Monodispersed PtNi nanoparticles deposited on diamine-alkalized graphene for highly efficient dehydrogenation of hydrous hydrazine at room temperature

2015 ◽  
Vol 3 (46) ◽  
pp. 23090-23094 ◽  
Author(s):  
Fu-Zhan Song ◽  
Qi-Long Zhu ◽  
Qiang Xu
Keyword(s):  
Graphene Oxide ◽  
High Activity ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Catalytic Dehydrogenation ◽  
Turnover Frequency ◽  
Highly Efficient ◽  
Reduced Graphene

Monodispersed PtNi nanoparticles (diameter ≤ 2.5 nm) were successfully immobilized on diamine-alkalized reduced graphene oxide, which exhibited a high activity (turnover frequency, 903 h−1 at 303 K) for the catalytic dehydrogenation of hydrous hydrazine.

scholarly journals Synergistic absorbents based on SnFe2O4@ZnO nanoparticles decorated with reduced graphene oxide for highly efficient dye adsorption at room temperature

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17840-17848
Author(s):  
Pawan Kumar Singh ◽  
Kuan-Yi Kuo ◽  
Jui-Teng Lee ◽  
Po-Hsuan Hsiao ◽  
Joon Ching Juan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Zno Nanoparticles ◽  
Room Temperature ◽  
Dye Adsorption ◽  
Highly Efficient ◽  
Reduced Graphene ◽  
Magnetically Separable

Magnetically separable SnFe2O4/ZnO nanoparticles decorated on rGO sheets with remarkable dye adsorption capabilities are demonstrated.

Synthesis of Sn4P3/reduced graphene oxide nanocomposites as highly efficient electrocatalysts for CO2 reduction

2020 ◽  
Vol 22 (20) ◽  
pp. 6804-6808
Author(s):  
Lu Lu ◽  
Weiwei Guo ◽  
Chunjun Chen ◽  
Qinggong Zhu ◽  
Jun Ma ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Activity ◽  
Reduced Graphene Oxide ◽  
Co2 Reduction ◽  
Highly Efficient ◽  
Reduced Graphene

Sn4P3/reduced graphene oxide nanocomposites exhibit high activity and selectivity for CO2 electroreduction to CO.

Polyaniline-Reduced Graphene Oxide Nanosheets for Room Temperature NH3 Detection

2021 ◽  
Author(s):  
Junyu Chang ◽  
Xiaobo Zhang ◽  
Zhenming Wang ◽  
Chunsheng Li ◽  
Qi Hu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Graphene Oxide Nanosheets ◽  
Reduced Graphene

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 Enhanced electrochemical activities of morphologically tuned MnFe2O4 nanoneedles and nanoparticles integrated on reduced graphene oxide for highly efficient supercapacitor electrodes

2021 ◽  
Author(s):  
R Rajalakshmi ◽  
Remya K. P. ◽  
Viswanathan Chinnuswamy ◽  
Nagamony Ponpandian
Keyword(s):  
Graphene Oxide ◽  
Physicochemical Properties ◽  
Reduced Graphene Oxide ◽  
Two Dimensional ◽  
2D Material ◽  
Highly Efficient ◽  
Reduced Graphene

The morphology of a nanoparticle strongly controls the path ofelectronic interaction, which directly correlates to the physicochemical properties and also the electrochemical comportment. Conjoining it with a two-dimensional (2D) material...

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