Affiliation:
1. College of Chemistry and Chemical Engineering Shihezi University/State Key Laboratory of Green Process of Chemical Industry jointly built by the province and Ministry Shihezi Xinjiang 832003 P. R. China
2. Xinjiang Key Laboratory of New Functional Materials Chemistry, College of Chemistry and Environmental Sciences Kashi University Kashi 844000 P. R. China
Abstract
AbstractSolar energy is an inexhaustible clean energy, and solar evaporation salt water desalination is a promising technology. However, the low evaporation efficiency caused by intermittent solar irradiation is still the main obstacle in the practical application of interface evaporation. A new type of interfacial evaporation material is developed by using the porous adsorption method to fill the phase change material (PCM) paraffin (IPW) into the halloysite nanotubes (HNTs), using polydopamine (PDA) as the photothermal material and encapsulation agent and bacterial cellulose (BC) as the carrier. The low‐temperature crosslinking method prepares the IPW@HNTs@ PDA‐BC phase change composite aerogel. The novel interfacial evaporation material preparation process is simple, and the aerogels can be prepared quickly under normal pressure, which overcomes the disadvantages of the traditional porous adsorption method and long‐time freeze‐drying of aerogels. Under 1 kW m−2 light, the evaporation rate of the PCM is 3.43 kg m−2 h−1, and the photothermal conversion efficiency is 95%. In the dark environment (10 min), the evaporation rate is 2.80 kg m−2 h−1, and the photothermal conversion efficiency is 52.8%. The material exhibits excellent evaporation in acidic, alkaline water, and industrial wastewater. Shortly, it can be used as a promising material for evaporating clean water.
Subject
Materials Chemistry,Organic Chemistry,Polymers and Plastics,Physical and Theoretical Chemistry,Condensed Matter Physics