A novel gradient structured nanofiber and silver nanowire composite membrane for multifunctional air Filters, oil water Separation, and health monitoring flexible wearable devices

An ultrafine spider-like carbon nanonet for high performance air filters, health monitoring sensors, and green energy generators

“…The preparation of a PVA-co-PE nanober suspension follows our previous literature. [33][34][35] The NF air lters were achieved by spray coating 32 mL of 2 wt% PVA-co-PE nanober suspension onto the surface of 20 g m −2 PP meltblown nonwoven (Handan Hengyong Protective Cleaning Supplies Co., Ltd.), which was soaked in isopropanol (IPA, Sinopharm Chemical Reagent Co., Ltd) solution for 12 hours to effectively remove electret charges before use. 1 mL, 2 mL, and 3 mL of single wall carbon nanotubes (SWCNTs) (0.15 wt%, Xianfeng Nanomaterial Technology Co., Ltd) solutions were diluted with 15 mL of deionized water followed by sonication with a probe sonicator (Ningbo Xinzhi Biotechnology Co., Ltd, Zhejiang Province, China) to obtain well dispersed SWCNT solutions.…”

“…6d, it is found that the respiration rate of the subject is about 16 times per min, which is close to the normal level of 12-20 times per min, whereas it increases to approximately 55-56 times per min aer exercise. 26,34 In addition, the assembled resistance sensor can also detect humidity variations ranging from 35% to 70% under certain environmental conditions (Fig. S6, ESI †).…”

Synergistic Enhancement of Filtering Efficiency and Antibacterial Performance of a Nanofiber Air Filter Decorated with Electropolarized Lithium-Doped ZnO Nanorods

“…In this respect, the attempts have been made to integrate inorganic nanomaterials on the surface of organic nanofibers to increase filtering efficiency and achieve antibacterial properties. 16,17 In this work, we aimed to present the fabrication and performance of a Li-doped ZnO NR-decorated poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) NF air filter with enhanced PM 1.0 filtering efficiency and antibacterial effect, realized by the polarization of Li-doped ZnO NRs and PVDF-TrFE NFs. Using this organic−inorganic hybrid material, improved filter performance and antibacterial properties were achieved by exploiting the dipole effect.…”

“…Thus, by decorating the fibrous filter, made of polymer, with ZnO NRs, forming organic and inorganic hybrid structures, PM filtering efficiency and antibacterial performance can be simultaneously improved. In this respect, the attempts have been made to integrate inorganic nanomaterials on the surface of organic nanofibers to increase filtering efficiency and achieve antibacterial properties. , …”

Waste PET Derived Beetle-like Membrane with High Mechanical Robustness for Regenerable Emulsion Separation

“…The frequent leakage of complex and recalcitrant oil resources has resulted in significant environmental damage, including the depletion of precious water resources and the destruction of eco-systems. , To address these challenges, superwetting membrane technology has been widely used in oil/water treatment due to its advantages of environmental protection, easy operation, and no secondary pollution . However, compared with superwetting membranes that lack a screening mechanism for small-sized droplets and exhibit poor separation efficiency, biomimetic materials with efficient removal of tiny droplets and selective superwettability have attracted people’s widespread attention. − Such as, Ma et al reported PDMS/TA-Mn + /PI membrane by simulating the micronano structure on the surface of lotus effect and showed high flux and separation efficiency for various oil–water mixtures, which is attributed to its selective superwetting and submicron pore size .…”