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Tiwa Yimyai Raweewan Thiramanas Treethip Phakkeeree Supitchaya Iamsaard Daniel Crespy 《Advanced functional materials》2021,31(37):2102568
Biofouling on surfaces immersed in aquatic environment induces catastrophic corrosion of metallic materials in petrochemical infrastructures, maritime facilities, and power plants. To combat the synergistic effect of biofouling and corrosion on the deterioration of metallic materials, smart coatings possessing a dual function of antibiofouling and anticorrosion properties are needed. Herein, redox-responsive copolymer conjugates are synthesized and employed as coatings with the dual function of biofouling and corrosion mitigation. The dual function of copolymers is attributed to fluorinated units and the corrosion inhibitor 2-mercaptobenzothiazole (MBT) conjugated via disulfide linkages. Indeed, the disulfide linkages can be cleaved in a reducing environment, yielding controlled release of the corrosion inhibitor MBT during corrosion process. The antibiofouling action against protein adsorption and algal attachment is enabled by cooperation of the repellent characteristic of fluorinated moieties and the biocidal effect of conjugated MBT. 相似文献
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Nipaka Sukpirom Sirinoot Iamsaard Sumittra Charojrochkul Jinda Yeyongchaiwat 《Journal of Materials Science》2011,46(20):6500-6507
The synthesis of LaNi1−
x
Fe
x
O3−δ (LNF) perovskites with x = 0.0–1.0, for use as cathode materials for an IT-SOFC, was investigated using four combustion methods, Water Citrate (WC),
Modified Water Citrate (MWC), Nitric Citrate (NC), and Modified Nitric Citrate (MNC). The structures and homogeneities of
the synthesized powders were examined using an XRD, and the particle sizes were examined using an SEM and a particle size
analyzer. All four combustion methods gave the single phase perovskites with the same structure. The main difference was shown
in a particle size that the smallest to the largest sizes were obtained from MNC, MWC, NC, and WC, respectively. In this LNF
series, as x is 0–0.5, the crystal structure is cubic and rhombohedral at the calcination temperature of 700 and 900 °C, respectively.
Further investigation indicated that the cubic structure changed to rhombohedral structure at 900 °C, and was stable up to
1200 °C. As x is 0.6–1.0, the crystal structure is in orthorhombic phase when calcined between 700 and 1000 °C. This orthorhombic phase
decomposed above 1100 °C. From the XRD and SEM–EDX results, LaNi0.6Fe0.4O3−δ (LNF64) has a good chemical compatibility with 8YSZ from room temperature up to 900 °C. In addition, its thermal expansion
coefficient is 13.2 × 10−6 K−1 close to that of 8 mol% Y2O3 (8YSZ). Therefore, LNF64 also has a good physical compatibility with 8YSZ. 相似文献
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