SnFe₂O₄ Nanocrystals as Highly Efficient Catalysts for Hydrogen‐Peroxide Sensing

Abstract

SnFe2 O4 nanocrystals (NC), prepared with a simple one-step carrier-solvent-assisted interfacial reaction process, were developed as highly efficient catalysts for hydrogen peroxide sensing. These NCs, with a size of around 7 nm, served as the sensing catalyst and were decorated onto the pore surfaces of a porous fluorine-doped tin oxide (PFTO) host electrode, prepared from commercial FTO glass with a simple anodic treatment, to form the sensing electrode for hydrogen peroxide. The SnFe2 O4 NCs-loaded PFTO electrode exhibited an ultra-high sensitivity of 1027 mA m(-1) cm(-2) toward hydrogen peroxide, outperforming Pt NCs-loaded PFTO electrodes. The SnFe2 O4 NCs-loaded PFTO electrode proved a promising relatively low cost, high performance sensing electrode for hydrogen peroxide.

Catalase-Modulated Heterogeneous Fenton Reaction for Selective Cancer Cell Eradication: SnFe2O4 Nanocrystals as an Effective Reagent for Treating Lung Cancer Cells

“…Also included for comparison is the diffraction pattern of the SnFe 2 O 4 from the previous literature. 15 The two patterns are in good agreement, further confirming the composition of the present product to be SnFe 2 O 4 . The magnetization curve for the SnFe 2 O 4 product measured by a VSM is shown in Figure 2c.…”

“…14 So far, the application of the recently synthesized spinel oxide, SnFe 2 O 4 , has been largely unexplored, although, interestingly, it exhibits outstanding degradation efficiencies as a magnetically recyclable heterogeneous Fenton catalyst. 15 Investigating the anticancer efficacy of these SnFe 2 O 4 nanocrystals and unveiling their overall potential medical use are of great interest.…”

Heterogeneous Fenton Reaction Enabled Selective Colon Cancerous Cell Treatment

“…SnFe 2 O 4 NCs were prepared with a single-step carrier solvent assisted interfacial chemical reaction method 11 . In brief, a precursor aqueous solution was first formulated by dissolving a suitable amount (0.0469 M) of SnCl 2 (98%, obtained from Alfa Aesar) in 62.5 mL ethanol (Sigma-Aldrich, 99%), followed by adding a stoichiometric amount of Fe(NO 3 ) 3˙ 9H 2 O (98%, J.T.…”

“…In this study, these SnFe 2 O 4 NCs were used for the selective treatment of colon cancerous cells. The SnFe 2 O 4 NCs were farbricated through a single-step carrier solvent assisted interfacial chemical reaction procedure 11 . These SnFe 2 O 4 NCs went through a certain extent of aggregation when dispersed in saline for cell treatment applications, depending on whether or not sonication was applied and the concentration of the suspension 12 .…”

An Ultrasmall SnFe2O4 Nanozyme with Endogenous Oxygen Generation and Glutathione Depletion for Synergistic Cancer Therapy

“…Bimetallic oxides, such as tin ferrite (SnFe 2 O 4 , denoted as SFO), have drawn wide attention in the photocatalytic field based on the inherent existence of multivalent metal ions (Sn 2+ /Sn 4+ and Fe 2+ /Fe 3+ ) and significant absorption in the NIR region. [51][52][53][54] It can therefore be assumed that SFO could conduct as a potential NIR light-triggered phototherapy agent. Herein, we for the first time synthesized a novel SFO nanozyme by a simple strategy to achieve an "all in one" function (computed tomography (CT) and magnetic resonance (MR) imaging, and magnetic targeting synergistic CDT/PTT/PDT).…”