| 研究生: |
羅之磊 Rosell, Neon Vicente III Bacarro |
|---|---|
| 論文名稱: |
二維材料變得容易:關於熔鹽合成硼氮化物和碳氮化物及其廢水處理之應用 2D Materials Made Facile: A Treatise on the Molten Salt Synthesis of Boron and Carbon Nitrides and their Applications for Wastewater Treatment |
| 指導教授: |
張高碩
Chang, Kao-Shuo |
| 學位類別: |
博士 Doctor |
| 系所名稱: |
工學院 - 材料科學及工程學系 Department of Materials Science and Engineering |
| 論文出版年: | 2026 |
| 畢業學年度: | 114 |
| 語文別: | 英文 |
| 論文頁數: | 137 |
| 中文關鍵詞: | 熔鹽合成 、六方氮化硼 、石墨氮化碳 、聚(三嗪酰亞胺) 、光催化 、超濾 |
| 外文關鍵詞: | molten salt synthesis, hBN, gCN, PTI, photocatalysis, ultrafiltration |
| ORCID: | 0000-0002-9176-4932 |
| 相關次數: | 點閱:9 下載:0 |
| 分享至: |
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熔鹽合成法成功製備了結晶碳和氮化硼,二者皆表現出高結晶度和優異的水分散性。我們製備了結晶度極高的結晶聚三嗪酰亞胺(PTI),並首次透過FT-IR光譜的經驗指數證實了這一點。鉀離子在PTI中的插層是該材料研究中的新發現,這可能是其結晶度增強的原因。 PTI奈米片展現出光催化活性,並採用SDS輔助水熱法與P25複合。優化後的PTI-P25複合材料在300 W氙燈照射下能有效降解亞甲基藍(MB)和羅丹明(RhB)染料,在0.8 V飽和甘汞電極(SCE)下實現了0.6%優異的光電轉換效率。
在實驗室規模下簡單的自下而上合成六方氮化硼(hBN)是此材料經驗研究的關鍵進展。值得注意的是,合成的粉末無需額外處理即可表現出親水性。由於其顯著的親水性,hBN被用作超濾膜的主要成分,該超濾膜在過濾過程中能夠攔截99%的羅丹明B(RhB)染料。當hBN與P25混合並經受300 W氙燈照射時,發現其對活性氧敏感,從而形成可重複使用的超濾膜系統。
Molten salt synthesis was successfully used to create crystalline carbon and boron nitrides, both showing high crystallinity and strong water dispersibility. Crystalline poly-(triazine imide) (PTI) with unmatched crystallinity was produced, supported by our first empirically-derived index of FT-IR spectra for the material. Potassium intercalation in PTI, a novel finding for this material, may explain the enhanced crystallinity. PTI nanosheets demonstrated photocatalytic activity and were combined with commercial photocatalytic titanium dioxide (P25) using a sodium dodecyl sulfate (SDS)-assisted hydrothermal method. The optimized PTI-P25 composite effectively degraded methylene blue and Rhodamine B dyes under 300 W Xenon (Xe) lamp exposure and reached a record photo-to-current efficiency of 0.6% at 0.8 volts versus saturated calomel electrode (V SCE).
The facile, bottom-up synthesis of hexagonal boron nitride (hBN) at the laboratory scale represents a key advancement in the empirical research on this material. Remarkably, the as-synthesized powders exhibited hydrophilicity without requiring additional powder treatment. Due to its pronounced water affinity, hBN was employed as a principal component in an ultrafiltration membrane, which demonstrated the capability to reject 99% of rhodamine B dye during filtration. The dye retained on hBN was found to be sensitive to reactive oxygen species when combined with P25 and subjected to 300 W Xe irradiation, resulting in a reusable ultrafiltration membrane system.
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