Gold nanoworms immobilized graphene oxide polymer brush nanohybrid for catalytic degradation studies of organic dyes

2017 ◽  
Vol 396 ◽  
pp. 1427-1434 ◽  
Author(s):  
Navin Kumar Mogha ◽  
Saransh Gosain ◽  
Dhanraj T. Masram
Keyword(s):  
Graphene Oxide ◽  
Organic Dyes ◽  
Polymer Brush ◽  
Catalytic Degradation ◽  
Degradation Studies

scholarly journals Probing the surface reactivity of nanocrystals by the catalytic degradation of organic dyes: the effect of size, surface chemistry and composition

2017 ◽  
Vol 5 (23) ◽  
pp. 11917-11929 ◽  
Author(s):  
Jordi Piella ◽  
Florind Merkoçi ◽  
Aziz Genç ◽  
Jordi Arbiol ◽  
Neus G. Bastús ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Surface Coating ◽  
Crystal Size ◽  
Organic Dyes ◽  
Catalytic Performance ◽  
Surface Reactivity ◽  
Catalytic Degradation ◽  
Comprehensive Study

We herein present a comprehensive study on how the catalytic performance and reusability of Au nanocrystals (NCs) are affected by systematic variations of crystal size, surface coating and composition.

scholarly journals Study on the adsorption of methylene blue from aqueous solution using hydrogel glucomannan/graphene oxide

2021 ◽  
Vol 10 (1) ◽  
pp. 59-66
Author(s):  
Son Le Lam ◽  
Phu Nguyen Vinh ◽  
Hieu Le Trung ◽  
Tan Le Thua ◽  
Nhan Dang Thi Thanh ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Organic Dyes ◽  
Dye Adsorption ◽  
Order Kinetic ◽  
Equilibrium Data ◽  
Order Kinetic Model ◽  
Pseudo Second Order

Glucomannan/graphene oxide (GM/GO) hydrogel was synthesized by using calcium hydroxide as the crosslinker. The synthesized material was characterized by using IR, XRD, SEM, EDX and RAMAN technology. The composite hydrogel was used for removal of organic dyes from aqueous solution. The results showed that the GM/GO hydrogel had a porous structure and a high adsorption capacity toward methylene blue (MB). The pseudo-second-order kinetic model could fit the rate equation of MB adsorption onto the GM/GO hydrogel. The adsorption of MB onto GM/GO hydrogel was a spontaneous process. In addition, the equilibrium adsorption isotherm data indicated that equilibrium data were fitted to the Langmuir isotherm and the maximum dye adsorption capacity was 198,69 mg.g-1. Moreover, the hydrogel was stable and easily recovered and adsorption capacity was around 97% of the initial saturation adsorption capacity after being used five times.

An efficient method for the synthesis of a polymer brush via click chemistry and its ultrasensitive electrochemical detection of AFP

2018 ◽  
Vol 10 (20) ◽  
pp. 2390-2397 ◽  
Author(s):  
Dongcheng Yang ◽  
Jing Wang ◽  
Hou Chen ◽  
Hui Xu ◽  
Wenxiang Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Click Chemistry ◽  
Tumor Markers ◽  
Electrochemical Detection ◽  
Efficient Method ◽  
Polymer Brush ◽  
Electrochemical Immunosensor ◽  
Ultrasensitive Detection

A sensitive electrochemical immunosensor based on polyacrylonitrile-g-poly(hydroxyethylmethacrylate) (PAN-g-PHEMA)/graphene oxide (GO) composites was prepared for the ultrasensitive detection of tumor markers.

Functionalization of Graphene with O and S for Catalytic Degradation of Chlorophenols and Dyes

2021 ◽  
Vol 1019 ◽  
pp. 194-204
Author(s):  
S. Sudhaparimala ◽  
R. Usha
Keyword(s):  
Graphene Oxide ◽  
Organic Dyes ◽  
Analytical Techniques ◽  
Degradation Process ◽  
Experimental Conditions ◽  
Photocatalytic Application ◽  
Wide Range ◽  
Doped Graphene ◽  
The Given ◽  
Graphene Structures

Graphene, functionalized with the heteroatoms like nitrogen, oxygen and sulphur atoms has been well explored for a wide range of applications but only few reports are available on its adsorption and photocatalytic application in the degradation of chlorophenols and organic dyes. A simple and energy-efficient process to prepare graphene oxide and sulphur doped graphene oxide was developed. The micro structure and surface morphology were confirmed by the analytical techniques of Powder X-ray diffractogram (PXRD), Fourier Transformed Raman Spectroscopy (FT-Raman), Scanning Electron Microscopy. The results were suggestive of the structures suitable for screening their catalytic activity in the degradation of the highly toxic polychlorophenols and organic dyes. The adsorption and photo catalytic properties of the asprepared samples were screened for the degradation process and it was found that sulphur doped graphene oxide showed more positive results for the degradation of chlorophenols than graphene oxide. Under the given experimental conditions the decoloration of dyes were not satisfactory. Ultimately, the study provided an economical and efficient, method for tuning graphene structures for the removal of pollutants in wastewater.

Sign in / Sign up

Export Citation Format

Share Document