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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12589378 B1

PDFFull Text
Date of Patent:
Mar. 31, 2026

Filed:

Jul. 21, 2023

Modified nanoscale zero-valent iron (nzvi) and preparation method and application thereof

Applicant:

Chinese Research Academy of Environmental Sciences, Beijing, CN;

Inventors:

Sheng Deng, Beijing, CN;

Yu Yang, Beijing, CN;

Beidou XI, Beijing, CN;

Yonghai Jiang, Beijing, CN;

Xu Han, Beijing, CN;

Fu Xia, Beijing, CN;

Han Xiao, Beijing, CN;

Shuxuan Wu, Beijing, CN;

Tianyu Ju, Beijing, CN;

Assignee:

Chinese Research Academy of Environmental Sciences, Beijing, CN;

Attorney:
Primary Examiner:

Clare M Perrin

Int. Cl.
CPC ...
B01J 20/02 (2006.01); B01J 20/26 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B01J 20/32 (2006.01); C02F 1/28 (2023.01); C08G 73/06 (2006.01); C02F 101/00 (2006.01); C02F 101/10 (2006.01); C02F 101/22 (2006.01); C02F 103/06 (2006.01);
U.S. Cl.
CPC ...
B01J 20/0229 (2013.01); B01J 20/262 (2013.01); B01J 20/28016 (2013.01); B01J 20/3085 (2013.01); B01J 20/3242 (2013.01); B01J 20/3272 (2013.01); C02F 1/288 (2013.01); C08G 73/0611 (2013.01); B01J 20/3042 (2013.01); B01J 20/3231 (2013.01); C02F 1/281 (2013.01); C02F 1/285 (2013.01); C02F 2101/006 (2013.01); C02F 2101/103 (2013.01); C02F 2101/22 (2013.01); C02F 2103/06 (2013.01);
Abstract

Disclosed are a modified nanoscale zero-valent iron (nZVI) and a preparation method and an application thereof. The preparation method of the modified nZVI includes the following steps: S1: mixing nZVI, a stabilizer and an oxidant together and stirring in an inert atmosphere to obtain a polymerization precursor solution; and S2: dripping pyrrole into the polymerization precursor solution prepared in the S1, maintaining an inert gas atmosphere for polymerization reaction, and performing cooling, filtration and vacuum drying to obtain the modified nZVI. According to the preparation method of the modified nZVI in the present disclosure, nZVI, stabilizer and oxidant are mixed to prepare a polymerization precursor solution, into which pyrrole is added for polymerization to obtain uniformly-coated modified nZVI, thereby forming a comprehensive mechanical support, which cannot only effectively improve oxidation property and structural stability of nZVI, but also promote reactivity of nZVI with heavy metal (semimetal) ions or radioactive elements.

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