期刊
TALANTA
卷 230, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.talanta.2021.122299
关键词
Magnetic nanozyme; Colorimetric sensor; Catalytic activity; Substrate; Application
资金
- National Science Foundation of China [21974121]
- Zhejiang Provincial Program for Public Welfare of Technology Application Research Plan [LGC20H300002]
- Zhejiang Provincial Key Research and Development Project [2021C03176]
- Zhejiang Provincial Natural Science Foundation [LY20B070007]
- State Administration for Market Regulation Project [2020YJ014]
- Key Laboratory of Global Change and Marine-Atmospheric Chemistry, SOA [GCMAC1901]
Colorimetric sensors based on magnetic nanozymes have been widely applied in fields such as biomedicine, food industry and environmental science. These sensors exhibit highly sensitive and selective responses, mimicking the catalytic activity of natural enzymes, making them ideal for target analytes detection.
Colorimetric sensors for the rapid detection of numerous analytes have been widely applied in many fields such as biomedicine, food industry and environmental science due to their highly sensitive and selective response, easy operation and visual identification by naked eyes. In this review, the recent progress of the colorimetric sensors based on the magnetic nanomaterials with unique nanozymes-like catalytic activity (magnetic nanozyme) and their colorimetric sensing applications are presented. Emerging magnetic nanozyme-based colorimetric sensors, such as metal oxide/sulfides-based, metal-based, carbon-based, and aptamer-conjugated magnetic nanomaterials, offer many desirable features for target analytes detection. And due to the unique nanoscale physical-chemical properties, magnetic nanozymes have been used to mimic the catalytic activity of natural enzymes such as peroxidases, oxidases and catalases. This review also highlights the catalytic mechanisms of enzyme-like reactions, and promising colorimetric sensing system for the detection of chemical compounds like H2O2, pesticide, ascorbic acid, dopamine, tetracyclines, perfluorooctane sulfonate, phenolic compounds, heavy metal ion and sulfite have been deeply discussed. In addition, the remaining challenges and future directions in utilizing magnetic nanozyme for colorimetric sensors are addressed.
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