Palygorskite-TiO2 nanocomposites

Part 1. Synthesis and characterization

D. Papoulis, Sridhar Komarneni, D. Panagiotaras, A. Nikolopoulou, Huihui Li, Shu Yin, Sato Tsugio, H. Katsuki

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this paper we describe the synthesis and characterization of small-sized TiO2 particles supported on palygorskite (Pal) with Pal to TiO2 mass ratios of 10:90, 20:80, 30:70, 40:60 and 50:50. The above Pal-TiO2 nanocomposites were prepared by deposition of anatase form of TiO2 on the Pal surfaces using a sol-gel method with titanium isopropoxide as a precursor under hydrothermal treatment at 180°C. Phase composition, particle morphology and physical properties of these samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), attenuated total reflection using Fourier transform infrared spectroscopy (ATR-FTIR) and N2 surface area analysis by BET. In order to investigate the absorption properties of the catalysts, UV-vis reflection spectra were measured. Preparation of Pal-TiO2 nanocomposites led to good dispersion of TiO2 on Pal surfaces. By increasing the amount of TiO2, the deposited 3-10nm TiO2 particles were found to be aggregated on the surfaces of the Pal particles. However, by decreasing the amount of TiO2, the Pal particles were found to be aggregated. After treating with TiO2, Pal samples largely showed interparticle mesopores of about 5.8nm. It was observed that the commercial titania P25 showed no absorption in visible light region. In contrast, the prepared Pal-TiO2 samples showed gray color and absorption in visible light region.

Original languageEnglish (US)
Pages (from-to)191-197
Number of pages7
JournalApplied Clay Science
Volume83-84
DOIs
StatePublished - Oct 1 2013

Fingerprint

palygorskite
Nanocomposites
titanium
attapulgite
anatase
FTIR spectroscopy
Phase composition
Sol-gel process
transmission electron microscopy
gel
surface area
Physical properties
physical property
catalyst
scanning electron microscopy
X-ray diffraction
particle
Transmission electron microscopy
Color
X ray diffraction

All Science Journal Classification (ASJC) codes

  • Geology
  • Geochemistry and Petrology

Cite this

Papoulis, D., Komarneni, S., Panagiotaras, D., Nikolopoulou, A., Li, H., Yin, S., ... Katsuki, H. (2013). Palygorskite-TiO2 nanocomposites: Part 1. Synthesis and characterization. Applied Clay Science, 83-84, 191-197. https://doi.org/10.1016/j.clay.2013.09.003
Papoulis, D. ; Komarneni, Sridhar ; Panagiotaras, D. ; Nikolopoulou, A. ; Li, Huihui ; Yin, Shu ; Tsugio, Sato ; Katsuki, H. / Palygorskite-TiO2 nanocomposites : Part 1. Synthesis and characterization. In: Applied Clay Science. 2013 ; Vol. 83-84. pp. 191-197.
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abstract = "In this paper we describe the synthesis and characterization of small-sized TiO2 particles supported on palygorskite (Pal) with Pal to TiO2 mass ratios of 10:90, 20:80, 30:70, 40:60 and 50:50. The above Pal-TiO2 nanocomposites were prepared by deposition of anatase form of TiO2 on the Pal surfaces using a sol-gel method with titanium isopropoxide as a precursor under hydrothermal treatment at 180°C. Phase composition, particle morphology and physical properties of these samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), attenuated total reflection using Fourier transform infrared spectroscopy (ATR-FTIR) and N2 surface area analysis by BET. In order to investigate the absorption properties of the catalysts, UV-vis reflection spectra were measured. Preparation of Pal-TiO2 nanocomposites led to good dispersion of TiO2 on Pal surfaces. By increasing the amount of TiO2, the deposited 3-10nm TiO2 particles were found to be aggregated on the surfaces of the Pal particles. However, by decreasing the amount of TiO2, the Pal particles were found to be aggregated. After treating with TiO2, Pal samples largely showed interparticle mesopores of about 5.8nm. It was observed that the commercial titania P25 showed no absorption in visible light region. In contrast, the prepared Pal-TiO2 samples showed gray color and absorption in visible light region.",
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Papoulis, D, Komarneni, S, Panagiotaras, D, Nikolopoulou, A, Li, H, Yin, S, Tsugio, S & Katsuki, H 2013, 'Palygorskite-TiO2 nanocomposites: Part 1. Synthesis and characterization', Applied Clay Science, vol. 83-84, pp. 191-197. https://doi.org/10.1016/j.clay.2013.09.003

Palygorskite-TiO2 nanocomposites : Part 1. Synthesis and characterization. / Papoulis, D.; Komarneni, Sridhar; Panagiotaras, D.; Nikolopoulou, A.; Li, Huihui; Yin, Shu; Tsugio, Sato; Katsuki, H.

In: Applied Clay Science, Vol. 83-84, 01.10.2013, p. 191-197.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Palygorskite-TiO2 nanocomposites

T2 - Part 1. Synthesis and characterization

AU - Papoulis, D.

AU - Komarneni, Sridhar

AU - Panagiotaras, D.

AU - Nikolopoulou, A.

AU - Li, Huihui

AU - Yin, Shu

AU - Tsugio, Sato

AU - Katsuki, H.

PY - 2013/10/1

Y1 - 2013/10/1

N2 - In this paper we describe the synthesis and characterization of small-sized TiO2 particles supported on palygorskite (Pal) with Pal to TiO2 mass ratios of 10:90, 20:80, 30:70, 40:60 and 50:50. The above Pal-TiO2 nanocomposites were prepared by deposition of anatase form of TiO2 on the Pal surfaces using a sol-gel method with titanium isopropoxide as a precursor under hydrothermal treatment at 180°C. Phase composition, particle morphology and physical properties of these samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), attenuated total reflection using Fourier transform infrared spectroscopy (ATR-FTIR) and N2 surface area analysis by BET. In order to investigate the absorption properties of the catalysts, UV-vis reflection spectra were measured. Preparation of Pal-TiO2 nanocomposites led to good dispersion of TiO2 on Pal surfaces. By increasing the amount of TiO2, the deposited 3-10nm TiO2 particles were found to be aggregated on the surfaces of the Pal particles. However, by decreasing the amount of TiO2, the Pal particles were found to be aggregated. After treating with TiO2, Pal samples largely showed interparticle mesopores of about 5.8nm. It was observed that the commercial titania P25 showed no absorption in visible light region. In contrast, the prepared Pal-TiO2 samples showed gray color and absorption in visible light region.

AB - In this paper we describe the synthesis and characterization of small-sized TiO2 particles supported on palygorskite (Pal) with Pal to TiO2 mass ratios of 10:90, 20:80, 30:70, 40:60 and 50:50. The above Pal-TiO2 nanocomposites were prepared by deposition of anatase form of TiO2 on the Pal surfaces using a sol-gel method with titanium isopropoxide as a precursor under hydrothermal treatment at 180°C. Phase composition, particle morphology and physical properties of these samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), attenuated total reflection using Fourier transform infrared spectroscopy (ATR-FTIR) and N2 surface area analysis by BET. In order to investigate the absorption properties of the catalysts, UV-vis reflection spectra were measured. Preparation of Pal-TiO2 nanocomposites led to good dispersion of TiO2 on Pal surfaces. By increasing the amount of TiO2, the deposited 3-10nm TiO2 particles were found to be aggregated on the surfaces of the Pal particles. However, by decreasing the amount of TiO2, the Pal particles were found to be aggregated. After treating with TiO2, Pal samples largely showed interparticle mesopores of about 5.8nm. It was observed that the commercial titania P25 showed no absorption in visible light region. In contrast, the prepared Pal-TiO2 samples showed gray color and absorption in visible light region.

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