Crystalline metallic Au nanoparticle-loaded α-Bi(2)O(3) microrods for improved photocatalysis.
Summary of "Crystalline metallic Au nanoparticle-loaded α-Bi(2)O(3) microrods for improved photocatalysis."
Crystalline metallic Au nanoparticles were loaded on α-Bi(2)O(3) microrods (Au/α-Bi(2)O(3)) using an Au deposition-precipitation method. The prepared samples were characterized by scanning electron and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and UV-vis diffuse reflectance spectroscopy. Upon visible light irradiation, the Au/α-Bi(2)O(3) exhibits much higher photocatalytic activities than the pure α-Bi(2)O(3) for the degradation of Rhodamine B and 2,4-dichlorophenol in aqueous solution. The role of the Au and the paths of electron transport in the photocatalysis of the Au/α-Bi(2)O(3) were investigated and discussed in detail based on the analysis of the photo-generated hydroxyl radicals (˙OH) and hydrogen peroxide (H(2)O(2)) in the visible light irradiated suspension of pure α-Bi(2)O(3) and Au/α-Bi(2)O(3). The result reveals that the Au loaded on α-Bi(2)O(3) plays a critical role in the separation of the electron and hole pairs by accumulating the electrons from the excited α-Bi(2)O(3), which is responsible for the enhanced photocatalytic activity.
Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China. email@example.com.
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Name: Physical chemistry chemical physics : PCCP
Medical and Biotech [MESH] Definitions
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.
A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions for use in restorative or prosthetic dentistry.
Lens Nucleus, Crystalline
The core of the crystalline lens, surrounded by the cortex.
Use of a device (film badge) for measuring exposure of individuals to radiation. It is usually made of metal, plastic, or paper and loaded with one or more pieces of x-ray film.
Lens Cortex, Crystalline
The portion of the crystalline lens surrounding the nucleus and bound anteriorly by the epithelium and posteriorly by the capsule. It contains lens fibers and amorphous, intercellular substance.
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