Bamboo is one of the fastest growing plants in the world,and as bamboo production increases,so does the amount of waste such as bamboo powder produced during processing.Rational utilization of these bamboo wastes can not only save resources,promote green and sustainable development,but also improve the utilization rate of bamboo resources.In this paper,bamboo nanoculose(CNF)is prepared by TEMPO oxidation method using bamboo powder as the basic raw material.A composite aerogel is prepared by directional freezing technique and carboxylated carbon nanotubes(CNT-COOH),and its photothermal properties are explored.Among them,CCA4(mass ratio of CNT-COOH to CNF is 1 to 4,mass fraction of sodium glucuronate 44.4%)has excellent performance,with the highest light absorption rate of 97.4%,the highest evaporation rate of 1.28 kg/(m2·h)under actual conditions,and the photothermal conversion efficiency of 78.41%.
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