Silicon nanowire-based energetic materials with significantly improved hygroscopicity
The large energy release potential and highly adjustable combustion characteristics of nanostructured silicon compounded with sodium perchlorate (NaClO4) make it one of the most attractive inorganic energetic materials. Compared with nanoporous silicon, the silicon nanowires prepared by metal-assist...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co. Ltd.
2021-06-01
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| Series: | Energetic Materials Frontiers |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666647221000269 |
| _version_ | 1797936370364186624 |
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| author | Rong-rong Yang Chang-kun Song Ya-jie Chen Guo-wei Zeng Jia-xin Wang Jun-hong Chen Wen-chao Zhang |
| author_facet | Rong-rong Yang Chang-kun Song Ya-jie Chen Guo-wei Zeng Jia-xin Wang Jun-hong Chen Wen-chao Zhang |
| author_sort | Rong-rong Yang |
| collection | DOAJ |
| description | The large energy release potential and highly adjustable combustion characteristics of nanostructured silicon compounded with sodium perchlorate (NaClO4) make it one of the most attractive inorganic energetic materials. Compared with nanoporous silicon, the silicon nanowires prepared by metal-assisted chemical etching are easily loaded with NaClO4 to obtain energetic materials, due to their one-dimensional array structure and tight contact with the silicon substrate. However, the high hygroscopicity of NaClO4 greatly degrades the long-term storage property of the material, and must be addressed. In this study, sulfur, as a known stable and non-hygroscopic oxidant that reacts with nanostructured silicon, was impregnated on the silicon nanowires/NaClO4 energetic material to insulate NaClO4 from H2O in the ambient air. After sulfur impregnation, the mass of the sample increased by 8.7 mg after being exposed to 98% relative humidity at 25 °C for 12 h, while the sample without sulfur increased by 50 mg, indicating significant improvement in the hygrophobicity of the sulfur-containing energetic material. Laser ignition experiments showed that the combustion performance was only slightly affected after sulfur treatment. This work provides a new strategy for improving the hygrophobicity of silicon-based energetic materials, which can improve their applicability in micro-electromechanical systems. |
| first_indexed | 2024-04-10T18:28:45Z |
| format | Article |
| id | doaj.art-539e8438d7d44ac4a6ae41941f6cac08 |
| institution | Directory Open Access Journal |
| issn | 2666-6472 |
| language | English |
| last_indexed | 2024-04-10T18:28:45Z |
| publishDate | 2021-06-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Energetic Materials Frontiers |
| spelling | doaj.art-539e8438d7d44ac4a6ae41941f6cac082023-02-02T04:50:06ZengKeAi Communications Co. Ltd.Energetic Materials Frontiers2666-64722021-06-0122105110Silicon nanowire-based energetic materials with significantly improved hygroscopicityRong-rong Yang0Chang-kun Song1Ya-jie Chen2Guo-wei Zeng3Jia-xin Wang4Jun-hong Chen5Wen-chao Zhang6School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Micro-Nano Energetic Devices Key Laboratory, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Micro-Nano Energetic Devices Key Laboratory, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Micro-Nano Energetic Devices Key Laboratory, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Micro-Nano Energetic Devices Key Laboratory, Ministry of Industry and Information Technology, Nanjing, 210094, China; Shanghai Aerospace Institute of Applied Chemical Engineering, Huzhou, 313002, China; Corresponding author. School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Micro-Nano Energetic Devices Key Laboratory, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Micro-Nano Energetic Devices Key Laboratory, Ministry of Industry and Information Technology, Nanjing, 210094, ChinaSchool of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China; Micro-Nano Energetic Devices Key Laboratory, Ministry of Industry and Information Technology, Nanjing, 210094, China; Corresponding author. School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.The large energy release potential and highly adjustable combustion characteristics of nanostructured silicon compounded with sodium perchlorate (NaClO4) make it one of the most attractive inorganic energetic materials. Compared with nanoporous silicon, the silicon nanowires prepared by metal-assisted chemical etching are easily loaded with NaClO4 to obtain energetic materials, due to their one-dimensional array structure and tight contact with the silicon substrate. However, the high hygroscopicity of NaClO4 greatly degrades the long-term storage property of the material, and must be addressed. In this study, sulfur, as a known stable and non-hygroscopic oxidant that reacts with nanostructured silicon, was impregnated on the silicon nanowires/NaClO4 energetic material to insulate NaClO4 from H2O in the ambient air. After sulfur impregnation, the mass of the sample increased by 8.7 mg after being exposed to 98% relative humidity at 25 °C for 12 h, while the sample without sulfur increased by 50 mg, indicating significant improvement in the hygrophobicity of the sulfur-containing energetic material. Laser ignition experiments showed that the combustion performance was only slightly affected after sulfur treatment. This work provides a new strategy for improving the hygrophobicity of silicon-based energetic materials, which can improve their applicability in micro-electromechanical systems.http://www.sciencedirect.com/science/article/pii/S2666647221000269Nanoenergetic materialSilicon nanowireHygroscopicityStabilityVacuum differential pressure |
| spellingShingle | Rong-rong Yang Chang-kun Song Ya-jie Chen Guo-wei Zeng Jia-xin Wang Jun-hong Chen Wen-chao Zhang Silicon nanowire-based energetic materials with significantly improved hygroscopicity Energetic Materials Frontiers Nanoenergetic material Silicon nanowire Hygroscopicity Stability Vacuum differential pressure |
| title | Silicon nanowire-based energetic materials with significantly improved hygroscopicity |
| title_full | Silicon nanowire-based energetic materials with significantly improved hygroscopicity |
| title_fullStr | Silicon nanowire-based energetic materials with significantly improved hygroscopicity |
| title_full_unstemmed | Silicon nanowire-based energetic materials with significantly improved hygroscopicity |
| title_short | Silicon nanowire-based energetic materials with significantly improved hygroscopicity |
| title_sort | silicon nanowire based energetic materials with significantly improved hygroscopicity |
| topic | Nanoenergetic material Silicon nanowire Hygroscopicity Stability Vacuum differential pressure |
| url | http://www.sciencedirect.com/science/article/pii/S2666647221000269 |
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