Bifunctional bimetallic heterojunction material based on Al                         2                         O                         3                         /ZnO micro flowers for electrochemical sensing and catalysis

Vengudusamy Renganathan; Ramachandran Balaji; Shen Ming Chen; Sakthivel Kogularasu; Muthumariappan Akilarasan

doi:10.1016/j.ecoenv.2019.03.105

Bifunctional bimetallic heterojunction material based on Al ₂ O ₃ /ZnO micro flowers for electrochemical sensing and catalysis

Vengudusamy Renganathan
, Ramachandran Balaji
, Shen Ming Chen^*
, Sakthivel Kogularasu
, Muthumariappan Akilarasan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	250-257
Number of pages	8
Journal	Ecotoxicology and Environmental Safety
Volume	176
DOIs	https://doi.org/10.1016/j.ecoenv.2019.03.105
State	Published - 30 Jul 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Inc.

Keywords

Al O -ZnO
Bimetallic heterojunction material
Catalytic reduction
Electrochemical sensing
Environmental protection

ASJC Scopus subject areas

Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

Access to Document

10.1016/j.ecoenv.2019.03.105

Cite this

Renganathan, V., Balaji, R., Chen, S. M., Kogularasu, S., & Akilarasan, M. (2019). Bifunctional bimetallic heterojunction material based on Al ₂ O ₃ /ZnO micro flowers for electrochemical sensing and catalysis Ecotoxicology and Environmental Safety, 176, 250-257. https://doi.org/10.1016/j.ecoenv.2019.03.105

Renganathan, Vengudusamy ; Balaji, Ramachandran ; Chen, Shen Ming et al. / Bifunctional bimetallic heterojunction material based on Al ₂ O ₃ /ZnO micro flowers for electrochemical sensing and catalysis In: Ecotoxicology and Environmental Safety. 2019 ; Vol. 176. pp. 250-257.

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title = " Bifunctional bimetallic heterojunction material based on Al 2 O 3 /ZnO micro flowers for electrochemical sensing and catalysis ",

abstract = " 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.",

keywords = "Al O -ZnO, Bimetallic heterojunction material, Catalytic reduction, Electrochemical sensing, Environmental protection",

author = "Vengudusamy Renganathan and Ramachandran Balaji and Chen, \{Shen Ming\} and Sakthivel Kogularasu and Muthumariappan Akilarasan",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Inc.",

year = "2019",

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day = "30",

doi = "10.1016/j.ecoenv.2019.03.105",

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Renganathan, V, Balaji, R, Chen, SM, Kogularasu, S & Akilarasan, M 2019, ' Bifunctional bimetallic heterojunction material based on Al ₂ O ₃ /ZnO micro flowers for electrochemical sensing and catalysis ', Ecotoxicology and Environmental Safety, vol. 176, pp. 250-257. https://doi.org/10.1016/j.ecoenv.2019.03.105

Bifunctional bimetallic heterojunction material based on Al ₂ O ₃ /ZnO micro flowers for electrochemical sensing and catalysis . / Renganathan, Vengudusamy; Balaji, Ramachandran; Chen, Shen Ming et al.
In: Ecotoxicology and Environmental Safety, Vol. 176, 30.07.2019, p. 250-257.

Research output: Contribution to journal › Article › peer-review

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T1 - Bifunctional bimetallic heterojunction material based on Al 2 O 3 /ZnO micro flowers for electrochemical sensing and catalysis

AU - Renganathan, Vengudusamy

AU - Balaji, Ramachandran

AU - Chen, Shen Ming

AU - Kogularasu, Sakthivel

AU - Akilarasan, Muthumariappan

PY - 2019/7/30

Y1 - 2019/7/30

N2 - 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.

AB - 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.

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SN - 0147-6513

VL - 176

SP - 250

EP - 257

JO - Ecotoxicology and Environmental Safety

JF - Ecotoxicology and Environmental Safety

ER -

Renganathan V, Balaji R, Chen SM, Kogularasu S, Akilarasan M. Bifunctional bimetallic heterojunction material based on Al ₂ O ₃ /ZnO micro flowers for electrochemical sensing and catalysis Ecotoxicology and Environmental Safety. 2019 Jul 30;176:250-257. doi: 10.1016/j.ecoenv.2019.03.105

Bifunctional bimetallic heterojunction material based on Al 2 O 3 /ZnO micro flowers for electrochemical sensing and catalysis