A Facile Approach to Fabricate Sustainable and Large-Scale Photothermal Polydopamine-Coated Cotton Fabrics for Efficient Interfacial Solar Steam Generation

Abstract

A facile approach to fabricate sustainable and largescale polydopamine (PDA) and silver nanoparticle (AgNP)-coated cotton fabrics (P-Ag-P@CFs) as photothermal solar evaporators for efficient interfacial solar steam generation was proposed. The P-Ag-P@CFs were facilely fabricated in a large scale (2.3 m × 1.0 m) by coating PDA and AgNPs on cheap and green cotton fabrics via the self-polymerization of dopamine through a dip-coating combined with oven drying method and in situ reduction of Ag + by dopamine, respectively. Thanks to the synergistic effect of PDA and AgNPs, the P-Ag-P@CFs show remarkable light absorption and solar-tovapor efficiency (over 90% for deionized water under 1-sun irradiation), resulting in a high evaporation rate of 1.378 kg m −2 h −1 . Moreover, the P-Ag-P@CFs display an excellent purification efficiency and degree for several kinds of aqueous solutions, such as seawater, simulated sewage, and industrial wastewater. The desalinated water is compliant with the standards of drinking water.

Manganese-derived biomaterials for tumor diagnosis and therapy

“…These methods have overcome the limitations associated with harmful chemicals and excessive energy consumption prevalent in industrial processes [ 71 ]. Biological agents such as bacteria, fungi, algae, and plants have been used for the green synthesis of manganese nanoparticles [ 72 ]. Green synthesis retains the advantages of nanomaterials and encompasses various beneficial properties, including antibacterial characteristics, natural reducing capabilities, and stability.…”

Recent Advances and Challenges of Metal‐Based Materials for Solar Steam Generation

“…Li et al [237] combined PANI with Ag NPs to form a Schottky heterostructure, which extended the light absorption range of Ag NPs from UV to visible light and improved the photothermal conversion efficiency. Zhang et al [238] obtained an efficient interfacial SSG evaporator by coating PDA and Ag NP on cotton fabrics. PDA could prevent Ag NPs from being oxidized, and due to the synergistic effect with Ag NPs, the obtained evaporator showed remarkable light absorption (more than 93% in the broadband wavelength of 300-1400 nm) and evaporation efficiency.…”

“…Zhang et al. [ 238 ] obtained an efficient interfacial SSG evaporator by coating PDA and Ag NP on cotton fabrics. PDA could prevent Ag NPs from being oxidized, and due to the synergistic effect with Ag NPs, the obtained evaporator showed remarkable light absorption (more than 93% in the broadband wavelength of 300–1400 nm) and evaporation efficiency.…”

Photothermal Particles-Based Fluidized Evaporation for Solar Seawater Desalination

“…Solar-thermal conversion and steam generation (SCSG) can be divided into three technologies based on the methods of receiving solar energy and heat transfer: heat produced at the device surface and steam generated in the device, , the method based on volumetric solar absorption, and solar interfacial evaporation technology. , The solar energy conversion efficiency of the first method is not ideal enough due to the surface reflection of the heat absorber so that the heat utilized for evaporation is significantly lower than the actual solar thermal power. The heat localization is improved by interfacial evaporation technology and can achieve high solar-thermal conversion efficiency. ,, However, potentially costly fabrication, salt accumulation, and contaminant influence still hinder the practical application of interface solar-thermal evaporators. For example, some graphene-based photothermal evaporation films can produce pure water with very high efficiency under ambient conditions and low solar flux. , Chen et al developed a double-layer film structure evaporator to achieve local high temperature, which was conducive to the evaporation of water on the interface surface.…”

“…The heat localization is improved by interfacial evaporation technology and can achieve high solar-thermal conversion efficiency. 3,10,12 However, potentially costly fabrication, salt accumulation, and contaminant influence still hinder the practical application of interface solar-thermal evaporators. For example, some graphene-based photothermal evaporation films can produce pure water with very high efficiency under ambient conditions and low solar flux.…”