Graphene quantum dots functionalized gold nanoparticles for sensitive electrochemical detection of heavy metal ions

Siong Luong Ting; Shu Jing Ee; Arundithi Ananthanarayanan; Kam Chew Leong; Peng Chen

doi:10.1016/j.electacta.2015.01.026

Graphene quantum dots functionalized gold nanoparticles for sensitive electrochemical detection of heavy metal ions

Siong Luong Ting, Shu Jing Ee, Arundithi Ananthanarayanan, Kam Chew Leong, Peng Chen^*

^*Corresponding author for this work

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

226 Citations (Scopus)

Abstract

Graphene quantum dots (GQDs) are emerging zero dimensional materials promising various novel applications due to their extraordinary physicochemical properties. In this work, novel conjugates of GQDs and gold nanoparticles (AuNPs) are synthesized and used for sensitive electrochemical detection of heavy metal ions (Hg²⁺ and Cu²⁺). Ultralow detection limit (0.02 nM with S/N = 6.25 for Hg²⁺ and 0.05 nM with S/N = 4.81 for Cu²⁺) and high sensitivity (2.47 μA/nM for Hg²⁺ and 3.69 μA/nM for Cu²⁺) have been achieved.

Original language	English
Pages (from-to)	7-11
Number of pages	5
Journal	Electrochimica Acta
Volume	172
DOIs	https://doi.org/10.1016/j.electacta.2015.01.026
Publication status	Published - Jun 12 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd.

ASJC Scopus Subject Areas

General Chemical Engineering
Electrochemistry

Keywords

Anodic stripping voltammetry
Gold nanoparticles
Graphene quantum dot
Heavy metal detection

Access to Document

10.1016/j.electacta.2015.01.026

Cite this

@article{ea33137a26f9496c81e73f07bde3dcd8,

title = "Graphene quantum dots functionalized gold nanoparticles for sensitive electrochemical detection of heavy metal ions",

abstract = "Graphene quantum dots (GQDs) are emerging zero dimensional materials promising various novel applications due to their extraordinary physicochemical properties. In this work, novel conjugates of GQDs and gold nanoparticles (AuNPs) are synthesized and used for sensitive electrochemical detection of heavy metal ions (Hg2+ and Cu2+). Ultralow detection limit (0.02 nM with S/N = 6.25 for Hg2+ and 0.05 nM with S/N = 4.81 for Cu2+) and high sensitivity (2.47 μA/nM for Hg2+ and 3.69 μA/nM for Cu2+) have been achieved.",

keywords = "Anodic stripping voltammetry, Gold nanoparticles, Graphene quantum dot, Heavy metal detection",

author = "Ting, {Siong Luong} and Ee, {Shu Jing} and Arundithi Ananthanarayanan and Leong, {Kam Chew} and Peng Chen",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd.",

year = "2015",

month = jun,

day = "12",

doi = "10.1016/j.electacta.2015.01.026",

language = "English",

volume = "172",

pages = "7--11",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Graphene quantum dots functionalized gold nanoparticles for sensitive electrochemical detection of heavy metal ions

AU - Ting, Siong Luong

AU - Ee, Shu Jing

AU - Ananthanarayanan, Arundithi

AU - Leong, Kam Chew

AU - Chen, Peng

PY - 2015/6/12

Y1 - 2015/6/12

N2 - Graphene quantum dots (GQDs) are emerging zero dimensional materials promising various novel applications due to their extraordinary physicochemical properties. In this work, novel conjugates of GQDs and gold nanoparticles (AuNPs) are synthesized and used for sensitive electrochemical detection of heavy metal ions (Hg2+ and Cu2+). Ultralow detection limit (0.02 nM with S/N = 6.25 for Hg2+ and 0.05 nM with S/N = 4.81 for Cu2+) and high sensitivity (2.47 μA/nM for Hg2+ and 3.69 μA/nM for Cu2+) have been achieved.

AB - Graphene quantum dots (GQDs) are emerging zero dimensional materials promising various novel applications due to their extraordinary physicochemical properties. In this work, novel conjugates of GQDs and gold nanoparticles (AuNPs) are synthesized and used for sensitive electrochemical detection of heavy metal ions (Hg2+ and Cu2+). Ultralow detection limit (0.02 nM with S/N = 6.25 for Hg2+ and 0.05 nM with S/N = 4.81 for Cu2+) and high sensitivity (2.47 μA/nM for Hg2+ and 3.69 μA/nM for Cu2+) have been achieved.

KW - Anodic stripping voltammetry

KW - Gold nanoparticles

KW - Graphene quantum dot

KW - Heavy metal detection

UR - http://www.scopus.com/inward/record.url?scp=84930818261&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84930818261&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2015.01.026

DO - 10.1016/j.electacta.2015.01.026

M3 - Article

AN - SCOPUS:84930818261

SN - 0013-4686

VL - 172

SP - 7

EP - 11

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Graphene quantum dots functionalized gold nanoparticles for sensitive electrochemical detection of heavy metal ions

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

Access to Document

Other files and links

Fingerprint

Cite this