Polyethylenimine Applications in Carbon Dioxide Capture and Separation: From Theoretical Study to Experimental Work

Shen, Xinhua; Du, Hongbo; Mullins, Riley H.; Kommalapati, Raghava R.

doi:10.1002/ente.201600694

Cited by 126 publications

(84 citation statements)

References 147 publications

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“…synthesized 3D self‐assembly polyethyleneimine‐modified graphene oxide hydrogel (PEI‐GHs) and they investigated the adsorption performance of uranium using these hybrid materials . In this study, PEI was chosen because it could be easily grafted to the matrix since it has both secondary amines in the linear chain and primary secondary and tertiary amino groups in the branched amines . A possible mechanism involving PEI being either directly adsorbed on the GO surface or covalently functionalized by amide cross‐linking reaction between −COOH groups of GO and −NH 2 groups of PEI.…”

Section: D Graphene Nanosheets To 3d Gbmsmentioning

confidence: 99%

From 2D Graphene Nanosheets to 3D Graphene‐based Macrostructures

Firdaus

Berrada

Desforges

et al. 2020

Chemistry An Asian Journal

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The combination of exceptional functionalities offered by 3D graphene‐based macrostructures (GBMs) has attracted tremendous interest. 2D graphene nanosheets have a high chemical stability, high surface area and customizable porosity, which was extensively researched for a variety of applications including CO2 adsorption, water treatment, batteries, sensors, catalysis, etc. Recently, 3D GBMs have been successfully achieved through few approaches, including direct and non‐direct self‐assembly methods. In this review, the possible routes used to prepare both 2D graphene and interconnected 3D GBMs are described and analyzed regarding the involved chemistry of each 2D/3D graphene system. Improvement of the accessible surface of 3D GBMs where the interface exchanges are occurring is of great importance. A better control of the chemical mechanisms involved in the self‐assembly mechanism itself at the nanometer scale is certainly the key for a future research breakthrough regarding 3D GBMs.

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Section: D Graphene Nanosheets To 3d Gbmsmentioning

confidence: 99%

From 2D Graphene Nanosheets to 3D Graphene‐based Macrostructures

Firdaus

Berrada

Desforges

et al. 2020

Chemistry An Asian Journal

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“…On these bases, also taking into account the recent literature [ 47 ] highligting polyethylenimine as one of the greatest candidates for CO 2 sequestration processes, PEI-grafted MWCNTs 4 showing the best capture performance was selected as co-catalysts of titania in the CO 2 photoreduction.…”

Section: Resultsmentioning

confidence: 99%

TiO2@PEI-Grafted-MWCNTs Hybrids Nanocomposites Catalysts for CO2 Photoreduction

et al. 2018

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Anatase (TiO2) and multiwalled carbon nanotubes bearing polyethylenimine (PEI) anchored on their surface were hybridized in different proportions according to a sol-gel method. The resulting nanocomposites (TiO2@PEI-MWCNTs), characterized by BET, XRD, XPS, SEM, and UV techniques, were found efficient catalysts for CO2 photoreduction into formic and acetic acids in water suspension and under visible light irradiation. PEI-grafted nanotubes co-catalysts are believed to act as CO2 activators by forming a carbamate intermediate allowing to accomplish the first example in the literature of polyamines/nanotubes/TiO2 mediated CO2 photoreduction to carboxylic acids.

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“…Consequently, PEI molecule adsorbs on the steel surface physically and 100 μmol L −1 of PEI gives 88% corrosion inhibition efficiency. On the other hand, the PEI molecule has a CO 2 sorption affinity which influence the CO 2 molecule to interact with the PEI adsorbed www.nature.com/scientificreports www.nature.com/scientificreports/ molecule instead of the metal surface [78][79][80][81][82][83] . As a result, a dense protective layer formed over the metal surface in the presence of the PEI corrosion inhibitor and it is more compact than the corresponding layer with the CO 2 as seen in Fig.…”

Section: Thermodynamic Activation Parameters and Inhibition Mechanismmentioning

confidence: 99%

Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution

Shahzad

Sliem

Shakoor

et al. 2020

Sci Rep

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The present work studied the effect of temperature on the corrosion behavior of API X120 steel in a saline solution saturated with co 2 in absence and presence of polyethyleneimine (pei) as an environmentally safe green inhibitor. The effect of PEI on the corrosion behavior of API X120 steel was investigated using destructive and non-destructive electrochemical techniques. The overall results revealed that PEI significantly decreases the corrosion rate of API X120 steel with inhibition efficiency of 94% at a concentration of 100 μmol L −1. The adsorption isotherm, activation energy and the thermodynamic parameters were deduced from the electrochemical results. It is revealed that the adsorption of PEI on API X120 steel surface follows Langmuir adsorption isotherm adopting a Physichemisorption mechanism. Finally, the samples were characterized using scanning electron microscopy (SEM) and atomic force microscopy (AFM) techniques to elucidate the effect of aggressiveness of corrosive media on the surface morphology and the corrosion performance of API X120 steel. The surface topography result indicates that the API X120 steel interface in PEI presence is smoother than co 2 with cl − ions or cl − ions only. This is attributed to the compact protective film limits the aggressive ions transfer towards the metallic surface and reduces the corrosion rate. Moreover, PEI inhibition mechanism is based on its co 2 capturing ability and the PEI adsorption on the steel surface beside the siderite layer which give the PEI molecules the ability to reduce the scale formation and increase the corrosion protection due to capturing the CO 2 from the brine solution. High strength low alloy (HSLA) steels are widely finding its applications in oil & gas industry, thermal power plants and in aerospace industry etc. due to its improved mechanical properties, superior corrosion resistance and weldability when compared with plain carbon steel 1-4. Series of comparative studies have been focused on HSLA pipelines steels in order to understand the effect of alloying elements, heat treatments and other changeable factors on their mechanical properties and microstructure 5-8. it has been reported that the yield strength of the API X120 steel is in range 780-951 MPa based on the shape of the specimen. Moreover, the tensile strength is varied from 940 to 1023 MPa and the strength is more than X120 ksi and reaches to X120 grade according to the API standards 9-11. Corrosion is the major problem that compact the API X120 steel pipelines in the transportation of oil, gas. There are a myriad number of studies that investigate the influence of carbon dioxide with saline solution on the corrosion mechanism of different grades of steel pipelines employed in the pipeline applications 12,13. Additionally, it has been reported that the presence of carbonate ions in oilfield brine solution increases the corrosion rate of the pipelines 14-16. Several parameters have been noted for the corrosion of steel in CO 2 environment such as PH, temperature, CO 2 pres...

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Polyethylenimine Applications in Carbon Dioxide Capture and Separation: From Theoretical Study to Experimental Work

Cited by 126 publications

References 147 publications

From 2D Graphene Nanosheets to 3D Graphene‐based Macrostructures

From 2D Graphene Nanosheets to 3D Graphene‐based Macrostructures

TiO2@PEI-Grafted-MWCNTs Hybrids Nanocomposites Catalysts for CO2 Photoreduction

Electrochemical and thermodynamic study on the corrosion performance of API X120 steel in 3.5% NaCl solution

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