【摘 要】
：
An efficient visible light driven photocatalyst, gold nanoparticles(NPs) modified Bi VO_4(Au/Bi VO_4), has been synthesized by deposition-precipitation with ure
【机 构】
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School of Environmental Science and Engineering, Shanghai Jiao Tong University,Key Laboratory for Th
【出 处】
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Nano-Micro Letters
论文部分内容阅读
An efficient visible light driven photocatalyst, gold nanoparticles(NPs) modified Bi VO_4(Au/Bi VO_4), has been synthesized by deposition-precipitation with urea method. Au/Bi VO_4 exhibits enhanced photocatalytic activity for phenol degradation underλ>400 nm irradiation but negligible activity underλ>535 nm,indicating that the surface plasmon resonance(SPR) effect is too weak for organic photodegradation. According to the photoelectrochemical results of the porous powder electrodes of Bi VO_4 and Au/Bi VO_4, the SPR effect of Au NPs has been assessed. The role of Au NPs as electron sinks or sources, which is controllable by incident photon energy and applied potentials, has been discussed.
An efficient visible light driven photocatalyst, gold nanoparticles (NPs) modified Bi VO_4 (Au / Bi VO_4), has been synthesized by deposition-precipitation with urea method. Au / Bi VO_4 exhibits enhanced photocatalytic activity for phenol degradation under λ> 400 nm irradiation but negligible activity under λ> 535 nm, indicating that the surface plasmon resonance (SPR) effect is too weak for organic photodegradation. According to the photoelectrochemical results of porous powder electrodes of Bi VO_4 and Au / Bi VO_4, the SPR effect of Au NPs has been assessed. The role of Au NPs as electron sinks or sources, which is controllable by accident photon energy and applied potentials, has been discussed.
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