本研究以溶熱法製備出高純度之釩摻雜於矽酸鋯 ( V : ZrSiO4 ) 粉末。粉末製備主要以兩種方法進行，分別在溶熱反應前有無膠溶作用處理。方法一在不進行膠溶作用情況下，探討溶劑種類對矽酸鋯粉末合成影響。為了進一步控制粉末形貌及大小，因此利用方法二，探討於溶熱反應前，加入HCl進行膠溶處理，對於溶熱反應後產物性質影響，其合成產物之結晶相、形貌分別由XRD、SEM儀器分析觀察。此外探討HCl於溶熱反應中之影響及其用途。在獲得適當反應參數之後，將釩離子摻雜於矽酸鋯晶體結構中，藉由EDS、XRF及ICP分析溶熱過程中釩離子進入結構中的情形，並使用XPS判斷矽酸鋯晶體中釩離子的價數狀態與百分比例。最後將以溶熱法與溶膠凝膠法製得產物，經由1200 ˚C熱處理時間為2小時，比較兩種製程產物之性質差異。以溶熱法製備V：ZrSiO4粉末具有高純度優勢，未來能有效取代溶膠凝膠法並應用作為高溫釉料之用。

High purity of vanadium-doped zirconium silicate (ZrSiO4) powders were prepared via solvothermal method. Disk-like ZrSiO4 submicron-scaled single crystals were formed when using 1 M of HCl as mineralizer; whereas nanoparticles particles were obtained by using 3 M of HNO3 as mineralizer. The doping limit and the valence of vanadium ions in the ZrSiO4 structure were detected by EDS and XPS analyses. The doped vanadium appeared both V4+ and V5+. As HNO3 participate in the reaction, the content of vanadium and V5+ increased in ZrSiO4 structure. The doped V5+ turned V4+ after doing heat treatment at 1200 ˚C for 2 h. V4+ doped ZrSiO4 blue powders were obtained had high purity.

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