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1
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Tushar SI, Anik HR, Uddin MM, Mandal S, Mohakar V, Rai S, Sharma S. Nanocellulose-based porous lightweight materials with flame retardant properties: A review. Carbohydr Polym 2024; 339:122237. [PMID: 38823907 DOI: 10.1016/j.carbpol.2024.122237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 05/03/2024] [Accepted: 05/04/2024] [Indexed: 06/03/2024]
Abstract
This review discusses the development and application of nanocellulose (NC)-aerogels, a sustainable and biodegradable biomaterial, with enhanced flame retardant (FR) properties. NC-aerogels combine the excellent physical and mechanical properties of NC with the low density and thermal conductivity of aerogels, making them promising for thermal insulation and other fields. However, the flammability of NC-aerogels limits their use in some applications, such as electromagnetic interference shielding, oil/water separation, and flame-resistant textiles. The review covers the design, fabrication, modification, and working mechanism of NC porous materials, focusing on how advanced technologies can impart FR properties into them. The review also evaluates the FR performance of NC-aerogels by employing widely recognized tests, such as the limited oxygen index, cone calorimeter, and UL-94. The review also explores the integration of innovative and eco-friendly materials, such as MXene, metal-organic frameworks, dopamine, lignin, and alginate, into NC-aerogels, to improve their FR performance and functionality. The review concludes by outlining the potential, challenges, and limitations of future research on FR NC-aerogels, identifying the obstacles and potential solutions, and understanding the current progress and gaps in the field.
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Affiliation(s)
- Shariful Islam Tushar
- Department of Design and Merchandising, Oklahoma State University, Stillwater, OK 74078, USA; Department of Apparel Engineering, Bangladesh University of Textiles, Tejgaon, Dhaka 1208, Bangladesh
| | - Habibur Rahman Anik
- Department of Apparel Engineering, Bangladesh University of Textiles, Tejgaon, Dhaka 1208, Bangladesh; Department of Chemistry and Chemical & Biomedical Engineering, University of New Haven, West Haven, CT 06516, USA
| | - Md Mazbah Uddin
- Department of Textiles, Merchandising, and Interiors, University of Georgia, 305 Sanford Dr., Athens, GA 30602, USA.
| | - Sumit Mandal
- Department of Design and Merchandising, Oklahoma State University, Stillwater, OK 74078, USA
| | - Vijay Mohakar
- Department of Textiles, Merchandising, and Interiors, University of Georgia, 305 Sanford Dr., Athens, GA 30602, USA
| | - Smriti Rai
- Department of Textiles, Merchandising, and Interiors, University of Georgia, 305 Sanford Dr., Athens, GA 30602, USA
| | - Suraj Sharma
- Department of Textiles, Merchandising, and Interiors, University of Georgia, 305 Sanford Dr., Athens, GA 30602, USA.
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2
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Panahi-Sarmad M, Alikarami N, Guo T, Haji M, Jiang F, Rojas OJ. Aerogels based on Bacterial Nanocellulose and their Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403583. [PMID: 39073312 DOI: 10.1002/smll.202403583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 07/01/2024] [Indexed: 07/30/2024]
Abstract
Microbial cellulose stands out for its exceptional characteristics in the form of biofilms formed by highly interlocked fibrils, namely, bacterial nanocellulose (BNC). Concurrently, bio-based aerogels are finding uses in innovative materials owing to their lightweight, high surface area, physical, mechanical, and thermal properties. In particular, bio-based aerogels based on BNC offer significant opportunities as alternatives to synthetic or mineral counterparts. BNC aerogels are proposed for diverse applications, ranging from sensors to medical devices, as well as thermal and electroactive systems. Due to the fibrous nanostructure of BNC and the micro-porosity of BNC aerogels, these materials enable the creation of tailored and specialized designs. Herein, a comprehensive review of BNC-based aerogels, their attributes, hierarchical, and multiscale features are provided. Their potential across various disciplines is highlighted, emphasizing their biocompatibility and suitability for physical and chemical modification. BNC aerogels are shown as feasible options to advance material science and foster sustainable solutions through biotechnology.
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Affiliation(s)
- Mahyar Panahi-Sarmad
- Department of Wood Science, The University of British Columbia, 2900-2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Niloofar Alikarami
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Tianyu Guo
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Mehri Haji
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Feng Jiang
- Department of Wood Science, The University of British Columbia, 2900-2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Orlando J Rojas
- Department of Wood Science, The University of British Columbia, 2900-2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada
- Bioproducts Institute, University of British Columbia, 2385 Agronomy Rd and East Mall, Vancouver, BC, V6T 1Z4, Canada
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC, V6T 1Z1, Canada
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Liu S, Sun M, Wu C, Zhu K, Hu Y, Shan M, Wang M, Wu K, Wu J, Xie Z, Tang H. Fabrication of Loose Nanofiltration Membrane by Crosslinking TEMPO-Oxidized Cellulose Nanofibers for Effective Dye/Salt Separation. Molecules 2024; 29:2246. [PMID: 38792108 PMCID: PMC11123938 DOI: 10.3390/molecules29102246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/06/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
Dye/salt separation has gained increasing attention in recent years, prompting the quest to find cost-effective and environmentally friendly raw materials for synthesizing high performance nanofiltration (NF) membrane for effective dye/salt separation. Herein, a high-performance loose-structured NF membrane was fabricated via a simple vacuum filtration method using a green nanomaterial, 2,2,6,6-tetramethylpiperidine-1-oxide radical (TEMPO)-oxidized cellulose nanofiber (TOCNF), by sequentially filtrating larger-sized and finer-sized TOCNFs on a microporous substrate, followed by crosslinking with trimesoyl chloride. The resulting TCM membrane possessed a separating layer composed entirely of pure TOCNF, eliminating the need for other polymer or nanomaterial additives. TCM membranes exhibit high performance and effective dye/salt selectivity. Scanning Electron Microscope (SEM) analysis shows that the TCM membrane with the Fine-TOCNF layer has a tight layered structure. Further characterizations via Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) confirmed the presence of functional groups and chemical bonds of the crosslinked membrane. Notably, the optimized TCM-5 membrane exhibits a rejection rate of over 99% for various dyes (Congo red and orange yellow) and 14.2% for NaCl, showcasing a potential candidate for efficient dye wastewater treatment.
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Affiliation(s)
- Shasha Liu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Mei Sun
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Can Wu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Kaixuan Zhu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Ying Hu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Meng Shan
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Meng Wang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Kai Wu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Jingyi Wu
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
| | - Zongli Xie
- CSIRO Manufacturing, Private Bag 10, Clayton South, VIC 3169, Australia
| | - Hai Tang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu 241000, China; (S.L.); (M.S.); (C.W.); (K.Z.); (Y.H.); (M.S.); (M.W.); (K.W.); (J.W.)
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Qi J, Wang X, Zhang H, Liu X, Wang W, He Q, Guo F. Biopolymer Meets Nanoclay: Rational Fabrication of Superb Adsorption Beads from Green Precursors for Efficient Capture of Pb(II) and Dyes. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:766. [PMID: 38727360 PMCID: PMC11085593 DOI: 10.3390/nano14090766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 04/18/2024] [Accepted: 04/24/2024] [Indexed: 05/12/2024]
Abstract
Renewable, green, and safe natural biopolymer-derived materials are highly desired for the purification of pollutants, but significantly improving their performance without the introduction of additional harmful chemicals remains a huge challenge. Based on the concept of "structure optimization design", environment-friendly composite beads (named SA/PASP/RE) with excellent adsorption performance and recyclability were rationally constructed through a green ionic crosslinking route, using the completely green biopolymer sodium alginate (SA), sodium salt of polyaspartic acid (PASP), and the natural nanoclay rectorite (RE) as starting materials. The nano-layered RE was embedded in the polymer matrix to prevent the polymer chain from becoming over-entangled so that more adsorption sites inside the polymer network were exposed, which effectively improved the mass transfer efficiency of the adsorbent and the removal rate of contaminants. The composite beads embedded with 0.6% RE showed high adsorption capacities of 211.78, 197.13, and 195.69 mg/g for Pb(II) and 643.00, 577.80, and 567.10 mg/g for methylene blue (MB) in Yellow River water, Yangtze River water, and tap water, respectively. And the beads embedded with 43% RE could efficiently adsorb Pb(II) and MB with high capacities of 187.78 mg/g and 586.46 mg/g, respectively. This study provides a new route to design and develop a green, cost-effective, and efficient adsorbent for the decontamination of wastewater.
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Affiliation(s)
| | | | | | | | | | | | - Fang Guo
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; (J.Q.); (X.W.); (H.Z.); (X.L.); (W.W.); (Q.H.)
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5
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Tian G, Duan C, Lu W, Liu X, Zhao B, Meng Z, Wang Q, Nie S. Cellulose acetate-based electrospun nanofiber aerogel with excellent resilience and hydrophobicity for efficient removal of drug residues and oil contaminations from wastewater. Carbohydr Polym 2024; 329:121794. [PMID: 38286531 DOI: 10.1016/j.carbpol.2024.121794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/31/2024]
Abstract
Cellulose acetate (CA)-based electrospun nanofiber aerogel (ENA) has drawn extensive attention for wastewater remediation due to its unique separation, inherent porosity and biodegradability. However, the low mechanical strength, poor durability, and limited adsorption ability hinder its further applications. We herein propose using silane-modified ENA, namely T-CA@Si@ZIF-67 (T-ENA), with enhanced resilience, hydrophobicity, durability and hetero-catalysis to remediate a complex wastewater containing oil and drug residues. The robust T-ENA was fabricated by pre-doping tetraethyl orthosilicate (TEOS) and ligand in its spinning precursors, followed by in-situ anchoring of porous ZIF-67 on the electrospun nanofibers (ENFs) via seeding method before freeze-drying and thermal curing (T). Results show that the T-ENA displays enhanced mechanical stability/resilience and hydrophobicity without compromise of its high porosity (>98 %) and low density (10 mg/cm3) due to the silane cross-linking. As a result, the hydrophobic T-ENA shows over 99 % separation efficiency towards different oil-water solutions. Meanwhile, thanks to the enhanced adsorption-catalytic ability and the activation of peroxymonosulfate (PMS) from the porous ZIF-67, fast degradation of carbamazepine (CBZ) residue in the wastewater can be achieved within 20 min. This work might provide a novel strategy for developing CA aerogels to remove organic pollutants.
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Affiliation(s)
- Guodong Tian
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Chao Duan
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China; College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science and Technology, Xi'an, 710021, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
| | - Wanli Lu
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science and Technology, Xi'an, 710021, China; Kunshan Banknote Paper Industry Co., Ltd, Suzhou 215000, China
| | - Xiaoshuang Liu
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Baoke Zhao
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Zixuan Meng
- College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Shaanxi University of Science and Technology, Xi'an, 710021, China
| | - Qiang Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Shuangxi Nie
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China.
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Babaei-Ghazvini A, Vafakish B, Patel R, Falua KJ, Dunlop MJ, Acharya B. Cellulose nanocrystals in the development of biodegradable materials: A review on CNC resources, modification, and their hybridization. Int J Biol Macromol 2024; 258:128834. [PMID: 38128804 DOI: 10.1016/j.ijbiomac.2023.128834] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 12/03/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
The escalating demand for sustainable materials has propelled cellulose into the spotlight as a promising alternative to petroleum-based products. As the most abundant organic polymer on Earth, cellulose is ubiquitous, found in plants, bacteria, and even a unique marine animal-the tunicate. Cellulose polymers naturally give rise to microscale semi-crystalline fibers and nanoscale crystalline regions known as cellulose nanocrystals (CNCs). Exhibiting rod-like structures with widths spanning 3 to 50 nm and lengths ranging from 50 nm to several microns, CNC characteristics vary based on the cellulose source. The degree of crystallinity, crucial for CNC properties, fluctuates between 49 and 95 % depending on the source and synthesis method. CNCs, with their exceptional properties such as high aspect ratio, relatively low density (≈1.6 g cm-3), high axial elastic modulus (≈150 GPa), significant tensile strength, and birefringence, emerge as ideal candidates for biodegradable fillers in nanocomposites and functional materials. The percolation threshold, a mathematical concept defining long-range connectivity between filler and polymer, governs the effectiveness of reinforcement in nanocomposites. This threshold is intricately influenced by the aspect ratio and molecular interaction strength, impacting CNC performance in polymeric and pure nanocomposite materials. This comprehensive review explores diverse aspects of CNCs, encompassing their derivation from various sources, methods of modification (both physical and chemical), and hybridization with heterogeneous fillers. Special attention is devoted to the hybridization of CNCs derived from tunicates (TCNC) with those from wood (WCNC), leveraging the distinct advantages of each. The overarching objective is to demonstrate how this hybridization strategy mitigates the limitations of WCNC in composite materials, offering improved interaction and enhanced percolation. This, in turn, is anticipated to elevate the reinforcing effects and pave the way for the development of nanocomposites with tunable viscoelastic, physicochemical, and mechanical properties.
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Affiliation(s)
- Amin Babaei-Ghazvini
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada.
| | - Bahareh Vafakish
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada.
| | - Ravi Patel
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada.
| | - Kehinde James Falua
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada.
| | - Matthew J Dunlop
- Tunistrong Technologies Incorporated, 7207 Route 11, Wellington, Charlottetown, PE C0B 20E, Canada.
| | - Bishnu Acharya
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada.
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Amen R, Elsayed I, Schueneman GT, Hassan EB. Self-Assembled Aminated and TEMPO Cellulose Nanofibers (Am/TEMPO-CNF) Aerogel for Adsorptive Removal of Oxytetracycline and Chloramphenicol Antibiotics from Water. Gels 2024; 10:77. [PMID: 38275851 PMCID: PMC10815620 DOI: 10.3390/gels10010077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/13/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024] Open
Abstract
Antibiotics are used for the well-being of human beings and other animals. Detectable levels of antibiotics can be found in pharmaceutical, municipal, and animal effluents. Therefore, the treatment of antibiotic contaminated water is of great concern. In this study, we fabricated a sustainable aminated/TEMPO cellulose nanofiber (Am/TEMPO-CNF) aerogel to remove oxytetracycline (OTC) and chloramphenicol (CAP) from synthetic wastewater. The prepared aerogel was characterized using different analytical techniques such as elemental analysis, FTIR, TGA, SEM-EDS, and N2 adsorption-desorption isotherms. The characterization techniques confirmed the presence and interaction of quaternary amine -[NR3]+ and -COOH groups on Am/TEMPO-CNF with OTC and CAP, which validates the successful modification of Am/TEMPO-CNF. The adsorption process of the pollutants was examined as a function of solution pH, concentrations, reaction time, and temperatures. The maximum adsorption capacity was 153.13 and 150.15 mg/g for OTC and CAP, respectively. The pseudo-second order (PSO-2) was well fitted to both OTC and CAP, confirming the removal is via chemisorption. Hydrogen bonding and electrostatic attraction have been postulated as key factors in facilitating OTC and CAP adsorption according to spectroscopic studies. Energetically, the adsorption was spontaneous and endothermic for both pollutants. In conclusion, the efficient removal rate and excellent reusability of Am/TEMPO-CNF indicate the strong potential of the adsorbent for antibiotics' removal.
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Affiliation(s)
- Rabia Amen
- Department of Sustainable Bioproducts, Mississippi State University, P.O. Box 9820, Mississippi State, MS 39762, USA; (R.A.); (I.E.)
| | - Islam Elsayed
- Department of Sustainable Bioproducts, Mississippi State University, P.O. Box 9820, Mississippi State, MS 39762, USA; (R.A.); (I.E.)
- Department of Chemistry, Faculty of Science, Damietta University, New Damietta 34517, Egypt
| | | | - El Barbary Hassan
- Department of Sustainable Bioproducts, Mississippi State University, P.O. Box 9820, Mississippi State, MS 39762, USA; (R.A.); (I.E.)
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Yuan M, Liu D, Shang S, Song Z, You Q, Huang L, Cui S. A novel magnetic Fe 3O 4/cellulose nanofiber/polyethyleneimine/thiol-modified montmorillonite aerogel for efficient removal of heavy metal ions: Adsorption behavior and mechanism study. Int J Biol Macromol 2023; 253:126634. [PMID: 37678684 DOI: 10.1016/j.ijbiomac.2023.126634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/17/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023]
Abstract
To efficiently remove heavy metals from wastewater, designing an adsorbent with high adsorption capacity and ease of recovery is necessary. This paper presents a novel magnetic hybridized aerogel, Fe3O4/cellulose nanofiber/polyethyleneimine/thiol-modified montmorillonite (Fe3O4/CNF/PEI/SHMMT), and explores its adsorption performance and mechanism for Pb2+, Cu2+, and Cd2+ in aqueous solutions. The hybrid aerogel has a slit-like porous structure and numerous exposed active sites, which facilitates the uptake of metal ions by adsorption. Pb2+, Cu2+, and Cd2+ adsorption by the hybridized aerogel followed the second-order kinetics and the Langmuir isotherm model, the maximum adsorption of Pb2+, Cu2+, and Cd2+ at 25 °C, pH = 6, 800 mg/L was 429.18, 381.68 and 299.40 mg/g, respectively. The adsorption process was primarily attributed to monolayer chemical adsorption, a spontaneous heat-absorption reaction. FTIR, XPS and DFT studies confirmed that the adsorption mechanisms of Fe3O4/CNF/PEI/SHMMT on Pb2+, Cu2+, and Cd2+ were mainly chelation, coordination, and ion exchange. The lowest adsorption energy of Pb2+ on the hybrid aerogel was calculated to be -2.37 Ha by DFT, which indicates that the sample has higher adsorption affinity and preferential selectivity for Pb2+. After 5 cycles, the adsorption efficiency of the aerogel was still >85 %. The incorporation of Fe3O4 improved the mechanical properties of the aerogel. The Fe3O4/CNF/PEI/SHMMT has fast magnetic responsiveness, and it is easy to be separated and recovered after adsorption, which is a promising potential for the treatment of heavy metal ions.
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Affiliation(s)
- Man Yuan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Dongsheng Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Sisi Shang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Zihao Song
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Qi You
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Longjin Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China
| | - Sheng Cui
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, 211800 Nanjing, China; Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, 211800 Nanjing, China.
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9
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Wu M, Shao Z, Zhao N, Zhang R, Yuan G, Tian L, Zhang Z, Gao W, Bai H. Biomimetic, knittable aerogel fiber for thermal insulation textile. Science 2023; 382:1379-1383. [PMID: 38127754 DOI: 10.1126/science.adj8013] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 11/06/2023] [Indexed: 12/23/2023]
Abstract
Aerogels have been considered as an ideal material for thermal insulation. Unfortunately, their application in textiles is greatly limited by their fragility and poor processability. We overcame these issues by encapsulating the aerogel fiber with a stretchable layer, mimicking the core-shell structure of polar bear hair. Despite its high internal porosity over 90%, our fiber is stretchable up to 1000% strain, which is greatly improved compared with that of traditional aerogel fibers (~2% strain). In addition to its washability and dyeability, our fiber is mechanically robust, retaining its stable thermal insulation property after 10,000 stretching cycles (100% strain). A sweater knitted with our fiber was only one-fifth as thick as down, with similar performance. Our strategy for this fiber provides rich possibilities for developing multifunctional aerogel fibers and textiles.
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Affiliation(s)
- Mingrui Wu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
| | - Ziyu Shao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
| | - Nifang Zhao
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
| | - Rongzhen Zhang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
| | - Guodong Yuan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
| | - Lulu Tian
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
| | - Zibei Zhang
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
| | - Weiwei Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China
| | - Hao Bai
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
- Institute of Zhejiang University-Quzhou, Quzhou 324000, China
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Yang J, Han X, Yang W, Hu J, Zhang C, Liu K, Jiang S. Nanocellulose-based composite aerogels toward the environmental protection: Preparation, modification and applications. ENVIRONMENTAL RESEARCH 2023; 236:116736. [PMID: 37495064 DOI: 10.1016/j.envres.2023.116736] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/19/2023] [Accepted: 07/23/2023] [Indexed: 07/28/2023]
Abstract
Nanocellulose aerogel has the advantages of porosity, low density and high specific surface area, which can effectively realize the adsorption and treatment of wastewater waste gas. The methods of preparing nanocellulose mainly include mechanical, chemical and biological methods. Nanocellulose is formed into nanocellulose aerogel after gelation, solvent replacement and drying processes. Based on the advantages of easy modification of nanocellulose aerogels, nanocellulose aerogels can be functionalized with conductive fillers, reinforcing fillers and other materials to give nanocellulose aerogels in electrical, mechanical and other properties. Through functionalization, the properties of nanocellulose composite aerogel such as hydrophobicity and adsorption are improved, and the aerogel is endowed with the ability of electrical conductivity and electromagnetic shielding. Through functionalization, the applicability and general applicability of nanocellulose composite aerogel in the field of environmental protection are improved. In this paper, the preparation and functional modification methods of nanocellulose aerogels are reviewed, and the application prospects of nanocellulose composite aerogels in common environmental protection fields such as dye adsorption, heavy metal ion adsorption, gas adsorption, electromagnetic shielding, and oil-water separation are specifically reviewed, and new solutions are proposed.
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Affiliation(s)
- Jingjiang Yang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International In-novation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Xiaoshuai Han
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International In-novation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China
| | - Weisen Yang
- Key Laboratory of Green Chemical Technology of Fujian Province University, College of Ecological and Resources Engineering, Wuyi University, Wuyishan, 354300, China.
| | - Jiapeng Hu
- Key Laboratory of Green Chemical Technology of Fujian Province University, College of Ecological and Resources Engineering, Wuyi University, Wuyishan, 354300, China
| | - Chunmei Zhang
- Institute of Materials Science and Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Kunming Liu
- Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Shaohua Jiang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International In-novation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, 210037, China; Key Laboratory of Green Chemical Technology of Fujian Province University, College of Ecological and Resources Engineering, Wuyi University, Wuyishan, 354300, China.
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