Determination of nitrite with the electrocatalytic property to the oxidation of nitrite on thionine modified aligned carbon nanotubes

Construction of Au nanoparticles on choline chloride modified glassy carbon electrode for sensitive detection of nitrite

“…As can be seen, 0.1 mM nitrite in pH 4.0 PBS showed an irreversible weak oxidation peak at 1.08 V at the bare GCE (Fig. 3, curve a), which was corresponding to the conversion of NO 2 − to NO 3 − through a two-electron oxidation process (Wen and Kang, 2004;Zhao et al, 2007;Sousa et al, 2008). The peak was rather broad due to the slow electron transfer kinetics of nitrite oxidation process.…”

Single-walled carbon nanotubes functionalized with poly(nile blue A) and their application to dehydrogenase-based biosensors

“…These unique properties of the SWNTs essentially allow them to interact with many organic compounds, especially polynuclear aromatic compounds, through -electronic and/or hydrophobic interactions, thus forming nanocomposites [57][58][59][60][61][62][63][64]. Here, Nb is selected as a model to electropolymerize on the surface of SWNTs because it is a typical polynuclear aromatic compound.…”

“…This modification is helpful in understanding the redox properties of proteins (enzymes), and more importantly, in developing biosensors and the related apparatus. In particular, carbon nanotubes (CNTs), a new type of carbon nanomaterials, have attracted considerable attention in recent years for this purpose [5][6][7][8][9][10] because of their remarknon-covalent approaches [49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64] in order to obtain desired properties. This mechanism of covalent functionalization is based on the formation of chemical bonds between CNTs and functionalized molecules, and the non-covalent functionalization is based on adsorption, wrapping, -stacking, or hydrophobic/-interactions, etc.…”

Amperometric Glucose Biosensor Based on Platinum Nanoparticles Combined Aligned Carbon Nanotubes Electrode

“…ACNTs electrode has attracted much attention [30]. Our group has reported determination of nitrite with the electrocatalytic property to the oxidation of nitrite on thionine modified aligned carbon nanotubes [31]. Tang and coworker used electrochemical oxidation method to detected glutathione at well-aligned carbon nanotube arrays electrode and depositing platinum on well-aligned carbon nanotubes arrays for methanol oxidation [32 -33].…”