铅铆钉钙钛矿原位生长及荧光纤维湿法纺丝研究OACSTPCD
Study on perovskite lead rivet in-situ growth and fluorescent fiber wet spinning
为了提高卤化铅钙钛矿的稳定性,抑制铅离子释放以减小潜在的生物毒性威胁,提出"铅铆钉"生长钙钛矿的创新方法,在晶体生长初期即引入铅离子捕获过程,从源头上解决铅离子泄漏问题,并且通过原子层沉积策略进一步提升其稳定性,使其能够安全适用于荧光湿法纺丝工艺.结果表明:采用铅铆钉策略的钙钛矿纳米粒子即使在完全解离的条件下,依然可以大幅度减少铅离子排放,荧光量子产率达到56.68%,其所制备的荧光纤维连续浸泡5天后的铅离子质量浓度仅为1.58 μg/L,达到饮用水使用标准.认为:该方案解决了铅卤钙钛矿在水中的不稳定性问题,并利用湿法纺丝法制备了钙钛矿荧光纤维,表现出优异的荧光稳定性、化学稳定性及生物安全性能,其断裂伸长率达到364.72%,具有优异的纤维韧性和编织性能.
In order to improve the stability of lead halide perovskite,inhibit lead ion release and reduce the potential biological toxicity threat,lead rivet growth perovskite method was put forward.The lead ion capture process was introduced at the initial stage of crystal growth to solve the problem of lead ion leakage and further improve its stability through the atomic layer deposition strategy,so that it could be safely suitable for the fluorescent wet spinning process.The results showed that the perovskite nanoparticles with the lead rivet strategy could greatly reduce the lead ion emission even under complete dissociation conditions.The fluorescent quantum yield was reached 56.68%,and the lead ion mass concentration of prepared fluorescent fiber for 5 days continuous soaking was only 1.58 μg/L,which could reaching the standard for drinking water.It is considered that the scheme could solve the instability problem of lead halogen perovskite in water,and wet spinning method could be used to prepare perovskite fluorescent fibers with excellent fluorescence stability,chemical stability and biological safety performance.Its breaking elongation was reached 364.72%.It has excellent fiber toughness and weaving performance.
王涵龙;朱士凤;高飞红;曲丽君;游超瑜
青岛大学,山东青岛,266071青岛大学,山东青岛,266071||青岛肿瘤研究院,山东青岛,266000
轻工业
钙钛矿铅铆钉原子层沉积荧光纤维湿法纺丝
perovskitelead rivetatomic layer depositionflurescent fiberwet spinning
《棉纺织技术》 2024 (006)
41-48 / 8
国家自然科学基金面上项目(21972117);山东省自然科学基金(ZR2021QE201,ZR2023ME157);青岛博士后创新项目(QDBSH20220202210);青岛大学生物纤维和生态纺织品国家重点实验室研究基金(ZKT45)
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