1
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Paz CV, Fereidooni M, Hamd W, Daher EA, Praserthdam P, Praserthdam S. Analysis of Ag-DP25/PET plasmonic nano-composites as a visible-light photocatalyst for wastewater treatment: Experimental/theoretical studies, and the DFT-MB degradation mechanism. ENVIRONMENTAL RESEARCH 2024; 252:119081. [PMID: 38714221 DOI: 10.1016/j.envres.2024.119081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/06/2024] [Accepted: 05/04/2024] [Indexed: 05/09/2024]
Abstract
The development of polymeric-composites Agx%DP25-PET (x = 0,1,2,3) may significantly boost the potential application of Agx%DP25 (x = 0,1,2,3) photocatalytic powders. Producing large-scale nano-composites with hybrid-surfaces, that are also flexible materials and easy to employ in a variety of environments. A set of photocatalytic nan-composites embedded with the polymeric binder poly (acrylonitrile-co-butadiene)-dicarboxy terminated (C7H9N) were performed and evaluated for wastewater treatment applications. The results reveal that the flexible polymeric composites (Agx%DP25-PET, x = 0,1,2,3) have photocatalytic activity in aqua media to degrade methylene blue (MB) under visible-light. The addition of C7H9N to immobilize photocatalytic powders on the PET surface reduces photo-generated electron-hole recombination. The materials were characterized by HR-TEM, SEM/EDX, XRD, FT-IR, UV-Vis DRS and PL. The Agx%DP25-PET (x = 0,1,2,3) photocatalytic reactions exhibited productive discoloration/degradation rates, in both aerobic (AE) and anaerobic (AN) environments. The superior photodegradation of Ag2%DP25-PET was attributed to a combination of two effects: LSPR (localized surface plasmon resonance) and Ag-TiO2/environment affinities. The findings of molecular dynamics (MD) simulation and Fukui Function (FF) based on density functional theory (DFT) provide significant insight into the photocatalytic requirements for MB discoloration/degradation. The experimental/theoretical analysis aimed to offer an in-depth understanding of medium/surface interactions on decorated TiO2 materials, as well as how these interactions affect overall degradation behavior.
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Affiliation(s)
- C V Paz
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10300, Thailand.
| | - M Fereidooni
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10300, Thailand.
| | - W Hamd
- Chemical Engineering Department, Faculty of Engineering, University of Balamand, P.O. Box 33, 1355, El-Koura, Lebanon.
| | - E A Daher
- Petrochemical Engineering Department, Faculty of Engineering III, CRSI, Lebanese University, Rafic Hariri Campus, 1533, Hadat, Lebanon; Laboratoire Chimie de la Matière Condensée de Paris LCMCP, Sorbonne Université, UPMC Paris 06, 4 Place Jussieu, 75005, Paris, France.
| | - P Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10300, Thailand.
| | - S Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10300, Thailand.
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2
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Tsuji Y. Molecular Understanding of the Distinction between Adhesive Failure and Cohesive Failure in Adhesive Bonds with Epoxy Resin Adhesives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7479-7491. [PMID: 38591184 DOI: 10.1021/acs.langmuir.3c04015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
In the development of adhesives, an understanding of the fracture behavior of the bonded joints is inevitable. Two typical failure modes are known: adhesive failure and cohesive failure. However, a molecular understanding of the cohesive failure process is not as advanced as that of the adhesive failure process. In this study, research was developed to establish a molecular understanding of cohesive failure using the example of a system in which epoxy resin is bonded to a hydroxyl-terminated self-assembled monolayer (SAM) surface. Adhesive failure was modeled as a process in which an epoxy molecule is pulled away from the SAM surface. Cohesive failure, on the other hand, was modeled as the process of an epoxy molecule separating from another epoxy molecule on the SAM surface or breaking of a covalent bond within the epoxy resin. The results of the simulations based on the models described above showed that the results of the calculations using the model of cohesive failure based on the breakdown of intermolecular interactions agreed well with the experimental results in the literature. Therefore, it was suggested that the cohesive failure of epoxy resin adhesives is most likely due to the breakdown of intermolecular interactions between adhesive molecules. We further analyzed the interactions at the adhesive failure and cohesive failure interfaces and found that the interactions at the cohesive failure interface are mainly accounted for by dispersion forces, whereas the interactions at the adhesive failure interface involve not only dispersion forces but also various chemical interactions, including hydrogen bonds. The selectivity between adhesive failure and cohesive failure was explained by the fact that varying the functional group density affected the chemical interactions but not the dispersion forces.
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Affiliation(s)
- Yuta Tsuji
- Faculty of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
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3
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Lamberty ZD, Tran NT, van Engers CD, Karnal P, Knorr DB, Frechette J. Cooperative Tridentate Hydrogen-Bonding Interactions Enable Strong Underwater Adhesion. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37450657 PMCID: PMC10375471 DOI: 10.1021/acsami.3c06545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Multidentate hydrogen-bonding interactions are a promising strategy to improve underwater adhesion. Molecular and macroscale experiments have revealed an increase in underwater adhesion by incorporating multidentate H-bonding groups, but quantitatively relating the macroscale adhesive strength to cooperative hydrogen-bonding interactions remains challenging. Here, we investigate whether tridentate alcohol moieties incorporated in a model epoxy act cooperatively to enhance adhesion. We first demonstrate that incorporation of tridentate alcohol moieties leads to comparable adhesive strength with mica and aluminum in air and in water. We then show that the presence of tridentate groups leads to energy release rates that increase with an increase in crack velocity in air and in water, while materials lacking these groups do not display rate-dependent adhesion. We model the rate-dependent adhesion to estimate the activation energy of the interfacial bonds. Based on our data, we estimate the lifetime of these bonds to be between 2 ms and 6 s, corresponding to an equilibrium activation energy between 23kBT and 31kBT. These values are consistent with tridentate hydrogen bonding, suggesting that the three alcohol groups in the Tris moiety bond cooperatively form a robust adhesive interaction underwater.
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Affiliation(s)
- Zachary D Lamberty
- Chemical and Biomolecular Engineering Department, University of California, Berkeley, Berkeley, California 94760, United States
| | - Ngon T Tran
- DEVCOM U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, United States
| | - Christian D van Engers
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Preetika Karnal
- Department of Chemical and Biomolecular Engineering, Lehigh University, 124 E Morton Street, Building 205, Bethlehem, Pennsylvania 18015, United States
| | - Daniel B Knorr
- DEVCOM U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, United States
| | - Joelle Frechette
- Chemical and Biomolecular Engineering Department, University of California, Berkeley, Berkeley, California 94760, United States
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4
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Paz-López CV, Fereidooni M, Praserthdam P, Praserthdam S, Farfán N, Marquez V. Comprehensive analysis (aerobic/anaerobic, molecular recognitions, band-position and degradation-mechanism) of undoped and Co-doped anatase-brookite - An experimental/theoretical evaluation of the less-studied TiO 2 mixed phase. ENVIRONMENTAL RESEARCH 2023; 229:115968. [PMID: 37121350 DOI: 10.1016/j.envres.2023.115968] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/12/2023] [Accepted: 04/19/2023] [Indexed: 05/07/2023]
Abstract
The molecular recognition (MRec) effect is required in the initial phase of organic reactions. The second stage involves molecular-orientations and molecular-orbitals energy-levels (MOrbE). The components of a reaction must be compatible in terms MRec and MOrbE. Therefore, the comprehension of photocatalytic systems applied in wastewater treatment will be improved if the MRec effect is also considered as an important factor. The purpose of this study is to provide a comprehensive understanding of the less studied anatase-brookite mixed-phase (doped and undoped). Anatase/brookite photocatalytic systems were evaluated utilizing experimental/theoretical approaches in H2O (aerobic/anaerobic) environments with Vis-light and the organic pollutant (OrPo) methyl orange (MO). The compatibility of MRec and MOrbE of anatase-brookite mixed-phase (with the different reactive system components) confirmed this is the optimal combination for photocatalytic application. Using the sol-gel method, AM-TiO2NP (amorphous), TiO2NP (crystalline), and TiO2NP-Co0.1 at% (crystalline Co-doped) anatase-brookite mixed-phase photocatalysts were obtained. The morphology and surface were characterized using XRD, BET, SEM, HR-TEM, FT-IR and XPS. Employing UV-vis DRS and PL, photo-response and electron-hole recombination were studied. LVS and Mott-Schottky plot were employed to determine photo-electrochemical activity. The results of TiO2NP photocatalytic degradation in both aerobic and anaerobic environments are remarkable. The results of molecular dynamics (MD) simulation and Fukui Function (FF) based on density functional theory (DFT) validate the remarkable photocatalytic MO degradation.
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Affiliation(s)
- C V Paz-López
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - M Fereidooni
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - P Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - S Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - N Farfán
- Facultad de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, 04510, Ciudad de México, Mexico.
| | - V Marquez
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
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Li S, Zhao Y, Wan H, Lin J, Min J. Molecular Understanding of the Interfacial Interaction and Corrosion Resistance between Epoxy Adhesive and Metallic Oxides on Galvanized Steel. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3061. [PMID: 37109896 PMCID: PMC10141672 DOI: 10.3390/ma16083061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 03/21/2023] [Accepted: 04/10/2023] [Indexed: 06/19/2023]
Abstract
The epoxy adhesive-galvanized steel adhesive structure has been widely used in various industrial fields, but achieving high bonding strength and corrosion resistance is a challenge. This study examined the impact of surface oxides on the interfacial bonding performance of two types of galvanized steel with Zn-Al or Zn-Al-Mg coatings. Scanning electron microscopy and X-ray photoelectron spectroscopy analysis showed that the Zn-Al coating was covered by ZnO and Al2O3, while MgO was additionally found on the Zn-Al-Mg coating. Both coatings exhibited excellent adhesion in dry environments, but after 21 days of water soaking, the Zn-Al-Mg joint demonstrated better corrosion resistance than the Zn-Al joint. Numerical simulations revealed that metallic oxides of ZnO, Al2O3, and MgO had different adsorption preferences for the main components of the adhesive. The adhesion stress at the coating-adhesive interface was mainly due to hydrogen bonds and ionic interactions, and the theoretical adhesion stress of MgO adhesive system was higher than that of ZnO and Al2O3. The corrosion resistance of the Zn-Al-Mg adhesive interface was mainly due to the stronger corrosion resistance of the coating itself, and the lower water-related hydrogen bond content at the MgO adhesive interface. Understanding these bonding mechanisms can lead to the development of improved adhesive-galvanized steel structures with enhanced corrosion resistance.
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Affiliation(s)
- Shuangshuang Li
- School of Mechanical Engineering, Tongji University, Shanghai 201804, China
| | - Yanliang Zhao
- Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China
| | - Hailang Wan
- School of Mechanical Engineering, Tongji University, Shanghai 201804, China
| | - Jianping Lin
- School of Mechanical Engineering, Tongji University, Shanghai 201804, China
| | - Junying Min
- School of Mechanical Engineering, Tongji University, Shanghai 201804, China
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6
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Idisi DO, Ahia CC, Meyer EL, Bodunrin JO, Benecha EM. Graphene oxide:Fe 2O 3 nanocomposites for photodetector applications: experimental and ab initio density functional theory study. RSC Adv 2023; 13:6038-6050. [PMID: 36825286 PMCID: PMC9942109 DOI: 10.1039/d3ra00174a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/15/2023] [Indexed: 02/23/2023] Open
Abstract
In this report, a GO:Fe2O3 nanocomposite was synthesized using a one-step covalent attachment approach using a sol-gel technique. The optical absorbance, photoconductive, photo-capacitive, and electrical properties were obtained using spectroscopy, and current-voltage (I-V) measurements. An enhanced optical absorbance with corresponding band gap reduction is observed when Fe2O3 nanoparticles are incorporated in GO. A corresponding enhanced photoconductance in the order of ×101 was observed due to the impact of band gap narrowing. The enhanced photoconductivity and photo-capacitance can be attributed to energy and charge transfer between GO and Fe atoms, leading to the generation of photo-induced excitons. Density function theory calculations indicate increased charge transfer when GO is doped with Fe-O atoms, which is consistent with experimental data. The observed results could potentially enable the use of GO:Fe2O3 nanocomposites for photodetectors and other optoelectronic applications.
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Affiliation(s)
- David O. Idisi
- Fort Hare Institute of Technology, University of Fort HarePrivate Bag X1314Alice5700South Africa
| | - Chinedu C. Ahia
- Fort Hare Institute of Technology, University of Fort HarePrivate Bag X1314Alice5700South Africa
| | - Edson L. Meyer
- Fort Hare Institute of Technology, University of Fort HarePrivate Bag X1314Alice5700South Africa
| | - Joseph O. Bodunrin
- Department of Physics, CSET, University of South AfricaPrivate Bag X6, Florida Science Campus, Christiaan de Wet and Pioneer Avenue, Florida Park, Florida1710JohannesburgSouth Africa
| | - Evans M. Benecha
- Department of Physics, CSET, University of South AfricaPrivate Bag X6, Florida Science Campus, Christiaan de Wet and Pioneer Avenue, Florida Park, Florida1710JohannesburgSouth Africa
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7
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Wang B, Sun X, Lu F, Shen Y, Xu N, Liu Y, Huang Y, Hu Z. In-situ formed nanoscale Fe 0 for fenton-like oxidation of thermosetting unsaturated polyester resin composites: Nondestructively recycle carbon fiber. CHEMOSPHERE 2022; 307:135780. [PMID: 35870608 DOI: 10.1016/j.chemosphere.2022.135780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 06/17/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
Thermosetting unsaturated polyester resin (UPR) composites were found widespread industrial applications. However, the numerous stable carbon-carbon bonds in cross-linked networks made them intractable for degradation, causing the large-scale composite wastes. Here a nanoscale Fe0 catalyst in-situ forming strategy was exploited to nondestructively recycle carbon fiber (CF) from UPR composites via Fenton-like reaction. The nano-Fe0 catalyst employed in this strategy activated H2O2 for removing UPR, featuring mild conditions and efficient degradation ability. Aiming at facile growth of the catalyst, a porous UPR was achieved by the hydrolysis of alkalic system. The nanoscale Fe0 catalyst was subsequently formed in-situ on the surface of hydrolyzed resin by borohydride reduction. Benefiting from fast mass transfer, the in-situ grown nano-Fe0 showed more efficient degradation ability than added nano-Fe0 or Fe2+ catalyst during Fenton-like reaction. The experiments indicated that hydrolyzed resin could be degraded more than 90% within 80 min, 80 °C. GC-MS, FT-IR analysis and Density functional theory (DFT) calculation were conducted to explained the fracture processes of carbon skeleton in hydrolyzed resin. Especially, a remarkable recovery process of CF from composites was observed, with a 100 percent elimination of resin. The recycled CF cloth exhibited a 99% strength retention and maintained the textile structure, microtopography, chemical structure, resulting in the nondestructive reclaim of CF. This in-situ formed nanoscale Fe0 catalytic degradation strategy may provide a promising practical application for nondestructively recycle CF from UPR composites.
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Affiliation(s)
- Baolong Wang
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Xueying Sun
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Fei Lu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Yibo Shen
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Ningdi Xu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Yingying Liu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Yudong Huang
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China
| | - Zhen Hu
- School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China.
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8
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Shundo A, Yamamoto S, Tanaka K. Network Formation and Physical Properties of Epoxy Resins for Future Practical Applications. JACS AU 2022; 2:1522-1542. [PMID: 35911459 PMCID: PMC9327093 DOI: 10.1021/jacsau.2c00120] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Epoxy resins are used in various fields in a wide range of applications such as coatings, adhesives, modeling compounds, impregnation materials, high-performance composites, insulating materials, and encapsulating and packaging materials for electronic devices. To achieve the desired properties, it is necessary to obtain a better understanding of how the network formation and physical state change involved in the curing reaction affect the resultant network architecture and physical properties. However, this is not necessarily easy because of their infusibility at higher temperatures and insolubility in organic solvents. In this paper, we summarize the knowledge related to these issues which has been gathered using various experimental techniques in conjunction with molecular dynamics simulations. This should provide useful ideas for researchers who aim to design and construct various thermosetting polymer systems including currently popular materials such as vitrimers over epoxy resins.
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Affiliation(s)
- Atsuomi Shundo
- Department
of Applied Chemistry and Center for Polymer Interface and
Molecular Adhesion Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Satoru Yamamoto
- Department
of Applied Chemistry and Center for Polymer Interface and
Molecular Adhesion Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Keiji Tanaka
- Department
of Applied Chemistry and Center for Polymer Interface and
Molecular Adhesion Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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9
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Ahmadi M, Mokhtari A, Bahlakeh G, Karimian H. Flow Injection Chemiluminescence Determination of Ethion and Computational Investigation of the Adsorption Process on Molecularly Imprinted Polymerized High Internal Phase Emulsion. LUMINESCENCE 2022; 37:1514-1523. [PMID: 35816014 DOI: 10.1002/bio.4325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/19/2022] [Accepted: 06/20/2022] [Indexed: 11/09/2022]
Abstract
The lack of sufficient selectivity is the main limitation of chemiluminescence (CL) methods; because the CL reagent is not restricted to a specific analyte. This study investigated the preconcentration and determination of ethion by a flow injection CL (FIA-CL) method using a molecularly imprinted poly high internal phase emulsion (MIP-polyHIPE) adsorbent. Preliminary studies showed that ethion could be determined with high sensitivity in the Ru (bipy)3 2+ -acidic Ce (IV) CL system. A MIP-polyHIPE adsorbent was synthesized and used for preconcentration to increase the selectivity and sensitivity of the method. The adsorption of ethion on the adsorbent was investigated using density functional theory (DFT) and molecular dynamics (MD), UV-Vis and FTIR spectrophotometry and liquid chromatography-tandem mass spectrometry (LC-MS-MS). Response surface methodology (RSM) and central composite design (CCD) were used to find optimized concentrations of variables. The linear dynamic range (LDR) and limit of detection (LOD) for ethion in the FIA-CL method were calculated 1.0✕10-9 -2.0✕10-7 and 6.0✕10-10 mol L-1 , respectively. The percentage of relative standard deviation for 5 repetitive measurements of 5.0⨯10-8 mol L-1 ethion was 4.2%. The proposed method was successfully used to separate and preconcentrate ethion from drinking and surface water sources.
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Affiliation(s)
- Maryam Ahmadi
- Department of Chemistry, Faculty of Sciences, Golestan University, Gorgan, Iran
| | - Ali Mokhtari
- Department of Chemistry, Faculty of Sciences, Golestan University, Gorgan, Iran
| | - Ghasem Bahlakeh
- Department of Chemical Engineering, Faculty of Engineering, Golestan University, Aliabad Katoul, Iran
| | - Hossein Karimian
- Department of Chemical Engineering, Faculty of Engineering, Golestan University, Aliabad Katoul, Iran
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Xu Z, Zhang Y, Wu Y, Lu X. Molecular-Level Correlation between Spectral Evidence and Interfacial Bonding Formation for Epoxy Adhesives on Solid Substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:5847-5856. [PMID: 35441517 DOI: 10.1021/acs.langmuir.2c00470] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Interfacial bonding strength of an epoxy-based adhesive depends on the interfacial interaction between the adhesive and the substrate. Normally, the curing process at the interface accompanied by the interfacial bonding formation is different from that in the bulk, and it is still a big challenge to probe the interfacial bonding formation at a molecular level. In this study, to trace the interfacial structural evolution of a representative formula of epoxy (digylcidyl ether of biphenyl A, DGEBA) and amine hardener [1,2-bis(2-aminoethoxy)ethane, EDDA] with the sapphire and silica substrates upon curing and post-curing steps, sum frequency generation (SFG) vibrational spectroscopy is employed to detect the molecular-level interfacial structural information. For the sapphire substrate, upon curing, backbone methylene (CH2) stretching signals decrease, indicating the formation of a rigid chain network structure and thus losing the local methylene order, while vibrational signals of the sapphire surface hydroxyl (OH) groups (including hydrogen-bonded and unbonded) increase significantly, indicating the formation of a strong hydrogen-bonding and polar interaction between the epoxy adhesive and the sapphire surface. Upon post-curing, increased backbone CH2 signals and decreased sapphire OH signals suggest interfacial chemical bonding formation due to the reaction between the epoxy rings and the sapphire surface OH groups. Orientation analysis confirms the enhanced ordering of the sapphire surface OH groups upon curing and post-curing, in comparison to the uncured epoxy formula. As for the fused silica, weak vibrational signals of the methylene (CH2) and methyl (CH3) groups are observed before curing, while both of them increase slightly for the cured and post-cured epoxy formulae, suggesting relatively less hydrophilic nature of the silica surface compared to that of the sapphire surface, also evidenced by the very weak OH signals upon curing and post-curing. Further measurement on the adhesion strength matches up with the above spectroscopic experimental results, substantiating the correlation between the macroscopic bonding strength of the epoxy adhesive and the microscopic molecular-level structure.
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Affiliation(s)
- Zhaohui Xu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yinyu Zhang
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China
| | - Yeping Wu
- Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China
| | - Xiaolin Lu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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11
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Liu Q, Huang W, Liu B, Wang PC, Chen HB. Experimental and Theoretical Study of Gamma Radiolysis and Dose Rate Effect of o-Cresol Formaldehyde Epoxy Composites. ACS APPLIED MATERIALS & INTERFACES 2022; 14:5959-5972. [PMID: 35049269 DOI: 10.1021/acsami.1c19609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Gamma radiolysis behaviors and mechanisms of silica-filled o-cresol formaldehyde epoxy are studied at 2.20 × 10-5 to 1.95 × 10-1 Gy/s. The radiolysis-induced changes in chemical structures do not severely affect its thermostability. The slightly deteriorated mechanical strength at temperature exceeding 100 °C is accompanied by the declining glass transition temperature (from 185.9 to 172.2 °C) and enhanced damping ability. The gas yields of hydrogen, methane, and carbon dioxide manifest a remarkable dose rate effect. Based on the Schwarzschild law, their yields at an extremely low dose rate are accurately predicted by the established master curves. Besides, the latent radiolysis of gas products and postradiation effect are found with caution. The radiation-caused residual spin species are proved to be composed of silica defects and a phenoxy-type free radical with a tert-butyl group, according to the experimental results, theoretical calculations, and spectra simulations. The lower vertical ionization potential (7.6 eV) and adiabatic ionization potential (7.1 eV) are primarily due to the ionization of the benzene ring moiety with the tert-butyl group, which is likely to suffer from radiolysis. The calculated bond dissociation energy (260.8-563.5 kJ/mol) of the typical chemical bonds of epoxy is consistent with its radiolytic vulnerability and degradation mechanisms.
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Affiliation(s)
- Qiang Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, China
| | - Wei Huang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, China
| | - Bo Liu
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, China
| | - Pu-Cheng Wang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, China
| | - Hong-Bing Chen
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, China
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12
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Wand CR, Gibbon S, Siperstein FR. Adsorption of Epoxy Oligomers on Iron Oxide Surfaces: The Importance of Surface Treatment and the Role of Entropy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12409-12418. [PMID: 34644491 DOI: 10.1021/acs.langmuir.1c02015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Epoxy-based coatings are widely used in a range of industries as protective coatings. The performance of the final solid-polymer system is dependent on the physicochemical properties of the interface and the interaction between the polymer and the solid substrate. In this study, we perform atomistic molecular dynamics simulations to investigate the binding of a common component in epoxy resins, diglycidyl ether of bisphenol A (DGEBA), on two iron oxide surfaces, hematite (0001) and magnetite (100), and investigate the effect of surface hydroxylation on the binding energy. We show that adsorption of DGEBA on hematite is more favorable than on magnetite and that the adsorbed molecules are highly localized on the pristine hematite surface but mobile on highly hydroxylated hematite surfaces and magnetite surfaces irregardless of surface hydroxylation fraction. A high degree of hydroxylation significantly reduces the binding energy of DGEBA on hematite but not on magnetite. The free-energy calculations confirm the trends observed upon hydroxylation, but the magnitude of the potential of mean force is lower than the binding energy due to the entropic contributions. Therefore, it can be suggested that DGEBA will adsorb more strongly on a surface containing a higher content of hematite than magnetite and that the presence of hydroxyl groups will weaken this adsorption. The presence of hydroxyl groups increases mobility of the chains, which can affect the coating rigidity.
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Affiliation(s)
- Charlie R Wand
- Department of Chemical Engineering and Analytical Science, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Simon Gibbon
- AkzoNobel Research and Development, Northallerton, North Yorkshire DL7 7BJ, U.K
| | - Flor R Siperstein
- Department of Chemical Engineering and Analytical Science, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
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Tsuji Y, Yoshizawa K. Competition between Hydrogen Bonding and Dispersion Force in Water Adsorption and Epoxy Adhesion to Boron Nitride: From the Flat to the Curved. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:11351-11364. [PMID: 34519515 DOI: 10.1021/acs.langmuir.1c01935] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hexagonal boron nitride (h-BN) is a material with excellent thermal conductivity and electrical insulation, used as an additive to various matrices. To increase the affinity of h-BN to them, hydrogen bonds should be formed at the interface. In reality, however, they are not formed; the N atoms are not capable of accepting hydrogen bonds due to the delocalization of their lone pair electrons over the B-N π bonds. To make it form hydrogen bonds, one may need to break the planarity of h-BN so that the orbital overlap in the B-N π bonds can be reduced. This idea is verified with first-principles calculations on the adsorption of a water molecule on hypothetical h-BN surfaces, the planarity of which is broken. One can do it in silico but not in vitro. BN nanotubes (BNNTs) are considered as a more realistic BN surface with nonplanarity. The hydrogen bond is shown to become stronger as the curvature of the tube increases. On the contrary, the strength of the dispersion force acting at the interface becomes weaker. In water adsorption, these two interactions are in competition with each other. However, in epoxy adhesion, the interaction due to dispersion forces is overwhelmingly stronger than that due to hydrogen bonding. The smaller the curvature of the surface, the smaller the distance between more atoms at the interface; thus, the interaction due to dispersion forces maximized.
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Affiliation(s)
- Yuta Tsuji
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
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Kotb Y, Cagnard A, Houston KR, Khan SA, Hsiao LC, Velev OD. What makes epoxy-phenolic coatings on metals ubiquitous: Surface energetics and molecular adhesion characteristics. J Colloid Interface Sci 2021; 608:634-643. [PMID: 34628322 DOI: 10.1016/j.jcis.2021.09.091] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 11/29/2022]
Abstract
HYPOTHESIS Wetting characteristics of epoxy and phenolic resins on metals depend on the molecular interactions between resins' functional groups and metal surface. Those interactions affect the practical adhesion strength of epoxy-phenolic coatings on metals. Estimation of the theoretical adhesion energies can reveal this system's microscopic adhesion mechanisms. EXPERIMENTS Adhesion is estimated theoretically based on resins' wettability on metals, and experimentally through pull-off adhesion testing of cured coatings. The effect of various functional groups on adhesion is decoupled using epoxy and phenolic resins with different functionalities. To assess the impact of the metal passivation on adhesion, tinplated and tin-free steel substrates are used. Differences in their surface chemical composition and polarity are investigated using XPS. FINDINGS Theoretical adhesion results reveal a superior adhesion of epoxy compared to phenolic resins. Moreover, epoxy resins having a higher content of epoxide-to-hydroxyl groups show improved theoretical and practical adhesion. The importance of epoxides in driving resins' initial adhesion on metals is attributed to the formation of direct chemical bonds with active hydrogen on metal surfaces. The adhesion of coatings on tin-free steel is found to be higher than on tinplated steel. This is associated to the increased hydroxyl fraction on tin-free steel surface leading to more hydrogen bonds formation.
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Affiliation(s)
- Yosra Kotb
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | | | | | - Saad A Khan
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Lilian C Hsiao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Orlin D Velev
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695, USA.
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15
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Polysulfone/Polyetherimide Ultrafiltration composite membranes constructed on a three-component Nylon-fiberglass-Nylon support for azo dyes removal: Experimental and molecular dynamics simulations. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126941] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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16
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Benkhaya S, Lgaz H, Alrashdi AA, M'rabet S, El Bachiri A, Assouag M, Chung IM, El Harfi A. Upgrading the performances of polysulfone/polyetherimide ultrafiltration composite membranes for dyes removal: Experimental and molecular dynamics studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115743] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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17
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Bahremand F, Shahrabi T, Ramezanzadeh B. Epoxy coating anti-corrosion properties enhancement via the steel surface treatment by nanostructured samarium oxide-poly-dopamine film. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123722. [PMID: 33264896 DOI: 10.1016/j.jhazmat.2020.123722] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 06/12/2023]
Abstract
Nowadays, the rare earth element-based conversion coatings (REE-based CCs) are a potential eco-friendly alternative for hazardous and carcinogenic Cr-based CCs. These coatings have morphological defects that impair their performance; therefore, they need to be surface modified. In this study, for the first time, the steel surface was coated with an eco-friendly Sm-based CC and then post-modified by poly-dopamine based biopolymer. The air-exposed based self-polymerization and oxidant-induced polymerization are two protocols which have been utilized for poly-dopamine synthesis. The SEM/EDS analysis and Raman spectroscopy have been employed for the treated steel surface characterization. In addition, the electrochemical impedance spectroscopy (EIS) analysis and salt-spray test (SST) were carried out to investigate the epoxy (EP) coating corrosion protection performance. The Rt values of the EP applied on the Sm-PDA modified steel, subjected to a 3.5 wt. % NaCl solution, are respectively 2550 GΩ.cm2 and 100 kΩ. cm2 before and after the creation of scratch. These values are about 94000-fold and 21-fold more than the Rt of the defected/un-defected EP coatings applied on the unmodified steel. In addition, the EP applied on the Sm-PDA modified steel showed lower corrosion and less disbonding in SST and higher resistance against CD than the EP applied on the unmodified steel.
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Affiliation(s)
- Farshad Bahremand
- Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, 14115-143, Tehran, Iran
| | - Taghi Shahrabi
- Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, 14115-143, Tehran, Iran.
| | - Bahram Ramezanzadeh
- Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, 16765-654, Tehran, Iran.
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18
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Phenol adsorption mechanism on the zinc oxide surface: Experimental, cluster DFT calculations, and molecular dynamics simulations. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114993] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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19
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Li W, Zhang L, Zhang M, Chen S. Structures of Graphene-Reinforced Epoxy Coatings and the Dynamic Diffusion of Guest Water: A Molecular Dynamics Study. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04673] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wen Li
- School of Materials Science & Engineering, Ocean University of China, Qingdao 266100, P. R. China
| | - Lei Zhang
- School of Materials Science & Engineering, Ocean University of China, Qingdao 266100, P. R. China
| | - Mutian Zhang
- School of Materials Science & Engineering, Ocean University of China, Qingdao 266100, P. R. China
| | - Shougang Chen
- School of Materials Science & Engineering, Ocean University of China, Qingdao 266100, P. R. China
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20
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Mofidabadi AHJ, Bahlakeh G, Ramezanzadeh B. Explorations of the adhesion and anti-corrosion properties of the epoxy coating on the carbon steel surface modified by Eu2O3 nanostructured film. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Asadi N, Ramezanzadeh M, Bahlakeh G, Ramezanzadeh B. Theoretical MD/DFT computer explorations and surface-electrochemical investigations of the zinc/iron metal cations interactions with highly active molecules from Lemon balm extract toward the steel corrosion retardation in saline solution. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113220] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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22
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Rastegarpanah A, Meshkani F, Liu Y, Deng J, Jing L, Pei W, Zhang K, Hou Z, Han Z, Rezaei M, Dai H. Toluene Oxidation over the M–Al (M = Ce, La, Co, Ce–La, and Ce–Co) Catalysts Derived from the Modified “One-Pot” Evaporation-Induced Self-Assembly Method: Effects of Microwave or Ultrasound Irradiation and Noble-Metal Loading on Catalytic Activity and Stability. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06306] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ali Rastegarpanah
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Fereshteh Meshkani
- Catalyst and Advanced Materials Research Laboratory, Chemical Engineering Department, Faculty of Engineering, University of Kashan, Kashan 87317-53153, Iran
- Institute of Nanoscience and Nanotechnology, University of Kashan, Kashan 87317-53153, Iran
| | - Yuxi Liu
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Jiguang Deng
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Lin Jing
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Wenbo Pei
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Kunfeng Zhang
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Zhiquan Hou
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Zhuo Han
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
| | - Mehran Rezaei
- School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology (IUST), Tehran 13114-16846, Iran
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
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23
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Yang C, Xing X, Li Z, Zhang S. A Comprehensive Review on Water Diffusion in Polymers Focusing on the Polymer-Metal Interface Combination. Polymers (Basel) 2020; 12:polym12010138. [PMID: 31935864 PMCID: PMC7023388 DOI: 10.3390/polym12010138] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/17/2019] [Accepted: 12/20/2019] [Indexed: 11/16/2022] Open
Abstract
Water diffusion in polymers is relevant to a broad range of physicochemical phenomena and technological processes. Although many fields contributed to rapid progress in the fundamental knowledge of water-polymer interactions, detailed understandings come mainly from interpreting numerous experiments. These studies showed that a remarkably rich variety of diffusion forms between water and even seemingly simple polymers. In this review, focusing on the gravimetric and capacitance method, we discuss contradictions and problems existing for water diffusion in polymers in detail from perspectives of experiments and models, focusing on the analysis of error derived from widely used methods, especially for the Brasher-Kingsbury equation. We also provide a perspective on outstanding problems, challenges, and open questions, including water clusters, relaxation, and electrochemical reactions at the metal/polymer interface, as well as expanding the theoretical prospective.
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24
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Tabatabaei majd M, Akbarzadeh S, Ramezanzadeh M, Bahlakeh G, Ramezanzadeh B. A detailed investigation of the chloride-induced corrosion of mild steel in the presence of combined green organic molecules of Primrose flower and zinc cations. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.111862] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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25
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Tabatabaei majd M, Bahlakeh G, Dehghani A, Ramezanzadeh B, Ramezanzadeh M. A green complex film based on the extract of Persian Echium amoenum and zinc nitrate for mild steel protection in saline solution; Electrochemical and surface explorations besides dynamic simulation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111281] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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26
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Elucidating detailed experimental and fundamental understandings concerning the green organic-inorganic corrosion inhibiting molecules onto steel in chloride solution. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111212] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Qian Y, Guo M, Li C, Bi K, Chen Y. New Insight on the Interface between Polythiophene and Semiconductors via Molecular Dynamics Simulations. ACS APPLIED MATERIALS & INTERFACES 2019; 11:30470-30476. [PMID: 31339292 DOI: 10.1021/acsami.9b09742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Polythiophene is considered as an effective dry adhesive and is promising to be a conductive adhesive due to its excellent properties. Here, we used steered molecular dynamics to investigate the interfacial strength between polythiophene and various semiconductors with similar structures including silicon, silicon carbide, and diamond. Energy decomposition was done to have a detailed insight into the adhesive mechanism. Particularly, we laid stress on the entropy difference of the polythiophene chain in different systems. Van der Waals interaction and electrostatic interaction both positively contributed to the adhesion between polythiophene and semiconductors, while the entropy change of polythiophene, including vibrational entropy change and conformational entropy change, weakened the adhesion to some extent. Our results indicated that the combined effect of these three factors made the adhesion between polythiophene and silicon carbide the strongest among the systems we studied. Additionally, it was found that such adhesion was scarcely influenced by temperature. This simple polythiophene-semiconductor interfacial study can help optimize the choice of the semiconductor when applying the polythiophene adhesive.
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Affiliation(s)
- Yicheng Qian
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering , Southeast University , Nanjing 211189 , P. R. China
| | - Ming Guo
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering , Southeast University , Nanjing 211189 , P. R. China
| | - Chun Li
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering , Southeast University , Nanjing 211189 , P. R. China
| | - Kedong Bi
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering , Southeast University , Nanjing 211189 , P. R. China
| | - Yunfei Chen
- Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering , Southeast University , Nanjing 211189 , P. R. China
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28
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Dagdag O, Berisha A, Safi Z, Hamed O, Jodeh S, Verma C, Ebenso EE, El Harfi A. DGEBA‐polyaminoamide as effective anti‐corrosive material for 15CDV6 steel in NaCl medium: Computational and experimental studies. J Appl Polym Sci 2019. [DOI: 10.1002/app.48402] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Omar Dagdag
- Laboratory of Agroresources, Polymers and Process Engineering, Department of Chemistry, Faculty of ScienceIbn Tofail University BP 133, 14000 Kenitra Morocco
| | - Avni Berisha
- Department of Chemistry, Faculty of Natural and Mathematics ScienceUniversity of Prishtina 10000 Prishtina Kosovo
| | - Zaki Safi
- Al Azhar University‐GazaChemistry Department, Faculty of Science P.O Box 1277 Gaza Palestine
| | - Othman Hamed
- Department of ChemistryAn‐Najah National University P. O. Box 7 Nablus Palestine
| | - Shehdeh Jodeh
- Department of ChemistryAn‐Najah National University P. O. Box 7 Nablus Palestine
| | - Chandrabhan Verma
- Material Science Innovation & Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural SciencesNorth‐West University, Private Bag X2046 Mmabatho 2735 South Africa
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, School of Chemical and Physical SciencesNorth‐West University, Private Bag X2046 Mmabatho 2735 South Africa
| | - E. E. Ebenso
- Material Science Innovation & Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural SciencesNorth‐West University, Private Bag X2046 Mmabatho 2735 South Africa
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, School of Chemical and Physical SciencesNorth‐West University, Private Bag X2046 Mmabatho 2735 South Africa
| | - Ahmed El Harfi
- Laboratory of Agroresources, Polymers and Process Engineering, Department of Chemistry, Faculty of ScienceIbn Tofail University BP 133, 14000 Kenitra Morocco
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29
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Ning J, Shi P, Jiang M, Liu C, Li X. Effect of Ce Doping on the Structure and Chemical Stability of Nano-α-Fe 2O 3. NANOMATERIALS 2019; 9:nano9071039. [PMID: 31330873 PMCID: PMC6669557 DOI: 10.3390/nano9071039] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 07/19/2019] [Accepted: 07/19/2019] [Indexed: 11/16/2022]
Abstract
Ce-doped nano-α-Fe2O3 was successfully synthesized via the hydrothermal method. The properties of the prepared particles were studied by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS) and electrochemical methods. It was found that the Ce element can be doped into the α-Fe2O3 lattice resulting in lattice distortion, which can refine the grain and improve the crystal surface’s integrity significantly. In addition, doping of Ce element can shorten the Fe–O bond length in the α-Fe2O3 crystal, cause a blue shift of the stretching vibration band, enhance binding energy of Fe–O and the chemical stability of the α-Fe2O3 crystal.
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Affiliation(s)
- Junxiang Ning
- Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Wenhua Road, Heping District, Shenyang 110819, China
| | - Peiyang Shi
- Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Wenhua Road, Heping District, Shenyang 110819, China.
| | - Maofa Jiang
- Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Wenhua Road, Heping District, Shenyang 110819, China
| | - Chengjun Liu
- Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), School of Metallurgy, Northeastern University, Wenhua Road, Heping District, Shenyang 110819, China
| | - Xiaoliang Li
- School of Metallurgical Engineering, Liaoning Institute of Science and Technology, Liaoning, Fragrance of huaihe road, High-tech Industrial Development District, Benxi 117004, China
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30
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Ramezanzadeh M, Bahlakeh G, Sanaei Z, Ramezanzadeh B. Interfacial adhesion and corrosion protection properties improvement of a polyester-melamine coating by deposition of a novel green praseodymium oxide nanofilm: A comprehensive experimental and computational study. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.01.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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31
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A detailed atomic level computational and electrochemical exploration of the Juglans regia green fruit shell extract as a sustainable and highly efficient green corrosion inhibitor for mild steel in 3.5 wt% NaCl solution. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.04.045] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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32
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A detailed electrochemical/theoretical exploration of the aqueous Chinese gooseberry fruit shell extract as a green and cheap corrosion inhibitor for mild steel in acidic solution. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.03.011] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Ramezanzadeh M, Bahlakeh G, Ramezanzadeh B, Rostami M. Mild steel surface eco-friendly treatment by Neodymium-based nanofilm for fusion bonded epoxy coating anti-corrosion/adhesion properties enhancement in simulated seawater. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Tsuji Y, Kitamura Y, Someya M, Takano T, Yaginuma M, Nakanishi K, Yoshizawa K. Adhesion of Epoxy Resin with Hexagonal Boron Nitride and Graphite. ACS OMEGA 2019; 4:4491-4504. [PMID: 31459644 PMCID: PMC6648480 DOI: 10.1021/acsomega.9b00129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 02/11/2019] [Indexed: 05/14/2023]
Abstract
Adhesion interaction of epoxy resin with the basal surfaces of h-BN and graphite is investigated with the first-principles density functional theory calculations in conjunction with the dispersion correction. The h-BN/epoxy and graphite/epoxy interfaces play an important role in producing nanocomposite materials with excellent thermal dissipation properties. The epoxy resin structure is simulated by using four kinds of fragmentary models. Their structures are optimized on the h-BN and graphite surfaces after an annealing simulation. The distance between the epoxy fragment and the surface is about 3 Å. At the interface between h-BN and epoxy resin, no H-bonding formation is observed, though one could expect that the active functional groups of epoxy resin, such as hydroxyl (-OH) group, would be involved in a hydrogen-bonding interaction with nitrogen atoms of the h-BN surface. The adhesion energies for the two interfaces are calculated, showing that these two interfaces are characterized by almost the same strength of adhesion interaction. To obtain the adhesion force-separation curve for the two interfaces, the potential energy surface associated with the detachment of the epoxy fragment from the surface is calculated with the help of the nudged elastic band method and then the adhesion force is obtained by using either the Morse-potential approximation or the Hellmann-Feynman force calculation. The results from both methods agree with each other. The maximum adhesion force for the h-BN/epoxy interface is as high as that for the graphite/epoxy interface. To better understand this result, a force-decomposition analysis is carried out, and it has been disclosed that the adhesion forces working at both interfaces mainly come from the dispersion force. The trend of increase in the C 6 parameters used for the dispersion correction for the atoms included in the h-BN or graphite surface is in the order: N < C < B, which reasonably explains why the strengths of the dispersion forces operating at the two interfaces are similar. Also, the electron localization function analysis can explain why the h-BN surface cannot form an H bond with the hydroxyl group in epoxy resin.
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Affiliation(s)
- Yuta Tsuji
- Institute
for Materials Chemistry and Engineering and IRCCS, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yasuhiro Kitamura
- Institute
for Materials Chemistry and Engineering and IRCCS, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masao Someya
- Mitsubishi
Gas Chemical Company Inc., Chiyoda-ku, Tokyo 100-8324, Japan
| | - Toshihiko Takano
- Mitsubishi
Gas Chemical Company Inc., Chiyoda-ku, Tokyo 100-8324, Japan
| | - Michio Yaginuma
- Mitsubishi
Gas Chemical Company Inc., Chiyoda-ku, Tokyo 100-8324, Japan
| | - Kohei Nakanishi
- Mitsubishi
Gas Chemical Company Inc., Chiyoda-ku, Tokyo 100-8324, Japan
| | - Kazunari Yoshizawa
- Institute
for Materials Chemistry and Engineering and IRCCS, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan
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Tabatabaei majd M, Shahrabi T, Ramezanzadeh B, Bahlakeh G. Development of a high-performance corrosion protective functional nano-film based on poly acrylic acid-neodymium nitrate on mild steel surface. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.12.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Dehghani A, Bahlakeh G, Ramezanzadeh B, Ramezanzadeh M. Potential of Borage flower aqueous extract as an environmentally sustainable corrosion inhibitor for acid corrosion of mild steel: Electrochemical and theoretical studies. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.008] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Use of Rosa canina fruit extract as a green corrosion inhibitor for mild steel in 1 M HCl solution: A complementary experimental, molecular dynamics and quantum mechanics investigation. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.09.013] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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38
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Dagdag O, Safi Z, Erramli H, Cherkaoui O, Wazzan N, Guo L, Verma C, Ebenso EE, El Harfi A. Adsorption and anticorrosive behavior of aromatic epoxy monomers on carbon steel corrosion in acidic solution: computational studies and sustained experimental studies. RSC Adv 2019; 9:14782-14796. [PMID: 35516296 PMCID: PMC9064207 DOI: 10.1039/c9ra01672d] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/17/2019] [Indexed: 11/24/2022] Open
Abstract
Herein, the synthesis, characterization and corrosion inhibition effectiveness of two aromatic epoxy monomers (AEMs) namely, 2-(oxiran-2-yl-methoxy)-N,N-bis(oxiran-2-yl-methyl)aniline (AEM1) and N,N-bis(oxiran-2-ylmethyl)-2-((oxiran-2-ylmethyl) thio)aniline (AEM2), in carbon steel corrosive dissolution in 1 M HCl solution is investigated using computational and experimental techniques. AEM1 and AEM2 were characterized using FT-IR, 1H NMR and 13C NMR spectroscopy techniques. Electrochemical results demonstrated that AEMs act as reasonably good corrosion inhibitors for carbon steel in 1 M HCl medium and their effectiveness followed the sequence: AEM2 (95.4%) > AEM1 (94.3%). A PDP study showed that AEMs act as mixed-type inhibitors with slight anodic predominance. Adsorption of the AEMs obeyed the Langmuir isotherm model. Interactions between AEMs and the metallic surface was further studied using DFT and MD simulations that give several computational parameters such as I, A, EHOMO, ELUMO, ΔE, δ, χ, ρ, σ, η, ΔN and Eads. The experimental and computational results were in good agreement and well complimented each other. Herein, the synthesis, characterization and corrosion inhibition effectiveness of two aromatic epoxy monomers (AEMs) in carbon steel corrosive dissolution in 1 M HCl solution was investigated using computational and experimental techniques.![]()
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Affiliation(s)
- Omar Dagdag
- Laboratory of Agroresources
- Polymers and Process Engineering (LAPPE)
- Department of Chemistry
- Faculty of Science
- Ibn Tofail University
| | - Zaki Safi
- Al Azhar University-Gaza
- Chemistry Department
- Faculty of Science
- Palestine
| | - Hamid Erramli
- Laboratory of Materials, Electrochemistry and Environment
- Department of Chemistry
- Faculty of Sciences
- Ibn Tofail University
- Kenitra
| | - Omar Cherkaoui
- Higher School of Textile and Clothing Industries
- Laboratory REMTEX
- Casablanca
- Morocco
| | - Nuha Wazzan
- King Abdulaziz University
- Chemistry Department
- Faculty of Science
- Jeddah
- Saudi Arabia
| | - Lei Guo
- School of Materials and Chemical Engineering
- Tongren University
- Tongren
- China
| | - Chandrabhan Verma
- Material Science Innovation & Modelling (MaSIM) Research Focus Area
- Faculty of Natural and Agricultural Sciences
- North-West University
- Mmabatho 2735
- South Africa
| | - E. E. Ebenso
- Material Science Innovation & Modelling (MaSIM) Research Focus Area
- Faculty of Natural and Agricultural Sciences
- North-West University
- Mmabatho 2735
- South Africa
| | - Ahmed El Harfi
- Laboratory of Agroresources
- Polymers and Process Engineering (LAPPE)
- Department of Chemistry
- Faculty of Science
- Ibn Tofail University
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Ramezanzadeh M, Bahlakeh G, Sanaei Z, Ramezanzadeh B. Studying the Urtica dioica leaves extract inhibition effect on the mild steel corrosion in 1 M HCl solution: Complementary experimental, ab initio quantum mechanics, Monte Carlo and molecular dynamics studies. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.059] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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40
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Ramezanzadeh M, Sanaei Z, Ramezanzadeh B. The influence of steel surface treatment by a novel eco-friendly praseodymium oxide nanofilm on the adhesion and corrosion protection properties of a fusion-bonded epoxy powder coating. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.01.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Nakatsuka N, Hasani-Sadrabadi MM, Cheung KM, Young TD, Bahlakeh G, Moshaverinia A, Weiss PS, Andrews AM. Polyserotonin Nanoparticles as Multifunctional Materials for Biomedical Applications. ACS NANO 2018; 12:4761-4774. [PMID: 29664607 PMCID: PMC6087466 DOI: 10.1021/acsnano.8b01470] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Serotonin-based nanoparticles represent a class of previously unexplored multifunctional nanoplatforms with potential biomedical applications. Serotonin, under basic conditions, self-assembles into monodisperse nanoparticles via autoxidation of serotonin monomers. To demonstrate potential applications of polyserotonin nanoparticles for cancer therapeutics, we show that these particles are biocompatible, exhibit photothermal effects when exposed to near-infrared radiation, and load the chemotherapeutic drug doxorubicin, releasing it contextually and responsively in specific microenvironments. Quantum mechanical and molecular dynamics simulations were performed to interrogate the interactions between surface-adsorbed drug molecules and polyserotonin nanoparticles. To investigate the potential of polyserotonin nanoparticles for in vivo targeting, we explored their nano-bio interfaces by conducting protein corona experiments. Polyserotonin nanoparticles had reduced surface-protein interactions under biological conditions compared to polydopamine nanoparticles, a similar polymer material widely investigated for related applications. These findings suggest that serotonin-based nanoparticles have advantages as drug-delivery platforms for synergistic chemo- and photothermal therapy associated with limited nonspecific interactions.
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Affiliation(s)
- Nako Nakatsuka
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Chemistry & Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Mohammad Mahdi Hasani-Sadrabadi
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Chemistry & Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, California 90095, United States
- Parker H. Petit Institute for Bioengineering and Bioscience, G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kevin M. Cheung
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Chemistry & Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Thomas D. Young
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Chemistry & Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Ghasem Bahlakeh
- Department of Engineering and Technology, Golestan University, Aliabad Katool, Iran
| | - Alireza Moshaverinia
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, School of Dentistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Paul S. Weiss
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Chemistry & Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA 90095, United States
| | - Anne M. Andrews
- California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Department of Chemistry & Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, United States
- Semel Institute for Neuroscience & Human Behavior and Hatos Center for Neuropharmacology, University of California, Los Angeles, Los Angeles, CA 90095, United States
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Bahlakeh G, Ramezanzadeh B, Ramezanzadeh M. New detailed insights on the role of a novel praseodymium nanofilm on the polymer/steel interfacial adhesion bonds in dry and wet conditions: An integrated molecular dynamics simulation and experimental study. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.01.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Alibakhshi E, Ramezanzadeh M, Bahlakeh G, Ramezanzadeh B, Mahdavian M, Motamedi M. Glycyrrhiza glabra leaves extract as a green corrosion inhibitor for mild steel in 1 M hydrochloric acid solution: Experimental, molecular dynamics, Monte Carlo and quantum mechanics study. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.144] [Citation(s) in RCA: 204] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Corrosion protective and adhesion properties of a melamine-cured polyester coating applied on steel substrate treated by a nanostructure cerium–lanthanum film. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.09.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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