Facile synthesis of hollow mesoporous zinc silicate nanoparticles using a dual surfactant system

Kiju Um, Hochan Chang, Kangtaek Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report a facile method for synthesizing hollow mesoporous zinc silicate nanoparticles. By reacting tetraethoxysilane, zinc acetate, cetyltrimethylammonium chloride, and a tri-block copolymer (F127) in water at 80 °C for 3 h and calcining the resulting product, nanoparticles with a core-double shell structure were obtained. Various characterization techniques showed that the as-synthesized nanoparticles have a hollow core, mesoporous zinc silicate inner shell, and mesoporous silica outer shell. By dissolving the zinc oxide phase in the inner shell with a citrate buffer, hollow mesoporous silica nanoparticles were obtained. In addition, we investigated the formation mechanism of the as-synthesized nanoparticles. The hollow structure of the as-synthesized nanoparticles was attributed to the aggregates of mixed micelles that acted as a sacrificial template, while the double shell structure was attributed to the faster formation rate of zinc silicate compared to silica. This method provides a simple and inexpensive route for synthesizing hollow nanoparticles with a core-double shell structure in a single step because the steps for core formation and layer-by-layer shell growth are not required.

Original languageEnglish
Pages (from-to)98717-98721
Number of pages5
JournalRSC Advances
Volume6
Issue number101
DOIs
Publication statusPublished - 2016 Jan 1

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Surface-Active Agents
Silicates
Surface active agents
Zinc
Nanoparticles
Silicon Dioxide
UCON 50-HB-5100
Silica
Zinc Acetate
Zinc Oxide
Micelles
zinc silicate
Zinc oxide
Citric Acid
Block copolymers
Buffers
Water
Polymers

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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abstract = "We report a facile method for synthesizing hollow mesoporous zinc silicate nanoparticles. By reacting tetraethoxysilane, zinc acetate, cetyltrimethylammonium chloride, and a tri-block copolymer (F127) in water at 80 °C for 3 h and calcining the resulting product, nanoparticles with a core-double shell structure were obtained. Various characterization techniques showed that the as-synthesized nanoparticles have a hollow core, mesoporous zinc silicate inner shell, and mesoporous silica outer shell. By dissolving the zinc oxide phase in the inner shell with a citrate buffer, hollow mesoporous silica nanoparticles were obtained. In addition, we investigated the formation mechanism of the as-synthesized nanoparticles. The hollow structure of the as-synthesized nanoparticles was attributed to the aggregates of mixed micelles that acted as a sacrificial template, while the double shell structure was attributed to the faster formation rate of zinc silicate compared to silica. This method provides a simple and inexpensive route for synthesizing hollow nanoparticles with a core-double shell structure in a single step because the steps for core formation and layer-by-layer shell growth are not required.",
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Facile synthesis of hollow mesoporous zinc silicate nanoparticles using a dual surfactant system. / Um, Kiju; Chang, Hochan; Lee, Kangtaek.

In: RSC Advances, Vol. 6, No. 101, 01.01.2016, p. 98717-98721.

Research output: Contribution to journalArticle

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