MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2024
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IF 4.2
Yang Guo,Rui Zhou
Corrosion-resistant ferromagnetic absorbers (FMAs) with self-healing properties are crucial for enhancing their durability under harsh conditions. Herein, we fabricated lychee-like FeSiAl (FSA)@C@SiO 2 @1H-Benzotriazol (BTA) coupled with multiple heterogeneous interfaces by coating FSA with a C@SiO 2 @BTA layer using sol-gel, thermal reduction, and molecular encapsulation techniques. The FSA@C@SiO 2 @BTA showed superior microwave absorption (MA) performance than FSA, with a widest absorption bandwidth of 10.44 GHz at 1.98 mm and a maximum reflection loss of −57.81 dB at 2.98 mm. The enhanced MA performance was due to the better impedance matching and the synergistic effects of interfacial and dipole polarization induced by the C@SiO 2 @BTA layer. Moreover, the FSA@C@SiO 2 @BTA exhibited a remarkable corrosion resistance, with a corrosion rate of 3.28 × 10 −10 m/s, which was two orders of magnitude lower than that of FSA, and a corrosion protection efficiency of 99.0 %. The epoxy resin coating containing FSA@C@SiO 2 @BTA also demonstrated a self-healing ability within 5 min after being damaged mechanically. This study presents a novel model that integrates MA, corrosion resistance, and self-healing, heralding new avenues for developing corrosion-resistant FMAs in marine applications.
研究领域:
材料科学
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腐蚀与防护
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2021
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IF 5.161
Peng Xie,Yi He,Fei Zhong,Chen Zhang,Chunlin Chen,Hongjie Li,Yang Liu,Yang Bai,Jingyu Chen
Smart self-healing coatings with the active healing ability are the current research hotspot in the field of metal corrosion protection. In this work, we designed a novel corrosion protection system of waterborne epoxy. Under alkaline condition, Cu-BTA complexes were deposited on the surface of MoO 4 2− intercalated Mg-Al Layered double hydroxide (MIH) by electrostatic assembly as pH-sensitive gatekeepers. When MIH@Cu-BTA(MIHC) nanosheets were filled into the coatings, the layered structures of Layered double hydroxide(LDH) improved the barrier properties of the coatings to prevent corrosive ions penetration. Meanwhile, the excellent ion exchanges ability of LDH could be used to reduce the concentration of Cl- ions, both of MoO 4 2− ions and BTA could release quickly from MIHC in an acidic environment to achieve the self-healing effect. All of them cooperated to synergistically improve the anti-corrosion performance of the coating. The long-term protective performances and self-healing properties of WECs which loaded nano-containers were evaluated by salt spray test and electrochemical experiment. The impedance results indicate that the addition of MIHC(0.5 wt.%) increases the impedance of pure epoxy coating from 1.579 × 10 8 to 1.041 × 10 9 Ω cm 2 .
研究领域:
材料科学
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腐蚀与防护
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涂层技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2024
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IF 4.1
Honghe Song,Haiyan Zhu,Rui Wang,Shumei Wen,Chenghu Yan,Wei Cong
We propose a facile method for preparing polyvinylidene fluoride (PVDF) membranes with exceptional selectivity for rare earth ions and stability by UV irradiation technology using 3,3′, 4,4′-benzophenone tetracarboxylic acid (BTA) as the grafted materials. The grafting of BTA onto the membrane surface was confirmed through Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The selection factors of PVDF- g -BTA membranes for Dy 3+ over Na + , K + , Ca 2+ , and Mg 2+ were 140.57, 114.16, 74.23, and 86.25, respectively. The adsorption capacity of the PVDF- g -BTA membranes remained above 80 % following five adsorption–desorption cycles, and the contact angle remained stable throughout the 30 days of immersion.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
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2023
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IF 8.3
Jingbao Wang,Jingmao Zhao,Mohammad Tabish,Fan Shi,Baomin Fan,Lijun Peng,Qi Cheng
Filiform corrosion (FFC) challenges the application of Zn-Mg-Al coated steel (ZMA-steel). Herein, a self-healing coating loaded with functionalized mesoporous CeO 2 (mCeO 2 ) was developed to suppress FFC for ZMA-steel in saline media. mCeO 2 of large specific area readily accommodated benzotriazole and immobilized on g-C 3 N 4 generating a nanofiller (BTA@mCeO 2 /g-C 3 N 4 ) for epoxy matrix (EP). Strong barrier of lamellar g-C 3 N 4 , releasing BTA from nanofiller and generating Ce cations accounted for the long-term corrosion-resistance and self-healing effect of BTA@mCeO 2 /g-C 3 N 4 /EP system for ZMA-steel. Through taking full advantages of CeO 2 -based nanofiller, this work may provide an intelligent coating to solve FFC of ZMA-steel.
研究领域:
材料科学
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腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
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2022
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IF 9.231
Qian Wang,Yujie Wu,Wei Guo,Feifang Zhang,Feng Zhang
A new method that utilizes a magnetic covalent organic framework (Fe 3 O 4 @BTA-TAPM) as a selective solid-phase extraction adsorbent has been developed for the simultaneous preconcentration of trace eleven kinds of strobilurin fungicides (SFs) in foods combined with ultra-high performance liquid chromatography-tandem mass spectrometry. The preconcentration conditions were optimized, including the adsorbent amount, extraction time, pH value, shaking time, elution solvent, desorption time and the interference ions. The maximum adsorption capacity of the adsorbent was ranging from 42.84 mg g −1 to 54.18 mg g −1 for eleven SFs. The low limits of detection were 0.003–0.072 μg kg −1 . The recoveries of eleven SFs spiked at levels of 0.25–1000 μg kg −1 ranged from 80.2% to 109.3%, and the relative standard deviations were <6.8% (n = 3). The utility of the adsorbent was demonstrated to determine traces SFs in four different samples.
研究领域:
分析化学
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食品科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Xiaohu Zhang,Guangyu Zhu,Fuyan Kang,Gege Zhang,Qianyun Tan,Min Wu,Yong Tan,Fa-Qian Liu
Herein, two-dimensional Zn(Bim)(OAc) nanosheets (ZNS) were prepared using ultrasonication and surfactant-assisted methods. Subsequently, it was used as nanocontainer loaded with benzotriazole (BTA) corrosion inhibitor to fabricate BTA@ZNS nanocomposites with pH-controlled release characteristics. The morphology analysis exhibits that BTA@ZNS has a distinct lamellar structure. UV spectrophotometer measurements indicated the release rate of BTA reached 94.38 % in 24 h at pH=1. Adding BTA@ZNS as fillers into epoxy resin (EP) coating can form BTA@ZNS/EP composite coating with active anti-corrosion properties. Electrochemical impedance spectroscopy (EIS) demonstrates that BTA@ZNS/EP coating has superior corrosion resistance than other EP-based coatings. The enhanced anti-corrosion performance is ascribed to the barrier effect and acid-responsive controlled release of BTA@ZNS.
研究领域:
材料科学
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腐蚀科学
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纳米技术
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涂层技术
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Chenyang Zhao,Yi Huang,Yue Li,Chen Wang,Wenlin Yuan,Di Cheng,Tao Shen,Ji Zhang,Jie Liu,Chao Yang,Chunchun Wu,Qianhong Shen,Hui Yang
Nanocontainers encapsulating corrosion inhibitors are commonly incorporated into organic coatings to enable self-healing effects, thereby ensuring long-term anticorrosion performance. In this study, a novel dual corrosion inhibitor-loaded self-healing nanocontainer with core-shell structure was proposed for fabricating composite waterborne epoxy coatings with both active and passive corrosion prevention properties. The nanocontainer, named BTA-ZIF-8@LDH-Mo, was synthesized through the in-situ growth of molybdate-intercalated ZnAl layered double hydroxide (LDH-Mo) on the surface of 1H-benzotriazole-inbuilt zeolitic imidazolate framework (BTA-ZIF-8). Potentiodynamic polarization results showed that the I corr of bare Q235 carbon steel immersed in a 3.5 wt% NaCl solution decreased from 4.658 × 10 −6 A/cm 2 to 1.274 × 10 −6 A/cm 2 after introducing BTA-ZIF-8@LDH-Mo nanocontainers, resulting in a superior corrosion inhibition efficiency of 72.65 %. Electrochemical impedance spectroscopy further demonstrated that the |Z| f=0.01Hz of epoxy coating doped with BTA-ZIF-8@LDH-Mo reached 4.24 × 10 9 Ω·cm 2 after 42 d of immersion in 3.5 wt% NaCl solution, approximately 30 times higher than that of pure EP coating. Moreover, investigations on artificially scratched coatings indicated that the incorporation of BTA-ZIF-8@LDH-Mo nanocontainers effectively mitigated the corrosion process by forming an inhibiting layer on the metal substrate that impeded the corrosion process. The dual corrosion inhibitor strategy relies on the synergistic action of BTA pre-loaded in ZIF-8 nanoparticles and molybdate ( MoO 4 2- ) intercalated in LDH interlayers for active corrosion protection . Additionally, the nanocontainers enhance passive protection by elongating the diffusion paths of corrosive media and trapping chloride ions. This nanocontainer design offers a facile strategy for fabricating a smart coating with the excellent anticorrosion properties.
研究领域:
材料科学
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腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）