Effect Of Pigment Concentration And Particle Size Of Tio2 Support On Performance Of Chemochromic Hydrogen Tape Sensor

Keywords

Chemochromic hydrogen tape sensor; Color contrast; Particle size; Pigment

Abstract

A chemochromic hydrogen tape sensor has been developed to detect hydrogen leaks using titania (TiO2) supported palladium oxide (PdO) pigments encapsulated within a silicone matrix. This study has been carried out to investigate the effects of pigment (PdO-TiO2) concentration and particle size of TiO2 support on detection performance in terms of color contrast of a chemochromic hydrogen tape sensor. The irreversible hydrogen tape sensors were tested with different concentration from 0.2 wt% to 10.0 wt%. Several pigments were synthesized using three different TiO2 support with particle sizes ranging from 100 nm to 5 μm. The experimental results exhibit that the color of the pigment with 0.2 wt% shows distinctive color change in minimum and the optimal pigment concentration for silicone matrix type irreversible tape sensor is 3.0 wt%. In addition, TEM analysis revealed that the PdO particles become larger and agglomerated as increasing the particle size of TiO2 support. The pigment with Aldrich TiO2 particle size ≤5 μm has a good performance than smaller one.

Publication Date

5-17-2018

Publication Title

International Journal of Hydrogen Energy

Volume

43

Issue

20

Number of Pages

9877-9883

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.ijhydene.2018.03.231

Socpus ID

85046153937 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85046153937

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