聚磺酸苯乙烯對銦錫氧化物奈米粒子之製備、形態以及性質之影響

Effect of Poly (styrene sulfonic acid) on Preparation, Morphology and Properties of Indium Tin Oxide Nanoparticles

薛玫玲(May-Ling Shuwei)

指導教授 ： 張朝欽

淡江大學/工學院/化學工程與材料工程學系碩士班/碩士(2010年)

https://doi.org/10.6846/TKU.2010.00496

摘要

本研究藉由共沉澱法來製備銦錫氧化物 (ITO) 奈米粒子，選用的起始材料為硝酸銦 (In(NO3)3) 以及氯化錫 (SnCl4)，沉澱劑採用氨水 (NH4OH)。過往之研究中指出某些聚電解質高分子可提供一有效之途徑來改變奈米粒子形態。因此在本實驗中選用陰離子型聚電解質高分子 poly(styrene sulfonic acid) (PSS) 來作為 ITO 奈米粒子表面形態之生長導向劑，經由調控 PSS 上磺酸基離子化的程度以及 PSS 的濃度來探討 ITO 奈米粒子之表面形態的變化。
由實驗結果顯示，當固定 SO3H/In 的莫耳比 (1/10)，改變三乙醇胺的添加量 (0 ~ 6 ml)時，ITO precursor 奈米粒子的形態會隨著 pH 值而變化，由球狀粒子變為部分球狀部分方塊狀，當 pH 值到達11.53時粒子形成約長500~800 nm、寬100 nm以及厚度約為5~10 nm的片狀粒子。而當固定 pH 值，改變 SO3H/In 的莫耳比 (0.5/10、1/10、2/10、5/10以及 10/10) 時，粒子之形態會從桿狀變成由約2 nm的小粒子結合在一起形成約30~50 nm的粒子，所製備的 ITO precursor 奈米粒子在經500 °C高溫煆燒後均形成 ITO 奈米粒子。

關鍵字

銦錫氧化物 ； 聚電解質高分子 ； 聚磺酸苯乙烯

並列摘要

This study utilized the co-precipitation method to prepare ITO nanoparticles, the starting materials were indium nitrate, tin chloride, and ammonium hydroxide. The previous research showed that polyelectrolytes can offer an effective route to alter morphologies of nanoparticles, hence an anionic polyelectrolyte, poly (styrene sulfonic acid) (PSS), was used a structure-directing agent to prepare ITO nanoparticles. Various morphologies of ITO nanoparticles via adjusting the ionization degree of sulfonic acid and the concentration of PSS were observed.
The results indicated that when the molar ratio of SO3H/In was fixed (1/10) and the value of triethanolamine was changed (0~6 ml) ITO precursor nanoparticles varied from nanospheres to nanocubes. As the pH value was equal to 11.53, ITO precursor nanoparticles became nanosheets, which length, width and thickness are 500 ~ 800 nm, 100 nm, and 5 ~ 10 nm, respectively. However, while the value of pH was fixed (pH=11.53) and molar ratios of SO3H/In were varied (0.5/10, 1/10, 2/10, 5/10 and 10/10), the ITO precursor nanoparticles changed from nanosheets to nanoparticles. The prepared ITO precursor nanoparticles formed the ITO nanoparticles through calcined at 500°C.

並列關鍵字

indium tin oxide (ITO) ； polyelectrolyte ； nanosheet ； poly (styrene sulfonic acid)

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