A flame-retardant wood-based composite with magnesium–aluminium layered double hydroxides for efficient daytime radiative cooling
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Guowei Li, Jiawei Huang, Jian Zhou, Yucheng Zhang, Chuchu Zhang, Zhenggang Rao, Linfeng Fei
Passive daytime radiative cooling (PDRC) is a zero-energy-consumption cooling technology and is very promising for future energy-efficient buildings. Wood-based composites, as conventional green and sustainable building materials, have shown their prominent PDRC capabilities in recent studies. In this context, it is of practical significance to endow these wood-based materials with the additional characteristic of flame resistance while maintaining or even enhancing their PDRC performance, which, however, remains a grand challenge. Herein, we demonstrate the successful incorporation of magnesium–aluminium layered double hydroxide (MgAl-LDH) nanoflakes into delignified wood sawdust (i.e., lignocellulose fibers) by a freeze-drying assisted lamination process for simultaneous PDRC and flame-retardant applications. Due to the interfacial hydrogen bonding between lignocellulose fibers and MgAl-LDH nanoflakes, the composite material delivers an efficient PDRC performance (a cooling effect up to 14 °C under sunlight) as well as excellent flame-retardant properties (a 52.9% reduction in the heat release rate during combustion as compared to natural wood). Such an effective combination of superior PDRC and flame-retardant performance in a wood-based composite can lead to expanding applications of wood derivatives.
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Journal of Materials Chemistry A

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment










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