Competitive Adsorption of Dopamine and Rhodamine 6G on the Surface of Graphene Oxide

2014 ◽  
Vol 6 (4) ◽  
pp. 2459-2470 ◽  
Author(s):  
Hui Ren ◽  
Dhaval D. Kulkarni ◽  
Rajesh Kodiyath ◽  
Weinan Xu ◽  
Ikjun Choi ◽  
...  
2018 ◽  
Vol 31 (2) ◽  
pp. 165-170 ◽  
Author(s):  
Lu Chen ◽  
Lei Zhang ◽  
Shen-long Jiang ◽  
Qun Zhang

2013 ◽  
Vol 26 (3) ◽  
pp. 252-258 ◽  
Author(s):  
Kai‐li Fan ◽  
Zhen‐kun Guo ◽  
Zhi‐gang Geng ◽  
Jing Ge ◽  
Shen‐long Jiang ◽  
...  
Keyword(s):  

Luminescence ◽  
2021 ◽  
Author(s):  
Dunli Liu ◽  
Qiuyun Wang ◽  
Anmin Chen ◽  
Qingyi Li ◽  
Laizhi Sui ◽  
...  

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Xiaodong Li

Graphene oxide (GO) was synthesized by a modified Hummer’s method and was then reduced by the hydrothermal process. Both GO and reduced GO (rGO) were employed as surface-enhanced Raman scattering (SERS) substrates to detect rhodamine 6G (R6G). After adsorbed on the surface of GO, the fluorescence background of R6G was highly quenched, and its Raman scatterings were enhanced. When adsorbed on the surface of rGO, the fluorescence background was further quenched at the price of lower SERS intensity. The results displayed that oxygen groups on the surface of GO had positive effect on the SERS effect of GO. The amount of oxygen groups on the surface of GO should be one key parameter to adjust the SERS activity of GO.


2020 ◽  
Vol 20 (5) ◽  
pp. 2939-2945 ◽  
Author(s):  
Drashya Gautam ◽  
Shyam Lal ◽  
Sunita Hooda

Magnetic Graphene Oxide nanocomposite prepared by the co-precipitation method based on concept of nanoarchitectonics. In co-precipitation method, Graphene oxide converts into Magnetic graphene oxide nanocomposite with uniform deposition of Fe3O4 nano particles on the surface of Graphene oxide. Field Emission Scanning Electron Microscopy spectroscopy technique reveals the size (~2.5 nm) and uniformity of Fe3O4 nano particles on Graphene oxide surface. The other properties characterized by Scanning electron microscopy, Raman spectroscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy and vibrating-sample magnetometer. For Adsorption process, time, temperature, dose of adsorbent, initial concentration of dye solution and pH factors are optimize for Rhodamine 6G dye. Kinetic data expressed by Pseudo first order model and Pseudo second order model. Langmuir, Freundlich and Temkin isotherms used to evaluate the adsorption isotherm of Rhodamine 6G onto the surface of Magnetic graphene oxide nanocomposite and thermodynamic parameters tell us about the nature of reaction.


Sign in / Sign up

Export Citation Format

Share Document