A reusable bifunctional fluorescent sensor for the detection and removal of silver ions in aqueous solutions

Huijing Wu; Junhua Jia; Yufang Xu; Xuhong Qian; Weiping Zhu

doi:10.1016/j.snb.2018.01.241

A reusable bifunctional fluorescent sensor for the detection and removal of silver ions in aqueous solutions

Huijing Wu, Junhua Jia, Yufang Xu, Xuhong Qian, Weiping Zhu

East China University of Science and Technology

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

In this work, a novel bifunctional fluorescent sensor (FQ) was developed for simultaneous detection and removal of Ag⁺ in aqueous solutions by grafting a naphthalimide-based fluorescent probe onto the surface of the mesoporous silica nanoparticles. FQ exhibited good selectivity towards Ag⁺ in water samples, and showed 2.5-fold enhancement of fluorescence intensity with the addition of Ag⁺. Meanwhile, FQ showed a very good linearity at a low concentration of Ag⁺ with a detection limit of 7.2 × 10⁻⁶ M. In addition, FQ can also serve as an adsorbent for the removal of Ag⁺ in water samples with the maximal adsorption capacity of 14.8 mg g⁻¹. FQ can be regenerated easily by modulating the pH value of the aqueous solution, and can be recycled at least eight times. All results demonstrate that FQ has potential applications for the detection and removal of Ag⁺ in aqueous samples.

Original language	English
Pages (from-to)	59-66
Number of pages	8
Journal	Sensors and Actuators B: Chemical
Volume	265
DOIs	https://doi.org/10.1016/j.snb.2018.01.241
State	Published - 15 Jul 2018
Externally published	Yes

Keywords

Detection
Fluorescent sensor
Removal
Reusable
Silver ions

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10.1016/j.snb.2018.01.241

Cite this

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title = "A reusable bifunctional fluorescent sensor for the detection and removal of silver ions in aqueous solutions",

abstract = "In this work, a novel bifunctional fluorescent sensor (FQ) was developed for simultaneous detection and removal of Ag+ in aqueous solutions by grafting a naphthalimide-based fluorescent probe onto the surface of the mesoporous silica nanoparticles. FQ exhibited good selectivity towards Ag+ in water samples, and showed 2.5-fold enhancement of fluorescence intensity with the addition of Ag+. Meanwhile, FQ showed a very good linearity at a low concentration of Ag+ with a detection limit of 7.2 × 10−6 M. In addition, FQ can also serve as an adsorbent for the removal of Ag+ in water samples with the maximal adsorption capacity of 14.8 mg g−1. FQ can be regenerated easily by modulating the pH value of the aqueous solution, and can be recycled at least eight times. All results demonstrate that FQ has potential applications for the detection and removal of Ag+ in aqueous samples.",

keywords = "Detection, Fluorescent sensor, Removal, Reusable, Silver ions",

author = "Huijing Wu and Junhua Jia and Yufang Xu and Xuhong Qian and Weiping Zhu",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

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day = "15",

doi = "10.1016/j.snb.2018.01.241",

language = "英语",

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TY - JOUR

T1 - A reusable bifunctional fluorescent sensor for the detection and removal of silver ions in aqueous solutions

AU - Wu, Huijing

AU - Jia, Junhua

AU - Xu, Yufang

AU - Qian, Xuhong

AU - Zhu, Weiping

PY - 2018/7/15

Y1 - 2018/7/15

N2 - In this work, a novel bifunctional fluorescent sensor (FQ) was developed for simultaneous detection and removal of Ag+ in aqueous solutions by grafting a naphthalimide-based fluorescent probe onto the surface of the mesoporous silica nanoparticles. FQ exhibited good selectivity towards Ag+ in water samples, and showed 2.5-fold enhancement of fluorescence intensity with the addition of Ag+. Meanwhile, FQ showed a very good linearity at a low concentration of Ag+ with a detection limit of 7.2 × 10−6 M. In addition, FQ can also serve as an adsorbent for the removal of Ag+ in water samples with the maximal adsorption capacity of 14.8 mg g−1. FQ can be regenerated easily by modulating the pH value of the aqueous solution, and can be recycled at least eight times. All results demonstrate that FQ has potential applications for the detection and removal of Ag+ in aqueous samples.

AB - In this work, a novel bifunctional fluorescent sensor (FQ) was developed for simultaneous detection and removal of Ag+ in aqueous solutions by grafting a naphthalimide-based fluorescent probe onto the surface of the mesoporous silica nanoparticles. FQ exhibited good selectivity towards Ag+ in water samples, and showed 2.5-fold enhancement of fluorescence intensity with the addition of Ag+. Meanwhile, FQ showed a very good linearity at a low concentration of Ag+ with a detection limit of 7.2 × 10−6 M. In addition, FQ can also serve as an adsorbent for the removal of Ag+ in water samples with the maximal adsorption capacity of 14.8 mg g−1. FQ can be regenerated easily by modulating the pH value of the aqueous solution, and can be recycled at least eight times. All results demonstrate that FQ has potential applications for the detection and removal of Ag+ in aqueous samples.

KW - Detection

KW - Fluorescent sensor

KW - Removal

KW - Reusable

KW - Silver ions

UR - https://www.scopus.com/pages/publications/85044848802

U2 - 10.1016/j.snb.2018.01.241

DO - 10.1016/j.snb.2018.01.241

M3 - 文章

AN - SCOPUS:85044848802

SN - 0925-4005

VL - 265

SP - 59

EP - 66

JO - Sensors and Actuators B: Chemical

JF - Sensors and Actuators B: Chemical

ER -

A reusable bifunctional fluorescent sensor for the detection and removal of silver ions in aqueous solutions

Abstract

Keywords

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