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Sensitive and selective room temperature H2S gas sensor based on Au sensitized vertical ZnO nanorods with flower-like structures

Hosseini, Z. S ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jallcom.2014.12.163
  3. Publisher: Elsevier Ltd , 2015
  4. Abstract:
  5. Pursuing a sensing structure with a large effective surface area, partial ordered arrays of ZnO nanorods with flower-like structures are introduced for gas sensing applications. Room temperature H2S response of the grown structure shows significant enhancement after modification with Au nanoparticles. High response (about 1270 at 6 ppm H2S gas) and selectivity were achieved by depositing an Au layer with nominal thickness ∼6 nm. X-ray photoelectron spectroscopy (XPS) was utilized to describe the H2S sensing mechanism
  6. Keywords:
  7. Au ; Room temperature H2S sensor ; Gas detectors ; Nanorods ; X ray photoelectron spectroscopy ; Zinc oxide ; Flower-like structures ; Gas sensing applications ; Grown structures ; Large effective ; Nominal thickness ; Room temperature h ; Sensing mechanism ; ZnO nanorod ; Gold
  8. Source: Journal of Alloys and Compounds ; Volume 628 , April , 2015 , Pages 222-229 ; 09258388 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0925838814030916