Preparation and performance characteristics of reduced graphene oxide modified asphalt

2021 ◽  
Vol 11 (9) ◽  
pp. 1579-1586
Author(s):  
Zixuan Chen ◽  
Xudong Li ◽  
Jie Xie ◽  
Jianzhong Pei ◽  
Chengchao Wang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
High Temperature ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
Softening Point ◽  
Medium Temperature ◽  
Modified Asphalt ◽  
Reduced Graphene ◽  
And Performance

Reduced graphene oxide (RGO) was self-prepared by the oxidation reduction method and then characterized by several tests known as Fourier Transform Infrared Spectroscopy (FTIR) test, scanning electron microscopy (SEM) test, transmission electron microscopy (TEM) test, elemental analysis, raman measurement and thermogravimetry (TG) analysis to evaluate the properties of RGO. Additionally, RGO modified asphalt was prepared in this research to study the influence of RGO on matrix asphalt. Some of the normal performances of RGO modified asphalt were studied in terms of penetration at medium temperature, penetration index (PI), softening point, equivalent softening point T800 at high temperature and ductility at low temperature. Results showed that the prepared RGO has obvious layer structures and good properties and the performance of RGO modified asphalt at high temperature has increased significantly while the performance at low temperature decreased slightly. This research can provide an insight for the further study of RGO modified asphalt to enhance its road performance.

scholarly journals Novel Synthesis of Holey Reduced Graphene Oxide/Polystyrene (HRGO/PS) Nanocomposites by Microwave Irradiation as Anodes for High-Temperature Lithium-Ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2248 ◽  
Author(s):  
Yazeed Aldawsari ◽  
Yasmin Mussa ◽  
Faheem Ahmed ◽  
Muhammad Arsalan ◽  
Edreese Alsharaeh
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
High Temperature ◽  
Microwave Irradiation ◽  
Reduced Graphene Oxide ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Reduced Graphene ◽  
Discharge Capacities ◽  
Charge Discharge

To overcome the risk of exothermic lithium-ion battery overheating reactions, we fabricated a novel, high-temperature-stable anode material composed of holey reduced graphene oxide/polystyrene (HRGO/PS) nanocomposites synthesized through in situ bulk polymerization in the presence of HRGO via microwave irradiation. The HRGO/PS nanocomposites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, and electron microscopy analyses including field-emission scanning electron microscopy and transmission electron microscopy. All characterization studies demonstrated homogenous dispersion of HRGO in the PS matrix, which enhanced the thermal and electrical properties of the overall nanocomposites. These novel HRGO/PS nanocomposites exhibited excellent electrochemical responses, with reversible charge/discharge capacities of 92.1/92.78 mA·h/g at a current density of 500 mA/g with ~100% capacity retention and ~100% coulombic efficiency at room temperature. Furthermore, an examination of the electrochemical properties of these nanocomposites at 110 °C showed that HRGO/PS nanocomposites still displayed good charge/discharge capacities with stable cycle performances for 150 cycles.

scholarly journals Simple synthesis of ZnO nanoparticles on N-doped reduced graphene oxide for the electrocatalytic sensing of l-cysteine

RSC Advances ◽  
2017 ◽  
Vol 7 (56) ◽  
pp. 35004-35011 ◽  
Author(s):  
Suling Yang ◽  
Gang Li ◽  
Chen Qu ◽  
Guifang Wang ◽  
Dan Wang
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
Zno Nanoparticles ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Simple Synthesis ◽  
Zno Nanoparticle ◽  
Reduced Graphene ◽  
One Step

A new kind of ZnO nanoparticle/N-doped reduced graphene oxide nanocomposite (ZnONPs/N-rGO) was synthesized through a low temperature, low-cost and one step hydrothermal process.

scholarly journals P1GS.3 - A low Temperature H2 Gas Sensor Based on Pt-loaded Reduced Graphene Oxide/ZnO Nanocomposites

2018 ◽  
Author(s):  
Q. A. Drmosh ◽  
Z. H. Yamani ◽  
A. H. Y. Hendi ◽  
M. A. Gondal ◽  
R. A. Moqbel
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Reduced Graphene

Reduced Graphene Oxide Supported Molybdenum Oxide Hybrid Nanocomposites: High Performance Electrode Material for Supercapacitor and Photocatalytic Applications

2020 ◽  
Vol 20 (7) ◽  
pp. 4035-4046
Author(s):  
Rengasamy Dhanabal ◽  
Dhanasekaran Naveena ◽  
Sivan Velmathi ◽  
Arumugam Chandra Bose
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Photoelectron Spectroscopy ◽  
Diffuse Reflectance Spectroscopy ◽  
Hybrid Nanocomposites ◽  
X Ray ◽  
Supercapacitor Application ◽  
Quenching Effect ◽  
Reduced Graphene

Using a simple solution based synthesis route, hexagonal MoO3 (h-MoO3) nanorods on reduced graphene oxide (RGO) sheets were prepared. The structure and morphology of resulting RGO-MoO3 nanocomposite were characterized using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM). The optical property was studied using UV-Visible diffuse reflectance spectroscopy (UV-Vis DRS) and photoluminescence spectroscopy (PL). The RGO-MoO3 nanocomposites were used as an electrode for supercapacitor application and photocatalyst for photodegradation of methylene blue (MB) and rhodamine B (RhB) under visible light irradiation. We demonstrated that the RGO-MoO3 electrode is capable of delivering high specific capacitance of 134 F/g at current density of 1 A/g with outstanding cyclic stability for 2000 cycles. The RGOMoO3 photocatalyst degrades 95% of MB dye within 90 min, and a considerable recyclability up to 4 cycles was observed. The quenching effect of scavengers test confirms holes are main reactive species in the photocatalytic degradation of MB. Further, the charge transfer process between RGO and MoO3 was schematically demonstrated.

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