皮革科学与工程 ›› 2024, Vol. 34 ›› Issue (1): 18-23.doi: 10.19677/j.issn.1004-7964.2024.01.003

• 试验研究 • 上一篇    下一篇

MXene@聚多巴胺的制备、性能和应用

周建华1,2,*, 晏亚飞1,2, 周梦园1,2   

  1. 1.陕西科技大学 轻工科学与工程学院,陕西 西安 710021;
    2.轻化工程国家级实验教学示范中心(陕西科技大学),陕西 西安 710021
  • 收稿日期:2023-05-25 修回日期:2023-07-21 接受日期:2023-08-13 出版日期:2024-02-01 上线日期:2024-01-08
  • 通讯作者: *
  • 作者简介:周建华(1973-),女,博士,教授,主要从事功能皮革化学品的合成及应用研究。E-mail:zhoujianh@21cn.com。
  • 基金资助:
    国家自然科学基金(21978162); 咸阳市重点研发计划(2021ZDYF-GY-0037); 西安市科技计划项目(22GXFW0003)

Preparation, Properties and Application of MXene@Polydopamine

ZHOU Jianhua1,2,*, YAN Yafei1,2, ZHOU Mengyuan1,2   

  1. 1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China;
    2. National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science & Technology), Xi'an 710021, China
  • Received:2023-05-25 Revised:2023-07-21 Accepted:2023-08-13 Online:2024-02-01 Published:2024-01-08

摘要: 将光热转换材料聚多巴胺包覆的MXene(MXene@PDA)引入胶原气凝胶,来提高其光热转换能力,扩大其在低温防护领域的应用范围。采用化学刻蚀和原位锂离子插层法制备了MXene,然后利用多巴胺(DA)在MXene表面发生氧化自聚合反应,得到了MXene@PDA,探讨了DA用量对MXene@PDA性能的影响。利用透射电子显微镜、扫描电子显微镜、X-射线衍射和紫外-可见-近红外光谱对MXene@PDA的结构和性能进行了测试和表征。结果表明PDA被成功包覆在MXene薄片上,提高了MXene的环境稳定性。当MXene与DA的质量比为100∶6时,制得的MXene@PDA光吸收性能最佳。在100 mW/cm2氙灯照射下,MXene@PDA改性胶原气凝胶的温度高达54.8 ℃,相比于胶原气凝胶提升了17.9 ℃,并且在多次光热循环实验中最高温度都在54.8 ℃左右,表现出优异的光热转换性能和循环稳定性。

关键词: MXene, 聚多巴胺, 光热转换, 胶原, 气凝胶

Abstract: Polydopamine-coated MXene (MXene@PDA), a photothermal conversion material, was introduced into collagen aerogel to improve its photothermal conversion ability and expand its application in the field of low temperature protection. MXene was prepared by chemical etching and in situ lithium-ion intercalation, and then the oxidative self-polymerization reaction of dopamine (DA) on the surface of MXene was utilized to obtain MXene@PDA. Moreover, the effect of DA dosage on the properties of MXene@PDA was explored. The structure and properties of MXene@PDA were tested and characterized using transmission electron microscopy, scanning electron microscopy, X-ray diffraction and ultraviolet-visible-near infrared spectroscopy. Results showed that PDA was successfully coated on the surfaces of MXene flakes, which improved the environmental stability of MXene. The best light absorption performance of the fabricated MXene@PDA was achieved when the mass ratio of MXene to DA was 100∶6. Under the irradiation of 100 mW/cm2 xenon lamp, the temperature of MXene@PDA modified collagen aerogel was as high as 54.8 ℃, which was enhanced by 17.9 ℃ compared with pure collagen aerogel, and the maximum temperature was around 54.8 ℃ in several photothermal cycling experiments, showing the excellent photothermal conversion performance and cycling stability.

Key words: MXene, polydopamine, photothermal conversion, collagen, aerogel

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