<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kibanova, D.</style></author><author><style face="normal" font="default" size="100%">Mohamad Sleiman</style></author><author><style face="normal" font="default" size="100%">Javiera Cervini-Silva</style></author><author><style face="normal" font="default" size="100%">Hugo Destaillats</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adsorption and photocatalytic oxidation of formaldehyde on a clay-TiO2 composite</style></title><secondary-title><style face="normal" font="default" size="100%">J. Hazardous Materials</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">04/15/2012</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/22226716</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">212-212</style></volume><pages><style face="normal" font="default" size="100%">233-239</style></pages><abstract><style face="normal" font="default" size="100%">&lt;p&gt;We investigated the adsorption capacity and photocatalytic removal efficiency  of formaldehyde using a hectorite-TiO(2) composite in a bench flow reactor. The  same experimental conditions were applied to pure TiO(2) (Degussa P25) as a  reference. The catalysts were irradiated with either a UVA lamp (365 nm) or with  one of two UVC lamps of 254 nm and 254+185 nm, respectively. Formaldehyde was  introduced upstream at concentrations of 100-500 ppb, with relative humidity  (RH) in the range 0-66% and residence times between 50 and 500 ms. Under dry air  and without illumination, saturation of catalyst surfaces was achieved after ≈  200 min for P25 and ≈ 1000 min for hectorite-TiO(2). The formaldehyde uptake  capacity by hectorite-TiO(2) was 4.1 times higher than that of P25, almost twice  the BET surface area ratio. In the presence of humidity, the difference in  uptake efficiency between both materials disappeared, and saturation was  achieved faster (after ≈ 200 min at 10% RH and ≈ 60 min at 65% RH). Under  irradiation with each of the three UV sources, removal efficiencies were  proportional to the Ti content and increased with contact time. The removal  efficiency decreased at high RH. A more complete elimination of formaldehyde was  observed with the 254+185 nm UV source.&lt;/p&gt;</style></abstract></record></records></xml>