NDLI: One-step hydrothermal synthesis of the Ag/AgI heterojunction with highly enhanced visible-light photocatalytic performances

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The Journal of Engineering

One-step hydrothermal synthesis of the Ag/AgI heterojunction with highly enhanced visible-light photocatalytic performances

Content Provider	IET Digital Library
Author	Wang, Xinjun Wan, Xiaoli Li, Wuqi Chen, Xuenian
Abstract	The Ag/AgI heterojunction was prepared by a facile, one-step and low-temperature hydrothermal synthesis method with P, I2 and Ag2O. The approach proves a green and simple route to the products, which avoided multiple-step synthesis and the subsequent time-consuming photoreduction. The samples were carefully characterised by X-ray diffraction, X-ray photoelectronic spectra, scanning electron microscopy, transmission electron micrographs and ultraviolet–visible-light techniques. The results show that Ag nanoparticles were uniformly distributed on the surface of AgI and the heterostructure was formed. Under visible light, the photocatalytic activity of the Ag/AgI composites for the degradation of rhodamine B (RhB) was efficient and much higher than that of pure AgI. In particular, the Ag/AgI composites (at 120°C for 4 h) exhibited the best photocatalytic activity, and nearly 98% of RhB was degraded within 20 min. Remarkably, the photocatalytic degradation followed the pseudo-first-order reaction model and the corresponding apparent first-order rate constant of 0.157 min−1 which is five times more than that of pure AgI. The enhanced photocatalytic activity of Ag/AgI can be attributed to the strong surface plasmon resonances.
Starting Page	376
Ending Page	381
Page Count	6
Volume Number	9
e-ISSN	17500443
Issue Number	Issue 6, Jun (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/mnl/9/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/mnl.2014.0099
Journal	Micro & Nano Letters
Publisher Date	2014-05-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Agâˆ’AgI Auger Spectroscopy Catalysis Electron Spectroscopy For Chemical Analysis Heterogeneous Catalysis at SurFace And Other Surface Reactions Heterojunction Method of Nanofabrication And Processing Nanocomposite Nanofabrication Nanoparticle Nanotube And Nanostructured Material One-step Low-temperature Hydrothermal Synthesis Organic Compound Photocatalytic Degradation Photochemistry Photoelectron Photolysis And Photodissociation by IR Pseudofirst-order Reaction Model Rhodamine B Degradation Scanning Electron Microscopy Silver Compound Structure of Solid Clusters Temperature 120 C Time 4 H Transmission Electron MicroGraph Transmission Electron Microscopy Ultravioletâ€“visible-light Techniques UV And Visible Radiation Visible Light Photo Catalytic Activity X-Ray Diffraction X-Ray Photoelectron Spectroscopy X-Ray Photoelectronic Spectra
Content Type	Text
Resource Type	Article

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