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Ceramics 2018, 1(1), 120-127; https://doi.org/10.3390/ceramics1010010

Synthesis and Characterization of Nano-Tungsten Oxide Precipitated onto Natural Inorganic Clay for Humidity-Sensing Applications

1
Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
2
Department of Conservation, Faculty of Archaeology, Sohag University, Sohag 82524, Egypt
3
High Institute for Engineering & Technology, 21 K Cairo-Belbeis Rd, Al-Obour 11828, Egypt
4
Faculty of Engineering and Technology, Badr University in Cairo (BUC), Badr 11829, Egypt
5
Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah 41411, Saudi Arabia
6
The Higher Institute of Optics Technology (HIOT), Heliopolis, Cairo 17361, Egypt
7
Department of Metallurgy and Materials Engineering, UET, Taxila, Punjab 47050, Pakistan
8
Department of Basic Science, Faculty of Engineering Science, Sinai University, North Sinai 45615, Egypt
*
Author to whom correspondence should be addressed.
Received: 28 May 2018 / Revised: 27 June 2018 / Accepted: 10 July 2018 / Published: 12 July 2018
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Abstract

A wet chemical method was used to obtain tungsten oxide nanoparticles from tungsten tetrachloride and natural microfibrous inorganic clay (sepiolite) as a starting material. Precipitation of tungsten oxide species onto sepiolite under basic conditions and subsequent thermal treatment was investigated, prompted by the abundance of sepiolite in nature and the useful environmental applications that could be attained. Laser granulometry, X-ray diffraction, field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDX), and high-resolution transmission electron microscopy (HR-TEM) techniques were used to study the particle-size distribution, the morphology, and the composition of the prepared sample. Our findings show the presence of tungsten oxide nanoparticles, which are less than 50 nm, on the needles of the modified sepiolite. View Full-Text
Keywords: HRTEM; nanoparticles; precipitation; sepiolite; tungsten oxide HRTEM; nanoparticles; precipitation; sepiolite; tungsten oxide
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Afify, A.S.; Elsayed, A.; Hassan, M.; Ataalla, M.; Mohamed, A.; Hussain, A.; Abu-Khadra, A.S.; Tulliani, J.-M. Synthesis and Characterization of Nano-Tungsten Oxide Precipitated onto Natural Inorganic Clay for Humidity-Sensing Applications. Ceramics 2018, 1, 120-127.

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