Salt-resistant and antibacterial polyvinyl alcohol/chitosan/silver-loaded graphene oxide electrospun nanofiber membrane for high-efficiency solar-driven desalination

Kang, Qianru; Zhai, Yiwei; Zhao, Fangbo; Yang, Liu; Yang, Ye; Park, Hee-Deung; Li, Zhiguo; Chen, Hongxu; Sun, Gaohui

doi:10.1016/j.cherd.2024.03.042

Cited by 4 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, the solar to heat conversion process is maximized through synergistic photothermal effects 6 , 11 . Various three-dimensional monolithic rGO/metallic, semiconductors or plasmonic material nanocomposites, such as rGO/Ag, MnO 2 /C, rGO/CuS, MoS 2 /C, MnO 2 /C, and CuO/C composites have been proven to exhibit exceptional steam generation and desalination capabilities 17 , 19 , 20 , 29 – 32 . Kospa et al 30 achieved an impressive evaporation rate and solar-to-steam efficiency using a CuO-rGO/PANI composite evaporator, showcasing high salt-resistance and oil-repulsion properties.…”

Section: Introductionmentioning

confidence: 99%

“…Under one-sun irradiation, this material achieved a freshwater generation rate of 1.56 kg m −2 h −1 , with a remarkable photothermal conversion efficiency of 97.9%. Kang et al 32 developed an efficient silver-loaded graphene (GO-Ag) and polyvinyl alcohol/chitosan (PVA/CS) composite that exhibited up to 97% solar absorption performance, achieving an evaporation rate of 1.64 kg m −2 h −1 under one-sun conditions, accompanied by an outstanding photothermal conversion efficiency of 99.99%.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the main challenge facing the interfacial 3D evaporators is the issue of scaling and salt crystal formation on the evaporator surface, which negatively impacts solar absorption, blocks water transfer channels, adversely affects photothermal conversion efficiency, leading to interruptions in the interfacial desalination process and compromising long-term stable performance 17 , 19 , 20 . Therefore, the current research hotspot lies in the design and development of efficient self-cleaning and salt-resistant 3D hybrid photothermal materials that can deliver stable performance, high photothermal conversion rates, and effective water vapor generation 17 , 32 – 34 . Consequently, there is a need to develop new solar steam generation devices that possess adequate salt-resistance capabilities, efficient solar-thermal energy conversion, and high-water evaporation efficiency.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design and fabrication of porous three‐dimensional Ag-doped reduced graphene oxide (3D Ag@rGO) composite for interfacial solar desalination

Bezza,

Iwarere,

Brink

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Solar-driven interfacial desalination technology has shown great promise in tackling the urgent global water scarcity crisis due to its ability to localize heat and its high solar-to-thermal energy conversion efficiency. For the realization of sustainable saline water desalination, the exploration of novel photothermal materials with higher water vapor generation and photothermal conversion efficiency is indispensable. In the current study, a novel 3D interconnected monolithic Ag-doped rGO network was synthesized for efficient photothermal application. The Ultraviolet–Visible-Near Infrared (UV–Vis-NIR) and FTIR analyses demonstrated that the controlled hydrothermal reduction of GO enabled the restoration of the conjugated sp2 bonded carbon network and the subsequent electrical and thermal conductivity through a significant reduction of oxygen-containing functional groups while maintaining the hydrophilicity of the composite photothermal material. In the solar simulated interfacial desalination study conducted using 3.5 wt.% saline water, the average surface temperatures of the 3D material increased from 27.1 to 54.7 °C in an hour, achieving an average net dark-excluded evaporation rate of 1.40 kg m−2 h−1 and a photothermal conversion efficiency of ~ 97.54% under 1 sun solar irradiance. In the outdoor real-world application test carried out, the surface temperature of the 3D solar evaporator reached up to 60 °C and achieved a net water evaporation rate of 1.50 kg m−2 h−1 under actual solar irradiation. The 3D interwoven porous hierarchical evaporator displayed no salt precipitation over the 54-h period monitored, demonstrating the promising salt rejection and real-world application potential for efficient desalination of saline water.

show abstract