ABSTRACT

Three-dimensional carbon nanosheets (3D-CNS) with excellent photothermal conversion (PTC) efficiency and solar evaporation performance were synthesized via a facile, versatile, and gram-scale co-precipitation carbonization strategy. Here, water-soluble biomass (protein) and inorganic salt (K₂SO₄) were co-precipitated in organic phase. The co-precipitation was then carbonized. The 3D-CNS constituted of thin, transparent, wrinkled, and interconnected nanosheets was yielded by the removal of soft template. The resulted material displayed an unprecedented PTC efficiency (h = 79.76%) at a power density of 1.5 W cm⁻². The carbon-based photothermal membrane based on 3D-CNS was easily obtained by suction filtration, and exhibited excellent evaporation performance (89.55 ± 0.56%).

摘要

通过一种简便，通用和克级的共沉淀碳化策略，合成了具有出色的光热转换（PTC）效率和太阳蒸发性能的三维碳纳米片（3D-CNS）。在这里，水溶性生物质（蛋白质）和无机盐（K ₂ SO ₄）在有机相中共沉淀。然后将共沉淀碳化。3D-CNS由薄的，透明的，起皱的和相互连接的纳米片构成，是通过去除软模板而制成的。所得材料 在1.5 W cm ^-2的功率密度下显示出前所未有的PTC效率（h = 79.76％）。易于通过吸滤获得基于3D-CNS的碳基光热膜，并表现出出色的蒸发性能（89.55±0.56％）。