UV-Assisted Photoreduction of Graphene Oxide into Hydrogels: High-Rate Capacitive Performance in Supercapacitor
UV-Assisted Photoreduction of Graphene Oxide into Hydrogels: High-Rate Capacitive Performance in Supercapacitor
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紫外线辅助氧化石墨烯光还原成水凝胶:超级电容器的高速电容性能
DOI:
10.1021/jp508682g
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发表时间:
2014-11
期刊:
影响因子:
--
通讯作者:
Shuping Zhuo
中科院分区:
文献类型:
--
作者:
Ling-Bao Xing;Shu-Fen Hou;Jin Zhou;Shijiao Li;Tingting Zhu;Zhaohui Li;Weijiang Si;Shuping Zhuo
Self-assembly of graphene oxide (GO) into three-dimensional (3D) macroscopic architectures is an efficient strategy to exploit their inherent properties fully and restrict the formation of irreversible aggregates or restack into graphitic structure. In the present work, we first report a photoreduction method for producing the 3D photoreduced graphene hydrogels (PRGHs) through self-assembly of GO suspension under photochemical reduction of Hantzsch 1,4-dihydropyridine (HEH). The reduction of GO into PRGHs was confirmed by X-ray powder diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), elemental analysis, and Fourier transform infrared spectroscopy (FT-IR). It is observed that most of the oxygenated groups could be efficiently removed, and the sp2-like domains are restored as a result of photoreduction process. The 3D hierarchically porous structures of the resulting PRGHs have been intensively investigated by field emission scanning electron microscopy (FESEM), high-resolution ...
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