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.