A green, reusable SERS film with high sensitivity for in-situ detection of thiram in apple juice

Hongbao Sun; Hai Liu; Yiyong Wu

doi:10.1016/j.apsusc.2017.04.159

A green, reusable SERS film with high sensitivity for in-situ detection of thiram in apple juice

Hongbao Sun
, Hai Liu^*
, Yiyong Wu

^*Corresponding author for this work

Harbin Institute of Technology

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

149 Scopus citations

Abstract

We report a green and reusable surface-enhanced Raman scattering (SERS) film based on PMMA/Ag NPs/graphene. By using this Raman substrate, the SERS signals of R6G were significantly enhanced reaching a minimum detectable concentration of 5 × 10 ⁻⁸ M, due to having lots of hot spots adhered backside to the exposed graphene. The SERS film can be used for in-situ monitoring of trace thiram in apple juice with a detection limit of 1 × 10 ⁻⁶ M (0.24 ppm), which is below the maximal residue limit (MRL) of 7 ppm in fruit prescribed by the U.S. Environmental Protection Agency (EPA). Furthermore, reusability studies show that the SERS film can be used repeatedly. In addition, the graphene-enhanced SERS technique shows great potential applications for the in-situ detection and identification of pesticide residues in environmental water, fruits and vegetables.

Original language	English
Pages (from-to)	704-709
Number of pages	6
Journal	Applied Surface Science
Volume	416
DOIs	https://doi.org/10.1016/j.apsusc.2017.04.159
State	Published - 15 Sep 2017
Externally published	Yes

Keywords

Ag nanoparticles
Flexible substrate
Graphene
In-situ detection
SERS
Thiram

Access to Document

10.1016/j.apsusc.2017.04.159

Cite this

@article{75c242b64e1844a6b5265c53753f3305,

title = "A green, reusable SERS film with high sensitivity for in-situ detection of thiram in apple juice",

abstract = " We report a green and reusable surface-enhanced Raman scattering (SERS) film based on PMMA/Ag NPs/graphene. By using this Raman substrate, the SERS signals of R6G were significantly enhanced reaching a minimum detectable concentration of 5 {\texttimes} 10 −8 M, due to having lots of hot spots adhered backside to the exposed graphene. The SERS film can be used for in-situ monitoring of trace thiram in apple juice with a detection limit of 1 {\texttimes} 10 −6 M (0.24 ppm), which is below the maximal residue limit (MRL) of 7 ppm in fruit prescribed by the U.S. Environmental Protection Agency (EPA). Furthermore, reusability studies show that the SERS film can be used repeatedly. In addition, the graphene-enhanced SERS technique shows great potential applications for the in-situ detection and identification of pesticide residues in environmental water, fruits and vegetables.",

keywords = "Ag nanoparticles, Flexible substrate, Graphene, In-situ detection, SERS, Thiram",

author = "Hongbao Sun and Hai Liu and Yiyong Wu",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = sep,

day = "15",

doi = "10.1016/j.apsusc.2017.04.159",

language = "英语",

volume = "416",

pages = "704--709",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - A green, reusable SERS film with high sensitivity for in-situ detection of thiram in apple juice

AU - Sun, Hongbao

AU - Liu, Hai

AU - Wu, Yiyong

PY - 2017/9/15

Y1 - 2017/9/15

N2 - We report a green and reusable surface-enhanced Raman scattering (SERS) film based on PMMA/Ag NPs/graphene. By using this Raman substrate, the SERS signals of R6G were significantly enhanced reaching a minimum detectable concentration of 5 × 10 −8 M, due to having lots of hot spots adhered backside to the exposed graphene. The SERS film can be used for in-situ monitoring of trace thiram in apple juice with a detection limit of 1 × 10 −6 M (0.24 ppm), which is below the maximal residue limit (MRL) of 7 ppm in fruit prescribed by the U.S. Environmental Protection Agency (EPA). Furthermore, reusability studies show that the SERS film can be used repeatedly. In addition, the graphene-enhanced SERS technique shows great potential applications for the in-situ detection and identification of pesticide residues in environmental water, fruits and vegetables.

AB - We report a green and reusable surface-enhanced Raman scattering (SERS) film based on PMMA/Ag NPs/graphene. By using this Raman substrate, the SERS signals of R6G were significantly enhanced reaching a minimum detectable concentration of 5 × 10 −8 M, due to having lots of hot spots adhered backside to the exposed graphene. The SERS film can be used for in-situ monitoring of trace thiram in apple juice with a detection limit of 1 × 10 −6 M (0.24 ppm), which is below the maximal residue limit (MRL) of 7 ppm in fruit prescribed by the U.S. Environmental Protection Agency (EPA). Furthermore, reusability studies show that the SERS film can be used repeatedly. In addition, the graphene-enhanced SERS technique shows great potential applications for the in-situ detection and identification of pesticide residues in environmental water, fruits and vegetables.

KW - Ag nanoparticles

KW - Flexible substrate

KW - Graphene

KW - In-situ detection

KW - SERS

KW - Thiram

UR - https://www.scopus.com/pages/publications/85018297208

U2 - 10.1016/j.apsusc.2017.04.159

DO - 10.1016/j.apsusc.2017.04.159

M3 - 文章

AN - SCOPUS:85018297208

SN - 0169-4332

VL - 416

SP - 704

EP - 709

JO - Applied Surface Science

JF - Applied Surface Science

ER -

A green, reusable SERS film with high sensitivity for in-situ detection of thiram in apple juice

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this