Article
Chemistry, Physical
Dominique B. Schuepfer, Felix Badaczewski, Jan Peilstoecker, Juan Manuel Guerra-Castro, Hwirim Shim, Saleh Firoozabadi, Andreas Beyer, Kerstin Volz, Volker Presser, Christian Heiliger, Bernd Smarsly, Peter J. Klar
Summary: This study investigates the transformation process of purely sp(3)-hybridized carbons into sp(2)-hybridized non-graphitic and graphitic carbon, focusing on nanodiamond and adamantane as precursors. The structural changes of disordered carbon are characterized using Raman spectroscopy, WAXS, and TEM, with a correlation between Raman bands and crystallite size. The behavior of different carbon forms formed from sp(3)-structured precursors agrees well with those from sp(2)-structured precursors.
Article
Materials Science, Multidisciplinary
Kun Bu, Jian-Tao Wang
Summary: We conducted a systematic study on the structural, energetic, dynamical, and electronic properties of cT16 carbon and discovered its linkage with all-ten-membered carbon rings. Our calculations showed that cT16 carbon is dynamically and thermally stable. Moreover, we revealed that cT16 carbon is a topological nodal line semimetal with a large closed nodal ring. The simulated x-ray diffraction pattern of cT16 carbon matches well with a previously unexplained experimental peak.
Review
Chemistry, Multidisciplinary
Jana Vejpravova
Summary: The review discusses the unique properties and application potential of carbon nanomaterials, including the interaction and transformation between different carbon networks, as well as the emergence of novel structures and potential applications in the sp(2)-sp(3) nanocarbon hybrid systems. Further exploration of the two-way sp(2) to sp(3) transformations at the nanoscale is also highlighted for innovative fabrication and chemical reactivity assessment.
Article
Chemistry, Multidisciplinary
Suzhen Kong, Dong Cai, Guifa Li, Xiangju Xu, Suya Zhou, Xinwei Ding, Yongqin Zhang, Shuo Yang, Xuemei Zhou, Huagui Nie, Shaoming Huang, Ping Peng, Zhi Yang
Summary: An all-carbon interlayer with high specific surface area was designed and prepared to overcome the shuttle effect in lithium-sulfur batteries by coating graphene and hydrogen-substituted graphdiyne on a cathode. The material exhibited excellent cycling stability by enabling fast physical adsorption and chemical anchoring of lithium polysulfides, mitigating the shuttling problem and promoting conversion reaction.
Article
Materials Science, Multidisciplinary
Jian-Tao Wang, Kun Bu, Yuting Qian, Hongming Weng, Changfeng Chen
Summary: Recent research has identified a new all-sp(2) carbon allotrope, mpg-C-8 pentagraphite, with stable structure and unique electronic properties as a topological nodal-line semimetal.
Article
Chemistry, Physical
Wenhao Li, Wenya He, Xijie Chen, Tianxiao Chen, Yun Wu, Chuan Li, Xin Zhang, Le Yu, Fengchun Yang
Summary: The electronic structure, especially the density of states, of electrode materials play a dominant role in electron transfer kinetics for redox reactions. Hybridized carbon nanomaterials with adjustable density of states offer promise in constructing high performance electrodes. Modulating the electronic structure through doping electron donors and acceptors can tailor the electrocatalytic properties for specific redox reactions.
Article
Chemistry, Multidisciplinary
Bin Mu, Liang Wang, Zhongke Yang, Xiao Luo, Wei Tian
Summary: Here, we report a novel topological transformable supramolecular polymer that is capable of converting its architecture from a two-dimensional to a one-dimensional structure through the precise control of the steric configuration of constituent monomers.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Peifeng Yu, Weicai Zhang, Yingliang Liu, Mingtao Zheng, Fei Xu, Yeru Liang
Summary: This study demonstrates a successful approach to achieve ultrahigh surface areas and high carbonization yields in carbonaceous materials by constructing nitrogen-doped sp(2)-hybridized carbon atoms to guide pore-creating agents. This provides important insights for the directed synthesis of high-surface-area carbons and their potential applications.
Review
Engineering, Biomedical
Eduardo Anaya-Plaza, Ahmed Shaukat, Inka Lehtonen, Mauri A. Kostiainen
Summary: The strategy of combining biomolecules and synthetic components to develop biohybrids is becoming increasingly popular for preparing highly customized and biocompatible functional materials， allowing the excellent properties of carbon nanotubes (CNTs) to be applied to biomedical applications. The resulting well-defined composites of CNTs conjugated with relevant biomolecules enable the exploitation of nanoscale properties at the micro- and macroscale, with potential applications in tissue engineering, sensors, and wearable electronics. This review presents the underlying chemistry behind the CNT-based biohybrid materials and discusses the future directions of the field.
ADVANCED HEALTHCARE MATERIALS
(2021)
Article
Physics, Multidisciplinary
Muhammad Rizwan Khan, Kun Bu, Jian-Tao Wang
Summary: We have identified a new carbon allotrope, bcm-C-16, as a topological nodal line semimetal with a single closed nodal ring. The electronic properties of bcm-C-16 carbon are protected by spatial inversion and time-reversal symmetry. The surface states of bcm-C-16 carbon show a topologically protected drumhead-like structure inside or outside the nodal ring, depending on the surface termination. Additionally, bcm-C-16 carbon exhibits robustness under tensile strain along certain crystal directions.
NEW JOURNAL OF PHYSICS
(2022)
Article
Thermodynamics
Penghua Ying, Ting Liang, Yao Du, Jin Zhang, Xiaoliang Zeng, Zheng Zhong
Summary: The thermal transport properties of biphenylene network were comprehensively investigated and found to have significantly lower thermal conductivities compared to graphene and pentaheptite due to the decline in structural symmetry leading to reduced phonon group velocity and mean free path.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Multidisciplinary
John Bulmer, Michelle Duran-Chaves, Daniel M. Long, Jeremiah Lipp, Steven Williams, Mitchell Trafford, Anthony Pelton, Jared Shank, Benji Maruyama, Lawrence F. Drummy, Matteo Pasquali, Hilmar Koerner, Timothy Haugan
Summary: A mechanically robust wire formed by self-assembled fullerene supramolecules between carbon nanotube bundles is presented, where the internal crystal structure and outer surface of the supramolecules are aligned and dispersed with the CNT bundles. Crucial production processes, such as fullerene concentration and postprocess annealing, impact the crystallinity, crystal dimensions, and other structural features of the fullerene supramolecular network. The addition of networked fullerenes at low concentrations enhances the mechanical strength of the CNT wire, and the novel mutually aligned and networked fullerene supramolecules form a bulk self-supporting architecture.
Article
Chemistry, Analytical
Seoho Jung, Roland Hauert, Miroslav Haluska, Cosmin Roman, Christofer Hierold
Summary: By using Ar-ion etching to remove the top layer of the electrode surface before nanotube placement, the contact resistance at the nanotube-metal interface can be significantly reduced. This results in a tenfold decrease in the median ON-resistance of transistors and a more than two orders of magnitude decrease in the interquartile range of resistance values.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Nanoscience & Nanotechnology
Tathagata Srimani, Jianfu Ding, Andrew Yu, Pritpal Kanhaiya, Christian Lau, Rebecca Ho, Jefford Humes, Christopher T. Kingston, Patrick R. L. Malenfant, Max M. Shulaker
Summary: This study investigates the impact of CNT synthesis sources and polymer additives on the electrical performance of transistors and determines the best combination. It also achieves high-purity CNT solution through electrical measurements.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Multidisciplinary Sciences
Zhiwang Zhang, Penglin Gao, Wenjie Liu, Zichong Yue, Ying Cheng, Xiaojun Liu, Johan Christensen
Summary: The authors engineer an artificial honeycomb lattice in single-wall carbon nanotubes and explore their topological features for sound. They find that armchair tubes remain gapless while the zigzag counterparts host nontrivial edge states. The structured tubular lattice symmetry remains intact, and its nontrivial phase is governed by the chirality and the tube diameter. This research has broad implications for various fields such as acoustics, photonics, mechanics, and electronics.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Fengning Liu, Pai Li, Hao An, Peng Peng, Ben McLean, Feng Ding
Summary: This article discusses the importance of controlled synthesis of large-area and high-quality graphene, summarizes previous theoretical and experimental studies, and identifies future challenges and directions for graphene growth.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Deping Huang, Yinwu Duan, Leining Zhang, Xin li, Yongna Zhang, Feng Ding, Jing Guo, Xiaoxu Huang, Zhancheng Li, Haofei Shi
Summary: This article investigates the effects of twin boundaries on graphene growth. The results show that after crossing twin boundaries, graphene islands experience different compressive strains but do not form linear defects. Additionally, the formation of graphene doping can be manipulated with the type and location of twin boundaries.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jinhua Hong, Xi Chen, Pai Li, Masanori Koshino, Shisheng Li, Hua Xu, Zhixin Hu, Feng Ding, Kazu Suenaga
Summary: In this study, novel 2D phases with different stoichiometries were fabricated in monolayer MoS2 and MoSe2 using in situ electron microscopy. Highly localized and atomically sharp multiphase transformations were observed, and their atomic mechanisms were determined.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Bosai Lyu, Jiajun Chen, Shuo Lou, Can Li, Lu Qiu, Wengen Ouyang, Jingxu Xie, Izaac Mitchell, Tongyao Wu, Aolin Deng, Cheng Hu, Xianliang Zhou, Peiyue Shen, Saiqun Ma, Zhenghan Wu, Kenji Watanabe, Takashi Taniguchi, Xiaoqun Wang, Qi Liang, Jinfeng Jia, Michael Urbakh, Oded Hod, Feng Ding, Shiyong Wang, Zhiwen Shi
Summary: Graphene nanoribbons (GNRs) are promising materials for future nanoelectronic applications, but growing long GNRs on insulating substrates remains a challenge. This study reports the successful epitaxial growth of micrometer-long GNRs on an insulating substrate using nanoparticle-catalyzed chemical vapor deposition.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Jichen Dong, Yunqi Liu, Feng Ding
Summary: This study provides a comprehensive investigation on the formation mechanisms of various 2D polycrystals, revealing that the structures depend on the symmetries of both the 2D material and the substrate. Four libraries of 2D polycrystals are built, which are consistent with experimental observations and can guide the experimental synthesis of different 2D polycrystals.
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Haibin Sun, Fengning Liu, Leining Zhang, Kyungmin Ko, Ben McLean, Hao An, Sungkyun Kim, Ming Huang, Marc-Georg Willinger, Rodney S. Ruoff, Joonki Suh, Zhu-Jun Wang, Feng Ding
Summary: One-dimensional graphene nanostructures, such as graphene nanoribbons (GNRs) and graphene nanospears (GNSs), have shown great promise for next-generation electronics. This study reports on the growth of GNRs and GNSs on a copper surface using chemical vapor deposition. The growth mechanism involves a vapor-liquid-solid (VLS) process guided by the on-surface propagation of a liquid Cu-Si catalyst particle. The resulting GNRs and GNSs have high carrier mobilities and their Fermi levels can be tuned, making them suitable for various applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Hao Ma, Wen Zhao, Qian Zhang, Dongyuan Liu, Hao Ren, Houyu Zhu, Yuhua Chi, Feng Ding, Wenyue Guo
Summary: A novel 2D semiconductor, MoSi2N4 monolayer, has been successfully synthesized and shows promising potential for applications in nanoelectronic devices and catalysis. This study investigates the intrinsic point defects in MoSi2N4 monolayer, including vacancies, antisites, and adatoms, and analyzes their thermodynamic stabilities and electronic properties. The presence of certain defects leads to interesting properties, such as recombination centers, p-type and n-type conducting characters, and unusual resistance-temperature dependence behavior. The migration behavior of point defects is also studied, revealing the relative stability and detectability of different defects. This work provides valuable insights for defect engineering in MoSi2N4 monolayer and its family of materials.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Jiadong Zhou, Chao Zhu, Yao Zhou, Jichen Dong, Peiling Li, Zhaowei Zhang, Zhen Wang, Yung-Chang Lin, Jia Shi, Runwu Zhang, Yanzhen Zheng, Huimei Yu, Bijun Tang, Fucai Liu, Lin Wang, Liwei Liu, Gui-Bin Liu, Weida Hu, Yanfeng Gao, Haitao Yang, Weibo Gao, Li Lu, Yeliang Wang, Kazu Suenaga, Guangtong Liu, Feng Ding, Yugui Yao, Zheng Liu
Summary: This study reveals a competitive-chemical-reaction-based growth mechanism that allows for the growth of transition metal chalcogenides and transition metal phosphorous chalcogenides with different compositions and phases. It provides an interesting platform for the exploration of 2D TMPCs and TMCs.
Article
Chemistry, Multidisciplinary
Ruixue Ma, Lu Qiu, Lili Zhang, Dai-Ming Tang, Yang Wang, Bingsen Zhang, Feng Ding, Chang Liu, Hui-Ming Cheng
Summary: This study reveals the nucleation mechanism of single-wall carbon nanotubes (SWCNTs) from faceted Pt catalysts under atmospheric pressure using a transmission electron microscope. The formation of graphene layers on specific surfaces was found to be the initial stage of SWCNT nucleation, followed by the formation of an annular belt and a hemispherical cap, and then the elongation of the SWCNT. Based on the observations, an annular belt assembly nucleation model and a possible chirality control mechanism are proposed, providing useful guidance for the controlled synthesis of SWCNTs by catalyst design.
Article
Chemistry, Multidisciplinary
Jichen Dong, Degong Ding, Chuanhong Jin, Yunqi Liu, Feng Ding
Summary: We present a systematic theoretical study on the CVD growth mechanism of MoS2 and propose a transition of growth from Mo-II edges to S-III edges and Mo-III edges by tuning the growth condition from Mo-rich to S-rich. This study provides a general guideline on theoretical studies of 2D crystals' growth mechanisms and deepens our understanding on the growth mechanism of multielement 2D crystals.
Article
Chemistry, Physical
Ziwei Xu, Feng Ding
Summary: This study reveals that the shape of the catalyst has an impact on the formation process of SWCNTs, and that using catalyst particles with higher curvature and catalytic reactions involving Pt adatom on the catalyst surface can promote the synthesis of SWCNTs.
Article
Chemistry, Physical
Yunjae Park, Yong Wang, Vladislav Gladkikh, Daniel Hedman, Xiao Kong, Feng Ding
Summary: In this study, the thermodynamic properties of two-dimensional boron materials were explored through DFT and Monte Carlo simulations. New phases of borophene were discovered, including a glass state, liquid borophene, and borophene with large holes. A phase diagram of borophene was constructed to guide future experiments at high temperatures.
NANOSCALE HORIZONS
(2023)
Article
Multidisciplinary Sciences
Lu Qiu, Xiuyun Zhang, Xiao Kong, Izaac Mitchell, Tianying Yan, Sung Youb Kim, Boris I. Yakobson, Feng Ding
Summary: In chemistry, the theory of aromaticity or pi bond resonance is crucial for understanding the stability and properties of organic molecules. This study presents an analogue theory for sigma bond resonance in flat boron materials, allowing for the determination of two-center two-electron and three-center two-electron bond distributions without quantum calculations. Based on this theory, three rules are proposed for drawing Kekule-like bonding configurations and exploring properties of flat boron materials. Additionally, the theory is applied to explain the stability of neutral borophene with approximately 1/9 hole occupancy and the effect of charge doping on borophene's optimal hole concentration. This theory enhances our understanding of boron materials and facilitates the rational design of boron-based materials.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Wookhee Lee, Daniel Hedman, Jichen Dong, Leining Zhang, Zonghoon Lee, Sung Youb Kim, Feng Ding
Summary: It is necessary to consider the kink energy, which is the energy of the junction between armchair and zigzag sites, when accurately calculating the formation energy of graphene edges with various functional groups. The kink energies of graphene edges with different functional groups are all negative, indicating that kink formation stabilizes the chiral graphene edges.
Review
Chemistry, Multidisciplinary
Xiao Kong, Chengrui Fu, Vladislav Gladkikh, Feng Ding
Summary: The review summarizes the shapes and growth/etching mechanisms of 2D islands in the chemical vapor deposition (CVD) process. It discusses various aspects including attachment-limited and diffusion-limited growth, etching, and merging of 2D materials. The review also explores the growth and etching of multilayered 2D islands during CVD, which is an ongoing topic of research.
