标题: Reed Leaves Inspired Silica Nanofibrous Aerogels with Parallel-Arranged Vessels for Salt-Resistant Solar Desalination

作者: Dong, XY (Dong, Xiangyang); Si, Y (Si, Yang); Chen, CJ (Chen, Chaoji); Ding, B (Ding, Bin); Deng, HB (Deng, Hongbing)

来源出版物: ACS NANO卷: 15期: 7页: 12256-12266 DOI: 10.1021/acsnano.1c04035出版年: JUL 27 2021

摘要: Sufficient and clean freshwater is still out of reach for billions of people around the world. Solar desalination from brine is regarded as one of the most promising proposals to solve this severe crisis. However, most of the reported evaporators to date still suffer from the decreasing evaporation rate caused by salt crystallization accumulated on their surface. Here, inspired by the vascular tissue structure, transpiration, and antifouling function of reed leaves, we design biomimetic hierarchical nanofibrous aerogels with parallel-arranged vessels and hydrophobic surfaces for highly efficient and salt-resistant solar desalination. Foldable vessel walls and flexible silica nanofibers give the reed leaf-inspired nanofiber aerogels (RNFAs) excellent mechanical properties and enable them to withstand repeated compression. Besides, the R-NFAs can efficiently absorb sunlight (light absorption efficiency: 94.8%) and evaporate the brine to vapor, similar to reed leaves (evaporation rate: 1.25 kg m(-2) h(-1) under 1 sun). More importantly, enabled by the hydrophobic surfaces and parallel-arranged vessels, the R-NFAs can work stably in high-concentration brine (saturated, 26.3 wt %) under high-intensity light (up to 6 sun), demonstrating potent salt resistance. It is expected that RNFAs with combined antisalt pore and surface structures will provide a designed concept for salt-resistant solar desalination.

入藏号: WOS:000679406500113

PubMed ID: 34151558

语言: English

文献类型: Article

作者关键词: electrospun nanofiber; nanofibrous aerogel; solar desalination; salt resistance; biomimetic aerogel

地址: [Dong, Xiangyang; Chen, Chaoji; Deng, Hongbing] Wuhan Univ, Hubei Engn Ctr Nat Polymers Based Med Mat, Sch Resource & Environm Sci,Hubei Int Sci & Techn, Hubei Key Lab Biomass Resource Chem & Environm Bi, Wuhan 430079, Peoples R China.

[Si, Yang; Ding, Bin] Donghua Univ, Coll Text, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.

[Si, Yang; Ding, Bin; Deng, Hongbing] Donghua Univ, Innovat Ctr Text Sci & Technol, Shanghai 200051, Peoples R China.

通讯作者地址: Deng, HB (通讯作者)，Wuhan Univ, Hubei Engn Ctr Nat Polymers Based Med Mat, Sch Resource & Environm Sci,Hubei Int Sci & Techn, Hubei Key Lab Biomass Resource Chem & Environm Bi, Wuhan 430079, Peoples R China.

Ding, B (通讯作者)，Donghua Univ, Coll Text, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.

Ding, B; Deng, HB (通讯作者)，Donghua Univ, Innovat Ctr Text Sci & Technol, Shanghai 200051, Peoples R China.

电子邮件地址: binding@dhu.edu.cn;hbdeng@whu.edu.cn

影响因子：15.881