Superhydrophobic PVDF membrane formed by crystallization process for direct contact membrane distillation

Hou, Caiyun; Du, Lei; Li, Yao; Guo, Meiwei; Zhou, Jiti; Qiao, Sen

doi:10.1016/j.isci.2023.106464

Cited by 6 publications

(3 citation statements)

References 54 publications

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“…Preparation of g-C 3 N 4 Nanosheets Loaded with Pt Atoms: The g-C 3 N 4 nanosheets were synthesized by the conventional thermal etching method. [41] The details for the preparation of the g-C 3 N 4 nanosheets can be found in Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

“…MBA and APS were used as the cross-linker and initiator. [41] The details for the preparation of the hybrid hydrogels can be found in Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

“…[40] Thus, the electrospun PVDF membrane prominently slows down the evaporation of water in the hydrogels, and significantly improves its water retention capacity, which prominently extends the life of hydrogen production in the hybrid hydrogels. [41][42][43][44][45] In addition, a Janus structure is established by the upper hydrophobic PVDF membrane and the lower hydrophilic hybrid hydrogel. According to previous investigations, [46][47][48][49][50][51] the water transport rate from the hydrophobic to the hydrophilic part can be profoundly accelerated.…”

mentioning

confidence: 99%

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Long‐Lasting Hydrogen Evolution and Efficient Dew Harvest Realized via Electrospinning Polyvinylidene Fluoride Membrane on Hybrid Hydrogels

Yu,

Chen,

et al. 2024

Small Science

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Long‐lasting hydrogen evolution and efficient dew harvest is realized via electrospinning a polyvinylidene fluoride (PVDF) membrane on hybrid hydrogels embedded with photocatalytic g‐C3N4/Pt nanosheets. Due to the hindrance of water evaporation by the hydrophobic PVDF membrane, the drying process of the hybrid hydrogels significantly slows down. Hence, the g‐C3N4/Pt nanosheets can continue working on photocatalytic splitting of the water molecules in the hydrogels. When the thickness of the PVDF membrane is 48 μm, the hydrogen evolution rate can reach 2,543 μmol h−1 g−1, which is 38% more than that of the hybrid hydrogel without covering. Therefore, the hybrid hydrogels covered with PVDF membrane are able to work with high efficiency for 12 h, sufficient for hydrogen evolution during the daytime. In addition, the hydrophobic PVDF membrane and hydrophilic hydrogels construct a Janus structure and induce a fast transport of water molecules from the hydrophobic to hydrophilic side. It is beneficial for the rapid collection of dew in the morning. Based on the long‐lasting hydrogen evolution and efficient dew harvest, the present hybrid hydrogels covered with PVDF membrane are very suitable for the environment rich in solar resource and lack of water supply, such as desert or prairie.

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Section: Methodsmentioning

confidence: 99%

“…MBA and APS were used as the cross-linker and initiator. [41] The details for the preparation of the hybrid hydrogels can be found in Supporting Information.…”

Section: Methodsmentioning

confidence: 99%