Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Materials Science, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, People's Republic of China.
Environ Sci Pollut Res Int. 2023 Dec;30(59):124306-124315. doi: 10.1007/s11356-023-31114-2. Epub 2023 Nov 24.
Adsorptive removal of dyes (e.g., malachite green (MG)) from wastewater using commercially available adsorbents is not significantly efficient. Metal-organic frameworks (MOFs) such as Cu-BTC is considered as an excellent adsorbent in adsorption-separation filed. However, the water instability of Cu-BTC restricts its potential utilization in dye wastewater purification. In this paper, we have developed a novel metal/covalent-organic frameworks (Cu-BTC@TpPa-1) binary composite by solvothermal method. This composite serves as a multifunctional platform for the effective removal of MG from water. This Cu-BTC@TpPa-1 obviously keeps structural integrity soaked in water for 7 days. And its heat resistant performance can achieve 360 °C because of the TpPa-1 protection, which is outdistance to that of Cu-BTC. The adsorbed capacity of MG over Cu-BTC@TpPa-1 is exceptionally high, with an uptake of up to 64.12 mg/g, which is superior compared to previous adsorbents, highlighting its superior adsorption capabilities. The adsorptive performance was controlled by the associative effects of Cu-BTC and TpPa-1 with an association effect of π-complexation and electrostatic attraction. The Cu-BTC@TpPa-1 might be a prospective adsorbent for MG capture from industrial wastewater.
使用市售吸附剂从废水中吸附去除染料（例如孔雀石绿 (MG)）的效率并不高。金属有机骨架（MOFs）如 Cu-BTC 被认为是吸附-分离领域的一种优异吸附剂。然而，Cu-BTC 的水不稳定性限制了其在染料废水净化中的潜在应用。在本文中，我们通过溶剂热法开发了一种新型金属/共价有机骨架（Cu-BTC@TpPa-1）二元复合材料。该复合材料作为一种多功能平台，可有效去除水中的 MG。这种 Cu-BTC@TpPa-1 在水中浸泡 7 天仍明显保持结构完整性。并且由于 TpPa-1 的保护，其耐热性能可达 360°C，远远超过 Cu-BTC。MG 在 Cu-BTC@TpPa-1 上的吸附容量非常高，达到 64.12mg/g，优于以前的吸附剂，突出了其卓越的吸附能力。吸附性能受 Cu-BTC 和 TpPa-1 的协同效应控制，具有π-配合和静电吸引的协同效应。Cu-BTC@TpPa-1 可能是一种从工业废水中捕获 MG 的有前途的吸附剂。
