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Abstract
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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Affiliation(s)
- Jiaying Han
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Feifei Han
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jin Ouyang
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Quanmin Li
- Department
of Endocrinology, General Hospital of The Second Artillery, Beijing 100088, China
| | - Na Na
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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Tin disulfide nanoflakes decorated with gold nanoparticles for direct electrochemistry of glucose oxidase and glucose biosensing. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0889-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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