Synthesis of cobalt porphyrin/Ti5NbO14 nanocomposite used as an ascorbic acid electrochemical detection material

Author:

Wu Shining12,Liu Lin12,Fan Zichun12,Ma Juanjuan12,Wang Haoran12,tong Zhiwei123ORCID

Affiliation:

1. School of Chemical Engineering, Jiangsu Ocean University, Lianyungang 222005, P. R. China

2. Jiangsu Key Laboratory of Function Control Technology for Advanced Materials, Jiangsu Ocean University, Lianyungang 222005, P. R. China

3. SORST, Japan Science and Technology Agency (JST), Kawaguchi Center Building 4-1-8, Kawaguchi-shi, Saitama 332-0012, Japan

Abstract

A novel layered nanocomposite CoTMPyP/Ti5[Formula: see text] was synthesized via exfoliation/restacking where cobalt porphyrin (CoTMPyP) was intercalated into exfoliated titanoniobate (Ti5[Formula: see text] nanosheets. The CoTMPyP/Ti5[Formula: see text] was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared (FTIR), and ultraviolet-visible absorption spectrscopy (UV–Vis). The morphology and structure analyses indicated that CoTMPyP/Ti5[Formula: see text] was synthesized successfully. The CoTMPyP was speculated to have been implanted with an angle of [Formula: see text] into the gallery of the Ti5[Formula: see text]. Electrochemical methods, including differential pulse voltammetry (DPV) and cyclic voltammetry (CV) were used to investigate the catalytic properties of CoTMPyP/Ti5[Formula: see text]. The cyclic voltammograms indicated that the CoTMPyP/Ti5[Formula: see text] exhibited excellent electrocatalysis of ascorbic acid (AA) in neutral phosphate buffered solution. The cyclic voltammograms further demonstrated an excellent diffusion-controlled electrochemical redox process. On the basis of the DPV analysis, the detection limit of AA was calculated to be [Formula: see text][Formula: see text]moL[Formula: see text][Formula: see text] within the concentration range from [Formula: see text] to [Formula: see text][Formula: see text]moL [Formula: see text].

Funder

Natural Science Foundation of Jiangsu Province

Lianyungang Science Project

The University Science Research Project of Jiangsu Province

The Jiangsu Marine Resources Development and Research Institute

Publisher

World Scientific Pub Co Pte Lt

Subject

General Materials Science

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