Synthesis of plasmonic enhance sphere-like Ag/AgI/Bi5O7I photocatalysts with improved visible-light responsive activity under LED light irradiation
作者： and Peng Liu Yafei Zhang , Gangqiang Zhu , Jianzhi Gao , Runliang Zhu , Jian-hong Peng
DOI: 10.1007/S10854-016-6208-4
关键词:
摘要: Coupling surface plasmon with semiconductor has been demonstrated to be an efficient strategy for improving the photocatalytic performance of photocatalyst. The sphere-like Ag/AgI/Bi5O7I composites were synthesized by a hydrothermal-decomposition process, followed in-situ ion exchange reaction. Under LED lamp irradiation (400 < λ < 800 nm), as-prepared displayed great enhancement in activities degradation organic dyes (Rhodamine B and methyl orange), as compared pure orthorhombic phase Bi5O7I. scavenger test results indicated that photo-generated h+ would play important role pollutants. Moreover, nanocomposite generates high photoactivity cycling test. According experimental results, possible mechanism was also proposed. From our perspective, this advantage is mainly ascribed two aspects: (i) resonance effect Ag nanoparticles; (ii) highly separation electrons holes through closely contacted interfaces system.
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