Abstract
The present investigation reports the greener synthesis and characterization of novel acrylic acid grafted amphoteric chitosan/TiO2 (CAT) bionanocomposites using ultrasonic radiations. This was done by grafting of acrylic acid onto chitosan in the presence of potassium persulfate by free radical polymerization reaction. The uniform distribution of metal oxide in CA/TiO2 nanocomposites was achieved on grafted acrylic acid/chitosan which contains a weak anionic group (-COOH) using ultrasonication technique. Physiochemical techniques such as X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), Fourier Transform Infra-Red spectroscopy (FT-IR), Energy Dispersive X-ray spectroscopy (EDX), and Thermal Gravimetric Analysis (TGA) were employed to characterize synthesized CAT. Nanocomposite CAT was applied for degradation of industrial dye. Malachite green (MG) often presents in the waste waters. The degradation kinetics were studied by monitoring the photocatalytic reaction for degradation of MG under visible light, and the rate constant of the reaction was found to be 7.13x10−3min−1. The current research work opens vistas for the new dimensions in the area of water treatment by solving the issues related to degradation reaction efficiency in visible light and cost effectiveness.
Highlights
The synergy between organic and inorganic materials offers the potential for the development of new generation innovative organic-inorganic composites with diversified applications in various areas such as catalysis, photo catalysis, separation technology, energy storage, and drug delivery [1,2,3]
The present paper reports the greener synthesis of amphoteric chitosan/acrylic-TiO2 bionanocomposites using environmentally friendly ultrasound waves and their performance in white light induced photocatalytic degradation of industrial dye, malachite green
Photocatalytic degradation of malachite green dye has been studied under three different conditions: (i) under white light, (ii) synthesized TiO2 under white light, (iii) CAT bionanocomposites under white light (Figure 6)
Summary
The synergy between organic and inorganic materials offers the potential for the development of new generation innovative organic-inorganic composites with diversified applications in various areas such as catalysis, photo catalysis, separation technology, energy storage, and drug delivery [1,2,3]. Organic-inorganic nanocomposite materials are not the simple physical mixtures, but intimately linked via Advances in Polymer Technology weak interactions/bond or strong interactions/covalent bond. These interactions have a profound effect on the material properties, in particular at the interface interaction, as well as on inner interfaces. Poly(vinyl alcohol)/ poly(acrylic acid)/carboxyl-functionalized graphene oxide nanocomposite membranes were prepared using electrospinning technique and modified with TiO2 nanoparticles. Their photocatalytic activity towards dye degradation and regeneration tendency was investigated [24]. The present paper reports the greener synthesis of amphoteric chitosan/acrylic-TiO2 bionanocomposites using environmentally friendly ultrasound waves and their performance in white light induced photocatalytic degradation of industrial dye, malachite green
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