Araújo-Cordero Ana María, Caddeo Francesco, Mahmoudi Behzad, Bron Michael, Wouter Maijenburg A
Center for Innovation Competence SiLi-nano, Martin-Luther-Universität Halle-Wittenberg, Karl-Freiherr-von-Fritsch-Straße 3, 06120, Halle, Germany.
Institut für Chemie, Technische Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120, Halle, Germany.
Chempluschem. 2024 Mar;89(3):e202300378. doi: 10.1002/cplu.202300378. Epub 2023 Dec 15.
Cu thin films and Cu O microstructures were partially converted to the Metal-Organic Frameworks (MOFs) Cu (BTC) or Cu(TCPP) using an electrochemical process with a higher control and at milder conditions compared to the traditional solvothermal MOF synthesis. Initially, either a Cu thin film was sputtered, or different kinds of Cu or Cu O microstructures were electrochemically deposited onto a conductive ITO glass substrate. Then, these Cu thin films or Cu-based microstructures were subsequently coated with a thin layer of either Cu (BTC) or Cu(TCPP) by controlled anodic dissolution of the Cu-based substrate at room temperature and in the presence of the desired organic linker molecules: 1,3,5-benzenetricarboxylic acid (BTC) or photoactive 4,4',4'',4'''-(Porphine-5,10,15,20-tetrayl) tetrakis(benzoic acid) (TCPP) in the electrolyte. An increase in size of the Cu micro cubes with exposed planes [100] of 38,7 % for the Cu O@Cu (BTC) and a 68,9 % increase for the Cu O@Cu(TCPP) was roughly estimated. Finally, XRD, Raman spectroscopy and UV-vis absorption spectroscopy were used to characterize the initial Cu films or Cu-based microstructures, and the obtained core-shell Cu O@Cu(BTC) and Cu O@Cu(TCPP) microstructures.
与传统的溶剂热金属有机框架（MOF）合成相比，通过电化学过程在更高的可控性和更温和的条件下，将铜薄膜和氧化铜微结构部分转化为金属有机框架（MOF）Cu（BTC）或Cu（TCPP）。最初，要么溅射铜薄膜，要么将不同种类的铜或氧化铜微结构电化学沉积到导电的ITO玻璃基板上。然后，通过在室温下以及在所需的有机连接分子（1,3,5-苯三甲酸（BTC）或光活性的4,4',4'',4'''-(卟啉-5,10,15,20-四基)四(苯甲酸)（TCPP））存在的情况下，对铜基基板进行可控阳极溶解，随后用一层薄薄的Cu（BTC）或Cu（TCPP）覆盖这些铜薄膜或铜基微结构。粗略估计，对于Cu O@Cu（BTC），具有暴露平面[100]的铜微立方体尺寸增加了38.7%，对于Cu O@Cu（TCPP），尺寸增加了68.9%。最后，使用X射线衍射（XRD）、拉曼光谱和紫外可见吸收光谱来表征初始的铜薄膜或铜基微结构，以及获得的核壳结构Cu O@Cu（BTC）和Cu O@Cu（TCPP）微结构。
