نتایج جستجو برای: ray absorption spectroscopy

تعداد نتایج: 546748  

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2002

Journal: :international journal of nano dimension 0
n. molahasani department of chemistry, tehran shargh branch, islamic azad university, tehran, iran. m. s. sadjadi department of chemistry, science and research branch, islamic azad university, tehran, iran. k. zare department of chemistry, science and research branch, islamic azad university, tehran, iran.

nanocrystalline zinc oxide (zno) powders with different morphology have been successfully synthesized by using different surfactants such as cetyl trimethyl ammonium bromide (ctab), sodium dodecyl sulphate (sds), and tri ethanol amine (tea) via hydrothermal method. the products were characterized by means of powder x-ray diffraction (xrd), scanning electron microscopy (sem), transmission electr...

Journal: :Acta Crystallographica Section A Foundations and Advances 2014

Journal: :Reviews in Mineralogy and Geochemistry 2014

Journal: :Crystals 2021

For the present work, calcite nanocrystals were grown by annealing precursors at 500 °C. These obtained three different thermal schemes. Among these schemes, two involve heating 100 °C for 16 h and + 24 h, respectively. In third scheme, was performed followed 300 h. X-ray diffraction studies, Fourier transform infrared Raman spectroscopic exhibited formation of phase calcium carbonate. Transmis...

Journal: :Journal of physics 2022

Abstract The existing setup for time-resolved quick-scanning X-ray absorption spectroscopy (QEXAFS) at beamline P64 the PETRA III storage ring is complemented by new infrastructure suited collection of diffraction data simultaneously to QEXAFS experiment. In particular, sinusoidal periodic movements quick-EXAFS mono-chromator are modified in such a way, that an energy plateau with approximately...

Journal: :Acta Crystallographica Section A Foundations and Advances 2017

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