@article { ISI:000227196900007,
	title = {Characterization of nanocrystalline anatase titania: an in situ HTXRD study},
	journal = {Thermochimica Acta},
	volume = {427},
	number = {1-2},
	year = {2005},
	month = {MAR},
	pages = {37-41},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Nanocrystalline titania was synthesized by the hydrolysis of titanium iso-propoxide using ultrasonication. The powder XRD patterns of the sample were recorded in static air and vacuum using a Philips X-pert Pro diffractometer equipped with a high-temperature attachment (HTK16) from room temperature (298 K) to 1173 K and were analyzed by the Rietveld refinement technique. The anatase to rutile phase transformation was observed at 1173 K for the data collected in static air. Only 3\% of anatase titania transformed to rutile when the experiments were carried out at H 73 K in vacuum. The phase transformation from anatase to rutile is accompanied by a continuous increase in the crystallite size of the anatase phase from 9 nm at room temperature to 28 nm at 873 K and then to 50 nm at 1173 K in air while the process of crystallite growth was suppressed in vacuum. A linear increase in the unit cell parameters {\textquoteleft}a{\textquoteright} and {\textquoteleft}c{\textquoteright}, and thus, an overall linear increase in the unit cell volume was observed as a function of temperature in static air as well as vacuum. The lattice and volume thermal expansion coefficients (TEC), alpha(a), alpha(c), and alpha(v) at 873 K are 8.57 x 10(-6), 8.71 x 10(-6) and 25.91 x 10(-6) K-1 in air and 18.01 x 10(-6), 14.95 x 10(-6) and 51.13 x 10(-6) K-1 in vacuum, respectively. (C) 2004 Elsevier B.V. All rights reserved.</p>},
	keywords = {Anatase, HTXRD, Rietveld refinement, rutile, thermal expansion coefficient, titania},
	issn = {0040-6031},
	doi = {10.1016/j.tca.2004.08.011},
	author = {Jagtap, Neelam and Bhagwat, Mahesh and Awati, Preeti and Ramaswamy, Veda}
}
@article { ISI:000324663100044,
	title = {Phase, size and shape transformation by fungal biotransformation of bulk TiO2},
	journal = {Chemical Engineering Journal},
	volume = {230},
	year = {2013},
	month = {AUG},
	pages = {367-371},
	publisher = {ELSEVIER SCIENCE SA},
	address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND},
	abstract = {<p>Nanosynthesis is an ever expanding frontier in recent years in view of its implications to many future technologies covering diverse fields. Considerable progress has been made realizing high quality synthesis of elemental nanomaterials as well as compounds as chemical, biological and physical routes. The issue of technologically viable large scale synthesis still continues to be a challenge. Here we demonstrate a novel environmentally friendly top down approach to nanosynthesis which exploits the strength and peculiarities of fungus based bioleaching in extracting radicals from compounds and then providing them with a reactive as well as capping environment. Thus protein capped nanoparticles of TiO2 (5-28 nm, circular and brookite phase) are formed directly from micron size (150-250 nm, disc shape, anatase phase) powder by exposing them to a medium of fungus Humicola sp. at just 50 degrees C. The fungus Humicola sp. is not only useful for the synthesis of nanoparticles but also for the transformation of shape, phase and size of TiO2. (C) 2013 Elsevier B.V. All rights reserved.</p>},
	keywords = {Anatase, Biotransformation, Brookite, humicola sp, TiO2},
	issn = {1385-8947},
	doi = {10.1016/j.cej.2013.06.091},
	author = {Khan, Shadab Ali and Ahmad, Absar}
}
