcus aureus and the Gram-negative prokaryote Escherichia coli. The results showed that only silica modified with guanidine polymers had high antimicrobial activity. To summarize, silica modified by treatment with guanidine polymers is more effective than thiol-modified silica for removing heavy metal ions from aqueous solution and can also be used as a biocide for surface sterilization.

KW - Adsorbent

KW - Antimicrobial activity

KW - Biocide

KW - Heavy metals

KW - Mesoporous silicas

KW - Sol-gel

KW - Surface area

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