Large-scale preparation and morphology-dependent photodegradation performances of monodispersed AgBr crystals

Qinghua Liang, Yao Shi, Wangjing Ma, Zhi Li, Xinmin Yang

科研成果: 期刊稿件文章同行评审

12 引用 (Scopus)

摘要

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.

源语言英语
页(从-至)199-205
页数7
期刊Applied Catalysis A: General
455
DOI
出版状态已出版 - 30 3月 2013
已对外发布

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