Copper–copper oxide coated nanofibrillar cellulose: a promising biomaterial

Barua, Shaswat; Das, Gautam; Aidew, Lipika; Buragohain, Alak Kumar; Karak, Niranjan

doi:10.1039/c3ra42209g

Cited by 61 publications

(44 citation statements)

References 41 publications

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“…The carboxylic acid-rich exterior surface of the rod-like wild-type tobacco mosaic virus demonstrated an ability to readily bind divalent copper cations, but displayed only a low affinity for solid Cu clusters resulting in sparse nanoparticle coverage. 12 Moreover, nanofibrillar cellulose manifested only minimal coverage of 3-13 nm diameter Cu-CuO nanoparticles, 33 whereas tunicate cellulose formed a relatively narrow distribution of 5 nm diameter Cu nanoparticles but agglomeration occurred along the fiber surface. 13 It is also notable that, unlike k-DNA 16 or flagella functionalized with histidine peptide loops, 18 the nanoparticles on the E3 phage remained discrete rather than forming a continuous nanocrystalline layer even at high CuCl 2 concentrations.…”

Section: Resultsmentioning

confidence: 99%

Mineralization and optical characterization of copper oxide nanoparticles using a high aspect ratio bio-template

Zaman

Haberer

2014

Journal of Applied Physics

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Organized chains of copper oxide nanoparticles were synthesized, without palladium (Pd) activation, using the M13 filamentous virus as a biological template. The interaction of Cu precursor ions with the negatively charged viral coat proteins were studied with Fourier transform infrared spectroscopy, transmission electron microscopy, and energy dispersive x-ray spectroscopy. Discrete nanoparticles with an average diameter of 4.5 nm and narrow size distribution were closely spaced along the length of the high aspect ratio templates. The synthesized material was identified as a mixture of cubic Cu2O and monoclinic CuO. UV/Vis absorption measurements were completed and a direct optical band gap of 2.87 eV was determined using Tauc's method. This value was slightly larger than bulk, signaling quantum confinement effects within the templated materials.

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Section: Resultsmentioning

confidence: 99%

Mineralization and optical characterization of copper oxide nanoparticles using a high aspect ratio bio-template

Zaman

Haberer

2014

Journal of Applied Physics

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“…In the last 5 years, several approaches have been successfully developed to incorporate metal particles into nanocellulose materials for antibacterial activity, such as the physical blending of NPs with cellulose and in situ sol–gel formation of metal particles within cellulose materials . For example, silver particles have been used as potential agents with a broad antibacterial activity and low presumed toxicity to coat cellulosic materials for biomedical applications.…”

Section: Advanced Nanocellulose Materials For Biomedical Applicationsmentioning

confidence: 99%

“…Although metal NPs have been associated with remarkable antibacterial properties, safer and greener approaches using the reduction of metal slats are still limited in the literature. Recently, researchers have reported different preparations of metal‐coated cellulose materials without using toxic chemical reductants such as NaBH 4 as a reducing agent for the metal salts . For instance, Barua et al .…”

Section: Advanced Nanocellulose Materials For Biomedical Applicationsmentioning

confidence: 99%

Recent advances in nanocellulose for biomedical applications

Jorfi

Foster

2014

J of Applied Polymer Sci

654

368

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Nanocellulose materials have undergone rapid development in recent years as promising biomedical materials because of their excellent physical and biological properties, in particular their biocompatibility, biodegradability, and low cytotoxicity. Recently, a significant amount of research has been directed toward the fabrication of advanced cellulose nanofibers with different morphologies and functional properties. These nanocellulose fibers are widely applied in medical implants, tissue engineering, drug delivery, wound-healing, cardiovascular applications, and other medical applications. In this review, we reflect on recent advancements in the design and fabrication of advanced nanocellulose-based biomaterials (cellulose nanocrystals, bacterial nanocellulose, and cellulose nanofibrils) that are promising for biomedical applications and discuss material requirements for each application, along with the challenges that the materials might face. Finally, we give an overview on future directions of nanocellulose-based materials in the biomedical field.

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“…These hybrid materials can be obtained by combining a wide range of cellulosic structures (whole fibers, micro-and nanofibers and nanocrystals), and nanostructured materials (noble metals, transition metal oxides, semiconductors, etc. ; Barua et al 2013;Galland et al 2013;Katepetch et al 2013). Applications of these materials range from energy storage, catalytic beds for pollutant capture and degradation, new membranes, smart textiles, antimicrobial elements, screens for electronic applications and magnetic products (Perelshtein et al 2009;Xue et al 2012;Chacón-Patiño et al 2013;Galland et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Controlled synthesis of ZnO particles on the surface of natural cellulosic fibers: effect of concentration, heating and sonication

et al. 2015

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We report on the use of fique natural fibers as solid matrices for the deposition of zinc oxide (ZnO). Fique fibers, native to Colombia, are composed of cellulose (63-70 %) and have a heterogeneous surface morphology with high oxygen density that facilitates metal oxide nanoparticle growth and stabilization. Fique fiber-ZnO biocomposites were synthesized by a co-precipitation method using ZnSO 4 as precursor, NaOH for hydroxide formation and thermal/ ultrasound energy to promote Zn(OH) 2 /Zn(OH) 4 2-decomposition and ZnO formation. The biocomposite was characterized using X-ray diffraction, X-ray fluorescence, Fourier transform infrared spectroscopy with attenuated total reflectance, field emission scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The synthesis of ZnO nanoparticles has been widely reported on inorganic substrates and soft natural fibers; however studies on how experimental parameters affect ZnO features on heterogeneous phase reactions are scarce, as well as the use of hard complex cellulosic fibers as solid supports for its growth. We observed that [OH -]/[Zn 2? ] ratios, heating or sonication time wield a strong influence on the amount, shape, size and distribution of ZnO crystals on the fique fibers; hence confirming the potential of hard natural fibers as surface active materials for novel biocomposites synthesis. We believe these materials, where the hard fiber robustness and the transition metal oxide catalytic properties are synergistically combined, could be promising functional alternatives that will favor a widespread nanoparticle usage for environmental applications such as wastewater treatment processes.

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Copper–copper oxide coated nanofibrillar cellulose: a promising biomaterial

Cited by 61 publications

References 41 publications

Mineralization and optical characterization of copper oxide nanoparticles using a high aspect ratio bio-template

Mineralization and optical characterization of copper oxide nanoparticles using a high aspect ratio bio-template

Recent advances in nanocellulose for biomedical applications

Controlled synthesis of ZnO particles on the surface of natural cellulosic fibers: effect of concentration, heating and sonication

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