01760nas a2200229   4500008004100000022001400041245007600055210006900131260007300200300001400273490000700287520096700294653001801261653001101279653001901290653001201309100002501321700002401346700002801370700002201398856011001420       2008                        eng d  a0167-577X00aFacile synthesis and gas sensing properties of nanotriangular tin oxide0 aFacile synthesis and gas sensing properties of nanotriangular ti  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV  a4328-43310 v623 a<p>In the present study we report a simple and convenient chemical route using pentaerythritol as a structure-directing agent for the synthesis of crystalline nanotriangular SnO2. We propose the scheme for the formation of nanotriangular structures wherein the preliminary spherical nanocrystallites are formed due to the low surface energy associated with them. These spherical nanocrystallites grow into the various linear intermediate shapes like Y, bi and tripods, which finally lead to the triangles, pyramids and bipyramids. Such variation in the structure occurs due to the structure directing pentaerythritol. These polycrystalline SnO2 nanomaterials with structural peculiarities were tested for the gas sensing characteristics. Their response towards ethanol vapor, H-2 and LPG were investigated. It was found to exhibit high response towards ethanol vapors at the operating temperature of 250 degrees C. (C) 2008 Elsevier B.V. All rights reserved.</p>10aNanomaterials10aOxides10aSemiconductors10asensors1 aDeshmukh, Rupali, G.1 aBadadhe, Satish, S.1 aVaishampayan, Mukta, V.1 aMulla, Imtiaz, S.  uhttps://library.ncl.res.in/content/facile-synthesis-and-gas-sensing-properties-nanotriangular-tin-oxide-001941nas a2200229   4500008004100000022001400041245008400055210006900139260010600208300001400314490000700328520108600335653002301421653002601444653001901470653001101489653002201500100002501522700002401547700002201571856011801593       2009                        eng d  a0025-540800aMicrowave-assisted synthesis and humidity sensing of nanostructured alpha-Fe2O30 aMicrowaveassisted synthesis and humidity sensing of nanostructur  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcMAY  a1179-11820 v443 a<p>Nanocrystalline alpha-Fe2O3 has been prepared on a large-scale by a facile microwave-assisted hydrothermal route from a solution of Fe(NO3)(3)center dot 9H(2)O and pentaerythritol. A systematic study of the morphology, crystallinity and oxidation state of Fe using different characterization techniques. Such as transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy was performed It reveals. that nanostructured alpha-Fe2O3 comprises bundles of nanorods with a rhombohedral crystalline Structure. The individual nanorod has 8-10 nm diameter and similar to 50 nm length. The as-prepared nanostructured alpha-Fe2O3 (sensor) gives selective response towards humidity. The sensor shows high sensitivity, fast linear response to change in the humidity with almost 100% reproducibility. The sensor works at room temperature and rejuvenates without heat treatment. The as-prepared nanostructured alpha-Fe2O3 appears to be a promising humidity sensing material with the potential for commercialization. (C) 2008 Elsevier Ltd. All rights reserved.</p>10aChemical synthesis10aElectrical properties10aNanostructures10aOxides10aX-ray diffraction1 aDeshmukh, Rupali, G.1 aBadadhe, Satish, S.1 aMulla, Imtiaz, S.  uhttps://library.ncl.res.in/content/microwave-assisted-synthesis-and-humidity-sensing-nanostructured-alpha-fe2o3-0