PDF (1780K)
摘要
采用原位生长法,控制组成金属离子配合比,在四氧化三铁(Fe3O4)表面垂直生长镍铁(Ni-Fe)层状双金属氢氧化物(LDHs),制得Fe3O4/Ni-Fe-LDHs复合结构,并考察其对有机染料(甲基橙和亚甲基蓝)的吸附规律。结果表明:制得的Fe3O4/Ni-Fe-LDHs的饱和磁化强度为41.2emu/g,在室温,镍∶铁的摩尔配合比为2∶1,吸附平衡时间为48h,Fe3O4/Ni-Fe-LDHs用量为25mg/L的条件下,Fe3O4/Ni-Fe-LDHs对甲基橙和亚甲基蓝的吸附量分别达到188mg/g和175mg/g。
Abstract
Based on in-situ growth method,magnetite/nickel-iron layered double metal hydroxides (Fe3O4/Ni-Fe-LDHs) hierarchical structures were prepared using Ni-Fe-LDHs sheets growing vertically on the surface of Fe3O4.The adsorption properties of Fe3O4/Ni-Fe-LDHs on organic dyes (methyl orange and methylene blue) were studied.The results showed that the saturation magnetization of Fe3O4/Ni-Fe-LDHs was 41.2emu/g.At room temperature,with the nickel/iron (Ni/Fe) ratio of 2∶1,the adsorption equilibrium time of 48 h and the dosage of 25 mg/L,the adsorption capacities of Fe3O4/Ni-Fe-LDHs for methyl orange and methylene blue were 188mg/g and 175mg/g,respectively.
关键词
层状双金属氢氧化物(LDHs)
/
镍铁比
/
复合结构
/
吸附性能
Key words
layered double metal hydroxides (LDHs)
/
nickel/iron ratio
/
hierarchical structure
/
adsorption property
镍铁比对Fe3O4/Ni-Fe-LDHs复合结构吸附性能影响研究[J].
化工新型材料, 2018, 46(11): 205-207 DOI:
[1] Chowdhury P R,Bhattacharyya K G.Ni/Co/Ti layered double hydroxide for highly efficient photocatalytic degradation of Rhodamine B and Acid Red G:a comparative study[J].Photochem Photobiol Sci,2017,16(6):835-839.
[2] 党睿,马向荣,白艳霞,等.Ni2+-Al3+-CNO--CO2-3-LDHs层状材料的制备及其热分解性能研究[J].化工新型材料,2017,45(5):167-172.
[3] Wang Q,O’Hare D.Large-scale synthesis of highly dispersed layered double hydroxide powders containing delaminated single layer nanosheets[J].Chem Commun,2013,49(56):6301-6303.
[4] Yun L,Yang Z,Yu Z,et al.Synthesis of four-angle star-like CoAl-MMO/BiVO4 p-n heterojunction and its application in photocatalytic desulfurization[J].RSC Adv,2017(41):25455-25460.
[5] Zhu Y,Ren J,Yang X,et al.Interface engineering of 3D BiVO4/Fe-based layered double hydroxide core/shell nanostructures for boosting photoelectrochemical water oxidation[J].J Mater Chem A,2017,5(20):9952-9959.
[6] Ma X R,Liu Z H.Effect of sodium citrate amount on morphology and anion exchange property of Co2+-Ni2+-Fe3+-CO2-3 LDHs[J].J Inorg Mater,2014,29(12):1306-1312.
[7] Everaert M,Warrinnier R,Baken S,et al.Phosphate-exchanged Mg-Al layered double hydroxides:a new slow release phosphate fertilizer[J].ACS Sustainable Chem Eng,2016,8(4):4280-4287.
基金资助
山东省自然科学基金资助项目(ZR2015BM022)
