Electrochemical sensing of thiodiglycol, the main hydrolysis product of sulfur mustard, by using an electrode composed of an ionic liquid, graphene nanosheets and silver nanoparticles

2016 ◽  
Vol 183 (8) ◽  
pp. 2395-2401 ◽  
Author(s):  
Mojtaba Mahyari
Keyword(s):  
Silver Nanoparticles ◽  
Ionic Liquid ◽  
Sulfur Mustard ◽  
Graphene Nanosheets ◽  
Hydrolysis Product ◽  
Electrochemical Sensing

Effects of ionic liquid types on the tribological, mechanical, and thermal properties of ionic liquid modified graphene/polyimide shape memory composites

2021 ◽  
pp. 095400832199676
Author(s):  
Yuting Ouyang ◽  
Qiu Zhang ◽  
Xiukun Liu ◽  
Ruan Hong ◽  
Xu Xu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Composite Materials ◽  
Shape Memory ◽  
Recovery Rate ◽  
Shape Recovery ◽  
Graphene Nanosheets ◽  
Mechanical And Thermal Properties ◽  
Thermal And Mechanical Properties ◽  
Modified Graphene

Different ionic liquid modified graphene nanosheets (IG) were induced into polyimide (PI) to improve the tribological, thermal, and mechanical properties of shape memory IG/PI composites. The results demonstrated that when using 1-aminoethyl-3-methylimidazole bromide to modify graphene nanosheets (IG-1), the laser-driven shape recovery rate of IG-1/PI composites (IGPI-1) reached 73.02%, which was 49.36% higher than that of pure PI. In addition, the IGPI-1 composite materials reached the maximum shape recovery rate within 15 s. Additionally, under dry sliding, the addition of IG can significantly improve the tribological properties of composite materials. IGPI-1 exhibited the best self-lubricating properties. Compared with pure PI, the friction coefficient (0.19) and wear rate (2.62 × 10–5) mm3/Nm) were reduced by 44.1% and 24.2%, respectively, and the T10% of IGPI-1 increased by 32.2°C. The Tg of IGPI-1 reached 256.5°C, which was 8.4°C higher than that of pure PI. In addition, the tensile strength and modulus of IGPI-1 reached 82.3 MPa and 1.18 GPa, which were significantly increased by 33.6% and 29.8%, respectively, compared with pure PI. We hope that this work will be helpful for the preparation of shape memory materials with excellent tribological, thermal, and mechanical properties.

Nanoconfined Electrochemical Sensing of Single Silver Nanoparticles with a Wireless Nanopore Electrode

ACS Sensors ◽  
2020 ◽  
Author(s):  
Ru-Jia Yu ◽  
Su-Wen Xu ◽  
Soumyadeep Paul ◽  
Yi-Lun Ying ◽  
Ling-Fei Cui ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Electrochemical Sensing ◽  
Nanopore Electrode

Chitosan/heparin blends in ionic liquid produce polyelectrolyte complexes that quickly adsorb citrate-capped silver nanoparticles, forming bactericidal composites

2021 ◽  
Vol 330 ◽  
pp. 115548
Author(s):  
Paulo R. Souza ◽  
Bruno H. Vilsinski ◽  
Ariel C. de Oliveira ◽  
Sharise B.R. Berton ◽  
Cátia S. Nunes ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Ionic Liquid ◽  
Polyelectrolyte Complexes

Green synthesized unmodified silver nanoparticles as a multi-sensor for Cr(iii) ions

2018 ◽  
Vol 4 (10) ◽  
pp. 1531-1542 ◽  
Author(s):  
Archana Aravind ◽  
Maria Sebastian ◽  
Beena Mathew
Keyword(s):  
Silver Nanoparticles ◽  
Lycopersicon Esculentum ◽  
Surface Functionalization ◽  
Electrochemical Sensing ◽  
Green Method ◽  
Optical Fluorescence

In this work we present optical, fluorescence and electrochemical sensing of Cr(iii) ions using silver nanoparticles (AgNPs) synthesized by a green method using Lycopersicon esculentum (LE) extract without any surface functionalization.

Electrochemical sensing of ractopamine by carbon nitride nanotubes/ionic liquid nanohybrid in presence of other β-agonists

2018 ◽  
Vol 254 ◽  
pp. 8-11 ◽  
Author(s):  
Samet Mert ◽  
Bahar Bankoğlu ◽  
Abdullah Özkan ◽  
Necip Atar ◽  
Mehmet Lütfi Yola
Keyword(s):  
Ionic Liquid ◽  
Carbon Nitride ◽  
Electrochemical Sensing

Ultrathin 2D graphitic carbon nitride nanosheets decorated with silver nanoparticles for electrochemical sensing of quercetin

2018 ◽  
Vol 826 ◽  
pp. 207-216 ◽  
Author(s):  
Pitchaimani Veerakumar ◽  
Chellakannu Rajkumar ◽  
Shen-Ming Chen ◽  
Balamurugan Thirumalraj ◽  
King-Chuen Lin
Keyword(s):  
Silver Nanoparticles ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Electrochemical Sensing ◽  
Graphitic Carbon Nitride ◽  
Carbon Nitride Nanosheets

A highly selective colorimetric assay for the determination of creatinine in biological samples using gluconic acid capped silver nanoparticles after ionic liquid based dispersive liquid phase microextraction

2021 ◽  
pp. 1-8
Author(s):  
Susan Sadeghi ◽  
Mohadeseh Hosseinpour-Zaryabi
Keyword(s):  
Silver Nanoparticles ◽  
Ionic Liquid ◽  
Liquid Phase ◽  
Human Serum ◽  
Gluconic Acid ◽  
Ag Nps ◽  
Liquid Phase Microextraction ◽  
Relative Standard ◽  
Serum And Urine

A dispersive liquid-phase microextraction method combined with UV–vis spectrophotometry was utilized to highly selective determination of creatinine in human serum and urine samples. To overcome the interferences in complex matrices, creatinine reacted with 1,4-naphthoquinone-2- potassium sulfonate reagent to produce a red coloured product that could be extracted into a small volume of 1-hexyl-3-methylimidazolium hexafluorophosphate ([HMIM]PF6) ionic liquid solvent. To increase the sensitivity of the assay, gluconic acid capped silver nanoparticles (Ag NPs) were used. On addition of Ag NPs to the red coloured extracted product, the solution turned to blue accompanied with a red shift in wavelength around 620 nm that could be detected by the naked eye. The effective variables on the determination of creatinine such as concentration of the reagent, amount of formic and hydrochloric acids, type and volume of the extractant, and concentration of Ag NPs were investigated. Under the optimal conditions, the calibration plot was bimodal with linear ranges from 0.1 to 1.5 µg mL−1 and 1.5 to 105 µg mL−1 creatinine with a limit of detection 0.1 µg mL−1. The relative standard deviation for five measurements at 35 µg mL−1 concentration level was 3.8%. The newly developed assay was used for the determination of creatinine in human serum and urine specimens with satisfactory results.

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