Effect of polyvinyl alcohol on aggregation and flow characteristics of tetra-n-butylammonium bromide and tetra-n-butylphosphonium bromide semi-clathrate hydrate slurries formed under CO2 bubbling

Komatsu, Hiroyuki; Horiguchi, Tatsuya; Sakamoto, Nobuyuki; Tajima, Hideo

doi:10.1016/j.ces.2023.118454

Chemical Engineering Science

2023

DOI: 10.1016/j.ces.2023.118454

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Effect of polyvinyl alcohol on aggregation and flow characteristics of tetra-n-butylammonium bromide and tetra-n-butylphosphonium bromide semi-clathrate hydrate slurries formed under CO2 bubbling

Hiroyuki Komatsu

Tatsuya Horiguchi

Nobuyuki Sakamoto

et al.

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Cited by 7 publications

References 40 publications

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Dynamic Water Microskin Induced by Photothermally Responsive Interpenetrating Hydrogel Networks for High‐Performance Light‐Tracking Water Evaporation

Tian,

Han,

Wang

et al. 2024

Advanced Energy Materials

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Solar‐driven interfacial water evaporation is attracting increasing attention as a promising environmentally‐friendly solution to freshwater scarcity. It has been proven that a thin water layer on photothermal materials can prevent solar energy from invalidly heating the excess water to enhance the evaporation rate. However, the current water layers are usually formed on inelastic materials via confined capillarity, which are static and uncontrollable. Herein, we propose a flexible hydrogel‐based photothermal conversion material with thermal responsiveness by facile frontal polymerization, which can generate a unique dynamic water microskin (DWMS) during the solar evaporation process. The copolymerized hydrogel, introduced by the second polymeric poly(vinyl alcohol) network and thermally responsive poly(N‐isopropylacrylamide) (PNIPAM), exhibits reinforced mechanical strength and photothermally triggers reversible shrinking/swelling cycles that enable a thin water layer (≈32 µm) to balance the feedwater supply and photothermic energy input dynamically. As a result, a stable superior vaporization rate of 8.7 kg m−2 h−1 is achieved based on a cylindrical hydrogel with 6 cm height under 1 sun. Moreover, the simultaneous responsive bending allows efficient omnidirectional solar evaporation by light‐tracking to ensure maximum perpendicular solar absorption, which provides an alternative strategy for durable high‐efficiency solar evaporators for effective thermal management and solar utilization.

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Dynamic Water Microskin Induced by Photothermally Responsive Interpenetrating Hydrogel Networks for High‐Performance Light‐Tracking Water Evaporation

Tian,

Han,

Wang

et al. 2024

Advanced Energy Materials

View full text Add to dashboard Cite

show abstract

State-of-the-art of cold energy storage, release and transport using CO2 double hydrate slurry

Yang,

Chen,

Zhang

2024

Applied Energy

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Study of the rheology and flow risk of hydrate slurries containing combined anti-agglomerants: Effects of wax, water cut and continuous phase composition

Liu,

Zhang,

et al. 2025

Chemical Engineering Science

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Effect of polyvinyl alcohol on aggregation and flow characteristics of tetra-n-butylammonium bromide and tetra-n-butylphosphonium bromide semi-clathrate hydrate slurries formed under CO2 bubbling

Cited by 7 publications

References 40 publications

Dynamic Water Microskin Induced by Photothermally Responsive Interpenetrating Hydrogel Networks for High‐Performance Light‐Tracking Water Evaporation

Dynamic Water Microskin Induced by Photothermally Responsive Interpenetrating Hydrogel Networks for High‐Performance Light‐Tracking Water Evaporation

State-of-the-art of cold energy storage, release and transport using CO2 double hydrate slurry

Study of the rheology and flow risk of hydrate slurries containing combined anti-agglomerants: Effects of wax, water cut and continuous phase composition

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