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Gan LP, Li J, Shi F, Zou Z, Li KJ, Shi ZZ, Wu XS, Li YP, Sun W, Lu ZS, Hu T, Dai L, Li CM. Co 4+ in porous ZIF-67-derives intercalating-bridging adsorption of 2-reaction sites for simultaneous 2-electron transfer toward sensitive detection of uric acid. Anal Chim Acta 2024; 1308:342614. [PMID: 38740455 DOI: 10.1016/j.aca.2024.342614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/11/2024] [Accepted: 04/13/2024] [Indexed: 05/16/2024]
Abstract
Metal-organic frameworks (MOFs) have been used to detect uric acid (UA), but still very challenging to achieve a low detection limit due to the low inferior conductivity of MOFs. Herein, three different N-doped ZIF-67-derived carbons were synthesized for the first time by one-step co-pyrolysis of 2-methylimidazole with cobalt nitrate (CN), cobalt acetate (CA) or cobalt chloride (CC) toward UA sensing. Afterwards, the cobalt nitrate-derived Co particle (Co/CN) supported by N-doped ZIF-67-derived carbon displays extremely low detection limit and high sensitivity for UA, outperformed all reported MOFs-based UA sensors. More interestingly, it was discovered that the high valence Co4+ within the Co/CN sample produced in high-acidic environment can intercalate in the frame for a bridge adsorption between two reaction sites, which boosted simultaneous 2-electron transfer, while Co3+ only allows an end-adsorption structure for one-electron transfer being the rate determining step. Furthermore, the bridge adsorption mode of UA on Co4+ -based catalyst was also verified by theoretical DFT calculations and XPS experiment. This work holds great promise for a selective and sensitive UA sensor for practical bioscience and clinic diagnostic applications while shedding lights in fundamental research for innovative designs and developments of high-sensitive electrochemical sensors.
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Affiliation(s)
- Li Peng Gan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, China; Institute for Clean Energy and Advanced Materials, School of Materials & Energy, Southwest University, China; Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing, 400715, China; Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Juan Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, China; Institute for Clean Energy and Advanced Materials, School of Materials & Energy, Southwest University, China; Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing, 400715, China; Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Fan Shi
- Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Zhuo Zou
- Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; Australian Carbon Materials Centre (A-CMC), School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Ke Jiang Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, China; Institute for Clean Energy and Advanced Materials, School of Materials & Energy, Southwest University, China; Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing, 400715, China
| | - Zhuan Zhuan Shi
- Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Xiao Shuai Wu
- Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Yun Peng Li
- Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Wei Sun
- College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, 571158, China
| | - Zhi Song Lu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, China; Institute for Clean Energy and Advanced Materials, School of Materials & Energy, Southwest University, China; Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies, Chongqing, 400715, China.
| | - Tao Hu
- Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Liming Dai
- Australian Carbon Materials Centre (A-CMC), School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia.
| | - Chang Ming Li
- Institute of Materials Science & Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
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