Synthesis of 1,3-di(4-amino-1-pyridinium)propane ionic liquid functionalized graphene nanosheets and its application in direct electrochemistry of hemoglobin

2013 ◽  
Vol 95 ◽  
pp. 71-79 ◽  
Author(s):  
Rui Li ◽  
Changxian Liu ◽  
Ming Ma ◽  
Zhengguo Wang ◽  
Guoqing Zhan ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Graphene Nanosheets ◽  
Direct Electrochemistry ◽  
Functionalized Graphene

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.

Graphene Nanoparticles Decorated Silicon Nanowires with Tungsten Oxide Counter Electrode for Quasi-Solid State Hybrid Solar Cells

2021 ◽  
Author(s):  
Ankita Kolay ◽  
Manoranjan Ojha ◽  
Melepurath Deepa
Keyword(s):  
Ionic Liquid ◽  
Solar Cells ◽  
Solid State ◽  
Tungsten Oxide ◽  
Silicon Nanowires ◽  
Counter Electrode ◽  
Near Infrared ◽  
Hybrid Solar Cells ◽  
Functionalized Graphene ◽  
Graphene Nanoparticles

Anchoring ionic liquid functionalized graphene nanoparticles (IL-GNP) to silicon nanowires (SiNW) improves the solar spectral utilization from visible to near infrared (NIR). Due to the bandgap of IL-GNP in the...

Tribological behavior of dodecylamine functionalized graphene nanosheets dispersed engine oil nanolubricants

2019 ◽  
Vol 131 ◽  
pp. 605-619 ◽  
Author(s):  
Gayatri Paul ◽  
Subhasis Shit ◽  
Harish Hirani ◽  
Tapas Kuila ◽  
N.C. Murmu
Keyword(s):  
Tribological Behavior ◽  
Graphene Nanosheets ◽  
Engine Oil ◽  
Functionalized Graphene
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