NDLI: Luminescence functionalization of porous silica nanospheres by YVO<sub>4</sub>:Eu<sup>3+</sup> for the efficient recognition of λ-cyhalothrin in aqueous media

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Luminescence functionalization of porous silica nanospheres by YVO₄:Eu³⁺ for the efficient recognition of λ-cyhalothrin in aqueous media

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Analytical Methods Vol -5

Analytical Methods Vol -4

Analytical Methods Vol -3

Analytical Methods Vol -2

Analytical Methods Vol -1

Luminescence functionalization of porous silica nanospheres by YVO₄:Eu³⁺ for the efficient recognition of λ-cyhalothrin in aqueous media

Content Provider	Royal Society of Chemistry (RSC)
Author	Song, Zhilong Pan, Jianming Yan, Yongsheng Wei, Xiao Lin, Shuang Dai, Jiangdong Meng, Minjia Liu, Chunbo Yu, Ping Gao, Lin
Copyright Year	2014
Abstract	Porous silica nanospheres were fabricated using a facile surface-protected etching strategy. Polyvinylpyrrolidone (PVP) was used as a protecting polymer adsorbed on the surface of silica nanospheres and NaOH was employed as an etching agent. Owing to the protective action of PVP and inhomogeneous etching, mesopores were created in the silica nanospheres. Then, based on a simple and economical wet-chemical route, highly luminescent YVO4:Eu3+ nanocrystals were then integrated onto the nanospheres to form a highly luminescent mSiO2/YVO4:Eu3+ composite material. This material, which combined the mesoporous structure of SiO2 and the strong red luminescence property of YVO4:Eu3+, could be used as a novel optosensing system. The structure, morphology, porosity, and optical properties of the materials were well characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, N2 adsorption/desorption, and photoluminescence spectra, and the optical stability and effect of pH on mSiO2/YVO4:Eu3+ were also evaluated. It was observed that λ-cyhalothrin (LC) could quench the luminescence of mSiO2/YVO4:Eu3+ in a concentration-dependent manner, which was best described by a Stern–Volmer-type equation. This study therefore demonstrated that the composite material could be potentially used as a probe to monitor the residues of LC in water.
Starting Page	915
Ending Page	923
Page Count	9
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	6
Issue Number	3
Journal	Analytical Methods
DOI	10.1039/c3ay41677a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Chemical milling Infrared spectroscopy Luminescence Photoluminescence Polymer Polyvinylpyrrolidone PVP Scanning electron microscope Silicon dioxide Composite material X-ray crystallography Mesoporous material Transmission electron microscopy Fourier Adsorption PH Porosity Cyhalothrin
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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