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A platform for research: civil engineering, architecture and urbanism
Montmorillonite-carbon nanocomposites with nanosheet and nanotube structure: Preparation, characterization and structure evolution
Abstract In this study, the preparation of montmorillonite (Mt)-polyvinyl alcohol (PVA) nanocomposites (MtPVAN), and the formation of corresponding Mt carbon nanocomposites with nanosheet and nanotube structures were investigated. MtPVAN was prepared by solution intercalation combined with the dispersion method of ultrasonic radiation (UR) and mechanical stirring (MS). XRD analysis showed that the MtPVAN with d 001 at 2.16nm were successfully obtained with optimum mass ratio of 1:1.5 (Mt:PVA) and solid content of 10%. Then, the Mt-carbon, nanocomposites (d 001 =1.56nm) with sandwich structure was prepared by carbonizing MtPVAN at 400°C in nitrogen atmosphere for 3h; and Mt-carbon nanosheets or nanotubes with carbon content of 5.10% was obtained by exfoliating the sandwich-like Mt-carbon nanocomposites with further airflow pulverization process. The average diameter and the thickness of the Mt-carbon nanosheets was about 2μm and 10nm, respectively; while the diameter of the nanotubes was 7–80nm. The mechanism of the formation and the structure evolution of the Mt-carbon nanocomposites were also discussed.
Highlights ► Mt-PVA intercalation nanocomposites were obtained by the intercalation reaction. ► Mt-carbon nanocomposites with nanosheet and nanotube structure were prepared. ► Mt-carbon nanocomposites may bring some new opportunity in applied clay sciences.
Montmorillonite-carbon nanocomposites with nanosheet and nanotube structure: Preparation, characterization and structure evolution
Abstract In this study, the preparation of montmorillonite (Mt)-polyvinyl alcohol (PVA) nanocomposites (MtPVAN), and the formation of corresponding Mt carbon nanocomposites with nanosheet and nanotube structures were investigated. MtPVAN was prepared by solution intercalation combined with the dispersion method of ultrasonic radiation (UR) and mechanical stirring (MS). XRD analysis showed that the MtPVAN with d 001 at 2.16nm were successfully obtained with optimum mass ratio of 1:1.5 (Mt:PVA) and solid content of 10%. Then, the Mt-carbon, nanocomposites (d 001 =1.56nm) with sandwich structure was prepared by carbonizing MtPVAN at 400°C in nitrogen atmosphere for 3h; and Mt-carbon nanosheets or nanotubes with carbon content of 5.10% was obtained by exfoliating the sandwich-like Mt-carbon nanocomposites with further airflow pulverization process. The average diameter and the thickness of the Mt-carbon nanosheets was about 2μm and 10nm, respectively; while the diameter of the nanotubes was 7–80nm. The mechanism of the formation and the structure evolution of the Mt-carbon nanocomposites were also discussed.
Highlights ► Mt-PVA intercalation nanocomposites were obtained by the intercalation reaction. ► Mt-carbon nanocomposites with nanosheet and nanotube structure were prepared. ► Mt-carbon nanocomposites may bring some new opportunity in applied clay sciences.
Montmorillonite-carbon nanocomposites with nanosheet and nanotube structure: Preparation, characterization and structure evolution
Zhang, Zepeng (author) / Liao, Libing (author) / Xia, Zhiguo (author) / Li, Cheng (author)
Applied Clay Science ; 55 ; 75-82
2011-10-13
8 pages
Article (Journal)
Electronic Resource
English
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