Dyeable PAN/CuS Nanofiber Membranes with Excellent Mechanical and Photothermal Conversion Properties via Electrospinning

Abstract

Wearable heaters based on photothermal fibers have gained considerable attention for personal thermal management in recent years. However, photothermal fabrics aiming at personal comfort and energy conversion performance still present severe challenges in their design, dyeability, mechanical properties, and practical application. Herein, polyacrylonitrile (PAN)/copper sulfide (CuS) nanofiber membranes with good photothermal and mechanical performance and dyeability were fabricated by electrospinning. The PAN/CuS-5 wt % nanofiber membranes not only exhibit excellent photothermal conversion performance (up to 88 °C within 15 s) and good heating cycle stability under one solar irradiation (1 kW m −2 ) but also high tensile strength (9.86 Mpa). In addition, the PAN/CuS membranes still retained good photothermal properties after the dyeing process. This work develops a robust strategy for constructing photothermal and dyeable fabric and has potential application in personal thermal management.

Hierarchical porous dual-mode thermal management fabrics achieved by regulating solar and body radiations

“…The thin MXene layer endows the whole fabric with a photothermal conversion efficiency of 37.5% (Note S2, ESI†), which is higher than MoSe 2 nanosheets (32.8%), 32 MXene@PPy-PC (26.0%), 33 and PAN/CuS-10 (36.32%). 34 By virtue of the high photothermal conversion ability of MXene, MXene/PPAN F brings a temperature increase of ∼4 °C to the naked simulated skin under sunlight irradiation in an outdoor environment (Fig. 4d).…”

Dual-mode harvest solar energy for photothermal Cu2-xSe biomineralization and seawater desalination by biotic-abiotic hybrid

“…Most of the reported works have focused on traditional chemical synthesis methods, involving aggressive chemical agents, harsh synthesis conditions, intensive energy consumption, and complex synthesis processes (Supplementary Table 5 ). Besides, the anchored photothermal material can detach from the supporting material during long-term irradiation or high-frequency use, resulting in poor durability 42 . Here, the as-prepared Bio-Cu 2-x Se@MR-1@PVDF was prepared at room temperature using environmentally benign reagents, providing a more sustainable manufacturing strategy.…”

Electrospun Nanofiber Materials for Photothermal Interfacial Evaporation

“…As shown in Figure 5 a–d, instead of evenly heating the majority of the water, the self-floating black titanium dioxide nanocage covering concentrates the temperature increases at the water–air interface [ 54 ]. Based on the semiconductor effect, polyacrylonitrile (PAN)/CuS nanofiber films have good photothermal conversion properties in addition to a strong heating-cycle stability and high tensile strength [ 59 ] ( Figure 5 e–g). As efficient photothermal evaporation or catalytic materials, other semiconductors (SiO 2 [ 60 , 61 , 62 , 63 ], Co 3 O 4 [ 64 ], ZnO [ 65 ]) have also been reported.…”