scholarly journals Pyridine-based functionalized graphene oxides as a new class of corrosion inhibitors for mild steel: an experimental and DFT approach

RSC Advances ◽  
2017 ◽  
Vol 7 (62) ◽  
pp. 39063-39074 ◽  
Author(s):  
Rajeev Kumar Gupta ◽  
Manisha Malviya ◽  
Chandrabhan Verma ◽  
Neeraj K. Gupta ◽  
M. A. Quraishi
Keyword(s):  
Graphene Oxide ◽  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibitors ◽  
Functionalized Graphene ◽  
Graphene Oxides ◽  
Functionalized Graphene Oxide ◽  
New Class

Two functionalized graphene oxides, diazo pyridine functionalized graphene oxide and diamino pyridine functionalized graphene oxide, were synthesised and evaluated as corrosion inhibitors on mild steel in 1 M hydrochloric acid.

Diethylenetriamine functionalized graphene oxide as a novel corrosion inhibitor for mild steel in hydrochloric acid solutions

2019 ◽  
Vol 43 (5) ◽  
pp. 2328-2337 ◽  
Author(s):  
Nadeem Baig ◽  
D. S. Chauhan ◽  
Tawfik A. Saleh ◽  
M. A. Quraishi
Keyword(s):  
Graphene Oxide ◽  
Hydrochloric Acid ◽  
Mild Steel ◽  
Corrosion Inhibitor ◽  
Acid Solutions ◽  
Functionalized Graphene ◽  
Surface Studies ◽  
Functionalized Graphene Oxide ◽  
Hydrochloric Acid Solutions

Electrochemical and surface studies of diethylenetriamine functionalized graphene oxide as a novel corrosion inhibitor for mild steel in hydrochloric acid solutions.

Aminobenzoic acid functionalized graphene oxide as environment-friendly corrosion inhibitors for Q235 steel in HCl solution: experimental and DFT studies

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Baoguang Ma ◽  
Cheng Chen ◽  
Xiaojun Xie ◽  
Yanhui Chen ◽  
Qiuyu Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Corrosion Inhibitors ◽  
Chemical Calculation ◽  
Functionalized Graphene ◽  
Aminobenzoic Acid ◽  
Environment Friendly ◽  
Functionalized Graphene Oxide ◽  
Content Type ◽  
Q235 Steel ◽  
Environmental Friendly

Purpose The purpose of this study is to provide effective and environmental-friendly corrosion inhibitors derived from graphene oxide for Q235 steel. Design/methodology/approach Nontoxic and environment-friendly 4-aminobenzoic acid was used to functionalize graphene oxide via amidation and diazotization. The obtained amidation 4-aminobenzoic acid functionalized graphene oxide (PAGO) and diazotization 4-aminobenzoic acid functionalized graphene oxide (PDGO) were characterized by FTIR, Raman and TEM, while the inhibition efficiencies were analyzed by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP). Furthermore, theoretical inhibition efficiencies were investigated by density functional theory (DFT) approach. Findings At a concentration of 40 ppm, the maximum inhibition efficiency of PAGO and PDGO were 97.90% and 96.72% in EIS measurement, respectively, which were in accordance with PDP data. Moreover, experimental results were supported by DFT-based quantum chemical calculation. Originality/value Environmental-friendly PAGO and PDGO were synthesized successfully. The synthetic inhibitors exhibited excellent inhibition efficiencies in EIS and PDP measurements. Furthermore, a computational study using DFT supported the trend that PAGO was better inhibitor than PDGO.

Calixarene-functionalized graphene oxide composites fixed on glassy carbon electrodes for electrochemical detection

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 91910-91920 ◽  
Author(s):  
Peng Zhang ◽  
Yaling Wang ◽  
Dongxiang Zhang ◽  
Cong Liu ◽  
Die Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Composite Materials ◽  
Electrochemical Detection ◽  
Carbon Electrodes ◽  
Functionalized Graphene ◽  
Graphene Oxides ◽  
Covalent Functionalization ◽  
Functionalized Graphene Oxide ◽  
Glassy Carbon Electrodes ◽  
Oxide Composites

Four composite materials were prepared by grafting calixarene derivatives onto the surfaces of graphene oxide (GO) via covalent functionalization to yield covalently functionalized graphene oxides (CFGOs).

Effect of molecular chain length on the properties of amine-functionalized graphene oxide nanosheets/epoxy resins nanocomposites

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 45987-45995 ◽  
Author(s):  
Fengdan Liu ◽  
Ling Wu ◽  
Yanjie Song ◽  
Wenguang Xia ◽  
Kunkun Guo
Keyword(s):  
Graphene Oxide ◽  
Chain Length ◽  
Epoxy Resins ◽  
Functionalized Graphene ◽  
Graphene Oxide Nanosheets ◽  
Graphene Oxides ◽  
Functionalized Graphene Oxide ◽  
Molecular Weights ◽  
Amine Functionalized ◽  
Linear Poly

Amine-functionalized graphene oxide nanosheets were prepared by linear poly(oxyalkylene)amines with two different molecular weights, 400 and 2000 (D400 and D2000), attached onto the surface of graphene oxides.

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