文献类型：期刊文献

英文题名：Arch bridge-inspired natural convection enhancement for high-performance interfacial solar-driven evaporation

作者：Wang, Caiwei[1];Yu, Liqiang[1];Wei, Changhong[1];Wang, Ning[2];Chen, Bo[1];Ge, Yuanyuan[1];Li, Zhili[1]

机构：[1]Guangxi Univ GXU, Univ Engn Res Ctr Green Chem New Mat, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc Int, 100 Daxuedong Rd, Nanning 530004, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2026

卷号：388

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20260219872599);WOS:【SCI-EXPANDED(收录号:WOS:001662762200001)】；

基金：Acknowledgments This work was supported by the National Natural Science Foundation of China (22266006) , Natural Science Foundation of Guangxi Province (2025GXNSFBA069417) . Caiwei Wang acknowledges the financial support from the Guangxi Young Talent Funding Research Project, and the Program for Introducing High-Level Talents from Guangxi University.

语种：英文

外文关键词：Natural convection; Evaporator structure; Photothermal evaporation; Seawater desalination; Wastewater treatment

摘要：Green and sustainable interfacial evaporation driven by solar energy plays a crucial role in transforming wastewater into blue water under current low-carbon concept. However, the development of practical solar evaporation are hindered by low evaporation rate and easy salt accumulation. Herein, inspired by Chinese stone arch bridge enabling natural convection enhancement, a simple and efficient pseudo 2D arch evaporator was fabricated using gradient hydrophobic 2D photothermal layer, commercial cellulose paper as 2D waterway and copper mesh as supporting substrate. Hydrophilic geopolymer (GM), slightly hydrophilic graphitic carbon nitride (CN) layer and hydrophobic holed CNTs film (HCF) were assembled in sequence to prepare gradient hydrophobic 2D photothermal layer (HCF/CN/GM). Benefiting from the vertical two holes in HCF enhancing natural convection at the top regions, the HCF/CN/GM arch evaporator exhibits an excellent evaporation rate of 2.05 kg center dot m- 2 center dot h- 1 under 1 sun. The hydrophobic gradient of photothermal layer with hydrophilic bottom and hydrophobic top and the temperature gradient of arch bridge with low temperature at the bottom and high temperature at the top achieve multiple reflux effects, which effectively suppresses salt accumulation under high evaporation rate. This work presents a novel convection enhancement strategy to fabricate efficient interfacial evaporators for solar-driven evaporation.