Halloysite and sepiolite –TiO2 nanocomposites: Synthesis characterization and photocatalytic activity in three aquatic wastes

D. Papoulis, D. Panagiotaras, P. Tsigrou, K. C. Christoforidis, C. Petit, A. Apostolopoulou, E. Stathatos, S. Komarneni, I. Koukouvelas

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Two different nanoclay minerals were combined with nanophase anatase TiO2 for the synthesis of clay-based nanocomposites for improved photocatalytic properties. A new Halloysite (Hal) + Sepiolite (S) - TiO2 ternary nanocomposite was prepared using halloysite from Utah, USA and a recently discovered sepiolite from Greece. Three nanocomposites were synthesized with Hal-TiO2, S-TiO2 and [Hal+S] to TiO2. As a result, TiO2 particles (anatase) were homogeneously deposited and dispersed on the clay surfaces. Phase composition, particle morphology and physical properties of these nanocomposites were characterized by XRD, ATR-FTIR, FE-SEM, DRS-UV–Vis and N2-sorption/desorption isotherms at 77 K. The photocatalytic activity of the clay mineral-TiO2 nanocomposites was examined in the decomposition of paracetamol and tetracycline antibiotics as well as dye Rhodamine-B. The nanocomposites exhibited higher photocatalytic activity under UV irradiation for the decomposition of the targeted pollutants than the benchmark in the field, i.e. TiO2- P25 photocatalyst.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalMaterials Science in Semiconductor Processing
Volume85
DOIs
StatePublished - Oct 2018

Fingerprint

Nanocomposites
nanocomposites
synthesis
clays
rhodamine B
anatase
Titanium dioxide
Clay
minerals
tetracyclines
Decomposition
decomposition
Greece
antibiotics
Antibiotics
Acetaminophen
Photocatalysts
rhodamine
Clay minerals
Tetracycline

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Papoulis, D. ; Panagiotaras, D. ; Tsigrou, P. ; Christoforidis, K. C. ; Petit, C. ; Apostolopoulou, A. ; Stathatos, E. ; Komarneni, S. ; Koukouvelas, I. / Halloysite and sepiolite –TiO2 nanocomposites : Synthesis characterization and photocatalytic activity in three aquatic wastes. In: Materials Science in Semiconductor Processing. 2018 ; Vol. 85. pp. 1-8.
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Halloysite and sepiolite –TiO2 nanocomposites : Synthesis characterization and photocatalytic activity in three aquatic wastes. / Papoulis, D.; Panagiotaras, D.; Tsigrou, P.; Christoforidis, K. C.; Petit, C.; Apostolopoulou, A.; Stathatos, E.; Komarneni, S.; Koukouvelas, I.

In: Materials Science in Semiconductor Processing, Vol. 85, 10.2018, p. 1-8.

Research output: Contribution to journalArticle

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T2 - Synthesis characterization and photocatalytic activity in three aquatic wastes

AU - Papoulis, D.

AU - Panagiotaras, D.

AU - Tsigrou, P.

AU - Christoforidis, K. C.

AU - Petit, C.

AU - Apostolopoulou, A.

AU - Stathatos, E.

AU - Komarneni, S.

AU - Koukouvelas, I.

PY - 2018/10

Y1 - 2018/10

N2 - Two different nanoclay minerals were combined with nanophase anatase TiO2 for the synthesis of clay-based nanocomposites for improved photocatalytic properties. A new Halloysite (Hal) + Sepiolite (S) - TiO2 ternary nanocomposite was prepared using halloysite from Utah, USA and a recently discovered sepiolite from Greece. Three nanocomposites were synthesized with Hal-TiO2, S-TiO2 and [Hal+S] to TiO2. As a result, TiO2 particles (anatase) were homogeneously deposited and dispersed on the clay surfaces. Phase composition, particle morphology and physical properties of these nanocomposites were characterized by XRD, ATR-FTIR, FE-SEM, DRS-UV–Vis and N2-sorption/desorption isotherms at 77 K. The photocatalytic activity of the clay mineral-TiO2 nanocomposites was examined in the decomposition of paracetamol and tetracycline antibiotics as well as dye Rhodamine-B. The nanocomposites exhibited higher photocatalytic activity under UV irradiation for the decomposition of the targeted pollutants than the benchmark in the field, i.e. TiO2- P25 photocatalyst.

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