Meso-/nanoporous semiconducting metal oxides for gas sensor applications

Nguyen Duc Hoa, Nguyen Van Duy, Sherif A. El-Safty, Nguyen Van Hieu

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Development and/or design of new materials and/or structures for effective gas sensor applications with fast response and high sensitivity, selectivity, and stability are very important issues in the gas sensor technology. This critical review introduces our recent progress in the development of meso-/nanoporous semiconducting metal oxides and their applications to gas sensors. First, the basic concepts of resistive gas sensors and the recent synthesis of meso-/nanoporous metal oxides for gas sensor applications are introduced. The advantages of meso-/nanoporous metal oxides are also presented, taking into account the crystallinity and ordered/disordered porous structures. Second, the synthesis methods of meso-/nanoporous metal oxides including the soft-template, hard-template, and temple-free methods are introduced, in which the advantages and disadvantages of each synthetic method are figured out. Third, the applications of meso-/nanoporous metal oxides as gas sensors are presented. The gas nanosensors are designed based on meso-/nanoporous metal oxides for effective detection of toxic gases. The sensitivity, selectivity, and stability of the meso-/nanoporous gas nanosensors are also discussed. Finally, some conclusions and an outlook are presented.

Original languageEnglish
Article number972025
JournalJournal of Nanomaterials
Volume2015
DOIs
Publication statusPublished - 2015
Externally publishedYes

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Chemical sensors
Oxides
Metals
Nanosensors
Gases
Poisons

ASJC Scopus subject areas

  • Materials Science(all)

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Meso-/nanoporous semiconducting metal oxides for gas sensor applications. / Hoa, Nguyen Duc; Duy, Nguyen Van; El-Safty, Sherif A.; Hieu, Nguyen Van.

In: Journal of Nanomaterials, Vol. 2015, 972025, 2015.

Research output: Contribution to journalArticle

Hoa, Nguyen Duc ; Duy, Nguyen Van ; El-Safty, Sherif A. ; Hieu, Nguyen Van. / Meso-/nanoporous semiconducting metal oxides for gas sensor applications. In: Journal of Nanomaterials. 2015 ; Vol. 2015.
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