NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review
Abstract Non-enzymatic biosensors based on mixed transition metal oxides are deemed as the most promising devices due to their high sensitivity, selectivity, wide concentration range, low detection limits, and excellent recyclability. Spinel NiCo2O4 mixed oxides have drawn considerable attention rec...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-06-01
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| Series: | Nano-Micro Letters |
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| Online Access: | http://link.springer.com/article/10.1007/s40820-020-00462-w |
| _version_ | 1828471851859312640 |
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| author | Rajesh Kumar |
| author_facet | Rajesh Kumar |
| author_sort | Rajesh Kumar |
| collection | DOAJ |
| description | Abstract Non-enzymatic biosensors based on mixed transition metal oxides are deemed as the most promising devices due to their high sensitivity, selectivity, wide concentration range, low detection limits, and excellent recyclability. Spinel NiCo2O4 mixed oxides have drawn considerable attention recently due to their outstanding advantages including large specific surface area, high permeability, short electron, and ion diffusion pathways. Because of the rapid development of non-enzyme biosensors, the current state of methods for synthesis of pure and composite/hybrid NiCo2O4 materials and their subsequent electrochemical biosensing applications are systematically and comprehensively reviewed herein. Comparative analysis reveals better electrochemical sensing of bioanalytes by one-dimensional and two-dimensional NiCo2O4 nano-/microstructures than other morphologies. Better biosensing efficiency of NiCo2O4 as compared to corresponding individual metal oxides, viz. NiO and Co3O4, is attributed to the close intrinsic-state redox couples of Ni3+/Ni2+ (0.58 V/0.49 V) and Co3+/Co2+ (0.53 V/0.51 V). Biosensing performance of NiCo2O4 is also significantly improved by making the composites of NiCo2O4 with conducting carbonaceous materials like graphene, reduced graphene oxide, carbon nanotubes (single and multi-walled), carbon nanofibers; conducting polymers like polypyrrole (PPy), polyaniline (PANI); metal oxides NiO, Co3O4, SnO2, MnO2; and metals like Au, Pd, etc. Various factors affecting the morphologies and biosensing parameters of the nano-/micro-structured NiCo2O4 are also highlighted. Finally, some drawbacks and future perspectives related to this promising field are outlined. |
| first_indexed | 2024-12-11T05:19:55Z |
| format | Article |
| id | doaj.art-283b95a1f88a49109d2372253297f595 |
| institution | Directory Open Access Journal |
| issn | 2311-6706 2150-5551 |
| language | English |
| last_indexed | 2024-12-11T05:19:55Z |
| publishDate | 2020-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano-Micro Letters |
| spelling | doaj.art-283b95a1f88a49109d2372253297f5952022-12-22T01:19:44ZengSpringerOpenNano-Micro Letters2311-67062150-55512020-06-0112115210.1007/s40820-020-00462-wNiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A ReviewRajesh Kumar0Department of Chemistry, Jagdish Chandra DAV CollegeAbstract Non-enzymatic biosensors based on mixed transition metal oxides are deemed as the most promising devices due to their high sensitivity, selectivity, wide concentration range, low detection limits, and excellent recyclability. Spinel NiCo2O4 mixed oxides have drawn considerable attention recently due to their outstanding advantages including large specific surface area, high permeability, short electron, and ion diffusion pathways. Because of the rapid development of non-enzyme biosensors, the current state of methods for synthesis of pure and composite/hybrid NiCo2O4 materials and their subsequent electrochemical biosensing applications are systematically and comprehensively reviewed herein. Comparative analysis reveals better electrochemical sensing of bioanalytes by one-dimensional and two-dimensional NiCo2O4 nano-/microstructures than other morphologies. Better biosensing efficiency of NiCo2O4 as compared to corresponding individual metal oxides, viz. NiO and Co3O4, is attributed to the close intrinsic-state redox couples of Ni3+/Ni2+ (0.58 V/0.49 V) and Co3+/Co2+ (0.53 V/0.51 V). Biosensing performance of NiCo2O4 is also significantly improved by making the composites of NiCo2O4 with conducting carbonaceous materials like graphene, reduced graphene oxide, carbon nanotubes (single and multi-walled), carbon nanofibers; conducting polymers like polypyrrole (PPy), polyaniline (PANI); metal oxides NiO, Co3O4, SnO2, MnO2; and metals like Au, Pd, etc. Various factors affecting the morphologies and biosensing parameters of the nano-/micro-structured NiCo2O4 are also highlighted. Finally, some drawbacks and future perspectives related to this promising field are outlined.http://link.springer.com/article/10.1007/s40820-020-00462-wNano-/micro-structuredSpinel NiCo2O4Synthetic methodsModified electrodesElectrochemical biosensors |
| spellingShingle | Rajesh Kumar NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review Nano-Micro Letters Nano-/micro-structured Spinel NiCo2O4 Synthetic methods Modified electrodes Electrochemical biosensors |
| title | NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review |
| title_full | NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review |
| title_fullStr | NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review |
| title_full_unstemmed | NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review |
| title_short | NiCo2O4 Nano-/Microstructures as High-Performance Biosensors: A Review |
| title_sort | nico2o4 nano microstructures as high performance biosensors a review |
| topic | Nano-/micro-structured Spinel NiCo2O4 Synthetic methods Modified electrodes Electrochemical biosensors |
| url | http://link.springer.com/article/10.1007/s40820-020-00462-w |
| work_keys_str_mv | AT rajeshkumar nico2o4nanomicrostructuresashighperformancebiosensorsareview |