Preparation of Cellulose/Silver Composite Particles Having a Recyclable Catalytic Property

Fujii, Yuki; Imagawa, Kaori; Omura, Taro; Suzuki, Toyoko; Minami, Hideto

doi:10.1021/acsomega.9b03634

Cited by 27 publications

(22 citation statements)

References 51 publications

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“…Cellulose particles were prepared by a SRM under the conditions described in previous reports, 26,28 and were subsequently functionalized with primary amino groups as described in Akhlaghi et al 31 The particles before and after the amination reaction were spherical and filled with the surrounding media (Figure 1(a), (e)). During vacuum drying, the particles shrank under the capillary pressure exerted by evaporating media (Figure 1(b), (f)).…”

Section: Results and Disccusionmentioning

confidence: 99%

“…Cellulose particles were prepared by SRM as described in our previous reports 26,28 . Microcrystalline cellulose was dissolved in [Bmim]Cl at a weight ratio of 14:86 by heating at 100 °C for 7 h (complete dissolution was confirmed by observation under a polarized optical microscope).…”

Section: Methodsmentioning

confidence: 99%

“…In addition, the porous structure can accept carboxylate groups as scaffolds for the reduction of silver cations. In this way, silver nanoparticles (AgNPs) were synthesized on the porous structure 28 . The composite cellulose/Ag particles exhibited high catalytic ability and can be reused at least three times.…”

Section: Introductionmentioning

confidence: 99%

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In situ preparation of inorganic nanoparticles in amino‐functionalized porous cellulose particles

Omura

Fujii

Suzuki

et al. 2020

J of Applied Polymer Sci

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Amino‐functionalized cellulose particles with a porous structure were prepared by a solvent‐releasing method with 1‐butyl‐3‐methylimdazolium chloride ([Bmim]Cl) followed by an amination reaction, and were incorporated with silica. The amino groups provided the base catalyst for the formation of silica on the porous structure during the in situ sol–gel reaction of tetraethyl orthosilicate. After the reaction, no free silica remained in the reaction medium. The microscopic morphologies (specific surface area, pore diameter, and pore volume) of the composite particles were affected by the silica content in the composites, which was controllable by the sol–gel reaction time. When silver nanoparticles were introduced to the pores of the cellulose particles by reduction of AgNO3 with amino groups, the composite exhibited catalytic ability and recyclability.

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Section: Results and Disccusionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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In situ preparation of inorganic nanoparticles in amino‐functionalized porous cellulose particles

Omura

Fujii

Suzuki

et al. 2020

J of Applied Polymer Sci

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“…Silver-carboxylated nanocellulose was prepared from bagasse waste in treatment with ammonium persulfate using a facile and green photochemical approach (Caschera et al, 2020 ). In another study, the porous cellulose particles with solvent-releasing method, exhibiting high catalytic ability, were prepared and evaluated (Fujii et al, 2020 ). Garza-Cervantes and his co-workers synthesized a novel silver-containing biocomposite using green methodology (Garza-Cervantes et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Permeation of Silver Sulfadiazine Into TEMPO-Oxidized Bacterial Cellulose as an Antibacterial Agent

Khattak

Qin

Wahid

et al. 2021

Front. Bioeng. Biotechnol.

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Surface oxidation of bacterial cellulose (BC) was done with the TEMPO-mediated oxidation mechanism system. After that, TEMPO-oxidized bacterial cellulose (TOBC) was impregnated with silver sulfadiazine (AgSD) to prepare nanocomposite membranes. Fourier transform infrared spectroscopy (FTIR) was carried out to determine the existence of aldehyde groups on BC nanofibers and X-ray diffraction (XRD) demonstrated the degree of crystallinity. FESEM analysis revealed the impregnation of AgSD nanoparticles at TOBC nanocomposites with the average diameter size ranging from 11 nm to 17.5 nm. The sample OBCS3 showed higher antibacterial activity against Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli by the disc diffusion method. The results showed AgSD content, dependent antibacterial activity against all tested bacteria, and degree of crystallinity increases with TOBC and AgSD. The main advantage of the applications of TEMPO-mediated oxidation to BC nanofibers is that the crystallinity of BC nanofibers is unchanged and increased after the oxidation. Also enhanced the reactivity of BC as it is one of the most promising method for cellulose fabrication and functionalization. We believe that the novel composite membrane could be a potential candidate for biomedical applications like wound dressing, BC scaffold, and tissue engineering.

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“…Cellulose is the most abundant renewable natural polymer in nature 13 . Due to its low cost, biodegradability and environmental friendliness, 14 it has unique advantages in sustainable development of resources, energy, and environmental protection 15 .…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of cellulose carbamate membrane with high strength and transparency

Zhang

et al. 2020

J of Applied Polymer Sci

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In this study, cellulose carbamate was synthesized from alkali cellulose and urea by a low‐cost solid–liquid phase method. Cellulose carbamate was dissolved in cuprammonium solution to form a regenerated cellulose membrane with high strength and high transparency. The mass fraction of cellulose dissolved was greatly increased (up to 17%), and the thermal stability of cellulose was retained. The surface of the membrane is compact and there are regular microchannels in it. The factors influencing the transparency and mechanical properties of regenerated cellulose membrane were discussed by the range analysis of orthogonal experiment. The light transmittance is 95.50%, the breaking strength is 98.35 MPa, the elongation at break is 21.74%. The ability of heat preservation and moisture preservation of regenerated cellulose membrane was tested, and the effect was close to that of conventional polyethylene membrane. The membrane material has broad application prospects in packaging, food preservation, agriculture, and other fields.

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Preparation of Cellulose/Silver Composite Particles Having a Recyclable Catalytic Property

Cited by 27 publications

References 51 publications

In situ preparation of inorganic nanoparticles in amino‐functionalized porous cellulose particles

In situ preparation of inorganic nanoparticles in amino‐functionalized porous cellulose particles

Permeation of Silver Sulfadiazine Into TEMPO-Oxidized Bacterial Cellulose as an Antibacterial Agent

Preparation and characterization of cellulose carbamate membrane with high strength and transparency

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