title: Photocatalytic degradation of RhB with microwave prepared PbMoO4.
abstract: Synthesized PbMoO4 from H2MoO4 and Pb(NO3)2 with microwaves was compared, in terms of its photocatalytic activity as catalyzer for decomposing rhodamine B (RhB), against samples prepared by hydrothermal and sonochemical methods from the same precursors. Microwave synthesis lasted 20 minutes; hydrothermal, 10 minutes and sonochemical method, 1 hour. Xrays diffraction patterns show that PbMoO4 prepared by these three routes is compounded by the same phase. It is found that microwave synthesized PbMoO4 particles are rounder, in an intermediate size (250 nm), compared to sonochemical (100 nm) and hydrothermal (500 nm) routes; microwave particles also exhibit higher photocatalytic activity for degradation of RhB under a xenon lamp. This difference is not explicable in terms of surface area measurements, but could be explained by UV Light scattering by the rounder particles produced by means of the microwave processing, which are about one half size compared to the wavelength.
authors.affiliation: Universidad Autònoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica, Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología, Av. Universidad s/n, Cd. Universitaria, San Nicolás de los Garza, NL 66450, México.
authors.forename: Diana B
authors.initials: DB
authors.lastname: Hernández-Uresti
authors.affiliation: Universidad Autònoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica, Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología, Av. Universidad s/n, Cd. Universitaria, San Nicolás de los Garza, NL 66450, México.
authors.forename: Juan A
authors.initials: JA
authors.lastname: Aguilar-Garib
authors.affiliation: Universidad Autònoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica, Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología, Av. Universidad s/n, Cd. Universitaria, San Nicolás de los Garza, NL 66450, México.
authors.forename: Azael
authors.initials: A
authors.lastname: Martínez-de la Cruz
mesh_terms: D002384:Catalysis / Q000528:radiation effects; D002516:Ceramics / Q000737:chemistry* / Q000528:radiation effects; D003198:Computer Simulation; D008027:Light; D008872:Microwaves; D008956:Models, Chemical; D010777:Photochemistry / Q000379:methods*; D011829:Radiation Dosage; D012235:Rhodamines / Q000737:chemistry / Q000302:isolation & purification / Q000528:radiation effects*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000302:isolation & purification / Q000528:radiation effects*; D018508:Water Purification / Q000379:methods*
chemical_list: D012235:Rhodamines; D014874:Water Pollutants, Chemical; C029773:rhodamine B