Article
Crystallography
Zanlin Qiu, Joerg R. R. Jinschek, Pelagia-Irene Gouma
Summary: This study presents a reliable method for obtaining hexagonal tungsten trioxide (h-WO3) through solvothermal synthesis and dehydration annealing, and investigates the effects of precursor concentration, water content, synthesis temperature, synthesis time, and dehydration temperature on the crystal structure and morphology of the synthesized h-WO3.
Article
Chemistry, Physical
Xu Dong, Yadan Wei, Ju Gao, Xianhua Liu, Lihong Zhang, Yindong Tong, Yiren Lu
Summary: This work investigates the photogenerated charge transfer of Cu-doped hexagonal WO3 and finds that Cu ions act as the electron acceptor, leading to efficient charge transfer. The formed Cu-O-W linkages facilitate the prioritized photoreduction of Cu over W species, resulting in color switching from blue to gray.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Lama Khalil, Cyrine Ernandes, Jose Avila, Adrien Rousseau, Pavel Dudin, Nikolai D. Zhigadlo, Guillaume Cassabois, Bernard Gil, Fabrice Oehler, Julien Chaste, Abdelkarim Ouerghi
Summary: In this study, we demonstrate the stable growth of p-type hexagonal boron nitride (h-BN) by using Mg atoms as substitutional impurities. Our experiments involving micro-Raman spectroscopy, nano-ARPES, and KPFM show that Mg-doping significantly alters the electronic properties of h-BN. The Mg dopants shift the valence band maximum and result in a reduced Fermi level difference between pristine and Mg-doped h-BN crystals. This research establishes Mg-doping as a promising method for high-quality p-type doped h-BN films, which are crucial for applications in deep ultraviolet LEDs and wide bandgap optoelectronic devices.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Analytical
Owen O. Abe, Zanlin Qiu, Joerg R. Jinschek, Pelagia-Irene Gouma
Summary: This research investigated the gas sensing performance of two different configurations of the h-WO3 polymorph produced by different processing routes, showing that the (100) textured sample had a higher response to acetone, while the (001) textured sample favored isoprene. The selectivity of the latter to isoprene is explained in terms of the dangling bonds present on the (001) facets.
Article
Nanoscience & Nanotechnology
A. Li, H. I. T. Hauge, M. A. Verheijen, E. P. A. M. Bakkers, R. T. Tucker, L. Vincent, C. Renard
Summary: Recently, the growth of hexagonal Si and SiGe nanowire branches on a wurtzite substrate has been demonstrated, which holds great potential for silicon technology. The vapor-liquid-solid growth mode was used and the process was confirmed by in situ transmission electron microscopy. It was also shown that the composition of the nanowire branches can be tuned and Si and SiGe heterostructures can be achieved.
Article
Materials Science, Multidisciplinary
Sebastien Roux, Christophe Arnold, Fulvio Paleari, Lorenzo Sponza, Eli Janzen, James H. Edgar, Berangere Toury, Catherine Journet, Vincent Garnier, Philippe Steyer, Takashi Taniguchi, Kenji Watanabe, Francois Ducastelle, Annick Loiseau, Julien Barjon
Summary: Using a time-resolved cathodoluminescence system, the radiative lifetime of free excitons in hBN was estimated to be 27 ns at room temperature, much shorter than in other indirect band gap semiconductors. This is due to the close proximity of the electron and the hole in the exciton complex, as well as the small energy difference between indirect and direct excitons, explaining the unusually high luminescence efficiency of hBN for an indirect band gap.
Article
Chemistry, Physical
Runce Rong, Limin Wang
Summary: In this study, novel hierarchical hollow nest-like WO3 micro/nanostructures were successfully synthesized using a facile hydrothermal method. The nanostructures were characterized and found to exhibit excellent photocatalytic activity towards tetracycline in water, as well as good stability and reusability under visible light. This research provides a reliable strategy for the simple and controllable preparation of hollow photocatalysts for wastewater treatment applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Zhenhua Wang, Guoxin Chen, Hongliang Zhang, Lingyan Liang, Junhua Gao, Hongtao Cao
Summary: This study investigates the dynamic phase transformation and morphology evolution of h-WO3 nanowire during deep lithiation using an in situ single nanowire-based cell. It reveals the irreversible transformation from h-WO3 to Li2WO4 and the presence of deep ion-trapping sites in the Li2WO4 crystal structure. By triggering lithium-ion migration at the WO3/electrolyte interface and visualizing nanoscale lithium-ion migration, the mechanism of irreversible WO3-to-Li2WO4 transformation in deep lithiation reaction is demonstrated.
SCRIPTA MATERIALIA
(2021)
Review
Chemistry, Multidisciplinary
Yueqi Li, Qin Zhou, Shoubing Ding, Zhimin Wu
Summary: This article mainly introduces the two-dimensional hexagonal tungsten trioxide (2D h-WO3) in metal oxide semiconductor gas sensing materials, discusses its characteristics, and the effects of microstructure, oxygen vacancy, and doping modification on its gas sensing properties. Finally, the application and research directions of 2D h-WO3 gas sensing materials are proposed.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Giacometta Mineo, Mario Scuderi, Elena Bruno, Salvo Mirabella
Summary: In this study, hexagonal/monoclinic WO3 phase junctions were formed by calcination of WO3 nanorods at 400 degrees C, leading to improved catalytic performance for HER. The highest efficiency of HER was achieved when WO3 nanorods exhibited comparable volumes of hexagonal and monoclinic phases.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yifei Li, Xin Wen, Changjie Tan, Ning Li, Ruijie Li, Xinyu Huang, Huifeng Tian, Zhixin Yao, PeiChi Liao, Shulei Yu, Shizhuo Liu, Zhenjiang Li, Junjie Guo, Yuan Huang, Peng Gao, Lifen Wang, Shulin Bai, Lei Liu
Summary: This study presents a method for the single-metal flux growth of large-area, high-quality hBN films, which can be achieved in laboratory settings and used for macroscopic applications.
Article
Materials Science, Multidisciplinary
Xide Chang, Xu Dong, Xianhua Liu, Yindong Tong, Kaixiang Li, Zhenguo Li, Yiren Lu
Summary: Mixed-phase composites with an optimal phase ratio exhibit improved light utilization compared to monophasic materials. This study focuses on optimizing the phase ratio of hexagonal WO3 (h-WO3·0.33H2O) and orthorhombic WO3·H2O (o-WO3·H2O) to enhance the photochromism of tungsten oxide. The formation of a phase junction between h-WO3·0.33H2O and o-WO3·H2O leads to superior photochromic properties and efficient charge carrier separation and transfer.
Article
Nanoscience & Nanotechnology
Wendi Tian, Yan Wang, Yan Zhang, Jianliang Cao, Rong-Feng Guan
Summary: The hybrid metal/semiconductor nanocomposites provide a flexible strategy for exploring effective chemiresistive gas sensors. The WO3/h-BN nanostructure with 5 wt % h-BN content shows the most outstanding response to 500 ppm of TEA at 260 degrees C, nearly 2.2 times higher than pristine WO3. These results demonstrate the potential application of h-BN in high-performance gas sensors in the future.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Wei Li, Tingting Wang, Dongdong Huang, Chan Zheng, Yuekun Lai, Xueqing Xiao, Shuguang Cai, Wenzhe Chen
Summary: The hierarchical microstructure of hexagonal WO3·0.33H2O prepared by the hydrothermal method showed larger specific surface area and narrower bandgap compared to isolated nanorods. The enhanced photocatalytic activity of the hierarchical microstructure can be attributed to its unique structure, making it suitable for various applications.
Article
Chemistry, Physical
Valeriy V. V. Badikov, Dmitrii V. V. Badikov, Galina S. S. Shevyrdyaeva, Kiyoshi Kato, Nobuhiro Umemura, Kentaro Miyata, Vladimir L. L. Panyutin, Valentin Petrov
Summary: The non-centrosymmetric hexagonal Ba2Ga8GeS16 crystal with good optical quality is grown for the first time using the vertical Bridgman-Stockbarger technique. The linear and nonlinear properties of this crystal for the mid-IR spectrum are studied.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Multidisciplinary
Shuoqing Zhao, Kang Yan, Jinqiang Zhang, Bing Sun, Guoxiu Wang
Summary: Layered lithium-rich cathode materials with high theoretical specific capacity have regained interest due to the increasing reliance on high-energy-density lithium-ion batteries. Research progress on the structure characterization and reaction mechanisms of these materials has been reviewed, focusing on both cationic and anionic redox reactions. The future development of lithium-rich cathode materials for next-generation lithium-ion batteries faces opportunities and challenges.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Shuoqing Zhao, Ziqi Guo, Kang Yan, Shuwei Wan, Fengrong He, Bing Sun, Guoxiu Wang
Summary: The article summarizes various strategies for improving the performance of layered lithium-rich cathode materials for next-generation high-energy-density lithium-ion batteries. These strategies include surface engineering, elemental doping, composition optimization, structure engineering, and electrolyte additives, with emphasis on the effect and functional mechanism of corresponding techniques. Opportunities and challenges for designing high-performance lithium-rich cathode materials and bridging the gap between laboratory and practical applications are also discussed.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Shuoqing Zhao, Ziqi Guo, Jian Yang, Chengyin Wang, Bing Sun, Guoxiu Wang
Summary: Using nanoengineering strategies to enhance the electrochemical performance and structural stability of carbon-based anode materials in sodium-ion batteries shows promising potential. Further exploration of improvement methods is necessary to increase the competitiveness of sodium-ion batteries.
Article
Chemistry, Multidisciplinary
Shuoqing Zhao, Kang Yan, Jiayu Liang, Qinghong Yuan, Jinqiang Zhang, Bing Sun, Paul Munroe, Guoxiu Wang
Summary: By designing phosphorus/oxygen dual-doped porous carbon spheres, this study achieved expanded interlayer distances, abundant redox active sites, and oxygen-rich defects, leading to high discharge capacity, outstanding rate capability, and ultralong cycling stability. The formation of P-C and P-O/P-OH bonds improved structural stability and contributed to a rapid surface-controlled potassium adsorption process, showing superior electrochemical performance in a potassium-ion hybrid capacitor.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jiang Qu, Yang Li, Fei Li, Tianming Li, Xiaoyu Wang, Yin Yin, Libo Ma, Oliver G. Schmidt, Feng Zhu
Summary: This study designed and fabricated an on-chip MoS2 ML HER reactor, revealing the direct thermal enhancement of MoS2 ML for HER activity. The experimental results showed that the MoS2 ML measured at a higher temperature has higher activity and lower overpotential.
Article
Chemistry, Multidisciplinary
Shuoqing Zhao, Zhichao Liu, Guanshun Xie, Xin Guo, Ziqi Guo, Fei Song, Guohao Li, Chi Chen, Xiuqiang Xie, Nan Zhang, Bing Sun, Shaojun Guo, Guoxiu Wang
Summary: A three-dimensional K+-pre-intercalated Ti3C2Tx MXene was constructed for efficient electrochemical potassium-ion storage, and the optimized solvation structure of the concentrated ether-based electrolyte led to the formation of a thin and inorganic-rich solid electrolyte interphase on the electrode, showing promising electrochemical performances. These results highlight the significant roles of rational structure design and electrolyte optimization for highly reactive MXene-based anode materials in energy storage devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Multidisciplinary Sciences
Tianming Li, Martin Hantusch, Jiang Qu, Vineeth Kumar Bandari, Martin Knupfer, Feng Zhu, Oliver G. Schmidt
Summary: The article introduces integrated molecular devices based on ultrathin copper phthalocyanine/fullerene hybrid layers, assembled using rolled-up nanotechnology on chips, capable of switching between photomultiplication and memristive behavior. By modulating the ion-electronic charge interaction, high external quantum efficiency photomultiplication and remarkable resistive ON/OFF ratio memristive switching are achieved.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Tianming Li, Vineeth Kumar Bandari, Oliver G. Schmidt
Summary: Molecular electronics aims to extend Moore's law by incorporating individual or ensemble molecules into electronic circuits for next-generation electronics. Over the past 50 years, various techniques have been developed to explore the intrinsic properties of molecules and create diverse molecular electronic devices. The flourishing of molecular electronics is closely related to the development of elegant methodologies for creating nanogap electrodes and bridging them with molecules. This review focuses on the techniques for making nanogap electrodes and constructing molecular circuits, highlighting their capabilities, applications, and future perspectives.
ADVANCED MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Zhen Jiang, Dongfeng Shi, Jin Zhang, Tianming Li, Liwei Lu
Summary: Texture evolution in rolled Mg-1 wt% Zn and Mg-1 wt% Y binary alloys was analyzed using quasi-in situ electron backscatter diffraction (EBSD) during static recrystallization. Mg-1 wt% Zn and Mg-1 wt% Y alloys exhibited strong basal texture at the initial recrystallization state. Zn and Y atoms segregated strongly to the grain boundaries, resulting in different grain boundary migration directions and different outcomes in texture evolution.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Pauline Jaumaux, Shijian Wang, Shuoqing Zhao, Bing Sun, Guoxiu Wang
Summary: In this study, N-methylformamide (NMF) was introduced as an organic solvent and its solvation structure was modulated to obtain a stable organic/aqueous hybrid electrolyte for high-voltage Zn batteries. NMF showed excellent stability against Zn metal anodes and reduced the availability of free water molecules by creating numerous hydrogen bonds, allowing for the use of high-voltage Zn||LiMn2O4 batteries. The introduction of NMF prevented hydrogen evolution reaction and promoted the formation of an F-rich solid electrolyte interphase, thereby inhibiting dendrite growth on Zn anodes. The Zn||LiMn2O4 full cells exhibited a high average Coulombic efficiency of 99.7% over 400 cycles.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Youxing Liu, Hao Tan, Yanan Wei, Minghui Liu, Jiaxin Hong, Wenqiang Gao, Shuoqing Zhao, Shipeng Zhang, Shaojun Guo
Summary: Researchers designed and constructed Cu2O/2D PyTTA-TPA COFs (PyTTA: 1,3,6,8-Tetrakis(4-aminophenyl)pyrene, TPA: p-benzaldehyde) core/shell nanocubes to greatly enhance the photocatalytic hydrogen evolution performance and inhibit photocorrosion.
Article
Nanoscience & Nanotechnology
Majid Farahmandjou, Shuoqing Zhao, Wei-Hong Lai, Bing Sun, Peter. H. L. Notten, Guoxiu Wang
Summary: Lithium-rich oxide compounds have shown promise as cathode materials for high performance Li-ion batteries due to their high specific capacity. However, achieving fully reversible anionic redox reactions for these materials remains a challenge. This article summarizes recent research progress in understanding and controlling the anionic redox chemistry of lithium-rich cathode materials, with a focus on oxygen-based redox reactions. Promising strategies for improving the performance of these materials are also proposed.
NANO MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Shuoqing Zhao, Zhichao Liu, Guanshun Xie, Ziqi Guo, Shuguang Wang, Jinhui Zhou, Xiuqiang Xie, Bing Sun, Shaojun Guo, Guoxiu Wang
Summary: This study presents an economic and facile potassium compensation strategy using a self-sacrificial agent (K2C4O4) on cathodes to enhance the performance of potassium-ion batteries. The addition of K2C4O4 significantly improves the initial Coulombic efficiency and promotes the formation of a thin and F-rich cathode electrolyte interphase layer, leading to improved kinetics and interfacial stability. A potassium-compensated full cell shows three times higher energy density and enhanced capacity retention compared to a cell without any pre-potassiation treatment.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhichao Liu, Shuoqing Zhao, Guohao Li, Chi Chen, Xiuqiang Xie, Zhenjun Wu, Nan Zhang
Summary: This study proposes a two-dimensional van der Waals heterostructure with bismuth oxychloride nanosheets anchored on MXene nanosheets, which improves the performance of anode materials for potassium-ion batteries through reasonable material design and electrolyte optimization. The composite material shows high reversible specific capacity and cycling stability, providing important insights for the development of stable high-performance PIB anodes.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Chemistry, Physical
Shuoqing Zhao, Ziqi Guo, Kang Yan, Xin Guo, Shuwei Wan, Fengrong He, Bing Sun, Guoxiu Wang
Summary: PBAs as potential cathode materials for PIBs have unique crystal structure and advantages, enabling fast charge-discharge without causing volume expansion, and performing well in both aqueous and non-aqueous PIBs.
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
