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Wyk, J.P.H. van; Mohulatsi, M.

doi:10.1023/a:1023883428359

Cited by 15 publications

(15 citation statements)

References 10 publications

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“…A CP contact time of 2 ms has been shown to minimize errors in cellulose crystallinity analysis. 49 A Hahn-echo τ r −π−τ r sequence of 2 rotor periods total duration was applied to 13 C after CP to circumvent receiver dead time. Samples were treated and packed into 4 mm (outside diameter, o.d.)…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Effect of Ball-Milling Pretreatment of Cellulose on Its Photoreforming for H₂ Production

Lan

Chen

Lee

et al. 2022

ACS Sustainable Chem. Eng.

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Photoreforming of cellulose is a promising route for sustainable H 2 production. Herein, ball-milling (BM, with varied treatment times of 0.5–24 h) was employed to pretreat microcrystalline cellulose (MCC) to improve its activity in photoreforming over a Pt/TiO 2 catalyst. It was found that BM treatment reduced the particle size, crystallinity index ( CrI ), and degree of polymerization ( DP ) of MCC significantly, as well as produced amorphous celluloses (with >2 h treatment time). Amorphous cellulose water-induced recrystallization to cellulose II (as evidenced by X-ray diffraction (XRD) and solid-state NMR analysis) was observed in aqueous media. Findings of the work showed that the BM treatment was a simple and effective pretreatment strategy to improve photoreforming of MCC for H 2 production, mainly due to the decreased particle size and, specifically in aqueous media, the formation of the cellulose II phase from the recrystallization of amorphous cellulose, the extent of which correlates well with the activity in photoreforming.

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Section: ■ Experimental Sectionmentioning

confidence: 99%

Effect of Ball-Milling Pretreatment of Cellulose on Its Photoreforming for H₂ Production

Lan

Chen

Lee

et al. 2022

ACS Sustainable Chem. Eng.

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“…Cellulose is an important biopolymer and has received attention as a renewable, nontoxic, inexpensive, and biodegradable plant-derived material. − Micro- and nanocrystalline cellulose exhibits unique properties such as high surface area, availability of a large number of unsaturated hanging bonds on their surfaces, and tenability which make it an appropriate candidate for a wide range of applications such as biomedical products, nanocomposite materials, textiles, heterogeneous surfaces, and so on . In this regard, synthesis, fabrication, and tuning of a cellulose polymer matrix as biobased supports find widespread applications in heterogeneous catalysis. − On the other hand, dealing with waste materials from fruits and vegetables is becoming an important area of research from the sustainable development point of view. − These plant-based cellulose-rich wastes can be a potential source of a nanomatric natural fiber matrix. , Only a few reports are available on designing nanoscale heterogeneous catalysts using naturally waste cellulose. − However, the fabrication of natural cellulose with small and high cell densities remains a scientific and technological challenge.…”

Section: Introductionmentioning

confidence: 99%

Pd Nanoparticles-Loaded Honeycomb-Structured Bio-nanocellulose as a Heterogeneous Catalyst for Heteroaryl Cross-Coupling Reaction

Dewan

Sarmah

Bharali

et al. 2021

ACS Sustainable Chem. Eng.

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Distorted honeycomb-like hollow cage-structured bio-nanocellulose (with 1–16.7 μm diameters) is derived from cellulosic waste of pomegranate peel using a simple microwave technique in water under neutral conditions without using external chemicals in a very short period of time. Pd nanoparticles are loaded onto the bio-nanocellulose surface by simple stirring at room temperature (25 °C) and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, Brunauer–Emmett–Teller surface area analyses, and so on. The newly developed nanocomposite material has been utilized as an efficient heterogeneous catalyst for the synthesis of potential bioactive biaryl/heterobiaryl and alkynyl/heteroalkynyl derivatives up to 98% yield via the Suzuki–Miyaura and Sonogashira cross-coupling reactions. The catalyst is reusable up to five catalytic cycles without significant loss of its catalytic activity.

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“…It is known that cellulose is degraded by various cellulases including cellulase of white-rot fungi, Trichoderma reesei and Trichoderma viride. [7,8] For the plastic coated papers, these enzymes preferentially degraded cellulose at the points of uncoated fibers. However, these cellulases did not degrade PLA, PCL, PHB and PBS plastic powder.…”

Section: Resultsmentioning

confidence: 99%

A New Method for the Evaluation of Biodegradable Plastic Using Coated Cellulose Paper

Lim

Raku

Tokiwa

2004

Macromolecular Bioscience

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A highly sensitive analytical method for evaluation of poly(L-lactide) (PLA), poly(epsilon-caprolactone) (PCL), poly(beta-hydroxybutyrate) (PHB), and poly(butylene succinate) (PBS) degradability was developed using coated cellulose paper, prepared by penetration and adhesion of these plastics into/onto the cellulose paper. Enzymatic degradability of the obtained plastic coated papers was evaluated using various commercial proteases and lipases. PLA coated paper was highly susceptible to subtilisin and mammalian enzymes, alpha-chymotrypsin, elastase and trypsin. To our knowledge, this is the first report on the degradation of PLA coated paper using subtilisin and mammalian enzymes. Almost all lipase preparations degraded PCL and PHB coated papers but not PBS coated paper. The biodegradability of plastic coated paper was greater than that of plastic powder. The penetration of plastic into cellulose paper by coating improved the plastic degradability, and can be regulated easily.

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Untitled

Cited by 15 publications

References 10 publications

Effect of Ball-Milling Pretreatment of Cellulose on Its Photoreforming for H₂ Production

Effect of Ball-Milling Pretreatment of Cellulose on Its Photoreforming for H₂ Production

Pd Nanoparticles-Loaded Honeycomb-Structured Bio-nanocellulose as a Heterogeneous Catalyst for Heteroaryl Cross-Coupling Reaction

A New Method for the Evaluation of Biodegradable Plastic Using Coated Cellulose Paper

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Untitled

Cited by 15 publications

References 10 publications

Effect of Ball-Milling Pretreatment of Cellulose on Its Photoreforming for H2 Production

Effect of Ball-Milling Pretreatment of Cellulose on Its Photoreforming for H2 Production

Pd Nanoparticles-Loaded Honeycomb-Structured Bio-nanocellulose as a Heterogeneous Catalyst for Heteroaryl Cross-Coupling Reaction

A New Method for the Evaluation of Biodegradable Plastic Using Coated Cellulose Paper

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Product

Resources

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Effect of Ball-Milling Pretreatment of Cellulose on Its Photoreforming for H₂ Production

Effect of Ball-Milling Pretreatment of Cellulose on Its Photoreforming for H₂ Production