文献类型：期刊文献

英文题名：Carbon dots: building a robust optical shield for wood preservation

作者：Han, Youqi[1] Wang, Yuning[1] Zhao, Bin[1] Bai, Yibing[1] Han, Shiyan[1] Zhang, Yahui[2] Li, Shujun[1] Chen, Zhijun[1] Si, Chuanling[3] Yu, Haipeng[1] Zhang, Chunlei[1] Yu, Wenji[2]

第一作者：Han, Youqi

通信作者：Han, SY[1];Yu, WJ[2];Si, CL[3]

机构：[1]Northeast Forestry Univ, Engn Res Ctr Adv Wooden Mat, Minist Educ, Harbin 150040, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin 300457, Peoples R China

年份：2023

卷号：6

期号：1

外文期刊名：ADVANCED COMPOSITES AND HYBRID MATERIALS

收录：;EI(收录号：20230313392374);Scopus(收录号：2-s2.0-85146231094);WOS:【SCI-EXPANDED(收录号:WOS:000912359600001)】；

基金：This study was funded by the National Key Research and Development Program (2021YFD2200601).

语种：英文

外文关键词：Cellulose; Biomass-based carbon dots (Bio-CDs); Concentration-dependent emission; Optical shielding film (OSF); Wood protection

摘要：Wood is a sustainable building material that can help to achieve carbon neutralization but, because wood is easily damaged by ultraviolet (UV) light, it is important to protect wood from this harmful radiation. Here, we synthesized sustainable biomass-based carbon dots (Bio-CDs) using only microcrystalline cellulose, which was concentration-dependent and capable of absorbing short wavelength and converting it to long wavelength light emission. Furthermore, the Bio-CDs were mixed with poly (vinyl alcohol) (PVA) to produce robust optical shielding films (OSFs). The results showed that OSFs had good optical properties, which could effectively block UV and high-energy blue photons radiation by absorbing short wavelength light and converting it into longer wavelength (> 450 nm) light. The extent of UV and high-energy blue photons blocking can be easily adjusted by varying the proportion of Bio-CDs in the film. The OSFs have good optical properties and have been successfully used to protect wood from UV damage. This study, which uses environmentally friendly and simple methodology, provides an example of sustainable research.