Synthesis and characterization of nano-fibres graphene oxide for sensing humidity
Keywords:Graphene oxide, electrospinnig, Inter-digited electrodes, Electric characterizatio
Relative humidity is the prime parameter in industrial processes which are measured through ceramic, metal oxide and polymeric sensors. Ceramic and metal oxide sensors shows nonlinear resistive behaviours with increasing relative humidity and high sintering temperature for hydro-desorption. Transformation of ceramic and metallic sensors with the polymeric sensors is due to its eco-friendly synthesis fabrication, less heat intensive and high sensitivity. In this research work, a polymeric sensor of enhanced electric properties with sustainable captive and resistive response was synthesised from nano-fibres graphene oxide for sensing humidity. The synthesized graphene oxide through modified Hammer method was mixed with poly-vinyl alcohol (GO/PVA) in the ratio of 5 wt % for four hours at 90 ºC. Nano fibres of graphene oxide and poly-vinyl alcohol (GO/PVA) solutions were obtained at the 24V DC electric field; 0.5 ml/h feed rate and 10 cm tip-to-collector distance through electrospinnig. GO/PVA fibres were deposited on the silver inter-digited electrodes of 8mm and five combs of 20Îm consecutive distance. SEM analysis shows that the fibres were in nano-range with no major cracks while XRD and FTIR spectrum investigated the finger prints and functional groups of GO and GO/PVA respectively. Parametric study of resistive and capacitive were analysed at difference response and recovery time at various frequency in the range of 0 % to 82% relative humidity.
How to Cite
LicenseAuthors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).