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Suwanmajo T, Taokaew S. Biosynthesized Nanocomposite of Bacterial Nanocellulose‐ Tacca leontopetaloides Starch for Sustainable UV Resistant Film. STARCH-STARKE 2022. [DOI: 10.1002/star.202200065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thapanar Suwanmajo
- Department of Chemistry Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand
| | - Siriporn Taokaew
- Department of Materials Science and Bioengineering School of Engineering Nagaoka University of Technology Niigata 940‐2188 Japan
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Mao K, Wu X, Min X, Huang Z, Liu YG, Fang M. New Efficient Visible-Light-Driven Photocatalyst of Chitin-Modified Titanium Dioxide/Carbon Fiber Composites for Wastewater. Sci Rep 2019; 9:16321. [PMID: 31705034 PMCID: PMC6841960 DOI: 10.1038/s41598-019-52833-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 10/24/2019] [Indexed: 01/12/2023] Open
Abstract
To improve the catalyst properties of TiO2 under visible light irradiation, chitin-modified TiO2 was synthesized via a hydrothermal method on the surface of carbon fibers. The microstructure and interface properties of the so-prepared photocatalyst were investigated via X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and UV-visible diffuse reflectance spectroscopy. Our results indicated that the synergetic effect of the crystal phase of TiO2, carbon fiber, and chitin is the main reason leading to the improvement of the photocatalytic activity of the composite catalyst. The modified TiO2 sample with chitin content of 0.6 wt% exhibited the highest photocatalytic activity under visible light irradiation when RhB was chosen as the target degradation product. Compared to the pure TiO2/carbon fiber, the sample of TiO2/carbon fiber with 0.6 wt% of chitin exhibits enhanced visible light activity with an apparent rate of degradation about 2.25 times. The enhancement of the photocatalytic performance of the sample with chitin can be attributed to the relatively high adsorption capacity of the particular network structure and photosensitivity of chitin, which can effectively separate the photoelectron-hole pair recombination. Furthermore, the new composite photocatalyst shows excellent catalytic stability after multiple degradation cycles, indicating that it is a promising photocatalytic material for degrading organic pollutants in wastewater.
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Affiliation(s)
- Kui Mao
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Beijing, 100083, China
| | - Xiaowen Wu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Beijing, 100083, China.
| | - Xin Min
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Beijing, 100083, China
| | - Zhaohui Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Beijing, 100083, China
| | - Yan-Gai Liu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Beijing, 100083, China
| | - Minghao Fang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), 29 Xueyuan Road, Beijing, 100083, China
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Dassanayake RS, Rajakaruna E, Abidi N. Preparation of aerochitin-TiO2
composite for efficient photocatalytic degradation of methylene blue. J Appl Polym Sci 2017. [DOI: 10.1002/app.45908] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Rohan Suranga Dassanayake
- Fiber and Biopolymer Research Institute, Department of Plant and Soil Science; Texas Tech University; Lubbock Texas 79409
| | - Erandathi Rajakaruna
- Fiber and Biopolymer Research Institute, Department of Plant and Soil Science; Texas Tech University; Lubbock Texas 79409
| | - Noureddine Abidi
- Fiber and Biopolymer Research Institute, Department of Plant and Soil Science; Texas Tech University; Lubbock Texas 79409
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Li G, Nandgaonkar AG, Wang Q, Zhang J, Krause WE, Wei Q, Lucia LA. Laccase-immobilized bacterial cellulose/TiO2 functionalized composite membranes: Evaluation for photo- and bio-catalytic dye degradation. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.10.033] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Abstract
The aim of the study was to assess the influence of rotating magnetic field (RMF) on the morphology, physicochemical properties, and the water holding capacity of bacterial cellulose (BC) synthetized by Gluconacetobacter xylinus. The cultures of G. xylinus were exposed to RMF of frequency that equals 50 Hz and magnetic induction 34 mT for 3, 5, and 7 days during cultivation at 28°C in the customized RMF exposure system. It was revealed that BC exposed for 3 days to RMF exhibited the highest water retention capacity as compared to the samples exposed for 5 and 7 days. The observation was confirmed for both the control and RMF exposed BC. It was proved that the BC exposed samples showed up to 26% higher water retention capacity as compared to the control samples. These samples also required the highest temperature to release the water molecules. Such findings agreed with the observation via SEM examination which revealed that the structure of BC synthesized for 7 days was more compacted than the sample exposed to RMF for 3 days. Furthermore, the analysis of 2D correlation of Fourier transform infrared spectra demonstrated the impact of RMF exposure on the dynamics of BC microfibers crystallinity formation.
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Luo Y, Huang J. Hierarchical-Structured Anatase-Titania/Cellulose Composite Sheet with High Photocatalytic Performance and Antibacterial Activity. Chemistry 2014; 21:2568-75. [DOI: 10.1002/chem.201405066] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Indexed: 11/06/2022]
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