Seawater evaporation and purification powered by solar energy are considered as a promising approach to alleviate the global freshwater crisis, and the development of photothermal materials with high efficiency is imminent. In this study, cellulose nanofiber (CNF)/MXene/Ni chain (CMN) aerogels were successfully synthesized by electrostatic force and hydrogen bond interaction force. CMN10 achieved a favorable evaporation rate as high as 1.85 kg m− 2 h− 1 in pure water, and the corresponding evaporation efficiency could be up to 96.04%. Even if it is applied to seawater with multiple interference factors, its evaporation rate can still be 1.81 kg m− 2 h− 1. The superior seawater evaporation activity origins from the promoted separation of photoexcited charges and photothermal conversion by the synergy of Ni chain and MXene, as well as the water transport channel supported by the 3D structure frame of CNF. Most importantly, CMN aerogel can maintain water vapor evaporation rates above 1.73 kg m− 2 h− 1 under extreme conditions such as acidic (pH 2) and alkaline (pH 12) conditions. In addition, various major ions, heavy metals and organic pollutants in seawater can be rejected by CMN10 during desalination, and the rejection rates can reach more than 99.69%, ensuring the purity of water resources after treatment. This work shows the great potential of CMN aerogel as a high-efficiency solar evaporator and low-cost photothermal conversion material. Cellulose nanofiber (CNF)/MXene/Ni chain (CMN) aerogels demonstrated high evaporation of water from sea water.

Tour application have a lot of information to offer. Because smart phones’ screen is small, it is necessary to efficiently organize user interface(UI). To have a quantity analysis on human's' attention affected by layout position in tour application UI design, an experiment was proposed and then the data analysis was done. Thirty subjects took part in our experiment and 20 tour application layout images divided into four area of interest (AOI) were taken as the stimulus randomly. Data was recorded by the Tobi Pro X2-30 eye tracker system. The heat maps and gaze plot results were analyzed. And then One-way ANOVA (analysis of variance) statistical method was applied to finding out the significant difference in factor levels. Results show that the active area and eye movements tracking roads within statistic meaning. Moreover, ANOVA (F = 24.28, p = 2.21267e􎂡15 < 0.01) shows that the different positions have significance difference effect on subjects' attention and mean of AOI (4) is a significant difference from other three area. And then the influence degree of AOI (4) (F = 13.90, p = 0.098 > 0.05) is weaker than other regions through the simple test. In conclusion, the tour applications should be considered the layout position effects on improving the attraction for corresponding users.