A novel sulfhydryl-modified superparamagnetic photonic crystal sensing material for the simultaneous heavy metal ions detection and adsorption treatment

doi:10.1016/j.mtchem.2023.101824

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	A novel sulfhydryl-modified superparamagnetic photonic crystal sensing material for the simultaneous heavy metal ions detection and adsorption treatment
	Dai,Zhigang; Gu,Zhijia; Yang,Ying; Yao,Lihua; Li,Maokang; Pu,Yongfu; Ying,Yu; Hong,Xiaodi
	2023
发表期刊	MATERIALS TODAY CHEMISTRY
卷号	34 页码:101824
摘要	A novel superparamagnetic photonic crystal (Fe3O4@SiO2@Sulfhydryl SPC) was successfully created for simultaneous visual detection and absorption of harmful heavy metal ions. This SPC was made by combining photonic crystal and superparamagnetic nanosphere technologies. During detection, Fe3O4@SiO2@Sulfhydryl nanospheres can move in the liquid sample and fully absorb the target substances. The detection range is from 1 mu g/L to 5 mg/L, which corresponds to the critical concentration range for heavy metal ions in drinking water and sewage. The detection limit is 1 mu g/L. In the detection process, the signal responded rapidly and remained stable when analyzed with a fiber optic spectrometer. Notably, the signal intensity decreased significantly, with a reduction of 62.22 a.u. for Hg2+ and 124.31 a.u. for Ag+. Simultaneously, the visual results were striking. The SPC changed color from orange (PC structural color) to the original reddish-brown color of the solution with the formation of magnetic aggregates (PC structural color disappeared). This SPC exhibits excellent sensitivity, offers a clear visual display, possesses strong absorption detection capabilities, is easy to use, cost-effective, and, importantly, does not cause secondary pollution. Furthermore, the harmful heavy metal ions absorbed by the SPC can be easily removed from the water sample using an external magnetic field, overcoming challenges related to efficient separation of the adsorbent material from wastewater. As a result, this SPC holds great promise for realtime visual monitoring and practical sewage purification processes.
关键词	Photonic crystal Superparamagnetic nanospheres Sulfhydryl modified Real-time visual monitoring and detecting Adsorbent material WASTE-WATER SELECTIVE REMOVAL ADSORBENTS
DOI	10.1016/j.mtchem.2023.101824
收录类别	SCI
WOS记录号	WOS:001122377000001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75534
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Dai,Zhigang,Gu,Zhijia,Yang,Ying,et al. A novel sulfhydryl-modified superparamagnetic photonic crystal sensing material for the simultaneous heavy metal ions detection and adsorption treatment[J]. MATERIALS TODAY CHEMISTRY,2023,34:101824.
APA	Dai,Zhigang.,Gu,Zhijia.,Yang,Ying.,Yao,Lihua.,Li,Maokang.,...&Hong,Xiaodi.(2023).A novel sulfhydryl-modified superparamagnetic photonic crystal sensing material for the simultaneous heavy metal ions detection and adsorption treatment.MATERIALS TODAY CHEMISTRY,34,101824.
MLA	Dai,Zhigang,et al."A novel sulfhydryl-modified superparamagnetic photonic crystal sensing material for the simultaneous heavy metal ions detection and adsorption treatment".MATERIALS TODAY CHEMISTRY 34(2023):101824.

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