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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Zhu, Xinyu Liang, Zhongwei Ji, Tianrong Wang, Lingyu Shao, Yuanhua Liu, Shujuan |
| Copyright Year | 2011 |
| Abstract | A new experimental approach to probe the structure of a water/nitrobenzene (W/NB) interface by scanning ion conductance microscopy (SICM) is presented. A nanopipette filled with aqueous solution serves as a SICM tip. The tip current is produced by the transfer of chloride (Cl−) and tetraphenylarsonium (TPAs+) ions between the aqueous solution inside the pipette and outer organic solution. The tip current increases instantaneously as a sign of touching the interface when such a tip approaches the W/NB interface. The continuous change of tip current suggests ion penetrations into the interfacial region which is less than 1 nm, in accordance with the mixed solvent model. Ion distribution information can also be extracted from the current–distance (approach) curves obtained from solutions with a series of electrolyte concentrations. The experimental results show that the SICM approach curves are sensitive to the thickness of diffuse layers. This type of technique is actually a modified version of SICM, and is similar to the operation of ion transfer mode of scanning electrochemical microscopy (SECM) with a SICM instrumentation. |
| Starting Page | 1523 |
| Ending Page | 1529 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 20416520 |
| Volume Number | 2 |
| Issue Number | 8 |
| Journal | Chemical Science |
| DOI | 10.1039/c1sc00133g |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Scanning electrochemical microscopy Nitrobenzene Chloride Microscopy Electrolyte Ion Solvent Pipette |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
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