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Adhikary S, Dutta S, Mohakud S. Antiferromagnetic spin ordering in two-dimensional honeycomb lattice of SiP 3. NANOSCALE ADVANCES 2021; 3:2217-2221. [PMID: 36133774 PMCID: PMC9417914 DOI: 10.1039/d1na00101a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 03/20/2021] [Indexed: 06/16/2023]
Abstract
Magnetism in low-dimensional materials has been of sustained interest due to its intriguing quantum mechanical origin and promising device applications. Here, we propose a buckled honeycomb lattice of stoichiometry SiP3, a two-dimensional binary group-IV and V material that exhibits an antiferromagnetic ground state with itinerant electrons. Here we perform elemental Si substitution in pristine blue phosphorene to downshift the Fermi energy and induce the Fermi instability that results in a spin polarized ground state. Within first-principles calculations, we observe antiferromagnetic spin alignment between adjacent ferromagnetic triangular domains where each Si atom is coupled with three neighboring P atoms with a ferromagnetic interaction. Such unique spin structure and resulting magnetic ground state are unprecedented in defect-free two-dimensional materials made of only p-block elements. This metal-free magnetism can be exploited for advanced spintronic and memory storage applications.
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Affiliation(s)
- Souren Adhikary
- Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati Tirupati - 517507 Andhra Pradesh India
| | - Sudipta Dutta
- Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati Tirupati - 517507 Andhra Pradesh India
- Center for Atomic, Molecular and Optical Sciences & Technologies, Indian Institute of Science Education and Research (IISER) Tirupati Tirupati - 517507 Andhra Pradesh India
| | - Sasmita Mohakud
- Department of Physics, Indian Institute of Science Education and Research (IISER) Tirupati Tirupati - 517507 Andhra Pradesh India
- Center for Atomic, Molecular and Optical Sciences & Technologies, Indian Institute of Science Education and Research (IISER) Tirupati Tirupati - 517507 Andhra Pradesh India
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52
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Linghu Y, Lu D, Wu C. CO oxidation over defective and nonmetal doped MoS 2monolayers. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:165002. [PMID: 33735845 DOI: 10.1088/1361-648x/abeff9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Defective (missing S atoms) and nonmetal (C- and N-) doped MoS2monolayers in the 2H and 1T' phases have been evaluated for catalyzing CO oxidation based on first-principles calculations. For the reaction 2CO + O2→ 2CO2, the oxidization of the first CO molecule is fairly easy and sometimes is even spontaneous, as the O2 molecule is highly activated or dissociates upon adsorption. However, for the defective (2H-), C-doped (1T'-), and N-doped (2H- and 1T'-) MoS2monolayers, the remaining O*adatom often refuses to react with other CO molecules and is hard to be removed (barrier > 1.20 eV). Only when over the C-doped 2H- and defective 1T'-MoS2monolayers, the removal of the second O*adatom requires to overcome moderate barriers (0.74 and 0.88 eV, respectively) by reacting with another CO molecule via the Eley-Rideal mechanism and the catalysts are recovered. The barriers can be further reduced by applying either tensile or compressive strain to the MoS2nanosheet. In contrast, the Langmuir-Hinshelwood mechanism is followed over the metal-containing MoS2nanosheets, as the bigger size of metal dopants allow the co-adsorption of CO and O2. Therefore, the C-doped 2H- and defective 1T'-MoS2monolayers are promising nonmetal-doped catalysts for CO oxidation.
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Affiliation(s)
- Yaoyao Linghu
- School of Chemistry & Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
- School of Materials Science and Engineering, North University of China, Taiyuan 030051, People's Republic of China
| | - Dongmei Lu
- School of Chemistry & Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Chao Wu
- School of Chemistry & Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
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53
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He W, Chen C, Xu Z. Electronic excitation in graphene under single-particle irradiation. NANOTECHNOLOGY 2021; 32:165702. [PMID: 33440350 DOI: 10.1088/1361-6528/abdb64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Single-particle irradiation is a typical condition in space applications, which could be detrimental for electronic devices through processes such as single-event upset or latch-up. For functional devices made of few-atom-thick monolayers that are entirely exposed to the environment, the irradiation effects could be manifested through localized or delocalized electronic excitation, in addition to lattice defect creation. In this work, we explore the single-H irradiation effects on bare or coated graphene monolayers. Real-time time-dependent density functional theory-based first-principles calculation results elucidate the evolution of charge densities in the composite system, showing notable charge excitation but negligible charge deposition. A hexagonal boron nitride coating layer does not protect graphene from these processes. Principal component analysis demonstrates the dominance of localized excitation accompanied by nuclear motion, bond distortion and vibration, as well as a minor contribution from delocalized plasmonic excitation. The significance of coupled electron-ion dynamics in modulating the irradiation processes is identified from comparative studies on the spatial and temporal patterns of excitation for unconstrained and constrained lattices. The stopping power or energy deposition is also calculated, quantifying the dissipative nature of charge density excitation. This study offers fundamental understandings of the single-particle irradiation effects on optoelectronic devices constructed from low-dimensional materials, and inspires unconventional techniques to excite the electrons and ions in a controllable way.
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Affiliation(s)
- Wanzhen He
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, People's Republic of China
| | - Changqing Chen
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, People's Republic of China
| | - Zhiping Xu
- Applied Mechanics Laboratory, Department of Engineering Mechanics and Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, People's Republic of China
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54
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Lin PC, Villarreal R, Achilli S, Bana H, Nair MN, Tejeda A, Verguts K, De Gendt S, Auge M, Hofsäss H, De Feyter S, Di Santo G, Petaccia L, Brems S, Fratesi G, Pereira LMC. Doping Graphene with Substitutional Mn. ACS NANO 2021; 15:5449-5458. [PMID: 33596385 DOI: 10.1021/acsnano.1c00139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report the incorporation of substitutional Mn atoms in high-quality, epitaxial graphene on Cu(111), using ultralow-energy ion implantation. We characterize in detail the atomic structure of substitutional Mn in a single carbon vacancy and quantify its concentration. In particular, we are able to determine the position of substitutional Mn atoms with respect to the Moiré superstructure (i.e., local graphene-Cu stacking symmetry) and to the carbon sublattice; in the out-of-plane direction, substitutional Mn atoms are found to be slightly displaced toward the Cu surface, that is, effectively underneath the graphene layer. Regarding electronic properties, we show that graphene doped with substitutional Mn to a concentration of the order of 0.04%, with negligible structural disorder (other than the Mn substitution), retains the Dirac-like band structure of pristine graphene on Cu(111), making it an ideal system in which to study the interplay between local magnetic moments and Dirac electrons. Our work also establishes that ultralow-energy ion implantation is suited for substitutional magnetic doping of graphene. Given the flexibility, reproducibility, and scalability inherent to ion implantation, our work creates numerous opportunities for research on magnetic functionalization of graphene and other two-dimensional materials.
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Affiliation(s)
- Pin-Cheng Lin
- Quantum Solid State Physics, KU Leuven, 3001 Leuven, Belgium
| | | | - Simona Achilli
- ETSF and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Via Celoria, 16, I-20133 Milano, Italy
| | - Harsh Bana
- Quantum Solid State Physics, KU Leuven, 3001 Leuven, Belgium
| | - Maya N Nair
- CUNY Advanced Science Research Center, 85 St. Nicholas Terrace, New York, New York 10031, United States
| | - Antonio Tejeda
- Laboratoire de Physique des Solides, CNRS, Université Paris-Sud, 91405 Orsay, France
| | - Ken Verguts
- imec vzw, 3001 Leuven, Belgium
- Department of Chemistry, Division of Molecular Design and Synthesis, KU Leuven, 3001 Leuven, Belgium
| | - Stefan De Gendt
- imec vzw, 3001 Leuven, Belgium
- Department of Chemistry, Division of Molecular Design and Synthesis, KU Leuven, 3001 Leuven, Belgium
| | - Manuel Auge
- II.Institute of Physics, University of Göttingen, 37077 Göttingen, Germany
| | - Hans Hofsäss
- II.Institute of Physics, University of Göttingen, 37077 Göttingen, Germany
| | - Steven De Feyter
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, 3001 Leuven, Belgium
| | - Giovanni Di Santo
- Elettra Sincrotrone Trieste, Strada Statale 14 km 163.5, 34149 Trieste, Italy
| | - Luca Petaccia
- Elettra Sincrotrone Trieste, Strada Statale 14 km 163.5, 34149 Trieste, Italy
| | | | - Guido Fratesi
- ETSF and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Via Celoria, 16, I-20133 Milano, Italy
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55
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Shang J, Tang X, Gu Y, Krasheninnikov AV, Picozzi S, Chen C, Kou L. Robust Magnetoelectric Effect in the Decorated Graphene/In 2Se 3 Heterostructure. ACS APPLIED MATERIALS & INTERFACES 2021; 13:3033-3039. [PMID: 33400492 DOI: 10.1021/acsami.0c19768] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The magnetoelectric effect is a fundamental physical phenomenon that synergizes electric and magnetic degrees of freedom to generate distinct material responses like electrically tuned magnetism, which serves as a key foundation of the emerging field of spintronics. Here, we show by first-principles studies that ferroelectric (FE) polarization of an In2Se3 monolayer can modulate the magnetism of an adjacent transition-metal (TM)-decorated graphene layer via a ferroelectrically induced electronic transition. The TM nonbonding d-orbital shifts downward and hybridizes with carbon-p states near the Fermi level, suppressing the magnetic moment, under one FE polarization, but on reversed FE polarization this TM d-orbital moves upward, restoring the original magnetic moment. This finding of robust magnetoelectric effect in the TM-decorated graphene/In2Se3 heterostructure offers powerful insights and a promising avenue for experimental exploration of ferroelectrically controlled magnetism in two-dimensional (2D) materials.
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Affiliation(s)
- Jing Shang
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Xiao Tang
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Yuantong Gu
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Arkady V Krasheninnikov
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Department of Applied Physics, Aalto University School of Science, Aalto FI-00076, Finland
| | - Silvia Picozzi
- Consiglio Nazionale Delle Ricerche, Istituto SPIN, UOS l'Aquila, Sede di Lavoro CNR-SPIN C/o Universitá G. d'Annunzio, Chieti 66100, Italy
| | - Changfeng Chen
- Department of Physics and Astronomy, University of Nevada, Las Vegas, Nevada 89154, United States
| | - Liangzhi Kou
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4001, Australia
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56
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Shang Y, Xu X, Gao B, Wang S, Duan X. Single-atom catalysis in advanced oxidation processes for environmental remediation. Chem Soc Rev 2021; 50:5281-5322. [DOI: 10.1039/d0cs01032d] [Citation(s) in RCA: 240] [Impact Index Per Article: 80.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review presents the recent advances in synthetic strategies, characterisation, and computations of carbon-based single-atom catalysts, as well as their innovative applications and mechanisms in advanced oxidation technologies.
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Affiliation(s)
- Yanan Shang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- P. R. China
| | - Xing Xu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- P. R. China
| | - Baoyu Gao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse
- School of Environmental Science and Engineering
- Shandong University
- Jinan 250100
- P. R. China
| | - Shaobin Wang
- School of Chemical Engineering and Advanced Materials
- The University of Adelaide
- Adelaide
- Australia
| | - Xiaoguang Duan
- School of Chemical Engineering and Advanced Materials
- The University of Adelaide
- Adelaide
- Australia
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57
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Arif M, Zhang M, Mao Y, Bu Q, Ali A, Qin Z, Muhmood T, Shahnoor, Liu X, Zhou B, Chen SM. Oxygen vacancy mediated single unit cell Bi2WO6 by Ti doping for ameliorated photocatalytic performance. J Colloid Interface Sci 2021; 581:276-291. [DOI: 10.1016/j.jcis.2020.07.113] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/20/2020] [Accepted: 07/23/2020] [Indexed: 11/30/2022]
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58
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Xiang C, Liu Q, Shi L, Liu Z. Radical-Assisted Formation of Pd Single Atoms or Nanoclusters on Biochar. Front Chem 2020; 8:598352. [PMID: 33330388 PMCID: PMC7734141 DOI: 10.3389/fchem.2020.598352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/29/2020] [Indexed: 11/13/2022] Open
Abstract
Supported single atom or nanocluster catalysts have been widely studied due to their excellent catalytic properties. Many methods to prepare such catalysts start with constructing defects on supports, and the main focus is to improve dispersion and stability of the active sites. This paper for the first time reports a radical-assisted method to prepare single atom or nanocluster Pd on a biochar. The char was prepared by pyrolyzing walnut shell at 600°C under N2, and Pd was loaded on the char by impregnating with palladium acetate in toluene under an oxygen-free atmosphere. It is found that there are three types of radicals in the fresh char (F-Char-600), two of them may adsorb/bond with O2 or Pd2+ resulting in decreases in the char's radical concentration. The Pd on F-Char-600 for 24 h impregnation are single atoms (0.1-0.3 nm, 2%) and nanoclusters (0.3-1.2 nm, 98%), which grow larger (0.3-4 nm, 100%) for 84 h impregnation. The Pd on N2 purged O2-adsorbed-char (N-O-Char-600) is much larger in size. The bond between Pd and char is probably C-Pd in F-Char-600 or C-O-Pd in N-O-Char-600.
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Affiliation(s)
- Chong Xiang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Qingya Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Lei Shi
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Zhenyu Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
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59
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Carnevali V, Siloi I, Di Felice R, Fornari M. Vacancies in graphene: an application of adiabatic quantum optimization. Phys Chem Chem Phys 2020; 22:27332-27337. [PMID: 33231234 DOI: 10.1039/d0cp04037a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quantum annealers have grown in complexity to the point that quantum computations involving a few thousand qubits are now possible. In this paper, with the intentions to show the feasibility of quantum annealing to tackle problems of physical relevance, we used a simple model, compatible with the capability of current quantum annealers, to study the relative stability of graphene vacancy defects. By mapping the crucial interactions that dominate carbon-vacancy interchange onto a quadratic unconstrained binary optimization problem, our approach exploits the ground state as well as the excited states found by the quantum annealer to extract all the possible arrangements of multiple defects on the graphene sheet together with their relative formation energies. This approach reproduces known results and provides a stepping stone towards applications of quantum annealing to problems of physical-chemical interest.
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Affiliation(s)
- Virginia Carnevali
- Department of Physics, Central Michigan University, Mt. Pleasant, MI 48859, USA
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60
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Grasseschi D, Silva WC, Souza Paiva RD, Starke LD, do Nascimento AS. Surface coordination chemistry of graphene: Understanding the coordination of single transition metal atoms. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213469] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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61
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Zhuo HY, Zhang X, Liang JX, Yu Q, Xiao H, Li J. Theoretical Understandings of Graphene-based Metal Single-Atom Catalysts: Stability and Catalytic Performance. Chem Rev 2020; 120:12315-12341. [PMID: 33112608 DOI: 10.1021/acs.chemrev.0c00818] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Research on heterogeneous single-atom catalysts (SACs) has become an emerging frontier in catalysis science because of their advantages in high utilization of noble metals, precisely identified active sites, high selectivity, and tunable activity. Graphene, as a one-atom-thick two-dimensional carbon material with unique structural and electronic properties, has been reported to be a superb support for SACs. Herein, we provide an overview of recent progress in investigations of graphene-based SACs. Among the large number of publications, we will selectively focus on the stability of metal single-atoms (SAs) anchored on different sites of graphene support and the catalytic performances of graphene-based SACs for different chemical reactions, including thermocatalysis and electrocatalysis. We will summarize the fundamental understandings on the electronic structures and their intrinsic connection with catalytic properties of graphene-based SACs, and also provide a brief perspective on the future design of efficient SACs with graphene and graphene-like materials.
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Affiliation(s)
- Hong-Ying Zhuo
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China.,State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249, China
| | - Xin Zhang
- State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249, China
| | - Jin-Xia Liang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Qi Yu
- School of Materials Science and Engineering, Institute of Graphene at Shaanxi Key Laboratory of Catalysis, Shaanxi University of Technology, Hanzhong 723001, China
| | - Hai Xiao
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China.,Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
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62
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Pham HD, Gumbs G, Su WP, Thuy Tran NT, Lin MF. Unusual features of nitrogen substitutions in silicene. RSC Adv 2020; 10:32193-32201. [PMID: 35518139 PMCID: PMC9056544 DOI: 10.1039/d0ra04470a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/09/2020] [Indexed: 11/21/2022] Open
Abstract
The quasiparticle properties resulting from charge and spin are clearly identified in nitrogen-substituted silicenes, for which a theoretical framework is successfully developed from first-principles calculations. Such systems create extremely non-uniform chemical and physical environments through the distribution of the guest atoms. They present unusual geometric, electronic, and magnetic properties, which can be identified from the optimal honeycomb lattices, the atom- and spin-dominated energy spectra, the spatial charge density distributions, and the atom-, orbital- and spin-projected van Hove singularities [the net magnetic moments]. The complicated relations between the highly hybridized sp2-N-Si bonds and the ferromagnetic/non-magnetic configurations are responsible for the p-type or semiconducting behavior, the significant modifications to the Dirac cone structures, the difficulty in identifying the π and σ bands, and the vanishing or finite magnetic moments. The theoretical predictions could be verified by high-resolution experimental measurements.
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Affiliation(s)
- Hai Duong Pham
- Department of Physics, National Cheng Kung University 701 Tainan Taiwan
| | - Godfrey Gumbs
- Department of Physics and Astronomy, Hunter College of the City University of New York 695 Park Avenue New York New York 10065 USA
| | - Wu-Pei Su
- Department of Physics, University of Houston Houston 77204 Texas USA
| | - Ngoc Thanh Thuy Tran
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University Tainan 70101 Taiwan
| | - Ming-Fa Lin
- Department of Physics, National Cheng Kung University 701 Tainan Taiwan
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63
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Qin R, Liu K, Wu Q, Zheng N. Surface Coordination Chemistry of Atomically Dispersed Metal Catalysts. Chem Rev 2020; 120:11810-11899. [DOI: 10.1021/acs.chemrev.0c00094] [Citation(s) in RCA: 171] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ruixuan Qin
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Kunlong Liu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qingyuan Wu
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Nanfeng Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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64
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Han JN, Zhang ZH, Fan ZQ, Zhou RL. Magneto-electronics, transport properties, and tuning effects of arsenene armchair nanotubes doped with transition metal atoms. NANOTECHNOLOGY 2020; 31:315206. [PMID: 32299069 DOI: 10.1088/1361-6528/ab89d0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recently, the arsenic monolayer has been successfully fabricated by micromechanical stripping. However, it is a non-magnetic semiconductor, including its derivatives. Here, we theoretically explore how to induce magnetism for arsenene armchair nanotubes (AsANTs) with a low-concentration TM (TM = Co, Y, Rh, Ni, Mo, Ru) atom doping, especially focusing on their structural stability, magneto-electronic property, carrier mobility, and strain effects. The high stability of these doped tubes are confirmed by the calculated binding energy and formation energy, as well as Forcite annealing molecular dynamics simulations. The AsANT can act as bandgap narrowed non-magnetic semiconductors or highly spin-polarized magnetic semiconductors (half-semiconductor or bipolar magnetic semiconductor) depending on TM types, suggesting different promising applications such as developing infrared photodetectors with broadband detectionin or spintronic devices. The magnetic thermal stability beyond room temperature is predicted for doped tubes. Furthermore, the carrier mobility of AsANTs can be tuned into a wide region by TM doping, but it is enhanced in most cases. The carrier and spin polarity of mobility can also be clearly observed. Particularly, the applied strain can induce a rich magnetic phase transition among a half-semiconductor, half-metal, bipolar magnetic semiconductor and nonmagnetic state. Furthermore, the presented stepwise change of total magnetic moment between high magnetized and nonmagnetic states is highly desirable for engineering a mechanical switch which can reversibly work between magnetism and demagnetism to control spin-polarized transport by applying strain.
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65
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Luo M, Liang Z, Liu C, Qi X, Chen M, Yang H, Liang T. Density functional study on the CO oxidation reaction mechanism on MnN 2-doped graphene. RSC Adv 2020; 10:27856-27863. [PMID: 35516928 PMCID: PMC9055664 DOI: 10.1039/d0ra05287f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/20/2020] [Indexed: 11/21/2022] Open
Abstract
The CO oxidation mechanisms over three different MnN2-doped graphene (MnN2C2: MnN2C2-hex, MnN2C2-opp, MnN2C2-pen) structures were investigated through first-principles calculations. The vacancy in graphene can strongly stabilize Mn atoms and make them positively charged, which promotes O2 activation and weakens CO adsorption. Hence, CO oxidation activity is enhanced and the catalyst is prevented from being poisoned. CO oxidation reaction (COOR) on MnN2C2 along the Eley-Rideal (ER) mechanism and the Langmuir-Hinshelwood (LH) mechanism will leave one O atom on the Mn atom, which is difficult to react with isolated CO. COOR on MnN2C2-opp along the ER mechanism and termolecular Eley-Rideal (TER) mechanism need overcome low energy barriers in the rate limiting step (RLS), which are 0.544 and 0.342 eV, respectively. The oxidation of CO along TER mechanism on MnN2C2-opp is the best reaction pathway with smallest energy barrier. Therefore, the MnN2C2-opp is an efficient catalysis and this study has a guiding role in designing effective catalyst for CO oxidation.
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Affiliation(s)
- Mingming Luo
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 China
| | - Zhao Liang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 China
| | - Chao Liu
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 China
| | - Xiaopeng Qi
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 China
| | - Mingwei Chen
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 China
| | - Hui Yang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 China
| | - Tongxiang Liang
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology Ganzhou 341000 China
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66
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Promthong N, Tabtimsai C, Rakrai W, Wanno B. Transition metal-doped graphene nanoflakes for CO and CO2 storage and sensing applications: a DFT study. Struct Chem 2020. [DOI: 10.1007/s11224-020-01579-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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67
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Guo X, Gu J, Hu X, Zhang S, Chen Z, Huang S. Coordination tailoring towards efficient single-atom catalysts for N2 fixation: A case study of iron-nitrogen-carbon (Fe@N-C) systems. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.06.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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68
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Tsai YJ, Kuo CL. Effect of Structural Disorders on the Li Storage Capacity of Graphene Nanomaterials: A First-Principles Study. ACS APPLIED MATERIALS & INTERFACES 2020; 12:22917-22929. [PMID: 32352275 DOI: 10.1021/acsami.0c04188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We employed first-principles calculations to investigate the effect of structural disorders on the Li storage capacity of graphene nanomaterials. Our calculations first revealed that the Li storage capacity of a graphene monolayer does not necessarily increase with the size of a C vacancy created but is largely determined by the local geometry of the defect sites. Our electronic structure analysis further revealed that the enhanced Li storage capacity by the C vacancy defect is mainly attributed to the increased number of the unoccupied electronic density of states lying near the Fermi level, which can be substantially increased by raising the number of bond rotations within the vacancy sites. Furthermore, it was also found that the Li storage capacity of graphene can be effectively enhanced by increasing the degree of local ring disorders without the presence of any vacancy defect. The amorphous graphene structure was shown to possess a relatively higher Li storage capacity compared to pristine graphene, primarily owing to the presence of many nonhexagonal rings randomly distributed in the graphene lattice. These nonhexagonal rings can create many electron-deficient regions on the graphene surface to effectively accommodate more electrons from Li, thereby substantially enhancing the Li storage capacity of graphene nanomaterials.
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Affiliation(s)
- Yu-Jen Tsai
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Chin-Lung Kuo
- Department of Materials Science and Engineering, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
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69
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Ji S, Chen Y, Wang X, Zhang Z, Wang D, Li Y. Chemical Synthesis of Single Atomic Site Catalysts. Chem Rev 2020; 120:11900-11955. [PMID: 32242408 DOI: 10.1021/acs.chemrev.9b00818] [Citation(s) in RCA: 420] [Impact Index Per Article: 105.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Manipulating metal atoms in a controllable way for the synthesis of materials with the desired structure and properties is the holy grail of chemical synthesis. The recent emergence of single atomic site catalysts (SASC) demonstrates that we are moving toward this goal. Owing to the maximum efficiency of atom-utilization and unique structures and properties, SASC have attracted extensive research attention and interest. The prerequisite for the scientific research and practical applications of SASC is to fabricate highly reactive and stable metal single atoms on appropriate supports. In this review, various synthetic strategies for the synthesis of SASC are summarized with concrete examples highlighting the key issues of the synthesis methods to stabilize single metal atoms on supports and to suppress their migration and agglomeration. Next, we discuss how synthesis conditions affect the structure and catalytic properties of SASC before ending this review by highlighting the prospects and challenges for the synthesis as well as further scientific researches and practical applications of SASC.
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Affiliation(s)
- Shufang Ji
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yuanjun Chen
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xiaolu Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Zedong Zhang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yadong Li
- Department of Chemistry, Tsinghua University, Beijing 100084, China
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70
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Guan Z, Ni S, Hu S. First-Principles Study of 3d Transition-Metal-Atom Adsorption onto Graphene Embedded with the Extended Line Defect. ACS OMEGA 2020; 5:5900-5910. [PMID: 32226870 PMCID: PMC7097999 DOI: 10.1021/acsomega.9b04154] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/04/2020] [Indexed: 06/10/2023]
Abstract
A type of line defect (LD) composed of alternate squares and octagons (4-8) as the basic unit is currently an experimentally available topological defect in the graphene lattice, which brings some interesting modifications to the magnetic and electronic properties of graphene. The transitional-metal (TM) atoms adsorb on graphene with a line defect (4-8), and they show interesting and attractive structural, magnetic, and electronic properties. For different TMs such as Fe, Co, Mn, Ni, and V, the complex systems show different magnetic and electronic properties. The TM atoms can spontaneously adsorb at quadrangular sites, forming a metallic atomic chain along LD on graphene. The most stable configuration is the hollow site of a regular tangle. The TMs (TM = Co, Fe, Mn, Ni, V) tend to form extended metal lines, showing a ferromagnetic (FM) ground state. For the Co, Fe, and V atoms, the system is half-metal. The spin-α electron is insulating, while the spin-β electron is conductive. For the Mn and Ni atoms, Mn-LD and Ni-LD present a spin-polarized metal; for the Fe atom, Fe-LD shows a semimetal with Dirac cones. For Fe and V atoms, both Fe-LD and V-LD show spin-polarized half-metallic properties. And its spin-α electron is conducting, while the spin-β electron is insulating. Different TMs adsorbing on a graphene nanoribbon forming the same stable configurations of metal lines show different electronic properties. The adsorption of TMs induces magnetism and spin polarization. These metal lines have potential applications in spintronic devices and work as a quasi-one-dimensional metallic wire, which may form building blocks for atomic-scale electrons with well-controlled contacts at the atomic level.
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Affiliation(s)
- Zhaoyong Guan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China
- Department of Physics, Tsinghua University, Beijing 100084, P. R. China
| | - Shuang Ni
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
| | - Shuanglin Hu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, Sichuan 621900, P. R. China
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71
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Zhang H, Su J, Zhao K, Chen L. Recent Advances in Metal‐Organic Frameworks and Their Derived Materials for Electrocatalytic Water Splitting. ChemElectroChem 2020. [DOI: 10.1002/celc.202000136] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Heng Zhang
- School of Materials Science and EngineeringKunming University of Science and Technology Kunming, Yunnan 650093 P.R. China
- Ningbo Institute of Materials Technology & EngineeringChinese Academy of Sciences Ningbo, Zhejiang 315201 P.R. China
| | - Jianwei Su
- Ningbo Institute of Materials Technology & EngineeringChinese Academy of Sciences Ningbo, Zhejiang 315201 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Kunyu Zhao
- School of Materials Science and EngineeringKunming University of Science and Technology Kunming, Yunnan 650093 P.R. China
| | - Liang Chen
- Ningbo Institute of Materials Technology & EngineeringChinese Academy of Sciences Ningbo, Zhejiang 315201 P.R. China
- University of Chinese Academy of Sciences Beijing 100049 P.R. China
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72
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Ma J, Wu S, Yuan Y, Mao H, Lee JY, Kang B. Graphyne-anchored single Fe atoms as efficient CO oxidation catalysts as predicted by DFT calculations. Phys Chem Chem Phys 2020; 22:6004-6009. [PMID: 32123892 DOI: 10.1039/d0cp00178c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
By performing first-principles calculations, CO oxidation catalyzed by Fe-embedded defective α-graphyne was systematically investigated. It was found that Fe atoms were strongly anchored at the sp-C vacancy site of α-graphyne with a large binding energy of -5.28 eV and effectively adsorbed and activated O2 molecules. Then, we systematically compared CO oxidation by activated O2via Langmuir-Hinshelwood (LH) and Eley-Rideal (ER) mechanisms. The calculated potential energy surfaces show that the Fe-doped α-graphyne can efficiently oxidize CO via the ER mechanism, in which the threshold of the rate determining step is 0.77 eV. Furthermore, Fe doping shows little effect on the diffusivities of CO, O2, and CO2, which can further enhance its catalytic performance.
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Affiliation(s)
- Jiapeng Ma
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China. and Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Si Wu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China.
| | - Yuan Yuan
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China.
| | - Hui Mao
- Pharmaceutical and Material Engineering School, Jinhua Polytechnic, Jinhua, 321007, Zhejiang, P. R. China.
| | - Jin Yong Lee
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China. and Department of Chemistry, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Baotao Kang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong 250022, P. R. China.
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73
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Zhang L, Shi Y, Wang Y, Shiju NR. Nanocarbon Catalysts: Recent Understanding Regarding the Active Sites. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902126. [PMID: 32154069 PMCID: PMC7055564 DOI: 10.1002/advs.201902126] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/07/2019] [Indexed: 05/19/2023]
Abstract
Although carbon itself acts as a catalyst in various reactions, the classical carbon materials (e.g., activated carbons, carbon aerogels, carbon black, carbon fiber, etc.) usually show low activity, stability, and oxidation resistance. With the recent availability of nanocarbon catalysts, the application of carbon materials in catalysis has gained a renewed momentum. The research is concentrated on tailoring the surface chemistry of nanocarbon materials, since the pristine carbons in general are not active for heterogeneous catalysis. Surface functionalization, doping with heteroatoms, and creating defects are the most used strategies to make efficient catalysts. However, the nature of the catalytic active sites and their role in determining the activity and selectivity is still not well understood. Herein, the types of active sites reported for several mainstream nanocarbons, including carbon nanotubes, graphene-based materials, and 3D porous nanocarbons, are summarized. Knowledge about the active sites will be beneficial for the design and synthesis of nanocarbon catalysts with improved activity, selectivity, and stability.
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Affiliation(s)
- Lu‐Hua Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationEngineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong ProvinceInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen518060China
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamP.O. Box 94157Amsterdam1090GDThe Netherlands
| | - Yumeng Shi
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationEngineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong ProvinceInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen518060China
| | - Ye Wang
- Key Laboratory of Material Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou450052China
| | - N. Raveendran Shiju
- Van't Hoff Institute for Molecular SciencesUniversity of AmsterdamP.O. Box 94157Amsterdam1090GDThe Netherlands
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74
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Liu X, Xu M, Wan L, Zhu H, Yao K, Linguerri R, Chambaud G, Han Y, Meng C. Superior Catalytic Performance of Atomically Dispersed Palladium on Graphene in CO Oxidation. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04840] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xin Liu
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Meng Xu
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Lingyun Wan
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Hongdan Zhu
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
| | - Kexin Yao
- Multi-Scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies, School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P. R. China
| | - Roberto Linguerri
- Université Gustave Eiffel, COSYS/LISIS Laboratory, 5 bd Descartes, Marne-la-Vallée F-77454, France
| | - Gilberte Chambaud
- Université Gustave Eiffel, COSYS/LISIS Laboratory, 5 bd Descartes, Marne-la-Vallée F-77454, France
| | - Yu Han
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Changgong Meng
- State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian 116024, P. R. China
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75
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Chen W, Tang Y, Zhao G, Teng D, Chai H, Dai X. Structural, electronic and catalytic performance of single-atom Fe anchored 3Si-doped graphene. Mol Phys 2020. [DOI: 10.1080/00268976.2019.1580783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Weiguang Chen
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Yanan Tang
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Gao Zhao
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Da Teng
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Huadou Chai
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
- College of Physics and Materials Science, Henan Normal University, Xinxiang, People’s Republic of China
| | - Xianqi Dai
- Quantum Materials Research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
- College of Physics and Materials Science, Henan Normal University, Xinxiang, People’s Republic of China
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76
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Wang X, Niu H, Liu Y, Shao C, Robertson J, Zhang Z, Guo Y. Theoretical investigation on graphene-supported single-atom catalysts for electrochemical CO2 reduction. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01870h] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
TM atoms supported on the graphene sheet (TM@Grs) as promising CO2 catalysts were investigated by first-principles calculations. Cr-, Co- and Rh@Grs show remarkable performance with the low limiting potentials for CO2RR.
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Affiliation(s)
- Xiting Wang
- School of Electrical Engineering
- Wuhan University
- Wuhan
- China
| | - Huan Niu
- School of Electrical Engineering
- Wuhan University
- Wuhan
- China
| | - Yuanshuang Liu
- State Key Laboratory of Tribology
- School of Mechanical Engineering
- Tsinghua University
- Beijing
- China
| | - Chen Shao
- School of Electrical Engineering
- Wuhan University
- Wuhan
- China
| | - John Robertson
- School of Electrical Engineering
- Wuhan University
- Wuhan
- China
| | - Zhaofu Zhang
- Department of Engineering
- Cambridge University
- Cambridge
- UK
| | - Yuzheng Guo
- School of Electrical Engineering
- Wuhan University
- Wuhan
- China
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77
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Tang Y, Chen W, Zhang H, Wang Z, Teng D, Cui Y, Feng Z, Dai X. Single-atom metal-modified graphenylene as a high-activity catalyst for CO and NO oxidation. Phys Chem Chem Phys 2020; 22:16224-16235. [DOI: 10.1039/d0cp01062f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, the adsorption behaviors and interactions of different gas species on single-metal atom-anchored graphenylene (M–graphenylene, M = Mn, Co, Ni, and Cu) sheets were investigated by first-principles calculations.
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Affiliation(s)
- Yanan Tang
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Weiguang Chen
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Hongwei Zhang
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Zhiwen Wang
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Da Teng
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Yingqi Cui
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
| | - Zhen Feng
- School of Physics
- Henan Normal University
- Xinxiang
- China
| | - Xianqi Dai
- College of physics and Electronic Engineering
- Zhengzhou Normal University
- Zhengzhou 450044
- China
- School of Physics
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78
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Abstract
Graphene, the reincarnation of a surface, offers new opportunities in catalytic applications, not only because of its peculiar electronic structure, but also because of the ease of modulating it. A vast number of proposals have been made to support this point, but there has been a lack of a systematic understanding of the different roles of graphene, as many other reviews published have focused on the synthesis and characterization of the various graphene-based catalysts. In this review, we surveyed the vast literature related to various theoretical proposals and experimental realizations of graphene-based catalysts to first classify and then elucidate the different roles played by graphene in solid-state heterogeneous catalysis. Owing to its one-atom thickness and zero bandgap with low density of states around Fermi level, graphene has great potential in catalysis applications. In general, graphene can function as a support for catalysts, a cover to protect catalysts, or the catalytic center itself. Understanding these functions is important in the design of catalysts in terms of how to optimize the electronic structure of the active sites for particular applications, a few case studies of which will be presented for each role.
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79
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Khalid M, Bhardwaj PA, Honorato AMB, Varela H. Metallic single-atoms confined in carbon nanomaterials for the electrocatalysis of oxygen reduction, oxygen evolution, and hydrogen evolution reactions. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01408g] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Recent advances of single-atom-based carbon nanomaterials for the ORR, OER, HER, and bifunctional electrocatalysis are covered in this review article.
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Affiliation(s)
- Mohd. Khalid
- Institute of Chemistry of São Carlos
- University of São Paulo
- São Carlos
- Brazil
| | | | - Ana M. B. Honorato
- Department of Macromolecular Science and Engineering
- Case Western Reserve University
- Cleveland
- USA
- Department of Materials Engineering
| | - Hamilton Varela
- Institute of Chemistry of São Carlos
- University of São Paulo
- São Carlos
- Brazil
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80
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Luo M, Liang Z, Chen M, Peera SG, Liu C, Yang H, Qi X, Liu J, Liang T. Catalytic oxidation mechanisms of carbon monoxide over single- and double-vacancy Mn-embedded graphene. NEW J CHEM 2020. [DOI: 10.1039/d0nj01500h] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
CO oxidation on MnC3 and MnC4 has fast kinetics and a low energy barrier.
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Affiliation(s)
- Mingming Luo
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Zhao Liang
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Mingwei Chen
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Shaik Gouse Peera
- Department of Environmental Science and Engineering
- Keimyung University
- Daegu 42601
- Republic of South Korea
| | - Chao Liu
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
- State Key Laboratory of Metastable Materials Science and Technology
- Yanshan University
| | - Hui Yang
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Xiaopeng Qi
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
| | - Juan Liu
- Department of Mining and Materials Engineering
- McGill University
- Montreal
- Canada
| | - Tongxiang Liang
- Engineering Research Center for Hydrogen Energy Materials and Devices, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology
- Ganzhou 341000
- China
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81
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Shi T, Peng Q, Bai Z, Gao F, Jovanovic I. Proton irradiation of graphene: insights from atomistic modeling. NANOSCALE 2019; 11:20754-20765. [PMID: 31651014 DOI: 10.1039/c9nr06502d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Various types of topological defects are produced during proton irradiation, which are crucial in functionalizing graphene, but the mechanisms of the defect generation process and the structure change are still elusive. Herein, we investigated the graphene defect generation probabilities and defect structures under proton irradiation using both ab initio and classical molecular dynamics simulations. As the proton energy increases from 0.1 keV to 100 keV, defect structures transition from single vacancy and Frenkel pairs to a rich variety of topological defects with the possibility of ejecting multiple atoms. We show that, relatively good agreement on defect generation probabilities can be reached between the two simulation approaches at a proton energy of 1 and 10 keV. However, at 0.1 keV, the single vacancy generation probability differs significantly in two methods due to the difference in the energy required to form single vacancy. Using the classical molecular dynamics simulation, we also studied the evolution of different types of defects and the dependence of their probabilities of occurrence on the proton energy and incident angle. The correlation between the impact positions and defect types allows for the convoluted relationship between the defect probabilities, geometric parameters, and proton energy to be elucidated. We show that the proton energy and incident angle can be used to effectively tune the generation probabilities of different types of defects. Our results provide insights into the controlled defect engineering through ion irradiation, which will be useful for the development of functionalized graphene and graphene electronics.
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Affiliation(s)
- Tan Shi
- Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA.
| | - Qing Peng
- Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA.
| | - Zhitong Bai
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - Fei Gao
- Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA.
| | - Igor Jovanovic
- Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA.
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82
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Ananthoju B, Biroju RK, Theis W, Dryfe RAW. Controlled Electrodeposition of Gold on Graphene: Maximization of the Defect-Enhanced Raman Scattering Response. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901555. [PMID: 31112374 DOI: 10.1002/smll.201901555] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/03/2019] [Indexed: 06/09/2023]
Abstract
A reliable method to prepare a surface-enhanced Raman scattering (SERS) active substrate is developed herein, by electrodeposition of gold nanoparticles (Au NPs) on defect-engineered, large area chemical vapour deposition graphene (GR). A plasma treatment strategy is used in order to engineer the structural defects on the basal plane of large area single-layer graphene. This defect-engineered Au functionalized GR, offers reproducible SERS signals over the large area GR surface. The Raman data, along with X-ray photoelectron spectroscopy and analysis of the water contact angle are used to rationalize the functionalization of the graphene layer. It is found that Au NPs functionalization of the "defect-engineered" graphene substrates permits detection of concentrations as low as 10-16 m for the probe molecule Rhodamine B, which offers an outstanding molecular sensing ability. Interestingly, a Raman signal enhancement of up to ≈108 is achieved. Moreover, it is observed that GR effectively quenches the fluorescence background from the Au NPs and molecules due to the strong resonance energy transfer between Au NPs and GR. The results presented offer significant direction for the design and fabrication of ultra-sensitive SERS platforms, and also open up possibilities for novel applications of defect engineered graphene in biosensors, catalysis, and optoelectronic devices.
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Affiliation(s)
- Balakrishna Ananthoju
- School of Chemistry and National Graphene Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Ravi K Biroju
- Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Wolfgang Theis
- Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Robert A W Dryfe
- School of Chemistry and National Graphene Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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83
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Gerber IC, Serp P. A Theory/Experience Description of Support Effects in Carbon-Supported Catalysts. Chem Rev 2019; 120:1250-1349. [DOI: 10.1021/acs.chemrev.9b00209] [Citation(s) in RCA: 274] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Iann C. Gerber
- LPCNO, Université de Toulouse, CNRS, INSA, UPS, 135 avenue de Rangueil, F-31077 Toulouse, France
| | - Philippe Serp
- LCC-CNRS, Université de Toulouse, UPR 8241 CNRS, INPT, 31400 Toulouse, France
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84
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Tang Y, Zhou J, Chen W, Chai H, Li Y, Feng Z, Dai X. Theoretical evaluation on single-atom Fe doped divacancy graphene for catalytic CO and NO oxidation by O2 molecules. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110524] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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85
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Guo X, Lin S, Gu J, Zhang S, Chen Z, Huang S. Simultaneously Achieving High Activity and Selectivity toward Two-Electron O2 Electroreduction: The Power of Single-Atom Catalysts. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02778] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xiangyu Guo
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shiru Lin
- Department of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00931, United States
| | - Jinxing Gu
- Department of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00931, United States
| | - Shengli Zhang
- MIIT Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China
| | - Zhongfang Chen
- Department of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00931, United States
| | - Shiping Huang
- State Key Laboratory of Organic−Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
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86
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Gas‐Phase Dehydrogenation of Alkanes: C−H Activation by a Graphene‐Supported Nickel Single‐Atom Catalyst Model. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907487] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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87
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Borrome M, Gronert S. Gas‐Phase Dehydrogenation of Alkanes: C−H Activation by a Graphene‐Supported Nickel Single‐Atom Catalyst Model. Angew Chem Int Ed Engl 2019; 58:14906-14910. [DOI: 10.1002/anie.201907487] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/23/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Michael Borrome
- Department of Chemistry Virginia Commonwealth University 1001 W. Main St. Richmond VA 23284 USA
| | - Scott Gronert
- Department of Chemistry and Biochemistry University of Wisconsin, Milwaukee 3210 N Cramer St Milwaukee WI 53211 USA
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88
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Tang Y, Chen W, Wu B, Zhao G, Liu Z, Li Y, Dai X. Formation Mechanism, Geometric Stability and Catalytic Activity of a Single Iron Atom Supported on N‐Doped Graphene. Chemphyschem 2019; 20:2506-2517. [DOI: 10.1002/cphc.201900666] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Yanan Tang
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
| | - Weiguang Chen
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
| | - Bingjie Wu
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
| | - Gao Zhao
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
| | - Zhiyong Liu
- College of Physics and Materials Science Henan Normal University Xinxiang Henan 453007 China
| | - Yi Li
- College of Physics and Materials Science Henan Normal University Xinxiang Henan 453007 China
| | - Xianqi Dai
- Quantum Materials Research Center College of physics and Electronic Engineering Zhengzhou Normal University Zhengzhou 450044 China
- College of Physics and Materials Science Henan Normal University Xinxiang Henan 453007 China
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89
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90
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Tran NTT, Nguyen DK, Lin S, Gumbs G, Lin M. Fundamental Properties of Transition‐Metals‐Adsorbed Graphene. Chemphyschem 2019; 20:2473-2481. [DOI: 10.1002/cphc.201900614] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 07/14/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Ngoc Thanh Thuy Tran
- Division of Computational Physics, Institute for Computational Science Ton Duc Thang University Ho Chi Minh City Vietnam
- Faculty of Electrical & Electronics Engineering Ton Duc Thang University Ho Chi Minh City Vietnam
| | - Duy Khanh Nguyen
- Laboratory of Applied Physics, Advanced Institute of Materials Science Ton Duc Thang University Ho Chi Minh City Vietnam
- Faculty of Applied Sciences Ton Duc Thang University Ho Chi Minh City Vietnam
| | - Shih‐Yang Lin
- Department of Physics National Chung Cheng University Chiayi Taiwan
| | - Godfrey Gumbs
- Department of Physics and Astronomy Hunter College of the City University of New York New York USA
| | - Ming‐Fa Lin
- Hierachical Green-Energy Materials (Hi-GEM) Research Center National Cheng Kung University Tainan 70101 Taiwan
- Quantum Topological Center National Cheng Kung University Tainan 701 Taiwan
- Department of Physics National Cheng Kung University Tainan 701 Taiwan
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91
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Chen W, Zhao G, Wu B, Tang Y, Teng D, Dai X. Theoretical study on the catalytic properties of single-atom catalyst stabilised on silicon-doped graphene sheets. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1652368] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Weiguang Chen
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Gao Zhao
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Bingjie Wu
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Yanan Tang
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Da Teng
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
| | - Xianqi Dai
- Quantum materials research Center, College of Physics and Electronic Engineering, Zhengzhou Normal University, Zhengzhou, People’s Republic of China
- College of Physics and Materials Science, Henan Normal University, Xinxiang Henan, People’s Republic of China
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92
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Kropp T, Mavrikakis M. Transition Metal Atoms Embedded in Graphene: How Nitrogen Doping Increases CO Oxidation Activity. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01944] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas Kropp
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Manos Mavrikakis
- Department of Chemical and Biological Engineering, University of Wisconsin—Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
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93
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Carnevali V, Patera LL, Prandini G, Jugovac M, Modesti S, Comelli G, Peressi M, Africh C. Doping of epitaxial graphene by direct incorporation of nickel adatoms. NANOSCALE 2019; 11:10358-10364. [PMID: 31107475 DOI: 10.1039/c9nr01072f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Direct incorporation of Ni adatoms during graphene growth on Ni(111) is evidenced by scanning tunneling microscopy. The structure and energetics of the observed defects is thoroughly characterized at the atomic level on the basis of density functional theory calculations. Our results show the feasibility of a simple scalable method, which could be potentially used for the realization of macroscopic practical devices, to dope graphene with a transition metal. The method exploits the kinetics of the growth process for the incorporation of Ni adatoms in the graphene network.
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Affiliation(s)
- Virginia Carnevali
- Università di Trieste - Dipartimento di Fisica, via Valerio 2, I-34127 Trieste, Italy. (theory) (experiment)
| | - Laerte L Patera
- Università di Trieste - Dipartimento di Fisica, via Valerio 2, I-34127 Trieste, Italy. (theory) (experiment) and IOM-CNR Laboratorio TASC, S.S. 14 km 163.5 in AREA Science Park, Basovizza, I-34149 Trieste, Italy
| | - Gianluca Prandini
- Università di Trieste - Dipartimento di Fisica, via Valerio 2, I-34127 Trieste, Italy. (theory) (experiment)
| | - Matteo Jugovac
- Università di Trieste - Dipartimento di Fisica, via Valerio 2, I-34127 Trieste, Italy. (theory) (experiment)
| | - Silvio Modesti
- Università di Trieste - Dipartimento di Fisica, via Valerio 2, I-34127 Trieste, Italy. (theory) (experiment) and IOM-CNR Laboratorio TASC, S.S. 14 km 163.5 in AREA Science Park, Basovizza, I-34149 Trieste, Italy
| | - Giovanni Comelli
- Università di Trieste - Dipartimento di Fisica, via Valerio 2, I-34127 Trieste, Italy. (theory) (experiment) and IOM-CNR Laboratorio TASC, S.S. 14 km 163.5 in AREA Science Park, Basovizza, I-34149 Trieste, Italy
| | - Maria Peressi
- Università di Trieste - Dipartimento di Fisica, via Valerio 2, I-34127 Trieste, Italy. (theory) (experiment)
| | - Cristina Africh
- IOM-CNR Laboratorio TASC, S.S. 14 km 163.5 in AREA Science Park, Basovizza, I-34149 Trieste, Italy
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94
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Lin C, Li Y, Wei Q, Shen Q, Cheng Y, Huang W. Enhanced Valley Splitting of Transition-Metal Dichalcogenide by Vacancies in Robust Ferromagnetic Insulating Chromium Trihalides. ACS APPLIED MATERIALS & INTERFACES 2019; 11:18858-18864. [PMID: 31037945 DOI: 10.1021/acsami.9b04843] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Recently, single-layer CrI3, a member of the chromium trihalides CrX3 (where X = Cl, Br, or I), has been exfoliated and experimentally demonstrated as an atomically thin material suitable for two-dimensional spintronics. Valley splitting due to the magnetic proximity effect has been demonstrated in a WSe2/CrI3 van der Waals heterojunction. However, the understanding of the mechanisms behind the favorable performance of CrI3 is still limited. Here, we systematically study the carrier mobility and the intrinsic point defects in CrX3 and assess their influence on valley splitting in WSe2/CrI3 by first-principles calculations. The flat-band nature induces extremely large carrier mass and ultralow carrier mobility. In addition, intrinsic point defects-localized states in the middle of the band gap-show deep transition energy levels and act as carrier recombination centers, further lowering the carrier mobility. Moreover, vacancies in CrI3 can enhance ferromagnetism and valley splitting in a WSe2/CrI3 heterojunction, proving that chromium trihalides are excellent ferromagnetic insulators for spintronic and valleytronic applications.
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Affiliation(s)
- Changqing Lin
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , China
| | - Yiran Li
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , China
| | - Qilin Wei
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , China
| | - Qian Shen
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , China
| | - Yingchun Cheng
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , China
| | - Wei Huang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials , Nanjing Tech University , 30 South Puzhu Road , Nanjing 211816 , China
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an , 710072 Shaanxi , China
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95
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Mao X, Zhang L, Kour G, Zhou S, Wang S, Yan C, Zhu Z, Du A. Defective Graphene on the Transition-Metal Surface: Formation of Efficient Bifunctional Catalysts for Oxygen Evolution/Reduction Reactions in Alkaline Media. ACS APPLIED MATERIALS & INTERFACES 2019; 11:17410-17415. [PMID: 31021081 DOI: 10.1021/acsami.9b02588] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Supported single-atom catalysts (SACs) have attracted enormous attention because of their high selectivity, activity, and efficiency, compared to conventional nanoparticles and metal bulk catalysts. However, all of these unique merits rely on the stability of the SAC, as reported by many investigators. To avoid aggregation of single-metal atoms and maintain the high performance of the SAC, various substrates have been tried to support them, particularly on graphene nanosheets. A spontaneous interface phenomenon between graphene and the Co (and Ni) substrate discovered in this work is that the holes in the graphene layer can stimulate metal atoms to pop up from a metal substrate and fill the double vacancy in graphene (DV-G) and stabilize on the graphene surface. The unique structure of the lifted metal atom is expected to be useful for the bifunctional SAC for electrocatalytic oxygen evolution reactions (OERs) and oxygen reduction reactions (ORRs). Our first-principles calculations indicate that the DV-G on the Co(0001) surface can serve as an excellent bifunctional OER/ORR catalyst in alkaline media with extremely low overpotentials of 0.39 V for OER and only 0.36 V for ORR processes, which are even lower than those for previously reported bifunctional catalysts. We believe that the catalytic activity stems from the interface coupling effect between the DV-G and metal substrate, as well as the charge redistribution in the graphitic sheet.
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Affiliation(s)
- Xin Mao
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty , Queensland University of Technology , Gardens Point Campus , Brisbane , Queensland 4001 , Australia
| | - Lei Zhang
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty , Queensland University of Technology , Gardens Point Campus , Brisbane , Queensland 4001 , Australia
| | - Gurpreet Kour
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty , Queensland University of Technology , Gardens Point Campus , Brisbane , Queensland 4001 , Australia
| | - Si Zhou
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty , Queensland University of Technology , Gardens Point Campus , Brisbane , Queensland 4001 , Australia
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education , Dalian University of Technology , Dalian 116024 , China
| | - Sufan Wang
- College of Chemistry and Materials Science , Anhui Normal University , Wuhu 241000 , China
| | - Cheng Yan
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty , Queensland University of Technology , Gardens Point Campus , Brisbane , Queensland 4001 , Australia
| | - Zhonghua Zhu
- School of Chemical Engineering , The University of Queensland , Brisbane 4072 , Australia
| | - Aijun Du
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty , Queensland University of Technology , Gardens Point Campus , Brisbane , Queensland 4001 , Australia
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96
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Luo R, Luo M, Wang Z, Liu P, Song S, Wang X, Chen M. The atomic origin of nickel-doping-induced catalytic enhancement in MoS 2 for electrochemical hydrogen production. NANOSCALE 2019; 11:7123-7128. [PMID: 30919850 DOI: 10.1039/c8nr10023c] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Transition metal (TM) doping has been demonstrated to be an efficacious way to boost the catalytic activity of molybdenum disulfide (MoS2) for energy storage and conversion, especially for the hydrogen evolution reaction (HER). Real-space visualization of the atomic structure of Ni doped MoS2 is crucial to understand the role of heteroatoms in enhancing electrocatalysis. By utilizing aberration corrected scanning transmission electron microscopy (STEM), we found that Ni dopants occupy Mo sites in MoS2 synthesized by a one-pot hydrothermal method. Such selective occupation of the single-atom Ni dopants leads to significant lattice distortion and electronic structure modification of the catalytically inert basal planes of MoS2, which are responsible for the enhanced HER catalysis of MoS2 in both acidic and alkaline solutions.
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Affiliation(s)
- Ruichun Luo
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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97
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Kar M, Sarkar R, Pal S, Sarkar P. Engineering the magnetic properties of PtSe 2 monolayer through transition metal doping. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:145502. [PMID: 30650400 DOI: 10.1088/1361-648x/aaff40] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Using first-principles calculations, we have studied the energetic feasibility and magnetic properties of transition metal (TM) doped PtSe2 monolayers. Our study shows that TM doped PtSe2 layers with 6.25% doping exhibit versatile spintronic behaviour depending on the nature of the dopant TM atoms. Groups IVB and VIII10 TM doped PtSe2 layers are non magnetic semiconductors, while groups IIIB, VB, VIII8, VIII9, IB TM doped PtSe2 layers are half-metals and finally, groups VIB, VIIB and IIB TM doped PtSe2 layers are spin polarized semiconductors. The presence of half-metallic and magnetic semiconducting characteristics suggest that TM doped PtSe2 layers can be considered as a new kind of dilute magnetic semiconductor and thus have the promise to be used in spintronics. By studying the magnetic interactions between two TM dopants in PtSe2 monolayers for dopant concentration of 12.5% and dopant distance of 12.85 [Formula: see text], we have found that in particular, Fe and Ru doped PtSe2 systems are ferromagnetic half-metal having above-room-temperature Curie point of 422 and 379.9 K, respectively. By varying the dopant distance and concentration we have shown that the magnetic interaction is strongly dependent on dopant distance and concentration. Interestingly, the Curie temperature of TM doped PtSe2 layers is affected by the correlation effects on the TM d states and also spin-orbit coupling. We have also studied the magnetic properties of defect complex composed of one TM dopant and one Pt vacancy (TMPt + VPt) which shows novel magnetism.
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Affiliation(s)
- Moumita Kar
- Department of Chemistry, Visva-Bharati University, Santiniketan-731 235, India
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98
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DFT investigation of metal doped graphene capacity for adsorbing of ozone, nitrogen dioxide and sulfur dioxide molecules. ADSORPTION 2019. [DOI: 10.1007/s10450-019-00080-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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99
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Kuang W, Hu R, Fan ZQ, Zhang ZH. Spin-dependent carrier mobility and its gate-voltage modifying effects for functionalized single walled black phosphorus tubes. NANOTECHNOLOGY 2019; 30:145201. [PMID: 30593010 DOI: 10.1088/1361-6528/aafb29] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Phosphorene and its derivatives so far have attracted substantial research interest due to its promising properties for developing nanoscale electronic devices. Here, we present a theoretical investigation on the functionalized features, such as the improved electronic structure and carrier mobility, for armchair-edged single walled black phosphorus nanotubes (PNTs) with the substitutional doping of low-concentration transition-metal atoms (Ti, Mn, Fe, and Ni). They are predicted to be exceptional magnetic semiconductors (MSCs), such as half-semiconductor or bipolar MSC. Their spin-resolved carrier mobility at room temperature holds doping element- dependence as well as carrier and spin polarity. Particularly, the difference by two orders of magnitude for carrier mobility emerges due to different TM doping. More interestingly, the carrier mobility in armchair PNTs serving as the channel material of a spin field effect transistor is predicted to be modified strongly by a gate voltage. The enhanced carrier mobility and its gate voltage direction-dependent behavior, as well as the more obvious carrier and spin polarity of mobility, can be observed clearly under gate voltage, which further facilitates the separation of different carriers and spin states and also suggests that realistic carrier mobility is gate voltage-dependent in a field effect transistor.
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Affiliation(s)
- W Kuang
- Hunan Provincial Key Laboratory of Flexible Electronic Materials Genome Engineering, Changsha University of Science and Technology, Changsha 410114, People's Republic of China
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100
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Liu J, Ma Q, Huang Z, Liu G, Zhang H. Recent Progress in Graphene-Based Noble-Metal Nanocomposites for Electrocatalytic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1800696. [PMID: 30256461 DOI: 10.1002/adma.201800696] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/22/2018] [Indexed: 06/08/2023]
Abstract
The fast industrialization process has led to global challenges in the energy crisis and environmental pollution, which might be solved with clean and renewable energy. Highly efficient electrochemical systems for clean-energy collection require high-performance electrocatalysts, including Au, Pt, Pd, Ru, etc. Graphene, a single-layer 2D carbon nanosheet, possesses many intriguing properties, and has attracted tremendous research attention. Specifically, graphene and graphene derivatives have been utilized as templates for the synthesis of various noble-metal nanocomposites, showing excellent performance in electrocatalytic-energy-conversion applications, such as the hydrogen evolution reaction and CO2 reduction. Herein, the recent progress in graphene-based noble-metal nanocomposites is summarized, focusing on their synthetic methods and electrocatalytic applications. Furthermore, some personal insights on the challenges and possible future work in this research field are proposed.
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Affiliation(s)
- Jiawei Liu
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Qinglang Ma
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Zhiqi Huang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Guigao Liu
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Hua Zhang
- Center for Programmable Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
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