Temperature dependence on the size control of palladium nanoparticles by chemical reduction in nonionic surfactant/ionic liquid hybrid systems

2020 ◽  
Vol 311 ◽  
pp. 113255
Author(s):  
Masafumi Harada ◽  
Miho Yamamoto ◽  
Maharu Sakata
Keyword(s):  
Ionic Liquid ◽  
Temperature Dependence ◽  
Nonionic Surfactant ◽  
Hybrid Systems ◽  
Palladium Nanoparticles ◽  
Chemical Reduction ◽  
Size Control

scholarly journals Size Control of Synthesized Silver Nanoparticles by Simultaneous Chemical Reduction and Laser Fragmentation in Origanum majorana Extract: Antibacterial Application

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2326
Author(s):  
Entesar Ali Ganash ◽  
Reem Mohammad Altuwirqi
Keyword(s):  
Silver Nanoparticles ◽  
Irradiation Time ◽  
Chemical Reduction ◽  
Size Control ◽  
Reduction Process ◽  
Laser Wavelength ◽  
X Ray Diffraction ◽  
Ag Nps ◽  
Transmission Electron ◽  
Origanum Majorana

In this work, silver nanoparticles (Ag NPs) were synthesized using a chemical reduction approach and a pulsed laser fragmentation in liquid (PLFL) technique, simultaneously. A laser wavelength of 532 nm was focused on the as produced Ag NPs, suspended in an Origanum majorana extract solution, with the aim of controlling their size. The effect of liquid medium concentration and irradiation time on the properties of the fabricated NPs was studied. While the X-ray diffraction (XRD) pattern confirmed the existence of Ag NPs, the UV–Vis spectrophotometry showed a significant absorption peak at about 420 nm, which is attributed to the characteristic surface plasmon resonance (SPR) peak of the obtained Ag NPs. By increasing the irradiation time and the Origanum majora extract concentration, the SPR peak shifted toward a shorter wavelength. This shift indicates a reduction in the NPs’ size. The effect of PLFL on size reduction was clearly revealed from the transmission electron microscopy images. The PLFL technique, depending on experimental parameters, reduced the size of the obtained Ag NPs to less than 10 nm. The mean zeta potential of the fabricated Ag NPs was found to be greater than −30 mV, signifying their stability. The Ag NPs were also found to effectively inhibit bacterial activity. The PLFL technique has proved to be a powerful method for controlling the size of NPs when it is simultaneously associated with a chemical reduction process.

Improved size control of large palladium nanoparticles by a seeding growth method

2001 ◽  
Vol 12 (2) ◽  
pp. 156-158 ◽  
Author(s):  
Lehui Lu ◽  
Haishui Wang ◽  
Shiquan Xi ◽  
Hongjie Zhang
Keyword(s):  
Palladium Nanoparticles ◽  
Size Control ◽  
Growth Method

Enhancing Electroresponsive Electrorheological Effect and Temperature Dependence of Poly(ionic liquid) Particles by Hard Core Confinement

Langmuir ◽  
2018 ◽  
Vol 34 (51) ◽  
pp. 15827-15838 ◽  
Author(s):  
Qi Lei ◽  
Chen Zheng ◽  
Fang He ◽  
Jia Zhao ◽  
Yang Liu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Temperature Dependence ◽  
Hard Core ◽  
Electrorheological Effect ◽  
Poly Ionic Liquid

Size control synthesis and amperometric sensing activity of Palladium nanoparticles for Glucose detection

2018 ◽  
Vol 5 (1) ◽  
pp. 2049-2055 ◽  
Author(s):  
A. Mahajan ◽  
S. Banik ◽  
S. Roy Chowdhury ◽  
P.S. Roy ◽  
S.K. Bhattacharya
Keyword(s):  
Palladium Nanoparticles ◽  
Size Control ◽  
Control Synthesis ◽  
Glucose Detection ◽  
Amperometric Sensing

The Effect of Regional Selectivity on the Corrosion Inhibition Properties of Synthetic Ionic Liquid with the Synergistic Action of Cation and Anion

2021 ◽  
Author(s):  
Jian Sun ◽  
Xinyue Wang ◽  
huajing Gao ◽  
Feng Chen ◽  
Xing-Bao Wang ◽  
...  
Keyword(s):  
Weight Loss ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Hybrid Systems ◽  
Corrosion Inhibition ◽  
Synergistic Action ◽  
Weight Loss Method ◽  
Loss Method ◽  
Regional Selectivity

By adding different proportions of N-buthylimidazole and carboxyethylthiosuccinic acid (CETSA), three hybrid systems of ionic liquids were synthesized and named ILHS1, ILHS2 and ILHS3. By using weight loss method, electrochemical...

scholarly journals Thermochromism of Highly Luminescent Photopolymer Flexible Films Based On Eu (III) Salts Confined in Polysulfone

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5394
Author(s):  
Mani Outis ◽  
João Paulo Leal ◽  
Maria Helena Casimiro ◽  
Bernardo Monteiro ◽  
Cláudia Cristina Lage Pereira
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Melting Point ◽  
Quantum Yield ◽  
Thermal Behavior ◽  
Temperature Dependence ◽  
Strong Temperature Dependence ◽  
Host Matrix ◽  
Flexible Films ◽  
First Time

Here we discuss the influence of two different cations on the emissive properties of the highly emissive [Eu(fod)4]− anion. The studied Eu(III) salts were [C16Pyr][Eu(fod)4] (1), and the previously reported [Chol][Eu(fod)4]. C16Pyr stands for N-cetylpyridinium, Chol for cholinium and fod for 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate. 1 is classified as ionic liquid, with melting point close to 60 °C, and presented a luminescence quantum yield of (ϕ) 100%. Ultrabright emissive photopolymers were obtained for the first time using polysulfone as the host matrix. The films were prepared with incorporation of 10% (w/w) of 1 and [Chol][Eu(fod)4] in the polymeric matrix, which improved its thermal stability. Additionally, the luminescence of CholEu(fod)4/PSU presented a strong temperature dependence with a ratiometric thermal behavior.

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