A novel BiFeO3 photocatalyst in the shape of uniform microspheres has been synthesized by solvothermal process assisted with chelating effect of citric acid. The higher photoactivity of this catalyst than that of BiFeO3 via solid-state reaction for methylene blue (MB) degradation under visible-light irradiation is owing to the high crystallization of perovskite-type BiFeO3, high surface area with hollow structure, narrow band gap energy of 2.1 eV, and the promotion of separation of photo-induced electrons and holes. Additionally, no decrease of activity after being reused repetitively for five times is indicative of the high hydrothermal stability of BiFeO3 particles without crystal phase transformation. (C) 2010 Elsevier B.V. All rights reserved.
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Univ San Francisco Quito, Colegio Ciencias & Ingn, Diego de Robles & Via Interocean 17-1200-841, Quito, EcuadorUniv San Francisco Quito, Colegio Ciencias & Ingn, Diego de Robles & Via Interocean 17-1200-841, Quito, Ecuador
Cadenbach, Thomas
Lascano, Luis
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Escuela Politec Nacl, Dept Fis, Fac Ciencias, Ladron de Guevara E11-253, Quito 170517, EcuadorUniv San Francisco Quito, Colegio Ciencias & Ingn, Diego de Robles & Via Interocean 17-1200-841, Quito, Ecuador
Lascano, Luis
Vera, Cesar Costa
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Escuela Politec Nacl, Dept Fis, Fac Ciencias, Ladron de Guevara E11-253, Quito 170517, EcuadorUniv San Francisco Quito, Colegio Ciencias & Ingn, Diego de Robles & Via Interocean 17-1200-841, Quito, Ecuador
Vera, Cesar Costa
Vizuete, Karla
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Univ Fuerzas Armadas ESPE, Ctr Nanociencia & Nanotecnol, Av Gral Ruminahui S-N,POB 171-5-231B, Sangolqui, EcuadorUniv San Francisco Quito, Colegio Ciencias & Ingn, Diego de Robles & Via Interocean 17-1200-841, Quito, Ecuador
Vizuete, Karla
Debut, Alexis
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Univ Fuerzas Armadas ESPE, Ctr Nanociencia & Nanotecnol, Av Gral Ruminahui S-N,POB 171-5-231B, Sangolqui, EcuadorUniv San Francisco Quito, Colegio Ciencias & Ingn, Diego de Robles & Via Interocean 17-1200-841, Quito, Ecuador
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Thiagarajar Coll, PG & Res Dept Chem, Madurai 625009, Tamil Nadu, IndiaThiagarajar Coll, PG & Res Dept Chem, Madurai 625009, Tamil Nadu, India
Raja, V. Ramasamy
Rosaline, D. Rani
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Thiagarajar Coll, PG & Res Dept Chem, Madurai 625009, Tamil Nadu, IndiaThiagarajar Coll, PG & Res Dept Chem, Madurai 625009, Tamil Nadu, India
Rosaline, D. Rani
Suganthi, A.
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Thiagarajar Coll, PG & Res Dept Chem, Madurai 625009, Tamil Nadu, India
Mother Teresa Womens Univ, Kodaikanal 624102, Tamil Nadu, IndiaThiagarajar Coll, PG & Res Dept Chem, Madurai 625009, Tamil Nadu, India
Suganthi, A.
Rajarajan, M.
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Madurai Kamaraj Univ, Madurai 625021, Tamil Nadu, IndiaThiagarajar Coll, PG & Res Dept Chem, Madurai 625009, Tamil Nadu, India