Synergistic impacts of composite formation and doping techniques to boost the photocatalytic aptitude of the BiFeO3 nanostructure

2021 ◽  
Author(s):  
Muhammad Shahid ◽  
Sheraz Bashir ◽  
Adeel Afzal ◽  
Sami M. Ibn Shamsah ◽  
Akmal Jamil
Keyword(s):  
Composite Formation

Incorporation of Multi Wall Carbon Nanotubes into Glass-Surfaces via Laser-Treatment

2003 ◽  
Vol 772 ◽  
Author(s):  
T. Seeger ◽  
G. de la Fuente ◽  
W.K. Maser ◽  
A.M. Benito ◽  
A. Righi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Continuous Wave ◽  
Silica Surface ◽  
Multi Wall Carbon Nanotubes ◽  
Composite Formation ◽  
Multi Walled Carbon Nanotubes ◽  
Glass Surfaces ◽  
Walled Carbon Nanotubes ◽  
First Time ◽  
Scanning Electron

AbstractCarbon nanotubes (CNT) are interesting candidates for the reinforcement in robust composites and for conducting fillers in polymers due to their fascinating electronic and mechanical properties. For the first time, we report the incorporation of multi walled carbon nanotubes (MWNTs) into silica-glass surfaces by means of partial surface-melting caused by a continuous wave Nd:YAG laser. MWNTs were detected being well incorporated in the silica-surface. The composites are characterized using scanning electron microscopy (SEM) and Raman-spectroscopy. A model for the composite-formation is proposed based on heatabsorption by MWNTs and a partial melting of the silica-surface.

scholarly journals Optimization of the Production Process and Product Quality of Titanate Nanotube–Drug Composites

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1406 ◽  
Author(s):  
Yasmin Ranjous ◽  
Géza Regdon ◽  
Klára Pintye-Hódi ◽  
Tamás Varga ◽  
Imre Szenti ◽  
...  
Keyword(s):  
Scanning Calorimetry ◽  
Good Solubility ◽  
Composite Formation ◽  
Alternative Materials ◽  
High Volatility ◽  
Ft Ir ◽  
Fast Disintegrating Tablets ◽  
As Solubility ◽  
Properties Of Composites

Recently, there has been an increasing interest in the application of nanotubular structures for drug delivery. There are several promising results with carbon nanotubes; however, in light of some toxicity issues, the search for alternative materials has come into focus. The objective of the present study was to investigate the influence of the applied solvent on the composite formation of titanate nanotubes (TNTs) with various drugs in order to improve their pharmacokinetics, such as solubility, stability, and bioavailability. Composites were formed by the dissolution of atenolol (ATN) and hydrochlorothiazide (HCT) in ethanol, methanol, 0.01 M hydrochloric acid or in ethanol, 1M sodium hydroxide, dimethylformamide (DMF), dimethyl sulfoxide (DMSO), respectively, and then they were mixed with a suspension of TNTs under sonication for 30 min and vacuum-dried for 24 h. The structural properties of composites were characterized by SEM, TEM, FT-IR, differential scanning calorimetry (DSC), thermogravimetric (TG) analysis, and optical contact angle (OCA) measurements. Drug release was determined from the fast disintegrating tablets using a dissolution tester coupled with a UV–Vis spectrometer. The results revealed that not only the good solubility of the drug in the applied solvent, but also the high volatility of the solvent, is necessary for an optimal composite-formation process.

scholarly journals Boron Concentration Induced Co-Ta-B Composite Formation Observed in the Transition from Metallic to Covalent Glasses

2020 ◽  
Vol 5 (1) ◽  
pp. 18
Author(s):  
Simon Evertz ◽  
Stephan Prünte ◽  
Lena Patterer ◽  
Amalraj Marshal ◽  
Damian M. Holzapfel ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Metallic Glasses ◽  
Boron Concentration ◽  
High Strength ◽  
Point Of View ◽  
Composite Formation ◽  
Structural Applications ◽  
Glassy Materials ◽  
Metallic Bonding ◽  
Composite Region

Due to their unique property combination of high strength and toughness, metallic glasses are promising materials for structural applications. As the behaviour of metallic glasses depends on the electronic structure which in turn is defined by chemical composition, we systematically investigate the influence of B concentration on glass transition, topology, magnetism, and bonding for B concentrations x = 2 to 92 at.% in the (Co6.8±3.9Ta)100−xBx system. From an electronic structure and coordination point of view, the B concentration range is divided into three regions: Below 39 ± 5 at.% B, the material is a metallic glass due to the dominance of metallic bonds. Above 69 ± 6 at.%, the presence of an icosahedra-like B network is observed. As the B concentration is increased above 39 ± 5 at.%, the B network evolves while the metallic coordination of the material decreases until the B concentration of 67 ± 5 at.% is reached. Hence, a composite is formed. It is evident that, based on the B concentration, the ratio of metallic bonding to icosahedral bonding in the composite can be controlled. It is proposed that, by tuning the coordination in the composite region, glassy materials with defined plasticity and processability can be designed.

Ground subsidence characteristics caused by construction of shallow-buried tunnel in a sandy soil composite formation

2020 ◽  
Vol 13 (18) ◽  
Author(s):  
Peng Zhang ◽  
Yajing Pan ◽  
Zhaocheng Yu ◽  
Xiaoming Guan ◽  
Gang Wang ◽  
...  
Keyword(s):  
Sandy Soil ◽  
Ground Subsidence ◽  
Composite Formation ◽  
Shallow Buried Tunnel

Enhancement of the protonic conductivity of α-zirconium phosphate by composite formation with alumina or silica

1997 ◽  
Vol 97 (1-4) ◽  
pp. 227-232 ◽  
Author(s):  
Xavier Glipa ◽  
Jean-Michel Leloup ◽  
Deborah J Jones ◽  
Jacques Rozière
Keyword(s):  
Zirconium Phosphate ◽  
Protonic Conductivity ◽  
Composite Formation

A Shear Mixing approach in Polymer Composite Formation

2021 ◽  
Author(s):  
Saba Ayub ◽  
Beh Hoe Guan ◽  
Faiz Ahmad ◽  
Zaib Un Nisa
Keyword(s):  
Polymer Composite ◽  
Composite Formation ◽  
Shear Mixing

Improvement of Bleached Shellac as Enteric Coating by Composite Formation

2021 ◽  
Vol 22 (7) ◽  
Author(s):  
Manee Luangtana-anan ◽  
Suthep Saengsod ◽  
Sontaya Limmatvapirat
Keyword(s):  
Enteric Coating ◽  
Composite Formation ◽  
Bleached Shellac

An Investigation on the Mechanism of TiC+Al2O3 Combustion Synthesis via Mechanical Activation of Double Phases in TiO2-Al-C System

2008 ◽  
Vol 273-276 ◽  
pp. 210-215 ◽  
Author(s):  
Sayed Hamid Reza Fatemi Nayeri ◽  
Jalil Vahdati Khaki ◽  
Mohammad Reza Aboutalebi
Keyword(s):  
Mechanical Activation ◽  
Combustion Synthesis ◽  
Reaction Temperature ◽  
Synthesis Temperature ◽  
Synthesis Process ◽  
Third Phase ◽  
Transmission Electron ◽  
Al2o3 Composite ◽  
Composite Formation ◽  
Xrd Patterns

The starting reaction in the combustion synthesis process in TiO2-Al-C system leading to TiC+Al2O3 composite was evaluated using a combination of Differential Thermal Analysis (DTA), X-Ray Diffraction (XRD) and Transmission Electron Microscope (TEM). Double phases in 3TiO2- 4Al-3C system were milled separately and then the third phase was added according to the stoichiometric reaction for 3TiC+2Al2O3 composite formation. The combustion synthesis temperature was observed to decrease from 962 °C to 649 °C after mechanical activation of TiO2/Al mixture for 16 hr. On the contrary, the mechanical activation of Al/C and TiO2/C mixtures for 16 hr made the reaction temperature increase to 995 °C and 1024 °C, respectively. TEM and XRD patterns of as-milled powders showed that the reaction temperature changes could be due to increased TiO2 and Al interface area. In addition, DTA experiments showed that for the sample in which TiO2 and Al were mechanically activated the reaction occurred at the temperature even lower than the aluminum melting point.

scholarly journals Synthesis and Optical Manifestation of NiO-Silica Nanocomposite

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
S. Chakrabarty ◽  
K. Chatterjee
Keyword(s):  
Sol Gel ◽  
Size Variation ◽  
Average Diameter ◽  
Xrd Analysis ◽  
Peak Position ◽  
Band Gap Energy ◽  
Strong Emission ◽  
Silica Nanocomposites ◽  
Composite Formation ◽  
Silica Nanocomposite

NiO-silica nanocomposites with average diameter ranging from 2–40 nm were prepared by sol-gel method followed by the heat treatment varying from 400°C to 1000°C. The details of morphology and crystalline nature of all the as prepared samples were characterized by TEM, HRTEM, and XRD analysis. The planes obtained from SAED pattern supports the planes originated from XRD study. From the optical absorption study, it is revealed that the band gap energy of NiO can extensively be manipulated by composite formation with silica and the size variation of that nanocomposite. Absorption peak position varies almost linearly with the oxidation temperature of the samples. Photoluminescence spectroscopy reveals that NiO-silica nanocomposite, prepared at 600°C and below, shows strong emission at 3.62 eV, but the nanocomposites with bigger size greatly hinder the effect of selective emissivity.

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