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Zheng D, Liu K, Zhang Z, Fu Q, Bian M, Han X, Shen X, Chen X, Xie H, Wang X, Yang X, Zhang Y, Song S. Essential features of weak current for excellent enhancement of NO x reduction over monoatomic V-based catalyst. Nat Commun 2024; 15:6688. [PMID: 39107273 PMCID: PMC11303551 DOI: 10.1038/s41467-024-51034-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 07/25/2024] [Indexed: 08/09/2024] Open
Abstract
Human society is facing increasingly serious problems of environmental pollution and energy shortage, and up to now, achieving high NH3-SCR activity at ultra-low temperatures (<150 °C) remains challenging for the V-based catalysts with V content below 2%. In this study, the monoatomic V-based catalyst under the weak current-assisted strategy can completely convert NOx into N2 at ultra-low temperature with V content of 1.36%, which shows the preeminent turnover frequencies (TOF145 °C = 1.97×10-3 s-1). The improvement of catalytic performance is mainly attributed to the enhancement catalysis of weak current (ECWC) rather than electric field, which significantly reduce the energy consumption of the catalytic system by more than 90%. The further mechanism research for the ECWC based on a series of weak current-assisted characterization means and DFT calculations confirms that migrated electrons mainly concentrate around the V single atoms and increase the proportion of antibonding orbitals, which make the V-O chemical bond weaker (electron scissors effect) and thus accelerate oxygen circulation. The novel current-assisted catalysis in the present work can potentially apply to other environmental and energy fields.
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Affiliation(s)
- Daying Zheng
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China
- University of Science and Technology of China, Hefei, 230026, China
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Kaijie Liu
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China.
- University of Science and Technology of China, Hefei, 230026, China.
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China.
| | - Zeshu Zhang
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China
- University of Science and Technology of China, Hefei, 230026, China
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Qi Fu
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Mengyao Bian
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China
- University of Science and Technology of China, Hefei, 230026, China
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Xinyu Han
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China
- University of Science and Technology of China, Hefei, 230026, China
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Xin Shen
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China
- University of Science and Technology of China, Hefei, 230026, China
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Xiaohui Chen
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China
- University of Science and Technology of China, Hefei, 230026, China
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Haijiao Xie
- Hangzhou Yanqu Information Technology Co., Ltd., Hangzhou, 310003, China
| | - Xiao Wang
- University of Science and Technology of China, Hefei, 230026, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Xiangguang Yang
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China
- University of Science and Technology of China, Hefei, 230026, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Yibo Zhang
- Ganjiang Innovation Academy, Chinese Academy of Sciences, No.1, Science Academy Road, Ganzhou, 341000, China.
- University of Science and Technology of China, Hefei, 230026, China.
- Key Laboratory of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China.
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
| | - Shuyan Song
- University of Science and Technology of China, Hefei, 230026, China.
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
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Zhang Y, Long R. Nuclear Quantum Effects Accelerate Charge Separation and Recombination in g-C 3N 4/TiO 2 Heterojunctions. J Phys Chem Lett 2024; 15:6002-6009. [PMID: 38814291 DOI: 10.1021/acs.jpclett.4c01329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
We combined ring-polymer molecular dynamics (MD) and ab initio MD with nonadiabatic MD to study the effects of nuclear quantum effects (NQEs) on interlayer electron transfer and electron-hole recombination at the g-C3N4/TiO2 interface. Our simulations indicate that NQEs significantly affect electron transfer and electron-hole recombination dynamics, accelerating both processes. NQEs deform the g-C3N4 layer and expedite the movement of carbon and nitrogen atoms, thus, enhancing charge delocalization and interlayer coupling. This improved overlap between electronic state wave functions enhances nonadiabatic couplings, facilitating electron transfer and recombination. In addition to the enhanced nonadiabatic couplings accelerating electron transfer, the presence of NQEs narrows the energy gap and delays decoherence by mitigating overall fluctuations, because of restricted TiO2 movements overwhelming enhanced g-C3N4 fluctuations, thereby making the recombination faster. This work provides valuable insights into NQEs in light-element systems and contributes to guiding the development of highly efficient photocatalysts.
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Affiliation(s)
- Yitong Zhang
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Run Long
- College of Chemistry, Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, Beijing Normal University, Beijing 100875, People's Republic of China
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Yang J, Liu Q, Chen S, Ding X, Chen Y, Cai D, Wang X. Single-Atom and Dual-Atom Electrocatalysts: Synthesis and Applications. Chempluschem 2023; 88:e202300407. [PMID: 37666797 DOI: 10.1002/cplu.202300407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/01/2023] [Accepted: 09/04/2023] [Indexed: 09/06/2023]
Abstract
Distinguishing themselves from nanostructured catalysts, single-atom catalysts (SACs) typically consist of positively charged single metal and coordination atoms without any metal-metal bonds. Dual-atom catalysts (DACs) have emerged as extended family members of SACs in recent years. Both SACs and DACs possess characteristics that combine both homogeneous and heterogeneous catalysis, offering advantages such as uniform active sites and adjustable interactions with ligands, while also inheriting the high stability and recyclability associated with heterogeneous catalyst systems. They offer numerous advantages and are extensively utilized in the field of electrocatalysis, so they have emerged as one of the most prominent material research platforms in the direction of electrocatalysis. This review provides a comprehensive review of SACs and DACs in the field of electrocatalysis: encompassing economic production, elucidating electrocatalytic reaction pathways and associated mechanisms, uncovering structure-performance relationships, and addressing major challenges and opportunities within this domain. Our objective is to present novel ideas for developing advanced synthesis strategies, precisely controlling the microstructure of catalytic active sites, establishing accurate structure-activity relationships, unraveling potential mechanisms underlying electrocatalytic reactions, identifying more efficient reaction paths, and enhancing overall performance in electrocatalytic reactions.
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Affiliation(s)
- Jianjian Yang
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, P. R. China
| | - Qiang Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Shian Chen
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, P. R. China
| | - Xiangnong Ding
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, P. R. China
| | - Yuqi Chen
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, P. R. China
| | - Dongsong Cai
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, P. R. China
| | - Xi Wang
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, P. R. China
- Department of Physics, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing, 100044, P. R. China
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4
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Parvin S, Bothra N, Dutta S, Maji M, Mura M, Kumar A, Chaudhary DK, Rajput P, Kumar M, Pati SK, Bhattacharyya S. Inverse 'intra-lattice' charge transfer in nickel-molybdenum dual electrocatalysts regulated by under-coordinating the molybdenum center. Chem Sci 2023; 14:3056-3069. [PMID: 36937581 PMCID: PMC10016623 DOI: 10.1039/d2sc04617b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 02/20/2023] [Indexed: 02/23/2023] Open
Abstract
The prevalence of intermetallic charge transfer is a marvel for fine-tuning the electronic structure of active centers in electrocatalysts. Although Pauling electronegativity is the primary deciding factor for the direction of charge transfer, we report an unorthodox intra-lattice 'inverse' charge transfer from Mo to Ni in two systems, Ni73Mo alloy electrodeposited on Cu nanowires and NiMo-hydroxide (Ni : Mo = 5 : 1) on Ni foam. The inverse charge transfer deciphered by X-ray absorption fine structure studies and X-ray photoelectron spectroscopy has been understood by the Bader charge and projected density of state analyses. The undercoordinated Mo-center pushes the Mo 4d-orbitals close to the Fermi energy in the valence band region while Ni 3d-orbitals lie in the conduction band. Since electrons are donated from the electron-rich Mo-center to the electron-poor Ni-center, the inverse charge transfer effect navigates the Mo-center to become positively charged and vice versa. The reverse charge distribution in Ni73Mo accelerates the electrochemical hydrogen evolution reaction in alkaline and acidic media with 0.35 and 0.07 s-1 turnover frequency at -33 ± 10 and -54 ± 8 mV versus the reversible hydrogen electrode, respectively. The corresponding mass activities are 10.5 ± 2 and 2.9 ± 0.3 A g-1 at 100, and 54 mV overpotential, respectively. Anodic potential oxidizes the Ni-center of NiMo-hydroxide for alkaline water oxidation with 0.43 O2 s-1 turnover frequency at 290 mV overpotential. This extremely durable homologous couple achieves water and urea splitting with cell voltages of 1.48 ± 0.02 and 1.32 ± 0.02 V, respectively, at 10 mA cm-2.
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Affiliation(s)
- Sahanaz Parvin
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur 741246 India
| | - Neha Bothra
- Theoretical Sciences Unit, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research Bangalore 560064 India
| | - Supriti Dutta
- Theoretical Sciences Unit, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research Bangalore 560064 India
| | - Mamoni Maji
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur 741246 India
| | - Maglu Mura
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur 741246 India
| | - Ashwani Kumar
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur 741246 India
| | - Dhirendra K Chaudhary
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur 741246 India
- Centre for Renewable Energy, Prof. Rajendra Singh (Rajju Bhaiya) Institute of Physical Sciences for Study and Research, V. B. S. Purvanchal University Jaunpur 222003 India
| | - Parasmani Rajput
- Beamline Development and Application Section, Bhabha Atomic Research Center Trombay Mumbai 400085 India
- Homi Bhabha National Institute Anushakti Nagar Mumbai-400094 India
| | - Manvendra Kumar
- Department of Physics, Institute of Science, Shri Vaishnav Vidyapeeth Viswavidyalaya Indore 453111 India
| | - Swapan K Pati
- Theoretical Sciences Unit, School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research Bangalore 560064 India
| | - Sayan Bhattacharyya
- Department of Chemical Sciences and Centre for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur 741246 India
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Pan L, Wang J, Lu F, Liu Q, Gao Y, Wang Y, Jiang J, Sun C, Wang J, Wang X. Single-Atom or Dual-Atom in TiO 2 Nanosheet: Which is the Better Choice for Electrocatalytic Urea Synthesis? Angew Chem Int Ed Engl 2023; 62:e202216835. [PMID: 36448542 DOI: 10.1002/anie.202216835] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022]
Abstract
As rising star materials, single-atom and dual-atom catalysts have been widely reported in the electro-catalysis area. To answer the key question: single-atom and dual-atom catalysts, which is better for electrocatalytic urea synthesis? we design two types of catalysts via a vacancy-anchorage strategy: single-atom Pd1 -TiO2 and dual-atom Pd1 Cu1 -TiO2 nanosheets. An ultrahigh urea activity of 166.67 molurea molPd -1 h1 with the corresponding 22.54 % Faradaic efficiency at -0.5 V vs. reversible hydrogen electrode (RHE) is achieved over Pd1 Cu1 -TiO2 , which is much higher than that of Pd1 -TiO2 . Various characterization including an in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and theoretical calculations demonstrate that dual-atom Pd1 Cu1 site in Pd1 Cu1 -TiO2 is more favorable for producing urea, which experiences a C-N coupling pathway with a lower energy barrier compared with Pd1 in Pd1 -TiO2 .
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Affiliation(s)
- Lu Pan
- Department of Physics, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Jingnan Wang
- School of Chemical Engineering and Technology, Tianjin University, Molecular Plus and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, P. R. China
| | - Fei Lu
- College of Physical Science and Technology, Yangzhou University, Yangzhou, 225002, P. R. China
| | - Qiang Liu
- School of Chemical Engineering and Technology, Tianjin University, Molecular Plus and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, P. R. China
| | - Yuhang Gao
- Key Laboratory of Photochemistry Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yan Wang
- Department of Physics, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Jingzhe Jiang
- School of Chemical Engineering and Technology, Tianjin University, Molecular Plus and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, P. R. China
| | - Chao Sun
- School of Chemical Engineering and Technology, Tianjin University, Molecular Plus and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, P. R. China
| | - Jian Wang
- Research Center for Magnetic and Spintronic Materials, National Institute for Materials Science, Tsukuba, 305-0047, Japan
| | - Xi Wang
- Department of Physics, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing, 100044, P. R. China
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