文献类型：期刊文献

英文题名：Wood-based catalytic filter decorated with ZIF-67 for highly efficient and continuous organic pollutant removal

作者：Wang, Xin[1] Hu, Jihang[1] Guan, Hao[1] Dai, Xinjian[1] Wu, Mingyue[1] Wang, Xiaoqing[1]

第一作者：王霄

通信作者：Wang, XQ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2024

卷号：479

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20234915155198);Scopus(收录号：2-s2.0-85178176335);WOS:【SCI-EXPANDED(收录号:WOS:001126597000001)】；

基金：This work was financially supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2020QA004) .

语种：英文

外文关键词：Wood-based catalytic filter; Metal-organic framework; Advanced oxidation processes; Continuous-flow reactor; Wastewater treatment

摘要：High-performance catalytic filters with both high removal efficiency and high water flux are essentially demanded for organic wastewater purification but still remain a great challenge. Herein, taking full advantage of the well-aligned liquid transport channels of natural wood and the excellent catalytic activity of metal-organic frameworks (MOFs), we developed a high-efficiency wood-based catalytic filter (ZIF-67@wood) for continuous and highly efficient catalytic degradation of methylene blue (MB) in water. The wood scaffold was pretreated with a sodium hydroxide (NaOH) solution to create nucleation sites for in situ growth of ZIF-67 nanocrystals within the wood channels, which function as catalytic sites to activate peroxymonosulfate (PMS) to generate reactive radicals (& sdot;OH and SO4 center dot-) for MB degradation. As the MB solution flows through the catalytic filter, the abundant well-distributed vessel channels of natural wood serve as the primary pathways for rapid fluid transport and enhance the contact between organic contaminants and ZIF-67 nanocrystals. The obtained ZIF-67@wood catalytic filter demonstrated a high MB removal efficiency (similar to 90 %) with a water flux rate of 5119 L m(-2)h(-1) under gravity-driven conditions, outperforming most previously reported MOF-based composites. Moreover, multiple ZIF-67@wood catalytic filters can be readily integrated and assembled as a flow-through catalytic reactor for continuous MB degradation. Such cost-effective, highly efficient, and scalable wood-based catalytic filters hold great promise for practical wastewater treatment.