Review
Chemistry, Multidisciplinary
Sejeong Kim
Summary: Two-dimensional materials have been widely used in various scientific research areas and the concept of constructing photonic devices exclusively from 2D materials has emerged. This review introduces photonic devices solely consisting of 2D materials, including photonic waveguides, lenses, and optical cavities. These devices enable the thinnest possible devices due to their high refractive index, and the unique characteristics of 2D materials may provide intriguing applications.
NANOSCALE ADVANCES
(2023)
Article
Engineering, Environmental
K. Harikrishnan, Gajendar Singh, Amisha Kushwaha, Varun Pratap Singh, Umesh Kumar Gaur, Manu Sharma
Summary: The presence of organic pollutants in the environment poses significant health risks, therefore, monitoring and controlling their levels is imperative. In this study, g-C3N4/BN nanocomposites were synthesized and used as a basis for an electrochemical sensor for detecting hazardous hydroquinone. The sensor demonstrated good sensitivity and practicality.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Chiyu Zhang, Jacob Fortner, Peng Wang, Jeffrey A. Fagan, Shuhui Wang, Ming Liu, Shigeo Maruyama, YuHuang Wang
Summary: The study reports the direct growth of BN on chirality enriched carbon nanotubes to form van der Waals heterostructures and investigates the factors affecting the heterostructure formation. The results show that the heterostructures have intriguing physical and chemical properties.
Article
Chemistry, Physical
Eugene B. Chubenko, Nikolai G. Kovalchuk, Ivan Komissarov, Victor E. Borisenko
Summary: We have developed a technology that allows the fabrication of continuous two-dimensional crystallized g-C3N4 layered thin films on glass and silicon substrates. These films possess good crystalline quality and exhibit intense photoluminescence, making them promising for applications in integrated electronics and optoelectronics.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Review
Chemistry, Physical
Junkai Ren, Plinio Innocenzi
Summary: Hexagonal boron nitride (h-BN) is a highly attractive 2D material due to its remarkable properties, and its combination with other components to form heterostructures shows great potential for developing advanced functional devices. High-quality 2D h-BN structures with fewer defects can maximize its intrinsic properties, while controlled introduction of multiple defects in 2D h-BN can create new properties and advanced functions. Engineering of heterojunctions, including interface bonding design, plays a crucial role in developing advanced applications based on h-BN heterostructures in the future.
Article
Physics, Applied
F. T. Vasko
Summary: 2D electrons trapped in vacuum near the atomically thin dielectric (ATD) are studied, showing that the polarizability effect of ATD is weak when N <= 5. Analysis of momentum and energy relaxation rates reveals significant variations in momentum relaxation times across different temperature and concentration ranges.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Ceramics
Shota Daiki, Toshihiro Ishikawa
Summary: This study obtained highly purified and crystallized hexagonal boron nitride powder through a heat treatment process. The use of CaO promoter in carbothermal reduction nitridation prevented boron oxide evaporation and improved the crystallinity of h-BN particles. However, the formation of byproduct or impurity CaB6 occurred at high temperatures.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Chemistry, Physical
Suchit Negi, Alexandra Carvalho, Maxim Trushin, A. H. Castro Neto
Summary: 2D water confined by layered materials can transition into various crystalline phases with control over its structure and flow by using the microscopic electric field of adjacent polar materials. The crystalline phases of 2D water clusters are determined by the edges, polarity, and interlayer distance of hexagonal boron nitride (h-BN) nanoribbons. These findings provide a promising pathway for controlling water structure and flow using polar materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Jiulong Li, Linda M. Guiney, Julia R. Downing, Xiang Wang, Chong Hyun Chang, Jinhong Jiang, Qi Liu, Xiangsheng Liu, Kuo-Ching Mei, Yu-Pei Liao, Tiancong Ma, Huan Meng, Mark C. Hersam, Andre E. Nel, Tian Xia
Summary: 2D boron nitride (BN) and molybdenum disulfide (MoS2) materials have novel chemical, electronic, and optical properties, but recent research has shown potential hazards of MoS2 under certain biological conditions. MoS2 induces dose-dependent cytotoxicity in Kupffer cells (KCs), while the BN derivatives are non-toxic. The toxicity of MoS2 is attributed to nanosheet dissolution and the release of hexavalent Mo, leading to mitochondrial reactive oxygen species generation and apoptosis in KCs. Further, the phagocytosis of MoS2 aggregates triggers a separate response pathway involving lysosomal damage, NLRP3 inflammasome activation, and cytokine production.
Article
Chemistry, Physical
Keng Chen, Huazhang Guo, Jiye Zhang, Liang Wang, Minghong Wu
Summary: This work focuses on the development of a highly efficient photocatalyst for clean hydrogen production. The metal-free 2D/2D boron/g-C3N4 nanosheet heterojunction (B-CN) was designed and synthesized, which showed a hydrogen generation rate 35 times higher than g-C3N4. The tight heterojunction architecture allows for enhanced light absorption, increased carrier concentration, and efficient charge transfer, leading to improved photocatalytic activity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Physics, Applied
Lihua Gao, Xiangfa Zhang, Mingzhi Wang, Faming Gao
Summary: The study found that the Knoop hardness of amber cubic boron nitride single crystals exhibits significant crystal orientation dependence on the {111} plane, with the minimum value appearing about 5 degrees away from ⟨110⟩ directions. Raman spectra measurements of cubic boron nitrides help explain the hardening of samples.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Diksha Choudhary, Ankit Singh, Abhishek Giri, Harish Chandra Prasad, R. K. Sharma, Alka Mishra, Sandeep Singhai, Archana Singh
Summary: A new hybrid adsorbent, Ni(OH)2@hBN, has been developed for the removal of fluoride in groundwater. The adsorption capacity of this material is exceptionally high, surpassing that of common defluoridation adsorbents such as activated alumina and nickel oxide. The addition of functionalized boron nitride increased the surface area and provided hydroxyl group-containing sites for fluoride adsorption.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Atefe Farahani, Masoud Jamshidi, Masumeh Foroutan
Summary: In this study, boron nitride nano sheets (BNNSs) were successfully prepared by exfoliation using mono ethylene glycol (MEG) as an exfoliating agent. The use of MEG resulted in higher yield and thinner nanosheets compared to the use of isopropyl alcohol (IPA)/water mixture. Silicon rubber nanocomposites containing pure and exfoliated BNNSs showed improved thermal and electrical performances. Exfoliated-BNNSs exhibited significantly higher thermal conductivity and electrical volume resistivity compared to pure BNNSs.
MATERIALS & DESIGN
(2023)
Article
Multidisciplinary Sciences
Yaniv Kurman, Raphael Dahan, Hanan Herzig Sheinfux, Kangpeng Wang, Michael Yannai, Yuval Adiv, Ori Reinhardt, Luiz H. G. Tizei, Steffi Y. Woo, Jiahan Li, James H. Edgar, Mathieu Kociak, Frank H. L. Koppens, Ido Kaminer
Summary: Investigating the dynamic phenomena of 2D polaritons in 2D materials requires the use of a ultrafast transmission electron microscope with simultaneous spatial and temporal imaging capabilities, which can reveal unknown coherent optical phenomena such as splitting of multibranch wave packets, wave packet deceleration, and acceleration.
Review
Biochemical Research Methods
Alejandro Garcia-Miranda Ferrari, Samuel J. Rowley-Neale, Craig E. Banks
Summary: This review challenges the misconception that 2D hexagonal boron nitride (2D-hBN) is non-conductive and highlights its potential as a basis for electroanalytical sensing platforms. Recent developments and trends in utilizing 2D-hBN in electrochemistry are summarized, with a focus on future developments of this often overlooked material.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Solene Comby-Dassonneville, Timothee Venot, Alejandro Borroto, Eva Longin, Christelle der Loughian, Benoit ter Ovanessian, Marie-Alix Leroy, Jean-Francois Pierson, Philippe Steyer
Summary: A combinatorial approach was used to identify compositional windows with optimized properties for ZrCuAg thin-film metallic glasses, revealing that antibacterial properties are influenced by the chemical composition, with silver contents higher than 12% exhibiting full bactericidal effects.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Boitumelo J. Matsoso, Clara Garcia-Martinez, Thomas H. Mongwe, Berangere Toury, Jose P. M. Serbena, Catherine Journet
Summary: This study presents the application of BaF2-modified hBN flakes as chemoresistive sensing materials for the detection of acetone and/or ethanol. Different concentrations of BaF2 showed varying effects on enhancing sensing performance, with improved sensing attributed to defects providing more adsorption sites. The structural properties of hBN flakes play a crucial role in achieving selective and sensitive detection of VOCs at room temperature.
Article
Materials Science, Multidisciplinary
Joyce B. Matsoso, Nikolas Antonatos, Pradip Roy Kumar, Cameron Jellett, Vlastimil Mazanek, Catherine Journet, Zdenek Sofer
Summary: This study investigates the influence of heteroatom domains on the volatile organic compound (VOC) detection properties of B/N co-doped graphene oxide nanostructures, showing that the choice of boron and nitrogen sources affects bonding configurations and lattice morphology, resulting in different responses to methanol and ethanol vapours. Co-doping promotes better stability and selectivity, highlighting the significance of B and N configurations for charge carrier transport properties in graphene nanostructures for VOC sensing devices at room temperature.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
A. Pierret, D. Mele, H. Graef, J. Palomo, T. Taniguchi, K. Watanabe, Y. Li, B. Toury, C. Journet, P. Steyer, V Garnier, A. Loiseau, J-M Berroir, E. Bocquillon, G. Feve, C. Voisin, E. Baudin, M. Rosticher, B. Placais
Summary: This study aims to refine the dielectric characterization of hexagonal boron nitride (hBN) in terms of low-field permittivity and high-field strength and conductivity. The results show that hBN has a low-field dielectric constant of around 3.4 and follows the Frenkel-Pool law for current leakage at high-field, with similar dielectric constant and trap energy as standard technologically relevant dielectrics.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Materials Science, Ceramics
Mirna Chaker Bechelany, Vanessa Proust, Abhijeet Lale, Maxime Balestrat, Arnaud Brioude, Christel Gervais, Rafael Kenji Nishihora, Samuel Bernard
Summary: ZrN/Si3N4 nanocomposites with unique nanostructure have been successfully prepared by chemically crosslinking two polysilazanes and subsequent heat treatment. The optical properties of these nanocomposites can be tuned by adjusting their structure.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Camille Maestre, Yangdi Li, Vincent Garnier, Philippe Steyer, Sebastien Roux, Alexandre Plaud, Annick Loiseau, Julien Barjon, Lei Ren, Cedric Robert, Bo Han, Xavier Marie, Catherine Journet, Berangere Toury
Summary: In the field of 2D materials, hexagonal boron nitride (hBN) stands out for its excellent characteristics including high thermal conductivity, low compressibility, and wide band gap. It holds great promise for applications in van der Waals heterostructures. Researchers have developed a method combining polymer derived ceramics (PDC) and pressure-controlled sintering (PCS) to obtain millimeter-scale hBN crystals with high chemical and crystalline quality. Exfoliated hBN crystals, known as boron nitride nanosheets (BNNSs), were used to encapsulate transition metal dichalcogenides (TMDs) in van der Waals heterostructures. Optical spectroscopy was used to test the quality and potential opto-electronic applications of these BNNSs.
Article
Materials Science, Ceramics
Omid Akhlaghi, Erik Camposilvan, Zahra Goharibajestani, Sirous Khabbaz Abkenar, Cleva W. Ow-Yang, Yves Jorand, Laurent Gremillard, Vincent Garnier, Jerome Chevalier
Summary: This work describes the development of transparent high-strength Yttria-Stabilized Zirconia (YSZ) ceramics with ultra-fine grain size. Utilizing conventional pressure-less densification, full densification and excellent light transmission were achieved. The resulting ceramics also exhibited high biaxial strength attributed to the refined microstructure and martensitic phase transformation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Inorganic & Nuclear
Ben Gikonyo, Fangbing Liu, Siddhartha De, Catherine Journet, Catherine Marichy, Alexandra Fateeva
Summary: The solventless synthesis and processing of Metal Organic Frameworks (MOFs) are crucial for their application in practical technologies. This study demonstrates the vapor phase synthesis of MOF thin films, which shows suitability and adaptability for different substrates, as well as the ability to achieve crystalline growth.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Ceramics
Mathilde Maillard, Jerome Chevalier, Laurent Gremillard, Guilhem P. Baeza, Edwin-Joffrey Courtial, Sarah Marion, Vincent Garnier
Summary: Robocasting, also known as Direct Ink Writing, is a method for creating dense ceramic parts using micro-extrusion of ceramic pastes through controlled 3D positioning of needles. The quality of the printed parts is influenced by the rheological properties of the ceramic pastes, printing parameters, and thermal post processes. This study characterizes the rheological properties of alumina pastes, establishes correlations between rheological properties and printing conditions, and evaluates extrudability, shape fidelity, and mechanical performance of the final parts. The paper introduces an extended definition of printability that considers functional requirements of the final parts in addition to processability criteria.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Cynthia Cibaka-Ndaya, Nicolas Javahiraly, Lucian Roiban, Thierry Epicier, Nacer Boubiche, Sabastien Valette, Antoine Saury, Arnaud Brioude
Summary: A multistep synthesis method was used to prepare nanoscale core@shell spherical heterostructures for H2 optical detection. These nanoheterostructures consist of gold cores, silica shells, and a thin layer of spherical palladium nanoparticles. The samples were characterized by transmission electron microscopy, and the three-dimensional core@shell configuration was confirmed by electron tomography. The optical properties of the nanostructures were analyzed, and their potential for H2 detection was evaluated.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fernand Chassagneux, Nelly Couzon, Christophe Place, Mathieu Maillard, Arnaud Brioude, Laurence Bois
Summary: The electrochemical behavior of silver nanoparticles in mesoporous oxide electrodes was investigated. The results showed the importance of Ag+ ion retention by TiO2 films. Two anodic peaks in the voltammetric curves were observed, which could be explained by the presence of two distinct populations of silver nanoparticles with different size distributions in the film.
Editorial Material
Chemistry, Multidisciplinary
Catherine Journet
Article
Chemistry, Physical
Yujiao Zhou, Gilles Ledoux, Laurence Bois, Sylvie Descartes, Nathalie Bouscharain, Fernand Chassagneux, Matteo Martini, Yamaldi Midiladji Bakary, Catherine Journet, David Philippon
Summary: Non-contact temperature measurement at the nanoscale by photoluminescence using a nano-sensor in a confined fluid has been achieved in this study. Upconversion lanthanide-doped nanoparticles were utilized as a self-referenced nanosensor for ratiometric thermometry. The synthesized Gadolinium orthovanadate (GdVO4) nanoparticles doped with Yb3+ and Er3+ were dispersed in an ester-based fluid. The results showed that the dispersed NP suspension allowed luminescence intensity ratio (LIR) thermometry up to 473 K with a relative sensitivity of 1.17% K-1 using a NIR laser.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
A. Schmitt, D. Mele, M. Rosticher, T. Taniguchi, K. Watanabe, C. Maestre, C. Journet, V. Garnier, G. Feve, J. M. Berroir, C. Voisin, B. Placais, E. Baudin
Review
Materials Science, Multidisciplinary
Camille Maestre, Berangere Toury, Philippe Steyer, Vincent Garnier, Catherine Journet
Summary: Hexagonal boron nitride (hBN) is crucial in 2D material-based technologies, with a focus on high crystal quality, purity, and defect density for new optoelectronic applications. Self-standing hBN crystals offer high-quality nanosheets, and their synthesis process is key to ensuring crystal size, purity, and defects are well-controlled and understood.
JOURNAL OF PHYSICS-MATERIALS
(2021)
