天然橡胶
材料科学
聚乙烯醇
石墨烯
化学工程
环境友好型
硫化
蒸发
纳米技术
复合材料
生态学
物理
工程类
生物
热力学
作者
Shangru Cheng,Tianyi Xu,Po‐Liang Lu,Anqi Li,Yingxin Yuan,Zhengmao Yin,Chongbing Li,Yang Lyu,Shanshan Guan
标识
DOI:10.1016/j.jwpe.2023.104234
摘要
Solar-driven evaporation is an environmentally benign and sustainable technology to address the global water crisis. The abundant and renewable solar energy as its sole input energy, thus leading to zero-carbon emission and minimum environmental impact. Thus, in this work, a hydrophilic reduced graphene oxide (rGO)/polyvinyl alcohol (PVA)-natural rubber (NR) porous rubber sponge was obtained by emulsion ice template and vulcanizing at high temperature. The cross-linked NR rubber and the robust PVA endow rGO/PVA-NR sponge with excellent flexibility integrated outstanding mechanical robustness. The water evaporation rate of the resultant rGO/PVA-NR evaporator can reach up to 2.11 kg·m−2·h−1 under 3 sun illumination. Moreover, benefitting from the multi-scale porous structure and hydrophilicity of the rGO/PVA-NR sponge, water is continuously transported from the bulk water to the evaporation surface in whole evaporation process, ensuring a continuous water supply and salt self-cleaning. Moreover, the results of practical solar-driven interfacial evaporation under outdoor conditions indicated that rGO/PVA-NR evaporator has overall multifunctional purification for inorganic ions and wastewater contaminated with organic dyes. This investigation provides a convenient and environmentally friendly strategy toward developing high-performance solar steaming technologies based on rubber sponge for effective water purification to address the global water crisis.
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