Article
Materials Science, Multidisciplinary
Guiheng Liu, Jianwei Su, Xin Feng, Huiqiao Li, Tianyou Zhai
Summary: Manganese phosphorous selenium (MnPSe3), a representative of layered metal phosphorus trichalcogenides with direct bandgap and high carrier mobility, shows great potential in photoelectric applications. Two-dimensional MnPSe3 flakes exhibit excellent photoresponse to ultraviolet light, making them a strong candidate for future ultraviolet photodetection.
SCIENCE CHINA-MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Hsu-Sheng Tsai, Jing Li, Zhengguang Shi, Mingxue Huo, Shih-Hsin Ho
Summary: This article provides a brief introduction to the mainstream production methods of group IV elemental 2D materials beyond graphene and discusses in detail their electrode applications in alkali-ion batteries. It summarizes the superiority and inferiority of the preparation approaches, the crystal structures of the materials obtained by various methods, the charge-discharge mechanisms causing the improved battery performance, and the urgent challenges as well as possible solutions for future development of alkali-ion batteries with the electrodes of silicene, germanene, or stanene.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Filipa M. Oliveira, Jan Pastika, Iva Plutnarova, Vlastimil Mazanek, Karol Strutynski, Manuel Melle-Franco, Zdenek Sofer, Rui Gusmao
Summary: CuScP2S6 and AgScP2S6 were synthesized and tested as electrocatalysts for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) in alkaline media. CuScP2S6 exhibited high activity for HER, while AgScP2S6 showed strong activity for ORR. The structural difference between the two materials may play a fundamental role in their catalytic performances.
Review
Chemistry, Multidisciplinary
Chen-Xia Hu, Yuyoung Shin, Oliver Read, Cinzia Casiraghi
Summary: Extensive research on liquid-phase exfoliation (LPE) in the past decade has enabled a low-cost and scalable approach to producing a variety of solution-processed 2D materials for various applications. Dispersant-assisted LPE allows for the production of solution-processed 2D materials in a wider range of solvents, overcoming the limitations of specific toxic and expensive solvents.
Review
Chemistry, Multidisciplinary
Wenzhi Yu, Kaiwen Gong, Yanyong Li, Binbin Ding, Lei Li, Yongkang Xu, Rong Wang, Lianbi Li, Guangyu Zhang, Shenghuang Lin
Summary: 2D materials have gained significant attention in the field of nanotechnology due to their unique structures and properties. They play an important role in the development of flexible devices. This review discusses recent progress in improving the state of the art for 2D materials beyond graphene, including their properties, synthesis techniques, advantages, challenges, and future directions towards efficient and low-cost flexible devices.
Review
Nanoscience & Nanotechnology
Huanian Zhang, Shuo Sun, Xinxin Shang, Bo Guo, Xiaohui Li, Xiaohan Chen, Shouzhen Jiang, Han Zhang, Hans Agren, Wenfei Zhang, Guomei Wang, Cheng Lu, Shenggui Fu
Summary: Driven by new two-dimensional materials, significant progress has been made in the field of ultrafast photonics. The emerging single element two-dimensional materials (Xenes) have attracted attention due to their special physical and photoelectric properties. This review introduces in detail the preparation methods and integration strategies of Xenes, summarizes the achievements of Xenes-based fiber lasers, and provides an outlook on the future opportunities and challenges of ultrafast photonics devices based on Xenes and other 2D materials.
Article
Chemistry, Multidisciplinary
Zhen Wang, Hui Xia, Peng Wang, Xiaohao Zhou, Chunsen Liu, Qinghua Zhang, Fang Wang, Menglin Huang, Shiyou Chen, Peisong Wu, Yunfeng Chen, Jiafu Ye, Shenyang Huang, Hugen Yan, Lin Gu, Jinshui Miao, Tianxin Li, Xiaoshuang Chen, Wei Lu, Peng Zhou, Weida Hu
Summary: The study identifies a unique self-modulated doping characteristic in 2D layered materials, allowing for controlled tuning of p-type, intrinsic, and n-type doping in the same material through thickness modulation. Lattice deformation in PtSSe transitions defects from Pt vacancies to anion vacancies, leading to different types of conductance. By modulating thickness, the WSe2 diode demonstrates high rectification ratio and open-circuit voltage, while the PtSSe detector overcomes the issue of large dark current in narrow-bandgap optoelectronic devices. These findings offer a fresh perspective for both fundamental scientific research and practical applications.
ADVANCED MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Jianwei Su, Guiheng Liu, Lixin Liu, Jiazhen Chen, Xiaozong Hu, Yuan Li, Huiqiao Li, Tianyou Zhai
Summary: 2D group VB transition metal chalcogenides (GVTMCs) as emerging 2D metallic materials have significant advantages in electrical transport, magnetism, sensing, and catalysis, attracting considerable research interest.
Article
Multidisciplinary Sciences
Haihui Lan, Luyang Wang, Runze He, Shuyi Huang, Jinqiu Yu, Jinming Guo, Jingrui Luo, Yiling Li, Jinyang Zhang, Jiaxin Lin, Shunping Zhang, Mengqi Zeng, Lei Fu
Summary: The study introduces quasi-layered domino-structured (QLDS) materials that have a unique combination of van der Waals forces and covalent bonds in their interlayers, differentiating them from layered and non-layered materials. This unique feature provides them with distinct mechanical and optical properties, opening up new possibilities for applications in fields such as nonlinear optics, sensors, and catalysis.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Kimmo Mustonen, Christoph Hofer, Peter Kotrusz, Alexander Markevich, Martin Hulman, Clemens Mangler, Toma Susi, Timothy J. Pennycook, Karol Hricovini, Christine Richter, Jannik C. Meyer, Jani Kotakoski, Viera Skakalova
Summary: Researchers have successfully stabilized a 2D structure composed of copper and iodine at room temperature by using graphene oxide as the template material, providing a new method for producing more exotic phases of materials for experiments.
ADVANCED MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Hui Qiao, Huating Liu, Zongyu Huang, Rong Hu, Qian Ma, Jianxin Zhong, Xiang Qi
Summary: Monoelemental 2D materials, with atomic structure similar to graphene, demonstrate excellent optical and electronic properties with potential applications in various fields. This review comprehensively explored the structure, properties, and practical applications of these materials, highlighting their performance in fields such as photoelectric catalysis and solar cells. The understanding gained from this review could guide further development of monoelemental 2D materials.
ENERGY & ENVIRONMENTAL MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Feng Ru Fan, Ruoxing Wang, Hua Zhang, Wenzhuo Wu
Summary: This review highlights the recent advances in energy and catalysis applications of elemental 2D materials beyond graphene, discussing their advantages, structure, properties, material preparation, and various applications in energy harvesting, storage, and catalysis. The challenges and future perspectives for the development of elemental 2D materials in energy and catalysis are also addressed.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Engineering, Environmental
Hsu-Sheng Tsai, You Wang, Chaoming Liu, Tianqi Wang, Mingxue Huo
Summary: This review systematically introduced the properties of elemental two-dimensional materials beyond graphene and their application in gas sensing. It was found that these materials are effective in detecting carbon-, nitrogen-, and sulfur-based gases, as well as organic vapors. However, the challenge lies in the instability of these materials under atmospheric conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Sergio Conejeros, Bogdan Guster, Pere Alemany, Jean-Paul Pouget, Enric Canadell
Summary: Layered group V transition-metal trichalcogenides are low-dimensional materials with various transport properties and polymorphs, based on one-dimensional trigonal-prismatic chains condensing into layers. Differences in electronic structures are linked to subtle structural variances within the layers, resulting in a rich landscape of structures and properties with potential for fine-tuned flakes for new electronic and optoelectronic devices.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Arcangelo Celeste, Rosaria Brescia, Giorgia Greco, Piero Torelli, Silvia Mauri, Laura Silvestri, Vittorio Pellegrini, Sergio Brutti
Summary: Lithium-rich layered oxides (LRLOs) are a new frontier for high-capacity/high-voltage positive electrodes in Li-ion batteries (LIBs). By adjusting the composition of the layered material, optimized electrochemical performance and reduced manufacturing costs can be achieved.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jie Zhong, Liwen Li, Manoj Kumar, Xiao Cheng Zeng, Jun Zhang, Joseph S. Francisco
Summary: The molecular mechanisms of solvation and hydrolysis reactions of isocyanic acid (HNCO) on water droplets at ambient temperature were studied using Born-Oppenheimer molecular dynamics simulations. It was found that the scavenging of HNCO by water droplets is primarily attributed to its preferential adsorption at the air-water interface, and interfacial water promotes proton transfer during the hydrolysis reaction. Compared to the gas phase, the activation barrier on the water surface is significantly lowered, facilitating the formation of key intermediates.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Ning Lu, Kai Wang, Jiaxin Jiang, Hongyan Guo, Gui Zhong Zuo, Zhiwen Zhuo, Xiaojun Wu, Xiao Cheng Zeng
Summary: In this study, a unique lithium growth mechanism called the restricted multilayered growth mechanism and a storage strategy are proposed to achieve high specific capacity and prevent uncontrolled dendritic growth of lithium. Based on computational calculations, it is shown that the Al2C monolayer with a planar tetracoordinate carbon structure can be an ideal two-dimensional anode material, exhibiting ultrahigh specific capacity, low diffusion barrier, and low open circuit voltage.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yilei Wu, Shuaihua Lu, Qionghua Zhou, Ming-Gang Ju, Xiao Cheng Zeng, Jinlan Wang
Summary: This article presents an effective screening approach to search for efficient two-dimensional hybrid organic-inorganic perovskites (2D HOIPs) as room-temperature phosphorescence (RTP) materials. The screening guidelines include the Dexter-type energy transfer mechanism, computed excited-state properties, and molecular morphing operators. A newly proposed tolerance factor is used to assess the structural stability of the 2D HOIPs. Overall, 539 candidates are identified as promising RTP materials, with four 2D HOIPs predicted to have robust room-temperature stability and suitable energy level for optoelectronic applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Bo Zhang, Shuo Sun, Yinglu Jia, Jun Dai, Dhanusha T. N. Rathnayake, Xi Huang, Jade Casasent, Gopi Adhikari, Temban Acha Billy, Yongfeng Lu, Xiao Cheng Zeng, Yinsheng Guo
Summary: This study directly visualizes ferroelastic twin domains in lead halide perovskites and demonstrates their role as internal reflectors for energy transport. The findings show that these domain walls have low energies and can easily switch between different orientations, making them suitable for optical guiding of internal photoexcitations.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yangyan Gao, Xin He, Keke Mao, Christopher K. Russell, Sam Toan, Aron Wang, TeYu Chien, Fangqin Cheng, Armistead G. Russell, Xiao Cheng Zeng, Maohong Fan
Summary: Commercial single-walled carbon nanotubes (CNTs) were activated with nitric acid and urea under ultrasonication and hydrothermal methods, respectively, to prepare N-doped CNTs with -COOH functional groups. The chemically modified CNTs catalyze both CO2 sorption and desorption, with significant increases in desorption rate compared to the sorbent without the catalyst.
Article
Chemistry, Multidisciplinary
Yuan Liu, Jian Jiang, Yangyang Pu, Joseph S. Francisco, Xiao Cheng Zeng
Summary: The study investigates the freezing transition of water confined in double-walled carbon nanotubes using large-scale molecular dynamics simulations. The results show that water can spontaneously form single-walled ice nanotubes with diameters up to 10 nm. Three different types of ice nanotubes are observed. Ab initio molecular dynamics simulations are also performed to examine the stability of the ice nanotubes.
Article
Chemistry, Multidisciplinary
Qun Ji, Yilei Wu, Xinying Gao, Tingbo Zhang, Yipeng Zhou, Yehui Zhang, Ming-Gang Ju, Jinlan Wang, Xiao Cheng Zeng
Summary: Tin organic-inorganic halide perovskites (tin OIHPs) have a desirable band gap and their power conversion efficiency (PCE) has reached 14%. It was previously believed that the organic cations in tin OIHPs had little impact on the optoelectronic properties. However, we found that defective organic cations with randomly dynamic characteristics do have a significant effect on the optoelectronic properties of tin OIHPs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Biwu Chu, Yuan Liu, Hao Li, Yongcheng Jia, Jun Liu, Qing Cao, Tianzeng Chen, Peng Zhang, Qingxin Ma, Xiao Cheng Zeng, Joseph S. Francisco, Hong He
Summary: Using a flow tube reactor, it was discovered that N2O5 can be released from the TiO2 surface during the photocatalytic oxidation of NO2, which provides a previously unreported source of N2O5. The release rate of N2O5 from TiO2 depends on various factors including the initial NO2 concentration, relative humidity, O-2/N-2 ratio, and irradiation intensity. Experimental and theoretical studies show that this release is due to the reaction of NO2 with surface hydroxyl groups and electron holes on TiO2, followed by its combination with another NO2 molecule to form N2O5.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Rui Zhang, Wenshan Liu, Feng-Ming Zhang, Zhao-Di Yang, Guiling Zhang, Xiao Cheng Zeng
Summary: COF-C4N was found to be an effective oxygen evolution reaction (OER) electrocatalyst with low overpotential, and it has ideal N-edge cavities suitable for anchoring transition metal (TM) sites, thereby achieving higher OER activity as single atom catalysts (SACs). Two descriptors for characterizing the OER activities were proposed based on density-functional theory calculations, and Co-COF-C4N and Ni-COF-C4N were theoretically suggested to be highly active and low-cost OER SACs for target synthesis.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Jiaqi Lin, Jiaxin Jiang, Jiaqi Zhang, Hongyan Guo, Xiao Cheng Zeng, Zhiwen Zhuo, Ning Lu
Summary: A new diamond-like boron carbonitride material (BC6N) with excellent mechanical, electronic, and optical properties has been discovered. It can be synthesized easily and has potential applications as a superhard and high-temperature material, as well as in the semiconductor and optical devices fields.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Zhongjun Li, Yahui Zheng, Guojun Li, Hanxi Wang, Weiduo Zhu, Haidi Wang, Zhao Chen, Yupeng Yuan, Xiao Cheng Zeng, Yucheng Wu
Summary: The deviation of the Schottky barrier (SB) in the ultraclean van der Waals contact between 2D MoS2 and 3D In from the Schottky-Mott limit (SML) is investigated. The deviation is found to be attributed to the combined effects of interface potential difference (?V) and Fermi-level shift (?E-F). By coating a thin film of Au, Sc, or Ti on the back side of In, the deviation and the sum of ?V and ?E-F can be reduced. Particularly, the SB is significantly reduced to 0.12 eV in the Ti coating case. This interface engineering can be applied to regulate the SB between a 2D semiconductor and a 3D alloy.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Multidisciplinary Sciences
Bo Lin, Jian Jiang, Xiao Cheng Zeng, Lei Li
Summary: Understanding the phase behavior of nanoconfined water films is important in various fields. This study developed a machine-learning force field to determine the phase diagram of monolayer water/ice in nanoconfinement. Two new high-density ices were discovered, with unique hydrogen-bonding networks. The study also identified the stable region for the lowest-density monolayer ice at negative pressures.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yaxin Gao, Sha Li, Xiao Cheng Zeng, Menghao Wu
Summary: In this study, it is found that valence stratification can cause symmetry breaking and generate ferroelectricity in two-dimensional materials. The monolayer Cu2Cl3 structure with stratified Cu ions into Cu(i) and Cu(ii) layers is obtained through ab initio computation. This unique monolayer not only has lower formation energy than the bulk CuCl + CuCl2, but also exhibits a previously unreported chemical valencing phenomenon through vertical ferroelectric switching. Moreover, the Jahn-Teller distortion of the Cu(ii) layer results in in-plane ferroelectricity and the monolayer's ferroelasticity and ferromagnetism are coupled with in-plane and vertical polarization, respectively, leading to the emergence of 2D triferroicity and triferroic couplings.
Article
Chemistry, Physical
Zhongjun Li, Yahui Zheng, Guojun Li, Hanxi Wang, Weiduo Zhu, Haidi Wang, Zhao Chen, Yupeng Yuan, Xiao Cheng Zeng, Yucheng Wu
Summary: The Schottky barrier (SB) in the van der Waals contact between MoS2 and indium deviates from the Schottky-Mott limit (SML). The deviation is attributed to the combined effects of interface potential difference (Delta V) and Fermi-level shift (Delta EF). Coating a thin film of Au, Sc, or Ti on the back side of indium can mitigate the SB deviation and decrease Delta V and Delta EF. Notably, the Ti coating reduces the SB to 0.12 eV, smaller than the value in the Au coating case.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ning Lu, Xin Hu, Jiaxin Jiang, Hongyan Guo, Gui Zhong Zuo, Zhiwen Zhuo, Xiaojun Wu, Xiao Cheng Zeng
Summary: In this study, the structural stability and electronic properties of point defects in α-antimonene were investigated through first-principles calculations. Compared to analogs like phosphorene, graphene, and silicene, most defects in α-antimonene can be easily generated. Among the nine types of point defects, the single vacancy SV-(5|9) is likely the most stable, with a concentration higher than that in phosphorene. Additionally, the vacancy exhibits low diffusion barriers in the zigzag/armchair direction.