Precise control of the interlayer spacing between graphene sheets by hydrated cations

2019 ◽  
Vol 21 (14) ◽  
pp. 7623-7629 ◽  
Author(s):  
Yizhou Yang ◽  
Liuhua Mu ◽  
Liang Chen ◽  
Guosheng Shi ◽  
Haiping Fang
Keyword(s):  
Graphene Oxide ◽  
Interlayer Spacing ◽  
Graphene Sheets ◽  
Precise Control ◽  
Dft Computations ◽  
Graphene Oxide Sheets

Based on DFT computations, we show that different hydrated cations can precisely control the interlayer spacings between graphene sheets, which are smaller than that between graphene oxide sheets, indicating an ion sieving.

scholarly journals Amino-functionalization on graphene oxide sheets using an atomic layer amidation technique

2020 ◽  
Vol 8 (2) ◽  
pp. 700-705 ◽  
Author(s):  
Siyong Gu ◽  
Chien-Te Hsieh ◽  
Bikash Chandra Mallick ◽  
Yasser Ashraf Gandomi ◽  
Jeng-Kuei Chang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Atomic Layer ◽  
Graphene Sheets ◽  
Amino Functionalization ◽  
Nitrogen Functionalization ◽  
Graphene Oxide Sheets

Nitrogen functionalization on graphene sheets has solely been demonstrated with a stepwise amidation implementation within the literature.

An effective non-covalent grafting approach to functionalize individually dispersed reduced graphene oxide sheets with high grafting density, solubility and electrical conductivity

Nanoscale ◽  
2015 ◽  
Vol 7 (8) ◽  
pp. 3548-3557 ◽  
Author(s):  
Hao Wang ◽  
Shu-Guang Bi ◽  
Yun-Sheng Ye ◽  
Yang Xue ◽  
Xiao-Lin Xie ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Graphene Sheets ◽  
Grafting Density ◽  
Reduced Graphene ◽  
Covalent Grafting ◽  
Potential Applications ◽  
Graphene Oxide Sheets

Polymer-functionalized reduced graphene oxide (polymer-FG), produced as individually dispersed graphene sheets, offers new possibilities for the production of nanomaterials that are useful for a broad range of potential applications.

Self-assembly of Au nanoparticles on graphene sheets as a catalyst with controlled grafting density and high reusability

RSC Advances ◽  
2014 ◽  
Vol 4 (106) ◽  
pp. 61823-61830 ◽  
Author(s):  
Haiqing Yao ◽  
Tsao-Cheng Huang ◽  
Hung-Jue Sue
Keyword(s):  
Graphene Oxide ◽  
Self Assembly ◽  
Au Nanoparticles ◽  
Graphene Sheets ◽  
Au Nps ◽  
Grafting Density ◽  
Graphene Oxide Sheets

Novel catalysts based on self-assembly of Au NPs on graphene oxide sheets through silane functionalization were reported.

Electrocatalytic activity of metalloporphyrins grown in situ on graphene sheets toward oxygen reduction reaction in an alkaline medium

RSC Advances ◽  
2014 ◽  
Vol 4 (51) ◽  
pp. 26653-26661 ◽  
Author(s):  
Liqing Jiang ◽  
Meng Li ◽  
Lin Lin ◽  
Yongfeng Li ◽  
Xingquan He ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrocatalytic Activity ◽  
Solvothermal Synthesis ◽  
Synthesis Method ◽  
Reduction Reaction ◽  
Graphene Sheets ◽  
Noble Metal Catalysts ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets

A series of novel non-noble-metal catalysts for ORR, based on metalloporphyrins grown on poly(sodium-p-styrenesulfonate) modified reduced graphene oxide sheets, have been successfully fabricated using an in situ solvothermal synthesis method.

scholarly journals Linear control of the oxidation level on graphene oxide sheets using the cyclic atomic layer reduction technique

Nanoscale ◽  
2019 ◽  
Vol 11 (16) ◽  
pp. 7833-7838 ◽  
Author(s):  
Bikash Chandra Mallick ◽  
Chien-Te Hsieh ◽  
Ken-Ming Yin ◽  
Jianlin Li ◽  
Yasser Ashraf Gandomi
Keyword(s):  
Graphene Oxide ◽  
Atomic Layer ◽  
Reduction Technique ◽  
Linear Control ◽  
Precise Control ◽  
Oxidation Level ◽  
Graphene Oxide Sheets

Precise control of the oxidation level on graphene oxide (GO) sheets is still a big challenge.

2D graphene oxide channel for water transport

2018 ◽  
Vol 209 ◽  
pp. 329-340 ◽  
Author(s):  
Baoxia Mi ◽  
Sunxiang Zheng ◽  
Qingsong Tu
Keyword(s):  
Graphene Oxide ◽  
Water Transport ◽  
Interlayer Spacing ◽  
Precise Control

Proper crosslinking and reduction can effectively prevent graphene oxide from swelling, thus enabling the precise control of interlayer spacing.

Reducing Li-diffusion pathways via “adherence” of ultra-small nanocrystals of LiFePO4 on few-layer nanoporous holey-graphene sheets for achieving high rate capability

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89328-89337 ◽  
Author(s):  
Dipak Dutta ◽  
A. L. Santhosha ◽  
A. K. Sood ◽  
Aninda J. Bhattacharyya
Keyword(s):  
Graphene Oxide ◽  
Rate Capability ◽  
High Rate ◽  
Graphene Sheets ◽  
High Rate Capability ◽  
Graphene Oxide Sheets

A unique 3D configuration comprising ultra-small LFP particles “adhered” to few-layer reduced holey-graphene oxide sheets allows Li+-ions to traverse shorter non-tortuous pathways leading to excellent battery performance.

scholarly journals Free-standing reduced graphene oxide (rGO) membrane for salt-rejecting solar desalination via size effect

Nanophotonics ◽  
2020 ◽  
Vol 9 (15) ◽  
pp. 4601-4608 ◽  
Author(s):  
Pengyu Zhuang ◽  
Hanyu Fu ◽  
Ning Xu ◽  
Bo Li ◽  
Jun Xu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Conversion Efficiency ◽  
High Salinity ◽  
Interlayer Spacing ◽  
Structural Instability ◽  
Solar Thermal ◽  
Free Standing ◽  
Solar Desalination ◽  
Reduced Graphene

AbstractInterfacial solar vapor generation has revived the solar-thermal-based desalination due to its high conversion efficiency of solar energy. However, most solar evaporators reported so far suffer from severe salt-clogging problems during solar desalination, leading to performance degradation and structural instability. Here, we demonstrate a free-standing salt-rejecting reduced graphene oxide (rGO) membrane serving as an efficient, stable, and antisalt-fouling solar evaporator. The evaporation rate of the membrane reaches up to 1.27 kg m−2 h−1 (solar–thermal conversion efficiency ∼79%) under one sun, out of 3.5 wt% brine. More strikingly, due to the tailored narrow interlayer spacing, the rGO membrane can effectively reject ions, preventing salt accumulation even for high salinity brine (∼8 wt% concentration). With enabled salt-antifouling capability, flexibility, as well as stability, our rGO membrane serves as a promising solar evaporator for high salinity brine treatment.

Cross-linked graphene oxide sheets via modified extracted cellulose with high metal adsorption

2017 ◽  
Vol 172 ◽  
pp. 20-27 ◽  
Author(s):  
Amr A. Yakout ◽  
Ramadan H. El-Sokkary ◽  
Mohamed A. Shreadah ◽  
Omnia G. Abdel Hamid
Keyword(s):  
Graphene Oxide ◽  
Metal Adsorption ◽  
High Metal ◽  
Graphene Oxide Sheets
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