A novel and green CTAB-functionalized graphene nanosheets electrochemical sensor for Sudan I determination

2014 ◽  
Vol 203 ◽  
pp. 759-765 ◽  
Author(s):  
Yexuan Mao ◽  
Qiannan Fan ◽  
Jianjun Li ◽  
Lanlan Yu ◽  
Ling-bo Qu
2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Jinlong Liu ◽  
Yihong Chen ◽  
Yujing Guo ◽  
Fengling Yang ◽  
Fangqin Cheng

An electrochemical sensor for the quantification of o-nitrophenol (o-NP) has been developed based on theβ-cyclodextrin functionalized graphene nanosheets modified glassy carbon electrode (CD-GNs/GCE). The results indicated that CD-GNs showed good electrochemical behavior to the redox of o-NP which is attributed to the combination of the excellent properties of graphene and cyclodextrin. The peak currents possess a linear relationship with the concentration of o-NP in the range of 5–400 μM. The detection limit of o-NP reached to 0.3 μM on the basis of the signal-to-noise characteristics (S/N=3). The peak potentials for the reversible redox waves are not affected by other nitrophenol isomers (m, p-NP), illustrating good selectivity. Furthermore, the developed electrochemical sensor exhibited good stability and reproducibility for the detection of o-NP and could be used to determine o-NP in real water sample.


2019 ◽  
Vol 131 ◽  
pp. 605-619 ◽  
Author(s):  
Gayatri Paul ◽  
Subhasis Shit ◽  
Harish Hirani ◽  
Tapas Kuila ◽  
N.C. Murmu

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 398 ◽  
Author(s):  
Yongcun Zhou ◽  
Xiao Zhuang ◽  
Feixiang Wu ◽  
Feng Liu

Polymer composites with high thermal conductivity have a great potential for applications in modern electronics due to their low cost, easy process, and stable physical and chemical properties. Nevertheless, most polymer composites commonly possess unsatisfactory thermal conductivity, primarily because of the high interfacial thermal resistance between inorganic fillers. Herein, we developed a novel method through silver functionalized graphene nanosheets (GNS) and multiwalled carbon nanotube (MWCNT) composites with excellent thermal properties to meet the requirements of thermal management. The effects of composites on interfacial structure and properties of the composites were identified, and the microstructures and properties of the composites were studied as a function of the volume fraction of fillers. An ultrahigh thermal conductivity of 12.3 W/mK for polymer matrix composites was obtained, which is an approximate enhancement of 69.1 times compared to the polyvinyl alcohol (PVA) matrix. Moreover, these composites showed more competitive thermal conductivities compared to untreated fillers/PVA composites applied to the desktop central processing unit, making these composites a high-performance alternative to be used for thermal management.


2019 ◽  
Vol 173 ◽  
pp. 421-428 ◽  
Author(s):  
Vrushti Kansara ◽  
Rahul Patil ◽  
Rahul Tripathi ◽  
Prafulla K. Jha ◽  
Pratap Bahadur ◽  
...  

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