Composite membrane consisting of molybdenum disulfide/bacterial cellulose nanofibres for osmotic energy conversion using tannic acid-assisted etching
Molybdenum disulfide/bacterial cellulose nanofibres(MoS2/BNC)composites were prepared by one-step hydrothermal method.A large-size TA-MoS2/BNC nanosheets obtained by tannic acid(TA)-assisted exfoliation.The polyethersulfone(PES)supported composite membranes were successfully prepared by vacuum-assisted filtration.The tensile strength,failure stress,and yield strength of the resultant TA-MoS2/BNC composite membrane is up to 10.04 MPa,2.38 MPa and 7.78 MPa,respectively,showing high-performance assembling.The highly Na+ion-selective TA-MoS2/BNC composite membranes with the thickness of 870 nm produced an output power density of 8.79 W/m2 at an effective area of 7.07 mm2,which is about 207 times larger than that of the conventional testing area of 3.4×104 pm2,and captured an output power density of 14.18 W/m2 under a 100-fold salinity gradient,exceeding the reported membrane.These provide a strong guarantee of efficient conversion of osmotic energy for MoS2-based membrane.
osmotic energy conversionmolybdenum disulfidecomposite membranetannic acidbacterial nanocellulose
万方数据
