Abstract:Solar energy photothermal conversion materials have great potential and broad application prospects in desalination. It is of great significance to develop photothermal conversion materials with high evaporation efficiency, low cost and biodegradability for the development of desalination technology. In this study,carbon black /CNF composite photothermal conversion materials were prepared by using nanofiltration cellulose (CNF) as raw materials with adding carbon black and adhesives. The photothermal conversion efficiency, sea water evaporation efficiency, thermal insulation performance were also studied. The results showed that the material had good photo absorption performance, sea water evaporation efficiency and thermal insulation performance. The best dosage of carbon black was 1.0%, the total solar energy absorption efficiency was 92.05%, the evaporation efficiency of sea water was 1.17 kg/(m2·h) and thermal conductivity was 0.05 W/(m•K). |