In Situ Raman Spectroscopy for Early Corrosion Detection in Coated AA2024-T3 DOI Creative Commons

Adrienne K. Delluva,

Ronald L. Cook,

Matt Peppel

et al.

Sensors, Journal Year: 2024, Volume and Issue: 25(1), P. 179 - 179

Published: Dec. 31, 2024

Here we describe the synthesis and evaluation of a molecular corrosion sensor that can be applied in situ aerospace coatings, then used to detect after coating has been applied. A pH-sensitive molecule, 4-mercaptopyridin (4-MP), is attached gold nanoparticle allow surface-enhanced Raman-scattering (SERS) for signal amplification. These SERS nanoparticles, when combined with an appropriate micron-sized carrier system, are incorporated directly into MIL-SPEC monitor process onset progression using pH changes occurring at metal–coating interface. The track spatially as it proceeds underneath coating, due mobility proton front generated during homogeneous distribution layer. To our knowledge, this report first time 4-MP functionalized used, along spectroscopy, commercial fast, non-contact way.

Language: Английский

Design, Fabrication, and Applications of SERS Substrates for Food Safety Detection: Review DOI Creative Commons
Ding-Yan Lin, C. Yu, Chin-An Ku

et al.

Micromachines, Journal Year: 2023, Volume and Issue: 14(7), P. 1343 - 1343

Published: June 30, 2023

Sustainable and safe food is an important issue worldwide, it depends on cost-effective analysis tools with good sensitivity reality. However, traditional standard chemical methods of safety detection, such as high-performance liquid chromatography (HPLC), gas (GC), tandem mass spectrometry (MS), have the disadvantages high cost long testing time. Those prevented people from obtaining sufficient risk information to confirm their products. In addition, testing, bioassay method, often results in false positives or negatives due little rigor preprocessing samples. So far, currently relies enzyme-linked immunosorbent assay (ELISA), polymerase chain reaction (PCR), HPLC, GC, UV-visible spectrophotometry, MS, all which require significant time train qualified laboratory operators. These factors hindered development rapid monitoring systems, especially remote areas a relative lack resources. Surface-enhanced Raman spectroscopy (SERS) has emerged one choice for that can overcome these dilemmas over past decades. SERS offers advantages chromatographic its portability, non-destructive nature, lower implications. stands, supplemental tool analysis, reinforcing enhancing completeness coverage system. combines portability cheaper detection costs gain advantage analysis. encountered many challenges moving toward regulatory applications safety, quantitative accuracy, poor reproducibility, instability large molecule detection. As result, reality SERS, screening announcements still uncommon. this review article, we compiled current designs fabrications substrates unify requirements opportunities challenges. This expected improve interest sensing field facilitate future.

Language: Английский

Citations

40
Dual-Mode Separation and SERS Detection of Carbaryl with PA-6/AuNRs@ZIF-8 Films DOI

Yan Ding,

Cheng Liu,

Yang Shi

et al.

Analytical Chemistry, Journal Year: 2024, Volume and Issue: 96(5), P. 1941 - 1947

Published: Jan. 27, 2024

Appropriate separation and enrichment steps can enhance the performance of SERS assays. For rapid, in-situ detection carbaryl, a novel PA-6/AuNRs@ZIF-8 film that be applied to dual-mode detection, has been developed. In film, PA-6 was used as TLC substrate for initial substance measured. ZIF-8 provides chemical enhancement in well secondary analytes. Utilizing this we have successfully implemented TLC-SERS rapid scheme, resulting limit carbaryl low 1 × 10–9 M lake water 15 min, which is significantly lower than existing standards. Additionally, manufacturing cost one kept within range $0.20–$0.40 economically, presenting substantial financial advantages. The method highly promising pesticide forensic testing.

Language: Английский

Citations

17
Collaborative integration of SERS and QCM sensing for label-free multi-component gas detection DOI
Liwei Hou, Xinyue Xu, Fengchun Tian

et al.

Talanta, Journal Year: 2025, Volume and Issue: 286, P. 127509 - 127509

Published: Jan. 1, 2025

Language: Английский

Citations

0
Highly Specific and Sensitive SERS Detection of Putrescine Using Au Nanobowls@Cu‐MOF Embedded in a Hydrogel Nanoreactor DOI Open Access

Jiaying Cao,

Duoduo Li, Shilun Feng

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Abstract Putrescine is of concern due to its toxicity and applications in monitoring food spoilage water quality. However, it difficult realize highly selective sensitive detection putrescine with interferences from other biogenetic amines similar molecular structures. In this work, Au nanobowls modified by Cu‐MOF (core‐shell bowl@Cu MOF) together o‐phthalaldehyde (OPA) are embedded into sodium alginate hydrogel construct a unique SERS substrate (OPA‐Au MOF/hydrogel) for sensing putrescine. the confined space porous hydrogel, Schiff base reaction between OPA resulted product N, N‐dibenzylidene‐n‐butylenediamine (OPA‐Putrescine), which easily captured via copper‐nitrogen coordination then detected thanks high activity large Raman scattering cross‐section OPA‐Putrescine. The above contributed selectivity greatly suppress many amino group‐containing molecules. limit (LOD) gaseous liquid 1.2 × 10 −9 6.3 −10 mol L −1 , respectively. Further, application potential SERS‐sensor environmental fields demonstrated successful salmon seawater samples.

Language: Английский

Citations

0
Julolidine-based fluorescent probe for ultrafast amine response: Sensing gel and label for visual assessment of fish freshness via naked eye or smartphone DOI
Yafei Zhao, Lina Hu, T. Liang

et al.

Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 113319 - 113319

Published: March 1, 2025

Language: Английский

Citations

0
In situ synthesized highly sensitive AANS@ZIF-8@GZEF constructed flexible SERS sensor for CPS determination DOI
Yipeng Zhang,

Zhangze Yang,

Yucheng Zou

et al.

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 414, P. 135936 - 135936

Published: May 8, 2024

Language: Английский

Citations

3
Unveiling anthocyanins structural basis with multiplexed colorimetric and SERS responses for smart monitoring of seafood freshness DOI
Huiwen Liu, Limin Cao, Jianxin Sui

et al.

Food Chemistry, Journal Year: 2025, Volume and Issue: 488, P. 144841 - 144841

Published: May 19, 2025

Language: Английский

Citations

0
Differences between surfactant-free Au@Ag and CTAB-stabilized Au@Ag star-like nanoparticles in the preparation of nanoarrays to improve their surface-enhanced Raman scattering (SERS) performance DOI Creative Commons
Sy Van Vu, Thu Anh Nguyen,

Anh-Thi Cao Tran

et al.

Nanoscale Advances, Journal Year: 2023, Volume and Issue: 5(20), P. 5543 - 5561

Published: Jan. 1, 2023

This study assessed the controlled synthesis process and efficacy of surface-enhanced Raman scattering (SERS) on two distinct types star-like Au@Ag core-shell nanoarrays. These nanoarrays were designed based gold nanostars (AuNSs) that synthesized with without CTAB surfactant (AuNSs-CTAB, AuNSs-FS). The differences in size morphology these AuNSs creating also studied. To create nanoarrays, a three-step was conducted. That involved nanostars, covered silver layer (AuNSs-FS@Ag AuNSs-CTAB@Ag), finally, self-assembling AuNSs@Ag core-shelled nanoparticles by liquid/liquid self-assembled method. nano-substrates developed AuNSs-FS@Ag able to provide numerous 'hot spots' their surface, resulting highly effective SERS performance. AuNSs-FS features significantly higher number sharp branches than AuNSs-CTAB, making them superior choice for It is worth mentioning AuNSs-CTAB does not same benefits as AuNSs-FS. formed controlling seed boiling temperature adding specific amount ions. compare activity between as-prepared included AuNSs-CTAB@Ag crystal violet aqueous solutions at low concentrations characterized. results showed could detect CV trace ranging from 1.0 ng/mL 10 limit detection (LOD) 0.45 quantification (LOQ) 1.38 ng/mL. nano substrates remained stable 42 days decrease characteristic peaks intensities below 7.0% after storage. Furthermore, spiking method amounts natural water Dong nai river 1 100 ng/mL, LOD 6.07 LOQ 18.4 displayed good reproducibility an RSD value 5.71%. better understand impact stabilized performance, we conducted density functional theory (DFT) calculations. Our research shows self-assembly makes implementation efficient, simple, fast can be easily any laboratory.

Language: Английский

Citations

7
Advances of surface-enhanced Raman scattering in gas sensing DOI
Yu Cui, Kuan Chang, Qinzhi Wang

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 524, P. 216320 - 216320

Published: Nov. 19, 2024

Language: Английский

Citations

1
Biosensors for Seafood Safety Control—A Review DOI Creative Commons
Thi Ngoc Diep Trinh, Hanh An Nguyen, Pham Anh Thi Nguyen

et al.

Micromachines, Journal Year: 2024, Volume and Issue: 15(12), P. 1509 - 1509

Published: Dec. 18, 2024

The increased demand for consuming seafood has made production undergo a rapid period of growth. However, high risk contamination from harmful microorganisms and marine toxins which can cause health problems humans it. Concerning this issue, monitoring safety become center attention researchers, developing effective methods detecting in critical research field. In context, biosensors have served as promising approach to monitor contamination. Compared conventional methods, some key benefits such sensitivity, selectivity, portability, user-friendly operation. Along with significant advances biosensors, processes be simplified performed outside the laboratory. review article, we describe mechanisms two main types regarding electrochemical optical biosensors. current reports within last five years on application these are also summarized.

Language: Английский

Citations

0