Photoelectrochemical sensor based on composite of CdTe and nickel tetra-amined phthalocyanine covalently linked with graphene oxide for ultrasensitive detection of curcumin
| Autor: | Qing Huang, Pingfeng Liu, Cuizhong Zhang, Jinyun Peng, Yuxia Liu |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Oxide chemistry.chemical_element Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound law Materials Chemistry Electrical and Electronic Engineering Thin film Instrumentation Detection limit Graphene Metals and Alloys 021001 nanoscience & nanotechnology Condensed Matter Physics Cadmium telluride photovoltaics 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Nickel chemistry Chemical engineering Phthalocyanine 0210 nano-technology |
| Zdroj: | Sensors and Actuators B: Chemical. 294:157-165 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2019.05.047 |
| Popis: | A novel efficient photoelectrochemical (PEC) sensor was assembled for curcumin (Cur) detection using 2-mercaptoacetic acid (TGA)-capped CdTe nanoparticles and nickel tetra-amined phthalocyanine-linked graphene oxide (TGA-CdTe@NiTAPc-Gr). The TGA-CdTe nanoparticles could be firmly immobilized on the thin film structure of NiTAPc-Gr in a hydrogen-bonded manner, thus producing the proposed PEC sensor with a high photoelectrochemical activity of TGA-CdTe nanoparticles and excellent stability of NiTAPc-Gr. The TGA-CdTe@NiTAPc-Gr thin film showed a stronger blue light absorption property than the individual precursors, and this resulted in the sensitive detection of Cur ranging from 0.25–100 μM with a detection limit of 12.50 nM. In addition, the PEC sensor exhibited a high sensitivity and selectivity and quite good reproducibility. Thus, it shows potential for Cur detection in real samples. |
| Databáze: | OpenAIRE |
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