| NIR-responsive Collagen-based Sponge Coated with Polydimethylsiloxane/Candle Soot for Oil-Water Separation |
| Received:April 22, 2022 Click here to download the full text |
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| Author Name | Affiliation | E-mail | | Zhang Min* | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China | mzhang@fafu.edu.cn | | Guo Chenchen | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China | | | Wang Yu | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China | | | Zhang Yunlong | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China | | | Wu Hui | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China | | | Huang Liulian | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China | | | Ni Yonghao | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China
Department of Chemical Engineering and Limerick Pulp & Paper Centre, University of New Brunswick, Fredericton, E3B 5A3, Canada | | | Ding Cuicui | College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian Province, 350108, China | | | Chen Lihui | College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian Province, 350002, China | |
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| Abstract:To fabricate an oil-water separation material that is rich in source, eco-friendly, and responsive, in this study, we successfully developed a collagen-based sponge for application to oil-water separation based on a green and facile strategy. In this design, widely-available collagen (COL) was used as the substrate: it was immersed in polydimethylsiloxane (PDMS) suspension with candle soot (CS) nanoparticles, followed by hot curing. The resultant sponge (CS/PDMS-COL) possessed good hydrophobicity with a water contact angle of 148.3° under a low PDMS concentration of 2%. The results from field emission scanning electron microscope, Fourier transform infrared spectrometer, X-ray photoelectron spectrometer, and X-ray diffractometry demonstrated the successful coating of CS and PDMS on the surface of COL substrate. The CS/PDMS-COL can adsorb eight oils, with the adsorption capacity for trichloromethane reaching 95 g/g. With benzene as the target adsorbent, the separation efficiency was maintained at no less than 95% even after recycling 20 times. CS/PDMS-COL was also used to separate oil-in-water emulsion. Moreover, the sponge killed bacteria effectively due to its excellent near-infrared photothermal responsiveness. This study provides new insight into the preparation of facile oil-water separation materials based on naturally occurring biomaterials effortlessly. |
| keywords:collagen sponge oil-water separation candle soot photothermal effect antibacterial property |
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