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Preparation and characterization of ultrafine nanoparticles of Cu doped lithium tetraborate


Khalilzadeh, Nasrin and Saion, Elias and Mirabolghasemi, Hamed and Crouse, Karen Anne and Shaari, Abdul Halim and Hashim, Mansor (2015) Preparation and characterization of ultrafine nanoparticles of Cu doped lithium tetraborate. Results in Physics, 5. pp. 324-330. ISSN 2211-3797


This study details an innovative single-step thermal synthesis of nano-sized lithium tetraborate doped with 0.1 %wt copper and its characterization. The heating temperature for the synthesis of the nanoparticle material was optimized by variation between 200 and 850 °C. The optimum amount of polyvinyl pyrrolidone (PVP) the capping agent was determined to be 0.027 mol per 1 g LTB-Cu. The calcination time was 2 h. Characterization of the samples was carried out using Thermogravimetry Analysis (TGA), Derivative Thermogravimetry (DTG), Differential Scanning Calorimetry (DSC), Fourier Transform Infrared (FTIR) Spectroscopy, X-ray diffractometer (XRD), transmission electron microscopy (TEM) and Ultraviolet–Visible (UV–Vis) spectroscopy. The product was thermally stable above 450 °C. FTIR, XRD and TEM results confirmed the formation of pure nano-crystalline copper doped lithium tetraborate between 450 and 750 °C. The optical bandgap was estimated to be 5.02–6.05 eV in the presence of different amounts of PVP at various calcination temperatures.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1016/j.rinp.2015.11.002
Publisher: Elsevier
Keywords: Cu doped lithium tetraborate nanoparticles; Single step thermal treatment; Slow separation nucleation
Depositing User: Nabilah Mustapa
Date Deposited: 05 Jun 2017 05:42
Last Modified: 05 Jun 2017 05:42
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.rinp.2015.11.002
URI: http://psasir.upm.edu.my/id/eprint/52312
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