3(a,b). For ZnO, the nanorods are oriented and assembled to form a flower like structure as given in Fig. 3a. Addition of the Co dopant, develops individual rods with hexagonal cross sections (Fig. 3b). The surface morphology was further confirmed by TEM studies (Fig. 3c,d), which ...
Full size image Conclusions This work has demonstrated, using a rigorous approach, the optimization of processing conditions for the fabrication of piezoelectric thin films using the co-polymer PVDF-TrFE. Indeed, it has been proven that the necessary poling electric field at room temperature is 100...
The copolymerisation of vinylidene fluoride (VDF) monomer with trifluoro ethylene (TrFE) to form PVDF-TrFE co-polymer has been extensively studied for the improvement in the piezoelectric and ferroelectric performance of the PVDF [[29], [30], [31]]. Moreover, the study of relaxation processes...
Full size image Integrating PVDF and TiO2for methylene blue removal The limitations accompanied by membrane separation processes and photocatalytic degradation of contaminants can be solved by coupling both methods to form a hybrid system named photocatalytic membrane reactors (PMRs) (Samuel et al.2022)....
PVDF-OH has been prepared via ozonization and used to graft PMM-co-AA and PBSA polymers. The –OH groups on PVDF-OH react with –COOH group present in PMM-co-AA and PBSA to form an ester. The effects of functionalization and further grafting on the polar β phase formation and piezoele...
An electrospun PVDF-TrFe fiber sensor platform for biological applications Flexible, self-powered materials are in demand for a multitude of applications such as energy harvesting, robotic devices, and lab-on-a chip medical diagno... LT Beringer,X Xu,W Shih,... - 《Sensors & Actuators A ...
Full size image In order to measure the optimal load resistance and the output power from the TENG, various external load resistances were connected in parallel with the nanogenerator, and the output voltages were measured. Load resistances on electrical outputs ranging from 50 kΩ to 6 MΩ have...
Full size image To better disperse TiO2@SrTiO3NWs and make them more compatible with the PVDF matrix, dopamine was used as a surface modifier. The catechol and amino functional groups of dopamine can form covalent and non-covalent interactions with the surface of the TiO2@SrTiO3NW, which lead...
Wu et al. [28] added graphene to PVDF-TrFE to enhance its piezoelectricity and confirmed that the addition of a moderate amount of graphene dramatically improved the capability of power generation. Singh et al. [29] synthesized the NaNbO3/rGO/PVDF composite film and found that rGO worked in...
(PVDF) [16] as well as its copolymers, such as poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE). Among them, PVDF and its copolymers are excellent candidate materials for piezoelectric generators due to their high chemical resistance [...