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Xue X, Zhang J, Li M, Ao C, Wang Q, Zhao J, Zhang W, Lu C. Facile fabrication of three-dimensional nanofibrous foams of cellulose@g-C 3N 4@Cu 2O with superior visible-light photocatalytic performance. Carbohydr Polym 2023; 303:120455. [PMID: 36657843 DOI: 10.1016/j.carbpol.2022.120455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/27/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
In this work, a unique three-dimensional nanofibrous foam of cellulose@g-C3N4@Cu2O was prepared via electrospinning followed by a foaming process. A cellulose solution in DMAc/LiCl containing g-C3N4 and CuSO4 was applied for electrospinning, while aqueous alkali was used as the coagulation bath. The solidification of electrospun cellulose/g-C3N4 nanofibers would be accompanied with in-situ formation of Cu(OH)2 nanoparticles. Interestingly, the hydrogen gas (H2) generated from NaBH4 could transform the two-dimensional membrane into a three-dimensional foam, leading to the increased specific surface area and porosity of the material. Meanwhile, the Cu(OH)2 nanoparticles attached on the electrospun nanofibers were reduced to Cu2O to form a p-n heterostructure between Cu2O and g-C3N4. The as-prepared cellulose@g-C3N4@Cu2O foam exhibited a high degradation efficiency (99.5 %) for the dye of Congo Red under visible light radiation. And ·O2- was discovered to be the dominant reactive species responsive for dye degradation. Moreover, the cellulose@g-C3N4@Cu2O could maintain its initial degradation efficiency even after seven cycles of reuse, suggesting the excellent stability and cycling performance.
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Affiliation(s)
- Xiaolin Xue
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Jian Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Mei Li
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Chenghong Ao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Qunhao Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Jiangqi Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China.
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China.
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Ao C, Jiang L, Wang Q, Xue X, Gai J, Zhang W, Lu C. One-pot superhydrophilic surface modification of waste polyurethane foams for high-efficiency oil/water separation. J Environ Manage 2022; 315:115140. [PMID: 35567878 DOI: 10.1016/j.jenvman.2022.115140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 04/06/2022] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
Despite of the fact that polymers have brought tremendous convenience to human life, they have also inevitably caused considerable environmental pollution after their service life. Therefore, a feasible strategy that can effectively recycle waste polymers and endow them with high added value is much desired. Superwetting materials have shown great promise in oily wastewater treatment because of their high oil/water separation efficiency. However, most of these materials present some limitations, such as complex preparation procedures and poor salt tolerance, which hamper their practical applications. In this study, an iron hydroxide@polydopamine@waste polyurethane foam (Fe(OH)3@PDA@WPU) was synthesized via a facile and mild "one-pot" reaction. During this process, polymerization of dopamine and in situ growth of Fe(OH)3 were simultaneously realized, and the resultant PDA and Fe(OH)3 nanoparticles were firmly attached to the surface of WPU. Due to the abundant hydrophilic groups from PDA and Fe(OH)3 coupled with the surface roughness created by Fe(OH)3 nanoparticles, the surface properties of the foam could be changed from hydrophobic to superhydrophilic. Remarkably, the Fe(OH)3@PDA@WPU was capable of separating various oil/water mixtures even under some severe conditions (e.g. erosion in a saturated sodium chloride solution and longtime sonication), demonstrating high potential in marine oily sewage treatment. Moreover, this work also paved a new path for reducing the negative impact of waste polymer foams on our environment, and in the meantime realizing their high value utilization.
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Affiliation(s)
- Chenghong Ao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu, 610065, China; Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, 650500, China
| | - Lichao Jiang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu, 610065, China
| | - Qunhao Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu, 610065, China
| | - Xiaolin Xue
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu, 610065, China
| | - Jinggang Gai
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu, 610065, China
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu, 610065, China; Advanced Polymer Materials Research Center of Sichuan University, Shishi, 362700, China.
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu, 610065, China; Advanced Polymer Materials Research Center of Sichuan University, Shishi, 362700, China.
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Wang Q, Li M, Zheng Z, Niu Y, Xue X, Ao C, Zhang W, Lu C. Polyethylenimine-Functionalized Nanofiber Nonwovens Electrospun from Cotton Cellulose for Wound Dressing with High Drug Loading and Sustained Release Properties. Polymers (Basel) 2022; 14:polym14091748. [PMID: 35566917 PMCID: PMC9105497 DOI: 10.3390/polym14091748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/15/2022] [Accepted: 04/21/2022] [Indexed: 11/28/2022] Open
Abstract
Electrospun cellulose nanofiber nonwovens have shown promise in wound dressing owing to the highly interconnected pore structure, high hydrophilicity coupled with other coveted characteristics of biodegradability, biocompatibility and renewability. However, electrospun cellulose wound dressings with loaded drugs for better wound healing have been rarely reported. In this study, a novel wound dressing with a high drug loading capacity and sustained drug release properties was successfully fabricated via electropinning of cellulose followed by polyethylenimine (PEI)-functionalization. Remarkably, the grafted PEI chains on the surface of electrospun cellulose nanofibers provided numerous active amino groups, while the highly porous structure of nonwovens could be well retained after modification, which resulted in enhanced adsorption performance against the anionic drug of sodium salicylate (NaSA). More specifically, when immersed in 100 mg/L NaSA solution for 24 h, the as-prepared cellulose-PEI nonwoven displayed a multilayer adsorption behavior. And at the optimal pH of 3, a high drug loading capacity of 78 mg/g could be achieved, which was 20 times higher than that of pristine electrospun cellulose nonwoven. Furthermore, it was discovered that the NaSA-loaded cellulose-PEI could continuously release the drug for 12 h in simulated body fluid (SBF), indicating the versatility of cellulose-PEI as an advanced wound dressing with drug carrier functionalities.
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Affiliation(s)
- Qunhao Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; (Q.W.); (M.L.); (Z.Z.); (Y.N.); (X.X.); (C.A.)
| | - Mei Li
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; (Q.W.); (M.L.); (Z.Z.); (Y.N.); (X.X.); (C.A.)
| | - Zhuo Zheng
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; (Q.W.); (M.L.); (Z.Z.); (Y.N.); (X.X.); (C.A.)
| | - Yan Niu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; (Q.W.); (M.L.); (Z.Z.); (Y.N.); (X.X.); (C.A.)
| | - Xiaolin Xue
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; (Q.W.); (M.L.); (Z.Z.); (Y.N.); (X.X.); (C.A.)
| | - Chenghong Ao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; (Q.W.); (M.L.); (Z.Z.); (Y.N.); (X.X.); (C.A.)
- Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming 650500, China
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; (Q.W.); (M.L.); (Z.Z.); (Y.N.); (X.X.); (C.A.)
- Advanced Polymer Materials Research Center, Sichuan University, Shishi 362700, China
- Correspondence: (W.Z.); (C.L.); Tel.: +86-28-85460607 (W.Z.); Fax: +86-28-85402465 (W.Z.)
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China; (Q.W.); (M.L.); (Z.Z.); (Y.N.); (X.X.); (C.A.)
- Advanced Polymer Materials Research Center, Sichuan University, Shishi 362700, China
- Correspondence: (W.Z.); (C.L.); Tel.: +86-28-85460607 (W.Z.); Fax: +86-28-85402465 (W.Z.)
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Zhang J, Yuan W, Xia T, Ao C, Zhao J, Huang B, Wang Q, Zhang W, Lu C. A TiO 2 Coated Carbon Aerogel Derived from Bamboo Pulp Fibers for Enhanced Visible Light Photo-Catalytic Degradation of Methylene Blue. Nanomaterials (Basel) 2021; 11:239. [PMID: 33477531 PMCID: PMC7831082 DOI: 10.3390/nano11010239] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 11/22/2022]
Abstract
Carbon aerogels (CA) derived from bamboo cellulose fibers were coupled with TiO2 to form CA/TiO2 hybrids, which exhibited extraordinary performance on the photo-catalytic degradation of methylene blue (MB). The structure and morphology of CA/TiO2 were characterized by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and Raman spectrum. The CA displayed a highly porous and interconnected three-dimensional framework structure, while introducing the catalytic active sites of TiO2 onto the aerogel scaffold could remarkably enhance its photo-catalytic activity. The adsorption and photo-catalytic degradation of MB by the CA/TiO2 hybrid were investigated. The maximum adsorption capacity of CA/TiO2 for MB was 18.5 mg/g, which outperformed many similar materials reported in the literature. In addition, compared with other photo-catalysts, the present CA/TiO2 demonstrated superior photo-catalytic performance. Almost 85% of MB in 50 mL solution with a MB concentration of 10 mg/L could be effectively degraded by 15 mg CA/TiO2 in 300 min.
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Affiliation(s)
- Jian Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
| | - Wei Yuan
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
| | - Tian Xia
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
| | - Chenghong Ao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
| | - Jiangqi Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
| | - Bingxue Huang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
| | - Qunhao Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
- Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China; (J.Z.); (W.Y.); (T.X.); (C.A.); (J.Z.); (B.H.); (Q.W.)
- Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China
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Ao C, Zhao J, Li Q, Zhang J, Huang B, Wang Q, Gai J, Chen Z, Zhang W, Lu C. Biodegradable all-cellulose composite membranes for simultaneous oil/water separation and dye removal from water. Carbohydr Polym 2020; 250:116872. [DOI: 10.1016/j.carbpol.2020.116872] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/26/2020] [Accepted: 07/30/2020] [Indexed: 10/23/2022]
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Wang Q, Xia T, Jia X, Zhao J, Li Q, Ao C, Deng X, Zhang X, Zhang W, Lu C. Honeycomb-structured carbon aerogels from nanocellulose and skin secretion of Andrias davidianus for highly compressible binder-free supercapacitors. Carbohydr Polym 2020; 245:116554. [DOI: 10.1016/j.carbpol.2020.116554] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/30/2020] [Accepted: 05/30/2020] [Indexed: 12/21/2022]
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Liu W, Ao C, Ding H, Khas E. PSXIV-40 Effects of Different Diets on Fatty Acid Composition and Lipid Stability of Intramuscular Fat in DorperxThin-Tailed Han Crossbred Mutton Lambs. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- W Liu
- College of animal science, Inner Mongolia Agricultural University,Hohhot, Nei Mongol,China (People’s Republic)
| | - C Ao
- College of animal science, Inner Mongolia Agricultural University,Hohhot, Nei Mongol,China (People’s Republic)
| | - H Ding
- College of animal science, Inner Mongolia Agricultural University,Hohhot, Nei Mongol,China (People’s Republic)
| | - E Khas
- College of animal science, Inner Mongolia Agricultural University,Hohhot, Nei Mongol,China (People’s Republic)
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Ao C, Yuan W, Zhao J, He X, Zhang X, Li Q, Xia T, Zhang W, Lu C. Superhydrophilic graphene oxide@electrospun cellulose nanofiber hybrid membrane for high-efficiency oil/water separation. Carbohydr Polym 2017; 175:216-222. [DOI: 10.1016/j.carbpol.2017.07.085] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 07/20/2017] [Accepted: 07/29/2017] [Indexed: 10/19/2022]
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Ning LT, Dong GZ, Ao C, Zhang DG, Erdene K, Zhang FQ, Wen J, Zhang TL. Effects of continuous low dose infusion of lipopolysaccharide on inflammatory responses, milk production and milk quality in dairy cows. J Anim Physiol Anim Nutr (Berl) 2017; 102:e262-e269. [PMID: 28503821 DOI: 10.1111/jpn.12737] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 04/06/2017] [Indexed: 11/30/2022]
Abstract
The objective of this study was to evaluate the effects of continuous low dose infusion of lipopolysaccharide (LPS) on inflammatory responses and milk production and quality in lactating dairy cows. Eight Holstein cows were assigned to two treatments in a cross-over experimental design. Cows were infused intravenously either with saline solution or with saline solution containing LPS from Escherichia coli O111:B4 at a dose of 0.01 μg LPS/kg body weight for approximately 6 hr each day during a seven-day trial. The clinical symptoms and milk production performance were observed. Milk samples were analysed for conventional components, fatty acids and amino acids. And jugular vein and mammary vein plasma samples were analysed for concentrations of cytokines and acute phase proteins. LPS infusion decreased feed intake and milk yield. An increase in body temperature was observed after LPS infusion. LPS infusion also increased plasma concentrations of interleukin-1β, serum amyloid A, LPS-binding protein, C-reactive protein and haptoglobin. LPS infusion decreased the contents of some fatty acids, such as C17:1, C18:0, C18:1n9 (trans) and C18:2n6 (trans), and most amino acids except for methionine, threonine, histidine, cysteine, tyrosine and proline in the milk. The results indicated that a continued low dose infusion of LPS can induce an inflammatory response, decrease milk production and reduce milk quality.
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Affiliation(s)
- L T Ning
- Key Laboratory of Grass and Herbivores of Chongqing, College of Animal Science and Technology, Southwest University, Chongqing, China
| | - G Z Dong
- Key Laboratory of Grass and Herbivores of Chongqing, College of Animal Science and Technology, Southwest University, Chongqing, China
| | - C Ao
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - D G Zhang
- Key Laboratory of Grass and Herbivores of Chongqing, College of Animal Science and Technology, Southwest University, Chongqing, China
| | - K Erdene
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - F Q Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - J Wen
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - T L Zhang
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
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Huang J, Du P, Ao C, Ho M, Lei M, Zhao D, Wang Z. Multivariate analysis for stormwater quality characteristics identification from different urban surface types in macau. Bull Environ Contam Toxicol 2007; 79:650-654. [PMID: 17940712 DOI: 10.1007/s00128-007-9297-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2007] [Accepted: 10/03/2007] [Indexed: 05/25/2023]
Abstract
Statistical analysis of stormwater runoff data enables general identification of runoff characteristics. Six catchments with different urban surface type including roofs, roadway, park, and residential/commercial in Macau were selected for sampling and study during the period from June 2005 to September 2006. Based on univariate statistical analysis of data sampled, major pollutants discharged from different urban surface type were identified. As for iron roof runoff, Zn is the most significant pollutant. The major pollutants from urban roadway runoff are TSS and COD. Stormwater runoff from commercial/residential and Park catchments show high level of COD, TN, and TP concentration. Principal component analysis was further done for identification of linkages between stormwater quality and urban surface types. Two potential pollution sources were identified for study catchments with different urban surface types. The first one is referred as nutrients losses, soil losses and organic pollutants discharges, the second is related to heavy metals losses. PCA was proved to be a viable tool to explain the type of pollution sources and its mechanism for different urban surface type catchments.
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Affiliation(s)
- J Huang
- Department of Environmental Science and Engineering, Tsinghua University, Beijing, 100084, People's Republic of China.
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