Interfacial polarizations induced by incorporating traditional perovskites into reduced graphene oxide (RGO) for strong microwave response

2019 ◽  
Vol 48 (7) ◽  
pp. 2359-2366 ◽  
Author(s):  
Sisi Dai ◽  
Bin Quan ◽  
Baoshan Zhang ◽  
Xiaohui Liang ◽  
Guangbin Ji
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Impedance Matching ◽  
Microwave Response ◽  
Simple Hydrothermal Method ◽  
High Impedance ◽  
Reduced Graphene ◽  
Microwave Absorbing

The as-prepared La0.7Sr0.3MnO3/RGO nanocomposites were synthesized via a simple hydrothermal method to provide excellent microwave absorbing performance resulting from good electrical conductivity and high impedance matching.

scholarly journals Synthesis of novel cyclodextrin-modified reduced graphene oxide composites by a simple hydrothermal method

RSC Advances ◽  
2018 ◽  
Vol 8 (66) ◽  
pp. 37623-37630 ◽  
Author(s):  
Qingli Huang ◽  
MingYan Li ◽  
LiLi Wang ◽  
Honghua Yuan ◽  
Meng Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Cancer Therapy ◽  
Drug Release ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Sustained Drug Release ◽  
Simple Hydrothermal Method ◽  
Ph Response ◽  
Reduced Graphene ◽  
Oxide Composites

The rGO@CD@PEG@FA nanocomposite showed the stimulative effect of heat, pH response, and sustained drug release for cancer therapy

Nitrogen-doped reduced graphene oxide and aniline based redox additive electrolyte for a flexible supercapacitor

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67898-67909 ◽  
Author(s):  
K. Vijaya Sankar ◽  
R. Kalai Selvan ◽  
R. Hari Vignesh ◽  
Y. S. Lee
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Flexible Structure ◽  
Simple Hydrothermal Method ◽  
Nitrogen Doped ◽  
Flexible Supercapacitor ◽  
Reduced Graphene

Nitrogen-doped reduced graphene oxide (N-rGO) with a flexible structure was prepared by simple hydrothermal method. The N-rGO flexible supercapacitor fabricated and improved the performance using aniline as redox additive.

Nb2O5/graphene nanocomposites for electrochemical energy storage

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 59997-60004 ◽  
Author(s):  
Paulraj Arunkumar ◽  
Ajithan G. Ashish ◽  
Binson Babu ◽  
Som Sarang ◽  
Abhin Suresh ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Electrochemical Energy Storage ◽  
Graphene Nanocomposites ◽  
Simple Hydrothermal Method ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets ◽  
Electrochemical Energy

Here we report the synthesis of Nb2O5/graphene nanocomposites, through a simple hydrothermal method, with Nb2O5 nanoparticles anchored on reduced graphene oxide sheets.

Highly selective NO2 sensor at room temperature based on nanocomposites of hierarchical nanosphere-like α-Fe2O3 and reduced graphene oxide

RSC Advances ◽  
2014 ◽  
Vol 4 (101) ◽  
pp. 57493-57500 ◽  
Author(s):  
Ying-li Dong ◽  
Xian-fa Zhang ◽  
Xiao-li Cheng ◽  
Ying-ming Xu ◽  
Shan Gao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Simple Hydrothermal Method ◽  
Reduced Graphene ◽  
No2 Sensor

A highly selective NO2 sensor was developed, which works at room temperature, based on hierarchical nanosphere-like α-Fe2O3 modified rGO nanocomposites using a simple hydrothermal method without any surfactant or template.

scholarly journals Graphene Oxide: A Smart (Starting) Material for Natural Methylxanthines Adsorption and Detection

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4247 ◽  
Author(s):  
Rita Petrucci ◽  
Isabella Chiarotto ◽  
Leonardo Mattiello ◽  
Daniele Passeri ◽  
Marco Rossi ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Nucleic Acids ◽  
Reduced Graphene Oxide ◽  
Electrochemical Sensors ◽  
Enzymatic Digestion ◽  
Biologically Active ◽  
Polar Solvents ◽  
Dna And Rna ◽  
Reduced Graphene

Natural methylxanthines, caffeine, theophylline and theobromine, are widespread biologically active alkaloids in human nutrition, found mainly in beverages (coffee, tea, cocoa, energy drinks, etc.). Their detection is thus of extreme importance, and many studies are devoted to this topic. During the last decade, graphene oxide (GO) and reduced graphene oxide (RGO) gained popularity as constituents of sensors (chemical, electrochemical and biosensors) for methylxanthines. The main advantages of GO and RGO with respect to graphene are the easiness and cheapness of synthesis, the notable higher solubility in polar solvents (water, among others), and the higher reactivity towards these targets (mainly due to – interactions); one of the main disadvantages is the lower electrical conductivity, especially when using them in electrochemical sensors. Nonetheless, their use in sensors is becoming more and more common, with the obtainment of very good results in terms of selectivity and sensitivity (up to 5.4 × 10−10 mol L−1 and 1.8 × 10−9 mol L−1 for caffeine and theophylline, respectively). Moreover, the ability of GO to protect DNA and RNA from enzymatic digestion renders it one of the best candidates for biosensors based on these nucleic acids. This is an up-to-date review of the use of GO and RGO in sensors.

scholarly journals Characteristics of hydroxyapatite-reduced graphene oxide composite powders synthesized via hydrothermal method in the absence and presence of diethylene glycol

Open Ceramics ◽  
2021 ◽  
Vol 5 ◽  
pp. 100067
Author(s):  
Hassan Nosrati ◽  
Rasoul Sarraf-Mamoory ◽  
Maria Canillas Perez ◽  
Dang Quang Svend Le ◽  
Reza Zolfaghari Emameh ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Diethylene Glycol ◽  
Composite Powders ◽  
Oxide Composite ◽  
Reduced Graphene

Chemically reduced graphene oxide-coated knitted fabric imparted conductivity and outstanding hydrophobicity

2021 ◽  
pp. 004051752199547
Author(s):  
Min Hou ◽  
Xinghua Hong ◽  
Yanjun Tang ◽  
Zimin Jin ◽  
Chengyan Zhu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Chemical Reduction ◽  
Knitted Fabric ◽  
Mesh Structure ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Modified Hummers Method

Functionalized knitted fabric, as a kind of flexible, wearable, and waterproof material capable of conductivity, sensitivity and outstanding hydrophobicity, is valuable for multi-field applications. Herein, the reduced graphene oxide (RGO)-coated knitted fabric (polyester/spandex blended) is prepared, which involves the use of graphite oxide (GO) by modified Hummers method and in-situ chemical reduction with hydrazine hydrate. The treated fabric exhibits a high electrical conductivity (202.09 S/cm) and an outstanding hydrophobicity (140°). The outstanding hydrophobicity is associated with the morphology of the fabric and fiber with reference to pseudo-infiltration. These properties can withstand repeated bending and washing without serious deterioration, maintaining good electrical conductivity (35.70 S/cm) and contact angle (119.39°) after eight standard washing cycles. The material, which has RGO architecture and continuous loop mesh structure, can find wide use in smart garment applications.

Study of Electrical Conductivity of Pyrrole-Reduced Graphene Oxide Pellet

2021 ◽  
Author(s):  
Sara Maira Mohd Hizam ◽  
Nurul Izza Soaid ◽  
Mohamed Shuaib Mohamed Saheed ◽  
Norani Muti Mohamed ◽  
Chong Fai Kait
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene
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