Surface-enhanced Raman scattering analysis of perchlorate using silver nanofilms deposited on copper foils

Hao, Jumin; Xu, Zhonghou; Mei, Han; Xu, Shiyou; Meng, Xiaoguang

doi:10.1016/j.colsurfa.2010.06.010

Cited by 30 publications

(26 citation statements)

References 39 publications

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“…To solve this problem, two approaches have been used. One is to measure SERS spectra using samples air-dried on planar SERS substrates to deposit perchlorate onto nanostructured Ag or Au surfaces [22,29]. Another approach has been developed to chemically modify the SERS substrates, trapping and concentrating ClO 4 À anions onto Ag or Au surfaces [7,[30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Surface-enhanced Raman scattering of perchlorate on cationic-modified silver nanofilms – Effect of inorganic anions

Hao

Mei

Meng

et al. 2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Section: Introductionmentioning

confidence: 99%

Surface-enhanced Raman scattering of perchlorate on cationic-modified silver nanofilms – Effect of inorganic anions

Hao

Mei

Meng

et al. 2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…There are several literature reports of ClO 4 − detection by SERS at a detection limit lower than or equal to the 0.4‐μM level observed for the elevated Au ellipse dimer structures; for example, Hao et al [2012] report a detection limit of 5 µg l −1 (~0.05 μM) using cysteamine functionalized Ag films on roughened Cu foil . However, the performance of the elevated Au ellipse dimer architectures reported here was determined with a portable Raman instrument, as the ultimate goal of this approach is to demonstrate field‐scale measurements, which has inherently lower detection efficiency than the bench‐top Raman microscopes typically used in SERS measurements (see Supporting Information, Fig.…”

Section: Resultsmentioning

confidence: 83%

Trace‐level perchlorate analysis of impacted groundwater by elevated gold ellipse dimer nanoantenna surface‐enhanced Raman scattering

Jubb

Hatzinger

2016

J Raman Spectroscopy

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Perchlorate (ClO4−) contamination has received increased attention the past two decades because of health concerns from its impact on thyroid function coupled with its environmental ubiquity and persistence. Here we demonstrate the detection of ClO4− below micromolar (<1 × 10−6 moles l−1) levels using a portable Raman instrument integrated with novel elevated gold (Au) ellipse dimer nanoantenna surface enhanced Raman scattering (SERS) architectures. The ellipse dimer nanoantenna architectures demonstrate improved ClO4− detection limits over previously reported SERS substrates while maintaining good reproducibility. The impact of chloride (Cl−), nitrate (NO3−), and sulfate (SO42−) interferences on the detection efficiency is systematically evaluated; SO42− is found to exhibit the largest interference effect at low concentrations while at higher ion concentrations the interference effects among ions are similar. Additionally, ClO4− concentrations on the order of 1 mg l−1 are determined in groundwaters collected from an US Department of Defense Navy site demonstrating the applicability of these SERS architectures for the rapid, field detection of trace‐level ClO4− contamination within complex environmental samples. Copyright © 2016 John Wiley & Sons, Ltd.

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“…The Raman spectra of aqueous solution of R6G adsorbed on the substrate is weak. The method of sealing the Cu foil in a container and heating to deactivate the surface by slight oxidization reported to gear down the deposition of the Ag nanoperticles is time-consuming, ineffective and difficult to control the condition to insure the uniformity of the deactivation [7].…”

Section: Introductionmentioning

confidence: 99%

Silver nanoparticles aggregate on passivated copper foil for Surface-enhanced Raman scattering

Zhang

Chen

et al. 2013

The 8th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems

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Surface-enhanced Raman scattering (SERS), as a powerful tool of chemical and biological analysis, has been investigated extensively in recent years. In this work, the reduction of silver nitrate by copper foil in aqueous medium was used to prepare silver nanoparticles and a method of applying ultrasonic to passivate the copper foil in the sulfuric acid solution was proposed in order to regulate the deposition of the Ag nanoparticles. Analysis of the surface structure by a fieldemission scanning electron microscope (FESEM) revealed that the silver nanoparticles deposited on the passivated copper foil were more regular. SERS spectra of Rhodamine6G (R6G) adsorbed on these Ag-Cu substrates were studied and compared. It's found that the Ag-Cu substrate prepared with the Cu foil passivated by ultrasonic treatment has a significantly higher Raman signal sensitivity, better large-area uniformity, and 80% of original sensitivity was remained in 10 days of storage time in the air, indicating the substrates are fairly stable.

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Surface-enhanced Raman scattering analysis of perchlorate using silver nanofilms deposited on copper foils

Cited by 30 publications

References 39 publications

Surface-enhanced Raman scattering of perchlorate on cationic-modified silver nanofilms – Effect of inorganic anions

Surface-enhanced Raman scattering of perchlorate on cationic-modified silver nanofilms – Effect of inorganic anions

Trace‐level perchlorate analysis of impacted groundwater by elevated gold ellipse dimer nanoantenna surface‐enhanced Raman scattering

Silver nanoparticles aggregate on passivated copper foil for Surface-enhanced Raman scattering

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