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Advances in Materials Science and EngineeringVolume 2014 2014, Article ID 819745, 9 pages

Research Article

Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Davutpasa Campus, Davutpasa Street No. 127, Esenler, 34210 Istanbul, Turkey

Department of Physics, Faculty of Arts and Science, Yildiz Technical University, Davutpasa Campus, Davutpasa Street No. 127, Esenler, 34210 Istanbul, Turkey

Received 17 April 2014; Revised 16 July 2014; Accepted 18 July 2014; Published 13 August 2014

Academic Editor: You Song

Copyright © 2014 Azmi Seyhun Kipcak et al. 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.

Abstract

Magnesium borates are significant compounds due to their advanced mechanical and thermal durability properties. This group of minerals can be used in ceramic industry, in detergent industry, and as neutron shielding material, phosphor of thermoluminescence by dint of their extraordinary specialties. In the present study, the synthesis of magnesium borate via hydrothermal method from sodium borates and physical properties of synthesized magnesium borate minerals were investigated. The characterization of the products was carried out by X-ray diffraction XRD, Fourier transform infrared FT-IR and Raman spectroscopies, and differential thermal analysis and thermal gravimetry DTA-TG. The surface morphology was examined by scanning electron microscopy SEM. B2O3 content was determined through titration. The electrical resistivity-conductivity properties of products were measured by Picoammeter Voltage Source. UV-vis spectrometer was used to investigate optical absorption characteristics of synthesized minerals in the range 200–1000 nm at room temperature. XRD results identified the synthesized borate minerals as admontite MgOB2O33·7H2O with code number -01-076-0540- and mcallisterite Mg2B6O7OH62·9H2O with code number -01-070-1902.- The FT-IR and Raman spectra of the obtained samples were similar with characteristic magnesium borate bands. The investigation of the SEM images remarked that both nano- and microscale minerals were produced. The reaction yields were between 75.1 and 98.7%.





Autor: Azmi Seyhun Kipcak, Meral Yildirim, Sureyya Aydin Yuksel, Emek Moroydor Derun, and Sabriye Piskin

Fuente: https://www.hindawi.com/



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