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Ding S, Barr JA, Lyu Z, Zhang F, Wang M, Tieu P, Li X, Engelhard MH, Feng Z, Beckman SP, Pan X, Li JC, Du D, Lin Y. Effect of Phosphorus Modulation in Iron Single-Atom Catalysts for Peroxidase Mimicking. Adv Mater 2024; 36:e2209633. [PMID: 36722360 DOI: 10.1002/adma.202209633] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/07/2022] [Indexed: 06/18/2023]
Abstract
Fe-N-C single-atom catalysts (SACs) exhibit excellent peroxidase (POD)-like catalytic activity, owing to their well-defined isolated iron active sites on the carbon substrate, which effectively mimic the structure of natural peroxidase's active center. To further meet the requirements of diverse biosensing applications, SAC POD-like activity still needs to be continuously enhanced. Herein, a phosphorus (P) heteroatom is introduced to boost the POD-like activity of Fe-N-C SACs. A 1D carbon nanowire (FeNCP/NW) catalyst with enriched Fe-N4 active sites is designed and synthesized, and P atoms are doped in the carbon matrix to affect the Fe center through long-range interaction. The experimental results show that the P-doping process can boost the POD-like activity more than the non-P-doped one, with excellent selectivity and stability. The mechanism analysis results show that the introduction of P into SAC can greatly enhance POD-like activity initially, but its effect becomes insignificant with increasing amount of P. As a proof of concept, FeNCP/NW is employed in an enzyme cascade platform for highly sensitive colorimetric detection of the neurotransmitter acetylcholine.
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Affiliation(s)
- Shichao Ding
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Jordan Alysia Barr
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Zhaoyuan Lyu
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Fangyu Zhang
- Department of NanoEngineering and Chemical Engineering Program, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Maoyu Wang
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - Peter Tieu
- Department of Chemistry, University of California, Irvine, Irvine, CA, 92697, USA
| | - Xin Li
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Mark H Engelhard
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Zhenxing Feng
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, 97331, USA
| | - Scott P Beckman
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Xiaoqing Pan
- Irvine Materials Research Institute (IMRI), Department of Physics and Astronomy, Department of Materials Science and Engineering, University of California, Irvine, Irvine, CA, 92697, USA
| | - Jin-Cheng Li
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Dan Du
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Yuehe Lin
- School of Mechanical and Material Engineering, Washington State University, Pullman, WA, 99164, USA
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