Portal de Periódicos da CAPES

Citral Encapsulated into a Zeolite Imidazolate Framework-67 (ZIF-67) Cage via Biomimetic Mineralization as an Efficient Preservative for Long-Term Antimildew Efficacy of Bamboo

2024; American Chemical Society; Volume: 12; Issue: 43 Linguagem: Inglês

10.1021/acssuschemeng.4c05300

2168-0485

Na Wang, Xiang Zhou, Youming Dong, Ying Zhang, Rong Liu, Haijiao Kang, Kaili Wang, Jianzhang Li,

Plant responses to water stress

Natural mildew preventives, like citral, have great potential to protect bamboo from mildew, while their long-lasting antimildew performance is yet to be challenged owing to their oxidability and volatility. Inspired by biomimetic mineralization, in this work, citral@ZIF-67 particles were synthesized by encapsulating citral into a zeolite imidazolate framework-67 (ZIF-67) cage and introduced into a bamboo structure. Benefiting from the unique cage structure and large surface area of ZIF-67, it can encapsulate sufficient citral molecules. The encapsulation reduced the particle size of ZIF-67 due to the nucleation of citral. Furthermore, the surface area, pore size, and volume of citral@ZIF-67 particles gradually decreased with the increase in loading amounts of citral. ZIF-67 exhibited a certain antibacterial ability against E. coli and S. aureus. The encapsulation of citral can further enhance the antibacterial activity of ZIF-67. In addition, the citral@ZIF-67 showed slow-release performance that followed the Fickian diffusion mechanism. After the citral@ZIF-67 treatment, bamboo showed no mold spots on the surface with an infection grade of 0, which was retained, even though bamboo was conditioned at 50 °C and 85% relative humidity for 10 days. This proposed method can effectively improve the stability of natural mildew preventives and endow bamboo with long-term antimildew properties with low cost and minimized environmental impacts.