1
|
Chen X, Yang M, An L, He J, Lai K, Wang Y. A solar-driven nanocellulose Janus aerogel with excellent floating stability and dual functions of oil-water separation and photocatalytic degradation of organic pollutants. Int J Biol Macromol 2024; 278:134698. [PMID: 39147337 DOI: 10.1016/j.ijbiomac.2024.134698] [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: 04/08/2024] [Revised: 07/27/2024] [Accepted: 08/11/2024] [Indexed: 08/17/2024]
Abstract
Effective and practical cleanup of viscous crude oil spills is extremely important in real harsh marine environments. Herein, we designed a solar-driven, nanocellulose-based Janus aerogel (Janus-A) with excellent floating stability and dual function of oil-water separation and degradation of aqueous organic pollutants. Janus-A, with its amphiprotic nature, was prepared through polypyrrole (PPy) deposition, freeze-drying, octyltrichlorosilane (OTS) impregnation, TiO2 spraying on the bottom surface, and UV irradiation treatment. The photothermal conversion effect of PPy coating raised the surface temperature of aerogel to 75.8 °C within 6 min under one simulated solar irradiation, which greatly reduced the viscosity of the crude oil and increased the absorption capacity of the aerogel to 36.7 g/g. Benefiting from the balance between the buoyancy generated by the hydrophobic part and water absorption of the hydrophilic part, Janus-A showed excellent floating stability under simulated winds and waves. In addition, Janus-A exhibited high degradation efficiency for organic pollutants in water owing to the synergistic photocatalytic properties of TiO2 and PPy. These excellent performances make Janus-A ideal for integrated water-oil separation and water remediation.
Collapse
Affiliation(s)
- Xinyue Chen
- School of Water and Environment, Chang'an University, China
| | - Mingyan Yang
- School of Water and Environment, Chang'an University, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of the Ministry of Education, Chang'an University, China; Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources, Chang'an University, China.
| | - Linyu An
- School of Water and Environment, Chang'an University, China
| | - Jing He
- School of Water and Environment, Chang'an University, China
| | - Kunrong Lai
- School of Water and Environment, Chang'an University, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of the Ministry of Education, Chang'an University, China; Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources, Chang'an University, China
| | - Yangyang Wang
- School of Water and Environment, Chang'an University, China
| |
Collapse
|
2
|
Zheng D, Zhu Y, Sun X, Sun H, Yang P, Yu Z, Zhu J, Ye Y, Zhang Y, Jiang F. Equilibrium Moisture Mediated Esterification Reaction to Achieve Over 100% Lignocellulosic Nanofibrils Yield. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402777. [PMID: 38934355 DOI: 10.1002/smll.202402777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/10/2024] [Indexed: 06/28/2024]
Abstract
Lignocellulosic nanofibrils (LCNFs) isolation is recognized as an efficient strategy for maximizing biomass utilization. Nevertheless, achieving a 100% yield presents a formidable challenge. Here, an esterification strategy mediated by the equilibrium moisture in biomass is proposed for LCNFs preparation without the use of catalysts, resulting in a yield exceeding 100%. Different from anhydrous chemical thermomechanical pulp (CTMP0%), the presence of moisture (moisture content of 7 wt%, denoted as CTMP7%) introduces a notably distinct process for the pretreatment of CTMP, comprising the initial disintegration and the post-esterification steps. The maleic acid, generated through maleic anhydride (MA) hydrolysis, degrades the recalcitrant lignin-carbohydrate complex (LCC) structures, resulting in esterified CTMP7% (E-CTMP7%). The highly grafted esters compensate for the mass loss resulting from the partial removal of hydrolyzed lignin and hemicellulose, ensuring a high yield. Following microfluidization, favorable LCNF7% with a high yield (114.4 ± 3.0%) and a high charge content (1.74 ± 0.09 mmol g-1) can be easily produced, surpassing most previous records for LCNFs. Additionally, LCNF7% presented highly processability for filaments, films, and 3D honeycomb structures preparation. These findings provide valuable insights and guidance for achieving a high yield in the isolation of LCNFs from biomass through the mediation of equilibrium moisture.
Collapse
Affiliation(s)
- Dingyuan Zheng
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
- Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, P. R. China
| | - Yeling Zhu
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| | - Xia Sun
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| | - Hao Sun
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
- Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, P. R. China
| | - Pu Yang
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| | - Zhengyang Yu
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| | - Jiaying Zhu
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| | - Yuhang Ye
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| | - Yanhua Zhang
- Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, P. R. China
| | - Feng Jiang
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, The University of British Columbia, Vancouver, V6T 1Z4, Canada
| |
Collapse
|
3
|
Du Y, Jiang P, Yang X, Fu R, Liu L, Miao C, Wang Y, Sai H. Hydrophobic Silk Fibroin-Agarose Composite Aerogel Fibers with Elasticity for Thermal Insulation Applications. Gels 2024; 10:266. [PMID: 38667686 PMCID: PMC11049485 DOI: 10.3390/gels10040266] [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: 03/23/2024] [Revised: 04/08/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Aerogel fibers, characterized by their ultra-low density and ultra-low thermal conductivity, are an ideal candidate for personal thermal management as they hold the potential to effectively reduce the energy consumption of room heating and significantly contribute to energy conservation. However, most aerogel fibers have weak mechanical properties or require complex manufacturing processes. In this study, simple continuous silk fibroin-agarose composite aerogel fibers (SCAFs) were prepared by mixing agarose with silk fibroin through wet spinning and rapid gelation, followed by solvent replacement and supercritical carbon dioxide treatment. Among them, the rapid gelation of the SCAFs was achieved using agarose physical methods with heat-reversible gel properties, simplifying the preparation process. Hydrophobic silk fibroin-agarose composite aerogel fibers (HSCAFs) were prepared using a simple chemical vapor deposition (CVD) method. After CVD, the HSCAFs' gel skeletons were uniformly coated with a silica layer containing methyl groups, endowing them with outstanding radial elasticity. Moreover, the HSCAFs exhibited low density (≤0.153 g/cm3), a large specific surface area (≥254.0 m2/g), high porosity (91.1-94.7%), and excellent hydrophobicity (a water contact angle of 136.8°). More importantly, they showed excellent thermal insulation performance in low-temperature (-60 °C) or high-temperature (140 °C) environments. The designed HSCAFs may provide a new approach for the preparation of high-performance aerogel fibers for personal thermal management.
Collapse
Affiliation(s)
- Yuxiang Du
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Pengjie Jiang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Xin Yang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Rui Fu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Lipeng Liu
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Changqing Miao
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Yaxiong Wang
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| | - Huazheng Sai
- School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China; (Y.D.); (P.J.); (X.Y.); (L.L.); (C.M.); (Y.W.)
- Aerogel Functional Nanomaterials Laboratory, Inner Mongolia University of Science and Technology, Baotou 014010, China
| |
Collapse
|
4
|
Chen L, Wu J, Zhu G, Liu C, Xu T, Huang L, Wu W, Guo J, Xiao H, Dai H, Huang C, Zhang Z, Bian H. Comparison of hydrophobic cellulose nanofibrils modified with different diisocyanates for circulating oil absorption. Int J Biol Macromol 2024; 258:129107. [PMID: 38159705 DOI: 10.1016/j.ijbiomac.2023.129107] [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: 07/28/2023] [Revised: 12/04/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
A large number of polluting substances, including chlorinated organic substances that were highly stable and hazardous, has been emitted due to the rapidly developing chemical industry, which will affect the ecological environment. Nanocellulose aerogels are effective carriers for adsorption of oil substances and organic solvents, however, the extremely strong hydrophilicity and poor mechanical properties limited their widespread applications. In this study, TEMPO-oxidized cellulose nanofibrils was modified with 2, 4-toluene diisocyanate (TDI) and 4,4'-diphenylmethane diisocyanate (MDI) to prepare strong and hydrophobic aerogels for oil adsorption. The main purpose was to evaluate and compare the effects of two diisocyanates on various properties of modified aerogels. It was found that the modified aerogel had better hydrophobic properties, mechanical properties and adsorption properties. In particular, the modified aerogel with TDI as crosslinker showed a better performance, with a maximum chloroform adsorption capacity of 99.3 g/g, a maximum water contact angle of 131.3°, and a maximum compression stress of 36.3 kPa. This study provides further evidence of the potential of functional nanocellulose aerogel in addressing environmental pollution caused by industrial emissions.
Collapse
Affiliation(s)
- Lidong Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Jin Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Gaojian Zhu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Chao Liu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Tingting Xu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Liulian Huang
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, Fuzhou 350108, China
| | - Weibing Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Jiaqi Guo
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
| | - Hongqi Dai
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Chen Huang
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Jiangsu Province Key Laboratory of Biomass Energy and Materials, Nanjing 210042, China.
| | - Zhen Zhang
- South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
| | - Huiyang Bian
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China.
| |
Collapse
|
5
|
Huang B, Jiang J. Construction of Super-Hydrophobic Lignocellulosic Nanofibrils Aerogels as Speedy Oil Absorbents. Appl Biochem Biotechnol 2024; 196:220-232. [PMID: 37115386 DOI: 10.1007/s12010-023-04560-4] [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] [Accepted: 04/18/2023] [Indexed: 04/29/2023]
Abstract
Lignocellulosic nanofibrils (LCNF) aerogels have a three-dimensional structure, with large specific surface area, low density, which is promising to be developed into a new type of adsorbent with high absorption capacity. However, LCNF aerogels have the problem of simultaneous oil and water adsorption. This high hydrophilicity directly leads to low adsorption efficiency in oil-water systems. This paper suggests a facile and economical method for the synthesis of biocompatible CE-LCNF aerogels using LCNF and Castor oil triglycidyl ether (CE) was successfully established. The use of LCNF enabled aerogels to possess remarkably uniform pore size and structural integrity, while the introduction of hydrophobic silica produced stable superhydrophobicity for more than 50 days at room temperature. These aerogels presented desirable hydrophobicity (131.6°), excellent oil adsorption capacity (62.5 g/g) and excellent selective sorption property, making them ideal absorbents for oil spill cleaning. The effects of ratios of LCNF to CE composition, temperatures and oil viscosity on the oil adsorption performance of aerogels were estimated. The results displayed that the aerogels had the maximum adsorption capacity at 25 °C. The pseudo-secondary model had higher validity in oil adsorption kinetic theories compared to the pseudo-first-order model. The CE-LCNF aerogels were excellent super-absorbents for oil removal. Moreover, the LCNF was renewable and nontoxic, which has the potential to promote environmental applications.
Collapse
Affiliation(s)
- Bujun Huang
- College of Safety Science and Engineer, Nanjing Tech University, Nanjing, 211816, China.
| | - Juncheng Jiang
- College of Safety Science and Engineer, Nanjing Tech University, Nanjing, 211816, China
| |
Collapse
|
6
|
Feng Q, Wang L, Wan Z, Bu X, Deng Q, Li D, Chen C, Xu Z. Efficient ultraviolet blocking film on the lignin-rich lignocellulosic nanofibril from bamboo. Int J Biol Macromol 2023; 250:126059. [PMID: 37544557 DOI: 10.1016/j.ijbiomac.2023.126059] [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: 09/16/2022] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/08/2023]
Abstract
The ultraviolet (UV) blocking performance of current bio-based devices is always limited by delignification and exploited chemical treatment. Lignocellulosic nanofibril (LCNF) is a promising green alternative that could efficiently impede UV radiation. Herein, we proposed a robust LCNF film that achieved 99.8 ± 0.19 % UVB blocking, 96.1 ± 0.23 % UVA blocking, and was highly transparent without complex chemical modification. Compared to conventional lignin composites, this LCNF method involves 29.5 ± 2.31 % lignin content directly extracted from bamboo as a broad-spectrum sun blocker. This bamboo-based LCNF film revealed an excellent tensile strength of 94.9 ± 3.6 MPa and outstanding stability, adapting to the natural environment's variability. The residual hemicellulose could also embed the link between lignin and cellulose, confirming high lignin content in the network. The connection between lignin and hemicelluloses in the cellulose network was explored and described for the fibrillation of lignocellulosic nanofibrils. This research highlights the promising development of LCNFs for UV protection and bio-based solar absorption materials.
Collapse
Affiliation(s)
- Qian Feng
- College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China
| | - Luzhen Wang
- College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China
| | - Zhangmin Wan
- Departments of Chemical and Biological Engineering, Chemistry and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - Xiangting Bu
- College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China
| | - Qiaoyun Deng
- College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China
| | - Dagang Li
- College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China.
| | - Chuchu Chen
- College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China.
| | - Zhaoyang Xu
- College of Material Science and Engineering, Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, Jiangsu Province 210037, PR China.
| |
Collapse
|
7
|
Peng D, Zhao J, Liang X, Guo X, Li H. Corn stalk pith-based hydrophobic aerogel for efficient oil sorption. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130954. [PMID: 36860041 DOI: 10.1016/j.jhazmat.2023.130954] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/24/2023] [Accepted: 02/04/2023] [Indexed: 05/14/2023]
Abstract
Bio-based aerogel has become an attractive sorbent for spilled oil and organic pollutants because of its light weight, high porosity and strong sorption capacity. However, the current fabrication process is mainly "bottom-up" technology, which is cost-expensive, time-consuming, and energy-intensive. Herein, we report a top-down, green, efficient and selective sorbent prepared from corn stalk pith (CSP) using the deep eutectic solvent (DES) treatment, followed by TEMPO/NaClO/NaClO2 oxidization and microfibrillation, and then hexamethyldisilazane coating. Such chemical treatments selectively removed lignin and hemicellulose, broke the thin cell walls of natural CSP, forming an aligned porous structure with capillary channels. The resultant aerogels had a density of 29.3 mg/g, a porosity of 98.13%, and a water contact angle of 130.5◦, exhibiting excellent oil/organic solvents sorption performance, with a high sorption capacity in the range of 25.4-36.5 g/g, approximately 5-16-fold higher than CSP, and with fast absorption speed and good reusability.
Collapse
Affiliation(s)
- Dan Peng
- Department of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, China.
| | - Jie Zhao
- Department of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, China; School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001, China
| | - Xujun Liang
- School of Resources and Environmental Science, Quanzhou Normal University, Quanzhou 362000, China
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
| | - Huosheng Li
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China.
| |
Collapse
|
8
|
Surface engineering on cholesteric cellulose nanocrystals films inducing emulsification, organic pollutants detection and separation. Int J Biol Macromol 2023; 233:123451. [PMID: 36709821 DOI: 10.1016/j.ijbiomac.2023.123451] [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: 11/27/2022] [Revised: 12/27/2022] [Accepted: 01/24/2023] [Indexed: 01/28/2023]
Abstract
Nowadays, organic pollutants have been major concerns in many fields. Production of functional materials based on renewable and sustainable resources for organic pollutants detection and removal was of much interest. Herein, multi-functional nanocomposite films based on cellulose nanocrystals (CNCs) with high optical haze, organic pollutant detection and emulsion separation capabilities, have been successfully fabricated based on hydrophobically-modified CNCs suspensions by 2-dodecen-1-succinic anhydride (DDSA) followed by radical polymerization with tridecafluorooctyl (TFMA). The suspensions displayed satisfying oil-in-water emulsion stabilization capabilities and the vacuum-dried films showed birefringence, high transparency, and optical haze (~85 %), due to the ordered arrangements of cellulose nanocrystals. The organic pollutant can be detected through the iridescent colors disappearing by Polarizing Optical Microscope observation. In addition of improved mechanical strength for application (27 MPa) and high contact angle of 131.6°, the hydrophobic films performed as high separation efficiency as >90 % of emulsion, due to the successfully grafting of hydrophobic molecules on the surface of CNCs. Thus, the surface modification for CNCs provide a facile approach of emulsification, pollutants detection and separation properties, which would widen the application potentials of renewable cellulosic resources in fields of environmental protection, engineering control and petroleum industry.
Collapse
|
9
|
Zhao J, Ren Y, Xie Y, Wang H, Wang T, Tang W, Jin Z, Ling Z, Yong Q. Allomorphic regulation of bamboo cellulose by mild alkaline peroxide for holocellulose nanofibrils production. Int J Biol Macromol 2022; 223:49-56. [PMID: 36349657 DOI: 10.1016/j.ijbiomac.2022.10.246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/11/2022] [Accepted: 10/26/2022] [Indexed: 11/05/2022]
Abstract
The exploration of sustainable lignocellulosic nanomaterials with unique properties and applicable functions is receiving growing interest. In this work, holocellulose nanofibrils (HCNFs) were prepared from moso bamboo using mild alkaline peroxide bleaching method (MAPB) followed by mechanical nanofibrillation. MAPB was proved to effectively remove lignin and retain hemicellulose. Meanwhile, partial allomorphic changes from cellulose I to cellulose II were revealed together with varying degrees of crystallinity. Thermogravimetric analysis (TGA) experiment showed an increasing thermal stability trend due to more allomorphic changes into anti-parallel cellulose II. Well-dispersed HCNFs suspensions were successfully prepared by homogenization and HCNFs films with high transparency and flexibility were fabricated. The films reached the maximum tensile strength of 55.8 MPa and tensile strain of 1.55 % along with a calculated toughness of 25 MJ/m3. Moreover, the prepared materials are biocompatible and completely non-toxic, which will theoretically support the application of HCNFs materials in fields of biology, medicine and food industry.
Collapse
Affiliation(s)
- Jinyi Zhao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yuxuan Ren
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Ying Xie
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Hanhua Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Ting Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Wei Tang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhi Jin
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China.
| | - Zhe Ling
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Qiang Yong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| |
Collapse
|
10
|
Hydrophobic carbon-based coating on metal tube with efficient and stable adsorption-desorption of CO2 from wet flue gas. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
11
|
Wang X, Wang P, Su Y, Wang Q, Ling Z, Yong Q. Supramolecular Deconstruction of Bamboo Holocellulose via Hydrothermal Treatment for Highly Efficient Enzymatic Conversion at Low Enzyme Dosage. Int J Mol Sci 2022; 23:11829. [PMID: 36233128 PMCID: PMC9570373 DOI: 10.3390/ijms231911829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 09/30/2022] [Accepted: 10/03/2022] [Indexed: 11/16/2022] Open
Abstract
Hydrothermal pretreatment (HTP) has long been considered as an efficient and green treatment process on lignocellulosic biomass for bioconversion. However, the variations of cellulose supramolecular structures during HTP as well as their effects on subsequent enzymatic conversion are less understood. In this work, bamboo holocellulose with well-connected cellulose and hemicelluloses polysaccharides were hydrothermally treated under various temperatures. Chemical, morphological, and crystal structural determinations were performed systematically by a series of advanced characterizations. Xylan was degraded to xylooligosaccharides in the hydrolyzates accompanied by the reduced degree of polymerization for cellulose. Cellulose crystallites were found to swell anisotropically, despite the limited decrystallization by HTP. Hydrogen bond linkages between cellulose molecular chains were weakened due to above chemical and crystal variations, which therefore swelled, loosened, and separated the condensed cellulose microfibrils. Samples after HTP present notably increased surface area, favoring the adsorption and subsequent hydrolysis by cellulase enzymes. A satisfying enzymatic conversion yield (>85%) at rather low cellulase enzyme dosage (10 FPU/g glucan) was obtained, which would indicate new understandings on the green and efficient bioconversion process on lignocellulosic biomass.
Collapse
Affiliation(s)
- Xinyan Wang
- Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Peng Wang
- Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yan Su
- Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Qiyao Wang
- Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhe Ling
- Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
- State Key Laboratory of Pulp Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qiang Yong
- Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| |
Collapse
|
12
|
Qiao A, Huang R, Penkova A, Qi W, He Z, Su R. Superhydrophobic, elastic and anisotropic cellulose nanofiber aerogels for highly effective oil/water separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121266] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
13
|
Preparation and Characterization of Cellulose Nanofibers from Banana Pseudostem by Acid Hydrolysis: Physico-Chemical and Thermal Properties. MEMBRANES 2022; 12:membranes12050451. [PMID: 35629777 PMCID: PMC9145586 DOI: 10.3390/membranes12050451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/04/2022] [Accepted: 04/11/2022] [Indexed: 11/16/2022]
Abstract
Cellulose is a biopolymer that may be derived from a variety of agricultural wastes such as rice husks, wheat straw, banana, and so on. Cellulose fibril that is reduced in size, often known as nanocellulose (NC), is a bio-based polymer with nanometer-scale widths with a variety of unique properties. The use of NC as a reinforcing material for nanocomposites has become a popular research issue. This research paper focuses on the production of banana pseudostem cellulose nanofiber. Nano-sized fiber was obtained from banana pseudostem through several processes, namely, grinding, sieving, pre-treatment, bleaching, and acid hydrolysis. The product yield was found to be 40.5% and 21.8% for Musa acuminata and Musa balbisiana, respectively, by the weight of the raw fiber. The reduction in weight was due to the removal of hemicellulose and lignin during processing. Transmission electron microscopy (TEM) analysis showed that the average fiber size decreased from 180 µm to 80.3 ± 21.3 nm. Finally, FTIR analysis showed that the fibers experienced chemical changes after the treatment processes.
Collapse
|