scholarly journals Facile Detection and Quantification of Acetamiprid Using a Portable Raman Spectrometer Combined with Self-Assembled Gold Nanoparticle Array

Chemosensors ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 327
Author(s):  
Panxue Wang ◽  
Yan Sun ◽  
Li Wang ◽  
Xiang Li ◽  
Miaomiao Liu ◽  
...  

Rapid and facile determination of pesticides is critically important in food and environmental monitoring. This study developed a self-assembled gold nanoparticle array based SERS method for highly specific and sensitive detection of acetamiprid, a neonicotinoid pesticide that used to be difficult in SERS analysis due to its low affinity with SERS substrates. SERS detection and quantification of acetamiprid was conducted with self-assembled gold nanoparticle arrays at the interface of chloroform and water as the enhancing substrate. Since targets dissolved in chloroform (organic phase) also have access to the hot-spots of Au NP array, the developed method exhibited good sensitivity and specificity for acetamiprid determination. Under the optimal conditions, SERS intensities at Raman shifts of 631 cm−1 and 1109 cm−1 displayed a good linear relationship with the logarithm concentration of acetamiprid in the range of 5.0 × 10−7 to 1.0 × 10−4 mol/L (0.11335 ppm to 22.67 ppm), with correlation coefficients of 0.97972 and 0.97552, respectively. The calculated LOD and LOQ of this method were 1.19 × 10−7 mol/L (0.265 ppb) and 2.63 × 10−7 mol/L (0.586 ppb), respectively, using SERS signal at 631 cm−1, and 2.95 × 10−7 mol/L (0.657 ppb) and 3.86 × 10−7 mol/L (0.860 ppb) using SERS signal at 1109 cm−1, respectively. Furthermore, the developed SERS method was successfully applied in determining acetamiprid on the surface of apple and spinach. This method offers an exciting opportunity for rapid detection of acetamiprid and other organic pesticides considering its advantages of simple preparation process, good specificity and sensitivity, and short detection time (within 1 h).

2019 ◽  
Vol 7 (33) ◽  
pp. 10179-10186 ◽  
Author(s):  
Weiwei Li ◽  
Lei Xiong ◽  
Nianci Li ◽  
Shuo Pang ◽  
Guoliang Xu ◽  
...  

We demonstrate tunable 3D light trapping (up to ∼96%) architectures based on the SnSe2 nanoplate arrays (NPAs) via self-assembled growth and high performance (EF: 6.33 × 106, LOD: 1 × 10−12 M) SERS substrates based on SnSe2 NPAs.


2019 ◽  
Vol 21 (19) ◽  
pp. 10146-10151
Author(s):  
Dániel Péter Szekrényes ◽  
Szilárd Pothorszky ◽  
Dániel Zámbó ◽  
András Deák

Spatial arrangement of self-assembled gold nanosphere/nanorod heterodimers and their reorgaization upon drying detected using polarization-resolved scattering spectroscopy.


2003 ◽  
Vol 107 (30) ◽  
pp. 7406-7413 ◽  
Author(s):  
Yvonne Joseph ◽  
Isabelle Besnard ◽  
Miriam Rosenberger ◽  
Berit Guse ◽  
Heinz-Georg Nothofer ◽  
...  

2021 ◽  
pp. 131914
Author(s):  
Zizhen Yu ◽  
Li Jiang ◽  
Rongyang Liu ◽  
Weidan Zhao ◽  
Ziheng Yang ◽  
...  

2015 ◽  
Vol 39 (4) ◽  
pp. 2839-2846 ◽  
Author(s):  
Elias de Barros Santos ◽  
Natiara Vaughn Madalossi ◽  
Fernando Aparecido Sigoli ◽  
Italo Odone Mazali

Plasmonic silver nanoparticles synthesized using citrus peel extracts exhibit SERS activity for different Raman probe molecules.


Langmuir ◽  
1998 ◽  
Vol 14 (19) ◽  
pp. 5425-5429 ◽  
Author(s):  
Mathias Brust ◽  
Donald Bethell ◽  
Christopher J. Kiely ◽  
David J. Schiffrin

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4076 ◽  
Author(s):  
June Hwang ◽  
Minyang Yang

Surface-enhanced Raman spectroscopy (SERS) is a promising analytical tool due to its label-free detection ability and superior sensitivity, which enable the detection of single molecules. Since its sensitivity is highly dependent on localized surface plasmon resonance, various methods have been applied for electric field-enhanced metal nanostructures. Despite the intensive research on practical applications of SERS, fabricating a sensitive and reproducible SERS sensor using a simple and low-cost process remains a challenge. Here, we report a simple strategy to produce a large-scale gold nanoparticle array based on laser interference lithography and the electrophoretic deposition of gold nanoparticles, generated through a pulsed laser ablation in liquid process. The fabricated gold nanoparticle array produced a sensitive, reproducible SERS signal, which allowed Rhodamine 6G to be detected at a concentration as low as 10−8 M, with an enhancement factor of 1.25 × 105. This advantageous fabrication strategy is expected to enable practical SERS applications.


2018 ◽  
Vol 6 (18) ◽  
pp. 8419-8429 ◽  
Author(s):  
Weijing Shao ◽  
Zhiqiang Liang ◽  
Tianfu Guan ◽  
Jianmei Chen ◽  
Zhifang Wang ◽  
...  

Well-dispersed Au NPs arrays with multiple morphology are integrated on a TiO2thin filmviaa facile sonochemical approach, which exhibit a broadened absorption band, and enable a noticeable enhancement in device performance of organic photovoltaics.


Sign in / Sign up

Export Citation Format

Share Document