1
|
Luo Z, Li X, Zhou T, Guan Y, Luo J, Zhang L, Sun X, He C, Zhang Q, Li Y, Ren X. Engineering Energy Level of FeN 4 Sites via Dual-Atom Site Construction Toward Efficient Oxygen Reduction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205283. [PMID: 36581564 DOI: 10.1002/smll.202205283] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Single-atom catalysts based on metal-N4 moieties and embedded in a graphite matrix (defined as MNC) are promising for oxygen reduction reaction (ORR). However, the performance of MNC catalysts is still far from satisfactory due to their imperfect adsorption energy to oxygen species. Herein, single-atom FeNC is leveraged as a model system and report an adjacent Ru-N4 moiety modulation effect to optimize the catalyst's electronic configuration and ORR performance. Theoretical simulations and physical characterizations reveal that the incorporation of Ru-N4 sites as the modulator can alter the d-band electronic energy of Fe center to weaken the FeO binding affinity, thus resulting in the lower adsorption energy of ORR intermediates at Fe sites. Thanks to the synergetic effects of neighboring Fe and Ru single-atom pairs, the FeN4 /RuN4 catalyst exhibits a half-wave potential of 0.958 V and negligible activity degradation after 10 000 cycles in 0.1 m KOH. Metal-air batteries using this catalyst in the cathode side exhibit a high power density of 219.5 mW cm-2 and excellent cycling stability for over 2370 h, outperforming the state-of-the-art catalysts.
Collapse
Affiliation(s)
- Zhaoyan Luo
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Xianliang Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Tingyi Zhou
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Yi Guan
- Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario, N6A 5B9, Canada
| | - Jing Luo
- Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario, N6A 5B9, Canada
| | - Lei Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Xueliang Sun
- Department of Mechanical and Materials Engineering, University of Western Ontario, London, Ontario, N6A 5B9, Canada
| | - Chuanxin He
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Qianling Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Yongliang Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| | - Xiangzhong Ren
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, 518060, P. R. China
| |
Collapse
|
2
|
Bang J, Jung Y, Kim H, Kim D, Cho M, Ko SH. Multi-Bandgap Monolithic Metal Nanowire Percolation Network Sensor Integration by Reversible Selective Laser-Induced Redox. NANO-MICRO LETTERS 2022; 14:49. [PMID: 35076794 PMCID: PMC8789997 DOI: 10.1007/s40820-021-00786-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/07/2021] [Indexed: 05/05/2023]
Abstract
Active electronics are usually composed of semiconductor and metal electrodes which are connected by multiple vacuum deposition steps and photolithography patterning. However, the presence of interface of dissimilar material between semiconductor and metal electrode makes various problems in electrical contacts and mechanical failure. The ideal electronics should not have defective interfaces of dissimilar materials. In this study, we developed a novel method to fabricate active electronic components in a monolithic seamless fashion where both metal and semiconductor can be prepared from the same monolith material without creating a semiconductor-metal interface by reversible selective laser-induced redox (rSLIR) method. Furthermore, rSLIR can control the oxidation state of transition metal (Cu) to yield semiconductors with two different bandgap states (Cu2O and CuO with bandgaps of 2.1 and 1.2 eV, respectively), which may allow multifunctional sensors with multiple bandgaps from the same materials. This novel method enables the seamless integration of single-phase Cu, Cu2O, and CuO, simultaneously while allowing reversible, selective conversion between oxidation states by simply shining laser light. Moreover, we fabricated a flexible monolithic metal-semiconductor-metal multispectral photodetector that can detect multiple wavelengths. The unique monolithic characteristics of rSLIR process can provide next-generation electronics fabrication method overcoming the limitation of conventional photolithography methods.
Collapse
Affiliation(s)
- Junhyuk Bang
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea
| | - Yeongju Jung
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea
| | - Hyungjun Kim
- Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Dongkwan Kim
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea
| | - Maenghyo Cho
- Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seung Hwan Ko
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea.
- Institute of Advanced Machines and Design, Institute of Engineering Research, Seoul National University, Seoul, 08826, Republic of Korea.
| |
Collapse
|
3
|
Zhao X, Susman MD, Rimer JD, Bollini P. Tuning selectivity in nickel oxide-catalyzed oxidative dehydrogenation of ethane through control over non-stoichiometric oxygen density. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01732a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Thermally stable nickel oxide cubes are used to vary, exclusively, bulk non-stoichimetric oxygen density, and to rationalize ethene selectivities in the oxidative dehydorgenation of ethane under a wide range of conditions.
Collapse
Affiliation(s)
- Xiaohui Zhao
- Department of Chemical and Biomolecular Engineering
- University of Houston
- Houston
- USA
| | - Mariano D. Susman
- Department of Chemical and Biomolecular Engineering
- University of Houston
- Houston
- USA
| | - Jeffrey D. Rimer
- Department of Chemical and Biomolecular Engineering
- University of Houston
- Houston
- USA
| | - Praveen Bollini
- Department of Chemical and Biomolecular Engineering
- University of Houston
- Houston
- USA
| |
Collapse
|
4
|
Lou Y, Zheng Y, Guo W, Liu J. Pt1–O4 as active sites boosting CO oxidation via a non-classical Mars–van Krevelen mechanism. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00115a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A new strategy to increase the total catalytic activity of SACs with low-loading noble metal for practical applications has been developed via fabricating super active SACs.
Collapse
Affiliation(s)
- Yang Lou
- Department of Physics
- Arizona State University
- Tempe
- USA
- International Joint Research Center for Photoresponsive Molecules and Materials
| | - Yongping Zheng
- Functional Thin Films Research Center
- Shenzhen Institute of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen
- China
| | - Wenyi Guo
- International Joint Research Center for Photoresponsive Molecules and Materials
- Key Laboratory of Synthetic and Biological Colloids
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
| | - Jingyue Liu
- Department of Physics
- Arizona State University
- Tempe
- USA
| |
Collapse
|