Preparation of spunlaced viscose/PANI-ZnO/GO fiber membrane and its performance of photocatalytic decolorization

Abstract

In order to solve the increasingly serious problem of printing and dyeing wastewater pollution, a kind of novel, efficient, and reusable spunlaced viscose/polyaniline-ZnO/GO fibrous membrane was fabricated in this work. Specifically, spunlaced viscose/polyaniline conductive fibrous membrane was firstly prepared by in-situ growth method, followed with the growth of zinc oxide (ZnO) and graphene oxide (GO) via the hydrothermal route to obtain spunlaced viscose/PANI-ZnO/GO fibrous membrane (SV@PANI-ZnO/GO membrane). The results show that the decolorization rate of SV@PANI-ZnO/GO membrane for methylene blue (5.0 mg/L) was 97.4% within 120 min, and the decolorization rate remained above 76.7% after five cycles. Moreover, the reaction process conformed to a quasi-first order kinetic model with the apparent rate constant of 0.0209 min–1. Meanwhile, the free radical capture experiment revealed that the main reactive species in the decolorization process was .OH. This work may provide a new method for designing photocatalytic materials for environmental applications.

Recent Advances in the Removal of Organic Dyes from Aqueous Media with Conducting Polymers, Polyaniline and Polypyrrole, and Their Composites

“…Ternary systems are more useful for practical applications ( Table 2 ) but also more difficult to interpret because each component can participate in dye adsorption. The latest examples are: attapulgite/ g -carbon nitride [ 112 ]; bismuth(III) oxyiodide/reduced graphene oxide [ 10 ]; cerium dioxide/polystyrene [ 113 ]; cobalt/zinc ferrite [ 90 ]; sodium bismuthate/polycarbonate [ 114 ]; titanium dioxide/cadmium sulfide [ 97 ]; titanium dioxide/chitosan [ 115 ]; titanium dioxide/poly(vinylidene fluoride) [ 84 , 85 ]; zinc oxide/graphene oxide/viscose [ 116 ]; zinc/magnetite [ 117 , 118 ].…”

Zeolitic imidazolate framework-8 modified bacterial cellulose/sodium alginate composite aerogel for efficient removal of tetracycline hydrochloride

“…4,5 In recent years, various methods for the remediation of wastewater from pollutants have been explored. These include biodegradation and bioadsorption, 6,7 physical adsorption, 8 oxidation reduction method, 9 photocatalytic degradation, [10][11][12][13] ionic resin and membrane filtration. 14,15 Adsorption method is noted as one of the most effective methods to remove various organic pollutants in water due to its advantages in operation cost, simplicity, removal efficiency and practicability.…”