A bioinspired hydrogel with tailored nano-topography and desired mechanical performance for highly efficient solar-driven water purification

Ma, Wenjing; Cao, Wenxuan; Cui, Min; Fan, Qinwei; Xiong, Ranhua; Huang, Chaobo

doi:10.1039/d4ta02883j

J. Mater. Chem. A

2024

DOI: 10.1039/d4ta02883j

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A bioinspired hydrogel with tailored nano-topography and desired mechanical performance for highly efficient solar-driven water purification

Wenjing Ma,

Wenxuan Cao,

Min Cui

et al.

Abstract: Solar-driven interfacial evaporation has emerged as a sustainable and innovative technology for efficient, clean water production.

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Cited by 3 publications

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Bio-inspired magnetically induced self-assembling Janus solar evaporator with antifouling and antiscaling properties

Huang,

Sun

et al. 2024

Chemical Engineering Journal

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Bio-inspired magnetically induced self-assembling Janus solar evaporator with antifouling and antiscaling properties

Huang,

Sun

et al. 2024

Chemical Engineering Journal

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Novel Sponge-Based Carbonaceous Hydrogel for a Highly Efficient Interfacial Photothermal-Driven Atmospheric Water Generator

Hou,

Dong,

Fan

et al. 2024

ACS Appl. Mater. Interfaces

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A high-performance atmospheric water generator based on continuous adsorption−desorption of liquid hygroscopic agents was constructed by applying interfacial photothermal evaporation technology to the field of atmospheric water harvesting. A three-dimensional carboncontaining sponge hydrogel photothermal conversion material with a porous channel structure was designed, which was prepared from melamine foam (MF) and carbon black (CB) cross-linked by sodium alginate (SA). The results showed that the evaporation rate of CB/SA@ MF in pure water was 1.90 kg•m −2 •h −1 , and the photothermal conversion efficiency could reach 85.0%. The multistage pore structures and water transport channels in the A4 configuration device provided an excellent structural basis for material salt resistance and liquid hygroscopic agent regeneration. Using sponge-based CB/SA@MF hydrogel photothermal composites as the evaporation interface and liquid hygroscopic salts as the air−water trapping agent, an interfacial photothermaldriven atmospheric water generator successfully absorbed water at night and produced water during the day. Its water production could reach 2.84 kg•m −2 •d −1 . The cost of the atmospheric water generator was only $12, and the water quality obtained after 5 cycle tests met WHO/GB 5749-2022. This research was designed to collect fresh water from the air, bringing convenience to inland arid regions as well as remote and scattered areas with limited power resources.

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Ultrathin electrospun nanofibrous membranes based on poly(γ-benzyl-L-glutamate)

Souibgui,

Morávková,

Georgievski

et al. 2024

The Journal of Chemical Physics

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Ultrathin electrospun nanofibrous membranes (NfMs) based on poly(γ-benzyl-L-glutamate) (PBLG) were prepared. Scanning electron microscopy analysis revealed the production of a high-quality, bead-free nanofibrous membrane. The membrane thicknesses, ranging from 1.7 to 4.5 μm, were found to correlate directly with membrane porosity. Raman scattering analysis was utilized to investigate the conformation of the PBLG nanofibrous membrane and to assess the effects of addition of 1 wt. % trifluoroacetic acid (TFA) into the PBLG solutions, as well as the impact of annealing at 70 °C. In addition, x-ray photoelectron spectroscopy (XPS) characterization was performed to elucidate the chemical composition of the PBLG nanofibrous membrane. The Raman and Fourier-transform infrared spectroscopy spectra indicated the characteristic α-helical conformation in both the PBLG solution and the PBLG nanofibrous membrane. Furthermore, a comparative analysis of Raman band profiles proved the absence of TFA after annealing, supporting the hypothesis of TFA evaporation post-annealing, which was subsequently confirmed by the XPS results. In addition, the results from the small punch test revealed a significant correlation between membrane thickness and stiffness, indicating that increased thickness enhances stiffness. This comprehensive study provides valuable insights into the structural and compositional properties of PBLG NfMs, laying the groundwork for future investigations into their potential applications in the field of tissue engineering.

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A bioinspired hydrogel with tailored nano-topography and desired mechanical performance for highly efficient solar-driven water purification

Abstract: Solar-driven interfacial evaporation has emerged as a sustainable and innovative technology for efficient, clean water production.

Cited by 3 publications

References 91 publications

Bio-inspired magnetically induced self-assembling Janus solar evaporator with antifouling and antiscaling properties

Bio-inspired magnetically induced self-assembling Janus solar evaporator with antifouling and antiscaling properties

Novel Sponge-Based Carbonaceous Hydrogel for a Highly Efficient Interfacial Photothermal-Driven Atmospheric Water Generator

Ultrathin electrospun nanofibrous membranes based on poly(γ-benzyl-L-glutamate)

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