<?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%">Barrocas, B.</style></author><author><style face="normal" font="default" size="100%">Sério, S.</style></author><author><style face="normal" font="default" size="100%">Rovisco, A.</style></author><author><style face="normal" font="default" size="100%">Y. Nunes</style></author><author><style face="normal" font="default" size="100%">Jorge, M.E. Melo</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">{Removal of rhodamine 6G dye contaminant by visible light driven immobilized Ca1⿿Ln MnO3 (Ln = Sm, Ho; 0.1 ⿤x⿤ 0.4) photocatalysts}</style></title><secondary-title><style face="normal" font="default" size="100%">Applied Surface Science</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Mixed-valence manganites films</style></keyword><keyword><style  face="normal" font="default" size="100%">Photocatalytic activities</style></keyword><keyword><style  face="normal" font="default" size="100%">RF-magnetron sputtering</style></keyword><keyword><style  face="normal" font="default" size="100%">Rhodamine 6G</style></keyword><keyword><style  face="normal" font="default" size="100%">Visible light irradiation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2016</style></year><pub-dates><date><style  face="normal" font="default" size="100%">jan</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/pii/S0169433215027658 https://linkinghub.elsevier.com/retrieve/pii/S0169433215027658</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">360</style></volume><pages><style face="normal" font="default" size="100%">798–806</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Visible-light-driven Ca1-xLnxMnO3 (Ln=Sm, Ho; 0.1≤x≤0.4) films were grown by RF- magnetron sputtering onto fused silica substrates. The effects of Ca2+ substitution for Ho3+ or Sm3+ in Ca1-xLnxMnO3 on the structural, morphological and photocatalytic properties for Rhodamine 6G dye degradation under visible light irradiation were investigated. XRD showed a pure typical perovskite phase for all the prepared films, except for Ca0.9Ho0.1MnO3 and a decrease of the crystallite size with the increase of the amount of ion substituted. SEM and AFM revealed that the films surface is dense, with low roughness. UV-vis spectroscopy indicated for the two series band gaps in the range of 1.6 - 2.8eV, being lower for the films containing holmium. The results showed that some Ca1-xHoxMnO3 and Ca1-xSmxMnO3 films present higher photocatalytic activity for Rh6G degradation in comparison with TiO2 films and for the same x value the Ho-films exhibited higher photocatalytic activity. For both films series the maximal degradation rate was obtained for x=0.2; above this content the degradation percentage exhibits a decreasing trend with the increase of Ho or Sm substitution, except for x=0.4 in the case of Ho system, which is observed again an increase in the degradation rate. The Rh6G photocatalytic degradation followed a pseudo first-order reaction kinetics. XRD and SEM of the used photocatalysts evidenced high photochemical stability.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">n/a</style></notes></record></records></xml>