Growing and Etching MoS2 on Carbon Nanotube Film for Enhanced Electrochemical Performance
In this work we directly synthesized molybdenum disulfide (MoS2) nanosheets on carbon nanotube film (MoS2@CNT) via a two-step chemical vapor deposition method (CVD). By etching the obtained MoS2@CNT into 10% wt HNO3, the morphology of MoS2 decorated on CNT bundles was modulated, resulting in more ca...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2016-09-01
|
| Series: | Molecules |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1420-3049/21/10/1318 |
| _version_ | 1819238960073801728 |
|---|---|
| author | Weiyu Xu Qi Fang Daobin Liu Ke Zhang Muhammad Habib Chuanqiang Wu Xusheng Zheng Hengjie Liu Shuangming Chen Li Song |
| author_facet | Weiyu Xu Qi Fang Daobin Liu Ke Zhang Muhammad Habib Chuanqiang Wu Xusheng Zheng Hengjie Liu Shuangming Chen Li Song |
| author_sort | Weiyu Xu |
| collection | DOAJ |
| description | In this work we directly synthesized molybdenum disulfide (MoS2) nanosheets on carbon nanotube film (MoS2@CNT) via a two-step chemical vapor deposition method (CVD). By etching the obtained MoS2@CNT into 10% wt HNO3, the morphology of MoS2 decorated on CNT bundles was modulated, resulting in more catalytic active MoS2 edges being exposed for significantly enhanced electrochemical performance. Our results revealed that an 8 h acid etching sample exhibited the best performance for the oxygen evolution reaction, i.e., the current density reached 10 mA/cm2 under 375 mV over-potential, and the tafel slope was as low as 94 mV/dec. The enhanced behavior was mainly originated from the more catalytic sites in MoS2 induced by the acid etching treatment and the higher conductivity from the supporting CNT films. Our study provides a new route to produce two-dimensional layers on CNT films with tunable morphology, and thus may open a window for exploring its promising applications in the fields of catalytic-, electronic-, and electrochemical-related fields. |
| first_indexed | 2024-12-23T13:44:31Z |
| format | Article |
| id | doaj.art-3b6939da3f214c5cb7bab2de239ea9c7 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-12-23T13:44:31Z |
| publishDate | 2016-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-3b6939da3f214c5cb7bab2de239ea9c72022-12-21T17:44:45ZengMDPI AGMolecules1420-30492016-09-012110131810.3390/molecules21101318molecules21101318Growing and Etching MoS2 on Carbon Nanotube Film for Enhanced Electrochemical PerformanceWeiyu Xu0Qi Fang1Daobin Liu2Ke Zhang3Muhammad Habib4Chuanqiang Wu5Xusheng Zheng6Hengjie Liu7Shuangming Chen8Li Song9National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaNational Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei 230029, ChinaIn this work we directly synthesized molybdenum disulfide (MoS2) nanosheets on carbon nanotube film (MoS2@CNT) via a two-step chemical vapor deposition method (CVD). By etching the obtained MoS2@CNT into 10% wt HNO3, the morphology of MoS2 decorated on CNT bundles was modulated, resulting in more catalytic active MoS2 edges being exposed for significantly enhanced electrochemical performance. Our results revealed that an 8 h acid etching sample exhibited the best performance for the oxygen evolution reaction, i.e., the current density reached 10 mA/cm2 under 375 mV over-potential, and the tafel slope was as low as 94 mV/dec. The enhanced behavior was mainly originated from the more catalytic sites in MoS2 induced by the acid etching treatment and the higher conductivity from the supporting CNT films. Our study provides a new route to produce two-dimensional layers on CNT films with tunable morphology, and thus may open a window for exploring its promising applications in the fields of catalytic-, electronic-, and electrochemical-related fields.http://www.mdpi.com/1420-3049/21/10/1318carbon nanotubemolybdenum disulfideCVDacid etchingelectrochemical performance |
| spellingShingle | Weiyu Xu Qi Fang Daobin Liu Ke Zhang Muhammad Habib Chuanqiang Wu Xusheng Zheng Hengjie Liu Shuangming Chen Li Song Growing and Etching MoS2 on Carbon Nanotube Film for Enhanced Electrochemical Performance Molecules carbon nanotube molybdenum disulfide CVD acid etching electrochemical performance |
| title | Growing and Etching MoS2 on Carbon Nanotube Film for Enhanced Electrochemical Performance |
| title_full | Growing and Etching MoS2 on Carbon Nanotube Film for Enhanced Electrochemical Performance |
| title_fullStr | Growing and Etching MoS2 on Carbon Nanotube Film for Enhanced Electrochemical Performance |
| title_full_unstemmed | Growing and Etching MoS2 on Carbon Nanotube Film for Enhanced Electrochemical Performance |
| title_short | Growing and Etching MoS2 on Carbon Nanotube Film for Enhanced Electrochemical Performance |
| title_sort | growing and etching mos2 on carbon nanotube film for enhanced electrochemical performance |
| topic | carbon nanotube molybdenum disulfide CVD acid etching electrochemical performance |
| url | http://www.mdpi.com/1420-3049/21/10/1318 |
| work_keys_str_mv | AT weiyuxu growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT qifang growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT daobinliu growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT kezhang growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT muhammadhabib growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT chuanqiangwu growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT xushengzheng growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT hengjieliu growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT shuangmingchen growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance AT lisong growingandetchingmos2oncarbonnanotubefilmforenhancedelectrochemicalperformance |