A small molecular fluorescent sensor functionalized silica microsphere for detection and removal of mercury, cadmium, and lead ions in aqueous solutions

Yu Ding; Weiping Zhu; Yufang Xu; Xuhong Qian

doi:10.1016/j.snb.2015.05.113

A small molecular fluorescent sensor functionalized silica microsphere for detection and removal of mercury, cadmium, and lead ions in aqueous solutions

Yu Ding, Weiping Zhu, Yufang Xu, Xuhong Qian

East China University of Science and Technology

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

74 Scopus citations

Abstract

In this paper, we report a sensitive fluorescent sensor (FSCHP) for detection and removal of toxic metal ions (Cd²⁺, Hg²⁺ and Pb²⁺) in aqueous samples. FSCHP is a 2,2-dipicolylamine (DPA) modified naphthalimide fluorophore followed by immobilization to the surface of silica microsphere and support high affinity for Cd²⁺, Hg²⁺ and Pb²⁺. Metal adsorption by FSCHP was featured by an enhancement in its fluorescence intensity. The limit of detection of 36 nM for Cd²⁺, 48 nM for Hg²⁺, and 39 nM for Pb²⁺, was measured respectively. Moreover, FSCHP can also be used as adsorbent for the separation of toxic metal ions in the contaminated aqueous solution with high adsorptivity, and can be regenerated by acid treatment. The metal ion removal capacity of FSCHP was retained after five removal/regeneration cycles.

Original language	English
Pages (from-to)	762-771
Number of pages	10
Journal	Sensors and Actuators B: Chemical
Volume	220
DOIs	https://doi.org/10.1016/j.snb.2015.05.113
State	Published - 25 Jun 2015
Externally published	Yes

Keywords

Detection
Fluorescent sensor
Heavy metal ions
Removal
Reusable

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10.1016/j.snb.2015.05.113

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title = "A small molecular fluorescent sensor functionalized silica microsphere for detection and removal of mercury, cadmium, and lead ions in aqueous solutions",

abstract = "In this paper, we report a sensitive fluorescent sensor (FSCHP) for detection and removal of toxic metal ions (Cd2+, Hg2+ and Pb2+) in aqueous samples. FSCHP is a 2,2-dipicolylamine (DPA) modified naphthalimide fluorophore followed by immobilization to the surface of silica microsphere and support high affinity for Cd2+, Hg2+ and Pb2+. Metal adsorption by FSCHP was featured by an enhancement in its fluorescence intensity. The limit of detection of 36 nM for Cd2+, 48 nM for Hg2+, and 39 nM for Pb2+, was measured respectively. Moreover, FSCHP can also be used as adsorbent for the separation of toxic metal ions in the contaminated aqueous solution with high adsorptivity, and can be regenerated by acid treatment. The metal ion removal capacity of FSCHP was retained after five removal/regeneration cycles.",

keywords = "Detection, Fluorescent sensor, Heavy metal ions, Removal, Reusable",

author = "Yu Ding and Weiping Zhu and Yufang Xu and Xuhong Qian",

year = "2015",

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doi = "10.1016/j.snb.2015.05.113",

language = "英语",

volume = "220",

pages = "762--771",

journal = "Sensors and Actuators B: Chemical",

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TY - JOUR

T1 - A small molecular fluorescent sensor functionalized silica microsphere for detection and removal of mercury, cadmium, and lead ions in aqueous solutions

AU - Ding, Yu

AU - Zhu, Weiping

AU - Xu, Yufang

AU - Qian, Xuhong

PY - 2015/6/25

Y1 - 2015/6/25

N2 - In this paper, we report a sensitive fluorescent sensor (FSCHP) for detection and removal of toxic metal ions (Cd2+, Hg2+ and Pb2+) in aqueous samples. FSCHP is a 2,2-dipicolylamine (DPA) modified naphthalimide fluorophore followed by immobilization to the surface of silica microsphere and support high affinity for Cd2+, Hg2+ and Pb2+. Metal adsorption by FSCHP was featured by an enhancement in its fluorescence intensity. The limit of detection of 36 nM for Cd2+, 48 nM for Hg2+, and 39 nM for Pb2+, was measured respectively. Moreover, FSCHP can also be used as adsorbent for the separation of toxic metal ions in the contaminated aqueous solution with high adsorptivity, and can be regenerated by acid treatment. The metal ion removal capacity of FSCHP was retained after five removal/regeneration cycles.

AB - In this paper, we report a sensitive fluorescent sensor (FSCHP) for detection and removal of toxic metal ions (Cd2+, Hg2+ and Pb2+) in aqueous samples. FSCHP is a 2,2-dipicolylamine (DPA) modified naphthalimide fluorophore followed by immobilization to the surface of silica microsphere and support high affinity for Cd2+, Hg2+ and Pb2+. Metal adsorption by FSCHP was featured by an enhancement in its fluorescence intensity. The limit of detection of 36 nM for Cd2+, 48 nM for Hg2+, and 39 nM for Pb2+, was measured respectively. Moreover, FSCHP can also be used as adsorbent for the separation of toxic metal ions in the contaminated aqueous solution with high adsorptivity, and can be regenerated by acid treatment. The metal ion removal capacity of FSCHP was retained after five removal/regeneration cycles.

KW - Detection

KW - Fluorescent sensor

KW - Heavy metal ions

KW - Removal

KW - Reusable

UR - https://www.scopus.com/pages/publications/84934929696

U2 - 10.1016/j.snb.2015.05.113

DO - 10.1016/j.snb.2015.05.113

M3 - 文章

AN - SCOPUS:84934929696

SN - 0925-4005

VL - 220

SP - 762

EP - 771

JO - Sensors and Actuators B: Chemical

JF - Sensors and Actuators B: Chemical

ER -

A small molecular fluorescent sensor functionalized silica microsphere for detection and removal of mercury, cadmium, and lead ions in aqueous solutions

Abstract

Keywords

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