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2D+3D供水的木基光热蒸发器及其性能评价

孙乐汀 刘会娥 陈爽 于洁 李婷

孙乐汀, 刘会娥, 陈爽, 等. 2D+3D供水的木基光热蒸发器及其性能评价[J]. 复合材料学报, 2024, 42(0): 1-9.
引用本文: 孙乐汀, 刘会娥, 陈爽, 等. 2D+3D供水的木基光热蒸发器及其性能评价[J]. 复合材料学报, 2024, 42(0): 1-9.
SUN Leting, LIU Hui’e, CHEN Shuang, et al. Property assessment of wood-based photothermal evaporator with 2D+3D water supplying[J]. Acta Materiae Compositae Sinica.
Citation: SUN Leting, LIU Hui’e, CHEN Shuang, et al. Property assessment of wood-based photothermal evaporator with 2D+3D water supplying[J]. Acta Materiae Compositae Sinica.

2D+3D供水的木基光热蒸发器及其性能评价

基金项目: 国家自然科学基金 (22078366)
详细信息
    通讯作者:

    刘会娥,博士,教授,研究方向为新型碳材料制备 E-mail: liuhuie@upc.edu.cn

  • 中图分类号: X703; TB332

Property assessment of wood-based photothermal evaporator with 2D+3D water supplying

Funds: National Natural Science Foundation of China (No.22078366)
  • 摘要: 近年来,随着经济和社会快速发展,全球淡水资源需求量不断增加,导致全球淡水资源愈加紧缺。海水淡化是目前解决淡水短缺问题最好的方式之一。为实现海水的快速蒸发,本课题制备了高度为20 mm、碳化层厚度为3 mm的脱木素轻木木基光热材料(CDW),通过SEM、FT-IR、Raman光谱、Uv-Vis-NIR吸收光谱等表征实验证实所制备的材料具有丰富的孔道和良好的吸光性能,有利于水的光热蒸发。构建2D+3D供水的小型光热蒸发器,采用吸水纸向光热材料供水,对所制备的CDW材料进行了光热水蒸发性能评价,所获得的平均蒸发速率为1.5310 kg/(m2·h),较碳化原木有明显提升。通过与无供水情况下的光热实验对比,证实吸水纸能够稳定给材料提供水源;通过与材料直接接触水面的3D供水情况作对比,证实了2D+3D供水结构的优越性。

     

  • 图  1  光热实验示意图 (a)装置整体(1—氙灯,2—小型蒸发器,3—电子天平); (b)2D+3D供水通道示意图(1—碳化层,2、4、9—PS隔热泡沫,3—材料输水层,5—空气层,6—吸水纸,7—水体,8—烧杯)

    Figure  1.  Schematic diagram of photothermal experiment (a) Apparatus(1- xenon lamp, 2- small evaporator, 3- elec-tronic balance); (b)Schematic diagram of 2D+3D water supply channel(1- carbonization layer, 2、4、9- PS insulated foam, 3- material water transport layer, 5- air, 6- absorbent paper, 7- water, 8- beaker)

    图  2  横切面的SEM (a)轻木原木(Mag=500×X); (b)脱木素木(Mag=500×X)

    Figure  2.  SEM of cross section (a)balsa (Mag=500×X); (b) delignified wood (Mag=500×X)

    图  3  纵切面的 SEM (a)轻木原木(Mag=200×X); (b)脱木素木(Mag=200×X)

    Figure  3.  SEM of longitudinal section (a)balsa (Mag=200×X); (b) delignified wood (Mag=200×X)

    图  4  碳化脱木素轻木木基光热材料(CDW)碳化层的横切面SEM (a) Mag=500×X;(b) Mag=100×X

    Figure  4.  SEM of photothermal material based on a deligni-fied balsa wood (CDW) carbonized layer’s cross section (a) Mag=500×X; (b) Mag=100×X

    图  5  CDW碳化层的纵切面SEM: 100 μm(Mag=100×X)

    Figure  5.  SEM of CDW carbonized layer’s longitudinal section: 100 μm (Mag=100×X)

    图  6  CDW和轻木原木的Uv-Vis-NIR吸收光谱

    Figure  6.  Uv-Vis-NIR absorption spectra of CDW and balsa

    图  7  CDW、脱木素木和轻木原木的FT-IR谱图

    Figure  7.  FT-IR of CDW, delignified wood and balsa

    图  8  CDW、脱木素木和轻木原木的拉曼谱图

    Figure  8.  Raman of CDW, delignified wood and balsa

    图  9  CDW在3 h内的有无供水情况 (a)水蒸发量曲线图;(b)材料顶面温度曲线图

    Figure  9.  CDW with or without water supply within 3 hours (a) weightlessness curves of water; (b) temperature curve of materials' surface

    图  10  材料(CDW、原木、脱木素木、碳化原木) 在 4 h 内 (a)水蒸发量曲线图;(b)材料顶面温度曲线图

    Figure  10.  Material (CDW, balsa, delignified balsa wood, carbonized balsa wood) within 4 hours (a) weightlessness curves of water; (b) temperature curve of materials' surface

    表  1  CDW与其他文献工作报道的材料对比表

    Table  1.   Comparison of materials reported by CDW and other literatures (1 sun)

    MaterialEvaporation rate/(kg·(m2·h)−1)Evaporation efficiency/%Reference
    APDA-Wood0.9177.0Zou et al.(2021)
    CS-Wood0.9567.9Wang et al.(2019)
    F-Wood1.0572.0Xue et al.(2020)
    CPS1.2082.2Lu et al.(2020)
    Fe-D-Wood1.3073.0Song et al.(2021)
    ALD/Chinese Ink-coated Wood1.3182.2Yang et al.(2019)
    PPy-Wood1.3383.0Huang et al.(2019)
    Wood@ATP1.4290.8Chen et al.(2017)
    CDW1.5391.5This work
    Notes:APDA-Wood: Wood-based material modified with arginine polydopamine; CS-Wood: candle soot-decorated wood;
    F-Wood: Wood treated with alcohol flame; CPS: Carbonized pencil shaving; Fe-D-Wood: Fe3O4/polyvinyl alcohol decorated delignified wood; ALD/Chinese Ink-coated Wood: Wood-based material loaded with Chinese ink; PPy-Wood: Wood loaded with polypyrrole; Wood@ATP: Aluminophosphate-treated wood; CDW: Carbonized delignified wood.
    下载: 导出CSV
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  • 收稿日期:  2024-03-05
  • 修回日期:  2024-03-28
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