TY - JOUR
T1 - Large-scale preparation and morphology-dependent photodegradation performances of monodispersed AgBr crystals
AU - Liang, Qinghua
AU - Shi, Yao
AU - Ma, Wangjing
AU - Li, Zhi
AU - Yang, Xinmin
PY - 2013/3/30
Y1 - 2013/3/30
N2 - The physicochemical properties of semiconductor catalysts depend intensively on their morphologies. Herein, three typical AgBr catalysts with well-defined spherical, cubic and octahedral shape were synthesized in a large scale through a facile ion exchange procedure controlled by a computerized double-jet apparatus. The as-synthesized monodispersed AgBr crystals were systematically characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDS), powder X-ray diffraction (XRD), and UV-vis diffuse reflection spectra (DRS). To clarify the relationship between photodegradation activities and structures, photodegradation performances of the AgBr crystals were evaluated by the degradation of Rhodamine B (RhB) and methyl orange (MO) aqueous solution under visible-light irradiation. The results demonstrated that the octahedral AgBr crystals exposed with {1 1 1} facets exhibited the highest photodegradation efficiency. Consequently, the present work is going to be instructive to develop the high efficient AgBr and other semiconductor photocatalysts for practical applications in the future.
AB - The physicochemical properties of semiconductor catalysts depend intensively on their morphologies. Herein, three typical AgBr catalysts with well-defined spherical, cubic and octahedral shape were synthesized in a large scale through a facile ion exchange procedure controlled by a computerized double-jet apparatus. The as-synthesized monodispersed AgBr crystals were systematically characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDS), powder X-ray diffraction (XRD), and UV-vis diffuse reflection spectra (DRS). To clarify the relationship between photodegradation activities and structures, photodegradation performances of the AgBr crystals were evaluated by the degradation of Rhodamine B (RhB) and methyl orange (MO) aqueous solution under visible-light irradiation. The results demonstrated that the octahedral AgBr crystals exposed with {1 1 1} facets exhibited the highest photodegradation efficiency. Consequently, the present work is going to be instructive to develop the high efficient AgBr and other semiconductor photocatalysts for practical applications in the future.
KW - AgBr crystal
KW - Morphology-dependent
KW - Photoactivity
KW - Photodegradation
UR - http://www.scopus.com/inward/record.url?scp=84875993524&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2013.01.034
DO - 10.1016/j.apcata.2013.01.034
M3 - 文章
AN - SCOPUS:84875993524
SN - 0926-860X
VL - 455
SP - 199
EP - 205
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -