Cerium(III) Ion Sensing Based on Graphene Quantum Dots Fluorescent Turn-Off

Foad Salehnia; Farnoush Faridbod; Amin Shiralizadeh Dezfuli; Mohammad Reza Ganjali; Parviz Norouzi

doi:10.1007/s10895-016-1962-5

Cerium(III) Ion Sensing Based on Graphene Quantum Dots Fluorescent Turn-Off

Foad Salehnia
, Farnoush Faridbod^*
, Amin Shiralizadeh Dezfuli
, Mohammad Reza Ganjali
, Parviz Norouzi

^*Corresponding author for this work

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

47 Citations (Scopus)

Abstract

In this work, graphene quantum dots (GQDs) was synthesized through hydrothermal method and used as a photoluminescent bulk nano-chemosensor for detection of Ce³⁺ ion in the aqueous solution. The synthesized GQD was characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-Visible absorption and fluorescence emission spectroscopy. The sheet diameters of the synthesized GQDs were mainly distributed in the range of 15–20 nm. The interactions of GQDs with common cations and lanthanide ions were studied by fluorescence spectroscopy. Among the tested cations, Ce³⁺ ions was able to quench the fluorescence emission intensity of the GQD selectively. This quenching can be attributed to a redox mechanism between Ce³⁺ ion on the GQDs surface.

Original language	English
Pages (from-to)	331-338
Number of pages	8
Journal	Journal of Fluorescence
Volume	27
Issue number	1
DOIs	https://doi.org/10.1007/s10895-016-1962-5
Publication status	Published - 1 Jan 2017
Externally published	Yes
MoE publication type	A1 Journal article-refereed

Funding

The authors thank the research council of University of Tehran for financial support of this work.

Keywords

Cerium ions
Fluorescence quenching
Graphene quantum dots
Nano-chemosensor

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title = "Cerium(III) Ion Sensing Based on Graphene Quantum Dots Fluorescent Turn-Off",

abstract = "In this work, graphene quantum dots (GQDs) was synthesized through hydrothermal method and used as a photoluminescent bulk nano-chemosensor for detection of Ce3+ ion in the aqueous solution. The synthesized GQD was characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-Visible absorption and fluorescence emission spectroscopy. The sheet diameters of the synthesized GQDs were mainly distributed in the range of 15–20 nm. The interactions of GQDs with common cations and lanthanide ions were studied by fluorescence spectroscopy. Among the tested cations, Ce3+ ions was able to quench the fluorescence emission intensity of the GQD selectively. This quenching can be attributed to a redox mechanism between Ce3+ ion on the GQDs surface.",

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author = "Foad Salehnia and Farnoush Faridbod and Dezfuli, \{Amin Shiralizadeh\} and Ganjali, \{Mohammad Reza\} and Parviz Norouzi",

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AU - Salehnia, Foad

AU - Faridbod, Farnoush

AU - Dezfuli, Amin Shiralizadeh

AU - Ganjali, Mohammad Reza

AU - Norouzi, Parviz

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N2 - In this work, graphene quantum dots (GQDs) was synthesized through hydrothermal method and used as a photoluminescent bulk nano-chemosensor for detection of Ce3+ ion in the aqueous solution. The synthesized GQD was characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-Visible absorption and fluorescence emission spectroscopy. The sheet diameters of the synthesized GQDs were mainly distributed in the range of 15–20 nm. The interactions of GQDs with common cations and lanthanide ions were studied by fluorescence spectroscopy. Among the tested cations, Ce3+ ions was able to quench the fluorescence emission intensity of the GQD selectively. This quenching can be attributed to a redox mechanism between Ce3+ ion on the GQDs surface.

AB - In this work, graphene quantum dots (GQDs) was synthesized through hydrothermal method and used as a photoluminescent bulk nano-chemosensor for detection of Ce3+ ion in the aqueous solution. The synthesized GQD was characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-Visible absorption and fluorescence emission spectroscopy. The sheet diameters of the synthesized GQDs were mainly distributed in the range of 15–20 nm. The interactions of GQDs with common cations and lanthanide ions were studied by fluorescence spectroscopy. Among the tested cations, Ce3+ ions was able to quench the fluorescence emission intensity of the GQD selectively. This quenching can be attributed to a redox mechanism between Ce3+ ion on the GQDs surface.

KW - Cerium ions

KW - Fluorescence quenching

KW - Graphene quantum dots

KW - Nano-chemosensor

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Cerium(III) Ion Sensing Based on Graphene Quantum Dots Fluorescent Turn-Off

Abstract

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Keywords

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