Reserved for Lab Engineer Muhammad Zafar Khan and Investigation Assistant MuhammadReserved for Lab Engineer Muhammad

Reserved for Lab Engineer Muhammad Zafar Khan and Investigation Assistant Muhammad
Reserved for Lab Engineer Muhammad Zafar Khan and Study Assistant Muhammad Usman (SCME, NUST) for their assistance in obtaining SEM and Raman data. Conflicts of Interest: The author declares no conflict of interest.
nanomaterialsArticlePreparation of Multilayered Core hell Fe3O4-SnO2-C Nanoparticles through Polymeric/Silane mino FunctionalizationJae Uk Hur 1 , Gye Seok An two, and Sung-Churl Choi 1, FM4-64 Autophagy Division of Supplies Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea; [email protected] Department of Advanced Components Engineering, Kyonggi University, 154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon-si 16227, Korea Correspondence: [email protected] (G.S.A.); [email protected] (S.-C.C.); Tel.: +82-31-249-9763 (G.S.A.); +82-2-2220-0505 (S.-C.C.)Abstract: Multilayered core hell Fe3 O4 -SnO2 -C nanoparticles have been prepared by way of surface remedy and carbonization at atmospheric pressure. Fe3 O4 -SnO2 nanoparticles had been ready by the carboxylation in the pivotal particles (Fe3 O4 ) with an anionic surfactant to immobilize SnO2 nanoparticles. A process was proposed to externally surround hydrophilic carbon with amine-forming materials, polyethyleneimine (PEI), and (3-Aminopropyl) triethoxysilane (APTES). The synthesis strategy was based on the electrostatic bonding from the introduced amine group with all the hydroxyl group around the carbon precursor plus the carbonization on the coating layer by the catalytic reaction of sulfuric acid. Search phrases: Fe3 O4 -SnO2 -C; core hell; surface modification; amino functionalization; carbonizationCitation: Hur, J.U.; An, G.S.; Choi, S.-C. Preparation of Multilayered Core hell Fe3 O4 -SnO2 -C Nanoparticles by means of Polymeric/Silane mino Functionalization. Nanomaterials 2021, 11, 2877. https://doi.org/10.3390/ nano11112877 Academic PF-05105679 Cancer Editor: Francisco Alonso Received: 23 September 2021 Accepted: 26 October 2021 Published: 28 October1. Introduction Owing to their unique electrochemical and magnetic properties, magnetite (Fe3 O4 ) nanoparticles have gained significant attention for application in various fields, which includes biomedical fields [1], catalysis [2], resistive switching memory [3], power storage [4], and electromagnetic interference (EMI) shielding [5]. On the other hand, they suffer from low chemical stability and agglomeration owing to their relatively high surface energy [6,7]. Therefore, to overcome these limitations of Fe3 O4 , complementary and related maintenance functions are implemented via the formation of composites with many functional groups [80] and organic/inorganic materials [7,115]. Amongst the several materials which can be utilised for forming composites with Fe3 O4 , tin dioxide (SnO2 ), an n-type semiconductor with a wide bandgap (Eg = three.6 eV at 300 K), has been extensively investigated [16]. Owing to its exclusive qualities, SnO2 can stabilize the electronic, thermal, and chemical properties of Fe3 O4 via the proximity impact and equilibration of potentials [179], and numerous efforts have been produced to realize the electrochemical applications on the composites of Fe3 O4 and SnO2 . Nevertheless, Fe3 O4 -SnO2 composite supplies show poor electrical conductivity, which limits their applications. For that reason, it really is essential to combine these composites with high-conductivity materials, like precious metals and carbon supplies, to boost their conductivity [20,21]. In particular, numerous research happen to be carried out on the preparation of composites of Fe.