scholarly journals Applications of Al Modified Graphene on Gas Sensors and Hydrogen Storage

10.5772/15056 ◽  
2011 ◽  
Author(s):  
Zhimin Ao ◽  
Jack Yang ◽  
Sean Li
Keyword(s):  
Hydrogen Storage ◽  
Gas Sensors ◽  
Modified Graphene

scholarly journals Investigating the hydrogen storage capacity of surfactant modified graphene

2019 ◽  
Vol 158 ◽  
pp. 2112-2117
Author(s):  
Tao Xu ◽  
Jiayu Chen ◽  
Wenhui Yuan ◽  
Li Li ◽  
Yongjun Sun ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Storage Capacity ◽  
Hydrogen Storage Capacity ◽  
Modified Graphene

Chemically modified graphene films for high-performance optical NO2 sensors

The Analyst ◽  
2016 ◽  
Vol 141 (15) ◽  
pp. 4725-4732 ◽  
Author(s):  
Fei Xing ◽  
Shan Zhang ◽  
Yong Yang ◽  
Wenshuai Jiang ◽  
Zhibo Liu ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Gas Sensors ◽  
High Performance ◽  
Chemically Modified ◽  
Graphene Films ◽  
Accurate Detection ◽  
Modified Graphene

Various graphene-based gas sensors that operate based on the electrical properties of graphene have been developed for accurate detection of gas components.

The adsorption properties of CHx species on metal modified graphene

2018 ◽  
Vol 32 (12) ◽  
pp. 1850153
Author(s):  
Yanan Tang ◽  
Zigang Shen ◽  
Weiguang Chen ◽  
Dalei Zhu ◽  
Huadou Chai ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Magnetic Property ◽  
Gas Sensors ◽  
First Principles ◽  
Adsorption Properties ◽  
First Principles Calculations ◽  
Catalytic Materials ◽  
Metal Atoms ◽  
Modified Graphene

The adsorption geometries of CH[Formula: see text] species (x = 0, 1, 2, 3 and 4) on the metal embedded graphene (M–graphene) substrates and the change in electronic structure and magnetic property of systems are analyzed using the first-principles calculations. The calculated results show that the doped metal atoms can provide transferred electrons to neighboring carbon atoms at defective site and thus exhibit positive charges, as well as turning the adsorption sensing of M–graphene for detecting CH[Formula: see text] species. Compared with the adsorbed CH3, the adsorption of C, CH and CH2 species exhibit more stability ([Formula: see text]3.0 eV) on M–graphene. Besides, more stable C atom on M–graphene can effectively turn the magnetic property of systems as compared with other species. This result provides a useful reference for fabricating the functional metal–graphene complex as gas sensors and catalytic materials.

Facile synthesis of nanoplates and nanoflower shaped La2O3 nanostructures by Reflux Route

2015 ◽  
Vol 2 (2) ◽  
pp. 95-98
Author(s):  
Karthikeyan.S ◽  
Selvapandiyan.M
Keyword(s):  
Particle Size ◽  
Reaction Time ◽  
Hydrogen Storage ◽  
Band Gap ◽  
Gas Sensors ◽  
Lanthanum Oxide ◽  
Optical Band Gap ◽  
Wet Oxidation ◽  
Ftir Analysis ◽  
Facile Synthesis

Lanthanum Oxide (La2O3 ) nanoparticles are successfully synthesized by simple reflux method using starting materials Lanthanum Nitrate and Urea. Lanthanum Oxide (La2O3 ) have multiple applications such as gas sensors, catalyst, Hydrogen storage, catalysts, photocatalytic wet oxidation etc. This paper mainly focuses on the synthesis of Lanthanum Oxide (La2O3 ) nanoparticles at different precursor concentration at different reaction time on the properties of the synthesized Lanthanum Oxide (La2O3) nanoparticles can be explored. The synthesized samples were calcinated 500ºC for 1hr. The Lanthanum Oxide (La2O3) nanoparticles were investigated by XRD, FTIR, SEM, & UV studies. The morphology and particle size were analyzed by SEM. The structure of the crystallites was investigated using powder XRD technique. The FTIR analysis was used to examine the functional groups present in the synthesized Lanthanum Oxide (La2O3) nanoparticles. The optical band gap was calculated from the UV-Vis absorption spectra

Overview of nanophase metals and alloys for gas sensors, getters, and hydrogen storage

1996 ◽  
Vol 7 (1-2) ◽  
pp. 259-264 ◽  
Author(s):  
R.L. Holtz ◽  
V. Provenzano ◽  
M.A. Imam
Keyword(s):  
Hydrogen Storage ◽  
Gas Sensors ◽  
Metals And Alloys

scholarly journals Preparation and Hydrogen Storage Characteristics of Surfactant-Modified Graphene

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1220 ◽  
Author(s):  
Tao Xu ◽  
Jiayu Chen ◽  
Wenhui Yuan ◽  
Baoqing Li ◽  
Li Li ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Sodium Dodecyl ◽  
Reduction Process ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Analytical Models ◽  
Human Society ◽  
Hydrogen Energy ◽  
Modified Graphene

As the depletion of traditional fossil fuels and environmental pollution become serious problems for human society, researchers are actively looking for renewable energy sources. Since hydrogen energy is considered a clean, efficient, and renewable alternative energy source, it is regarded as the most promising option. In this context, how to store hydrogen safely and efficiently has become the major challenge that hinders the actual application. To fill this gap, this paper proposes to utilize surfactant-modified graphene for hydrogen storage. Through a modified Hummers’ method and ultrasonic stripping, this study proposes to prepare graphene from graphite oxide with NaBH4. The surfactant sodium dodecyl benzene sulfonate (SDBS) was used as a dispersant during the reduction process to produce dispersion-stabilized graphene suspensions. Then, to investigate the characteristics of the graphene suspensions, X-ray diffraction (XRD), SEM, TEM, Fourier transform infrared (FT-IR), Raman, XPS, TG, and N2 adsorption–desorption tests were conducted. Finally, analytical models for hydrogen adsorption were investigated with Langmuir and Freundlich fittings. The results show that the application of SDBS can effectively reduce the agglomeration among graphene monolayers and increase the specific surface area of graphene, and that the adsorption behavior is consistent with the Freundlich adsorption model, and is a physical process.

A comparative study on simple and practical chemical gas sensors from chemically modified graphene films

2018 ◽  
Vol 6 (1) ◽  
pp. 015607 ◽  
Author(s):  
Pawel S Wrobel ◽  
Michal D Wlodarski ◽  
Anna Jedrzejewska ◽  
Krzysztof M Placek ◽  
Rafal Szukiewicz ◽  
...  
Keyword(s):  
Comparative Study ◽  
Gas Sensors ◽  
Chemically Modified ◽  
Graphene Films ◽  
Modified Graphene

Recent advances in hydrogen storage using catalytically and chemically modified graphene nanocomposites

2017 ◽  
Vol 5 (44) ◽  
pp. 22897-22912 ◽  
Author(s):  
Rupali Nagar ◽  
Bhaghavathi P. Vinayan ◽  
Sai Smruti Samantaray ◽  
Sundara Ramaprabhu
Keyword(s):  
Hydrogen Storage ◽  
Future Outlook ◽  
Graphene Nanocomposites ◽  
Chemically Modified ◽  
Recent Advances ◽  
Modified Graphene

Recent advances in hydrogen storage using catalytically and chemically modified graphene nanocomposites are reviewed and its future outlook discussed.

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