|Title:||Bifunctional bimetallic heterojunction material based on Al <inf>2</inf> O <inf>3</inf> /ZnO micro flowers for electrochemical sensing and catalysis||Authors:||Renganathan, Vengudusamy
Chen, Shen Ming
|Keywords:||Al O -ZnO 2 3 | Bimetallic heterojunction material | Catalytic reduction | Electrochemical sensing | Environmental protection||Issue Date:||30-Jul-2019||Journal Volume:||176||Source:||Ecotoxicology and Environmental Safety||Abstract:||
© 2019 Elsevier Inc. We report the synthesis, characterization, electrochemical sensing and catalytic capability of the bimetallic heterojunction Al 2 O 3 /ZnO micro flowers (AZ MFs). In order to prepare this bifunctional material, the facile hydrothermal process was adopted. The material was thoroughly characterized for the crystal structure and morphology with Powder XRD, XPS and FE-SEM. The investigation of electrochemical sensing was done using hydroquinone (HQ) and the chemical catalysis was using rhodamine B (RhB) with our bimetallic Al 2 O 3 /ZnO micro flowers as these are harmful industrial pollutants. The process parameters like the influence of scan rate and pH was efficiently optimized for the electrochemical detection of HQ and kinetics for the time dependent catalytic degradation of RhB dye. The linear relationship between the peak current and the concentration of HQ was found to be in the range of 0.125–20.25 μM with an impressive detection limit of 11.2 nM. In the chemical catalytic degradation of the RhB dye, our bimetallic material thrived well during the reaction and degraded the material in 10 min. The performance of bimetallic Al 2 O 3 /ZnO micro flowers towards HQ detection and RhB degradation shows good stability, reproducibility and it can be efficiently utilized to treat the environmental pollutants.
|Appears in Collections:||政治學系|
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