High-performance CrN tight ultrafiltration membranes prepared by in situ gas–solid catalytic reaction
To expand the industrial application of membranes, high-performance CrN tight ultrafiltration membranes (UF) were prepared by in situ gas–solid reaction using Cr2O3 as a nanoprecursor and TiO2 as a nitriding catalyst in ammonia atmosphere. The phase composition and microstructure of CrN UF membranes...
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Elsevier
2021-06-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521002227 |
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doaj-db93b916d5a94b8e862a485dadd4c15c2021-05-18T04:10:14ZengElsevierMaterials & Design0264-12752021-06-01204109669High-performance CrN tight ultrafiltration membranes prepared by in situ gas–solid catalytic reactionQi Yan0Jinquan Sun1Yanpeng Xue2Guopeng Zhao3Tingting Liu4Xiaohong Liu5Qingkun He6Kun Xie7College of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, ChinaCollege of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, China; The Project National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang 471023, China; Corresponding authors at: College of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, China (J. Sun); National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China (Y. Xue).National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China; Corresponding authors at: College of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, China (J. Sun); National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China (Y. Xue).College of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, ChinaCollege of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, ChinaCollege of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, ChinaCollege of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, ChinaCollege of Materials Science and Technology, Shandong University of Science and Technology, Qingdao 266510, ChinaTo expand the industrial application of membranes, high-performance CrN tight ultrafiltration membranes (UF) were prepared by in situ gas–solid reaction using Cr2O3 as a nanoprecursor and TiO2 as a nitriding catalyst in ammonia atmosphere. The phase composition and microstructure of CrN UF membranes were characterized by X-ray diffraction and field-emission scanning electron microscopy with energy-dispersive X-ray spectroscopy. The effects of TiO2 and sintering parameters on the crystalline phase and pore size of CrN UF membranes were investigated. The results identified Ti4+ as a key factor influencing the transformation of the Cr2O3 phase into the CrN phase. The as-prepared CrN membranes exhibited enhanced hydrophilicity, no cracks or pinholes, water flux of 121 L·m−2h−1 bar−1, and a molecular weight cut-off of 1500 Da. The membranes also had retention rates of 100% for methyl blue (50 ppm) and 90% for methylene blue (50 ppm), which almost remained constant under repeated use.http://www.sciencedirect.com/science/article/pii/S0264127521002227Ultrafiltration membraneChromium nitrideCatalytic reactionSintering |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Qi Yan Jinquan Sun Yanpeng Xue Guopeng Zhao Tingting Liu Xiaohong Liu Qingkun He Kun Xie |
| spellingShingle |
Qi Yan Jinquan Sun Yanpeng Xue Guopeng Zhao Tingting Liu Xiaohong Liu Qingkun He Kun Xie High-performance CrN tight ultrafiltration membranes prepared by in situ gas–solid catalytic reaction Materials & Design Ultrafiltration membrane Chromium nitride Catalytic reaction Sintering |
| author_facet |
Qi Yan Jinquan Sun Yanpeng Xue Guopeng Zhao Tingting Liu Xiaohong Liu Qingkun He Kun Xie |
| author_sort |
Qi Yan |
| title |
High-performance CrN tight ultrafiltration membranes prepared by in situ gas–solid catalytic reaction |
| title_short |
High-performance CrN tight ultrafiltration membranes prepared by in situ gas–solid catalytic reaction |
| title_full |
High-performance CrN tight ultrafiltration membranes prepared by in situ gas–solid catalytic reaction |
| title_fullStr |
High-performance CrN tight ultrafiltration membranes prepared by in situ gas–solid catalytic reaction |
| title_full_unstemmed |
High-performance CrN tight ultrafiltration membranes prepared by in situ gas–solid catalytic reaction |
| title_sort |
high-performance crn tight ultrafiltration membranes prepared by in situ gas–solid catalytic reaction |
| publisher |
Elsevier |
| series |
Materials & Design |
| issn |
0264-1275 |
| publishDate |
2021-06-01 |
| description |
To expand the industrial application of membranes, high-performance CrN tight ultrafiltration membranes (UF) were prepared by in situ gas–solid reaction using Cr2O3 as a nanoprecursor and TiO2 as a nitriding catalyst in ammonia atmosphere. The phase composition and microstructure of CrN UF membranes were characterized by X-ray diffraction and field-emission scanning electron microscopy with energy-dispersive X-ray spectroscopy. The effects of TiO2 and sintering parameters on the crystalline phase and pore size of CrN UF membranes were investigated. The results identified Ti4+ as a key factor influencing the transformation of the Cr2O3 phase into the CrN phase. The as-prepared CrN membranes exhibited enhanced hydrophilicity, no cracks or pinholes, water flux of 121 L·m−2h−1 bar−1, and a molecular weight cut-off of 1500 Da. The membranes also had retention rates of 100% for methyl blue (50 ppm) and 90% for methylene blue (50 ppm), which almost remained constant under repeated use. |
| topic |
Ultrafiltration membrane Chromium nitride Catalytic reaction Sintering |
| url |
http://www.sciencedirect.com/science/article/pii/S0264127521002227 |
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