Processing cellulose@Fe3O4 into mechanical, magnetic and biodegradable synapse-like material

Zhang, Yang; Li, Jingyu; Ma, Na; Meng, Zhichao; Sui, Guoxin

doi:10.1016/j.compositesb.2019.107432

Cited by 22 publications

(8 citation statements)

References 38 publications

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“…It is somewhat surprising that despite the absence of evidence for a chemical reaction, IONPs are retained within the CNF structure remarkably well. This suggests that, in addition to Van der Waals interactions between CNFs and IONPs, other factors may be contributing to the stability of IONPs within the aerogel such as mechanical interlocking [54]. It also suggests that the attraction forces between CNFs and IONPs are stronger than those between the IONPs.…”

Section: Characterization Of the Adsorbentmentioning

confidence: 99%

Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water

et al. 2021

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The application and optimal operation of nanoparticle adsorbents in fixed-bed columns or industrial-scale water treatment applications are limited. This limitation is generally due to the tendency of nanoparticles to aggregate, the use of non-sustainable and inefficient polymeric resins as supporting materials in fixed-bed columns, or low adsorption capacity. In this study, magnesium-doped amorphous iron oxide nanoparticles (IONPs) were synthesized and immobilized on the surface of cellulose nanofibrils (CNFs) within a lightweight porous aerogel for arsenic removal from water. The IONPs had a specific surface area of 165 m2 g−1. The IONP-containing CNF aerogels were stable in water and under constant agitation due to the induced crosslinking using an epichlorohydrin crosslinker. The adsorption kinetics showed that both As(III) and As(V) adsorption followed a pseudo second-order kinetic model, and the equilibrium adsorption isotherm was best fitted using the Langmuir model. The maximum adsorption capacities of CNF-IONP aerogel for As(III) and As(V) were 48 and 91 mg As g-IONP−1, respectively. The optimum IONP concentration in the aerogel was 12.5 wt.%, which resulted in a maximum arsenic removal, minimal mass loss, and negligible leaching of iron into water.

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Section: Characterization Of the Adsorbentmentioning

confidence: 99%

Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water

et al. 2021

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“…The MCC@Fe 3 O 4 composite was fabricated according to the previous study (mass fraction of Fe 3 O 4 is 10 wt%). [ 28 ] The MCC@Fe 3 O 4 /lignin‐Ca 2+ hydrogel was synthesized via a crosslinking reaction. [ 29 ] Typically, the hemicelluloses were removed from corn straw (1.25 g) via hydrothermal pretreatment (Table S1, Supporting Information), [ 18 ] followed by immersing into (3.5 g) NaOH solution (45 mL) at 80 °C for getting uniform and brown solution by removing residues.…”

Section: Methodsmentioning

confidence: 99%

Durable Photoetching Magnetic Biomass‐Based Hydrogel with High Performance

Zhang

et al. 2021

Adv Materials Inter

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Benefiting from the economic raw materials and efficient f abrication process, it is easy to directly scale up the hydrogels for biomedical scaffolds, functional materials, and storage systems. However, it remains challenging to construct stable hydrogel combining photoetching technology with low‐cost, room‐temperature, and low‐pressure fabrication. Here, a novel photoetching microcrystalline cellulose (M C C) @ Fe3O4/lignin‐Ca2+ hydrogel with excellent compressive strength (up to 300 kPa) is reported and its elasticity is well maintained under the temperature (−25–100 °C). Interestingly, the magnetic hydrogel exhibits controllable photoetching patterns based on the photothermal effect of Fe3O4 nanoparticles under near‐infrared irradiation (808 nm), especially in the different circumstances including enclosed space and underwater condition. In addition, the magnetic hydrogel displays the outstanding fire resistance and UV absorption (100%). The photoetching magnetic cellulose‐based hydrogel has great potential toward environmental‐friendly devices and applications in optics, electronics, sensors, and other miniature devices.

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“…Sui and co‐workers recently simulated the network of a synapse using cellulose@Fe 3 O 4 nanoparticles. [ 245 ] Capitalizing on the superparamagnetic properties of iron oxide nanoparticles that depend on electron transfer between Fe 2+ and Fe 3+ in the crystal structure, they managed to develop a magnetic synapse network with small hysteresis loops and low coercivity. Meanwhile, magnetic neurons and synapses based on alternative mechanisms have also been demonstrated.…”

Section: Memristive Materialsmentioning

confidence: 99%

Stimuli‐Responsive Memristive Materials for Artificial Synapses and Neuromorphic Computing

et al. 2021

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Neuromorphic computing holds promise for building next‐generation intelligent systems in a more energy‐efficient way than the conventional von Neumann computing architecture. Memristive hardware, which mimics biological neurons and synapses, offers high‐speed operation and low power consumption, enabling energy‐ and area‐efficient, brain‐inspired computing. Here, recent advances in memristive materials and strategies that emulate synaptic functions for neuromorphic computing are highlighted. The working principles and characteristics of biological neurons and synapses, which can be mimicked by memristive devices, are presented. Besides device structures and operation with different external stimuli such as electric, magnetic, and optical fields, how memristive materials with a rich variety of underlying physical mechanisms can allow fast, reliable, and low‐power neuromorphic applications is also discussed. Finally, device requirements are examined and a perspective on challenges in developing memristive materials for device engineering and computing science is given.

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Processing cellulose@Fe3O4 into mechanical, magnetic and biodegradable synapse-like material

Cited by 22 publications

References 38 publications

Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water

Highly Efficient Iron Oxide Nanoparticles Immobilized on Cellulose Nanofibril Aerogels for Arsenic Removal from Water

Durable Photoetching Magnetic Biomass‐Based Hydrogel with High Performance

Stimuli‐Responsive Memristive Materials for Artificial Synapses and Neuromorphic Computing

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