01942nas a2200253   4500008004100000022001400041245008500055210006900140260007300209300001200282490000800294520100000302653005101302653001701353653003101370653002601401653002001427100002201447700002001469700002701489700002501516700002901541856011801570       2011                        eng d  a0927-775700aTiO2 nanoparticle size dependence of porosity, adsorption and catalytic activity0 aTiO2 nanoparticle size dependence of porosity adsorption and cat  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUN  a195-2000 v3853 a<p>The issue of size-sensitivity of the surface properties of anatase TiO2 is addressed by examining three samples synthesized by aqueous sol-gel method having different particle sizes on the nanoscale (8-19 nm). A number of characterization methods, namely, X-ray powder diffractometry, infrared spectroscopy, UV-vis diffuse reflectance spectroscopy, sorptiometry and electron microscopy are employed. The data obtained reveal interrelated dependencies of the surface area, porosity, nitrogen and pyridine adsorption capacity and strength, and catalytic methylbutynol decomposition activity on the size of titania nanoparticles. Pertinent size-dependent bulk properties are also revealed and used to account for the changes conceded by the surface properties. Accordingly, going from 19 to 8-nm sized titania particles has been found to stabilize the anatase structure, weaken the surface acidity, and blueshift the UV absorption edge of titania. (C) 2011 Elsevier B.V. All rights reserved.</p>10aCatalytic methylbutynol decomposition activity10aNano-titania10aParticle size dependencies10aPyridine sorptiometry10aSurface texture1 aZaki, Mohamed, I.1 aFouad, Nasr, E.1 aMekhemer, Gamal, A. H.1 aJagadale, Tushar, C.1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/tio2-nanoparticle-size-dependence-porosity-adsorption-and-catalytic-activity-0