IOCAS-IR  > 海洋环境腐蚀与生物污损重点实验室
Self-healing protective coating with dual reversible bonds triggered by photothermal responsive Co9S8@Bi2S3 hollow core-shell nanofillers
Kang, Qianqian1; Wang, Wei1; Wang, Tong1; Mao, Zhipeng1; Li, Wen1; Wang, Peng2; Chen, Shougang1
2023-12-01
Source PublicationPROGRESS IN ORGANIC COATINGS
ISSN0300-9440
Volume185Pages:15
Corresponding AuthorWang, Wei(wangwei8038@ouc.edu.cn) ; Chen, Shougang(sgchen@ouc.edu.cn)
AbstractHerein, we develop a novel composite coating with excellent self-healing and anticorrosion properties activated by photothermal responsive hollow core-shell nanofillers. A photothermal heterojunction Co9S8@Bi2S3 was prepared and integrated into polyurethane containing disulfide bonds. It is found that the heterojunction has enhanced the light absorption capacity and has increased the number and lifetime of photogenerated electron hole pairs, making more photogenerated charges pass through the heterojunction interface by reducing interface transfer resistance and releasing heat as well. Under 808 nm near-infrared light irradiation, the photothermal effect of Co9S8@Bi2S3 can trigger the reconstruction of dynamic disulfide bonds and reversible hydrogen bonds simultaneously to heal coating scratches. The surface characterization and electrochemical test results manifest that the coating containing 2 wt% 10 %-Co9S8@Bi2S3 nanofillers displayed excellent self-healing and anticorrosive capabilities. The self-healing efficiency of nearly 90 % was achieved after five-time cutting-healing cycles on the coating. The protection performance of the initial immersion stage could be restored by nearly 100 % after five-time self-healing, and the low-frequency impedance modulus was above 108 & omega; cm2 even after 60 days of immersion. This work would provide a new tactic for developing multi-cycle self-healing coatings triggered by photothermal effects.
KeywordHollow structure Photothermal response Disulfide bond Self-healing coating Corrosion protection
DOI10.1016/j.porgcoat.2023.107891
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[42076039] ; Natural Science Foundation for Shandong Province[ZR2020ME016] ; Fundamental Research Funds for the Central Universities[202165004]
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Applied ; Materials Science, Coatings & Films
WOS IDWOS:001067285900001
PublisherELSEVIER SCIENCE SA
WOS KeywordANTICORROSION
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/181827
Collection海洋环境腐蚀与生物污损重点实验室
Corresponding AuthorWang, Wei; Chen, Shougang
Affiliation1.Ocean Univ China, Sch Mat Sci & Engn, Qingdao 266100, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Kang, Qianqian,Wang, Wei,Wang, Tong,et al. Self-healing protective coating with dual reversible bonds triggered by photothermal responsive Co9S8@Bi2S3 hollow core-shell nanofillers[J]. PROGRESS IN ORGANIC COATINGS,2023,185:15.
APA Kang, Qianqian.,Wang, Wei.,Wang, Tong.,Mao, Zhipeng.,Li, Wen.,...&Chen, Shougang.(2023).Self-healing protective coating with dual reversible bonds triggered by photothermal responsive Co9S8@Bi2S3 hollow core-shell nanofillers.PROGRESS IN ORGANIC COATINGS,185,15.
MLA Kang, Qianqian,et al."Self-healing protective coating with dual reversible bonds triggered by photothermal responsive Co9S8@Bi2S3 hollow core-shell nanofillers".PROGRESS IN ORGANIC COATINGS 185(2023):15.
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