Self-assembled Co3O4/GO composites for excellent electrochemical detection of heavy-metal ions
- Author
- Yachao Hao, Chong Zhang, Wentao Wang, Jing Wang, Shuhang Chen, Hongyan Xu and Serge Zhuiykov (UGent)
- Organization
- Abstract
- Recently, electrochemical sensors have been applied for the detection of heavy metal ions. The modifier on the electrochemical electrode is the key factor for enhanced performance. Modification by combining metal oxide nanomaterials with good adsorption property and graphene oxide (GO) with good conductivity can construct a useful sensing interface to detect heavy metal ions. Here, the effects of structures and morphologies of Co3O4/GO composite modifiers on the electrochemical detection performance were studied. The results show that Co3O4/GO composite with holey nano-sheets of pure Co3O4 on lamella GO substrate had the best electrochemical performance for their large active sites and enhanced ion and charge transports. The limits of detection of the electrochemical sensors based on developed Co3O4/GO composite to Cd2+ and Pb2+ were calculated as 57 and 29.4 nM, respectively, which are lower than the guideline values recommended by the World Health Organization for drinking water. Furthermore, the designed sensor also showed excellent stability, selectivity, and acceptable reproducibility and reliablity. The results indicate that Co3O4/GO composite with holey layer structures as a promising electrode modifier could be potentially applied in the electrochemical detection of heavy metal ions on-site.
- Keywords
- Materials Chemistry, Electrochemistry, Surfaces, Coatings and Films, Condensed Matter Physics, Renewable Energy, Sustainability and the Environment, Electronic, Optical and Magnetic Materials, GLASSY-CARBON ELECTRODE, REDUCED GRAPHENE OXIDE, ADSORPTION CAPACITY, SENSOR, PERFORMANCE, PB(II), NANOCOMPOSITE, CADMIUM, PB2+, LEAD
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8721282
- MLA
- Hao, Yachao, et al. “Self-Assembled Co3O4/GO Composites for Excellent Electrochemical Detection of Heavy-Metal Ions.” JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 168, no. 8, 2021, doi:10.1149/1945-7111/ac1eb5.
- APA
- Hao, Y., Zhang, C., Wang, W., Wang, J., Chen, S., Xu, H., & Zhuiykov, S. (2021). Self-assembled Co3O4/GO composites for excellent electrochemical detection of heavy-metal ions. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 168(8). https://doi.org/10.1149/1945-7111/ac1eb5
- Chicago author-date
- Hao, Yachao, Chong Zhang, Wentao Wang, Jing Wang, Shuhang Chen, Hongyan Xu, and Serge Zhuiykov. 2021. “Self-Assembled Co3O4/GO Composites for Excellent Electrochemical Detection of Heavy-Metal Ions.” JOURNAL OF THE ELECTROCHEMICAL SOCIETY 168 (8). https://doi.org/10.1149/1945-7111/ac1eb5.
- Chicago author-date (all authors)
- Hao, Yachao, Chong Zhang, Wentao Wang, Jing Wang, Shuhang Chen, Hongyan Xu, and Serge Zhuiykov. 2021. “Self-Assembled Co3O4/GO Composites for Excellent Electrochemical Detection of Heavy-Metal Ions.” JOURNAL OF THE ELECTROCHEMICAL SOCIETY 168 (8). doi:10.1149/1945-7111/ac1eb5.
- Vancouver
- 1.Hao Y, Zhang C, Wang W, Wang J, Chen S, Xu H, et al. Self-assembled Co3O4/GO composites for excellent electrochemical detection of heavy-metal ions. JOURNAL OF THE ELECTROCHEMICAL SOCIETY. 2021;168(8).
- IEEE
- [1]Y. Hao et al., “Self-assembled Co3O4/GO composites for excellent electrochemical detection of heavy-metal ions,” JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 168, no. 8, 2021.
@article{8721282,
abstract = {{Recently, electrochemical sensors have been applied for the detection of heavy metal ions. The modifier on the electrochemical electrode is the key factor for enhanced performance. Modification by combining metal oxide nanomaterials with good adsorption property and graphene oxide (GO) with good conductivity can construct a useful sensing interface to detect heavy metal ions. Here, the effects of structures and morphologies of Co3O4/GO composite modifiers on the electrochemical detection performance were studied. The results show that Co3O4/GO composite with holey nano-sheets of pure Co3O4 on lamella GO substrate had the best electrochemical performance for their large active sites and enhanced ion and charge transports. The limits of detection of the electrochemical sensors based on developed Co3O4/GO composite to Cd2+ and Pb2+ were calculated as 57 and 29.4 nM, respectively, which are lower than the guideline values recommended by the World Health Organization for drinking water. Furthermore, the designed sensor also showed excellent stability, selectivity, and acceptable reproducibility and reliablity. The results indicate that Co3O4/GO composite with holey layer structures as a promising electrode modifier could be potentially applied in the electrochemical detection of heavy metal ions on-site.}},
articleno = {{083503}},
author = {{Hao, Yachao and Zhang, Chong and Wang, Wentao and Wang, Jing and Chen, Shuhang and Xu, Hongyan and Zhuiykov, Serge}},
issn = {{0013-4651}},
journal = {{JOURNAL OF THE ELECTROCHEMICAL SOCIETY}},
keywords = {{Materials Chemistry,Electrochemistry,Surfaces,Coatings and Films,Condensed Matter Physics,Renewable Energy,Sustainability and the Environment,Electronic,Optical and Magnetic Materials,GLASSY-CARBON ELECTRODE,REDUCED GRAPHENE OXIDE,ADSORPTION CAPACITY,SENSOR,PERFORMANCE,PB(II),NANOCOMPOSITE,CADMIUM,PB2+,LEAD}},
language = {{eng}},
number = {{8}},
pages = {{7}},
title = {{Self-assembled Co3O4/GO composites for excellent electrochemical detection of heavy-metal ions}},
url = {{http://doi.org/10.1149/1945-7111/ac1eb5}},
volume = {{168}},
year = {{2021}},
}
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