文献类型：期刊文献

英文题名：Self-Luminous Wood Coatings with Carbon Dots/TiO2 Grafted Afterglow SrAl2O4: Eu, Dy Core-Shell Phosphors for Long-Lasting Formaldehyde Removal

作者：Zhang, Longfei[1,2,3] Wang, Ying[1] Peng, Limin[1] Chen, Zhilin[1] Lyu, Shaoyi[1,2,3] Wang, Siqun[4]

第一作者：Zhang, Longfei;张龙飞

通信作者：Lyu, SY[1];Lyu, SY[2];Lyu, SY[3];Wang, SQ[4]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China;[3]Natl Forestry & Grassland Adm, Key Lab Plant Fiber Funct Mat, Fuzhou 350002, Peoples R China;[4]Univ Tennessee, Ctr Renewable Carbon, Knoxville, TN 37996 USA

年份：2023

卷号：15

期号：9

外文期刊名：POLYMERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000987793500001)】；

基金：This research was funded by the National Natural Science Foundation of China (32001261), the basic research funds of central level public welfare research institutes (CAFYBB2022MB001), and the Open Fund Program of the Key Laboratory (2019KFJJ13).

语种：英文

外文关键词：carbon dots; core-shell microspheres; SrAl2O4; Eu2+; Dy3+ phosphor; titanium dioxide; surface modification; photocatalytic degradation

摘要：Long-term relief of indoor volatile pollution has become a competitive issue worldwide in both visible and dark environments. A novel self-luminous wood coating with carbon dots (CDs)/titanium dioxide (TiO2) nanomaterial coated SrAl2O4: Eu2+, Dy3+ (CDs/TiO2@SAO) composite was prepared for the long-term degradation of formaldehyde through a simple sol-gel method. The microstructure, chemical composition, ultraviolet-visible (UV-vis) spectra, and long-lasting fluorescence of the CDs/TiO2@SAO photocatalyst were analyzed to illustrate the mechanism for degrading formaldehyde. The obtained CDs with a particle size of similar to 2-7 nm have a good graphite structure and presented good absorption in visible light. In addition, owing to the synergistic effect of the CDs/TiO2 nanomaterial coating layer and the long-afterglow luminescence of the SAO phosphor, the CDs/TiO2@SAO composite can absorb a part of the visible light for photocatalytic degradation and store luminous energy efficiently at daytime so as to give out visible luminescence continuously for a few hours in the darkness. Furthermore, the functional wood coatings with CDs/TiO2@SAO composite presented continuous and efficient photocatalytic activity in the presence and absence of light exposure. The current research could provide a new strategy for designing an efficient photocatalyst for degrading formaldehyde pollution in the daytime with a visible light supply and in an indoor dark environment without an external light source.