Application of a novel bimetallic hydrogel based on iron and cobalt for the synergistic catalytic degradation of Congo Red dye. Issue 8 (20th March 2019)

• Record Type: Journal Article
• Authors: Aftab, Tallal B.; Hussain, Asif; Li, Dengxin
• Is Part Of: Journal of the Chinese Chemical Society. Volume 66:Issue 8(2019)
• Page Start: 919
• Page End: 927
• Publication Date: 2019-03-20
• Subjects: bimetal catalyst -- catalysis -- dye wastewater -- hybrid -- polyacrylamide; Chemistry -- Periodicals; Electronic journals; 540.5
• DOI: 10.1002/jccs.201800388
• Languages: English
• ISSNs: 0009-4536

Abstract

Abstract : Herein, we developed a bimetallic (Fe and Co) polyacrylamide (PAM) hydrogel (FeCo@PAM) to investigate the synergistic catalytic degradation of Congo Red (CR) dye. The structure and the morphology of the FeCo@PAM hydrogel were analyzed using the Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy ( SEM ), and energy‐dispersive X‐ray spectrometry (EDX). To study the chemical composition of our catalyst, the FTIR technique was applied. The SEM and EDX confirmed the presence of bimetallic ions in the PAM hydrogel. All critical parameters of the catalyst, that is, mass, dye concentration, H2 O2 dose, temperature, and pH were investigated and optimized. The synergistic oxidative catalytic degradation of the CR dye using FeCo@PAM under the optimal conditions was calculated to be 96.45% (60 min), which was 11.26% (75 min) higher than that of Fe@PAM and 11.69% (75 min) higher than that of Co@PAM. For FeCo@PAM, not only the degradation percentage increased also the reaction time decrease was phenomenal. These experiments verified the synergistic oxidative degradation of the CR dye exhibited by the FeCo@PAM catalyst. The Kinetic isotherm studies were also studied to determine the CR degradation progression. Our FeCo@PAM catalyst also demonstrated to be highly recyclable, as high CR dye degradation was accomplished up to three consecutive cycles. Abstract : A polyacrylamide hydrogel based bimetallic catalyst FeCo@PAM was fabricated and was then employed to study the synergistic effects for the catalytic degradation of Congo red dye, and all critical system parameters were optimized.