Carbon dots:building a robust optical shield for wood preservation
Carbon dots:building a robust optical shield for wood preservation
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.Further,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 the wood from UV damage.This study,which uses an environmentally friendly and simple methodology,provides an example of sustainable research.
Youqi Han;Yuning Wang;Bin Zhao;Yibing Bai;Shiyan Han;Yahui Zhang;Shujun Li;Zhijun Chen;Chuanling Si;Haipeng Yu;Chunlei Zhang;Wenji Yu;
Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091;Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Tianjin Key Laboratory of Pulp and Paper,Tianjin University of Science and Technology,Tianjin 300457;Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Engineering Research Center of Advanced Wooden Materials(Northeast Forestry University),Ministry of Education,Harbin 150040;Research Institute of Wood Industry,Chinese Academy of Forestry,Beijing 100091;
Cellulose Biomass-based carbon dots(Bio-CDs) Concentration-dependent emission Optical shielding film(OSF) Wood protection
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