Article
Chemistry, Multidisciplinary
Ivan Vasilievich Bodrikov, Anna Gennadevna Ivanova, Alexander Leonidovich Vasiliev, Evgeny Yurievich Titov, Dmitry Yurievich Titov, Anton Igorevich Serov
Summary: The study revealed the correlation between the morphology and other characteristics of nanostructures obtained in the induced transformation of benzene by low-voltage pulsed discharges, as well as the different carbon nanostructures formed at different energies.
Article
Engineering, Chemical
Norihiro Shimoi, Shoichi Kumon
Summary: Field emission electron sources based on high-purity and high-crystallinity single-walled carbon nanotubes (hc-SWCNTs) have industrial application potential. This study successfully synthesized hc-SWCNTs with few contaminants and achieved their uniform dispersion.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Zhonghao Zhou, Zhifang Liu, Zhi Li, Zhiyong Wang
Summary: This study used density functional theory to investigate the properties of transition metal-encapsulated small fullerenes, revealing that TM@C-n can stabilize small fullerenes, regulate their physicochemical properties, and induce catalytic and magnetic effects, providing clues for the formation mechanism of common fullerenes.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Mechanics
Zhikun Sun, Zhiwei Shi, Zheng Li, Xi Geng, Zongsheng Ren
Summary: The complete flow structure and composition of the flow structure generated by Pulsed Surface Arc Discharge in a Magnetic Field (M-PSAD) are vital for understanding the plasma application mechanism. The experimental results demonstrate that M-PSAD can generate plasma clusters and detonation waves. The thermal motion of charged particles in the plasma cluster is the main cause of the thermal effect of arc discharge. The detonation wave consists of a shock wave, Taylor expansion wave, and two different thickness zones of charged particles. These experimental results provide a profound understanding of the physical mechanism behind plasma application.
Article
Engineering, Aerospace
Zhikun Sun, Zhiwei Shi, Xi Geng, Zheng Li, Qijie Sun
Summary: This paper investigates the dynamic heat and mass transfer process of charged particle clusters generated by Pulsed Surface Arc Discharge (PSAD) actuators. The clusters are composed of charged particles, and the thermal effect is the macroscopic manifestation of their thermal motion. The transfer mode of the plasma cluster changes from forced convection to natural convection, and the Richardson number varies in different stages. A model describing the dynamic heat and mass transfer of pulsed plasma clusters is constructed, and the results show that the clusters mainly conduct mass transfer through low-frequency modes and heat transfer through high-frequency modes.
AEROSPACE SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Applied
A. N. Bocharov, E. A. Mareev, N. A. Popov
Summary: A computational model of high-current pulsed arc discharge in air is proposed and validated for low to moderate current discharges. The model accurately predicts most characteristics of the discharge even for high current amplitudes, with good agreement between simulation results and experimental data. The pinch effect is found to be significant for currents higher than 100 kA.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
Xunxiang Hu, Kurt A. Terrani
Summary: This paper reports the properties of unirradiated bulk yttrium hydride as a function of hydrogen concentration, providing a baseline measurement for further neutron irradiation response studies. It suggests the recommended empirical treatment of the data and discusses other properties that need to be investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Coatings & Films
Weimian Guan, Mingyu Gao, Hao Lv, Jie Yuan, Dejiang Chen, Tao Zhu, Youtong Fang, Jiabin Liu, Hongtao Wang, Zhigong Tang, Wei Yang
Summary: The bi-layered Zr/Cu composite cathode, prepared through laser cladding, shows a 39.0% lower arc ablation rate and improved arc discharge homogeneity compared to the mono-layered Zr/Cu cathode in an air atmosphere. The enhanced performance is attributed to the surface ZrO2 layer, which enhances the service life of the cathode by combining an ablation-resistant surface with a conductive matrix.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Jiri Vyskocil, Pavel Mares, Zdenek Hubicka, Martin Cada, Tomas Mates
Summary: A new hybrid PVD deposition system combining HiPIMS pulsed glow discharge and pulsed cathodic arc discharge has been developed. The researchers successfully controlled the transition from glow discharge to arc discharge by modifying the power supply. The system was used to deposit ta-C thin films with promising results.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Chuanxu Ma, Zhongcan Xiao, Peter Bonnesen, Liangbo Liang, Alexander A. Puretzky, Jingsong Huang, Marek Kolmer, Bobby G. Sumpter, Wenchang Lu, Kunlun Hong, Jerzy Bernholc, An-Ping Li
Summary: This study investigates the cyclodehydrogenation reaction mechanism in the on-surface synthesis of graphene nanoribbons using isotopic labeling. A reaction pathway involving conrotatory electrocyclization and a [1,9]-sigmatropic D shift, followed by H/D eliminations, is identified and substantiated by experiments and simulations. The research not only helps clarify the reaction process in GNR synthesis, but also presents a rational strategy for designing precise hydrogen/deuterium isotope labeling patterns in on-surface reactions.
Article
Physics, Fluids & Plasmas
A. Saifutdinov
Summary: In this study, various modes of direct current discharges in argon at atmospheric pressure were investigated based on a unified model for describing the gas discharge gap and electrodes in 2D geometry. Numerical calculations were conducted to reveal the influence of electrode cooling conditions on the current-voltage characteristic of the discharge, including the transition from normal glow to arc discharge and the occurrence of abnormal glow mode. Different forms of arc discharge, either with diffuse or contracted current spot, were observed depending on the cooling conditions. Low-current mode exhibited current and voltage oscillations during the transition from Townsend to normal glow discharge.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Estefania German, Gao-Lei Hou, Jan Vanbuel, Joost M. Bakker, Julio A. Alonso, Ewald Janssens, Maria J. Lopez
Summary: Metal clusters supported on carbonaceous substrates are studied in this paper for their structures and infrared spectra. The preferred clustering of Rh on the surface of the fullerene is observed, with electron transfer occurring from the metal cluster to the fullerene. Adsorption of Rh-n clusters leads to degeneracy lifting of the most intense C-60 features in the infrared spectra. The experimental and calculated spectra generally agree, except in the presence of D-2-messenger molecules in certain regions.
Article
Chemistry, Physical
A. Allouch, J. Mougenot, A. Michau, S. Prasanna, P. Brault, F. Maurel, K. Hassouni
Summary: This study investigated the mechanisms of carbon sticking reactions to C-36 and C-C-80 fullerenes using molecular dynamics simulations. The results showed the existence of three possible sticking configurations, and while the two potentials gave similar magnitudes for sticking cross-sections, they yielded different results in terms of sticking mechanisms and configurations.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Nadezhda B. Tamm, Maria A. Fritz, Natalia A. Romanova, Alexey A. Goryunkov, Sergey Troyanov
Summary: This study reports the synthesis, isolation, and structure elucidation of a trifluoromethyl derivative of the minor isomer C-84(11)(CF3)(10,12,14). The addition patterns and trifluoromethylation pathways of different isomers of C-84 are discussed. These findings are important for understanding the structure and properties of fullerene.
Article
Chemistry, Multidisciplinary
Nadezhda B. Tamm, Maria A. Fritz, Natalia A. Romanova, Vitaliy Yu. Markov, Alexey A. Goryunkov, Sergey I. Troyanov
Summary: This study focuses on the synthesis and structure elucidation of trifluoromethyl derivatives of the minor isomer C-84(11)(CF3)(14,16,18), discussing the formation of stabilizing substructures on the carbon cage and trifluoromethylation pathways. It also considers the addition of bulky CF3 groups based on DFT calculations and discusses these pathways for five different isomers of C-84.
Article
Engineering, Environmental
Sitao Wang, Xuewen Zhao, Zhijie Liu, Xueling Yang, Bolun Pang, Yuting Gao, Renwu Zhou, Dehui Xu, Jinying Zhang, Tianqi Zhang, Michael G. Kong
Summary: The overuse of antibiotics has caused water contamination, and green and enhanced treatment technologies are needed to limit the spread of antibiotic pollution. In this study, an efficient photocatalysis-self-Fenton system based on violet phosphorus (VP)-Fe3O4 was constructed to achieve significant degradation performance. The combination of VP-Fe3O4 and underwater bubble plasma (UBP) showed a higher NOR degradation rate compared to sole VP-Fe3O4 and UBP. The study also elucidated the synergistic degradation mechanism in the VP-Fe3O4/UBP system.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Xiaohui Ye, Yifan Yang, Ming Qi, Mengzhen Chen, Hao Qiang, Xi Zheng, Mengyue Gu, Xuewen Zhao, Dan Zhao, Jinying Zhang
Summary: Violet phosphorene, the most stable allotrope of phosphorus, was successfully applied as a gas sensing material for the first time. The violet phosphorene was fabricated and exfoliated from bulk violet phosphorus, and then combined with graphene to sense NO and CO gas molecules. The results showed high sensitivity (35.12% with a gage factor of 7 x 104) and high sensing selectivity ratio (1.8). The sensing mechanism was explored through X-ray photoelectron spectroscopy analysis. This work revealed the immense potential of violet phosphorene in the field of gas sensing.
Article
Chemistry, Physical
Ruben Canton-Vitoria, Takato Hotta, Yuri Tanuma, Ioanna K. Sideri, Nikos Tagmatarchis, Chris Ewels, Ryo Kitaura
Summary: We successfully functionalized MoS2 and WS2 with Zn-porphyrin through 1,2-dithiolane addition, creating mixed 0-2 dimensional materials. The localization of porphyrins on the basal plane of TMDs resulted in a new emission band in the NIR region, originating from charge-separated states. The optical response of excitonic species was enhanced, and sensing time-response improved after functionalization, while the stability of WS2 and MoS2 against atmospheric photodegradation was also enhanced.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Yao Zhang, Tao Zhu, Nannan Zhang, Yubin Li, Xiaobo Li, Minglu Yan, Yue Tang, Jinying Zhang, Man Jiang, Hua Xu
Summary: A VP/MoS2 van der Waals heterostructure is constructed to design a high-performance 2D photodetector by utilizing the synergistic effect of the two materials. The VP/MoS2 heterostructure photodetector achieves excellent photoresponse performances with ultrahigh responsivity, high specific detectivity, large external quantum efficiency, and gate tunability. Moreover, the VP/MoS2 heterostructure photodetector indicates superior air stability due to the effective protection of VP by MoS2 encapsulation. This work sheds light on the future study of the fundamental property and optoelectronic device application of VP.
Review
Chemistry, Multidisciplinary
Rui Zhai, Lihui Zhang, Mengyue Gu, Xuewen Zhao, Bo Zhang, Yonghong Cheng, Jinying Zhang
Summary: Effective photocatalytic CO2 reduction is important for addressing energy crisis and global warming. Metal-based semiconductors have been well reviewed, but nonmetal-based semiconductors, especially phosphorus structures, have not been systematically reviewed for CO2 reduction. This paper reviews the progress of phosphorus structures as photocatalysts for CO2 reduction, including different allotropes and doping or ligands.
Article
Chemistry, Multidisciplinary
Xuewen Zhao, Mengyue Gu, Rui Zhai, Yuhao Zhang, Mengting Jin, Yanhao Wang, Jiangfan Li, Yonghong Cheng, Bing Xiao, Jinying Zhang
Summary: Recently confirmed violet phosphorus (VP) has unique photoelectric, mechanical, and photocatalytic properties. By substituting antimony for some phosphorus atoms in VP crystals, the physical and chemical properties are modified, resulting in significantly enhanced photocatalytic hydrogen evolution performance.
Article
Materials Science, Multidisciplinary
Xiaoyang Ma, Han Pan, Tong Yang, Qing Liao, Jinying Zhang, Dechun Li
Summary: The better thermal stability and extremely high deformation resistance of violet phosphorene make it a great potential candidate to be a new dream material better than black phosphorene. Due to the high confinement of 2D materials, violet phosphorene is expected to possess extraordinary optical properties.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Zhenyu Sun, Zhihao Cai, Peng Cheng, Lan Chen, Xuewen Zhao, Jinying Zhang, Kehui Wu, Baojie Feng
Summary: Researchers studied the optical properties of ultrathin violet phosphorus through second harmonic generation, photoluminescence, and optical absorption spectroscopy. They found strong bound exciton emission in violet phosphorus, which was 0.48 eV away from the free exciton emission, among the largest differences observed in 2D materials. Additionally, the bandgaps of violet phosphorus were highly sensitive to the number of layers and external strain, providing convenient approaches for bandgap engineering. The strong bound exciton emission and tunable bandgaps make violet phosphorus a promising material in optoelectronic devices.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Chemistry, Physical
Na Yang, Huchen Yao, Fanqi Bu, Mengyue Gu, Xuewen Zhao, Lei Huang, Chonghan Zhao, Yonghong Cheng, Jinying Zhang
Summary: Hydrolysis of LiAlH4 is a promising way to produce hydrogen at low temperatures, and an anti-icing aqueous solution is necessary. In this study, an optimized solution containing 27.1% KOH and 30.0% ethylene glycol was found to achieve full and controllable hydrolysis kinetics of LiAlH4 at -40 to 0 degrees C. The effects of compactness, mass, and temperature on the hydrolysis were investigated, and it was observed that the reaction followed the shrinking core model controlled by liquid film diffusion.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ruben Canton-Vitoria, Takato Hotta, Mengsong Xue, Shaochun Zhang, Ryo Kitaura
Summary: In this study, a straightforward method has been developed to obtain nanoribbons with controllable widths and lengths by O2 etching of the metallic phase in metallic/semiconducting in-plane heterostructures of monolayer MoS2. The nanoribbons also showed excellent field-effect transistor performance and were used as a template to build heterostructures with other transition metal dichalcogenides. This study offers a simple production method for nanoribbons with wide applications in nanotechnology and chemistry.
Article
Chemistry, Physical
Yuika Saito, Takahiro Kondo, Sora Harada, Ryo Kitaura, Maria Vanessa Balois-Oguchi, Norihiko Hayazawa
Summary: In this study, we used polarization resonance Raman microscopy to investigate the interactions between single-walled carbon nanotubes (SWCNTs) and encapsulated molecules. We focused on C-70 encapsulated in SWCNTs and examined the Raman spectral pattern under different laser polarizations and excitation wavelengths. Our results showed that the resonance Raman process was modulated by a charge transfer contribution between C-70 and SWCNTs, which depended on the incident polarization and excitation wavelength. The intensity of the local electronic field inside a SWCNT was higher for parallel excitation than perpendicular excitation when the nanotubes were bundled.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Yanhao Wang, Mengting Jin, Mengyue Gu, Xuewen Zhao, Jinan Xie, Guodong Meng, Yonghong Cheng, Jinjiang He, Jinying Zhang
Summary: Violet phosphorus, the most stable allotrope, has attracted significant attention. Large violet phosphorus plates with red bronze luster were obtained from molten lead. The crystal structure of violet phosphorus was determined to be monoclinic with the space group P2/n. The exfoliated violet phosphorus plates were used to fabricate a back-gate field-effect transistor with a hole mobility of 2.308 cm2 V-1 s-1 and an absolute responsivity of 130 mA W-1 under a 530 nm laser.
Article
Chemistry, Physical
Xin Wang, Chang Xu, Ziyou Wang, Yan Wang, Xuewen Zhao, Jinying Zhang, Ming Ma, Quansheng Guo, Fuxiang Zhang
Summary: A novel mono-elemental material, violet phosphorus (VP) quantum dots, with tunable lateral size and thickness, were successfully synthesized via liquid-phase exfoliation. The VPQDs exhibit remarkable photocatalytic performance for hydrogen evolution under visible light irradiation.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Xin Wang, Ming Ma, Xuewen Zhao, Peng Jiang, Yan Wang, Jiahong Wang, Jinying Zhang, Fuxiang Zhang
Summary: A VP/BP heterostructure was constructed using a phase engineering strategy, creating a well-matched heterophase interface to improve charge separation efficiency and photocatalytic activity for hydrogen evolution. This study highlights the feasibility of phase engineering and provides an alternative strategy to enhance the performance of photocatalysts.
Article
Chemistry, Multidisciplinary
Ruben Canton-Vitoria, Kotaro Sato, Yashiro Motooka, Shinya Toyokuni, Zheng Liu, Ryo Kitaura
Summary: We made sensors by modifying MoS2 and WS2 surfaces with COVID-19 antibodies and examined their stability, reusability, sensitivity, and selectivity. Antibodies interact strongly with Mo or W sites, resulting in durable devices that remain stable for several days in air or water. The antibodies remain intact even during aggressive cleaning at pH 3, allowing reuse without significant loss of sensitivity. The nanodevice can be used for different patient samples, with a limit of detection of 1 fg ml(-1) at room temperature and a response time of 1 second, showing selectivity against interferences.
