:Preparation of Au nanoparticles modified TiO2 nanotube array sensor and its application as chemical oxygen demand sensor论文

:Preparation of Au nanoparticles modified TiO2 nanotube array sensor and its application as chemical oxygen demand sensor论文

本文主要研究内容

作者(2019)在《Preparation of Au nanoparticles modified TiO2 nanotube array sensor and its application as chemical oxygen demand sensor》一文中研究指出:Au nanoparticles(AuNPs) were electrodeposited at the highly ordered anatase TiO2 nanotube array(TiO2 NA) electrode under sonicating, and the AuNP-TiO2 NA sensor was characterized by scanning electron microscope(SEM), X-ray photoelectron spectroscopy(XPS), X-ray diffraction(XRD). The photoelectrochemical experiments indicate the AuNP-TiO2 NA sensor has lower photoelectro-resistance,higher photoelectrocatalytical activity and stability than that of pure TiO2 NA sensor under the same conditions. The as-prepared sensor can be used for the determination of chemical oxygen demand(COD)in real samples, and the obtained results are comparable well with those of by standard K2Cr2O7 method.The method proposed is simple, fast, cost effective, and environmentally friendly.

Abstract

Au nanoparticles(AuNPs) were electrodeposited at the highly ordered anatase TiO2 nanotube array(TiO2 NA) electrode under sonicating, and the AuNP-TiO2 NA sensor was characterized by scanning electron microscope(SEM), X-ray photoelectron spectroscopy(XPS), X-ray diffraction(XRD). The photoelectrochemical experiments indicate the AuNP-TiO2 NA sensor has lower photoelectro-resistance,higher photoelectrocatalytical activity and stability than that of pure TiO2 NA sensor under the same conditions. The as-prepared sensor can be used for the determination of chemical oxygen demand(COD)in real samples, and the obtained results are comparable well with those of by standard K2Cr2O7 method.The method proposed is simple, fast, cost effective, and environmentally friendly.

论文参考文献

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  • 论文详细介绍

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