铁尾矿制备介孔硅酸锌复合材料及其对亚甲基蓝的高效吸附  

Mesoporous zinc silicate composites derived from iron ore tailings and their efficient adsorption for methylene blue

作　　者：汪冬梅[1] 丁开振 徐光青[1] 郭敏娜 韩渺 吕珺[1] WANG Dongmei;DING Kaizheng;XU Guangqing;GUO Minna;HAN Miao;LYU Jun(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Masteel Luohe Mining Co.Ltd.,Lujiang 231500,China)

机构地区：[1]合肥工业大学材料科学与工程学院,合肥230009 [2]安徽马钢罗河矿业有限责任公司,安徽庐江231500

出　　处：《功能材料》2024年第10期10001-10007,共7页Journal of Functional Materials

基　　金：中央高校基本科研业务费专项资金资助(JZ2022HGQA0223)。

摘　　要：铁尾矿转化为高附加值产品的功能化利用越来越受关注和期待。本文以铁尾矿为原料,引入锌离子水热合成了介孔硅酸锌复合材料,包括由层状纳米片组装而成的花瓣状硅酸锌类物质(zincsilite)和异晶锌(hemimorphite)复合材料,以及由短棒组装而成的椭球状硅锌矿(willemite)复合材料。其中,花瓣状异晶锌复合材料具有典型的片状粒子聚集形成的狭缝孔结构,孔隙宽度约为3.385 nm,比表面积为96.15 m^(2)/g。该复合材料对染料亚甲基蓝(MB)有高效吸附效应,10 min内去除率接近100%,在染料废水处理领域具有潜在的应用前景。The functional utilization of iron ore tailings(IOT)converted into high value-added products is receiving increasing attention and expectation.Herein,mesoporous zinc silicate composites,including zincsilite composite and hemimorphite composite with flower-like morphology assembled by layered nanosheets,as well as willemite composite with ellipsoidal morphology assembled by short rods,were synthesized from iron ore tailings by introducing zinc ions via hydrothermal reaction process.Mesoporous zinc silicate composite hemimorphite has a typical narrow pore structure formed by the aggregation of sheet-like particles,with a pore width of about 3.385 nm and a specific surface area of 96.15 m^(2)/g.The composite shows efficient adsorption capacity for the dye methylene blue(MB),with a removal rate of nearly 100%within 10 min,and has potential application prospects in the field of dye waste water treatment.

关 键 词：铁尾矿 介孔硅酸锌复合材料 水热反应 亚甲基蓝 吸附 

分 类 号：TB34[一般工业技术—材料科学与工程] X705[环境科学与工程—环境工程]