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Adjusting Channel Size within PVA-Based Hydrogels via Ice Templating for Enhanced Solar Steam Generation | |
2020-09-28 | |
发表期刊 | ACS APPLIED ENERGY MATERIALS (IF:5.4[JCR-2023],5.9[5-Year]) |
ISSN | 2574-0962 |
卷号 | 3期号:9页码:9216-9225 |
发表状态 | 已发表 |
DOI | 10.1021/acsaem.0c01584 |
摘要 | Solar steam generation has attracted interest in recent years as a clean source for power generation and water treatment. To achieve a high rate of steam generation, it is important for the solar evaporator to not only have high photothermal conversion efficiency but also have a large effective surface area for water evaporation. Herein, we report the use of PVA-based composite hydrogels as the solar evaporator, which inner channel sizes were adjusted through an ice-templating method. Although PVA hydrogels have been actively pursued as a promising material for solar steam generation, the influence of inner channel sizes to material performance has not yet been well investigated. Up to this point, the inner channel sizes of most reported PVA-based solar evaporators have been in the range of several to a few tens of micrometers. In this study, we have narrowed the channel size down to submicrometer range by suppressing growth of ice crystals while freezing the hydrogels. Strong capillary force transport of water over long distances. Therefore, even when the hydrogel was molded into a pillar structure with length of several centimeters, water could be rapidly transported from one end to another, allowing effective evaporation at much increased heights compared to hydrogels with larger channel sizes. The increase in surface area for water evaporation led to a steam generation rate of 6.35 kg m(-2) h(-1) per water surface area covered by the evaporator under 1 sun illumination (100 mW cm(-2)), which is significantly higher than previously reported values. |
关键词 | solar steam photothermal conversion poly(vinyl alcohol) hydrogel physical cross-linking MXene composite |
收录类别 | SCI ; SCIE ; EI |
资助项目 | ShanghaiTech University[2017F0201-000-11] ; School of Physical Science and Technology (SPST) of ShanghaiTech University[EM02161943] |
WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
WOS类目 | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000576676900117 |
出版者 | AMER CHEMICAL SOC |
引用统计 | 正在获取...
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文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/123531 |
专题 | 物质科学与技术学院_硕士生 物质科学与技术学院_PI研究组_Franklin Jongmyung Kim组 物质科学与技术学院_本科生 物质科学与技术学院_博士生 |
通讯作者 | Kim, Franklin |
作者单位 | 1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China; 2.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201203, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
第一作者单位 | 物质科学与技术学院 |
通讯作者单位 | 物质科学与技术学院 |
第一作者的第一单位 | 物质科学与技术学院 |
推荐引用方式 GB/T 7714 | Li, Chuang,Fan, Li,Zhu, Runzhi,et al. Adjusting Channel Size within PVA-Based Hydrogels via Ice Templating for Enhanced Solar Steam Generation[J]. ACS APPLIED ENERGY MATERIALS,2020,3(9):9216-9225. |
APA | Li, Chuang.,Fan, Li.,Zhu, Runzhi.,Li, Xin.,Wen, Piao.,...&Kim, Franklin.(2020).Adjusting Channel Size within PVA-Based Hydrogels via Ice Templating for Enhanced Solar Steam Generation.ACS APPLIED ENERGY MATERIALS,3(9),9216-9225. |
MLA | Li, Chuang,et al."Adjusting Channel Size within PVA-Based Hydrogels via Ice Templating for Enhanced Solar Steam Generation".ACS APPLIED ENERGY MATERIALS 3.9(2020):9216-9225. |
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