Enhanced Photocatalytic Activity of Cu_1.8Se/CuAgSe for Organic Pollutants under Visible and Near-Infrared Light

Abstract:

The Cu_1.8Se/CuAgSe nanostructure was synthesized by a simple two-step process. Starting with the template of cubic Cu_1.8Se nanoplate by precipitation method, Cu_1.8Se/CuAgSe nanostructure and ternary CuAgSe were prepared through a rapid ion exchange reaction using various amount of AgNO₃ at room temperature. The as-prepared samples were analyzed by XRD, SEM and DRS. It was found that Cu_1.8Se/CuAgSe heterostructure and the pure CuAgSe phase were formed without changing the morphology, and these samples had efficient light absorption from UV light to near-infrared light region. Photocatalytic properties of these samples were evaluated by the degradation of Congo red under visible and near-infrared light. The Cu_1.8Se/CuAgSe nanostructure showed enhanced photocatalytic activity due to the lower recombination of charge-carrier in the photodegradation process.

• Periodical: Solid State Phenomena (Volume 281)
• Pages: 825-829
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.281.825
• Online since: August 2018
• Authors: Li Na Qiao, Ming Rui Tang, Yong Yun Gang, M.H. Xu, Yuan Hua Lin*
• Keywords: Cu_1.8Se/CuAgSe, Near-Infrared Light, Photocatalysis, Visible Light

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