01482nas a2200253   4500008004100000022001400041245006700055210006500122260006900187300001200256490000700268520065100275653003600926653001800962653001400980653001400994100002101008700002201029700001601051700001801067700001801085700002201103856010301125       2005                        eng d  a0254-058400aNanostructured tin oxide: synthesis and gas-sensing properties0 aNanostructured tin oxide synthesis and gassensing properties  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcAUG  a384-3880 v923 a<p>Pure and Ru-doped nanostructured SnO2 sensing materials were synthesized using a modified Pechini route. Incorporation of Ru in SnO2 results in the reduction of particle size (8.3 nm) compared with that of the pure SnO2 (28.2 nm). Moreover, the sensor exhibited a reasonably good sensitivity towards both H-2 and liquified petroleum gas (LPG). The effect of Ru incorporation, operating temperature, and gas concentration on the structure, morphology, and sensitivity is discussed using the results of X-ray diffraction (XRD), and scanning electron microscopy (SEM) along with sensing performance. © 2005 Elsevier B.V. All rights reserved.</p>10ahydrogen and hydrocarbon sensor10aNanostructure10aruthenium10atin oxide1 aNiranjan, R., S.1 aHwang, Young, Kyu1 aKim, D., K.1 aJhung, S., H.1 aChang, J., S.1 aMulla, Imtiaz, S.  uhttps://library.ncl.res.in/content/nanostructured-tin-oxide-synthesis-and-gas-sensing-properties-001647nas a2200241   4500008004100000022001400041245008000055210006900135260006900204300001200273490000800285520084200293653001401135653001001149653001701159653001101176653001401187100002801201700002401229700001801253700002201271856011201293       2008                        eng d  a0254-058400aFe-doped SnO(2) nanomaterial: a low temperature hydrogen sulfide gas sensor0 aFedoped SnO2 nanomaterial a low temperature hydrogen sulfide gas  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcJUN  a230-2340 v1093 a<p>The effect of Fe-doping on the surface chemistry and gas-sensing properties of nanocrystalline tin oxide is analyzed. The pristine and Fe-doped SnO(2) are synthesized by the modified Pechini citrate route that produces around 40 and 18 nm sized nanoparticles, respectively. 1 at.% Fe-doped SnO(2) shows significantly high selectivity towards hydrogen sulfide gas with capability to detect even 10 ppm of hydrogen sulfide at room temperature, with change of about one order of magnitude in the resistance within 5-15 s. In comparison, pristine SnO(2) shows negligible response towards H(2)S at room temperature. The ideal response and recovery of Fe-doped SnO(2) at low concentration of gas suggests Fe-doped SnO(2) nanomaterial as a potential low cost, low temperature H(2)S gas sensor. (C) 2007 Elsevier B.V. All rights reserved.</p>10aFe-doping10aH(2)S10ananomaterial10aSensor10atin oxide1 aVaishampayan, Mukta, V.1 aDeshmukh, Rupah, G.1 aWalke, Pravin1 aMulla, Imtiaz, S.  uhttps://library.ncl.res.in/content/fe-doped-sno2-nanomaterial-low-temperature-hydrogen-sulfide-gas-sensor-001863nas a2200217   4500008004100000022001400041245006600055210006600121260006900187300001200256490000800268520113400276653001501410653001601425653002101441653001401462100002801476700002501504700002201529856009401551       2008                        eng d  a0925-400500aInfluence of Pd doping on morphology and LPG response of SnO20 aInfluence of Pd doping on morphology and LPG response of SnO2  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAY  a665-6720 v1313 a<p>In the present study nanocrystalline pristine and Pd-doped SnO2 (Pd:SnO2) with various mol% Pd have been synthesized by a modified Pechini citrate route. Transmission electron microscopy and X-ray powder diffraction studies were used to characterize the morphology, crystallinity, and structure of the SnO2 and Pd:SnO2. The response of the pristine SnO2 and Pd:SnO2 was studied towards different reducing gases. The 1.5 mol% Pd doping showed an enhanced response of 75 and 95% towards LPG at as low as 50 and 100 degrees C, respectively, which were quite large high value as compared with pristine SnO2 (38 and 35% at 50 and 100 degrees C, respectively). Structural characterization revealed that Pd doping reduced the crystallite size of SnO2 and helps in the formation of distinct spherical nanospheres at a calcinations temperature of 500 degrees C. Thus the increase in LPG response can be correlated with the spherical morphology, a decrease in the crystallite size (11 nm) due to doping with Pd as compared with the pristine SnO2 (26 nm) and main role of Pd as a catalyst. (c) 2008 Elsevier B.V. All rights reserved.</p>10aLPG sensor10ananospheres10apalladium doping10atin oxide1 aVaishampayan, Mukta, V.1 aDeshmukh, Rupali, G.1 aMulla, Imtiaz, S.  uhttps://library.ncl.res.in/content/influence-pd-doping-morphology-and-lpg-response-sno2-001813nas a2200277   4500008004100000022001400041245007000055210006400125260006900189300001400258490000800272520089200280653002401172653001801196653002901214653002001243653001401263100002101277700002401298700002501322700002301347700002201370700003001392700002001422856009301442       2008                        eng d  a0040-609000aRuO(2) doped SnO(2) nanobipyramids on Si (100) as a field emitter0 aRuO2 doped SnO2 nanobipyramids on Si 100 as a field emitter  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcJUL  a6388-63910 v5163 a<p>Thin films of RuO(2): SnO(2) nanobipyramids have been grown on silicon (100) flat substrates, and their field emission behavior has been investigated. The field emission experiments have been performed in parallel plate configuration. In this experiment, the onset field for 0. 1 gA/ cm 2 current density has been found to be 0.2 V/mu m. The Fowler-Nordheim plot shows non-linear nature typical that of a semiconductor. The field enhancement factor has been estimated to be 35,600 cm(-1), indicating that the field emission originates from the nanometric features of the emitter. The current stability recorded at a preset value of I tA is observed to be good. Our field emission results on RuO(2): SnO(2) nanobipyramids indicate that, RuO(2): SnO(2) nanobipyramids are a potential candidate for futuristic field emission based devices. (c) 2008 Elsevier B.V. All rights reserved.</p>10adoped semiconductor10afield emitter10afield enhancement factor10aruthenium oxide10atin oxide1 aBhise, Ashok, B.1 aLate, Dattatray, J.1 aRamgir, Niranjan, S.1 aMore, Mahendra, A.1 aMulla, Imtiaz, S.1 aPillai, Vijayamohanan, K.1 aJoag, Dilip, S.  uhttps://library.ncl.res.in/content/ruo2-doped-sno2-nanobipyramids-si-100-field-emitter-0