Synthesis of Cyclodextrin-functionalized Cellulose Nanofibril Aerogel as a Highly Effective Adsorbent for Phenol Pollutant Removal

Zhang, Fang; Wu, Weibing; Sharma, Sudhir Kumar; Tong, Guolin; Deng, Yulin

doi:10.15376/biores.10.4.7555-7568

Cited by 27 publications

(28 citation statements)

References 1 publication

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“…While the silane surface-treatment reduced crystallinity of CNCs, it did not alter the size and aspect ratio. The adsorption capacity of pristine cellulose fibers as drug carriers is quite mediocre, while surface modification to impart functional groups is commonly used to improve the adsorption performance [10]. Qing et al [29]used cationic surfactant cetyltrimethyl ammoniumbromide to modify CNCs, with the anionic sulfate groups on CNCs, targeting controlled drug release especially for hydrophobic drug delivery.…”

Section: Surface Modificationmentioning

confidence: 99%

“…The vast abundance and renewability of cellulose make it an 'almost inexhaustible' [2,3] material. It has been widely claimed by numerous researchers as the most abundant renewable biopolymer [4], natural polymer [5,6], natural organic bio material [7], biomass [8], biopolymer [9,10], natural polysaccharide [11], and renewable natural biopolymer [12]. Other prominent attributes of cellulose include multifunctionality [13], chemical stability and derivatizability [5], lightweight, high aspect ratio, excellent mechanical properties, low density, low coefficient of thermal expansion, functionalizable surface, and carbon neutrality [9].…”

Section: Introductionmentioning

confidence: 99%

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Applications of cellulose nanomaterials in pharmaceutical science and pharmacology

Cao¹

2018

Express Polym. Lett.

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Abstract. Cellulose nanomaterials (CNs) have been successfully applied to a variety of scientific areas in recent years with remarkable engineering utilities. As sustainable materials of huge abundance, CNs show significant potentials in fine-tune the microstructures and kinetics from the nano-level. This paper reviews recent key advancements of the use of CNs in the fields of pharmaceutical science and pharmacology. A broad overview of the development of CNs is provided, and the current methods to obtain the materials are discussed. The different types of processing techniques are reviewed, that are critical to the applications in pharmaceutical science and pharmacology. The key breakthroughs of applications in major fields are discussed, including oral administration, topical administration, tissue scaffolds, and antibacterial applications.

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Section: Surface Modificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Applications of cellulose nanomaterials in pharmaceutical science and pharmacology

Cao¹

2018

Express Polym. Lett.

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“…The removal of water contaminants and assessment of the removal efficacy of advanced filtration materials becomes very important as there is uncertainty regarding the extent of environmental and human health risks of many aqueous pollutants. Many analytical methods have been used for the determination of environmental and industrial contaminants in water, including UV and infrared absorption and fluorescence spectroscopy, gas and liquid chromatography, mass spectrometry, and hyphenated methods such as chromatography‐mass spectrometry . Because many of them are labor‐intensive and time‐consuming, and cannot detect contaminants in low concentration below ng L −1 (ppb) levels, new methods are required.…”

Section: Outlooks For Photothermal Characterization Of Cellulose and mentioning

confidence: 99%

Advanced Cellulosic Materials for Treatment and Detection of Industrial Contaminants in Wastewater

et al. 2016

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The scarcity of fresh, clean water is one of the most tremendous global crises currently facing the human race. Various technologies exist for the treatment of contaminated water on different waste volume scales, for specific pollutants, and at a range of cost points. The use of agricultural and industrial by‐products directly or with simple modifications for treating wastewater has been investigated thoroughly, and the new frontier in this field is the development of advanced cellulose materials which are low cost, highly efficient, and widely applicable. Concurrently, developing highly sensitive and selective methods for analyzing the remediation efficiency of these materials is important as low concentrations of industrial contaminants can cause severe health problems in humans. The focus of this review is current progress in advanced cellulose materials for treatment of industrially‐contaminated wastewater, particularly that which contains dyes, heavy metals, and petrochemicals, and the development of ultrasensitive technologies such as photothermal spectroscopy (PTS) and photoacoustic spectroscopy (PAS) for pollutant detection.

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“…CNC and cellulose based hybrid aerogels have been explored as important adsorbents for wastewater contaminants . Hybrid aerogels of cellulose nanofibers/cyclodextrin were reported as adsorbents for phenolic pollutants presenting adsorption capacity of 148 µg g −1 , removing about 80% of the compound from the media and showing recycling possibility . Adsorbents made of microcrystalline cellulose and CNC removed up to 95% of methylene blue from aqueous media .…”

Section: Introductionmentioning

confidence: 99%

Cellulose Based Cryogels as Adsorbents for Organic Pollutants

Toledo

Martins

Pirich

et al. 2019

Macromolecular Symposia

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Cryogels of hydroxypropyl methylcellulose (HPMC) and bacterial cellulose nanocrystals (CNC) were prepared with 0, 5, or 15 wt% contents of CNC. Two types of CNC were used, namely, CNC‐SO4 and CNC, with ζ‐potential values of − (46 ± 1) mV and − (5 ± 1) mV, respectively. Regardless the CNC type or content, all cryogels presented similar density, capillarity constant, contact angle, swelling rate values, and morphology. However, the addition of only 5% of CNC‐SO4 to HPMC cryogels increased the compressive modulus from (120 ± 15) kPa to (150 ± 19) kPa. The cryogels were tested as adsorbents for 17α‐ethinyl estradiol (EE) and methylene blue (MB). In the dilute range, the pollutants removal efficiency of reinforced cryogels was considerably larger than that of neat cryogels. In the more concentrated range, all adsorbents presented similar efficiency. The adsorption isotherms of EE and MB onto cryogels fitted with sigmoidal and Freundlich adsorption models, indicating higher affinity for aerogels with 5% CNC‐SO4. Cryogels could be recycled 10 and 5 times, respectively, for MB and EE adsorption/desorption under flow without losing efficiency, disclosing their potential for preconcentration of pollutants, and environmental remediation.

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Synthesis of Cyclodextrin-functionalized Cellulose Nanofibril Aerogel as a Highly Effective Adsorbent for Phenol Pollutant Removal

Cited by 27 publications

References 1 publication

Applications of cellulose nanomaterials in pharmaceutical science and pharmacology

Applications of cellulose nanomaterials in pharmaceutical science and pharmacology

Advanced Cellulosic Materials for Treatment and Detection of Industrial Contaminants in Wastewater

Cellulose Based Cryogels as Adsorbents for Organic Pollutants

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