Extraction of Pb²⁺ from dilute solution by paramagnetic Fe₃O₄ @ SiO₂ @ Clpr-silica @ dithizone solid-phase nanoextractant

Jie MaCollege of Science, University of Shanghai for Science and Technology, 516# Jungong Road, Shanghai, 200093, P.R. China, Tel./Fax: +86 21 65665041 110Correspondence[email protected]

Guoliang ChengCollege of Science, University of Shanghai for Science and Technology, 516# Jungong Road, Shanghai, 200093, P.R. China, Tel./Fax: +86 21 65665041 110

Sergey BasovCollege of Science, University of Shanghai for Science and Technology, 516# Jungong Road, Shanghai, 200093, P.R. China, Tel./Fax: +86 21 65665041 110

Shuping ZhangCollege of Science, University of Shanghai for Science and Technology, 516# Jungong Road, Shanghai, 200093, P.R. China, Tel./Fax: +86 21 65665041 110Correspondence[email protected]

Tingting JiCollege of Science, University of Shanghai for Science and Technology, 516# Jungong Road, Shanghai, 200093, P.R. China, Tel./Fax: +86 21 65665041 110

Abstract

A paramagnetic solid phase nanoextractant, Fe₃O₄ @ SiO₂ @ Clpr-silica @ dithizone, is firstly constructed for separating Pb²⁺ from dilute solution. The special extractant is composed of a paramagnetic Fe₃O₄ nanomaterials core, amorphous silica, chloro-propyl silane coupling agent, and dithizone from inside to outside. The experimental results demonstrate the as-obtained extractant fine adsorbability, high adsorption and desorption speed, wide acidic resistance, facile separability, and admirable reusability. The adsorption capacity of the extractant exceeds 63.4 mg g⁻¹, and the adsorption process is accomplished in 25 s. Pb²⁺ ions are completely eluted from the extractant immersed into 2 M HNO₃ solution in 20 s. After five times of adsorption-regeneration cycles, no significant loss of adsorption capacity is observed, indicating the good stability of the extractant.

Keywords:

Acknowledgment

The authors are thankful to the national natural science foundation of China (No. 20906061) for financial supports.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Order Reprints Request Corporate Permissions

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

Request Academic Permissions

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.

Extraction of Pb²⁺ from dilute solution by paramagnetic Fe₃O₄ @ SiO₂ @ Clpr-silica @ dithizone solid-phase nanoextractant

Information for

Open access

Opportunities

Help and information

Extraction of Pb2+ from dilute solution by paramagnetic Fe3O4 @ SiO2 @ Clpr-silica @ dithizone solid-phase nanoextractant

Abstract

Acknowledgment

Reprints and Corporate Permissions

Academic Permissions

Related research

To cite this article:

Download citation

Information for

Open access

Opportunities

Help and information

Keep up to date

Your download is now in progress and you may close this window

Login or register to access this feature

Extraction of Pb²⁺ from dilute solution by paramagnetic Fe₃O₄ @ SiO₂ @ Clpr-silica @ dithizone solid-phase nanoextractant