000112517 001__ 112517
000112517 005__ 20230519145426.0
000112517 0247_ $$2doi$$a10.1021/acssensors.1c00178
000112517 0248_ $$2sideral$$a124872
000112517 037__ $$aART-2021-124872
000112517 041__ $$aeng
000112517 100__ $$0(orcid)0000-0003-2660-3726$$aLafuente, Marta
000112517 245__ $$aPlasmonic MOF thin films with raman standard for fast and ultrasensitive SERS detection of chemical warfare agents in ambient air
000112517 260__ $$c2021
000112517 5060_ $$aAccess copy available to the general public$$fUnrestricted
000112517 5203_ $$aSurface-enhanced Raman scattering (SERS) is a powerful spectroscopic technique for selective detection and quantification of molecules at extremely low concentrations. However, practical SERS applications for gaseous chemicals with small cross section is still in its early stages. We herein report a plasmonic-sorbent thin-film platform with integrated Raman internal standard with outstanding SERS sensing capabilities for chemical warfare agents (CWA) simulants. The thin film is constituted of close-packed core–shell Au@Ag nanorods individually encapsulated within a ZIF-8 framework (Au@Ag@ZIF-8). While the Au@Ag nanoparticles amplify the Raman signal of molecules located near their surface, the ZIF-8 framework plays a key role in the trapping of the dimethyl methylphosphonate (DMMP) or 2-chloroethyl ethyl sulfide (CEES) from the gas phase as well as Raman internal standard. The underlying adsorption mechanism of the molecules within the ZIF-8 framework as well as the interaction between DMMP and Ag surface are investigated by computational simulations. Outstanding SERS sensing capabilities of Au@Ag@ZIF-8 thin films, in terms of response time, quantification limit, reproducibility, and recyclability, are demonstrated for dimethyl methylphosphonate (DMMP) and 2-chloroethyl ethyl sulfide (CEES), selected as CWA simulants of sarin gas and mustard gas, respectively. A limit of detection (LOD) of 0.2 ppbV is reported for DMMP. Additionally, experiments performed with portable Raman equipment detect 2.5 ppmV for DMMP in ambient air and 76 ppbV for CEES in N2, with response times of 21 and 54 s, respectively. This proof of concept opens the door for handheld SERS-based gas sensing at ultralow concentrations in practical applications, such as homeland security, critical infrastructure protection, chemical process monitoring, or personalized medicine.
000112517 536__ $$9info:eu-repo/grantAgreement/EC/H2020/883390/EU/Advanced Surface Enhanced Raman Spectroscopy (SERS) based technologies for gas and liquids sensING in the area of chemical protection/SERSing$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 883390-SERSing$$9info:eu-repo/grantAgreement/ES/MINECO/CTQ2016-79419-R$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2016-77809-R
000112517 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-sa$$uhttp://creativecommons.org/licenses/by-nc-sa/3.0/es/
000112517 590__ $$a9.618$$b2021
000112517 592__ $$a1.833$$b2021
000112517 594__ $$a12.2$$b2021
000112517 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b26 / 180 = 0.144$$c2021$$dQ1$$eT1
000112517 593__ $$aBioengineering$$c2021$$dQ1
000112517 591__ $$aCHEMISTRY, ANALYTICAL$$b5 / 87 = 0.057$$c2021$$dQ1$$eT1
000112517 593__ $$aProcess Chemistry and Technology$$c2021$$dQ1
000112517 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b26 / 109 = 0.239$$c2021$$dQ1$$eT1
000112517 593__ $$aFluid Flow and Transfer Processes$$c2021$$dQ1
000112517 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000112517 700__ $$aDe Marchi, Sarah
000112517 700__ $$0(orcid)0000-0002-4931-1358$$aUrbiztondo, Miguel
000112517 700__ $$aPastoriza-Santos, Isabel
000112517 700__ $$aPerez-Juste, Ignacio
000112517 700__ $$0(orcid)0000-0002-8701-9745$$aSantamaria, Jesús$$uUniversidad de Zaragoza
000112517 700__ $$0(orcid)0000-0002-4758-9380$$aMallada, Reyes$$uUniversidad de Zaragoza
000112517 700__ $$0(orcid)0000-0001-9897-6527$$aPina, María$$uUniversidad de Zaragoza
000112517 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000112517 773__ $$g6, 6 (2021), 2241–2251$$pACS Sensors$$tACS Sensors$$x2379-3694
000112517 8564_ $$s5448240$$uhttps://zaguan.unizar.es/record/112517/files/texto_completo.pdf$$yVersión publicada
000112517 8564_ $$s3411596$$uhttps://zaguan.unizar.es/record/112517/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000112517 909CO $$ooai:zaguan.unizar.es:112517$$particulos$$pdriver
000112517 951__ $$a2023-05-18-14:13:15
000112517 980__ $$aARTICLE