Carbonized daikon for high efficient solar steam generation
Carbonized daikon for high efficient solar steam generation
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用于高效太阳能蒸汽发电的碳化萝卜
DOI：
10.1016/j.solmat.2018.11.015
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发表时间：
2018
影响因子：
6.9
通讯作者：
Haitao Zhu
中科院分区：
文献类型：
--
作者：
Mengmeng Zhu;Jialiang Yu;Cunlin Ma;Canying Zhang;Daxiong Wu;Haitao Zhu
利用太阳能产生蒸汽是海水淡化和工业废水处理的一个很有前途的策略。选择一种廉价且可规模化利用的农作物--萝卜作为原料，对其进行碳化处理。白萝卜具有高度发达的蜂窝状细胞结构，提供了许多相互连接的通道。紧密堆积的孔隙充当光子陷阱，导致在可见光区域中超过95.5%和在近红外区域中超过93.5%的太阳能吸收增强。优良的亲水性和相互连接的通道的萝卜提供了强大的毛细管力的快速运输的水。因此，在一个太阳的照射下，白萝卜的水分蒸发率为1.57 kg m− 2 h − 1，太阳能蒸汽效率为85.9%。白萝卜对海水和污水中的水分蒸发也表现出很好的性能，实现了水与污染物的分离，显示了其应用的多功能性。
Steam generation by efficient utilization of solar energy is a promising strategy in seawater desalination and industrial wastewater treatment. Daikon, a cheap and scaled available crop, was chosen as raw material which was subjected to a carbonization process. The carbonized daikon possesses highly developed honeycomb cellular structure providing numerous interconnected channels. The close-packed pores act as photon traps leading to enhanced solar absorption of more than 95.5% in the visible region and more than 93.5% in the near infrared region. The excellent hydrophilic nature and the interconnected channels of the carbonized daikon provide strong capillary force for the quick transport of water. As a result, under one-sun irradiation, the carbonized daikon delivers a water evaporation rate of 1.57 kg m−2h−1and a solar steam efficiency of 85.9%. The carbonized daikon also shows great performance toward water evaporation from seawater and contaminated water, realizing the separation of water from pollutants and indicating its application versatility.