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The microwave adsorption behavior and microwave-assisted heteroatoms doping of graphene-based nano-carbon materials.

Tang P, Hu G, Gao Y, Li W, Yao S, Liu Z, Ma D - Sci Rep (2014)

Bottom Line: Pure or doped graphene are prepared in the time of minutes and a thermal deoxygenization reduction mechanism is proposed to understand their microwave adsorption behaviors.These carbon materials are excellent catalysts in the reduction of nitrobenzene.The defects are believed to play an important role in the catalytic performance.

View Article: PubMed Central - PubMed

Affiliation: Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China.

ABSTRACT
Microwave-assisted heating method is used to treat graphite oxide (GO), pyrolytic graphene oxide (PGO) and hydrogen-reduced pyrolytic graphene oxide (HPGO). Pure or doped graphene are prepared in the time of minutes and a thermal deoxygenization reduction mechanism is proposed to understand their microwave adsorption behaviors. These carbon materials are excellent catalysts in the reduction of nitrobenzene. The defects are believed to play an important role in the catalytic performance.

No MeSH data available.


Schematic diagram of the wave-adsorption/light-emission behaviors of the graphene-based carbon materials under microwave irradiation.(black color for the carbon substrate and the yellowish color for the light-emission areas).
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f1: Schematic diagram of the wave-adsorption/light-emission behaviors of the graphene-based carbon materials under microwave irradiation.(black color for the carbon substrate and the yellowish color for the light-emission areas).

Mentions: Various kinds of graphene-based nano-carbon materials (GO, PGO and HPGO) were treated by microwave irradiation. Pure graphene materials with excellent crystallinity could be obtained under microwave irradiation for just 1 min and their microwave adsorption behaviors (Figure 1) are found to be in line with their electrical conductivities (Supplementary Figure S1). The data of XRD, Raman (Figure 2)and EA (Table 1) illustrate that their composition, structures (Figure 3) and electrical conductivity change under microwave irradiations. A thermal deoxygenization reduction mechanism is proposed to understand their chances under microwave irradiations.


The microwave adsorption behavior and microwave-assisted heteroatoms doping of graphene-based nano-carbon materials.

Tang P, Hu G, Gao Y, Li W, Yao S, Liu Z, Ma D - Sci Rep (2014)

Schematic diagram of the wave-adsorption/light-emission behaviors of the graphene-based carbon materials under microwave irradiation.(black color for the carbon substrate and the yellowish color for the light-emission areas).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4127501&req=5

f1: Schematic diagram of the wave-adsorption/light-emission behaviors of the graphene-based carbon materials under microwave irradiation.(black color for the carbon substrate and the yellowish color for the light-emission areas).
Mentions: Various kinds of graphene-based nano-carbon materials (GO, PGO and HPGO) were treated by microwave irradiation. Pure graphene materials with excellent crystallinity could be obtained under microwave irradiation for just 1 min and their microwave adsorption behaviors (Figure 1) are found to be in line with their electrical conductivities (Supplementary Figure S1). The data of XRD, Raman (Figure 2)and EA (Table 1) illustrate that their composition, structures (Figure 3) and electrical conductivity change under microwave irradiations. A thermal deoxygenization reduction mechanism is proposed to understand their chances under microwave irradiations.

Bottom Line: Pure or doped graphene are prepared in the time of minutes and a thermal deoxygenization reduction mechanism is proposed to understand their microwave adsorption behaviors.These carbon materials are excellent catalysts in the reduction of nitrobenzene.The defects are believed to play an important role in the catalytic performance.

View Article: PubMed Central - PubMed

Affiliation: Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China.

ABSTRACT
Microwave-assisted heating method is used to treat graphite oxide (GO), pyrolytic graphene oxide (PGO) and hydrogen-reduced pyrolytic graphene oxide (HPGO). Pure or doped graphene are prepared in the time of minutes and a thermal deoxygenization reduction mechanism is proposed to understand their microwave adsorption behaviors. These carbon materials are excellent catalysts in the reduction of nitrobenzene. The defects are believed to play an important role in the catalytic performance.

No MeSH data available.