TY - JOUR
T1 - High-yield production of mesoporous nanoscrolls from kaolinite by ultrasonic assisted exfoliation
AU - Li, Xiaoguang
AU - Liu, Qinfu
AU - Cheng, Hongfei
AU - Komarneni, Sridhar
N1 - Funding Information:
The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (No. 51034006), Beijing Nova Program (xx2015B081), the Open Research Project of State Key Laboratory for Coal Resources and Safe Mining, China University of Mining &Technology, Beijing (SKLCRSM14KFB02), and the Open Research Fund Program of Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, Hunan University of Science and Technology(E21530). This work is supported in part by China Scholarship Council (CSC) during a visit of 'Xiaoguang Li (CSC No. 201506430018)' to The Pennsylvania State University is acknowledged.
Publisher Copyright:
© 2016 Elsevier Inc.
PY - 2017
Y1 - 2017
N2 - 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.
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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U2 - 10.1016/j.micromeso.2016.12.006
DO - 10.1016/j.micromeso.2016.12.006
M3 - Article
AN - SCOPUS:85009471718
SN - 1387-1811
VL - 241
SP - 66
EP - 71
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
ER -