| 摘要: | 印刷電路板(printed circuit board , PCB)一種將多種電子元件結合再一起的模塊，其印刷電路板廣泛應用在目前人類的 3C 產品中，如手機、電視和電腦等常見的家電中皆有使用到 PCB，然而大多印刷電路板卻無法有效的回 收再利用，其原因來自於印刷電路板中含有大量且成分混雜的金屬元素、玻璃纖維和熱固性樹脂，關於目前印刷電路板的回收方式是以化學法回收印刷電路板中的金屬外，其餘的玻璃纖維和熱固性樹脂由於本身利用價值較 低，大多是以掩埋和焚燒的方式處，而近年來受到歐盟所制定碳稅和 ESG 相關政策後使得廢棄回收與循環經濟再利用再次受到重視，因此本實驗將使用提取來自印刷電路板的元素金後應用於生醫檢測和對印刷電路板粉屑嘗試進行融鹽法還原處理後用於儲能元件應用，嘗試創造出具有更高經濟價值之材料，於生醫檢測領域中透過將元素金使用生物無毒性的還原法還原成奈米金粒子後，在對奈米金粒子的表面進行白金奈米粒子修飾，得到海膽狀的金/白金奈米粒子，並應用在生醫檢測領域中，其別分在 Protein A 與 hCG 的檢測中，表現出獨特的顯色能力外，並在低濃度的檢測中表現出更 佳的靈敏度，而在儲能元件應用中，經初步鑑定後判定玻璃纖維中的成分結構為矽酸鋁和矽酸鈣的結構，並在還原後檢測到矽的信號，並在鋰離子電池中有初步的嘗試實驗。;A printed circuit board (PCB) is a module that combines multiple electronic components together and is widely used in current consumer electronics products such as smartphones, televisions, and computers. However, most PCBs cannot be effectively recycled and reused due to the presence of a large amount of mixed metal elements, glass fibers, and thermosetting resins. While the metals in PCBs can be chemically recovered, the remaining glass fibers and thermosetting resins, with their lower utility value, are often disposed of through landfilling or incineration. In recent years, with the implementation of carbon taxes and ESG related policies by the European Union, the importance of waste recycling and circular economy practices has been emphasized. Therefore, in this experiment, we aim to extract elemental gold from PCBs and apply it in biomedical detection, as well as explore the use of PCB debris through a molten salt-based reduction process for energy storage device applications. The goal is to create materials with higher economic value. In the field of biomedical detection, we will utilize non toxic bioreduction methods to convert the elemental gold extracted from PCBs into gold nanoparticles. These nanoparticles will be surface-modified with platinum nanoparticles to obtain sea urchin-shaped gold/platinum nanoparticles, which will be applied in the detection of Protein A and hCG. They exhibit unique color development capabilities and show improved sensitivity in low concentration detection. Regarding the application in energy storage devices, the preliminary assessment of the composition structure in the glass fibers indicates the presence of aluminum silicate and calcium silicate structures. After reduction, signals indicating the presence of silicon were detected, and initial experimental attempts were made in lithium-ion batteries. |
