Nanomaterials

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Synthesis of Si, N co-Doped Nano-Sized TiO2 with High Thermal Stability and Photocatalytic Activity by Mechanochemical Method
Nanomaterials - Tập 8 Số 5 - Trang 294
Peisan Wang, Chunxia Qi, Pengchao Wen, Luyuan Hao, Xin Xu, Simeon Agathopoulos
Τhe photocatalytic activity in the range of visible light wavelengths and the thermal stability of the structure were significantly enhanced in Si, N co-doped nano-sized TiO2, and synthesized through high-energy mechanical milling of TiO2 and SiO2 powders, which was followed by calcination at 600 °C in an ammonia atmosphere. High-energy mechanical milling had a pronounced effect on the mix...... hiện toàn bộ
SiO2/ZnO Composite Hollow Sub-Micron Fibers: Fabrication from Facile Single Capillary Electrospinning and Their Photoluminescence Properties
Nanomaterials - Tập 7 Số 3 - Trang 53
Guanying Song, Zhenjiang Li, Kaihua Li, Lina Zhang, Alan Meng
In this work, SiO2/ZnO composite hollow sub-micron fibers were fabricated by a facile single capillary electrospinning technique followed by calcination, using tetraethyl orthosilicate (TEOS), polyvinylpyrrolidone (PVP) and ZnO nanoparticles as raw materials. The characterization results of the scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (X...... hiện toàn bộ
Fundamentals to Apply Magnetic Nanoparticles for Hyperthermia Therapy
Nanomaterials - Tập 11 Số 5 - Trang 1203
Hira Fatima, Tawatchai Charinpanitkul, Kyo‐Seon Kim
The activation of magnetic nanoparticles in hyperthermia treatment by an external alternating magnetic field is a promising technique for targeted cancer therapy. The external alternating magnetic field generates heat in the tumor area, which is utilized to kill cancerous cells. Depending on the tumor type and site to be targeted, various types of magnetic nanoparticles, with variable coat...... hiện toàn bộ
Hierarchical Doped Gelatin-Derived Carbon Aerogels: Three Levels of Porosity for Advanced Supercapacitors
Nanomaterials - Tập 10 Số 6 - Trang 1178
Ayshuwarya Kandasamy, Tamilselvi Ramasamy, Ayesha Samrin., N. Padmanathan, M. Ramesh, Olha Bazaka, Igor Levchenko, Kateryna Bazaka, M. Mandhakini
Nitrogen-doped graphene-based aerogels with three levels of hierarchically organized pores were prepared via a simple environmentally friendly process, and successfully tested in supercapacitor applications. Mesopores and macropores were formed during the aerogel preparation followed by carbonization and its chemical activation by potassium hydroxide (KOH). These mesopores and macropores c...... hiện toàn bộ
Efficient Photoelectrochemical Water Splitting by Tailoring MoS2/CoTe Heterojunction in a Photoelectrochemical Cell
Nanomaterials - Tập 10 Số 12 - Trang 2341
Effat Sitara, Habib Nasir, Asad Mumtaz, Muhammad Fahad Ehsan, Manzar Sohail, Sadia Iram, Syeda Aqsa Batool Bukhari
Solar energy conversion through photoelectrochemical water splitting (PEC) is an upcoming promising technique. MoS2/CoTe heterostructures were successfully prepared and utilized for PEC studies. MoS2 and CoTe were prepared by a hydrothermal method which were then ultrasonicated with wt. % ratios of 1:3, 1:1 and 3:1 to prepare MoS2/CoTe (1:3), MoS2/CoTe (1:1) and MoS2/CoTe (3:1) heterostruc...... hiện toàn bộ
Low-Power Graphene/ZnO Schottky UV Photodiodes with Enhanced Lateral Schottky Barrier Homogeneity
Nanomaterials - Tập 9 Số 5 - Trang 799
Youngmin Lee, Deuk Young Kim, Sejoon Lee
The low-power, high-performance graphene/ZnO Schottky photodiodes were demonstrated through the direct sputter-growth of ZnO onto the thermally-cleaned graphene/SiO2/Si substrate at room temperature. Prior to the growth of ZnO, a thermal treatment of the graphene surface was performed at 280 °C for 10 min in a vacuum to desorb chemical residues that may serve as trap sites at the interface...... hiện toàn bộ
Polypropylene Nanocomposite Filled with Spinel Ferrite NiFe2O4 Nanoparticles and In-Situ Thermally-Reduced Graphene Oxide for Electromagnetic Interference Shielding Application
Nanomaterials - Tập 9 Số 4 - Trang 621
Raghvendra Singh Yadav, Ivo Kuřitka, Jarmila Vilčáková, Michal Machovský, David Škoda, Pavel Urbánek, Milan Masař, Marek Gořalík, Michal Urbánek, Lukáš Kalina, Jaromír Havlica
Herein, we presented electromagnetic interference shielding characteristics of NiFe2O4 nanoparticles—in-situ thermally-reduced graphene oxide (RGO)—polypropylene nanocomposites with the variation of reduced graphene oxide content. The structural, morphological, magnetic, and electromagnetic parameters and mechanical characteristics of fabricated nanocomposites were investigated and studied...... hiện toàn bộ
In-Out Surface Modification of Halloysite Nanotubes (HNTs) for Excellent Cure of Epoxy: Chemistry and Kinetics Modeling
Nanomaterials - Tập 11 Số 11 - Trang 3078
Shahab Moghari, Seyed Hassan Jafari, Mohsen Khodadadi Yazdi, Maryam Jouyandeh, Aleksander Hejna, Payam Zarrintaj, Mohammad Reza Saeb
In-out surface modification of halloysite nanotubes (HNTs) has been successfully performed by taking advantage of 8-hydroxyquinolines in the lumen of HNTs and precisely synthesized aniline oligomers (AO) of different lengths (tri- and pentamer) anchored on the external surface of the HNTs. Several analyses, including FTIR, H-NMR, TGA, UV-visible spectroscopy, and SEM, were used to establis...... hiện toàn bộ
Adsorptive and Reductive Removal of Chlorophenol from Wastewater by Biomass-Derived Mesoporous Carbon-Supported Sulfide Nanoscale Zerovalent Iron
Nanomaterials - Tập 9 Số 12 - Trang 1786
Hui Wang, Sixiang Cai, Liang Shan, Min Zhuang, Nan Li, Guixiang Quan, Jinlong Yan
Chlorinated compounds in a water environment pose serious threats to humanity. A nanoscale zerovalent iron (nZVI) has desirable properties for water dichlorination, but its reactivity is still limited by agglomeration and oxidation. In this study, the mesoporous carbon (MC) derived from biomass waste was prepared for immobilizing nZVI, and the nZVI@MC was further modified by sulfur (S-nZVI...... hiện toàn bộ
Effects of Different TiO2 Particle Sizes on the Microstructure and Optical Limiting Properties of TiO2/Reduced Graphene Oxide Nanocomposites
Nanomaterials - Tập 9 Số 5 - Trang 730
Yuyu Ren, Lili Zhao, Yang Zou, Lixin Song, Ningning Dong, Jun Wang
TiO2/reduced graphene oxide (rGO) nanocomposites with two different TiO2 particle sizes were synthesized by a facile hydrothermal method using two different source materials of Ti: tetrabutyl titanate (TBT) and commercial TiO2 powder (P25). For respective series with the same source materials, we investigated additions that optimized the nonlinear optical properties (NLO) and optical limit...... hiện toàn bộ
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