Abstract
An efficient, economical, environment-friendly and easy separable catalyst to treat environmental contaminants is an enduring attention in recent years due to their great potential for environmental protection and remediation. Here we have reported the excellent performance of polyaniline activated heterojunctured Ni0.5Zn0.5Fe2O4 catalyst to degrade azo dye in an aqueous solution at ambient condition. The catalyst was prepared via a simple facile polymerization procedure. The physicochemical properties and structure of the synthesized catalyst was confirmed by TGA, PXRD, FTIR, SEM, HRTEM, XPS, EDX, and DRS techniques. The developed catalyst has shown an accelerated degradation ability of an organic pollutant Orange ll Sodium salt azo dye about 100% for the dye concentration of 50 ppm within five minutes at ambient conditions with 1 g/l loading of catalyst. Simple facile synthesis, easy separation by an external magnet, good reusability and high degradation capability of the catalyst may promote the practical applications of the heterostructured catalyst at ambient condition for water remediation. The present study also explored possible credible charge transfer directions and mechanism of photocatalysis supported by trapping experiments and electrochemical impedance spectroscopy (EIS) measurement for the effective improvement of photocatalytic activity and enhancement of the visible light adsorption.
Highlights
A wide range of applications of synthetic dyes in various industries like food, textile, printing, leather and other industries and rapid increase in the production of dye effluent has become one of the major contributors to water pollution and strongly impacted on the balancing of nature[1]
The X-ray diffraction patterns (XRD) pattern of the Nickel Zinc Ferrite (NZF)@PANi nanofibers revealed that diffraction peaks correspond to the polyaniline semicrystallinity disappeared due the restricted polymer chains alignment in presence of nanopartciles[27] and the crystalline peaks correspond to NZF nanocrystals are focused at (311), (222), (400), (422), (511) with reduced intensity due to polymer coating
The present investigation corroborates that NZF@PANi, an integrated heterostructured nanoscale photocatalyst, has been successfully developed for potential degradation of Orange-II dye with utilization of ambient light absorption and retardation of induced charge carriers in the gradient band structure as well as with easy separation
Summary
A wide range of applications of synthetic dyes in various industries like food, textile, printing, leather and other industries and rapid increase in the production of dye effluent has become one of the major contributors to water pollution and strongly impacted on the balancing of nature[1]. Here we have demonstrated a very simple solvothermal process and easy straightforward strategy to prepare magnetically separable Ni0.5Zn0.5Fe2O4@PANi photocatalyst via an in-situ oxidative polymerization and its catalytic activity for removal of Orange II sodium salt, a non-biodegradable anionic azo dye, from water under ambient conditions.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
