Salt crystallization is a key factor restricting the long-term application of solar desalination. In this study, a new type of solar evaporator with loose lateral channels was successfully prepared to control the salt crystallization phenomenon during solar evaporation process. The evaporation rate and solar evaporation efficiency of the prepared evaporator increased to 1.32 kg/m² h and 88%, respectively. The evaporation rate was maintained above 1.2 kg/m² h when the high concentration brine was used for evaporation treatment for a long time, and the salt crystallization zone was limited to the edge of the photothermal layer. The re-dissolved polyethylene glycol (PEG) constructed the smooth lateral channels for salt solution transport in the graphene oxide (GO) photothermal layer, and the concentrated salt solution was more likely to be transported laterally to the edge of GO layer due to the resistance of upward transport during solar evaporation. Because the formation area of crystalline salt was limited to the edge of the photothermal layer, the effective evaporation area of the photothermal layer was maintained, thereby ensuring continuous solar desalination.

盐的结晶是限制太阳能脱盐的长期应用的关键因素。在这项研究中，成功​​制备了一种新型的具有松散的横向通道的太阳能蒸发器，以控制太阳能蒸发过程中的盐结晶现象。所制备的蒸发器的蒸发速率和太阳蒸发效率分别提高到1.32 kg / m ²  h和88％。蒸发速率保持在1.2 kg / m ^2以上 当将高浓度盐水长时间用于蒸发处理时，盐的结晶区域仅限于光热层的边缘。重新溶解的聚乙二醇（PEG）构成了盐溶液在氧化石墨烯（GO）光热层中传输的光滑横向通道，并且由于电阻的原因，浓盐溶液更可能横向传输到GO层的边缘太阳蒸发过程中的向上迁移 因为结晶盐的形成区域限于光热层的边缘，所以维持了光热层的有效蒸发面积，从而确保了连续的太阳能脱盐。