Investigation of the photoluminescence properties of Urfa stone powder doped with chromium oxide
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ICCESEN 2017
Investigation of the photoluminescence properties of Urfa stone powder doped with chromium oxide Serife Yalcin 1 & Bulent Aktas 2 & Mehmet Albaskara 2 & Ali Arslan 1 & Gokhan Ceyhan 3 Received: 27 December 2017 / Accepted: 27 March 2018 / Published online: 10 April 2018 # Saudi Society for Geosciences 2018
Abstract In this study, the structural properties of Urfa stone (US) doped with chromium oxide (Cr2O3) were investigated using X-ray diffraction (XRD) and FT-IR spectroscopy. The photoluminescence properties of US doped with varying amounts of Cr2O3 (5, 10, 20, 30, and 40%) were also investigated. US powder was obtained via grinding with an agate mortar, and Cr2O3 was then added as a dopant to the US powder. The samples were sintered at 1000 °C for 1 h. The XRD results of the US powder doped with Cr2O3 via mechanical alloying showed the presence of some crystalline phases: calcite (CaCO3) and eskolate (Cr2O3). Furthermore, it was found that calcium oxide (CaO) and tongbaite (Cr3C2) were also present in the sintered samples. The photoluminescence analysis results indicated that the emission and excitation bands of the US-Cr complex shifted to longer and shorter wavelengths in the solid state (non-aqueous media), respectively. Keywords Urfa stone (US) . Chromium oxide (Cr2O3) . Mechanical alloying . Photoluminescence
Introduction Natural stones, which are sources of information to geologists, are based on the various developments and cultures around the world. The common feature of all stone structures is their impressive and permanent existence. Thus, stone use is always preferred in every culture. Today, natural stones continue to be used. This preference increases the reputation of some natural stones, allows them to be sold, and increases their economic value in the region and in which they are located (Kazancı and Gürbüz 2014). Urfa stone (US), also called BHavara^ or BNahit^ stone, is one such natural stone and is used as a
building material. It has a porous structure, so is suitable for sound and heat isolation, and is primarily white in color (Gölcük 2015). In recent years, much attention has been given to the preparation and characterization of rareearth-doped inorganic luminescent materials, mainly focusing on metal oxides because of their high luminosity and chemical stability (Kang et al. 2009). In this study, US was doped with varying amounts of chromium oxide (Cr2O3). The elemental composition of US was determined using the inductive coupling plasma method. These samples were also characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and the photoluminescence method.
This article is part of the Topical Collection on Geo-Resources-EarthEnvironmental Sciences * Serife Yalcin [email protected] * Bulent Aktas [email protected] 1
Physics Department, Harran University, Sanliurfa, Turkey
2
Mechanical Engineering Department, Harran University, Sanliurfa, Turkey
3
Research and Development Centre for University-Industry-Public Relations,
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