High-selectivity electrochemical non-enzymatic sensors based on graphene/Pd nanocomposites functionalized with designated ionic liquids
Wang, CH; Yang, CH; Chang, JK
| HERO ID | 4239098 |
|---|---|
| In Press | No |
| Year | 2017 |
| Title | High-selectivity electrochemical non-enzymatic sensors based on graphene/Pd nanocomposites functionalized with designated ionic liquids |
| Authors | Wang, CH; Yang, CH; Chang, JK |
| Journal | Biosensors and Bioelectronics |
| Volume | 89 |
| Issue | Pt 1 |
| Page Numbers | 483-488 |
| Abstract | Nano-sized Pd particles are uniformly dispersed on graphene nanosheets (GNSs) using a supercritical-fluid-assisted deposition technique to increase the electrochemical sensing properties. The incorporation of different kinds of ionic liquid (IL) can increase the electrode sensing current toward different analytes. Butylmethylpyrrolidinium-bis(trifluoromethanesulfonyl)imide (BMP-TFSI) IL is beneficial for glucose detection, whereas the electrode with butylmethylpyrrolidinium-dicyanamide (BMP-DCA) IL shows high sensitivity toward ascorbic acid (AA). The selective detection of glucose or AA from their mixture is for the first time demonstrated using a non-enzymatic electrode with the aid of an IL. Angle-resolved X-ray photoelectron spectroscopy analyses indicate that GNSs can create an aligned cation/anion orientation in the adsorbed IL film, with the anions preferentially occupying the topmost surface. As a result, the electrode sensitivity and selectivity are mainly determined by the IL constituent anions. |
| Doi | 10.1016/j.bios.2016.03.071 |
| Pmid | 27085520 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |