High-yield production of mesoporous nanoscrolls from kaolinite by ultrasonic assisted exfoliation

Xiaoguang Li, Qinfu Liu, Hongfei Cheng, Sridhar Komarneni

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This study presents a novel idea to prepare large amounts of kaolinite nanoscrolls using ultrasonic assisted liquid exfoliation method. Ultrasonication was used to facilitate the intercalation of cetyltrimethylammonium chloride (CTAC) and also, to promote the exfoliation process greatly. The formation of the kaolinite nanoscrolls was confirmed by X-ray diffraction (XRD), SEM, and TEM. New mesopores formed among the nanoscrolls were in the range of 12–30 nm. The specific surface area (SBET) of liquid exfoliated kaolinite nanoscrolls was found to be 5 times larger than that of the original kaolinite. However, SBETincreased 10 times when ultrasonication was used. The maximum SBETof the prepared kaolinite nanoscrolls with sonication was found to be 100 m2/g. The total pore volume increased from 0.049 cm3/g of original kaolinite to 0.22 cm3/g for liquid exfoliated product and 0.48 cm3/g for ultrasonic assisted liquid exfoliated product.

Original languageEnglish (US)
Pages (from-to)66-71
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume241
DOIs
StatePublished - Jan 1 2017

Fingerprint

Kaolin
kaolinite
Kaolinite
ultrasonics
Ultrasonics
Liquids
liquids
Sonication
products
Intercalation
Specific surface area
intercalation
chlorides
Transmission electron microscopy
porosity
X ray diffraction
transmission electron microscopy
Scanning electron microscopy
scanning electron microscopy
diffraction

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Cite this

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abstract = "This study presents a novel idea to prepare large amounts of kaolinite nanoscrolls using ultrasonic assisted liquid exfoliation method. Ultrasonication was used to facilitate the intercalation of cetyltrimethylammonium chloride (CTAC) and also, to promote the exfoliation process greatly. The formation of the kaolinite nanoscrolls was confirmed by X-ray diffraction (XRD), SEM, and TEM. New mesopores formed among the nanoscrolls were in the range of 12–30 nm. The specific surface area (SBET) of liquid exfoliated kaolinite nanoscrolls was found to be 5 times larger than that of the original kaolinite. However, SBETincreased 10 times when ultrasonication was used. The maximum SBETof the prepared kaolinite nanoscrolls with sonication was found to be 100 m2/g. The total pore volume increased from 0.049 cm3/g of original kaolinite to 0.22 cm3/g for liquid exfoliated product and 0.48 cm3/g for ultrasonic assisted liquid exfoliated product.",
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High-yield production of mesoporous nanoscrolls from kaolinite by ultrasonic assisted exfoliation. / Li, Xiaoguang; Liu, Qinfu; Cheng, Hongfei; Komarneni, Sridhar.

In: Microporous and Mesoporous Materials, Vol. 241, 01.01.2017, p. 66-71.

Research output: Contribution to journalArticle

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AB - This study presents a novel idea to prepare large amounts of kaolinite nanoscrolls using ultrasonic assisted liquid exfoliation method. Ultrasonication was used to facilitate the intercalation of cetyltrimethylammonium chloride (CTAC) and also, to promote the exfoliation process greatly. The formation of the kaolinite nanoscrolls was confirmed by X-ray diffraction (XRD), SEM, and TEM. New mesopores formed among the nanoscrolls were in the range of 12–30 nm. The specific surface area (SBET) of liquid exfoliated kaolinite nanoscrolls was found to be 5 times larger than that of the original kaolinite. However, SBETincreased 10 times when ultrasonication was used. The maximum SBETof the prepared kaolinite nanoscrolls with sonication was found to be 100 m2/g. The total pore volume increased from 0.049 cm3/g of original kaolinite to 0.22 cm3/g for liquid exfoliated product and 0.48 cm3/g for ultrasonic assisted liquid exfoliated product.

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