Reagentless preparation of shape memory cellulose nanofibril aerogels decorated with Pd nanoparticles and their application in dye discoloration

Gu, Jin; Hu, Chuanshuang; Zhang, Weiwei; Dichiara, Anthony B.

doi:10.1016/j.apcatb.2018.06.002

Cited by 86 publications

(36 citation statements)

References 46 publications

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“…As a typical direct azo dye, Congo red (CR) is mainly applied in a relatively large dosage for dyeing biological samples, and can increase the risk of cancer if absorbed into the human body [4]. Currently, there are various industrial methods for treating waste dye solutions, including adsorption, microbial treatment, chemical oxidation or reduction, flocculation precipitation, ozone oxidization, chemical precipitation, nanofiltration, catalytic degradation etcetera [5][6][7]. Due to but also hydrophobic organic oil.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanofibril/Carbon Nanomaterial Hybrid Aerogels for Adsorption Removal of Cationic and Anionic Organic Dyes

Dichiara

et al. 2020

Nanomaterials

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Advances in nanoscale science and engineering are providing new opportunities to develop promising adsorbents for environmental remediation. Here, hybrid aerogels are assembled from cellulose nanofibrils (CNFs) and carbon nanomaterials to remove cationic dye methylene blue (MB) and anionic dye Congo red (CR) in single and binary systems. Two classes of carbon nanomaterials, carbon nanotubes (CNTs) and graphene nanoplates (GnPs), are incorporated into CNFs with various amounts, respectively. The adsorption, mechanics and structure properties of the hybrid aerogels are investigated and compared among different combinations. The results demonstrate CNF–GnP 3:1 hybrid exhibits the best performance among all composites. Regarding a single dye system, both dye adsorptions follow a pseudo-second-order adsorption kinetic and monolayer Langmuir adsorption isotherm. The maximal adsorption capacities of CNF–GnP aerogels for MB and CR are 1178.5 mg g−1 and 585.3 mg g−1, respectively. CNF–GnP hybrid show a superior binary dye adsorption capacity than pristine CNF or GnP. Furthermore, nearly 80% of MB or CR can be desorbed from CNF–GNP using ethanol as the desorption agent, indicating the reusability of this hybrid material. Hence, the CNF–GnP aerogels show great promise as adsorption materials for wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Cellulose Nanofibril/Carbon Nanomaterial Hybrid Aerogels for Adsorption Removal of Cationic and Anionic Organic Dyes

Dichiara

et al. 2020

Nanomaterials

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“…These characteristic reections proved that the Pd NPs in Pd 91 -GBLP NPs were a facecentered cubic (fcc) structure (JCPDS: 87-0641, space group: Fm3m (225)). This was the same as shape memory cellulose nanobril aerogels decorated with Pd NPs prepared by Jin Gu and coworkers 41 and pallet nanoparticles using Pulicaria glutinosa extract prepared by Khan and coworkers. 42 The hydrodynamic size and zeta potential of Pd n -GBLP NPs were measured using DLS technology.…”

Section: Pd N -Gblp Nps Synthesis and Characterizationmentioning

confidence: 54%

Ginkgo biloba leaf polysaccharide stabilized palladium nanoparticles with enhanced peroxidase-like property for the colorimetric detection of glucose

Cui

Lai

et al. 2020

RSC Adv.

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“…These Pd NPs displayed clear codirectionally arranged lattice fringes, demonstrating the singlecrystalline character of the Pd NP crystal ( Supplementary Fig. 8) 46 . In contrast to the characteristic peaks of DACO, the characteristic peaks of DACO-PDA@Pd NPs at 40.1°, 46.6°, 68.9°, and 82.5°c orrespond to Pd (111), Pd (200), Pd (220), Pd (311), and Pd (222), respectively, proving the production of Pd NPs.…”

Section: Resultsmentioning

confidence: 91%

Interfacial assembly of self-healing and mechanically stable hydrogels for degradation of organic dyes in water

et al. 2020

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Mussel-inspired hydrogels have gained attention for underwater applications, including treatment of wastewater. However, they are typically limited by poor mechanical properties, short-term mechanical stability and by not being reusable. Here, we develop a mechanically stable and self-healing hydrogel with high mechanical strength for the degradation of dyes in wastewater, based on cellulose-derived co-polydopamine@Pd nanoparticles. A dynamic catechol redox system was achieved by reversible conversion between semiquinone and quinone/hydroquinone radicals, endowing the hydrogel with stable mechanical properties and self-healing behavior. Furthermore, a graphene oxide membrane is covalently grafted on to the hydrogel surface, which regulates its water permeability and intercepts some metal ions or large particles, protecting the hydrogel structure. High catalytic activity for anionic and cationic dyes is achieved, with the degradation rate reaching more than 95% after multiple cycles without significant deterioration in performance or hydrogel structure. Our work demonstrates a route to achieve mechanically stable hydrogels for degradation of organic dyes in wastewater.

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Reagentless preparation of shape memory cellulose nanofibril aerogels decorated with Pd nanoparticles and their application in dye discoloration

Cited by 86 publications

References 46 publications

Cellulose Nanofibril/Carbon Nanomaterial Hybrid Aerogels for Adsorption Removal of Cationic and Anionic Organic Dyes

Cellulose Nanofibril/Carbon Nanomaterial Hybrid Aerogels for Adsorption Removal of Cationic and Anionic Organic Dyes

Ginkgo biloba leaf polysaccharide stabilized palladium nanoparticles with enhanced peroxidase-like property for the colorimetric detection of glucose

Interfacial assembly of self-healing and mechanically stable hydrogels for degradation of organic dyes in water

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