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Development of a multifunctional graphene/Fe-loaded polyester textile: robust electrical and catalytic properties
Mohammad Neaz Morshed1, Milad Asadi Miankafshe, Nils-Krister Persson
1Textile Materials Technology, Department of Textile Technology, The Swedish School of Textiles, Faculty of Textiles, Engineering and Business, University of Borås, SE-50190, Borås, Sweden.
Dalton Transactions (Cambridge, England : 2003)
|November 17, 2020
Summary
A new graphene and iron-loaded polyester fabric was developed using a simple coating method. This multifunctional textile exhibits enhanced electrical conductivity and effectively removes pollutants from water.
Area of Science:
- Materials Science
- Nanotechnology
- Textile Engineering
- Green Chemistry
Background:
- Development of advanced materials with combined electrical and catalytic properties is crucial for multifunctional textiles.
- Polyester fabrics (PET) offer a versatile substrate, but require modification to impart novel functionalities.
- Graphene and iron nanoparticles are promising candidates for enhancing conductivity and catalytic activity.
Purpose of the Study:
- To develop a graphene/Fe loaded polyester fabric with robust electrical and catalytic properties using a simple coating-incorporation method.
- To investigate the role of hyperbranched poly(amidoamine) (PAMAM) dendrimer as a binder for uniform GO/rGO coating and Fe0 loading.
- To evaluate the electrical conductivity and catalytic efficiency of the modified fabrics for water pollutant removal.
Main Methods:
- A simple coating-incorporation method was employed to load graphene oxide (GO/rGO) and zerovalent iron (Fe0) nanoparticles onto polyester fabric (PET).
- Hyperbranched poly(amidoamine) (PAMAM) dendrimer was used as a binder, applied before and after nanoparticle loading.
- Fabric characterization included sessile droplet goniometry, ζ-potential, K/S coating evenness, SEM, XPS, FTIR, TGA, DSC, and sheet resistance (Rsh) analysis. Catalytic activity was assessed using UV-vis spectroscopy for crystal violet dye removal.
Main Results:
- Successful and uniform coating of GO/rGO and loading of Fe0 on PET fabric was achieved.
- The PET-PAM-rGO-Fe0 fabric exhibited the lowest sheet resistance (0.74 ± 0.13 kΩ sq-1), indicating high electrical conductivity.
- Fe0-loaded samples demonstrated effective catalytic removal of crystal violet dye (∼99% in one hour), with PET-PAM-rGO-Fe0 showing superior performance.
Conclusions:
- The developed graphene/Fe loaded polyester fabric possesses excellent electrical conductivity and catalytic activity.
- PAMAM plays a critical role in achieving uniform rGO coating and high Fe0 loading, enhancing the fabric's multifunctional properties.
- These findings pave the way for developing smart, multifunctional textiles for combined smart applications and green chemistry solutions.
