Preparation and characterization of nano-TiO2/chitosan/poly(N-isopropylacrylamide) composite hydrogel and its application for removal of ionic dyes

Zhou, Jianhua; Hao, Bianzhi; Wang, Linben; Ma, Jianzhong; Cheng, Wenjing

doi:10.1016/j.seppur.2016.11.069

Cited by 78 publications

(17 citation statements)

References 29 publications

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“…Zhou et al [92] prepared a nano-TiO 2 /CS/poly(N-isopropyl acrylamide) composite hydrogel for the removal of ionic dyes as acid fuchsin (AF). The hydrogel composite exhibited high photocatalytic degradation of AF with a removal rate of 90% under UV radiation after 160 min.…”

Section: Environmental Applicationsmentioning

confidence: 99%

Chitosan-TiO2: A Versatile Hybrid Composite

et al. 2020

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In recent years, a strong interest has emerged in hybrid composites and their potential uses, especially in chitosan-titanium dioxide (CS-TiO 2 ) composites, which have interesting technological properties and applications. This review describes the reported advantages and limitations of the functionalization of chitosan by adding TiO 2 nanoparticles. Their effects on structural, textural, thermal, optical, mechanical, and vapor barrier properties and their biodegradability are also discussed. Evidence shows that the incorporation of TiO 2 onto the CS matrix improves all the above properties in a dose-dependent manner. Nonetheless, the CS-TiO 2 composite exhibits great potential applications including antimicrobial activity against bacteria and fungi; UV-barrier properties when it is used for packaging and textile purposes; environmental applications for removal of heavy metal ions and degradation of diverse water pollutants; biomedical applications as a wound-healing material, drug delivery system, or by the development of biosensors. Furthermore, no cytotoxic effects of CS-TiO 2 have been reported on different cell lines, which supports their use for food and biomedical applications. Moreover, CS-TiO 2 has also been used as an anti-corrosive material. However, the development of suitable protocols for CS-TiO 2 composite preparation is mandatory for industrial-scale implementation.Materials 2020, 13, 811 2 of 27 they are synthesized by different methods (intercalation of the polymer, sol-gel, hydrothermal, electro-deposition, chemical and physical vapor deposition, suspension and liquid phase deposition). These methods are effective to enhance the technological and mechanical properties of each individual component and also reveal new functionalities [1,3]. Currently, there is a special interest in combining natural polymers such as chitosan (CS) with inorganic materials like titanium dioxide (TiO 2 ) to obtain hybrid composites (CS-TiO 2 ) with beneficial properties [3][4][5][6].Chitosan (CS) is a natural biopolymer (linear polysaccharide comprising 1-4 linked 2-amino-deoxy-β-D-glucan) generally obtained by deacetylation of chitin, the main structural component of crustacean exoskeletons. CS exhibits a poly-cationic character and is non-toxic and biodegradable [7]. CS is considered a biological functional compound with multiple interesting properties. It can form films for food and pharmaceutical applications, including edible coatings, packaging material, or as drug-eluting carrier [5,7]. Its adsorbent capacity can have environmental applications during photocatalytic processes of waste-water treatment [8], and it also has inherent antibacterial and antifungal properties [9]. It is biocompatible with several organic and inorganic compounds by the presence of free amino and hydroxyl functional groups in its structure, which can react with other functional groups by electrostatic forces, hydrogen bonds, or by compound-soak up into the polymeric matrix, thus improving its mechanical and biological properties [10]...

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Section: Environmental Applicationsmentioning

confidence: 99%

Chitosan-TiO2: A Versatile Hybrid Composite

et al. 2020

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“…27,28 Taking advantage of the high specific surface area of nanostructures, TiO 2 and other metal oxides have been utilized to enhance dye degradation adsorption purpose. 29,30 For example, Zhou et al 31 successfully prepared a nanoTiO 2 /chitosan/poly(N-isopropylacrylamide) (nano-TiO 2 / CS/PNIPAAm) composite hydrogel. The hydrogel exhibited high efficiency of photocatalytic degradation for Alexa fluor (AF) dyes and removal efficiency of AF dye reached 90.5% under UV irradiation for 160 min.…”

Section: Introductionmentioning

confidence: 99%

Development of a Novel Mixed Titanium, Silver Oxide Polyacrylonitrile Nanofiber as a Superior Adsorbent and its Application for MB Removal in Wastewater Treatment

Xu¹,

Wei²,

Jin³

et al. 2017

J. Braz. Chem. Soc.

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In this study, a novel electrospun nanofibrous composite was synthesized from polyacrylonitrile (PAN) and well-dispersed oxide nanoparticles containing Ti and Ag (PAN-TA). The nanoparticles incorporated into the nanofibers can endow the composite with photocatalytic and antimicrobial ability. The morphologies and structure of the nanofibers were characterized by Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Controlled experiments were carried out with the effects of chemical modification, solution pH, temperature, dosage, contact time, and initial concentration of the dye. The methylene blue (MB) dye was completely removed within 20 min at room temperature 25 o C with high maximum retention capacity of 155.4 mg g -1 . Moreover, equilibrium data and kinetics data indicated that the dye adsorption agreed well with the Langmuir isotherm model and pseudo-second order model, respectively. In addition, the nanofibers could be easily separated from dye solution and showed high reusability for numerous repeat cycles, thus indicating good application prospects for the wastewater treatment.

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“…Therefore, BC‐Cu/Si‐NH 2 is compared with the reported adsorbents for better understanding the commercial usages and research needs. Through comparison of the adsorption capacity of different adsorbents (industrial waste lead–zinc mine tailings, chitosan–montmorillonite composite, nano‐TiO 2 /chitosan/poly( N ‐isopropylacrylamide) composite hydrogel) for AF. It can be noted in Table that, in some cases, the adsorption capacity of AF dyes on BC‐Cu/Si‐NH 2 is better than others, which can be concluded that BC‐Cu/Si‐NH 2 have potential to be used in the disposal of wastewater polluted by dyes.…”

Section: Resultsmentioning

confidence: 99%

Bamboo charcoal modified with Cu²⁺ and 3‐aminopropyl trimethoxy silane for the adsorption of acid fuchsin dye: Optimization by response surface methodology and the adsorption mechanism

Zhang

Peng

2019

J of Applied Polymer Sci

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The bamboo charcoal modified with Cu2+ and 3‐aminopropyl trimethoxy silane (BC‐Cu/Si‐NH2) was synthesized and characterized by X‐ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, and surface acid–base potentiometric titration. The adsorption for acid fuchsin (AF) dyes onto BC‐Cu/Si‐NH2 was investigated. Moreover, response surface methodology was performed to optimize the process parameters including pH, initial dye concentration, adsorbent dosage, and temperature. The results presented that the adsorption process was mainly influenced by initial AF concentration and adsorbent dosage. Isotherm studies revealed that the adsorption data fitted well with the Sips model and Dubinin–Radushkevich (D–R) model, which indicated the monolayer, homogeneous, and physical nature of the adsorption process. The maximum adsorption capacity calculated from D–R model could approach approximately to 14.91 mg g−1 at 40 °C, and the maximum adsorption capacity of Sips reached to 10.77 mg g−1 at 40 °C. The kinetic experimental data matched well with Spahn and Schlunder model as well as pseudo‐second‐order model. In addition, intraparticle diffusion was not the only rate‐controlling step of adsorption process. Thermodynamic parameters revealed the feasibility, spontaneity, and endothermic nature of adsorption. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47728.

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Preparation and characterization of nano-TiO2/chitosan/poly(N-isopropylacrylamide) composite hydrogel and its application for removal of ionic dyes

Cited by 78 publications

References 29 publications

Chitosan-TiO2: A Versatile Hybrid Composite

Chitosan-TiO2: A Versatile Hybrid Composite

Development of a Novel Mixed Titanium, Silver Oxide Polyacrylonitrile Nanofiber as a Superior Adsorbent and its Application for MB Removal in Wastewater Treatment

Bamboo charcoal modified with Cu²⁺ and 3‐aminopropyl trimethoxy silane for the adsorption of acid fuchsin dye: Optimization by response surface methodology and the adsorption mechanism

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Preparation and characterization of nano-TiO2/chitosan/poly(N-isopropylacrylamide) composite hydrogel and its application for removal of ionic dyes

Cited by 78 publications

References 29 publications

Chitosan-TiO2: A Versatile Hybrid Composite

Chitosan-TiO2: A Versatile Hybrid Composite

Development of a Novel Mixed Titanium, Silver Oxide Polyacrylonitrile Nanofiber as a Superior Adsorbent and its Application for MB Removal in Wastewater Treatment

Bamboo charcoal modified with Cu2+ and 3‐aminopropyl trimethoxy silane for the adsorption of acid fuchsin dye: Optimization by response surface methodology and the adsorption mechanism

Contact Info

Product

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Bamboo charcoal modified with Cu²⁺ and 3‐aminopropyl trimethoxy silane for the adsorption of acid fuchsin dye: Optimization by response surface methodology and the adsorption mechanism