Vertically Aligned Graphene Sheets Membrane for Highly Efficient Solar Thermal Generation of Clean Water,ACS Nano

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Vertically Aligned Graphene Sheets Membrane for Highly Efficient Solar Thermal Generation of Clean Water
ACS Nano ( IF 15.8 ) Pub Date : 2017-04-19 00:00:00 , DOI: 10.1021/acsnano.7b01965
Panpan Zhang ₁ , Jing Li ₁ , Lingxiao Lv ₁ , Yang Zhao ₁ , Liangti Qu ₁

Affiliation

Efficient utilization of solar energy for clean water is an attractive, renewable, and environment friendly way to solve the long-standing water crisis. For this task, we prepared the long-range vertically aligned graphene sheets membrane (VA-GSM) as the highly efficient solar thermal converter for generation of clean water. The VA-GSM was prepared by the antifreeze-assisted freezing technique we developed, which possessed the run-through channels facilitating the water transport, high light absorption capacity for excellent photothermal transduction, and the extraordinary stability in rigorous conditions. As a result, VA-GSM has achieved average water evaporation rates of 1.62 and 6.25 kg m^–2 h^–1 under 1 and 4 sun illumination with a superb solar thermal conversion efficiency of up to 86.5% and 94.2%, respectively, better than that of most carbon materials reported previously, which can efficiently produce the clean water from seawater, common wastewater, and even concentrated acid and/or alkali solutions.

中文翻译：

垂直排列的石墨烯片膜，用于高效清洁水的太阳能热发电

有效利用太阳能清洁水是解决长期水危机的一种有吸引力的，可再生的，环境友好的方式。为此，我们准备了长程垂直排列的石墨烯片状膜（VA-GSM），作为产生清洁水的高效太阳能热转换器。VA-GSM是通过我们开发的防冻辅助冷冻技术制备的，该技术具有促进水传输的贯穿通道，出色的光热传导的高光吸收能力以及在苛刻条件下的非凡稳定性。结果，VA-GSM的平均水蒸发速率为1.62和6.25 kg m ^–2 h ^–1 在1和4的日照下，太阳热转换效率分别高达86.5％和94.2％，优于以前报道的大多数碳材料，它们可以有效地从海水，普通废水甚至浓缩废水中产生纯净水酸性和/或碱性溶液。

更新日期：2017-04-29

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