Ferroelectric Perovskite Oxide@TiO2 Nanorod Heterostructures: Preparation, Characterization, and Application as a Platform for Photoelectrochemical Bioanalysis
| Autor: | Mao-Tian Xu, Li-Min Yu, Peng Qu, Yuan-Cheng Zhu, Wei-Wei Zhao, Yi-Li Liu, Qi Shen |
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| Rok vydání: | 2018 |
| Předmět: |
Chemistry
Oxide Nanotechnology Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Hydrothermal circulation 0104 chemical sciences Analytical Chemistry Pulsed laser deposition chemistry.chemical_compound Nanorod 0210 nano-technology Selectivity Perovskite (structure) |
| Zdroj: | Analytical Chemistry. 90:10803-10811 |
| ISSN: | 1520-6882 0003-2700 |
| DOI: | 10.1021/acs.analchem.8b01820 |
| Popis: | This work reports the first synthesis and characterization of a ferroelectric perovskite oxide-based heterostructure as well as its application for photoelectrochemical (PEC) bioanalytical purposes. Specifically, exemplified by [KNbO3]1–x[BaNi1/2Nb1/2O3-δ]x (KBNNO), the ferroelectric perovskite oxides were prepared by solid-state synthesis, while the TiO2 nanorod (NR) arrays were obtained via a hydrothermal method. Using the technique of pulsed laser deposition (PLD), KBNNO were then deposited on TiO2 NRs to form KBNNO@TiO2 NR heterostructures. Various characterization techniques were applied to reveal compositional and structural information on the as-fabricated sample, and favorable alignment existed between the two components as displayed by the PEC test. In the detection of l-cysteine, the as-fabricated KBNNO@TiO2 NRs demonstrated good performance in terms of sensitivity and selectivity. This work revealed the potential of ferroelectric perovskite oxide and its heterostructures for innovative PEC bioa... |
| Databáze: | OpenAIRE |
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