| 矿化剂浓度对水热法合成氧化锌晶体的影响 |
| Effect of Mineralizer Concetration on ZnO Crystals Synthesized by Hydrothermal Method |
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| 摘要: |
| 关键词: 氧化锌 水热合成 矿化剂 晶体形态 |
| 基金项目: |
| Abstract: In this paper different shapes of ZnO crystals were synthesized by hydrothermal method when different con-centrations of mineralizer were used. When KOH was less than 2mol·L-1 and the fill factor was approximately 35% at 350℃, ZnO crystals were synthesized with size of several hundred nanometer or several micron. The shapes of crystals were hexagonal cones. When 3mol·L-1 KOH was used as mineralize at 350℃ and the fill factor was approximately 35%, the crystals with many different sizes were synthesized, the size of maximal crystal was over 100 micron, the small-size crystals were only several micron. When mineralizer KOH was less than 1mol·L-1 and the fill factor was approximately 35% at 430℃, ZnO crystals were synthesized with size of several hundred nanometer or several micron. The shapes of crystals were hexagonal cones. When 1.5mol·L-1 KOH or 2mol·L-1 KOH was used as mineralize at 430℃ and the fill factor was approximately 35%, the high quality and hexagonal prism crystals were synthesized with many different sizes, the size of maximal crystal was over 100 mi-cron, the small-size crystal was only several micron. Especially when 3mol·L-1 KOH was used as mineralize at 430℃ and the fill factor was approximately 35%, the high quality and hexagonal prism crystals were synthesized with size of 1mm along c axis. The exposed faces were hexagonal faces m{1010}, hexagonal cone faces p{1011}, negative polar faces O{0001}. In addition, many crystals with the shape of hexagonal cone and in several micron to 50 μm of size were present. The exposed faces were hexagonal cone faces p{1011}, negative polar faces {0001}. |
| Keywords: ZnO hydrothermal synthesis mineralize crystal shape |
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| 摘要点击次数: 1315 |
| 全文下载次数: 1997 |
| 韦志仁,董国义,王立明,李志强,张华伟.矿化剂浓度对水热法合成氧化锌晶体的影响[J].无机化学学报,2003,19(9):950-954. |
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