COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Rui Gou,Yong Li,Qilong Chen,Sha Wang,Dan Sun,Changhua Li,Xianmin Gong,Yi He
Metal corrosion causes a lot of waste of resources, and the protection of metals from corrosion is becoming increasingly important. In this study, zeolite-imidazole (ZIF-67) was grown on the surface of Co-MOF for the first time by a one-step (complexation) method. 2-Mercaptobenzimidazole (MBI) was then loaded into the inner cavity of ZIF-67, resulting in the formation of a new composite material, Co-MOF@ZIF-67@MBI. The modified Co-MOF exhibits excellent interfacial compatibility with the water-based epoxy resin, and the Co-MOF@ZIF-67@MBI composite coating demonstrates robust anti-corrosion properties. Following a 60-day immersion period, the electrochemical experiment demonstrated that the corrosion resistance modulus of the Co-MOF@ZIF-67@MBI composite coating reached 10 8 Ω cm², indicating that the coating effectively enhanced the corrosion resistance of the coating and significantly extended the service life of the coating.
研究领域:
材料科学
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腐蚀与防护
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复合材料
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Yuchi Dong,Yalan Liang,Haoyu Gao,Xianyu Jiang,Linbo Zhang,Liangjun Yin,Le Yuan,Xin Wang,Guo Jing
Magnetic metal absorbers will inevitably suffer from corrosion and aging failure in actual application environments (air, salt spray, acid/alkali, etc.), resulting in serious deterioration of their performance. Using inert, densified materials to modify absorber surface is an effective and feasible solution. Herein, a core-shell structure carbonyl iron composite absorbent (CIP@2-MI/MBI/EP) was prepared by in-situ polymerization with 2-methylimidazole (2-MI), 2-mercaptobenzimidazole (MBI), epoxy resin (EP) as the precursor, and carbonyl iron powder (CIP) as the core. The core-shell structure has enhanced both of corrosion resistance and microwave absorbing performance due to the effect of alleviating the intrusion of corrosive media and low dielectric characteristics of the corrosion inhibitors MBI and EP. The results of electromagnetic parameter test exhibited the minimum reflection loss(RL) of the modified absorbent at 13.78 GHz is -69.57 dB, and the thickness is only 1.65 mm. Electrochemical tests revealed the corrosion potential (E corr )of the composite powder shifted positively from -0.680 V to -0.012 V compared to original CIP. The corrosion current (i corr ) decreased from 59.1 μA/cm 2 to 0.1562 μA/cm 2 , and the annual corrosion rate (CR) decreased by 2 orders of magnitude to 0.0223 mil/year. These results attest to the exceptional corrosion resistance of the composites. In addition, the results of salt spray experiments revealed that the morphology and composition of CIP@2-MI/MBI/EP absorbers remained largely unchanged after 720 H salt spray test. Meanwhile, the acid resistance test (PH=1) further demonstrated the outstanding anti-corrosion performance of the composites. The research offers a new option for the development and design of high-efficiency microwave absorbent with robust corrosion resistance.
研究领域:
材料科学
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微波吸波材料
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腐蚀科学
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电磁波吸收
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表面工程
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产品关联
DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 16
·2265
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IF 4.9
Xiaohong Ji,Minghui Yang,Huiwen Tian,Jin Hou,Jingqiang Su,Zhen Wang,Zixue Zhang,Yuefeng Tian,Liangliang Zhou,Guanghua Hu,Yunfei Yang,Jizhou Duan,Baorong Hou
We present a straightforward emulsion-induced interfacial anisotropic assembly method for in- situ synthesis of bowl-shaped, self-encapsulated mesoporous polydopamine (BMPDA) nanocontainers (M-M@P) loaded with 2-mercaptobenzimidazole (2-MBI). Results showed that the loading capacity of the bowl-shaped mesoporous polydopamine reaches 24 wt.%. The M-M@P exhibits a cumulative MBI release of 91.61% after immersion in a 3.5 wt.% NaCl solution at pH = 2 for 24 h, accompanied by a corrosion inhibition efficiency of 95.54%. Additionally, the acid-responsive M-M@P not only enables controlled release of MBI but also synergistically promotes the formation of a protective film on the carbon steel substrate via the chelation of PDA-Fe3+, thereby enhancing the self-healing performance of waterborne epoxy coatings.
研究领域:
材料科学
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腐蚀工程
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聚合物涂层
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纳米技术
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智能材料
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
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2026
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IF 4.6
Qian Yang,Yunluo Wang,Futing Sun,Zesen Gao,Wen Chen,Yan Yang,Xun Yao,Minghui Wang,Yihui Xu,Lianjun Wang,Haijie Chen,Wan Jiang
Organic-inorganic hybrid metal halides (OIHMHs) have attracted considerable attention because of their superior optoelectronic properties and structural versatility, yet one-dimensional (1D) OIHMHs remain the least studied relative to their 0D, 2D, and 3D counterparts. Here, a new 1D blue-emitting hybrid cadmium chloride phosphor, (MBI)CdCl4·H2O, was constructed using 2-methylbenzimidazole (MBI) as the organic ligand. It crystallizes in the monoclinic P21/c space group, consisting of distorted [CdCl6]4– octahedra connected via edge sharing. Incorporation of Sb3+ ions with stereochemically active 5s2 lone-pair electrons yields (MBI)Cd0.7Sb0.2Cl4·H2O, which exhibits highly efficient yellow emission with a photoluminescence quantum yield (PLQY) of 92.0%. In addition, doping with high-spin Mn2+ ions produces photoluminescent (MBI)Cd0.85Mn0.15Cl4·H2O crystals with a PLQY of 16.7%. Leveraging the tunable luminescence of this Cd halide, these materials were further demonstrated in anticounterfeiting and information encryption applications, highlighting a promising avenue for the development of functional metal halides.
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Kaini Yang,Xiangyu Wang,Iseult Lynch,Zhiling Guo,Peng Zhang,Lisi Wu
Nano zero-valent iron (NZVI) is an ideal material for treating chromium (VI). However, the NZVI's low loading and corrosion susceptibility in acidic Cr-containing industrial wastewater is the most pressing issue. Therefore, it is necessary to explore a method to construct novel NZVI composites with high loading, corrosion resistance, and outstanding activity. In this study, green 2-mercaptobenzimidazole (MBI) was employed for the first time as a corrosion inhibitor for NZVI to form a protective coating through chemisorption, thus blocking the corrosion of NZVI by reaction medium. Meanwhile, a novel multiphase green crystallization-assisted pore formation freeze-drying method was constructed to synthesize UiO-66-NH 2 regulated 3D network porous polyacrylonitrile (PAN) cryogel film for stabilizing NZVI, which is intended to remove Cr(VI) effectively and without secondary contamination. The synthesized MBI-Fe 0 @MOF/PAN possessed prominent activity, corrosion resistance, and considerable NZVI loading (45.9 mg/g). The Cr(VI) removal could still reach 82.7 % after 6 cycles, and the level of total dissolved iron ions was lowered to 0.255 mg/L. MBI-Fe 0 @MOF/PAN for rapid removal of Cr(VI) may be ascribed to the synergistic reaction of rapid protonation of MBI and strong reduction of NZVI. This study constructed the MBI corrosion-resistant interface and 3D PAN cryogel film concepts not only to broaden the horizons of designing efficient NZVI catalytic materials but also to promote the development of treatment technologies for acidic Cr-containing industrial wastewater.
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DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2022
·Vol. 78
·期 11
·4557-4568
·
IF 4.462
Delong Wang,Min Li,Chunxia Yuan,Yali Fang,Zhijia Zhang
BACKGROUND The natural 1,8-dihydroxynaphthalene (DHN) melanin biosynthesis inhibitors (MBIs) are one of the promising approaches to the integrated management of plant diseases but have received scarce attention until now. Herein, to explore the natural DHN MBIs used in the control of northern corn leaf blight (NCLB), a library of 53 essential oil compounds was used to screen the MBIs against Exserohilum turcicum , the causal pathogen of NCLB, using tricyclazole as a reference compound. RESULTS The results of morphological change in the colony, thermogravimetric analysis, ultraviolet–visible spectroscopy, and transmission electron microscopy confirmed that guaiacol could effectively inhibit the melanin production at 50 μg/mL under in vitro conditions. The in vitro bioassay results indicated that this inhibition effect was concentration-dependent and the minimum inhibition concentration of guaiacol was 50 μg/mL. The in vivo experimental results demonstrated that guaiacol significantly inhibited appressorium formation and penetration on corn leaf sheaths at the concentration of 500 μg/mL. The pot experiment results revealed that there were no differences between guaiacol (500 μg/mL) and tricyclazole (100 μg/mL) in control efficacy. The enzymatic assay suggested that guaiacol might exert the activity through inhibiting DHN polymerization to form melanins, which was distinct from tricyclazole. CONCLUSIONS Taken together, this study screened out guaiacol as a natural MBI from 53 essential oil compounds and verified its effectiveness in the control of NCLB at 500 μg/mL. Above all, this research opened an avenue for exploring natural DHN MBIs in the integrated management of plant diseases. © 2022 Society of Chemical Industry.
研究领域:
植物病理学
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农学
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植物化学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Zhongyu Jing,Wenli Su,Yu Fan
The development of a new system for the electrochemical carbon dioxide reduction reaction (ECO 2 RR) to methane (CH 4 ) is challenging, and novel conductive metal organic frameworks (c-MOFs) for efficient ECO 2 RR to CH 4 are critical to this system. Here, we report a novel c-MOF, copper-pyromellitic dianhydride-2-methylbenzimidazole (Cu-PD-2-MBI), in which the introduction of electron-withdrawing 2-methylbenzimidazole (2-MBI) into the copper-pyromellitic dianhydride (Cu-PD) interlayer elevated the valence of copper (Cu) ions, which improved the ECO 2 RR performance of Cu-PD-2-MBI. Cu-PD-2-MBI was tested in a flow cell, and the Faradaic efficiency of CH 4 reached 73.7 %, with a corresponding partial current density of −428.3 mA·cm −2 at −1.3 V, which was higher than those of most reported Cu-based catalysts. Further exploration via theoretical calculations indicated that the intercalated 2-MBI in Cu-PD-2-MBI induced a shift in the d-band center in the Cu sites from −2.63 to −1.86 eV and reduced the formation energy of the *COOH and *CHO intermediates in the process of generating CH 4 compared with those of the reference Cu-PD catalyst.
研究领域:
电化学
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材料科学
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催化
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环境科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）