Article
Chemistry, Multidisciplinary
Iuliia Dudko, Thomas Dursap, Anne D. Lamirand, Claude Botella, Philippe Regreny, Alexandre Danescu, Solene Brottet, Matthieu Bugnet, Sumeet Walia, Nicolas Chauvin, Jose Penuelas
Summary: This study demonstrates the growth of hexagonal Ge on self-assisted GaAs nanowires using molecular beam epitaxy without the use of gold catalyst. The hexagonal Ge maintains the crystal phase of the core, which is a significant finding for future development of photonic technologies.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Suman Bera, Souvik Banerjee, Rajdeep Das, Narayan Pradhan
Summary: Two-dimensional CsPbBr3 platelet nanocrystals with bright high energy emission and self-assembly properties have been widely studied. This study reports the formation of multijunction and hexagonal single crystalline 2D discs of CsPbBr3 with different orientations of their vertical axes [100]. The crystal nature of the parent material and temperature-dependent rate of Pb(II) insertions determine the orientation and structure of these nanostructures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Chemical
Xiaoping Wang, Yanling Liu, Kaiming Fan, Peng Cheng, Shengji Xia
Summary: Introducing nanomaterials into the polyamide layer of TFC membranes enhances permeability without sacrificing selectivity. In this study, novel TFN membranes were prepared by varying the deposition density of hierarchical flower-like structured MoS2. These membranes showed increased effective filtration area and reduced mass transfer resistance. They also exhibited looser polyamide layers with higher hydrophilicity and negative surface charges compared to control TFC membranes. The optimal TFN membrane achieved excellent separation performance and structure stability, making it suitable for water/wastewater treatment.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Hiroshi Takashima, Yoshiyuki Inaguma, Masayoshi Nagao, Katsuhisa Murakami
Summary: We successfully obtained BaSnO3 perovskite thin films with remarkable near-infrared luminescence by van der Waals growth. The films were grown on quartz glass substrates using hexagonal boron nitride as the seed layer, and their crystallinity was confirmed by X-ray diffraction and transmission electron microscopy. The grown film exhibited a broad near-infrared emission peak centered at 920 nm. The transparent BaSnO3 film, with high transparency and remarkable near-infrared emission, obtained through van der Waals-type growth, can be applied in wavelength conversion devices to improve the efficiency of Si single-crystal solar cells. The hexagonal boron nitride seed layer is an effective method for high-quality crystal growth of perovskite-type oxides with various functionalities.
Article
Chemistry, Multidisciplinary
Yiwei Zhang, Peng Zhang, Tengfei Xu, Xingguo Wang, Huaning Jiang, Yongji Gong
Summary: Researchers reported a controllable synthesis method for ultrathin two-dimensional TMDCs nanosheets and found that H2S played an important role in controlling their morphology. With the assistance of H2S, the growth of MS2 exhibited thinner thickness and lower nucleation density, which was beneficial for device applications.
CHINESE CHEMICAL LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Yasemin Pepe, Serife Akkoyun, Bedirhan Bozkurt, Ahmet Karatay, Aytunc Ates, Ayhan Elmali
Summary: Polyvinylpyrrolidone/hexagonal boron nitride (PVP/hBN) composite nanofibers were produced by electrospinning at different concentrations of hBN to investigate their effects on nonlinear absorption and optical limiting behavior. The addition of hBN led to a decrease in the diameter of the nanofibers and an increase in defect states. The composite nanofibers exhibited positive nonlinear absorption signals and showed a more pronounced behavior at 1064 nm.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Electrochemistry
Sarita Yadav, Aditya Sharma Ghrera, Ambika Devi, Abhimanyu Rana
Summary: The fabrication of high-performance supercapacitors involves selecting suitable electrode materials, optimizing morphology, and using an efficient synthesis approach. This study utilizes a integrated synthesis approach to improve the electrochemical stability of nickel cobaltite (NiCo2O4). The resulting hierarchical flower-like NiCo2O4@TiN nanosheets grown on nickel foam exhibit high specific capacity, excellent rate capability, and cycling stability, making them suitable for the fabrication of supercapacitor devices.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
H. Ganesha, S. Veeresh, Y. S. Nagaraju, H. Devendrappa
Summary: In this work, flower-like CPANI-MoS2 nanosheets were synthesized through in situ polymerization and a hydrothermal method. The composite was analyzed for structural modification and chemical changes, and showed great potential for electrochemical detection, especially for the detection of hydrazine with wide linear range, low detection limit, and high sensitivity.
Article
Chemistry, Multidisciplinary
Yikai Liao, Sang Ho Shin, Yuhao Jin, Qi Jie Wang, Munho Kim
Summary: The study investigates the feasibility of using TiN and Ni as CMOS-compatible catalysts in Ge MacEtch, showing the formation of inverted pyramid and v-groove Ge microstructures with excellent IR antireflection performance. The experimental results demonstrate good stability and similar hole injection efficiency of TiN and Ni catalysts during the etching process on Ge.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
Yexin Huang, Yuexiao Pan, Shiting Guo, Chengdong Peng, Hongzhou Lian, Jun Lin
Summary: In this study, Mn2+-doped ligand-free CsCdCl3 perovskite crystals were prepared by a hydrothermal method, and a redshift of emission spectra was achieved by adjusting the concentration of Mn2+. Increasing the concentration of Mn2+ resulted in a decrease of PL intensity. The crystals could be excited to emit light by UV and blue excitation bands, making them suitable for use in white light-emitting diodes.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Kyoung-Jin Jeong, Yohan Lee, Thanh-Nam Huynh, Hayk Nersisyan, Hoyoung Suh, JongHyeon Lee
Summary: An improved synthesis method for TiC nanocubes with high catalytic activity has been investigated. TiC nanocubes with exposed {100} facets were successfully grown by combusting reactive mixtures in argon, and the formation mechanism was revealed through density functional theory modeling and surface energy analysis.
Article
Materials Science, Multidisciplinary
Leonid Fedorenko, Volodymyr Litovchenko, Vadym Naumov, Dmytro Korbutyak, Volodymyr Yukhymchuk, Olexander Gudymenko, Olexander Dubikovskyi, Hidenori Mimura, Arturs Medvids
Summary: A comparative analysis was conducted on the features of UV-stimulated emission of various disordered active materials based on ZnO crystallites for a random laser. Among the studied materials, PNMC ZnO powder was found to be the most suitable for creating a random laser with incoherent feedback at room temperature. The dominant factor of UV stimulated emission in PNMC ZnO powder is radiation transitions under exciton-exciton scattering conditions. The possible mechanisms of this random emission were discussed and the average optical gain coefficient at lambda = 387 nm was estimated.
Article
Chemistry, Physical
Lesheng Li, Marcos Calegari F. Andrade, Roberto Car, Annabella Selloni, Emily A. Carter
Summary: In this study, the influence of different TiS2 surface terminations on its interface with water was revealed through deep potential molecular dynamics simulations. Zigzag-L was identified as the only interface that favors water dissociation thermodynamically and kinetically, with the coexistence of four-fold-coordinated Ti and one-fold-coordinated S atoms on the surface playing a crucial role in proton transfer. This work provides new insights for the future design and optimization of TiS2-based CDI devices for water desalination.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Mechanical
Munish Kumar Gupta, P. Nieslony, Murat Sarikaya, Mehmet Erdi Korkmaz, Mustafa Kuntog, G. M. Krolczyk, Muhammad Jamil
Summary: Hybrid lubri-cooling is an effective technique that provides synergistic cooling and lubrication effect in the cutting of titanium alloys, reducing tool wear and chemical elements adhesion. The combination of LN2 and MQL resulted in the least tool wear and severe wear on the cutting edge.
TRIBOLOGY INTERNATIONAL
(2022)
