Facile construction of cellulose nanocomposite aerogel containing TiO2 nanoparticles with high content and small size and their applications

Wang, Qiyang; Wang, Yixiang; Chen, Lingyun; Cai, Jie; Zhang, Lina

doi:10.1007/s10570-017-1262-5

Cited by 37 publications

(13 citation statements)

References 56 publications

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“…Moreover, the crystallite diameter (Dc) of CeO 2 samples in and outside the RC film were calculated by using the Scherer equation shown in Equation (2) [27]:D(hkl)=normalkλ/βCOSθ, where k is a constant (0.94), λ is the wavelength of Cu K α radiation ( λ = 0.15406 nm), β is the full-width half-maximum of respective diffraction peak, and 2 θ is the peak angle in radians.…”

Section: Methodsmentioning

confidence: 99%

Use of CeO2 Nanoparticles to Enhance UV-Shielding of Transparent Regenerated Cellulose Films

et al. 2019

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The major challenge in preparing polymer nanocomposites is to prevent the agglomeration of inorganic nanoparticles (NPs). Here, with regenerated cellulose (RC) films as supporting medium, UV-shielding and transparent nanocomposite films with hydrophobicity were fabricated by in situ synthesis of CeO2 NPs. Facilitated through the interaction between organic and inorganic components revealed by X-ray diffraction (XRD) and Fourier transformation infrared spectroscopy (FTIR) characterization, it was found that CeO2 NPs were uniformly dispersed in and immobilized by a cellulose matrix. However some agglomeration of CeO2 NPs occurred at higher precursor concentrations. These results suggest that the morphology and particle size of CeO2 and the corresponding performance of the resulting films are affected by the porous RC films and the concentrations of Ce(NO3)3·6H2O solutions. The optimized nanocomposite film containing 2.95 wt% CeO2 NPs had more than 75% light transmittance (550 nm), high UV shielding properties, and a certain hydrophobicity.

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Section: Methodsmentioning

confidence: 99%

Use of CeO2 Nanoparticles to Enhance UV-Shielding of Transparent Regenerated Cellulose Films

et al. 2019

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“…The environmentally friendly low-cost solvent system of alkali/Urea aqueous solution for dissolving cellulose has been discovered in our laboratory; subsequently, cellulose hydrogel, − aerogel, − and fibers − are obtained by this method. Theoretically, cellulose-based membranes have the potential of excellent breathability because cellulose chains contain a large number of hydroxy groups.…”

Section: Introductionmentioning

confidence: 99%

Cross-Linked Cellulose Membranes with Robust Mechanical Property, Self-Adaptive Breathability, and Excellent Biocompatibility

Shi

Zhu

Chen

et al. 2019

ACS Sustainable Chem. Eng.

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High-performance breathable bio-based membranes have attracted considerable attention worldwide due to the limited fossil energy resources and the demand for sustainable development.As the most abundant polysaccharide, cellulose is an almost inexhaustible raw material with hydrophilicity, biocompatibility, biodegradability, chemical modifying capacity, etc. that has demonstrated versatile applications. Herein, cellulose membranes (CEMs) with mechanically strong property, self-adaptive breathability, and excellent biocompatibility were fabricated by a green technology. The obtained CEMs exhibited an increased integrated mechanical property with the broken strength and broken elongation improved from 54.2 to 137.4 MPa and from 4.7 to 18.3%, respectively. Moreover, the obtained cellulose membranes exhibited a self-adaptive breathability with varying temperature and relative humidity (RH), and the water vapor transmission rate (WVTR) of CEMs was much better than that of some famous commercial products, such as 3M-Nexcare. Besides that, cytotoxicity testing results revealed that CEMs were noncytotoxic, with cell viability reaching up to 97%, showing an excellent biocompatibility. Simultaneously, compared to the pristine cellulose membrane, the transmittance and water repellency of cross-linked membranes have been improved to some degree. It is believed that the achieved membranes are effective and scalable products for meritorious applications in medical bandages, wound healing, smart apparels, building materials, and so forth.

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“…6) that the degradation efficiency of MB and MO increased in the order, 0.1 Ce-Ti/Cf ˂ 0.3 Ce-Ti/Cf ˂0.5 Ce-Ti/Cf, the 0.5 Ce-Ti/Cf nanocomposite materials and showed highly efficient photocatalytic activity under sunlight irradiation, as a result of the nano-scale effect ofTiO2 anatase nanoparticles. A further increase in the amount of TiO2 induced an increase in the photocatalytic MB and MO degradation (Wang et al 2017).…”

Section: The Effectof Ph Of Mo and Mb Solutions On Photocatalytic Degradationmentioning

confidence: 97%

Fabrication of Cerium Titanate Cellulose Fiber Nanocomposite Materials for the Removal of Methyl Orange and Methylene Blue from Polluted Water by Photocatalytic Degradation

Kotp

2022

Preprint

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Green synthesis is anenvironmentally responsible, simple, and emerging approach to nanoparticle synthesis (NPs) and currently attracts researchersworldwide. In this study, a novel (cerium titanate (Ce-Ti) and cellulose fiber (Cf) nanocomposite photocatalyst) was successfully fabricated using a crosslinking reaction between cellulose fiber (Cf) and a different molar ratio of cerium titanate (Ce-Ti) nanoparticles. The Cf and Ce-Ti NPs were prepared from sunflower seed husk and its extract, respectively, through a green biosynthesis approach.Using Fourier Transform Infra-Red (FT-IR) spectroscopy, X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM-EDX), all fabricated nanocomposites were characterized. Results obtained from the FT-IR and EDX analyses indicated that Cf, and its composites (0.1 Ce-Ti/Cf, 0.3 Ce-Ti/Cf, and 0.5 Ce-Ti/Cf) were prepared successfully using harnessing the biomass filtrate of sunflower seed husk.Furthermore, XRD revealed that/ the degree of crystallinity of the nanocomposites increased with the increasing molar ratios of the Ce-Ti NPs. Additionally,the photocatalytic activity of 0.1 Ce-Ti/Cf, 0.3 Ce-Ti/Cf, and 0.5 Ce-Ti/Cf nanocomposite samples in the presence and absence of hydrogen peroxide were accomplished for methylene blue (MB) and methyl orange(MO) dyes. In addition, high photodegradation efficiency was obtained by increasing the ratio of TiO2 in Ce-Ti in the nanocomposite formula; the % degradation of methylene blue dye (MB) and methyl orange (MO) using 0.5 Ce-Ti/Cf nanocomposite photocatalyst in the absence of hydrogen peroxide was 95.4 and 92.7% after 300 min, respectively. Nevertheless, with hydrogen peroxide, the % degradation was 98.9% and 94% after 120 min, respectively, after sunlight irradiation. Therefore, 0.1 Ce-Ti/Cf, 0.3 Ce-Ti/Cf, and 0.5 Ce-Ti/Cf nanocomposite photocatalyst can be viewed as a promising material for dye wastewater treatment because of its good photocatalytic activity. Moreover, the fabricated nanocomposite photocatalyst acts as a promising applicant in treating wastewater collected from Egypt.

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Facile construction of cellulose nanocomposite aerogel containing TiO2 nanoparticles with high content and small size and their applications

Cited by 37 publications

References 56 publications

Use of CeO2 Nanoparticles to Enhance UV-Shielding of Transparent Regenerated Cellulose Films

Use of CeO2 Nanoparticles to Enhance UV-Shielding of Transparent Regenerated Cellulose Films

Cross-Linked Cellulose Membranes with Robust Mechanical Property, Self-Adaptive Breathability, and Excellent Biocompatibility

Fabrication of Cerium Titanate Cellulose Fiber Nanocomposite Materials for the Removal of Methyl Orange and Methylene Blue from Polluted Water by Photocatalytic Degradation

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