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 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.

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.

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 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

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.

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