Fe3O4-doped silk fibroin-polyacrylamide hydrogel for selective and highly efficient absorption of cationic dyes pollution in water

Hu, Yongqin1,2; Hou, Chen1,2; An, Jia3; Fang, Junan1,2; Shi, Yuxia1; Fan, Qianxi1; Liu, Guoyi1,2; Liu, Yufei1,2,4

2022-06-25

10.1088/1361-6528/ac5f9b

NANOTECHNOLOGY   影响因子和分区

0957-4484

1361-6528

Overuse of organic dyes has caused serious threats to the ecosystem and human health. However, the development of high-efficient, environmentally friendly, selective, and degradable cationic dye adsorbents remains a huge challenge. In this work, a novel Fe3O4 nanoparticles doped silk fibroin-polyacrylamide magnetic hybrid hydrogel (Fe3O4@SF-PAAM) was successfully fabricated by combining free radical polymerization to prepare hydrogels and in situ co-precipitation to prepare nanoparticles. The obtained Fe3O4@SF-PAAM hydrogel shows strong magnetic performance with saturated magnetic of 10.2 emu mg(-1) and excellent swelling properties with a swelling ratio of 55867%. In addition, Fe3O4@SF-PAAM can adsorb cationic dyes such as methylene blue (MB), crystal violet, and Rhodamine B, but has no adsorption effect on anionic dyes such as methyl orange, congo red, and carmine, indicating that Fe3O4@SF-PAAM has good selective adsorption properties for cationic dyes. Interestingly, the adsorption capacity of Fe3O4@SF-PAAM was approached 2025 mg g(-1) for MB (MB, a typical cation dye) at 25 degrees C and neutral. Meanwhile, the hybrid hydrogel is reusable, the removal rate for MB is still over 90% after the five adsorption-desorption cycles. The fabricated magnetic hybrid hydrogel is a kind of a highly-efficiency and eco-friendly adsorbent and presents great potential applications in water purification and environmental protection.

magnetic hydrogel Fe3O4 super-swelling cationic dyes adsorption

SCI ; EI

英语

其他

China Fundamental Research Funds for the Central Universities[2020CDJGFCG006] ; National Key Research and Development Program of China[2016YFE0125200] ; NSFC[62005030,61927818]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000780048300001

IOP Publishing Ltd

20221712034491

Adsorption ; Aromatic compounds ; Azo dyes ; Free radical polymerization ; Free radicals ; Health risks ; Hydrogels ; Nanomagnetics ; Precipitation (chemical) ; Water absorption ; Water pollution

Water Pollution:453 ; Health Care:461.7 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Colloid Chemistry:801.3 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Polymerization:815.2

MATERIALS SCIENCE

Web of Science

1.Chongqing Univ, Minist Educ, Key Lab Optoelect Technol & Syst, Chongqing 400044, Peoples R China
2.Chongqing Univ, Coll Optoelect Engn, Ctr Intelligent Sensing Technol, Chongqing 400044, Peoples R China
3.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China
4.Swansea Univ, Coll Sci, Ctr Nano Hlth, Singleton Pk, Swansea SA2 8PP, W Glam, Wales

Hu, Yongqin,Hou, Chen,An, Jia,et al. Fe3O4-doped silk fibroin-polyacrylamide hydrogel for selective and highly efficient absorption of cationic dyes pollution in water[J]. NANOTECHNOLOGY,2022,33(26).

Hu, Yongqin.,Hou, Chen.,An, Jia.,Fang, Junan.,Shi, Yuxia.,...&Liu, Yufei.(2022).Fe3O4-doped silk fibroin-polyacrylamide hydrogel for selective and highly efficient absorption of cationic dyes pollution in water.NANOTECHNOLOGY,33(26).

Hu, Yongqin,et al."Fe3O4-doped silk fibroin-polyacrylamide hydrogel for selective and highly efficient absorption of cationic dyes pollution in water".NANOTECHNOLOGY 33.26(2022).