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| 氧化银微纳米粉体的制备研究 |
| Study on the preparation of Ag2O micro-nano powder |
| Received:July 26, 2021 |
| DOI： |
| 中文关键词: 氧化银 微纳米粉体 化学合成法 制备 |
| 英文关键词: Ag2O micro-nano powder chemical synthesis method preparation |
| 基金项目:陕西省重点研发计划项目(2020GY-254) |
| Author Name | Affiliation | E-mail | | CHEN Kun-kun* | Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China | chenk_007@163.com | | ZHENG Jing* | Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China | | | DANG Rui* | Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China | | | ZHANG Bo-sheng* | Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China | | | YANG Yang* | Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China | |
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| 中文摘要: |
| 为制得形貌和粒径均匀的氧化银(Ag2O)微纳米粉体，对比研究了氧化银的3种化学合成法。结果表明，采用常规方法可制备出类球形氧化银，添加剂PVP不改变氧化银粉体形貌，但可减小其粒径，氧化银产率为100%；采用铵盐络合法可制备出正八面体和削角八面体的氧化银粉体，且粒径均匀(平均粒径为1~2μm)，氧化银产率为100%；采用氨水络合法可制备出八面体、削角八面体、类球形、六足体、正方体的氧化银粉体，随AgNO3:NH3·H2O摩尔比增大，氧化银粉体粒径增大，氧化银产率降低，为提高氧化银产率，可增大NaOH摩尔占比，所得氧化银粉体其物相为立方晶系氧化银且无其他杂质相。 |
| 英文摘要: |
| In order to obtain Ag2O micro-nano powders with uniform morphology and particle size, three chemical synthesis methods of silver oxide were compared and studied. The results show that spherical Ag2O can be prepared by conventional methods. The addition of PVP does not change the morphology of Ag2O powder, but reduces its particle size, and the yield of Ag2O is 100%. The ammonium salt complexation method can be used to prepare regularoctahedron and truncated octahedron Ag2O powders with uniform particle size, and its average particle size is 1~2 μm, and the yield of Ag2O is 100%. Octahedral, truncated octahedral, spherical like, hexapod and cubic Ag2O powders can be obtained by the ammonia complexation method. As the molar ratio of AgNO3: NH3·H2O increases, the particle size of Ag2O powder increases but the yield of Ag2O decreases. In order to improve the yield of Ag2O, the molar ratio of NaOH can be increased, and the phase of the obtained Ag2O powder is cubic silver oxide without other impurity phases. |
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