先進高熵電催化劑在水處理中的開發之氨分解和氫生產;Development of Advanced High-Entropy Electro-Catalysts for Water Treatment: Ammonia Decomposition and Hydrogen Production

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Title:	先進高熵電催化劑在水處理中的開發之氨分解和氫生產;Development of Advanced High-Entropy Electro-Catalysts for Water Treatment: Ammonia Decomposition and Hydrogen Production
Authors:	余美齡;Yu, Mei-Ling
Contributors:	材料科學與工程研究所
Keywords:	高熵催化;氨分解;電催化;污染物降解;氫氣生產;High-entropy catalysis;ammonia decomposition;electrocatalysis;pollutant degradation;hydrogen production
Date:	2024-07-29
Issue Date:	2024-10-09 15:43:52 (UTC+8)
Publisher:	國立中央大學
Abstract:	水資源是當代一個關鍵性的全球性議題，尤其是污水引起的污染已成為亟需解決的緊迫問題。儘管可以通過分解污水中的氨（NH3）並回收殘留物來生產可用的淡水，但目前的最新催化氨分解技術在連續反應過程中存在穩定性方面的挑戰。在催化氨水中本研究通過快速煆燒和還原工藝開發了一種新型的高熵陶瓷（High-Entropy Ceramics, HEC）FeCoNiCuMn粉體。利用電化學氧化（electrochemical oxidation method, EO）方法催化氨溶液，以HEC作為催化劑的電極，能夠在90分鐘內分解溶液中的99%氨，並具有良好的重複反應穩定性。此外，為了深入分析催化效果，本實驗研究了在不同定電流下的降解效率，並且在50mA定電流下表現出良好的降解性能，分解溶液中的99%氨。同時，我們也進行了對同一片高熵電極的重複降解實驗，並在同一片電極上重複四次分解反應，在第四次時催化劑仍能分解溶液中的90%氨。此外，我們在反應過程中同時產生氫氣，突顯了這種新型HECs催化劑在綠色能源領域中的應用前景。;Water resource is one of the critical, worldwide issue in the contemporary era, especially the pollution caused by wastewater, has become an urgent problem need to be addressed. Although usable freshwater can be produced by decomposing the ammonia (NH3) in wastewater and recycling the residue, the current state-of-the-art catalytic decomposition of NH3 faces challenges regarding the stability during continuous reaction. In this study, a novel high-entropy ceramics (HECs) catalyst for water purification is developed, which can be fabricated via rapid calcination and reduction methods. Leveraging the electrochemical oxidation (EO) method to catalyze the ammonia solution, these HECs are able to decompose 99% of ammonia in the solution within 90 minutes. Even after 4 cycles, the electrode maintained high efficiency, degrading 90% of ammonia in 90 minutes, showcasing its stability. Additionally, the simultaneous production of hydrogen during the reaction highlights the promising application of this novel HECs catalyst in the green energy field.
Appears in Collections:	[Institute of Materials Science and Engineering] Electronic Thesis & Dissertation

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