期刊
INORGANICS
卷 9, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/inorganics9060043
关键词
nanoclays; sensor; electrochemical; optical; biosensors; bioanalytes
资金
- University of Seville
Nanoclays are versatile materials with swelling capacity, cation exchange capacity, and plasticity, making them widely used in bioanalyte sensors. Both electrochemical and optical methods are main detection systems, with specific application of clay-modified electrodes in pesticide detection. Recent advances in electrochemical and optical sensors based on nanoclays have been made in detecting various bioanalytes.
Nanoclays are widespread materials characterized by a layered structure in the nano-scale range. They have multiple applications in diverse scientific and industrial areas, mainly due to their swelling capacity, cation exchange capacity, and plasticity. Due to the cation exchange capacity, nanoclays can serve as host matrices for the stabilization of several molecules and, thus, they can be used as sensors by incorporating electroactive ions, biomolecules as enzymes, or fluorescence probes. In this review, the most recent applications as bioanalyte sensors are addressed, focusing on two main detection systems: electrochemical and optical methods. Particularly, the application of electrochemical sensors with clay-modified electrodes (CLME) for pesticide detection is described. Moreover, recent advances of both electrochemical and optical sensors based on nanoclays for diverse bioanalytes' detection such as glucose, H2O2, organic acids, proteins, or bacteria are also discussed. As it can be seen from this review, nanoclays can become a key factor in sensors' development, creating an emerging technology for the detection of bioanalytes, with application in both environmental and biomedical fields.
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