Structural study, photoluminescence, and photocatalytic activity of semiconducting BaZrO3:Bi nanocrystals

R. Borja-Urby; L. A. Díaz-Torres; P. Salas; E. Moctezuma; M. Vega; C. Ángeles-Chávez

doi:10.1016/j.mseb.2011.01.024

Structural study, photoluminescence, and photocatalytic activity of semiconducting BaZrO₃:Bi nanocrystals

R. Borja-Urby, L. A. Díaz-Torres, P. Salas, E. Moctezuma, M. Vega, C. Ángeles-Chávez

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

37 Citas (Scopus)

Resumen

Wide band gap nanocrystalline bismuth doped barium zirconate is synthesized by a facile hydrothermal method at 100 °C. The obtained cubic perovskites are characterized by powder X-ray diffraction (XRD), UV-VIS diffuse reflectance spectroscopy, photoluminescence (PL) spectroscopy, and photocatalytic activity. The estimated band gap in the 2.4-4.9 eV range, depending on Bi concentration, suggests nanocrystalline BaZrO₃:Bi as a useful visible-light activated photocatalyst under excitation wavelengths <800 nm. Displacement of main XRD pattern peaks suggest that bismuth ion mostly substitutes into Zr ⁴⁺ sites within the BaZrO₃ host lattice. It is found that BaZrO₃:Bi decomposes methylene blue (MB) under both UV and visible light irradiation. The photocatalyst efficiency depends strongly on Bi content and induced defects.

Idioma original	Inglés
Páginas (desde-hasta)	1382-1387
Número de páginas	6
Publicación	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volumen	176
N.º	17
DOI	https://doi.org/10.1016/j.mseb.2011.01.024
Estado	Publicada - 25 oct. 2011
Publicado de forma externa	Sí

Acceder al documento

10.1016/j.mseb.2011.01.024

Otros archivos y enlaces

Enlace a la publicación en Scopus

Citar esto

@article{a9cfd4da7490424cae7f4163103c8dcf,

title = "Structural study, photoluminescence, and photocatalytic activity of semiconducting BaZrO3:Bi nanocrystals",

abstract = "Wide band gap nanocrystalline bismuth doped barium zirconate is synthesized by a facile hydrothermal method at 100 °C. The obtained cubic perovskites are characterized by powder X-ray diffraction (XRD), UV-VIS diffuse reflectance spectroscopy, photoluminescence (PL) spectroscopy, and photocatalytic activity. The estimated band gap in the 2.4-4.9 eV range, depending on Bi concentration, suggests nanocrystalline BaZrO3:Bi as a useful visible-light activated photocatalyst under excitation wavelengths <800 nm. Displacement of main XRD pattern peaks suggest that bismuth ion mostly substitutes into Zr 4+ sites within the BaZrO3 host lattice. It is found that BaZrO3:Bi decomposes methylene blue (MB) under both UV and visible light irradiation. The photocatalyst efficiency depends strongly on Bi content and induced defects.",

keywords = "Barium zirconate, Bismuth, Nanocrystals, Photocatalyst",

author = "R. Borja-Urby and D{\'i}az-Torres, {L. A.} and P. Salas and E. Moctezuma and M. Vega and C. {\'A}ngeles-Ch{\'a}vez",

note = "Funding Information: One of the authors, R. Borja-Urby, thanks to CONACyT for its support through a scholarship grant 173046 for PhD studies at Centro de Investigaciones en Optica A.C.",

year = "2011",

month = oct,

day = "25",

doi = "10.1016/j.mseb.2011.01.024",

language = "Ingl{\'e}s",

volume = "176",

pages = "1382--1387",

journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",

issn = "0921-5107",

number = "17",

}

Structural study, photoluminescence, and photocatalytic activity of semiconducting BaZrO₃:Bi nanocrystals. / Borja-Urby, R.; Díaz-Torres, L. A.; Salas, P. et al.
En: Materials Science and Engineering B: Solid-State Materials for Advanced Technology, Vol. 176, N.º 17, 25.10.2011, p. 1382-1387.

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

TY - JOUR

T1 - Structural study, photoluminescence, and photocatalytic activity of semiconducting BaZrO3:Bi nanocrystals

AU - Borja-Urby, R.

AU - Díaz-Torres, L. A.

AU - Salas, P.

AU - Moctezuma, E.

AU - Vega, M.

AU - Ángeles-Chávez, C.

N1 - Funding Information: One of the authors, R. Borja-Urby, thanks to CONACyT for its support through a scholarship grant 173046 for PhD studies at Centro de Investigaciones en Optica A.C.

PY - 2011/10/25

Y1 - 2011/10/25

N2 - Wide band gap nanocrystalline bismuth doped barium zirconate is synthesized by a facile hydrothermal method at 100 °C. The obtained cubic perovskites are characterized by powder X-ray diffraction (XRD), UV-VIS diffuse reflectance spectroscopy, photoluminescence (PL) spectroscopy, and photocatalytic activity. The estimated band gap in the 2.4-4.9 eV range, depending on Bi concentration, suggests nanocrystalline BaZrO3:Bi as a useful visible-light activated photocatalyst under excitation wavelengths <800 nm. Displacement of main XRD pattern peaks suggest that bismuth ion mostly substitutes into Zr 4+ sites within the BaZrO3 host lattice. It is found that BaZrO3:Bi decomposes methylene blue (MB) under both UV and visible light irradiation. The photocatalyst efficiency depends strongly on Bi content and induced defects.

AB - Wide band gap nanocrystalline bismuth doped barium zirconate is synthesized by a facile hydrothermal method at 100 °C. The obtained cubic perovskites are characterized by powder X-ray diffraction (XRD), UV-VIS diffuse reflectance spectroscopy, photoluminescence (PL) spectroscopy, and photocatalytic activity. The estimated band gap in the 2.4-4.9 eV range, depending on Bi concentration, suggests nanocrystalline BaZrO3:Bi as a useful visible-light activated photocatalyst under excitation wavelengths <800 nm. Displacement of main XRD pattern peaks suggest that bismuth ion mostly substitutes into Zr 4+ sites within the BaZrO3 host lattice. It is found that BaZrO3:Bi decomposes methylene blue (MB) under both UV and visible light irradiation. The photocatalyst efficiency depends strongly on Bi content and induced defects.

KW - Barium zirconate

KW - Bismuth

KW - Nanocrystals

KW - Photocatalyst

UR - http://www.scopus.com/inward/record.url?scp=80052815468&partnerID=8YFLogxK

U2 - 10.1016/j.mseb.2011.01.024

DO - 10.1016/j.mseb.2011.01.024

M3 - Artículo

AN - SCOPUS:80052815468

SN - 0921-5107

VL - 176

SP - 1382

EP - 1387

JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

IS - 17

ER -