Electronic Resource
SAM Functionalized ZnO Nanowires for Selective Acetone Detection: Optimized Surface Specific Interaction Using APTMS and GLYMO Monolayers
| العنوان: | SAM Functionalized ZnO Nanowires for Selective Acetone Detection: Optimized Surface Specific Interaction Using APTMS and GLYMO Monolayers |
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| المؤلفون: | Singh, M., Kaur, N., Drera, Giovanni, Casotto, Andrea, Sangaletti, Luigi Ermenegildo, Comini, E., Drera G. (ORCID:0000-0002-3871-9227), Casotto A., Sangaletti L. (ORCID:0000-0001-9312-5862) |
| بيانات النشر: | Wiley-VCH Verlag 2020 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | In modern days, self-assembled monolayer (SAM) functionalized surfaces represent an interesting tool for the development of ultrasensitive and selective sensing platforms for the detection of chemical substances such as biomolecules and gases. The ability of SAM to generate different functional groups on a single surface such as zinc oxide (ZnO) can be used to immobilize biomolecules and detect different analytes such as gases, proteins, etc. Herein, SAM functionalized ZnO NW-based sensors are developed for acetone exhaled breath analysis. ZnO NWs are synthesized using a vapor–liquid–solid mechanism and their functionalization is done with two different SAMs, i.e., (3-aminopropyl)trimethoxysilane (APTMS) and 3-glycidoxypropyltrimethoxysilane (GLYMO). The enhancement in the electron depletion layer resistance (and also width) due to the capturing of electrons from the ZnO NWs surface by APTMS and GLYMO molecules is found to be the major reason in their superior sensing performances. The amine (–NH2) groups of APTMS monolayer enhance the sensors selectivity toward acetone due to their reactions with acetone molecules, which produce imine in addition to water molecules. Moreover, after the functionalization with APTMS SAMs, the detection limits of the sensors are improved from 6 to 0.5 ppm, which makes these devices potential candidates for acetone exhaled breath analysis. |
| مصطلحات الفهرس: | acetone, gas sensors, nanowires, self-assembled monolayers, zinc oxide, Settore FIS/03 - FISICA DELLA MATERIA, info:eu-repo/semantics/article |
| URL: | info:eu-repo/semantics/altIdentifier/wos/WOS:000548198100001 volume:30 issue:38 firstpage:2003217 lastpage:N/A issueyear:2021 journal:ADVANCED FUNCTIONAL MATERIALS |
| الاتاحة: | Open access content. Open access content |
| ملاحظة: | English |
| Other Numbers: | SYC oai:publicatt.unicatt.it:10807/178920 10.1002/adfm.202003217 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85087916085 1256809362 |
| المصدر المساهم: | UNIV CATTOLICA DEL SACRO CUORE From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1256809362 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |