Fluorescent carbon quantum dots, capacitance and catalysis active porous carbon microspheres from beer

Fluorescent nitrogen containing carbon quantum dots (NCQDs) and porous carbon microspheres (PCMs) were simultaneously synthesized by a facile hydrothermal method using beer as precursor. The afforded NCQDs in supernatant exhibited strong blue fluorescence in aqueous solution and dry state under UV l...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2015-01, Vol.5 (60), p.48665-48674
Main Authors: Gao, Zhiyong, Wang, Xiaorui, Chang, Jiuli, Wu, Dapeng, Wang, Lan, Liu, Xiao, Xu, Fang, Guo, Yuming, Jiang, Kai
Format: Article
Language:English
Subjects:
Activation
Capacitance
Carbon
Catalysts
Electrodes
Fluorescence
Microspheres
Quantum dots
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Fluorescent nitrogen containing carbon quantum dots (NCQDs) and porous carbon microspheres (PCMs) were simultaneously synthesized by a facile hydrothermal method using beer as precursor. The afforded NCQDs in supernatant exhibited strong blue fluorescence in aqueous solution and dry state under UV light excitation, showing the huge potential as fluorescent dye. The PCMs in sediment showed great potential in supercapacitor electrode and catalyst for certain reaction. After ZnCl 2 activation at 900 °C, the obtained highly porous a-PCM 900 (denoted according to activation temperature) offered a high specific capacitance of 273.2 F g −1 at 1 A g −1 , excellent rate capability and cycling stability when employed as supercapacitor electrode. Moreover, a-PCM 900 could also serve as efficient non-noble metal catalyst for reduction conversion of 4-nitrophenol to 4-aminophenol by NaBH 4 with high activity and well reusability.
ISSN:2046-2069
2046-2069
DOI:10.1039/C5RA05365J