Preparation of TiO2/cellulose nanocomposites as antibacterial bio-adsorbents for effective phosphate removal from aqueous medium

Zong, Enmin; Wang, Chen; Yang, Jiayao; Zhu, Hangxuan; Jiang, Shengtao; Liu, Xiaohuan; Song, Pingan

doi:10.1016/j.ijbiomac.2021.04.007

Cited by 37 publications

(15 citation statements)

References 56 publications

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“…Although several polysaccharides such as chitosan ( Modak, Jha & Kumar, 2021 ), an acid polysaccharide from Laminaria japonica ( Yue et al., 2017 ), and polysaccharides from algae ( Harden, Falshaw, Carnachan, Kern & Prichard, 2009 ) have shown virucidal activity, cellulose-based fabric alone did not present virucidal activity ( Table 3 ). However, cellulose can strongly attach TiO 2 particles through the formation of intermolecular hydrogen bonding between the hydroxyl group of cellulose and the hydroxyl group in the TiO 2 surface ( Chai, Pang, Lim & Chong, 2021 ; Zong et al., 2021 ) even those produced using a hydrolysis-precipitation method ( Zong et al., 2021 ), and the materials exhibited antibacterial properties.…”

Section: Resultsmentioning

confidence: 99%

Hydrophobic cellulose-based and non-woven fabrics coated with mesoporous TiO2 and their virucidal properties under indoor light

Souza

Amorim

Cadamuro

et al. 2022

Carbohydrate Polymer Technologies and Applications

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Antiviral hydrophobic cellulose-based cotton or non-woven fabrics containing mesoporous TiO 2 particles were developed for potential use in healthcare and in other contaminated environments. Hydrosols made with the sol-gel method using two different amounts of the Ti precursor were applied to cotton and non-woven fabrics and their virucidal effect on Murine Coronavirus (MHV-3) and Human Adenovirus (HAdV-5) was evaluated under indoor light irradiation. The results show 90% reduction of HAdV-5 and up to 99% of MHV-3 in non-woven fabric, and 90% reduction of MHV-3 and no reduction of HAdV-5 in cotton fabric. The antiviral activity was related to the properties of the TiO 2 powders and coatings characterized by BET surface area, DRX, DLS, FTIR, DRS, SEM, TEM and water contact angle. The hydrophobic characteristic of the treated fabrics and the high surface area of the TiO 2 particles favor interaction with the virus, especially MHV-3. These results demonstrate that non-woven fabric and cotton, coated with TiO 2 , can be highly effective in preventing contamination with MHV-3 and HAdV-5 viruses, particularly for applications in healthcare indoor environments.

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Section: Resultsmentioning

confidence: 99%

Hydrophobic cellulose-based and non-woven fabrics coated with mesoporous TiO2 and their virucidal properties under indoor light

Souza

Amorim

Cadamuro

et al. 2022

Carbohydrate Polymer Technologies and Applications

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“…[23][24][25][26] Ti-loaded adsorbents have also proven to be promising phosphate captures in recent reports. 27,28 Importantly, the removal properties of multiple metallic materials might be inherited from their single counterpart while also presenting additional synergetic effects. 29 For instance, Yu et al developed an effective strategy to boost the phosphate removal performance by introducing the basic metal Fe into La (oxy) hydroxides.…”

Section: Introductionmentioning

confidence: 99%

Engineering bimetallic capture sites on hierarchically porous carbon electrode for efficient phosphate electrosorption: multiple active centers and excellent electrochemical properties

Zhang

et al. 2023

J. Mater. Chem. A

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“…Water quality issues are a major challenge in promoting sustainable development worldwide [ 1 , 2 ]. Eutrophication is an increasingly global problem that can cause several adverse environmental impacts, such as anoxia and death of aquatic animals.…”

Section: Introductionmentioning

confidence: 99%

“…Eutrophication is an increasingly global problem that can cause several adverse environmental impacts, such as anoxia and death of aquatic animals. Since phosphorus is one of the main causes of eutrophication [ 2 ], the concentration of phosphate for stringent discharge is less than 0.05 mg L −1 recommended by the United States Environmental Protection Agency (USEPA). Therefore, it is of great significance to explore an efficient strategy for phosphate removal from wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, lignin is the second most abundant biomass component on Earth, and approximately 70 million tons are produced by paper mills worldwide every year [ 7 , 8 , 9 , 10 ]. Moreover, lignin has become a potential bio-adsorbent with excellent adsorption performance owing to its three-dimensional network structure and oxygen-containing functional groups [ 2 , 11 , 12 ]. Thus, developing phosphate bio-adsorbents using lignin has attracted increasing attention [ 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

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A Recyclable Magnetic Aminated Lignin Supported Zr-La Dual-Metal Hydroxide for Rapid Separation and Highly Efficient Sequestration of Phosphate

et al. 2023

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The application of lignin-based adsorbents in the efficient removal of phosphate from wastewater has attracted much attention and been intensively studied in recent years. However, most currently reported lignin-based adsorbents are difficult to recover and recycle. Herein, we have developed a recyclable, nanostructured bio-adsorbent, poly(ethyleneimine) (PEI)-modified lignin (LG) integrated with Fe3O4 and Zr-La dual-metal hydroxide (LG-NH2@Fe3O4@Zr-La), by the Mannich reaction followed by the chemical coprecipitation method. Multilayer adsorption existed on the surface of LG-NH2@Fe3O4@Zr-La based on the isotherm fitting curve, and its adsorption capacity reached 57.8 mg P g−1, exhibiting a higher phosphate uptake than most reported metallic oxide-based composites. The adsorption process was dominated by inner-sphere complexation of ligand-exchange and electrostatic interactions. Moreover, LG-NH2@Fe3O4@Zr-La exhibited excellent selectivity against coexisting anions, and the adsorption was more efficient under acidic conditions. When the phosphate concentration was 2.0 mg P L−1, the removal efficiency of phosphate reached 99.5% and the residual concentration was only 10 μg P L−1, which meets the United States Environmental Protection Agency (USEPA) standard for eutrophication prevention. In addition, the LG-NH2@Fe3O4@Zr-La displayed excellent reusability, maintaining 91.8% of removal efficiency after five cycles. Importantly, owing to the magnetic properties of the loaded Fe3O4, the resulting composite could be separated within 30 s under an external magnetic field. Thus, the separable and recyclable biobased magnetic adsorbent developed in this work exhibited promising application in phosphate capture from real sewage. This research study provides a new perspective for lignin valorization in lignocellulose biorefineries and establishes an approach for developing an economical and efficient bio-adsorbent for phosphate removal from wastewater.

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Preparation of TiO2/cellulose nanocomposites as antibacterial bio-adsorbents for effective phosphate removal from aqueous medium

Cited by 37 publications

References 56 publications

Hydrophobic cellulose-based and non-woven fabrics coated with mesoporous TiO2 and their virucidal properties under indoor light

Hydrophobic cellulose-based and non-woven fabrics coated with mesoporous TiO2 and their virucidal properties under indoor light

Engineering bimetallic capture sites on hierarchically porous carbon electrode for efficient phosphate electrosorption: multiple active centers and excellent electrochemical properties

A Recyclable Magnetic Aminated Lignin Supported Zr-La Dual-Metal Hydroxide for Rapid Separation and Highly Efficient Sequestration of Phosphate

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