Fluorescence Sensing of Nitrite Ions on Polyvinylpyrrolidone/Zinc Oxide Composites Prepared by Impregnation Method

4th International Conference on Advanced Materials Science and Technology

Yuliati, L.^1,2 ; So'Ad, S.Z.M.^3 ; Alim, N.S.^3 ; Lintang, H.O.^1,2

Ma Chung Research Center for Photosynthetic Pigments, Universitas Ma Chung, East Java, Malang

65151, Indonesia^1

Centre for Sustainable Nanomaterials, Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, Johor, Johor Bahru

81310, Malaysia^2

Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Johor Bahru

81310, Malaysia^3

关键词: Diffuse reflectance;    Fluorescence sensing;    Fluorescence sensors;    Fourier transform infrared;    Impregnation methods;    Nitrite ion;    Poly vinyl pyrrolidone;    Sensing performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/202/1/012086/pdf
DOI  :  10.1088/1757-899X/202/1/012086

来源: IOP

【 摘 要 】

A series of polyvinylpyrrolidone/zinc oxide (PVP/ZnO) composites with different loading amounts of PVP was prepared by an impregnation method. Successful formation of the composites was analyzed by the Fourier transform infrared (FTIR), diffuse reflectance ultraviolet-visible (DR UV-Vis) and fluorescence spectroscopies. Prepared composites were then further tested as fluorescence sensors by conducting quenching studies in the presence of nitrite ions (NO2-). Among the prepared composites, the ZnO with 1% PVP exhibited the highest sensing performance for the NO2-detection (Ksv= 0.07 μM-1). The efficiency of the composite was ca. 1.7 and 1.4 times higher than the bare ZnO and the best composite prepared by the physical mixing method, respectively. These results suggested that impregnation method is a suitable method to prepare the PVP/ZnO composites as fluorescence sensor for the NO2-detection.