scholarly journals One step microwave-assisted synthesis of nanocrystalline WOx–ZrO2 acid catalysts

2016 ◽  
Vol 6 (23) ◽  
pp. 8257-8267 ◽  
Author(s):  
Francisco Gonell ◽  
David Portehault ◽  
Beatriz Julián-López ◽  
Karine Vallé ◽  
Clément Sanchez ◽  
...  
Keyword(s):  
Microwave Synthesis ◽  
Microwave Assisted Synthesis ◽  
Acid Catalysts ◽  
Microwave Assisted ◽  
One Step

One-step microwave synthesis allows one to tune WOx species and ZrO2 polymorphs showing different activities in acid reactions.

One Step Microwave-Assisted Synthesis of Fluorinated Titania Photocatalyst

2015 ◽  
Vol 670 ◽  
pp. 177-182
Author(s):  
Alexey A. Sadovnikov ◽  
Alexander E. Baranchikov ◽  
Vladimir Kozik ◽  
Lyudmila P. Borilo ◽  
Sergey A. Kozyukhin ◽  
...  
Keyword(s):  
Ammonium Fluoride ◽  
Organic Dye ◽  
Microwave Assisted Synthesis ◽  
Dye Sensitized ◽  
Microwave Assisted ◽  
One Step ◽  
Nanocrystalline Titanium ◽  
Nanocrystalline Titanium Dioxide ◽  
Titania Photocatalyst ◽  
Hydrolysis Of

Microwave-assisted high temperature hydrolysis of titanium oxysulfate, in the presence of ammonium fluoride, allows synthesizing nanocrystalline titanium dioxide photocatalysts possessing photocatalytic activity as high as the commercial photocatalyst Evonik Aeroxide® TiO2 P 25. Dye-sensitized reactions play an important role in organic dye discoloration in the presence of fluorinated titania.

One-step microwave-assisted synthesis of carbon-supported ternary Pt-Sn-Rh alloy nanoparticles for fuel cells

2020 ◽  
Vol 115 ◽  
pp. 272-278
Author(s):  
Xiaobo Hu ◽  
Pingping Song ◽  
Xiaolong Yang ◽  
Cheng Wang ◽  
Jianlong Wang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Microwave Assisted Synthesis ◽  
Alloy Nanoparticles ◽  
Microwave Assisted ◽  
One Step

Microwave-assisted synthesis of porous organic cages CC3 and CC2

CrystEngComm ◽  
2019 ◽  
Vol 21 (31) ◽  
pp. 4534-4537 ◽  
Author(s):  
Jolie Lucero ◽  
Carla Osuna ◽  
James M. Crawford ◽  
Moises A. Carreon
Keyword(s):  
Microwave Synthesis ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

The microwave synthesis of two prototypical porous organic cages, denoted as CC3 and CC2 is demonstrated.

scholarly journals Microwave-assisted synthesis of high thermal stability and colourless polyimides containing pyridine

2019 ◽  
Vol 6 (6) ◽  
pp. 190196 ◽  
Author(s):  
Kai Cheng ◽  
Jie-pin Hu ◽  
Yan-cheng Wu ◽  
Chu-qi Shi ◽  
Zhi-geng Chen ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Synthesis Method ◽  
Optical Transmittance ◽  
Aromatic Diamine ◽  
Microwave Assisted Synthesis ◽  
Step Method ◽  
Light Emitting ◽  
Microwave Assisted ◽  
One Step ◽  
Biphenyltetracarboxylic Dianhydride

A novel aromatic diamine containing pyridyl side group, 4-pyridine-4,4-bis(3,5-dimethyl-5-aminophenyl)methane (PyDPM), was successfully synthesized via electrophilic substitution reaction. The polyimides (PIs) containing pyridine were obtained via the microwave-assisted one-step polycondensation of the PyDPM with pyromellitic dianhydride (PMDA), 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA), 3,3′,4,4′-diphenylether tetracarboxylic dianhydride (ODPA) and 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA). Contrarily to the reported similar PIs, these PIs exhibit much higher thermal stability or heat resistance, i.e. high glass transition temperatures ( T g s) in the range of 358–473°C, and the decomposition temperatures at 5% weight loss over 476°C under nitrogen. They can afford flexible and strong films with tensile strength of 82.1–93.3 MPa, elongation at break of 3.7%–15.2%, and Young's modulus of 3.3–3.8 GPa. Furthermore, The PI films exhibit good optical transparency with the cut-off wavelength at 313–366 nm and transmittance higher than 73% at 450 nm. The excellent thermal and optical transmittance can be attributed to synthesis method and the introduction of pyridine rings and ortho-methyl groups. The inherent viscosities of PIs via one-step method were found to be 0.58–1.12 dl g −1 in DMAc, much higher than those via two-step method. These results indicate these PIs could be potential candidates for optical substrates of organic light emitting diodes (OLEDs).

Microwave Synthesis and Properties of Thin Layer Pt Modified TiO2 Nanofibers Coating

2016 ◽  
Vol 721 ◽  
pp. 383-388
Author(s):  
Reinis Drunka ◽  
Jānis Grabis ◽  
Dzidra Jankovica ◽  
Aija Krūmiņa
Keyword(s):  
Thin Layer ◽  
Surface Area ◽  
Visible Light Irradiation ◽  
Microwave Synthesis ◽  
Raw Materials ◽  
Synthesis Method ◽  
Total Surface Area ◽  
Microwave Assisted Synthesis ◽  
Fiber Layer ◽  
Microwave Assisted

In the present work formation of macro-size TiO2 nanofiber layers in microwave synthesis were studied. Anatase nanopowder and 10M KOH solution were used as raw materials. Microwave assisted synthesis method permitted to obtain TiO2 nanofibres containing individual nanowires with a diameter of 5nm and a specific surface area up to 129m2/g. Macro size layer of TiO2 nanofibers was obtained on the surface of microwave vessel. Total surface area covered with TiO2 was about 390cm2. Modification with platinum allows to increase photocatalytical activity of TiO2 macro size fiber layer up to 94.4% in UV irradiation and up to 11.6% under visible light irradiation.

scholarly journals Highly efficient microwave synthesis of rhodanine and 2-thiohydantoin derivatives and determination of relationships between their chemical structures and antibacterial activity

RSC Advances ◽  
2019 ◽  
Vol 9 (67) ◽  
pp. 39367-39380 ◽  
Author(s):  
Waldemar Tejchman ◽  
Bartosz Orwat ◽  
Izabela Korona-Głowniak ◽  
Anna Barbasz ◽  
Ireneusz Kownacki ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Microwave Synthesis ◽  
Chemical Structure ◽  
Biological Properties ◽  
Microwave Assisted Synthesis ◽  
Chemical Structures ◽  
Microwave Assisted ◽  
Highly Efficient

An efficient microwave-assisted synthesis of rhodanine and 2-thiohydantoin derivatives, and the correlation between their chemical structure and biological properties is reported.

scholarly journals Microwave assisted synthesis of negative-charge carbon dots with potential antibacterial activity against multi-drug resistant bacteria

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 41202-41208
Author(s):  
Jung-Chang Kung ◽  
I-Ting Tseng ◽  
Chi-Sheng Chien ◽  
Sheng-Hui Lin ◽  
Chun-Chi Wang ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Carbon Dots ◽  
Negative Charge ◽  
Resistant Bacteria ◽  
Microwave Assisted Synthesis ◽  
Drug Resistant ◽  
Antibacterial Ability ◽  
Microwave Assisted ◽  
Drug Resistant Bacteria ◽  
One Step

In this research, negative-charge carbon dots (CDs) were synthesized in one-step using a microwave and found to have potential antibacterial ability against multi-drug resistant bacteria.

scholarly journals Microwave-Assisted Synthesis of Fluoroquinolones and Their Nucleosides as Inhibitors of HIV Integrase

2006 ◽  
Vol 71 (7) ◽  
pp. 978-990 ◽  
Author(s):  
Martina M. Adams ◽  
Jan W. Bats ◽  
Nadja V. Nikolaus ◽  
Myriam Witvrouw ◽  
Zeger Debyser ◽  
...  
Keyword(s):  
Microwave Assisted Synthesis ◽  
Hiv Integrase ◽  
Inhibitory Effects ◽  
Microwave Assisted ◽  
Microwave Application ◽  
Anti Conformation ◽  
One Step ◽  
New Type ◽  
The One ◽  
Hiv 1

Six fluoroquinolone ribonucleosides were synthesized by using microwave irradiation starting from fluoroanilines. In most cases the microwave application proved superior in time and yield, especially the one step decarboxylation of the carboxyquinolone esters3a-3cand the Vorbrüggen glycosylation. The former led to the new type of fluoroquinolone ribosides8a-8c. Compound8cin the crystal structure showed C3'-endo and anti conformation. The nucleosides were examined, but found inactive against the replication of HIV-1(IIIB) in cell culture, while they were toxic for the cells at a 50% cytotoxic concentration ranging from 31 to >125 μg/ml. But measurements of the inhibitory effects against HIV-1 integrase enzymatic activity showed an interesting activity for compound8c.

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