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HomeJournal of Nano ResearchJournal of Nano Research Vol. 33Morphology-Controlled Synthesis of Single...

Morphology-Controlled Synthesis of Single Crystalline α-Mn₂O₃ Sea-Urchins Assembled with Pen-Type Nanoneedles and Broad Absorption Spectrum

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Abstract:

Single crystalline high quality α-Mn₂O₃ nanorods and sea-urchins assembled with pen-type nanoneedles have been successfully synthesized by template-free hydrothermal route. The variation in hydrothermal temperature has affected the morphology of the α-Mn₂O₃ sea-urchin assembled with the nanoneedles noticeably. The influence of temperature change on the thickness, crystallinity, surface morphology and optical properties of α-Mn₂O₃ has been characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX) analysis, Transmission Electron Microscopy (TEM), High Resolution Transmission Electron Microscopy (HRTEM), Raman Spectroscopy (RS) and UV-visible Spectroscopy. The results showed that in our experimental conditions, single crystalline nanorods of the α-Mn₂O₃ were obtained at a low temperature of 180 °C, while single crystalline sea-urchin assembled with pen-type nanoneedles were obtained by increasing the temperature to 280 °C. Nanorods and sea-urchin assembled with pen-type nanoneedles obtained had the well defined morphology and crystalline quality. The sea-urchin synthesized at 280 °C exhibited more than 90% absorption in UV-visible spectrum.

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Journal of Nano Research Vol. 33

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Periodical:

Journal of Nano Research (Volume 33)

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38-48

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https://doi.org/10.4028/www.scientific.net/JNanoR.33.38

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June 2015

Authors:

Qurat Ul Ain Javed, Hussain Abbas, Hasan Mahmood*, Abdul Sattar, Feng Ping Wang, Muhammad Arshad Kamran, M.Y. Rafique, A. Muhammad Toufiq

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Absorption Spectra, Alloys, Metals, Nanocrystalline Materials, Nanorods, Optical Spectroscopy, Raman Spectra, Raman Spectroscopy, Semimetals

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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