Effect of surface functional groups on hydrogen adsorption properties of Pd dispersed reduced graphene oxide

2017 ◽  
Vol 42 (12) ◽  
pp. 8032-8041 ◽  
Author(s):  
Tapas K. Das ◽  
Seemita Banerjee ◽  
M. Pandey ◽  
B. Vishwanadh ◽  
R.J. Kshirsagar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Functional Groups ◽  
Hydrogen Adsorption ◽  
Adsorption Properties ◽  
Surface Functional Groups ◽  
Reduced Graphene ◽  
Effect Of Surface

scholarly journals Selective adsorption and decomposition of pollutants using RGO-TiO2 with optimized surface functional groups

RSC Advances ◽  
2018 ◽  
Vol 8 (56) ◽  
pp. 31996-32002 ◽  
Author(s):  
Yunfei Sun ◽  
Yanfeng He ◽  
Bo Tang ◽  
Zhengtian Wu ◽  
Chongben Tao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Functional Groups ◽  
Selective Adsorption ◽  
Surface Functional Groups ◽  
Reduced Graphene

Reduced graphene oxide (RGO) samples with optimized types of surface functional groups were hybridized with TiO2 to achieve the selective adsorption and removal of various pollutants.

scholarly journals Functionalized Reduced Graphene Oxide Thin Films for Ultrahigh CO2 Gas Sensing Performance at Room Temperature

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 623
Author(s):  
Monika Gupta ◽  
Huzein Fahmi Hawari ◽  
Pradeep Kumar ◽  
Zainal Arif Burhanudin ◽  
Nelson Tansu
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Functional Groups ◽  
Recovery Time ◽  
Room Temperature ◽  
Co2 Gas ◽  
Reduced Graphene ◽  
Response And Recovery

The demand for carbon dioxide (CO2) gas detection is increasing nowadays. However, its fast detection at room temperature (RT) is a major challenge. Graphene is found to be the most promising sensing material for RT detection, owing to its high surface area and electrical conductivity. In this work, we report a highly edge functionalized chemically synthesized reduced graphene oxide (rGO) thin films to achieve fast sensing response for CO2 gas at room temperature. The high amount of edge functional groups is prominent for the sorption of CO2 molecules. Initially, rGO is synthesized by reduction of GO using ascorbic acid (AA) as a reducing agent. Three different concentrations of rGO are prepared using three AA concentrations (25, 50, and 100 mg) to optimize the material properties such as functional groups and conductivity. Thin films of three different AA reduced rGO suspensions (AArGO25, AArGO50, AArGO100) are developed and later analyzed using standard FTIR, XRD, Raman, XPS, TEM, SEM, and four-point probe measurement techniques. We find that the highest edge functionality is achieved by the AArGO25 sample with a conductivity of ~1389 S/cm. The functionalized AArGO25 gas sensor shows recordable high sensing properties (response and recovery time) with good repeatability for CO2 at room temperature at 500 ppm and 50 ppm. Short response and recovery time of ~26 s and ~10 s, respectively, are achieved for 500 ppm CO2 gas with the sensitivity of ~50 Hz/µg. We believe that a highly functionalized AArGO CO2 gas sensor could be applicable for enhanced oil recovery, industrial and domestic safety applications.

scholarly journals Fabrication of macroporous reduced graphene oxide composite aerogels reinforced with chitosan for high bilirubin adsorption

RSC Advances ◽  
2018 ◽  
Vol 8 (15) ◽  
pp. 8338-8348 ◽  
Author(s):  
Zhentao Li ◽  
Xi Song ◽  
Siyuan Cui ◽  
Yanpeng Jiao ◽  
Changren Zhou
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Adsorption Properties ◽  
Oxide Composite ◽  
Reduced Graphene ◽  
Composite Aerogels ◽  
Bilirubin Adsorption ◽  
High Bilirubin

Chitosan reinforced macroporous reduced graphene oxide composite aerogels were fabricated with high bilirubin adsorption properties.

Modulation of oxygen functional groups and their influence on the supercapacitor performance of reduced graphene oxide

2020 ◽  
Vol 44 (44) ◽  
pp. 19022-19027
Author(s):  
Zegao Wang ◽  
Yuqing Wang ◽  
Xin Hao ◽  
Jingbo Liu ◽  
Yuanfu Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
Functional Groups ◽  
Oxygen Functional Groups ◽  
Reduced Graphene ◽  
Supercapacitor Performance

Through tuning the oxygen function groups, it was demonstrated that the specific capacitance of reduced graphene oxide can increase from 136 F g−1 to 182 F g−1.

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