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Synthesis of nanocrystalline photoluminescent mullite using sacrificial cotton wool and filter paper templates
Author(s) -
Kool Arpan,
Thakur Pradip,
Bagchi Biswajoy,
Hoque Nur Amin,
Banerjee Somtirtha,
Das Sukhen
Publication year - 2017
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14995
Subject(s) - mullite , materials science , nanocrystalline material , fourier transform infrared spectroscopy , photoluminescence , differential thermal analysis , chemical engineering , microstructure , composite material , ceramic , nanotechnology , diffraction , optics , physics , optoelectronics , engineering
Abstract Nanocrystalline mullite has been synthesized by sintering of absorbed monophasic aluminosilicate precursors into cotton wool and filter paper cellulosic structures. Effects of molybdenum and tungsten doping on template mediated mullite at 1200°C and 1400°C have been investigated using differential thermal analysis ( DTA ), X‐ray diffraction analysis ( XRD ), Fourier transform infrared spectroscopy ( FTIR ) and field emission scanning electron micrographs ( FESEM ). Microstructures of the sintered samples revealed successful replication of cellulosic structure with the formation of dense mullite phases having grain diameter in the range of 50‐80 nm. Strong photoluminescence emissions in the UV and visible regions result from the oxygen vacancies and Al–O bonds present in mullite structures.