@article { ISI:000256603500023,
	title = {Controlled synthesis of ZnO from nanospheres to micro-rods and its gas sensing studies},
	journal = {Talanta},
	volume = {75},
	number = {5},
	year = {2008},
	month = {JUN},
	pages = {1315-1319},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>1D ZnO rods are synthesized using less explored hydrazine method. Here we find, besides being combustible hydrazine can also be used as a structure-directing agent. The ratio of zinc nitrate (ZN) to hydrazine is found to control the morphology of ZnO. At lower concentration of ZN as compared with hydrazine the morphology of ZnO is found to be spherical. As we increase the hydrazine content the morphology changes from spherical (diameter similar to 100 nm) to the elongated structures including shapes like Y, T as well dumbbell (diameter similar to 40 nm and length similar to 150 nm). Interestingly for more than 50\% of hydrazine ZnO micro-rods are formed. Such rods are of diameter similar to 120 mn having length of about 1 mu m for ZN to hydrazine ratio of 1:9, isolated as well as bundle of rods are seen in scanning electron microscopy (SEM). The X-ray diffraction (XRD) reveals the phase formation with average particle size of 37 nm as calculated using Scherrer{\textquoteright}s formula. The high-resolution transmission electron microscopy (HRTEM) is also done to confirm the d-spacing in ZnO. Gas sensing study for these samples shows high efficiency and selectivity towards LPG at all operating temperatures. Photoluminescence (PL) study for these samples is performed at room temperature to find potential application as photoelectric material. (C) 2008 Elsevier B.V. All rights reserved.</p>},
	keywords = {Hydrazine, LPG sensor, Nanostructures, photoluminescence, ZnO},
	issn = {0039-9140},
	doi = {10.1016/j.talanta.2008.01.063},
	author = {Navale, Shalaka C. and Gosavi, S. W. and Mulla, Imtiaz S.}
}
@article { ISI:000267159700033,
	title = {Investigations on Ru doped ZnO: strain calculations and gas sensing study},
	journal = {Sensors and Actuators B-Chemical},
	volume = {139},
	number = {2},
	year = {2009},
	month = {JUN},
	pages = {466-470},
	publisher = {ELSEVIER SCIENCE SA},
	address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND},
	abstract = {<p>Pure and ruthenium (Ru) doped nano-crystalline zinc oxide (ZnO) powders were synthesized by using well-known citrate gel route. Citric acid acts as a chelating agent and thus helps in the formation of nanoparticles. The detailed X-ray diffraction (XRD) studies using Hall equation reveal that in the nanoscale dimensions, incorporation of Ru modulates the lattice strain. It is interesting to note that on Ru doping, the compressive strain present in the undoped ZnO changes into tensile strain. We have tested the response of these specimens individually for reducing gases like H(2), LPG (liquefied petroleum gas), C(2)H(5)OH (ethanol), CO, acetone and oxidizing gases like NO, and Cl(2). Undoped ZnO responses perceptibly to LPG while Ru doped sample highly senses ethanol vapors. This might be due to either change in composition on Ru doping or/and difference between basicity of LPG and C(2)H(5)OH vapors. (C) 2009 Elsevier B.V. All rights reserved.</p>},
	keywords = {Citrate gel, Ethanol sensor, LPG sensor, Nanomaterials, ruthenium},
	issn = {0925-4005},
	doi = {10.1016/j.snb.2009.03.068},
	author = {Navale, Shalaka C. and Ravi, V. and Mulla, Imtiaz S.}
}
