製備
碲化鋅的製備方法和硒化鋅類似,有干法和濕法兩種。干法是將單質碲和鋅在氫氣氣氛中加熱(如果在空氣中反應,則會氧化),產物升華,得到紅棕色的碲化鋅[2]:
- Zn + Te → ZnTe
濕法是用碲化鈉和乙酸鋅在水溶液中反應,產物是黃棕色的水合物沉澱:
- Na2Te + Zn(CH3COO)2 → 2 CH3COONa + ZnTe(水合)↓
化學性質
碲化鋅遇到酸放出劇毒的H2Te氣體:
- ZnTe + 2 H+ → Zn2+ + H2Te↑
碲化鋅可以被空氣中的氧氣氧化,反應條件不同,產物不同:
- 2 ZnTe + O2 → 2 ZnO + 2 Te
- 2 ZnTe + 3 O2 → 2 ZnO + 2 TeO2
參考資料
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