Effect of MWNTs on Photocatalytic Performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub>
MWNTs/Fe<sub>2</sub>O<sub>3</sub> was prepared by chemical liquid-deposition process, and unsymmetrical dimethylhydrazine (UDMH) wastewater was chosen as targets to evaluate the photocatalytic performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub>. Mechanism...
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| Format: | Article |
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Journal of Materials Engineering
2018-09-01
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| Series: | Cailiao gongcheng |
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| Online Access: | http://jme.biam.ac.cn/CN/Y2018/V46/I9/46 |
| _version_ | 1797966237322444800 |
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| author | LI Jun LIU Xiang-xuan CHAI Yun LIU Yuan ZHANG Lang-lang |
| author_facet | LI Jun LIU Xiang-xuan CHAI Yun LIU Yuan ZHANG Lang-lang |
| author_sort | LI Jun |
| collection | DOAJ |
| description | MWNTs/Fe<sub>2</sub>O<sub>3</sub> was prepared by chemical liquid-deposition process, and unsymmetrical dimethylhydrazine (UDMH) wastewater was chosen as targets to evaluate the photocatalytic performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub>. Mechanism of MWNTs in MWNTs/Fe<sub>2</sub>O<sub>3</sub> composites was investigated by XRD, TEM, UV-vis,FTIR, TG-DSC and Raman spectra. The results demonstrate that MWNTs will influence the absorbability and the ability of photocatalysis of Fe<sub>2</sub>O<sub>3</sub>. When the mass ratio between MWNTs and Fe<sub>2</sub>O<sub>3</sub> is 1:2, the decomposition efficiency of Fe<sub>2</sub>O<sub>3</sub> photocatalysis for UDMH will be increased effectively. There is a quantitative relationship between the amount of MWNTs and the crystal type of Fe<sub>2</sub>O<sub>3</sub>. When the mass ratio between MWNTs and Fe<sub>2</sub>O<sub>3</sub> is higher than 5:1, Fe<sub>2</sub>O<sub>3</sub> will be transformed from α to <i>γ</i>. The introduction of MWNTs has broad the light effect of Fe<sub>2</sub>O<sub>3</sub>. The close connection between MWNTs and Fe<sub>2</sub>O<sub>3</sub> form a positive interaction and a strong combination, during which they also produce a chemical bond of Fe-O-C. Under the light, MWNTs will work as a photosensitizer and transform electrons to the Fe<sub>2</sub>O<sub>3</sub> through Fe-O-C, which reduce the possibility of electron-hole pairs recombination and increase the efficiency of photocatalysis. |
| first_indexed | 2024-04-11T02:12:33Z |
| format | Article |
| id | doaj.art-2173512c42e04e52aa54ffe13567da99 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:12:33Z |
| publishDate | 2018-09-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-2173512c42e04e52aa54ffe13567da992023-01-03T01:48:59ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812018-09-01469465210.11868/j.issn.1001-4381.2016.001105201809001105Effect of MWNTs on Photocatalytic Performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub>LI Jun0LIU Xiang-xuan1CHAI Yun2LIU Yuan3ZHANG Lang-lang4The 603 department, Rocket Force University of Engineering, Xi'an 710025, ChinaThe 603 department, Rocket Force University of Engineering, Xi'an 710025, ChinaThe 603 department, Rocket Force University of Engineering, Xi'an 710025, ChinaThe 603 department, Rocket Force University of Engineering, Xi'an 710025, ChinaThe 603 department, Rocket Force University of Engineering, Xi'an 710025, ChinaMWNTs/Fe<sub>2</sub>O<sub>3</sub> was prepared by chemical liquid-deposition process, and unsymmetrical dimethylhydrazine (UDMH) wastewater was chosen as targets to evaluate the photocatalytic performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub>. Mechanism of MWNTs in MWNTs/Fe<sub>2</sub>O<sub>3</sub> composites was investigated by XRD, TEM, UV-vis,FTIR, TG-DSC and Raman spectra. The results demonstrate that MWNTs will influence the absorbability and the ability of photocatalysis of Fe<sub>2</sub>O<sub>3</sub>. When the mass ratio between MWNTs and Fe<sub>2</sub>O<sub>3</sub> is 1:2, the decomposition efficiency of Fe<sub>2</sub>O<sub>3</sub> photocatalysis for UDMH will be increased effectively. There is a quantitative relationship between the amount of MWNTs and the crystal type of Fe<sub>2</sub>O<sub>3</sub>. When the mass ratio between MWNTs and Fe<sub>2</sub>O<sub>3</sub> is higher than 5:1, Fe<sub>2</sub>O<sub>3</sub> will be transformed from α to <i>γ</i>. The introduction of MWNTs has broad the light effect of Fe<sub>2</sub>O<sub>3</sub>. The close connection between MWNTs and Fe<sub>2</sub>O<sub>3</sub> form a positive interaction and a strong combination, during which they also produce a chemical bond of Fe-O-C. Under the light, MWNTs will work as a photosensitizer and transform electrons to the Fe<sub>2</sub>O<sub>3</sub> through Fe-O-C, which reduce the possibility of electron-hole pairs recombination and increase the efficiency of photocatalysis.http://jme.biam.ac.cn/CN/Y2018/V46/I9/46chemical liquid-deposition processMWNTsFe<sub>2</sub>O<sub>3</sub>photocatalyticcrystal type |
| spellingShingle | LI Jun LIU Xiang-xuan CHAI Yun LIU Yuan ZHANG Lang-lang Effect of MWNTs on Photocatalytic Performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub> Cailiao gongcheng chemical liquid-deposition process MWNTs Fe<sub>2</sub>O<sub>3</sub> photocatalytic crystal type |
| title | Effect of MWNTs on Photocatalytic Performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub> |
| title_full | Effect of MWNTs on Photocatalytic Performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub> |
| title_fullStr | Effect of MWNTs on Photocatalytic Performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub> |
| title_full_unstemmed | Effect of MWNTs on Photocatalytic Performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub> |
| title_short | Effect of MWNTs on Photocatalytic Performance of MWNTs/Fe<sub>2</sub>O<sub>3</sub> |
| title_sort | effect of mwnts on photocatalytic performance of mwnts fe sub 2 sub o sub 3 sub |
| topic | chemical liquid-deposition process MWNTs Fe<sub>2</sub>O<sub>3</sub> photocatalytic crystal type |
| url | http://jme.biam.ac.cn/CN/Y2018/V46/I9/46 |
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