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

Adrienne K. Delluva,

Ronald L. Cook,

Matt Peppel

и другие.

Sensors, Год журнала: 2024, Номер 25(1), С. 179 - 179

Опубликована: Дек. 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.

Язык: Английский

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

и другие.

Micromachines, Год журнала: 2023, Номер 14(7), С. 1343 - 1343

Опубликована: Июнь 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.

Язык: Английский

Процитировано

41
Dual-Mode Separation and SERS Detection of Carbaryl with PA-6/AuNRs@ZIF-8 Films DOI

Yan Ding,

Cheng Liu,

Yang Shi

и другие.

Analytical Chemistry, Год журнала: 2024, Номер 96(5), С. 1941 - 1947

Опубликована: Янв. 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.

Язык: Английский

Процитировано

17
Advances of surface-enhanced Raman scattering in gas sensing DOI
Yu Cui, Kuan Chang, Qinzhi Wang

и другие.

Coordination Chemistry Reviews, Год журнала: 2024, Номер 524, С. 216320 - 216320

Опубликована: Ноя. 19, 2024

Язык: Английский

Процитировано

4
Collaborative integration of SERS and QCM sensing for label-free multi-component gas detection DOI
Liwei Hou, Xinyue Xu, Fengchun Tian

и другие.

Talanta, Год журнала: 2025, Номер 286, С. 127509 - 127509

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

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

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 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.

Язык: Английский

Процитировано

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

и другие.

Microchemical Journal, Год журнала: 2025, Номер unknown, С. 113319 - 113319

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Unveiling anthocyanins structural basis with multiplexed colorimetric and SERS responses for smart monitoring of seafood freshness DOI
Huiwen Liu, Limin Cao, Jianxin Sui

и другие.

Food Chemistry, Год журнала: 2025, Номер 488, С. 144841 - 144841

Опубликована: Май 19, 2025

Язык: Английский

Процитировано

0
SERS‐Based Vapor‐Phase Sensing of Hazardous Molecules: Recent Developments and Opportunities DOI Creative Commons

V.S. Vendamani,

Pardhu Yella, Amrit Kumar

и другие.

CleanMat., Год журнала: 2025, Номер unknown

Опубликована: Июнь 6, 2025

ABSTRACT Vapor‐phase molecular detection is an emerging approach in human‐associated fields like environmental monitoring, human health, agriculture, and national defense. Recently, trace‐level of molecules the vapor phase has been recognized as a promising extremely challenging approach. In this context, surface‐enhanced Raman spectroscopy (SERS) potential technique that offers high sensitivity superior capability finding fingerprints down to ppb level. This review critically delineates SERS's expansive progressions engagement vapor‐phase explosives, volatile organic compounds (VOC), gaseous molecules. Furthermore, we concisely describe research landscape various propose insights into prospects for imminent advancements. Additionally, emphasizes future standpoints on technical theoretical expansion addresses gap create versatile platform betterment society.

Язык: Английский

Процитировано

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

Zhangze Yang,

Yucheng Zou

и другие.

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 414, С. 135936 - 135936

Опубликована: Май 8, 2024

Язык: Английский

Процитировано

3
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

и другие.

Nanoscale Advances, Год журнала: 2023, Номер 5(20), С. 5543 - 5561

Опубликована: Янв. 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.

Язык: Английский

Процитировано

7