%0 Journal Article %1 Singh2014401 %A Singh, Baljit %A Dempsey, Eithne %A Laffir, Fathima %D 2014 %J Sensors and Actuators B: Chemical %K enzymes glucose nanotubes %P 401 - 410 %R http://dx.doi.org/10.1016/j.snb.2014.08.034 %T Carbon nanochips and nanotubes decorated PtAuPd-based nanocomposites for glucose sensing: Role of support material and efficient Pt utilisation %U http://www.sciencedirect.com/science/article/pii/S092540051401003X %V 205 %X Abstract An efficient approach for nanoparticle decoration of carbon nanochips and carbon nanotubes together with effective utilisation of Pt for direct glucose determination is demonstrated. The synthesised materials were investigated using morphological, compositional, structural and electrochemical characterisations. \TEM\ data indicated the successful nanoparticles decoration with average particle sizes in the range of 2.5 ± 0.4 nm for all the synthesised nanomaterials. The overall aim was to reduce precious Pt content in addition to improve the Pt surface utility, via, using multicomponent catalytic system and effective particles dispersion on carbon-based supports. Amperometry was employed for non-enzymatic glucose determination and the best response among the bi/tri-metallic nanomaterials was achieved for Pt2Au1Pd1/f-CNC (sensitivity = 11.24 μA mM−1 cm−2 at Eapp = 0.43 V vs Ag/AgCl), over the range 0–10 mM glucose, in neutral pH conditions. The results confirm an excellent choice of novel carbon support (carbon nanochips, CNC) which doubles the electro-active surface area (SEL = 56.2 m2/g) and active surface coverage (Θ = 36.5% for Pt2Au1Pd1/f-CNC) compared to \CNT\ supported catalysts (SEL = 26.7 m2/g and Θ = 18.1% for Pt2Au1Pd1/f-CNT) and demonstrated the role of support materials in effective nanoparticle utilisation and performance.

@article{Singh2014401, abstract = {Abstract An efficient approach for nanoparticle decoration of carbon nanochips and carbon nanotubes together with effective utilisation of Pt for direct glucose determination is demonstrated. The synthesised materials were investigated using morphological, compositional, structural and electrochemical characterisations. \{TEM\} data indicated the successful nanoparticles decoration with average particle sizes in the range of 2.5 ± 0.4 nm for all the synthesised nanomaterials. The overall aim was to reduce precious Pt content in addition to improve the Pt surface utility, via, using multicomponent catalytic system and effective particles dispersion on carbon-based supports. Amperometry was employed for non-enzymatic glucose determination and the best response among the bi/tri-metallic nanomaterials was achieved for Pt2Au1Pd1/f-CNC (sensitivity = 11.24 μA mM−1 cm−2 at Eapp = 0.43 V vs Ag/AgCl), over the range 0–10 mM glucose, in neutral pH conditions. The results confirm an excellent choice of novel carbon support (carbon nanochips, CNC) which doubles the electro-active surface area (SEL = 56.2 m2/g) and active surface coverage (Θ = 36.5% for Pt2Au1Pd1/f-CNC) compared to \{CNT\} supported catalysts (SEL = 26.7 m2/g and Θ = 18.1% for Pt2Au1Pd1/f-CNT) and demonstrated the role of support materials in effective nanoparticle utilisation and performance. }, added-at = {2015-11-25T15:01:47.000+0100}, author = {Singh, Baljit and Dempsey, Eithne and Laffir, Fathima}, biburl = {https://www.bibsonomy.org/bibtex/28b84ab2fe5a56c13cc25f80465d1780c/libraryitt}, doi = {http://dx.doi.org/10.1016/j.snb.2014.08.034}, interhash = {abf43036c2cff2f86fd7814dc176fa26}, intrahash = {8b84ab2fe5a56c13cc25f80465d1780c}, issn = {0925-4005}, journal = {Sensors and Actuators B: Chemical }, keywords = {enzymes glucose nanotubes}, pages = {401 - 410}, timestamp = {2015-11-25T15:01:47.000+0100}, title = {Carbon nanochips and nanotubes decorated PtAuPd-based nanocomposites for glucose sensing: Role of support material and efficient Pt utilisation }, url = {http://www.sciencedirect.com/science/article/pii/S092540051401003X}, volume = 205, year = 2014 }