Electrocatalytic Investigation of Group X Metal Nanoparticles Loaded TiO2 Nanotubes Powder Prepared by Rapid Breakdown Anodization for Selective H2O2 Sensing
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Electrocatalytic Investigation of Group X Metal Nanoparticles Loaded TiO2 Nanotubes Powder Prepared by Rapid Breakdown Anodization for Selective H2O2 Sensing
|
|
| Creator |
Manovah David, T.
Wilson, P. Manju, V. Palaniappan, A. Sagayaraj, P. Ramesh, C. |
|
| Subject |
Electrodics and Electrocatalysis
Nanotechnology |
|
| Description |
Amperometric based hydrogen peroxide (H2O2) sensor developed using a composite of Titania (TiO2) nanotubes (NTs) powder
individually loaded with Ni, Pd or Pt metal nanoparticles is reported. The bundles of TiO2 NTs powder prepared via rapid breakdown
anodization have a length of 5 to 6 μm and outer diameter of 20 to 25 nm. Sodium borohydride based reduction of chloroplatinic
acid and palladium chloride with the TiO2 NTs powder resulted in Pt/TiO2 and Pd/TiO2 composite materials. Ni/TiO2 composite
was prepared by mixing directly Ni nanoparticles (35 nm) and TiO2 NTs. The electrochemical performance of the Pt/TiO2, Pd/TiO2
and Ni/TiO2 electrodes exhibited better selectivity, sensitivity and wide linear range for the detection of the analyte H2O2, in
comparison with pristine TiO2 NTs powder. Among the composites, the Ni/TiO2 electrode exhibited high electrocatalytic activity
toward oxidation of H2O2 in 0.1 M NaOH solution. At an applied potential of +0.45 V vs. NCE, the Ni/TiO2 composite electrode
exhibits a linear dependence (R2 = 0.997) in the H2O2 concentration up to 3365 μM with a sensitivity of 5.3 μA mM−1 and detection
limit of 20 μM. In general, the Pt, Pd and Ni/ TiO2 nanocomposite electrodes exhibit better sensitivity to the detection of H2O2.
|
|
| Publisher |
Electrochemical Society
|
|
| Date |
2017
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cecri.csircentral.net/3178/1/097-2017.pdf
Manovah David, T. and Wilson, P. and Manju, V. and Palaniappan, A. and Sagayaraj, P. and Ramesh, C. (2017) Electrocatalytic Investigation of Group X Metal Nanoparticles Loaded TiO2 Nanotubes Powder Prepared by Rapid Breakdown Anodization for Selective H2O2 Sensing. Journal of The Electrochemical Society, 164 (7). B356-B365. ISSN 0013-4651 |
|
| Relation |
http://cecri.csircentral.net/3178/
|
|