Sunlight-driven photoelectrochemical sensor for direct determination of hexavalent chromium based on Au decorated rutile TiO2 nanorods
| Autor: | Roozbeh Siavash Moakhar, Abolghasem Dolati, Mohammad Ghorbani, Gregory K. L. Goh |
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| Rok vydání: | 2017 |
| Předmět: |
Detection limit
Materials science Process Chemistry and Technology Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Catalysis Amperometry 0104 chemical sciences chemistry.chemical_compound Chromium chemistry Rutile Colloidal gold Titanium dioxide Nanorod Hexavalent chromium 0210 nano-technology General Environmental Science |
| Zdroj: | Applied Catalysis B: Environmental. 201:411-418 |
| ISSN: | 0926-3373 |
| DOI: | 10.1016/j.apcatb.2016.08.026 |
| Popis: | A highly sensitive and selective sunlight-driven photoelectrochemical sensor for the direct detection and reduction of chromium(VI) was developed based on single crystal rutile titanium dioxide nanorods decorated with gold nanoparticles. Under sun simulator illumination via the amperometric technique, these Au decorated TiO2 photoelectrodes exhibited the highest sensitivity (13.94 μA μM−1) ever reported among Au-based electrodes for Cr(VI) detection, with a very low detection limit (S/N = 3) of 0.006 μM and wide linear concentration range from 0.01 μM to 50 μM. Measurements in real water samples such as laboratory and river water also showed excellent anti-interference and recovery capabilities. |
| Databáze: | OpenAIRE |
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