Article
Chemistry, Multidisciplinary
Vasu Prasad Prasadam, Ali Margot Huerta Flores, Naoufal Bahlawane
Summary: The porous composite coatings consisting of CNT-TiO2 core-shell structures show superior performance in photo-electrochemical water splitting reactions, with a photocurrent improvement factor of over 400%. This enhancement is attributed to the increased interface area with the electrolyte and fast withdrawal of electrons, while the strong absorption properties of CNT severely limit light penetration depth.
Article
Chemistry, Inorganic & Nuclear
Shiliang Wang, Daitao Kuang, Lianwen Deng, Weijie Duan, Gang Xiao, Xiaogang Sun, Chuansheng Chen
Summary: This study investigates the microwave absorption properties of Cu-C core-shell nanoparticles and their derivatives. It is found that the C shells significantly improve the polarization loss, while the Cu cores have negligible influences on the conduction loss. The interface between C shells and Cu cores tunes the conduction loss and polarization loss to achieve optimal microwave absorption performances.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Yu-Sheng Tsai, Jyun-Rong Chen, Chang-Hsueh Lee, Chih-Chen Kuo, Ya-Hsuan Lin, Chun-Chieh Wang, Yu-Cheng Chang, YewChung Sermon Wu, Hsiang Chen
Summary: In this study, different types of ZnO-based nanocomposites were fabricated and characterized. The etching of ZnO nanorods increased the surface area and defect concentration, while sulfurization of the ZnO/ZnS nanotubes reduced defects and improved surface roughness. The results indicate that ZnO and ZnO/ZnS nanotubes hold promise for sensing device applications.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
A. Shumskaya, I Korolkov, A. Rogachev, Zh Ignatovich, A. Kozlovskiy, M. Zdorovets, M. Anisovich, M. Bashouti, A. Shalabny, R. Busool, S. Khubezhov, D. Yakimchuk, V Bundyukova, L. Panina, E. Kaniukov
Summary: Ni@Au core-shell nanotubes were synthesized using a two-stage method, with comprehensive studies conducted on their structure, morphology, chemical composition, surface condition, and magnetic properties. The cytotoxicity of Ni and Ni@Au nanotubes was evaluated, showing a significant reduction when coated with an Au layer. The gold layer had a granular structure with some agglomerations, resulting in surface irregularities beneficial for SERS applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Shuya Li, Hanjie Lin, Chun Chu, Chandler Martin, Walker Macswain, Robert W. Meulenberg, John M. Franck, Arindam Chakraborty, Weiwei Zheng
Summary: A simple method has been developed to fabricate lead-free/core-shell nanocrystals with enhanced environmental stability and improved photoluminescence quantum yields. The resulting nanocrystals exhibit tunable photoluminescence colors due to B-site ion diffusion at the core/shell interface, which further optimizes the optical properties.
Article
Chemistry, Multidisciplinary
Manami Goto, Ichiro Yamane, Shoki Arasawa, Takashi Yanase, Seiya Yokokura, Taro Nagahama, Yu-lun Chueh, Yongjun Shin, Yongmin Kim, Toshihiro Shimada
Summary: Different types of MoO2 and MoS2 nanostructures were successfully synthesized through chemical vapor deposition and sulfurization, with the involvement of MoOx suboxide and controllable thickness of MoS2 layers.
Article
Chemistry, Multidisciplinary
Xue Bai, Finn Purcell-Milton, Yurii K. Gun'ko
Summary: Cu-Based quantum dots are being explored as a potential replacement for toxic Cd- or Pb-based QDs, with studies focusing on the impact of different reaction conditions on the resulting morphologies and optical properties. By carefully controlling the ZnS shell deposition, researchers have optimized the synthesis of CIZS/ZnS/ZnS QDs and produced highly fluorescent core/shell/shell heterostructured QDs with high PLQYs. Additionally, the successful creation of giant ZnS shell QDs opens up possibilities for further development in this area.
Article
Chemistry, Analytical
Yuncheng Ye, Xin Guo, Yongjun Ma, Qi Zhao, Yan Sui, Jia Song, Weijing Ma, Pengxue Zhang, Chuanli Qin
Summary: Transition metal sulfides, such as NiMoS, have shown potential as electrode materials for supercapacitors. By synthesizing PNTs@NiMoS core-shell composites, researchers were able to significantly improve the specific capacitance and energy density of supercapacitors, resulting in a high-performance asymmetric supercapacitor with superior cycling stability.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Changcun Li, Xiaoqi Lan, Peipei Liu, Jingkun Xu, Qinglin Jiang, Congcong Liu, Cheng Liu, Fengxing Jiang
Summary: Interface control is regarded as an effective means to optimize the thermoelectric performance of inorganic/organic composites. This study proposes a core/hybrid-shell strategy to tune the energy barrier of the inorganic/organic core/shell nanowire interface, resulting in substantial improvement in power factor and reduction in thermal conductivity. The prepared core/hybrid-shell composites demonstrate good air-stability and flexibility, and the TE devices based on them yield excellent output properties, showing great potential for low-power wearable electronics.
Article
Materials Science, Biomaterials
Muling Zeng, Ying Shu, Marina Parra-Robert, Diti Desai, Hongzhi Zhou, Qihong Li, Zhifeng Rong, Didem Sen Karaman, Huiling Yang, Jingbao Peng, Guillermo Fernandez-Varo, Wladimiro Jimenez, Gregori Casals, Victor Puntes, Jessica M. Rosenholm, Eudald Casals
Summary: The study presents a simple and general method to grow a mesoporous silica shell onto hydrophilic nanoparticle cores, allowing for the embedding of single, double, and triple inorganic nanoparticles within the same shell with size-control of the obtained nanocomposites. This sustainable and cost-effective fabrication process can be conducted entirely at room temperature, atmospheric conditions, and in aqueous solvent, enabling easy preparation of multicomponent nanocomposite libraries with standard laboratory glassware and simple benchtop chemistry.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Anna Stavitskaya, Maria Rubtsova, Aleksandr Glotov, Vladimir Vinokurov, Anna Vutolkina, Rawil Fakhrullin, Yuri Lvov
Summary: This paper discusses a nanoarchitectural approach to designing functional nanomaterials using natural aluminosilicate nanotubes and their catalysis, focusing on hybrid core-shell systems and nanotube templates for silica and zeolite preparation. These systems have unique properties such as biocompatibility, environmental safety, and scalability for industrial applications. The combination of halloysite nanotubes with mesoporous MCM-41 silica enhances catalysis properties and allows for various applications including bioremediation, antimicrobial protection, wound healing, and human hair coloring.
NANOSCALE ADVANCES
(2022)
Article
Engineering, Biomedical
Han-Sem Kim, Jung-Hwan Lee, Nandin Mandakhbayar, Guang-Zhen Jin, Sung-Jin Kim, Ji-Young Yoon, Seung Bin Jo, Jeong-Hui Park, Rajendra K. Singh, Jun-Hyeog Jang, Ueon Sang Shin, Jonathan C. Knowles, Hae-Won Kim
Summary: The unique-structured nanohybrids formed through self-assembly of Chit@IOC nanounits exhibit high resilience, controlled delivery of multiple therapeutic molecules, and cellular activation. These nanohybrids can accelerate cellular responses, promote new bone formation, and are considered promising 3D tissue regenerative platforms in biomedical applications.
Review
Pharmacology & Pharmacy
Gauta Gold Matlou, Heidi Abrahamse
Summary: Hybrid inorganic-organic core-shell nanoparticles play a crucial role as nanodrug carriers in targeted photodynamic therapy, with their synthesis methods, characterization techniques, and applications extensively discussed. These nanodrug systems with high loading capacity for therapeutic agents are able to enhance cell death pathways and mechanisms through specific targeting strategies, improving the efficacy in cancer treatment.
Article
Polymer Science
Yannik Olszowy, Janick Wesselmann, Shenja Fabienne Over, Florian Paetzold, Ralf Weberskirch
Summary: This study investigated core crosslinked micelles based on poly(2-ethyl-2-oxazoline)-block-poly(n-butyl acrylate-co-d,l-homocysteine thiolactone acrylamide) by employing different di- and triamines and nucleophilic ring-opening reaction. The quantity of crosslinked micelle and free block copolymer was quantified by size exclusion chromatography (SEC), and the crosslinking conditions were optimized. Subsequently, micelles crosslinked with cystamine exhibited degradation times of 1.5 h to 5 h in the presence of dithiothreitol (DTT), depending on the composition of the hydrophobic core.
Review
Chemistry, Applied
Wei Wang, Lei He, Qunxing Luo, Linyang Wang, Jing Wang, Huiyong Chen, Zongcheng Miao, Qiuxiang Yao, Ming Sun
Summary: Research on the synthesis of zeolite molecular sieves focuses on manipulating their properties by adjusting particle size, composition, and morphology. The core and shell concept particles, which integrate multiple functions into a single shape, have been extensively studied. This article presents novel design strategies for zeolite-related core and shell concept particles and their application in conventional thermal catalysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sirshendu Ghosh, Sunil R. Kadam, ShayLee Kolatkar, Alevtina Neyman, Chanderpratap Singh, Andrey N. Enyashin, Ronen Bar-Ziv, Maya Bar-Sadan
Summary: The research shows that Ni12P5 is a promising bifunctional electrocatalyst, with matching crystallographic structure to γ-NiOOH. Doping with tungsten reduces the energy barrier for water dissociation, increases the electrochemical surface area, and exhibits good water splitting performance at 1.73V voltage.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
N. S. Kozhevnikova, M. A. Melkozerova, A. N. Enyashin, A. P. Tyutyunnik, L. A. Pasechnik, I. Baklanova, A. Yu Suntsov, A. A. Yushkov, L. Yu Buldakova, M. Yu Yanchenko
Summary: Ball-like ZnS microparticles assembled from nanoparticles were synthesized using thiourea, showing multiple imperfections in the lattice and a Janus morphology. Molecular dynamics simulations confirmed the presence of grain boundaries in individual nanoparticles. The sedimented ZnS particles exhibited enhanced photocatalytic activity under visible light without altering the band gap or doping of the lattice.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Physical
D. Pukazhselvan, Ihsan Caha, Suresh Kumar Jakka, Vanessa C. D. Graca, Laura I. V. Holz, M. J. Soares, Andrei V. Kovalevsky, Francis Leonard Deepak, Duncan Paul Fagg
Summary: This study provides insights into the active catalytic species in ceria additive loaded hydrogen storage system, MgH2, through mechanical milling and cycling tests. In-situ X-ray diffraction and Raman spectroscopy studies confirm the interaction between MgH2 and CeO2, with evidence of reduced cerium oxides throughout the interactions. The CeHx/CeOx interfaces play a key role in suppressing the formation of MgO rock salt.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Michael K. Abney, Mokshin Suri, Tushti Shah, Francis Leonard Deepak, Brian A. Korgel
Summary: Light induces a slow, reversible enhancement in photoluminescence lifetime and intensity in films of perovskite-phase CsPbI3 nanocrystals. The enhancement can be further increased by placing the films under vacuum or nitrogen.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Energy & Fuels
Kevin Oliveira, Jennifer P. Teixeira, Wei-Chao Chen, Jackson Lontchi Jioleo, Antonio J. N. Oliveira, Ihsan Caha, Leonard Deepak Francis, Denis Flandre, Marika Edoff, Paulo A. Fernandes, Pedro M. P. Salome
Summary: In this study, SiO$_x$ passivation based substrates were developed and integrated into ultrathin Cu(In,Ga)Se$_2$ (CIGS) solar cells to investigate the impact of SiO$_x$ layer thickness on the device performance. Experimental study and optical/electrical simulations were conducted to decouple the optical and electronic gains of the SiO$_x$ layer, allowing for a detailed analysis of its effect on the CIGS solar cell performance. The results showed that an increase in passivation layer thickness led to a rise in parasitic losses, indicating the importance of finding a balance between beneficial passivation and optical effects with harmful architectural constraints to achieve optimal solar cell performance.
IEEE JOURNAL OF PHOTOVOLTAICS
(2022)
Article
Nanoscience & Nanotechnology
Bibhudatta Malik, Hari Krishna Sadhanala, Rong Sun, Francis Leonard Deepak, Aharon Gedanken, Gilbert Daniel Nessim
Summary: Developing high-performance non-noble metal electrocatalysts for alkaline oxygen evolution reaction (OER) is crucial. In this study, a two-step synthesis method was used to prepare a heterojunction catalyst consisting of Co3O4 core and CoP shell, which showed excellent catalytic performance and fast charge transfer in alkaline medium.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Avraham Twitto, Chen Stern, Michal Poplinger, Ilana Perelshtein, Sabyasachi Saha, Akash Jain, Kristie J. Koski, Francis Leonard Deepak, Ashwin Ramasubramaniam, Doron Naveh
Summary: Metal-semiconductor interfaces play a crucial role in modern electronics by enabling the formation of atomically thin metals with rich optical and optoelectronic phenomena. A study on the interface formed by the insertion of tin atomic layers between layers of molybdenum disulfide reveals the emergence of gap states and plasmonic features in the visible to mid-infrared range, suggesting the occurrence of hot-carrier generation and internal photoemission.
Article
Materials Science, Ceramics
Marina A. Melkozerova, Tatyana Dyachkova, Alexander P. Tyutyunnik, Andrey N. Enyashin, Alexander Yu. Chufarov, Yana Baklanova, Vladimir G. Zubkov
Summary: Two new high-pressure modifications of sodium yttrium germanate NaYGeO4 have been studied, with reversible pressure-induced phase transitions from olivine-type NaYGeO4 to new phases observed. A high-pressure polymorph of NaYGeO4 with NaNdSiO4 crystal structure was formed at 800 degrees C starting from 6 GPa, and another new high-pressure modification of NaYGeO4 with NaSmSiO4 crystal structure was found in small amount. In addition, a yet undescribed polymorph of Y2Ge2O7 with pyrochlore-type structure was isolated at 8 GPa and 800 degrees C.
CERAMICS INTERNATIONAL
(2023)
Review
Chemistry, Multidisciplinary
Junjie Li, Francis Leonard Deepak
Summary: This review summarizes the in situ studies on crystal nucleation and growth, with a particular focus on the latest research progress since 2016. The nonclassical mechanisms and various material properties have significant effects on the formation and growth of crystals.
Article
Chemistry, Multidisciplinary
Wenjie Wang, Rong Sun, Wei Shen, Zhiyan Jia, Francis Leonard Deepak, Yujie Zhang, Zhongchang Wang
Summary: We investigated the air-sensitivity, atomic structure, and magnetic anisotropy of VI3 single crystals. Our results showed that VI3 nanocrystals have a large M-R/M-S ratio of about 0.75 and a uniaxial anisotropic constant of approximately 10(5) erg cc(-1) below the Curie temperature. Moreover, density functional theory calculations demonstrated that both monolayer and bulk VI3 exhibit ferromagnetic insulating properties, with the magnetic moment primarily originating from the d orbital of the V atom. These findings provide a feasible approach for fabricating TEM specimens of air-sensitive layered materials and enhance our understanding of the layered ferromagnetic VI3.
Article
Chemistry, Physical
Andrei Krasilin, Maksim Khalisov, Ekaterina Khrapova, Valery Ugolkov, Andrey Enyashin, Alexander Ankudinov
Summary: This study investigates the evolution of mechanical properties of synthetic phyllosilicate nanoscrolls after a series of heat treatments. It is found that the Young's modulus and the contribution of shear deformation to the mechanical behavior of the nanoscrolls can be controlled through heat treatment. This is due to the heat-induced formation of covalent bonds between adjacent layers, complicating the shear deformation.
Article
Materials Science, Multidisciplinary
N. S. Kozhevnikova, L. N. Maskaeva, A. N. Enyashin, A. A. Uritskaya, A. V. Pozdin, V. I. Voronin, I. O. Selyanin, E. V. Mostovshchikova, V. F. Markov
Summary: Pb1+хS thin films with a thickness of 190-360 nm were synthesized on glass substrates using different thioamides as sulfur precursors. The films exhibited polycrystalline structure and n-type conductivity. The sulfur origin was found to affect the crystalline structure, morphology, and formation mechanism of the Pb1+хS films. The excess of lead was correlated with the optical band gap, where a greater excess led to a wider band gap. Fractal analysis suggested a cluster-by-cluster association model for the film growth.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Olga A. Lipina, Ludmila L. Surat, Alexander Yu. Chufarov, Inna V. Baklanova, Andrey N. Enyashin, Marina A. Melkozerova, Alexander P. Tyutyunnik, Vladimir G. Zubkov
Summary: A series of BaRE6(Ge2O7)(2)(Ge3O10) (RE = Tm, Yb, Lu) germanates and activated phases BaYb6(Ge2O7)(2)(Ge3O10):xTm(3+) and BaLu6(Ge2O7)(2)(Ge3O10):12yYb(3+),yTm(3+) were synthesized by solid-state reaction. X-ray powder diffraction analysis showed that the compounds crystallized in the monoclinic system. The compounds have potential applications in creating efficient lanthanide ion activated phosphors.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Liliya A. Pasechnik, Alena O. Peshehonova, Olga A. Lipina, Irina S. Medyankina, Andrey N. Enyashin, Alexander Yu Chufarov, Alexander P. Tyutyunnik
Summary: The crystal structure and properties of (NH4)(3)Sc(SO4)(3):0.005Eu(3+) phosphor have been studied. The research revealed a reverse phase transition at a temperature of 350-355 K and compound decomposition only above 573 K. Under the excitation of the light source, the compound exhibited luminescence corresponding to the characteristic transitions of Eu3+ ions.
Article
Chemistry, Multidisciplinary
Adriano Santos Silva, Jose Luis Diaz de Tuesta, Thais Sayuri Berberich, Simone Delezuk Inglez, Ana Raquel Bertao, Ihsan Caha, Francis Leonard Deepak, Manuel Banobre-Lopez, Helder Teixeira Gomes
Summary: Magnetic nanoparticles have been widely used in various fields such as environmental and biomedical applications. The ability to design nanoparticles with different functionalities and use magnetic fields for targeted delivery has further advanced their biomedical applications. The development of multi-core shell magnetic nanoparticles as drug carriers for cancer treatment has gained increasing attention. However, the synthesis of nanoparticles with high colloidal stability, triggered drug release, and good biocompatibility remains a challenge.