本文採用離子插層法來獲得二硫化鉬奈米片。將塊狀的二硫化鉬浸泡在正丁基鋰，配合超音波嵌入鋰離子進入塊狀二硫化鉬的層間來獲得嵌入鋰離子的二流化鉬複合物。最後將複合物加入去離子水打超音波製備出二硫化鉬奈米片懸浮液。配置鐵離子水溶液加入二硫化鉬奈米片懸浮液裡，打破懸浮液裡的庫倫力平衡，產生鐵摻雜二硫化鉬。藉由二硫化鉬奈米片懸浮液於紫外光可見光波長段的吸收度獲得二硫化鉬奈米片懸浮液於紫外光可見光波長段的吸收度光譜，確認離子插層法產生的二硫化鉬奈米片的相位。量測X光吸收光譜，從XANES圖譜確認鐵摻雜二硫化鉬中鐵是否有氧化以及鐵的價態。從EXAFS圖譜與參考文獻中DFT理論計算的吸附模型進行擬和，比較不同濃度二硫化鉬奈米片懸浮液產生的鐵摻雜二硫化鉬中鐵的吸附傾向。利用不同層數中A1g和E¬12g波峰隨著層數變化的特性，拉曼光譜決定鐵摻雜二硫化鉬樣品的層數藉由A1g和E¬12g波峰所對應頻率的差值。

We have used ion intercalation method to prepare MoS2 nanosheets. Bulk MoS2 was soaked in BuLi, intercalating lithium into the interlayers of bulk MoS2 by sonication to generate LixMoS2. The LixMoS2 was then put into DI water with sonication to produce MoS2 nanosheets suspension. Next, FeCl2·4H2O solution was made and added to the MoS2 nanosheets suspension, breaking the Coulomb balance of the MoS2 nanosheets suspension to form Fe-doped MoS2. The phase of MoS2 nanosheets prepared by the ion intercalation was determined by UV-vis absorbance measurements. The XANES spectra was used to determine the oxidation state and valence of Fe in Fe-doped MoS2. Different adsorption models proposed in previously reported DFT calculations were used in the curve-fitting of our EXAFS data so as to assign different Fe adsorption types to Fe-doped MoS2 samples prepared using different MoS2 nanosheets suspension. Raman spectroscopy was used to determine the number of layers of the Fe-doped MoS2 samples based on the difference between frequencies of A1g and E12g peaks.

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