000166045 001__ 166045 000166045 005__ 20260119170325.0 000166045 0247_ $$2doi$$a10.1142/s1793292012500208 000166045 0248_ $$2sideral$$a129815 000166045 037__ $$aART-2012-129815 000166045 041__ $$aeng 000166045 100__ $$aTacchini, Ignacio 000166045 245__ $$aSwcnts as electron withdrawers in nanocrystalline anatase photocatalysts 000166045 260__ $$c2012 000166045 5060_ $$aAccess copy available to the general public$$fUnrestricted 000166045 5203_ $$aSingle-walled carbon nanotube (SWCNT)/anatase TiO2 composite materials were prepared by successive sol–gel and hydrothermal processes. The composites contained thin SWCNT bundles embedded in aggregates of ~ 12 nm anatase crystallites. A series of SWCNT/ TiO2 photocatalysts was prepared with various SWCNT contents; a SWCNT content of ~ 8 wt.% was found to be optimal for methylene blue (MB) degradation under combined UV/visible radiation. The optimized SWCNT/ TiO2 composite demonstrated substantially higher photocatalytic activity than pure nanocrystalline anatase (5.2 times) and Degussa P-25 TiO2 powder (2.7 times). The MB degradation and mineralization processes were separately evaluated and complete decomposition of MB was shown to take place. The presence of SWCNTs caused an increase in the visible light absorbance of TiO2 ; however, SWCNT/ TiO2 composites did not show any photocatalytic activity when the UV part of the UV/visible light source was filtered. Therefore SWCNTs worked as acceptors for the TiO2 photoexcited electrons, but did not act as sensitizers for TiO2 . 000166045 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000166045 590__ $$a1.167$$b2012 000166045 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b132 / 240 = 0.55$$c2012$$dQ3$$eT2 000166045 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b48 / 69 = 0.696$$c2012$$dQ3$$eT3 000166045 591__ $$aPHYSICS, APPLIED$$b76 / 128 = 0.594$$c2012$$dQ3$$eT2 000166045 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000166045 700__ $$0(orcid)0000-0001-8511-5218$$aTerrado, Eva 000166045 700__ $$0(orcid)0000-0002-3134-8566$$aAnsón-Casaos, Alejandro 000166045 700__ $$aMartínez, M. Teresa$$uUniversidad de Zaragoza 000166045 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química 000166045 773__ $$g07, 03 (2012), 1250020 [17 pp.]$$pNANO$$tNANO$$x1793-2920 000166045 8564_ $$s1220665$$uhttps://zaguan.unizar.es/record/166045/files/texto_completo.pdf$$yVersión publicada 000166045 8564_ $$s1500195$$uhttps://zaguan.unizar.es/record/166045/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000166045 909CO $$ooai:zaguan.unizar.es:166045$$particulos$$pdriver 000166045 951__ $$a2026-01-19-14:38:52 000166045 980__ $$aARTICLE