此技術為了改善傳統 #哈柏法 的高能耗與碳排放問題，提出以「焦耳加熱法（Joule heating）」快速合成均勻銅基雙金屬 #催化劑（CuNi、CuFe、CuPd），有效提升硝酸鹽（NO₃⁻）在 #電化學反應 中還原為銨離子（NH₄⁺）的效率。該方法能在僅數秒內完成高溫分解與快速冷卻，形成粒徑小、分散均勻的合金奈米催化劑。研究顯示，CuNi 催化劑展現出最佳效能，具有高達 98% 的 銨選擇性 與 49% 的銨產率，遠勝單一金屬 Cu 催化劑。
更重要的是，該方法不僅解決了含硝酸鹽廢水污染問題，還能產出具價值的氨，成功實現「污染源→再生資源」的轉換，為 #循環經濟（Circular Economy）提供一種兼具高效率與永續性的路徑。
發表期刊：Separation
and Purification Technology
DOI: https://doi.org/10.1016/j.seppur.2025.133312
Led
by Prof. Jenn Fang Su of our center, this collaborative research with the
Industrial University of Ho Chi Minh City (#Vietnam) and Universiti Malaysia Pahang (#Malaysia) demonstrates the power of cross-border
scientific collaboration in advancing green energy technologies.
To address the high energy consumption and carbon emissions of the
traditional Haber-Bosch process, the team developed a Joule heating method to
rapidly synthesize homogeneous copper-based bimetallic catalysts (CuNi, CuFe,
CuPd). This ultra-fast method—completed in just seconds—uses high-temperature
decomposition and rapid quenching to form nano-alloy catalysts with uniform
dispersion and small particle sizes.
Among the catalysts, CuNi exhibited the best performance, achieving an ammonium selectivity of 98% and a yield of 49%, outperforming monometallic Cu catalysts significantly in the electrochemical reduction of nitrate (NO₃⁻) to #ammonium (NH₄⁺).
More importantly, this approach not only tackles
nitrate-polluted wastewater but also transforms pollutants into valuable
resources—an ideal embodiment of the Circular Economy: turning waste into
wealth with high efficiency and sustainability.Published in: Separation and Purification
Technology 
DOI: https://doi.org/10.1016/j.seppur.2025.133312#IndustrialUniversityofHoChiMinhCity #UniversitiMalaysiaPahang #長庚大學 #永續發展與能源科技研究中心 #ChangGungUniversity #JennFangSu #CenterForSustainabilityAndEnergyTechnologies #CGU #CSET #CircularEconomy