Self-assembled reduced graphene hydrogels by facile chemical reduction using acetaldehyde oxime for electrode materials in supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48276-48282 ◽  
Author(s):  
Man Jiang ◽  
Jing-Li Zhang ◽  
Fei Qiao ◽  
Rui-Ying Zhang ◽  
Ling-Bao Xing ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrode Materials ◽  
Chemical Reduction ◽  
Three Dimensional ◽  
Doping Agent ◽  
Reduced Graphene ◽  
Self Assembled

Self-assembled three-dimensional (3D) reduced graphene hydrogels (RGHs) were fabricated by the facile chemical reduction of a graphene oxide (GO) dispersion with ammonia using acetaldehyde oxime as reducing and doping agent.

In Situ Synthesis of Three-Dimensional Self-Assembled Metal Oxide–Reduced Graphene Oxide Architecture

2014 ◽  
Vol 26 (16) ◽  
pp. 4838-4843 ◽  
Author(s):  
Hyun-Kyung Kim ◽  
Sang-Hoon Park ◽  
Seung-Beom Yoon ◽  
Chang-Wook Lee ◽  
Jun Hui Jeong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
In Situ Synthesis ◽  
Reduced Graphene ◽  
Self Assembled

Intercalated reduced graphene oxide and its content effect on the supercapacitance performance of the three dimensional flower-like β-Ni(OH)2 architecture

2017 ◽  
Vol 41 (18) ◽  
pp. 10467-10475 ◽  
Author(s):  
Nazish Parveen ◽  
Sajid Ali Ansari ◽  
S. G. Ansari ◽  
H. Fouad ◽  
Moo Hwan Cho
Keyword(s):  
Graphene Oxide ◽  
Metal Oxides ◽  
Reduced Graphene Oxide ◽  
Graphene Sheet ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Highly Efficient ◽  
Reduced Graphene ◽  
Controlled Morphology ◽  
Supercapacitor Applications

Anchoring of three dimensional (3D) metal oxides with a controlled morphology on a reduced graphene sheet (rGO) is a promising and challenging route towards the development of highly efficient electrode materials for supercapacitor applications.

scholarly journals Facile Fabrication of 3D Graphene–Silica Hydrogel Composite for Enhanced Removal of Mercury Ions

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 314 ◽  
Author(s):  
Jinrong Lu ◽  
Xiaonan Wu ◽  
Yao Li ◽  
Yinghua Liang ◽  
Wenquan Cui
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Silica Gel ◽  
Chemical Reduction ◽  
Three Dimensional ◽  
Sem Analysis ◽  
Mechanism Study ◽  
Modified Silica Gel ◽  
3D Graphene ◽  
Reduced Graphene

Adsorption is a highly promising and widely used approach to remove Hg(II) ions from contaminated water. The key to this technology is exploring the effective adsorbent. The three-dimensional (3D) graphene as reduced graphene oxide hydrogel (rGH)-encapsulated silica gel (SG-PEI/rGH) was prepared by a moderate chemical reduction strategy using ascorbic acid. This composite structure was characterized by FTIR, XRD, and SEM analysis and used as adsorbents for Hg(II) ions. Its adsorption capacity toward Hg(II) ions was 266 mg/g and increased about 32% compared with the silica gel because of reduced graphene oxide hydrogel (rGH). Mechanism study showed that the high adsorption ability was due to the formation of an N–Hg complex with multi-amino groups on the surface of polyethyleneimine-modified silica gel (SG-PEI) and the rapid diffusion of adsorbed ions attributed to the rGH network structure. This composite SG-PEI/rGH would be a promising material for the removal of Hg(II) ions.

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