UiO-66-NH2/wood复合材料的制备及其甲醛吸附性能研究
Preparation of UiO-66-NH2/wood composite and study on its performance in formaldehyde adsorption
房梦迪 1丁佳蓉 1赵爱晨 1胡泽文 1刘玉1
作者信息
- 1. 东北林业大学材料科学与工程学院,黑龙江哈尔滨 150040
- 折叠
摘要
以巴沙木为载体,通过溶剂热法在木材管道内原位生成UiO-66-NH2/wood复合材料;以甲醛为降解目标,对复合材料的甲醛吸附性能进行研究.并借助XRD、FT-IR、SEM和热重分析表征手段探讨了材料结构对吸附动力学的影响.结果表明,以木材为载体制备的UiO-66NH2/wood复合材料的比表面积和孔径尺寸为木材的2倍,且其在200℃以下热稳定性较UiO-66-NH2材料有明显提高,UiO-66-NH2/wood复合材料对甲醛有良好的吸附性能,在100 min内对甲醛最高吸附效率为95.64％,其对甲醛的吸附过程符合准二级动力学模型,主要表现为物理吸附,经颗粒内扩散模型分析,其甲醛的吸附过程以内部扩散为主.
Abstract
UiO-66-NH2/wood composite is generated in situ in a wood pipeline with balsa wood as a carrier via solvothermal method.The adsorption performance of the composite to formaldehyde is studied with formaldehyde as a degradation target,and the influence of the structure of the composite on the adsorption kinetics is explored by means of XRD,FT-IR,SEM and thermogravimetric characterization.It is found that the specific surface area and pore size of UiO-66-NH2/wood composite prepared are twice those of wood.Below 200℃,UiO-66-NH2/wood composite presents a better thermal stability than UiO-66-NH2 material.The maximum adsorption efficiency of UiO-66-NH2/wood composite to formaldehyde reaches 95.64％within 100 min,and its adsorption process to formaldehyde conforms to the quasi-secondary kinetic model,which is mainly manifested as physical adsorption.It is found by analyzing the intra-particle diffusion model that its formaldehyde adsorption process mainly bases on internal diffusion.
关键词
木材/UiO-66-NH2/wood/甲醛/吸附Key words
wood/UiO-66-NH2/wood/formaldehyde/adsorption引用本文复制引用
基金项目
黑龙江省自然科学基金(联合引导)(LH2023C041)
出版年
2024
NETL
NSTL
万方数据