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Frontiers of Chemical Science and Engineering 2023年第2期17卷 167-182页

作者： Yueting Shi Lingli Chen Shengtao Zhang Hongru Li Fang Gao College of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China

In this study,two novel environmental benign double antibiotic norfloxacin or ciprofloxacin scaffolds included branched molecules were prepared by multi-step routes and purified by simple performance,which were used as the target compounds(TCs).Meanwhile,a single norfloxacin or ciprofloxacin skeleton based molecules were synthesized as the reference compounds(RCs).The molecular geometry optimization and material simulation computation revealed that TCs presented smaller HOMOLUMO energy gaps and larger binding energy levels on mild steel surface than RCs.The chemical adsorption of TCs on steel surface was confirmed by X-ray photoelectron spectroscopy,which could be processed by TCs chelation with iron ions.It was shown that TCs could be self-adsorbed on steel surface,which was demonstrated by atomic force microscopy and scanning electron microscopy.The Anticorrosion of the studied compounds for mild steel in HCl solution was investigated by electrochemistry analysis.The results suggested that the Anticorrosion efficiency could reach 95.86%(TC1)and 97.05%(TC2)at 0.050 mmol·L^(−1) based on electrochemical impedance spectroscopy,which were much better than RCs(RC1,69.23%;RC2,74.16%).The adsorption isotherms of TCs on steel were further fitted,and a deep insight on adsorption was discussed.

关键词： branched compounds floxacin scaffold mild steel Anticorrosion environmentally benign

Analyze the Performance of Electroactive Anticorrosion Coating of Medical Magnesium Alloy Using Deep Learning

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Computers, Materials & Continua 2024年第4期79卷 263-278页

作者： Yashan Feng Yafang Tian Yongxin Yang Yufang Zhang Haiwei Guo Jing’an Li Advanced Functional Materials Laboratory Zhengzhou Railway Vocational and Technical CollegeZhengzhou450000China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450000China

Electroactive Anticorrosion coatings are specialized surface treatments that prevent or minimize corrosion. Thestudy employs strategic thermodynamic equilibriumcalculations to pioneer a novel factor in corrosion protection.A first-time proposal, the total acidity (TA) potential of the hydrogen (pH) concept significantly shapes medicalmagnesium alloys. These coatings are meticulously designed for robust corrosion resistance, blending theoreticalinsights and practical applications to enhance our grasp of corrosion prevention mechanisms and establisha systematic approach to coating design. The groundbreaking significance of this study lies in its innovativeintegration of the TA/pH concept,which encompasses the TA/pH ratio of the chemical environment. This approachsurpasses convention by acknowledging the intricate interplay between the acidity and pH levels within thecoating formulation, thereby optimizing metal-phosphate-based conversion coatings and transforming corrosionmitigation strategies. To authenticate the TA/pH concept, the study comprehensively compares its findings withexisting research, rigorously validating the theoretical framework and reinforcing the correlates among TA/pHvalues and observed corrosion resistance in the coatings. The influence of mutations that occur naturally inthe detergent solution on persistent phosphorus changes is shown by empirical confirmation, which improvescorrosion resistance. This realization advances the field ofmaterials and the field’s knowledge of coated generation,particularly Anticorrosion converter layers.

关键词： Medical magnesium alloys hydrogen gas Anticorrosion total acidity potential of the hydrogen(pH)

Improved Anticorrosion performance of mixed valence Mnmodified ZnO dilute magnetic solid solution with multilevel selfassembled network structure

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Nano Research 2022年第7期15卷 6590-6600页

作者： Yi-Xiang Chen Dan Zhou Xiao-Jiao Guo Xiu Yang Si-Rui Zhao Yi Lu Jin-Ku Liu Key Laboratory for Advanced Materials School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Material Corrosion and Protection Key Laboratory of Sichuan ProvinceZigong 643000China

The design and performance prediction of efficient Anticorrosion materials is a work full of value,novelty,and challenges.In this work,from the perspective of nanostructure and composition,ZnO-based dilute magnetic solid solution(DMSs)with hydrophobic micronano network structure was synthesized through the self-induced effect of raw materials,the impact-resistant network structure,complex micro-channels,and densely nested layers resisted electrolyte intrusion.Further,the doping of mixed valence Mn element endowed the solid solution with dilute magnetic properties,so the Lorentz force from micromagnetic field changed the movement path of electrons produced by the anode reaction to improve the corrosion inhibition ability of the protective layer.Under the synergy of morphology and magnetism,the corrosion resistance of the DMSs materials was 555.4%and 173.8%higher than that of epoxy resin and ZnO shielding layer,respectively.Besides,a valuable phenomenon was found that the photocatalytic property of DMSs materials was positively correlated with their corrosive defense.In conclusion,this research provided a novel design idea for new high-efficiency Anticorrosion materials.

关键词： Mn-modified ZnO dilute magnetic solid solution network nanostructure Anticorrosion functional nanomaterials

Doublely-doped Mg-Al-Ce-V_(2)O_(7)^(4-)LDH composite film on magnesium alloy AZ31 for Anticorrosion

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Journal of Materials Science & Technology 2021年第5期64卷 66-72页

作者： Liang Wu Xingxing Ding Zhicheng Zheng Aitao Tang Gen Zhang Andrej Atrens Fusheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing400044China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing400044China School of Mechanical and Mining Engineering The University of QueenslandBrisbaneQld4072Australia

A doublely-doped layered double hydroxide(LDH)film was produced on an anodized magnesium alloy AZ31.The Ce-doped Mg-Al LDH film was prepared by in-situ hydrothermal treatment method,and the intercalation of vanadate was realized by ion-exchange reaction.The structure,morphology and composition of as-prepared LDH film were investigated by X-ray diffractometer,field-emission scanning electronic microscope and energy dispersive spectrometry.Results indicated that a uniform and compact LDH film was formed and the intercalation of Ce^(3+)and vanadate would change the crystal structure of LDHs.The results of the potentiodynamic polarization,electrochemical impedance spectra,hydrogen evolution and corrosion weight loss tests showed the Ce^(3+)and vanadate anions significantly improve the impedance of LDH film,and the active double-doped LDH film could effectively protect the magnesium substrate from corrosion.

关键词： Magnesium alloy Doublely-doped LDH film Vanadate Cerium Anticorrosion

Synthesis of Polyurethane/Poly(urea-formaldehyde) Double-shelled Microcapsules for Self-healing Anticorrosion Coatings

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Chinese Journal of Polymer Science 2020年第1期38卷 45-52,I0006页

作者： Yan Song Kai-Feng Chen Jing-Jing Wang Yuan Liu Tao Qi Guo Liang Li National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing WO 190China Xiamen Advanced Materials Academy of Luoyang Ship Material Research Institute Xiamen 361101China Science and Technology on Marine Corrosion and Protection Laboratory Qingdao 266101China

One-component, catalyst-free self-healing coatings with double-shelled polymer microcapsules have drawn considerable attention due to wide applications. In this work, the synthesis parameters of double-shelled polymer microcapsules and the mechanism of the self-healing process were systematically investigated. Apart from the chemical structure of the microcapsule shell, the shell thickness, the microcapsule size,and the core fraction could affect the self-healing Anticorrosion properties. The synthesis parameters were further optimized in terms of the agitation rate, p H, weight ratio of core to shell, and temperature. Under these conditions, the microcapsule shell consisting of a rough surface formed by poly(urea-formaldehyde) and a smooth inner wall by polyurethane was prepared. The size of the microcapsules and core fraction were calculated to be approximately 30 μm and 75%, respectively. The self-healing Anticorrosion coating incorporating as-synthesized microcapsules exhibited corrosion resistance in artificially scratched areas, which was further characterized by electrochemical impedance spectroscopy.

关键词： Double-shelled Microcapsules Anticorrosion Self-healing

Bio-inspired Superhydrophobic Self-healing Surfaces with Synergistic Anticorrosion Performance

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Journal of Bionic Engineering 2020年第6期17卷 1196-1208页

作者： Xiaona Yang Limei Tian Wei Wang Yong Fan Jiyu Sun Jie Zhao Luquan Ren Key Laboratory of Bionic Engineering Minitry of EducationJilin UniversityChangchun 130022China College of Chemistry Jilin UniversiyChangchun 130022China

The past decade has witnessed significant efforts in addressing the global metallic corrosion challenge,with a focus on avoiding or mitigating huge economic losses incurred by corrosion and on the development of protective coatings on metals.Herein,a synergistic Anticorrosion coating with both superhydrophobicity and self-healing properties was reported,through a facile replica molding method by mixing the polyvinylidene fluoride(PVDF)matrix with nano-sized SiO2 particles and 2-mercaptobenzothiazole(MBT)loaded halloysites(HNTs).The surface exhibits robust self-cleaning behavior under harsh conditions and high liquid repellence to withstand the osmosis of corrosive ions.The self-healing performance of the coating,due to the introduction of MBT-loaded HNTs,enhances the Anticorrosion capability,which is still valid once the protective layer is damaged.Potentiodynamic polarization(PDP)and Electrochemical Impedance Spectroscopy(EIS)measurements demonstrate that the synergetic effects in Anticorrosion performances significantly enhance the long-term corrosion protection of metals.Hence,this type of dual-action coating may find unique applications in metal corrosion resistance where both super-repellency and self-healing properties are desired.

关键词： superhydrophobic Anticorrosion self-healing corrosion inhibitor

Graphene-induced enhanced Anticorrosion performance of waterborne epoxy resin coating

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Frontiers of Materials Science 2020年第2期14卷 211-220页

作者： Huan-Yan XU Dan LU Xu HAN School of Materials Science and Engineering Harbin University of Science and TechnologyHarbin 150040China

In this work,waterborne epoxy resin E44 and graphene were employed as the matrix and nanofiller,respectively,to construct composite coatings with enhanced Anticorrosion performance.XRD pattern and TEM observation indicated that the obtained graphene had a stacked structure of few-layer graphitic sheets with numbers of wrinkles.SEM observations revealed that no defects or microcracks existed on the surface of graphene/epoxy coatings and the internal micropores and microcracks were filled by graphene.FTIR spectra displayed that all the characteristic absorption peaks were attributed to the epoxy resin cured with polyamide.The Tafel polarization curves showed that,as the graphene addition amount increased,the corrosive potential increased and the corrosive current decreased.ESI results proved that the addition of graphene into epoxy coatings could not only increase the impedance arc in Nyquist plots,but also increase the impedance modulus at low frequency.Finally,the enhanced Anticorrosion mechanism was proposed and discussed.

关键词： graphene waterborne epoxy Anticorrosion electrochemical property

Fabrication of superhydrophobic reduced-graphene oxide/nickel coating with mechanical durability,self-cleaning and Anticorrosion performance

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Nano Materials Science 2020年第2期2卷 151-158页

作者： Zengguo Bai Bin Zhang Key Laboratory for Anisotropy and Texture of Materials Ministry of EducationSchool of Materials Science and EngineeringNortheastern University3-11 Wenhua RoadShenyang110819PR China

There is a great challenge to fabricate superhydrophobic coating with excellent mechanical durability and corrosion resistance.Inspired by the pinecone-shaped structure,a novel reduced-graphene oxide(rGO)/Ni composite coating with pinecone-like micro/nanostructures was fabricated successfully on a stainless steel substrate using a simple electrodeposition method combining Ni pre-deposition and an elevated current assistant approach.The results show that the coating is of self-cleaning and superhydrophicity with a water contact angle(CA)of 162.7°±0.8°and a sliding angle(SA)of 2.5°±1.0°.Importantly,the coating still maintains the excellent self-cleaning and superhydrophicity,water CA of 155.8°±1.2°and SA of 5.9°±1.2°,even after 100-cycle mechanical abrasion.Meanwhile,the coating also exhibits good Anticorrosion performance in 3.5 wt%NaCl solution,with 99.98%inhibition efficiency.The simple fabrication method may provide a cost-effective way to prepare mechanically durable,anticorrosive,self-cleaning and superhydrophobic coatings on metal substrates.

关键词： rGO/Ni composite coating Electrodeposition Superhydrophobic Mechanical abrasion Anticorrosion

Soluble, Antibaterial, and Anticorrosion Studies of Sulfonated Polystyrene/Polyaniline/Silver Nanocomposites Prepared with the Sulfonated Polystyrene Template

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Chinese Journal of Chemistry 2017年第7期35卷 1157-1164页

作者： Guangfu Liao Yan Gong Changfeng Yi Zushun Xu Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education Key Laboratory for The Green Preparation and Application of Functional Material Hubei University Wuhan Hubei 430062 China College of Chemistry and Chemical Engineering Fuzhou University Fuzhou Fujian 350108 China

In this work, multifunctional sulfonated polystyrene/polyaniline/silver （SPS/PANI/Ag） nanocomposites are prepared through using sulfonated polystyrene （SPS） spheres as templates and utilizing polyvinylpyrrolidone （PVP） as reducing agent and stabilizing agent. Our method is an environmentally friendly method because no toxic rea- gents are added during the preparation process. Fourier transform infrared spectrum （FTIR）, field emission scanning electron microscopy （FESEM）, and energy disperse spectroscopy （EDX） results confirmed the formation of PS spheres, SPS spheres, SPS/PANI nanocomposites, and SPS/PANI/Ag nanocomposites. Powder X-ray diffraction （XRD） patterns indicate that the obtained Ag nanoparticles are crystalline. Solubilities measurements show that SPS/PANI/Ag nanocomposites have improved solubilities when compared to pure PANI in common organic sol- vents and deionized water. Antibacterial studies show that SPS/PANI/Ag nanocomposites can greatly inhibit the growth of Escherichia coli and Staphylococcus aureus. Anticorrosion studies show that the incorporation of SPS/PANI/Ag nanocomposites in waterborne alkyd resin can greatly promote＇the anticorrosive efficiency of water- borne alkyd resin.

关键词： sulfonated polystryrene polyaniline silver antibacterial Anticorrosion

Charge storage coating based triboelectric nanogenerator and its applications in self-powered Anticorrosion and antifouling

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Frontiers of Materials Science 2023年第1期17卷 163-173页

作者： Zhitao Zhang Yupeng Liu Min Feng Nannan Wang Changhe Du Shu Peng Yufei Guo Yongjian Liu Ying Liu Daoai Wang Institute of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Center of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of SciencesBejing 100049China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou730000China QingdaoCenter ofResourceChemistry and NewMaterials Qingdao266100China Institute of Sustainability for Chemicals Energy and Environment(ISCE2)A*STARSingapore 138634Singapore

As a novel energy-harvesting device,a triboelectric nanogenerator(TENG)can harvest almost all mechanical energy and transform it into electrical energy,but its output is low.Although the micro-nano structures of triboelectrode surfaces can improve their output efficiency,they lead to high costs and are not suitable for large-scale applications.To address this problem,we developed a novel TENG coating with charge-storage properties.In this study,we modified an acrylic resin,a friction material,with nano-BaTiO_(3) particles and gas phase fluorination.The charge-trapping ability of nanoparticles was used to improve the output of TENG.The short-circuit current and the output voltage of coating-based TENGs featuring charge storage and electrification reached 15μA and 800 V,respectively,without decay for longtime working.On this basis,self-powered Anticorrosion and antifouling systems are designed to reduce the open circuit potential of A3 steel by 510 mV and reduce the adhesion rate of algae on the surface of metal materials.This study presents a high-output,stable,coating-based TENG with potential in practical applications for Anticorrosion and antifouling.

关键词： triboelectric nanogenerator charge-trapping Anticorrosion antifouling