量子点@金属有机骨架材料的制备及在光催化降解领域的应用

Preparation of Quantum Dots @ Metal-Organic Frameworks and Its Application in the Field of Photocatalytic Degradation

金属有机骨架(Metal-organic Frameworks,MOFs)材料与传统的多孔材料相比,具有结构有序且多样、可调控的孔径尺寸和超高的比表面积等特点,使其在光催化领域得到了广泛的关注。同时,纳米荧光材料量子点(Quantum Dots, QDs)具有良好的光学特性且能够将近红外光转换为可见光,进而可以促进对占太阳光谱较大比例的可见光的吸收,它的出现也推动了光催化领域的发展。但二者作为单一相催化剂本身都存在缺点,限制了其作为光催化剂的进一步应用与发展。近年来,研究者发现将QDs和MOFs材料有效结合形成复合型光催化剂是提高单一相催化剂光催化性能的途径之一,并进行了初步研究,结果表明其催化性能大大提高,在解决环境问题方面有着广阔的应用前景。本文综合国内外现状,围绕QDs@MOFs复合型光催化剂的制备及在光催化降解领域的应用及发展进行了综述。本文还提出了在研究QDs@MOFs复合型光催化剂过程中应注意的关键性问题以及对未来的发展趋势进行了展望。

Metal-organic frameworks（MOFs） materials have attracted much attention in the field of photocatalysis, as compared with conventional porous materials, which are structurally ordered and diverse, with adjustable pore size and ultra-high specific surface area. At the same time, quantum dots（Quantum Dots, QDs） of nano-fluorescent materials have good optical properties and can convert near-infrared light into visible light, which can promote the absorption of visible light, which accounts for a large proportion of the solar spectrum, and the emergence of QDs has also contributed to the development of photocatalysis. But as a single phase catalyst, they have autologous shortcomings, limiting their use as a photocatalyst for future application and development. In recent years, researchers have found that the effective combination of QDs and MOFs materials to form a composite photocatalyst is one of the ways to improve the photocatalytic performance of single phase catalysts, and a preliminary study has been carried out. The results show that catalytic performance is greatly improved and it has broad application prospect in solving environmental problems. This paper combines the status quo at home and abroad, and a series of studies on the preparation of QDs@MOFs composite photocatalyst as well as its application and development in the field of photocatalytic degradation are reviewed. This paper also puts forward the key problems that should be paid attention to in the process of QDs@MOFs composite photocatalyst and the future development trend.