Superior sensing affinities of acetone towards vacancy induced and metallized ZnO monolayers

T. Hussain, H. Vovusha, R. Umer, R. Ahuja

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


The sensing propensities of acetone molecule towards zinc oxide monolayers (ZnO-ML) have been studied by means of density functional theory (DFT) calculations. Our van der Waals induced first principles calculations revealed that pristine ZnO-ML barely binds acetone, which limits its application as acetone sensing materials. However the formation of vacancies and foreign element doping improves acetone binding drastically. Among several defects, divacancy, and metal doping Li, Sc and Ti functionalization on ZnO-ML has been found the most promising ones. Presence of dangling electrons and partial positive charges in case of vacancy-induced and metallized ZnO-ML respectively, is believed to enhance the binding of acetone on the monolayers. The acetone-ZnO binding behavior has been further explained through studying the electronic properties by density of states and charge transfer mechanism though Bader analysis. Thus defected and metallized ZnO-ML could be a promising nano sensor for efficient sensing/capture of acetone. © 2018 Elsevier B.V.
Original languageEnglish
Pages (from-to)711-716
Number of pages6
JournalApplied Surface Science
Publication statusPublished - 31 Oct 2018


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