Metallo-Solid Lipid Nanoparticles as Colloidal Tools for Meso–Macroporous Supported Catalysts

Abstract

Meso-macroporous silica containing iron oxide nanoparticles (15-20 nm) was synthesized by formulating solid lipid nanoparticles and metallosurfactant as both template and metal source. Due to the high active surface area of the catalyst, the material exhibits an excellent performance in a Fenton-like reaction for methylene blue (MB) degradation, even at low amount of iron oxide (5% TOC after 14h).2

Magnetic surfactants

“….In a later paper the authors used similar templated silica supports combined with solid lipid nanoparticles to catalyze the degradation of methylene blue in aqueous solution by a Fenton-like reaction [68]. The resulting silica matrix degraded the pollutant with twelve time less iron oxide than previously reported.…”

Metallosurfactant Ionogels in Imidazolium and Protic Ionic Liquids as Precursors To Synthesize Nanoceria as Catalase Mimetics for the Catalytic Decomposition of H2O2

“…[32] Recently,b ya pplying IL/water/CH 2 Cl 2 ionogels, Han et al prepared hierarchical porous b-FeOOH nanomaterials, which displayed high activity for the oxidation of xanthene to xanthone. [35] In ap revious report, Kim et al prepared Fe 2 O 3 @meso-/macroporous silica materialb y using the metallosurfactant cetyltrimethylammonium trichloromonobromoferrate (CTAF;C 16 H 33 N(CH 3 ) 3 N + FeCl 3 Br À )a san iron source. [21,33] Generally,m etal ions need to be introduced into the systems when preparing nanomaterials, [21,34] whereas metallosurfactants can be effectively used as the metal sources whent hey are used to prepare nanomaterials.…”

“…[32] By contrast, more reports have described the synthesis of nanomaterials with hydrogel templates. [35] In addition to iron source candidates, similar metallosurfactants can also be applied as some other metal sources, such as ceriumi ons, gadolinium ions, and holmium ions. [35] In ap revious report, Kim et al prepared Fe 2 O 3 @meso-/macroporous silica materialb y using the metallosurfactant cetyltrimethylammonium trichloromonobromoferrate (CTAF;C 16 H 33 N(CH 3 ) 3 N + FeCl 3 Br À )a san iron source.…”

“…[21,33] Generally,m etal ions need to be introduced into the systems when preparing nanomaterials, [21,34] whereas metallosurfactants can be effectively used as the metal sources whent hey are used to prepare nanomaterials. [35] In ap revious report, Kim et al prepared Fe 2 O 3 @meso-/macroporous silica materialb y using the metallosurfactant cetyltrimethylammonium trichloromonobromoferrate (CTAF;C 16 H 33 N(CH 3 ) 3 N + FeCl 3 Br À )a san iron source. [35] In addition to iron source candidates, similar metallosurfactants can also be applied as some other metal sources, such as ceriumi ons, gadolinium ions, and holmium ions.…”

Synthesis of Mesoporous Iron Oxides by an Inverse Micelle Method and Their Application in the Degradation of Orange II under Visible Light at Neutral pH

“…9−14 In the photo-Fenton process catalyzed by mesoporous iron oxides, diffusion can be promoted by large pore sizes and pore volumes of the catalysts. 15,16 At the same time, the number of active sites can also be increased by the large surface areas. Generally, iron oxides can be synthesized by a hard template method or by a soft template method.…”