首页|Remarkable enhancement in dielectric constant and band gap shrinkage of hydrothermal grown fly ash waste derived zeolite nanoneedles
Remarkable enhancement in dielectric constant and band gap shrinkage of hydrothermal grown fly ash waste derived zeolite nanoneedles
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NSTL
Elsevier
Highly crystalline zeolite nanoneedles were synthesised using industrial fly ash waste particulates using hydrothermal method for the first time. X-Ray diffraction result confirmed the formation of 13X crystalline zeolite nanoneedles. Elemental analysis of zeolite was investigated using X-Ray fluorescence spectroscopy technique. HR-TEM exhibits the crystalline nanoneedles like morphology with length of 50-300 nm and diameter of 30-40 nm. In, UV-ViS study, absorption cut-off band at 264 nm and optical band gap of 2.8 eV were obtained. The zeolite nanoneedles exhibits high refractive index of 4.5 at 264 nm. Ultra high electrical dielectric constant of 99151 was observed at low frequency of range 30 Hz. Such high dielectric constant of fly ash derived zeolite nanoneedles was almost 2450 times higher than bulk zeolite. Our results demonstrate a green synthesis method of zeolites nanoneedles from fly ash. The present finding shows its potential application in charge storage, optoelectronics devices and molecular sieving.
NanomaterialsZeolitesDielectric propertiesOptical band gapTEMStructural property13XCOMPOSITESHYDROGENFILMS
NSTL
Elsevier
