Abstract
A thermo-responsive conductive hydrogel membrane (PD- f -Ca 2+ /Gel) suitable for filtration of cells, water purification , and thermal sensing owing to the volume transition is successfully fabricated. The influence of temperature on the hydrogel changes electronic performance, showing 16.57 μF cm −2 and 12.91 μF cm −2 at 25 °C and 55 °C, respectively. Exposing PD- f -Ca 2+ /Gel to heat promotes volume transition, reducing the pore size of the hydrogel from 12 μm (25 °C) to 2 μm (45 °C). The conductive membrane displayed cell filtration efficiency of 22.96% (25 °C) and 71.83% (37 °C). Temperature-sensitive membrane sensors exhibit recyclable purification of oil-in-water (efficiency at 24.81%) and bacteria-contaminated water (100% efficiency). • Design of conductive membrane via thermo-responsive controllable pore size and conductivity. • The hydrogel conductivity was improved by sp 2 -rich polymer dots with ionic complex. • Synchronous sensing of temperature and pressure through distinguished electronic signal. • Design of sensor for temperature and engineering of cell filtration monitored via wireless system. • In situ monitoring for water filtration of bacteria-contaminated water and oil-in-water.
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