Conducting composite materials from the biopolymer kappa-carrageenan and carbon nanotubes

• Ali Aldalbahi,
• Jin Chu,
• Peter Feng and
• Marc in het Panhuis

Beilstein J. Nanotechnol. 2012, 3, 415–427, doi:10.3762/bjnano.3.48

• outperforming SWNT films. This work contributes toward the development of conducting biopolymer composite materials. Experimental Materials The biopolymer iota-carrageenan (KC, molecular weight range 350,000–800,000 g/mol, Genuvisco type CI-102, lot # SKS2500) was donated by CP Kelco (USA). Multiwalled carbon

• nanotubes (MWNTs) produced by catalytic chemical vapour deposition were obtained from Nanocyl S.A. (Belgium, lot # 090901). Single-walled carbon nanotubes (SWNTs), produced by high-pressure decomposition of carbon monoxide (HiPCO process), were purchased from Unidym Inc. (USA, lot # P0348). Glycerin was

Glassy carbon electrodes modified with multiwalled carbon nanotubes for the determination of ascorbic acid by square-wave voltammetry

• Sushil Kumar and
• Victoria Vicente-Beckett

Beilstein J. Nanotechnol. 2012, 3, 388–396, doi:10.3762/bjnano.3.45

• interfaced to a PowerLab 400 and controlled by the EChem v1.5 software (all components from eDAQ, Denistone, NSW, Australia). SWV (SW amplitude = 15 mV, frequency = 20 Hz) voltammograms of ascorbic acid were recorded from 0–800 mV at a scan rate of 75 mV/s. Reagents The multiwalled carbon nanotubes (diameter

• carbon nanotubes were used to modify the surface of a glassy carbon electrode to enhance its electroactivity. Nafion served to immobilise the carbon nanotubes on the electrode surface. The modified electrode was used to develop an analytical method for the analysis of ascorbic acid (AA) by square-wave

• Sushil Kumar Victoria Vicente-Beckett Central Queensland University, Centre for Plant and Water Science, Rockhampton, Queensland 4702, Australia Central Queensland University, Centre for Environmental Management, Rockhampton, Queensland 4702, Australia 10.3762/bjnano.3.45 Abstract Multiwalled

Structural, electronic and photovoltaic characterization of multiwalled carbon nanotubes grown directly on stainless steel

• Luca Camilli,
• Manuela Scarselli,
• Silvano Del Gobbo,
• Paola Castrucci,
• Eric Gautron and
• Maurizio De Crescenzi

Beilstein J. Nanotechnol. 2012, 3, 360–367, doi:10.3762/bjnano.3.42

• advantage of the native surface roughness and the iron content of AISI-316 stainless steel to grow multiwalled carbon nanotubes (MWCNTs) by chemical vapour deposition without the addition of an external catalyst. The structural and electronic properties of the synthesized carbon nanostructures have been