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Zhang W, Zhang S, Guo P, Chen H, Zhou Y, Yu F. Efficient and durable oxygen reduction in alkaline media by doping heteroatomic boron into Fe SA-NC catalyst. J Colloid Interface Sci 2024; 669:896-901. [PMID: 38749228 DOI: 10.1016/j.jcis.2024.05.076] [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: 01/04/2024] [Revised: 05/06/2024] [Accepted: 05/11/2024] [Indexed: 05/27/2024]
Abstract
Despite extensive research has been conducted on atomic dispersion catalysts for various reactions, altering the electronic structure of the central metal to enhance electrochemical reactivity remains a challenging task. Herein, the electrochemical reactivity was considerably enhanced by introducing heteroatomic B to adjust the d-band of single Fe center. In specific, the obtained FeSA-BNC catalyst demonstrated an outstanding ORR performance (E1/2 = 0.87 V) and exhibited greater long-term durability in alkaline media compared to Pt/C. The performance of FeSA-BNC in Zn-air battery was also higher than that of Pt/C. According to theoretical calculations, a downward shift in the d-band center of Fe was induced by introducing B, thereby improving the desorption of intermediates and facilitating the oxygen reduction reaction (ORR).
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Affiliation(s)
- Wenlin Zhang
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China
| | - Shenghu Zhang
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China
| | - Peng Guo
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China
| | - Huilin Chen
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China
| | - Yuzhuo Zhou
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China
| | - Fengshou Yu
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China.
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Zhang J, Sun B, Shi S, Xu X, Shen J, Jiang H, Zhou N, Wu F. Heteroatom-doped cobalt single-atomic nanozymes with differential enzyme-like activity for bacteria-infected wound therapy. J Colloid Interface Sci 2024; 675:580-591. [PMID: 38986331 DOI: 10.1016/j.jcis.2024.07.046] [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: 03/26/2024] [Revised: 06/26/2024] [Accepted: 07/05/2024] [Indexed: 07/12/2024]
Abstract
Single-atom nanozymes (SANZs) have emerged as new media for enhancing chemodynamic therapy (CDT) to achieve desirable enzyme-like effects and excellent nanoscale specificity. However, non-optimal adsorption of Fenton-like reaction intermediates prevents SANZs from exerting kinetic activity and hinders the CDT effect. Herein, we demonstrate that heteroatom-doped Co single-atom nanozymes (SACNZs) with intrinsic charge transfer exhibit peroxidase-like properties and significantly improve the ability of CDT to treat Staphylococcus aureus-infected wounds. Density functional theory calculations showed that the S-induced charge transfer effect regulated the electronic distribution of the central metal more efficiently than P, thereby lowering the energy levels for the generation of OH and increasing the catalytic effect. Polyvinylpyrrolidone-modified SACNZs showed effects consistent with this theory in both in vitro antibacterial and in vivo ward management assays. This study systematically investigated the relationship between heteroatom-doping and the catalytic activity of metal centres, opening a new perspective for the application of CDT.
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Affiliation(s)
- Juyang Zhang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Baohong Sun
- Anhui Engineering Technology Research Center of Biochemical Pharmaceutical, School of Pharmacy, Bengbu Medical University, Bengbu 233030, China
| | - Shaoze Shi
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Xiaoyu Xu
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Jian Shen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Huijun Jiang
- Medical Basic Research Innovation Center for Cardiovascular and Cerebrovascular Diseases, Ministry of Education, International Joint Laboratory for Drug Target of Critical Illnesses, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Ninglin Zhou
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Fan Wu
- Medical Basic Research Innovation Center for Cardiovascular and Cerebrovascular Diseases, Ministry of Education, International Joint Laboratory for Drug Target of Critical Illnesses, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.
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Wang Z, Wu M, Huang Y, Zhang J, Wei X. The regulatory function of the d-orbital structure in TM@g-t-C 4N 3 for bifunctional catalysis of the oxygen evolution/reduction reaction. Phys Chem Chem Phys 2023; 26:558-568. [PMID: 38086652 DOI: 10.1039/d3cp04249a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Highly efficient catalysts for the oxygen evolution/reduction reaction (OER/ORR) have attracted great attention in research for energy devices with high conversion efficiency. Herein, systematic first-principles investigations are performed to explore the catalytic performance of graphitic C4N3 loaded with single transition metal atoms (TM@g-t-C4N3) for the OER/ORR. The results show that Fe, Co, Ni and Rh@g-t-C4N3 exhibit fascinating bifunctional catalytic activities for both the OER and ORR. Moreover, it is observed that better activities are easily achieved when the valence d orbitals of doped TM atoms are nearly fully occupied. Further analysis reveals the volcano relationship between the OER/ORR performance and the adsorption Gibbs free energy. The adsorption free energy of intermediates in the OER/ORR process is also found to highly correlate with the electronic structures of TM@g-t-C4N3, which are mainly characterized by two quantities, one is the descriptor φ related to the electronegativity and the number of valence electrons in d orbitals, and the other is the projected d band center. The results indicate that it is possible to predict the catalytic performance of TM@g-t-C4N3 by a detailed examination of the electronic properties of the doped TM atoms to some extent. This research not only provides several highly active g-t-C4N3-based single-atom catalysts (SACs) for the OER/ORR, but also reveals some potential regularities of SAC systems.
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Affiliation(s)
- Zhenduo Wang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, China.
| | - Meichen Wu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, China.
| | - Yuhong Huang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, China.
| | - Jianmin Zhang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, China.
| | - Xiumei Wei
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, China.
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Jiang R, Qiao Z, Xu H, Cao D. Novel 2D carbon material T-graphene supported 3d transition metal single atoms as efficient oxygen reduction catalysts. NANOSCALE 2023; 15:16775-16783. [PMID: 37818611 DOI: 10.1039/d3nr03507g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
Carbon-based support anchored 3d transition metal (TM) single atom catalysts (SACs) have been widely considered as promising candidates for the oxygen reduction reaction (ORR), and their intrinsic activity is closely related to the geometric and electronic structures of the supports. T-graphene was predicted to have high conductivity and stability, so it may be also a promising support for loading SACs for electrocatalysis. Here, we systematically evaluate the ORR activity of T-graphene supported TM single atoms (TMN4-Tgra and TMC4-Tgra, TM = Sc-Zn) and their graphene supported counterparts (TMN4-Gra and TMC4-Gra). The TM(dxz)-O(px), TM(dyz)-O(py) and TM(dz2)-O(pz + s) orbital hybridizations between the active central metal and the *OH intermediate determine the ORR activity. Compared to graphene, T-graphene increases the d-band center (especially the β-spin state) of single atoms and reduces the *OH adsorption strength, which thus improves the ORR activity of the catalysts located in the left leg of the ORR activity volcano plot. Interestingly, we found that for the catalysts with different TMs anchored on the same support, the adsorption strength of oxygen intermediates increases with the increase of the d-band center of the active site, while for the catalysts with the same metal anchored on different supports, the adsorption strength of oxygen intermediates weakens with the increase of the d-band center of the active site, which can serve as a d-band center dependence law on supports and active sites for designing ORR catalysts.
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Affiliation(s)
- Run Jiang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
| | - Zelong Qiao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
| | - Haoxiang Xu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
| | - Dapeng Cao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
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Xue W, Zhou Q, Cui X, Zhang J, Zuo S, Mo F, Jiang J, Zhu X, Lin Z. Atomically Dispersed FeN 2 P 2 Motif with High Activity and Stability for Oxygen Reduction Reaction Over the Entire pH Range. Angew Chem Int Ed Engl 2023; 62:e202307504. [PMID: 37345265 DOI: 10.1002/anie.202307504] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 06/18/2023] [Accepted: 06/19/2023] [Indexed: 06/23/2023]
Abstract
The past decade has witnessed the great potential of Fe-based single-atom electrocatalysis in catalyzing oxygen reduction reaction (ORR). However, it remains a grand challenge to substantially improve their intrinsic activity and long-term stability in acidic electrolytes. Herein, we report a facile chemical vapor deposition strategy, by which high-density Fe atoms (3.97 wt%) are coordinated with square-planar para-positioned nitrogen and phosphorus atoms in a hierarchical carbon framework. The as-crafted atomically dispersed Fe catalyst (denoted Fe-SA/PNC) manifests an outstanding activity towards ORR over the entire pH range. Specifically, the half-wave potential of 0.92 V, 0.83 V, and 0.86 V vs. reversible hydrogen electrode (RHE) are attained in alkaline, neutral, and acidic electrolytes, respectively, representing the high performance among reported catalysts to date. Furthermore, after 30,000 durability cycles, the Fe-SA/PNC remains to be stable with no visible performance decay when tested in 0.1 M KOH and 0.5 M H2 SO4 , and only a minor negative shift of 40 mV detected in 0.1 M HClO4 , significantly outperforming commercial Pt/C counterpart. The coordination motif of Fe-SA/PNC is validated by density functional theory (DFT) calculations. This work provides atomic-level insight into improving the activity and stability of non-noble metal ORR catalysts, opening up an avenue to craft the desired single-atom electrocatalysts.
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Affiliation(s)
- Wendan Xue
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai University, Tianjin, 300071, P. R. China
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Qixing Zhou
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai University, Tianjin, 300071, P. R. China
| | - Xun Cui
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Jiawei Zhang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Sijin Zuo
- School of Engineering, China Pharmaceutical University, Nanjing, 210009, P. R. China
| | - Fan Mo
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai University, Tianjin, 300071, P. R. China
| | - Jiwei Jiang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai University, Tianjin, 300071, P. R. China
| | - Xuya Zhu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Nankai University, Tianjin, 300071, P. R. China
| | - Zhiqun Lin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117585, Singapore
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