FeS₂ Loaded Porous SiO₂ Ball as a Tweezers Recoverable Heterogeneous Fenton Catalyst with Enhanced Recyclability

Yan Wang; Yangchun Tan; Nil Kanatha Pandey; Lalit Chudal; Eric Amador; Lipin Sun; Shuhua Zhang; Manbo Zhang; Wei Chen

doi:10.1166/jnn.2021.18956

FeS₂ Loaded Porous SiO₂ Ball as a Tweezers Recoverable Heterogeneous Fenton Catalyst with Enhanced Recyclability

J Nanosci Nanotechnol. 2021 Mar 1;21(3):1474-1482. doi: 10.1166/jnn.2021.18956.

Authors

Yan Wang¹, Yangchun Tan¹, Nil Kanatha Pandey², Lalit Chudal², Eric Amador², Lipin Sun¹, Shuhua Zhang³, Manbo Zhang¹, Wei Chen²

Affiliations

¹ Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China.
² Department of Physics, The University of Texas at Arlington, Arlington, Texas 76019-0059, USA.
³ Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, Guilin University of Technology, Guilin, 541004, China.

PMID: 33404410
DOI: 10.1166/jnn.2021.18956

Abstract

We report a novel FeS₂ loaded large SiO₂ sphere (diameter of 3 cm) via double immobilization with (3-mercaptopropyl)trimethoxysilane (KH590) as a highly efficient, stable, and tweezers-recoverable heterogeneous Fenton-like catalyst (FeS₂/KH590/SiO₂@KH590). Notably, as-prepared composite catalyst exhibits a significant recycling improvement (10 runs) over free FeS₂ powder (3 runs). The outstanding recyclability and stability of FeS₂/KH590/SiO₂@KH590 can be attributed to the passivation of FeS₂ nanoparticles on SiO₂ surface by KH590 and subsequent prevention of Fe²⁺ leaching. Overall, our work provides a new avenue towards fabricating composite Fenton-like catalyst with high stability, enhanced recyclability and the advantage of easy separation.

Publication types

Research Support, Non-U.S. Gov't