Nanozyme colorimetric sensor array based on monatomic cobalt for the discrimination of sulfur-containing metal salts
文献类型：期刊论文
| 作者 | H. S. Wang, F. L. Wu, L. F. Wu, J. Q. Guan and X. D. Niu |
| 刊名 | Journal of Hazardous Materials
 |
| 出版日期 | 2023 |
| 卷号 | 456页码:13 |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2023.131643 |
| 英文摘要 | The identification of sulfur-containing metal salts (SCMs) is of great interest because they play an important role in many biological processes and diseases. Here, we constructed a ternary channel colorimetric sensor array to detect multiple SCMs simultaneously, relying on monatomic Co embedded in nitrogen-doped graphene nano-zyme (CoN4-G). Due to the unique structure, CoN4-G exhibits activity similar to native oxidases, capable of catalysing directly the oxidization of 3,3 ',5,5 '-tetramethylbenzidine (TMB) by O2 molecules independent of H2O2. Density functional theory (DFT) calculations suggest that CoN4-G has no potential barrier in the whole reaction route, thus presenting higher oxidase-like catalytic activity. Based on different degrees of TMB oxida-tion, different colorimetric response changes are obtained as "fingerprints" on the sensor array. The sensor array can discriminate different concentrations of unitary, binary, ternary, and quaternary SCMs and has been suc-cessfully applied to detect six real samples (soil, milk, red wine and egg white). To advance the field detection of the above four types of SCMs, we creatively propose a smartphone-based autonomous detection platform with a linear range of 1.6-320 mu M and a limit of detection of 0.0778-0.218 mu M, which demonstrates the potential use of sensor arrays in the application of disease diagnosis and food and environment monitoring. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/67932]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | H. S. Wang, F. L. Wu, L. F. Wu, J. Q. Guan and X. D. Niu. Nanozyme colorimetric sensor array based on monatomic cobalt for the discrimination of sulfur-containing metal salts[J]. Journal of Hazardous Materials,2023,456:13. |
| APA | H. S. Wang, F. L. Wu, L. F. Wu, J. Q. Guan and X. D. Niu.(2023).Nanozyme colorimetric sensor array based on monatomic cobalt for the discrimination of sulfur-containing metal salts.Journal of Hazardous Materials,456,13. |
| MLA | H. S. Wang, F. L. Wu, L. F. Wu, J. Q. Guan and X. D. Niu."Nanozyme colorimetric sensor array based on monatomic cobalt for the discrimination of sulfur-containing metal salts".Journal of Hazardous Materials 456(2023):13. |
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