School of Materials Science and Engineering, State Key Laboratory for Environment-Friendly Energy Materials, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang, 621010, People's Republic of China.
State Key Laboratory of Efficient Utilization for Low Grade Phosphate Rock and Its Associated Resources, Post-Doctoral Scientific Research Station of Wengfu (Group) Co., Ltd., 3491 Baijin Road, Guiyang, 550016, People's Republic of China.
Environ Sci Pollut Res Int. 2022 Jun;29(26):40041-40052. doi: 10.1007/s11356-021-18272-x. Epub 2022 Feb 3.
The photocatalytic properties of Zn/Co zeolite imidazolate frameworks (ZIF-ZnCo) prepared by various Zn/Co ratio are of significantly diversity due to the morphology structure of the ZIF-ZnCo. Thereinto, the prepared ZIF-ZnCO-8:1 is excellent capability by virtue of its 3D cross-shaped structure. Spectral test results show that as-prepared novel 3D cross-shaped ZIF-ZnCo has a lower recombination rate of electron and hole pairs than the lamellar and dodecahedral, thus improving the photocatalytic ability. The photocatalytic ability of 3D cross-shaped ZIF-ZnCo was carefully investigated for removing mixed solution of Congo Red (CR) and Cr(VI). The photocatalytic reduction ability of 3D cross-shaped ZIF-ZnCo was 22% higher than ZIF-8 for Cr(VI). Meanwhile, CR was altogether removed at dark processing and Cr(VI) was removed 70% after dark processing 120 min and photocatalytic 240 min. Therefore, the high adsorption and photocatalytic capacity denote the potential application of 3D cross-shaped ZIF-ZnCo.
不同锌钴比制备的 Zn/Co 沸石咪唑酯骨架（ZIF-ZnCo）具有显著不同的光催化性能，这主要是由于 ZIF-ZnCo 的形态结构不同。其中，合成的 ZIF-ZnCO-8:1 因其具有 3D 十字形结构而具有优异的性能。光谱测试结果表明，所制备的新型 3D 十字形 ZIF-ZnCo 具有比片状和十二面体更低的电子和空穴对复合率，从而提高了光催化能力。详细研究了 3D 十字形 ZIF-ZnCo 对刚果红（CR）和 Cr(VI)混合溶液的光催化去除能力。3D 十字形 ZIF-ZnCo 的光催化还原能力比 ZIF-8 对 Cr(VI)的还原能力高 22%。同时，在黑暗处理下 CR 被完全去除，黑暗处理 120min 后，再进行 240min 的光催化处理，Cr(VI)的去除率达到 70%。因此，高吸附和光催化能力表明 3D 十字形 ZIF-ZnCo 具有潜在的应用前景。
