Peptide Modified ZnO Nanoparticles as Gas Sensors Array for Volatile Organic Compounds (VOCs)

Frontiers in Chemistry

卷:6

Corrado Di Natale¹  Paola Pittia²  Marcello Mascini²  Dario Compagnone²  Flavio Della Pelle²  Sara Gaggiotti²  Sinazo Qakala³  Emmanuel Iwuoha³ 

[1] Department of Electronic Engineering, University of Roma Tor Vergata, Rome, Italy;

[2] Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy;

[3] Sensor Lab, Department of Chemistry, University of the Western Cape, Bellville, South Africa;

关键词: ZnO nanoparticles;    peptides;    virtual docking;    quartz crystal microbalances;    gas sensor array;   

DOI  :  10.3389/fchem.2018.00105

来源: DOAJ

【 摘 要 】

In this work a peptide based gas sensor array based of ZnO nanoparticles (ZnONPs) has been realized. Four different pentapeptides molecularly modeled for alcohols and esters having cysteine as a common spacer have been immobilized onto ZnONPs. ZnONPs have been morphologically and spectroscopically characterized. Modified nanoparticles have been then deposited onto quartz crystal microbalances (QCMs) and used as gas sensors with nitrogen as carrier gas. Analysis of the pure compounds modeled demonstrated a nice fitting of modeling with real data. The peptide based ZnONPs had very low sensitivity to water, compared to previously studied AuNPs peptide based gas sensors allowing the use of the array on samples with high water content. Real samples of fruit juices have been assayed; stability of the signal, good repeatability, and discrimination ability of the array was achieved.

【 授权许可】

Unknown