Figure 4. Solar vapor generation under irradiation of 0.2 W cm-2. (a) A schematic diagram of the system for measuring water evaporation. (b) The mass change of water for AM/Ch gel, Ch gel and pure water. (c) The evaporation rate of the AM/Ch gel, Ch gel and pure water. (d) Temperature changes of the AM/Ch gel, Ch gel and pure water. (e) IR thermal images of the surface temperature of the AM/Ch gel, Ch gel and water with irradiation time. (f) A multi-dimensional comparison of AM/Ch gel evaporator with other photothermal material evaporators, including carbon quantum dots (CQDs),[37]La0.5Sr0.5CoO3(LSC),[38] reduced graphene oxide (rGO),[39] polyaniline (PANI),[40] carbon nanotubes (CNT),[41] nickel oxide (NiO),[42] MXene,[43]Co2.67S4,[44]polydopamine (PDA).[45] (g) Concentration changes of Na+, Mg2+, K+, and Ca2+ ions before and after treatment with AM/Ch gel evaporator. (h) Absorption intensity curve and digital photos of methyl orange and methylene blue contaminated water before and after evaporation purification.