Seawater desalination is regarded as a possible way to overcome current shortages of fresh water, and membrane-based air humidification–dehumidification desalination (MHDD) represents a promising technique owing to its high-quality freshwater and cost-effectiveness; however, its development is restricted by membrane fouling. While a superhydrophobic membrane provides resistance to hydrophilic fouling, it remains susceptible to hydrophobic fouling. Here, a polyvinylidene fluoride-ZnO/MXene (PVDF-ZM) membrane, with a reversible conversion between superhydrophobicity and hydrophilicity was fabricated to achieve universal fouling resistance. It earned a competitive permeate flux (3.93 kg·m −2 ·h −1 ) and an excellent salt rejection (>99.5%). The membrane exhibited a strong anti-hydrophilic fouling ability, benefiting from its superhydrophobicity and rough surface. The adsorbed hydrophobic contaminants could desorb from the membrane surface under UV irradiation when transforming the surface wettability into hydrophilicity, exhibiting an anti-hydrophobic fouling ability. Subsequently, the membrane surface returned to the hydrophobic state under dark conditions. The membrane recovered 90% of the original permeation flux, while maintaining a salt rejection of >99.5%, thus realizing membrane self-healing. The PVDF-ZM membrane holds promise for sustainable desalination applications.
With the rapid development of wearable smart devices, medical care equipment, and human-machine application interfaces, the demand for flexible pressure sensors is progressively escalating. Among them, piezoelectric pressure sensors have been widely used due to their self-power supply capability, fast response speed, and relatively simple circuit. In this paper, we construct a multi-component flexible piezoelectric sensor PVDF/ZnO@MXene (PZM) based on electrospun PVDF and hydrothermal-assisted growth of ZnO nanorods and spin-coated multilayer MXene solution. This tactile sensor has high sensitivity (2.32 V N
-1
), ultra-low detection limit (0.01 N) and fast response time (46 ms). It detects subtle physiological signals like vocal cord vibrations and pulse beats, enabling perception and interaction with the external environment. ITZO TFT has the characteristics of high field effect mobility and low energy consumption, which can improve the effectiveness of sensor signal reading, processing and utilization. The integration of PZM with ITZO TFT into a sensor system can achieve signal amplification and ensure stable signal acquisition over 500 cycles, indicating its potential as a wearable electronic device for personalized identification, human-computer interaction, and soft robot manufacturing in the future.
危险品化学品经营许可证（带存储）