有鑑於全球暖化與能源短缺的問題，使用太陽能做為催化水產氫反應，以提供氫能來源，為開發再生能源之重點研究，硫化銀-硫化鋅奈米異質結構為一適合應用在光催化反應的材料，有許多文獻曾研究過不同形貌的硫化銀-硫化鋅奈米異質結構，唯火柴棒結構鮮有文獻探討，本篇研究以一鍋反應熱裂解法製備之硫化銀-硫化鋅奈米粒子，可藉著調整鋅前驅物的莫爾數比，達到改變粒子長度的作用。因為硫化銀-硫化鋅奈米異質結構具良好的電荷轉移能力，所以我們想應用在光催化水產氫反應上，並探討其因為銀/鋅比而造成的長度差異是否會影響其能帶結構的變化，並影響電荷轉移能力，進而造成不同的光催化效率。

Ag2S-ZnS nanocomposite is suitable for photocatalyse the Hydrogen Evolution Reation(HER)，there are many previous studies discussing the Ag2S-ZnS nanocomposite with different morphologies，though there are few papers talking about the matchstick-like Ag2S-ZnS nanocomposite. The current study of the topic is to synthesize Ag2S-ZnS nanocomposite with one-pot thermo-deomposition method . And it’s possible for us to change the particle size by adjusting the molar ratio of zinc precursor.
Due to the superior charge transfer ability of the Ag2S-ZnS nanocomposite, we wanted to apply this material on the photocatalysis of HER. We also wanted to test if the differences of the length of the NPs would affect the band structure, the ability of charge transfer and interfere the HER efficiency.

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