TRIBOLOGY INTERNATIONAL
·
2021
·
IF 4.872
Dongmei He,Meng Cai,Han Yan,Qilan Lin,Xiaoqiang Fan,Lin Zhang,Minhao Zhu
Multiple advantages of Ti 3 C 2 T x MXene are of significance to enhance the mechanical properties of organic coating . Herein, few-layer amino-functionalized Ti 3 C 2 T x nanosheets (k-Ti 3 C 2 ) were introduced into interpenetrating polymers network (IPN) for constructing k-Ti 3 C 2 /IPN composite coatings , and their tribological properties were investigated in depth. The composite coating with 0.75 wt% k-Ti 3 C 2 nanosheets displays excellent tribological behaviors under extremely operating conditions, like the lowest COF (0.18) and the highest OCP value (−0.28 V) under tribocorrosion condition. Such excellent tribological properties mainly depend on good dispersion and interfacial compatibility of k-Ti 3 C 2 nanosheets in IPN matrix, as well as amino functionalized Ti 3 C 2 T x nanosheets as barrier to external damage. This work highlights a pathway to solve the wear/corrosion problem of organic coatings under extreme conditions.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Yandi Hu,Xulin Jiang,Suona Zhang,Dawei Cai,Zehao Zhou,Chuan Liu,Xiaobing Zuo,Sang Soo Lee
Iron/chromium hydroxide coprecipitation controls the fate and transport of toxic chromium (Cr) in many natural and engineered systems. Organic coatings on soil and engineered surfaces are ubiquitous; however, mechanistic controls of these organic coatings over Fe/Cr hydroxide coprecipitation are poorly understood. Here, Fe/Cr hydroxide coprecipitation was conducted on model organic coatings of humic acid (HA), sodium alginate (SA), and bovine serum albumin (BSA). The organics bonded with SiO2 through ligand exchange with carboxyl (–COOH), and the adsorbed amounts and pKa values of –COOH controlled surface charges of coatings. The adsorbed organic films also had different complexation capacities with Fe/Cr ions and Fe/Cr hydroxide particles, resulting in significant differences in both the amount (on HA > SA(–COOH) ≫ BSA(–NH2)) and composition (Cr/Fe molar ratio: on BSA(–NH2) ≫ HA > SA(–COOH)) of heterogeneous precipitates. Negatively charged –COOH attracted more Fe ions and oligomers of hydrolyzed Fe/Cr species and subsequently promoted heterogeneous precipitation of Fe/Cr hydroxide nanoparticles. Organic coatings containing –NH2 were positively charged at acidic pH because of the high pKa value of the functional group, limiting cation adsorption and formation of coprecipitates. Meanwhile, the higher local pH near the –NH2 coatings promoted the formation of Cr(OH)3. This study advances fundamental understanding of heterogeneous Fe/Cr hydroxide coprecipitation on organics, which is essential for successful Cr remediation and removal in both natural and engineered settings, as well as the synthesis of Cr-doped iron (oxy)hydroxides for material applications.
研究领域:
环境科学
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土壤学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Green Processing and Synthesis
·
2024
·Vol. 13
·期 1
·
IF 3.8
Nguyen Tien Dung,Duong Tra My,Nguyen Thuy Chinh,Nguyen Quy Dai,Vu Dinh Hieu,Tran Thanh Thuy,Nguyen Kim Thoa,Thai Hoang
This work concentrated on the decoration of AgNPs to yellow phosphorus slag (YPS) using both chemical (NaBH 4 ) and biological ( Areca catechu nut and Jasminum subtriplinerve leaf extracts) reducing agents, as well as its use as antibacterial and enhancement additives for organic coatings based on acrylic emulsion resin. It is the first study about the decoration of AgNPs on the surface of YPS using bio-reduction agents ( A. catechu nut and J. subtriplinerve leaf extracts). The characteristics of YPS decorated by AgNPs (YPS@AgNPs) were determined using attenuated total reflectance infrared spectroscopy, scanning electron microscopy, X-ray diffraction, ultraviolet-visible spectroscopy and dynamic light scattering methods. To quantify the amount of AgNPs in YPS@AgNPs, atomic absorption spectroscopy was used. The results of YPS@AgNPs fabrication confirmed that the above green reduction agents had a higher efficiency and were more suitable than the chemical reduction agent (NaBH 4 ). Moreover, the ability to inhibit the growth of bacteria strains of YPS@AgNPs using the J. subtriplinerve leaf extract as a reducing agent gave the best result among the three agents. In particular, the bactericidal activity of YPS@AgNPs against the new marine bacterium, Pseudomonas stutzeri B27 , was evaluated, and it was found that YPS@AgNPs can inhibit the growth of an antibiotic-resistant bacterium, P. stutzeri B27 . They enhance not only the mechanical properties but also the bactericidal ability of the water-borne acrylic resin coating.
Graphical abstract
研究领域:
材料科学
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环境科学
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微生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Shuaiwei Peng,Tianguan Wang,Guang Huang,Zhuofu Tang,Ziya Shao,Zhiyuan Feng,Bing Lei,Guozhe Meng,Honglei Guo
Organic coatings are commonly used to protect the metals or alloys from corrosion. However, defects such as scratches or natural aging of the coating can induce unexpected diffusion paths for the corrosive media, so the wettability of repairing liquids and the selection of suitable repairing liquids are crucial. In this study, we systematically investigated the capillary impregnation phenomenon by using liquids with various surface tensions and glass capillaries with different surface energies. We utilized this regularity to instruct the defects repairing process. By using an ultra-depth field microscope, scanning electron microscope, and electrochemical analysis, two kinds of repairing liquids, high surface tension liquid (HSTL) and low surface tension liquid (LSTL), were investigated for repairing man-made defects of coatings. Our results showed that the substrate and the surface energy of the liquids significantly influence the infiltration of the repair liquid. By effectively leveraging the relationship between the repair liquid and the substrate, the repair agent can not only establish a uniform and dense repairing layer but also notably enhance the corrosion resistance of the defective coating. This study provides valuable insights into the repairing of coating defects, as well as liquids transportation, microfluidic chip design, and surface modification of microporous materials.
研究领域:
材料科学
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腐蚀与防护
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 46
·期 4
·1643-1649
·
IF 3.591
Zhe Shi,Taojie Lu,Jian Zhang,Zhaoyang Zhu,Yidong Xu,Debin Xia,Yinghui Hu,Kaifeng Lin,Yulin Yang
Alpha-aluminum hydride (α-AlH3) is an excellent high-energy additive for solid propellants because of its high hydrogen content (10.8 wt%) and energy density, low decomposition temperature, and good combustion performance. However, the application of α-AlH3 is limited by its poor thermal stability and hygroscopicity. In this work, we present a facile method to improve the thermal stability and hygroscopicity of α-AlH3 by coating the α-AlH3 surface with an organic layer using vinyltrimethoxysilane (A171). The α-AlH3@A171 composite shows enhanced performance in terms of thermal stability and hygroscopic properties. In the constant temperature experiments at 100 °C, the required time to lose 1% mass of α-AlH3@A171 is 561.5 minutes, showing excellent stability. More importantly, the resulting α-AlH3@A171 composite exhibits an increased activation energy of 4.32 kJ mol−1 after stabilization. Furthermore, the α-AlH3@A171 composite also shows excellent performance in resisting water erosion, and the hydrophobic angle increases from 24.23° to 96.94° after the organic layer is coated on the α-AlH3 surface. The hygroscopic weight gain of α-AlH3@A171 was only 0.89% when stored at 30 °C and 80% relative humidity for 30 days, which was lower than that of α-AlH3 (23.1%). This work provides a convenient method for the safe application of α-AlH3 in the field of solid propellants.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 21
·4704
·
IF 4.967
Jun Tang,Yali Tan,Fugang Qi,Biao Zhang,Ao Zhou,Nie Zhao,Xiaoping Ouyang
In air and railway transportation, corrosion and wear lead to the rapid failure of equipment. Epoxy (EP)-based coatings are widely used in research on the anti-corrosion of organic coatings, but their application as materials for wear resistance is limited due to their non-abrasive properties. In this study, a novel high-performance epoxy-based composite coating was developed through the self-assembly of silicon carbide (SiC) and graphene oxide (GO) and the tuning of the interfacial structure with epoxy resin. The coatings were comprehensively characterized, including their electrochemical behavior, a salt spray test, and friction and wear experiments, and the optimal addition ratio of SiC-G@GO (SiC-G@GO was prepared by the self-assembly of γ-(2,3-epoxypropoxy) propytrimethoxysilane (KH560)-modified SiC (SiC-G) on the surface of GO sheets) in the epoxy coatings was explored. Benefiting from the labyrinth effect and their rolling-friction-like microstructure, the 1 wt% SiC-G@GO/EP coating exhibits excellent wear and corrosion resistance. Compared with pure epoxy resin, the 1 wt% SiC-G@GO/EP coating increased by 4 orders of magnitude after 10 days of immersion. The average friction coefficient was 41.5% lower than that of the pure EP coating, and the wear rate was 56.6% lower. This research has positive implications for the development and application of anti-corrosion and wear-resistant organic coatings.Keywords:corrosion resistance;tribological properties;composite material;organic coatings;interface regulation
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Bingqiao Wang,Yang Wu,Ying Liu,Youbin Zheng,Yupeng Liu,Chenguang Xu,Xiang Kong,Yange Feng,Xiaolong Zhang,Daoai Wang
Liquid–solid triboelectrification technology provides a new way to collect hydropower, while the high cost, complexity, and easily damaged microstructures of the triboelectric nanogenerator electrode materials highly limit their practical applications. In this study, a new type of organic coating triboelectric nanogenerator is fabricated using acrylate resin as the friction layer material. To further improve the solid–liquid triboelectrification performance and the hydrophobicity of the coating, fluorine-containing materials were added to the acrylic resin. As a non-microstructure-dependent film, its preparation process is simple and large area prepared, which can be achieved by modifying some commonly used anticorrosion and antifouling coatings in engineering. This packaged organic coating triboelectric nanogenerator provides good stability and high-output performance, which can easily light several commercial light-emitting diodes (LEDs) on a model ship by collecting the wave energy during the voyage. This new type of triboelectric nanogenerator based on the coating material has the advantages of simple process, low cost, and large-area preparation, which combines the performance of the coating itself with the power generation function, and have potential promising practical applications in ocean energy collection and utilization, self-powered sensing, and other fields.
研究领域:
能源材料
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纳米技术
·
海洋工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Batteries-Basel
·
2024
·Vol. 10
·期 12
·420
·
IF 4.6
Fujie Li,Hongfei Zhang,Xuehua Liu,Binghui Xu,Chao Wang
Aqueous zinc-ion batteries (AZIBs) have emerged as highly promising options for large-scale energy storage systems due to their cost-effectiveness, substantial energy capacity, and improved safety features. However, the Zn anode faces challenges such as self-corrosion and dendrite formation, which limit its practical use in AZIB applications. In this work, a simple blade-coating method was used to successfully coat poly (vinylidene fluoride–hexafluoro propylene) (PVDF-HFP) on the Zn anode. The coated Zn anode (P-Zn) displayed a stable cycling performance (700 h) at 1 mA cm−2current density in the symmetric cell. In addition, the full cell using MnO2as the cathode and P-Zn as the anode retained almost full capacity even after 1400 cycles at 2C, far outperforming the full cell using the unmodified Zn anode with only 50% capacity retention after 600 cycles. In situ optical observations of Zn deposition demonstrate that the special organic coating significantly enhances the uniform deposition of Zn2+, thus effectively mitigating corrosion and hydrogen evolution. Density Functional Theory (DFT) calculations show that the PVDF-HFP coating effectively narrows the adsorption energy gap between the P-Zn (002) and (101) planes, leading to the homogeneous deposition of Zn2+with fewer Zn dendrites. A simple and feasible strategy for designing ultra-stable AZIBs by coating an organic protective layer on the Zn surface is provided by this work.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Minerals Metallurgy and Materials
·
2024
·Vol. 32
·期 1
·119-126
·
IF 5.6
Wang Xiaoxue,Jin Lulu,Wang Jinke,Wang Rongqiao,Liu Xiuchun,Gao Kai,Sun Jingli,Yuan Yong,Ma Lingwei,Qian Hongchang,Zhang Dawei
The atmospheric corrosion monitoring (ACM) technique has been widely employed to track the real-time corrosion behavior of metal materials. However, limited studies have applied ACM to the corrosion protection properties of organic coatings. This study compared a bare epoxy coating with one containing zinc phosphate corrosion inhibitors, both applied on ACM sensors, to observe their corrosion protection properties over time. Coatings with artificial damage via scratches were exposed to immersion and alternating dry and wet environments, which allowed for monitoring galvanic corrosion currents in real-time. Throughout the corrosion tests, the ACM currents of the zinc phosphate/epoxy coating were considerably lower than those of the blank epoxy coating. The trend in ACM current variations closely matched the results obtained from regular electrochemical tests and surface analysis. This alignment highlights the potential of the ACM technique in evaluating the corrosion protection capabilities of organic coatings. Compared with the blank epoxy coating, the zinc phosphate/epoxy coating showed much-decreased ACM current values that confirmed the effective inhibition of zinc phosphate against steel corrosion beneath the damaged coating.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Haoyu Ma,Baogang Zhao,Zhuobin Han,Mengjia Yu,Kexin Liu,Zhongting Wang,Bingqing Yan,Yinghao Zhou,Xin Feng,Rongrong Jia,Yin Zhao,Zhuyi Wang,Yumei Wang,Li Lu,Shuai Yuan,Liyi Shi,Yingying Lv
Silicon (Si) based anode materials for lithium ion (Li + ) batteries have garnered significant attention due to their high specific capacity, low lithium insertion potential, but higher cost than usual graphite anode. The generation of Si scrap from the slicing of photovoltaic Si leads to substantial material scrap. Here, we present a novel technique that an organic molecular encapsulation with elastic polymer silane coupling agent (KH570) crosslinking with trifluoromethyl ethyl methacrylate (TFEMA) on the surface of micrometer-scale photovoltaic Si scrap particles via hydrolysis followed by polymerization. The fluorination termination functional groups would induce a more stable LiF-rich solid electrolyte interface (SEI) during the cycling, which lead to the reduction in Li + and charge transfer resistance. More importantly, the crosslinking network of the elastic polymer, enables micrometer-sized Si scrap maintain the capacity retention of at 5 A/g for 500 cycles (985mAh/g, 5 times than pure Si scrap) and achieves a 90 % retention rate after 100 cycles (131mAh/g) in a full cell system. Furthermore, the Si scraps with such a functional organic coating could be matching with a polymer-based electrolyte as an all-solid battery, which present a specific capacity of 1000mAh/g. This technique of organic molecular encapsulation is straightforward, replicable and holds considerable practical value for the recycling of resources.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Shuai Heng,Qiang Shi,Xueying Zheng,Yan Wang,Qunting Qu,Gao Liu,Vincent S. Battaglia,Honghe Zheng
Carbon coating technologies for olivine-structured LiFePO 4 have been successfully commercialized in lithium ion industries. However, up to today, there are still many challenges overcoming the low intrinsic ionic conductivity and surface instability limitations. Herein, we propose a lithium ion conductive organic-skinned secondary coating technique by applying sodium maleate onto the surface of a commercial carbon-coated LiFePO 4 cathode. Very distinctive features of the organic skin secondary coating are highly uniform and continuous. More importantly, the abundant carbonyl groups on the LFP surface facilitates facial Li ion transport. The nanostructure tuned organic layer is able to effectively suppress the undesired side reactions at the electrode/electrolyte interface. With 6.0 wt% of the sodium maleate coating, rate capability and long-term cycling behavior of the LiFePO 4 cathode at different temperatures are significantly improved. Notably, the well-known impedance rise of LFP cathode with increasing electrochemical cycles is effectively suppressed. An insight into the mechanisms of the secondary sodium maleate coating on the carbon-coated LiFePO 4 cathode is discussed.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 8
·082501
·
IF 4.386
Yinghai Zhao,Xiandong Yin,Pengjie Shen,Ning Li,Yanling Xu
In this work, the tinplate with 0.5 g·m−2 tin coating mass was prepared in order to improve the economic benefit for food packaging field. We studied this low Sn-coated steel surface state and developed a process combined Mo-Mn-Al-P coating based on its special structure. By Taguchi techniques optimization, this chromium-free multi-elements coating has excellent corrosion resistance and adhesion with organic coatings, would be a hopefully replacing traditional chromate passivation treatment on tinplate with low tin coating mass.
研究领域:
材料科学
·
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）