A MAX phase (Ti3AlC2) as a performance enhancer for poly(lactic acid) electrospun membranes in steam generation and solar desalination

Monstera adansonii-inspired lignocellulose-derived bionic solar evaporator for solar steam generation

A novel three-dimensional solar evaporator (PPy@CC) inspired by monstera adansonii was developed by the carbonization and polypyrrole decoration of waste lignocellulose (corncob). The original microscopic porous structure was retained by the carbonization of corncob, and the bionic monstera adansonii leaves were formed by loading polypyrrole on its evaporation interface, which enhanced the absorption capacity of sunlight and provided sufficient diffusion channels for water through the porous interconnect structure. The results showed that the PPy@CC has the average evaporation rates of 2.417 kg m-2 h-1 and 2.048 kg m-2 h-1 respectively in pure water and 3.5 wt% seawater, and has better salt resistance and stability. In addition, the PPy@CC evaporator can also be used to efficiently generate water steam in alkaline and acidic wastewater, the pH values of the desalinated water obtained in both scenarios were neutral, showing excellent wastewater treatment effect. Outdoor experiments further confirmed its potential for practical applications, an average evaporation rate of 2.822 kg m-2 h-1 in 3.5 wt% seawater can be obtained, and stable performance over long periods of operation with no salt crystallization observed. Therefore, PPy@CC was a solar evaporator with practical application potential, which was suitable for seawater desalination and industrial wastewater treatment.

Fabrication of advanced cellulose-based devices for solar desalination: A review

Materials derived from cellulose have attracted considerable attention as affordable substrates for solar desalination, contributing to the solution of the worldwide water crisis. These substances allow for exact control of structural features and improve light absorption in photothermal processes, promoting specific interactions between light scattering and reflection within their porous structure. Moreover, cellulose can be readily transformed into nano- and microporous forms, which enhances water transportation due to its inherent three-dimensional properties. This review examines the design and utilization of cellulose-based solar evaporators for desalination purposes. With benefits such as biocompatibility, environmental friendliness, economic viability, renewable nature, sustainability, and versatility for diverse designs, cellulose-derived materials are set to play a vital role in addressing global water issues.