A General Route to Flame Aerosol Synthesis and In Situ Functionalization of Mesoporous Silica

Liu, Shuo; Dun, Chaochao; Chen, Junjie; Rao, Satyarit; Shah, Mihir; Wei, Jilun; Chen, Kaiwen; Xuan, Zhengxi; Kyriakidou, Eleni A.; Urban, Jeffrey J.; Swihart, Mark T.

doi:10.1002/ange.202206870

Cited by 3 publications

(3 citation statements)

References 75 publications

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“…B) HAADF‐STEM and elemental mapping images of Pt/SiO 2 with hollow structure (adapted with permission. [ 71 ] Copyright 2022, John Wiley and Sons Ltd). C) TEM image and element mapping images of the hollow‐structured silica composites ZIF‐8@SiO 2 (adapted with permission.…”

Section: Synthesis and Modification Of Msnsmentioning

confidence: 99%

“…[ 70 ] Recently, Mark T. Swihart reported for the first time a flame aerosol synthesis method for a class of mesoporous silica with a hollow structure (Figure 2B) and a specific surface area exceeding 1000 m 2 g −1 . [ 71 ] The synthesis is based on an unconventional flame reactor configuration to produce mesoporous silica nanoshells in a continuous flame aerosol process. During the synthesis, the H 2 ‐rich flame generates a high temperature (600–850 °C) in the reaction chamber, which drives the evaporation and reaction.…”

Section: Synthesis and Modification Of Msnsmentioning

confidence: 99%

mentioning

confidence: 99%

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Mesoporous Silica Nanoparticles‐Based Nanoplatforms: Basic Construction, Current State, and Emerging Applications in Anticancer Therapeutics

Feng

Liao

et al. 2023

Adv Healthcare Materials

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In recent years, researchers are developing novel nanoparticles for diagnostic applications using imaging techniques and for therapeutic purposes through drug delivery techniques. The unique physical and chemical properties of mesoporous silica nanoparticles (MSNs) make it possible to integrate a variety of commonly used therapeutic and imaging agents to construct a multimodal synergistic anticancer drug delivery system. Herein, recent advances in MSNs synthesis for drug delivery and smart response applications are reviewed. First, synthetic strategies for the fabrication of ordered MSNs, hollow MSNs, core-shell structured MSNs, dendritic MSNs, and biodegradable MSNs are outlined. Then, the recent research progress in designing functional MSN materials with various controlled release mechanisms in anticancer therapy is discussed, and new properties are introduced to suggest the latest design requirements as drug delivery materials. The review also highlights significant achievements in bioimaging using MSNs and their multifunctional counterparts as delivery vehicles. Finally, personal views on key directions for future work in this area are presented.

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Section: Synthesis and Modification Of Msnsmentioning

confidence: 99%

Section: Synthesis and Modification Of Msnsmentioning

confidence: 99%

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Mesoporous Silica Nanoparticles‐Based Nanoplatforms: Basic Construction, Current State, and Emerging Applications in Anticancer Therapeutics

Feng

Liao

et al. 2023

Adv Healthcare Materials

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A Regiospecific Co-Assembly Method to Functionalize Ordered Mesoporous Metal Oxides with Customizable Noble Metal Nanocrystals

Li,

Xue,

Deng

et al. 2024

ACS Cent. Sci.

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An efficient regiospecific co-assembly (RSCA) strategy is developed for general synthesis of mesoporous metal oxides with pore walls precisely decorated by highly dispersed noble metal nanocrystals with customized parameters (diameter and composition). It features the rational utilization of the specific interactions between hydrophilic molecular precursors, hydrophobic noble metal nanocrystals, and amphiphilic block copolymers, to achieve regiospecific co-assembly as confirmed by molecular dynamics simulations. Through this RSCA strategy, we achieved a controllable synthesis of a variety of functional mesoporous metal oxide composites (e.g., WO 3 , ZrO 2 , TiO 2 ) with in-pore walls precisely decorated by various noble metal nanocrystals of tailored components (Au, Ag, Pt, Pd and their nanoalloys) and sizes (3.0−8.5 nm). As an example, the obtained mesoporous 0.5-Ag/WO 3 material has a highly interconnected mesoporous structure and uniform 6.5 nm Ag nanocrystals confined in the mesopores, showing superior NO sensing performances with high sensitivity, good selectivity, and stability at low working temperature (127 °C). In situ spectroscopy study indicates that the NO sensing process involves a unique gas−solid reaction, where NO molecules are converted into chemisorbed NO x species over the sensitive materials, inducing a remarkable change of resistance and outputting a dramatic response signal.

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Reforming Methane with CO2 over Hierarchical Porous Silica-Supported Nickel Catalysts Modified with Lanthanum Oxide

Yuan

et al. 2023

International Journal of Energy Research

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Hierarchical porous silica-supported nickel catalysts modified with different amounts of lanthanum (La) were synthesized via “one-pot” method using cetyltrimethylammonium bromide as template, urea as precipitant, and tetraethyl orthosilicate as silica source. Their catalytic performances were evaluated in dry reforming with methane under different conditions (La loading, reaction temperature, and time on stream). The synthesized and spent catalysts were extensively characterized by ICP, physisorption, chemisorption, XRD, TPR, XPS, HAADF-TEM, TPH, Raman’s spectroscopy, and TG analysis. The impact of lanthanum amount on the catalytic performance, sintering, and carbon deposition was discussed. Compared to unmodified catalyst, La promoter induced the nickel nanoparticles with larger crystallite sizes and weakened the metal-support interaction as well as the formation of 1 : 1 nickel-phyllosilicate, leading to the metal sintering increasing in the order Ni1.5La/SiO2 < Ni3.0La/SiO2 < Ni4.5La/SiO2. The modified catalysts exhibited better carbon resistance, which was significantly enhanced with increasing La content. Despite this, the stability increased following the sequence of Ni3.0La/SiO2 < Ni4.5La/SiO2 < Ni1.5La/SiO2. Ni1.5La/SiO2 displayed the best stability at 750°C within 10 h stability test, with CH4 conversion dropping from 61.3 to 58.0%. The deactivation reason for Ni1.5La/SiO2 was mainly the carbon deposition, while that for Ni3.0La/SiO2 and Ni4.5La/SiO2 was the metal sintering. These results emphasized that the activity and stability in the NiLa/SiO2 catalysts for the dry reforming of methane depended on two important factors, the metal-support interaction and the particles size of nickel, providing the necessity and sufficiency to balance two attributes.

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A General Route to Flame Aerosol Synthesis and In Situ Functionalization of Mesoporous Silica

Cited by 3 publications

References 75 publications

Mesoporous Silica Nanoparticles‐Based Nanoplatforms: Basic Construction, Current State, and Emerging Applications in Anticancer Therapeutics

Mesoporous Silica Nanoparticles‐Based Nanoplatforms: Basic Construction, Current State, and Emerging Applications in Anticancer Therapeutics

A Regiospecific Co-Assembly Method to Functionalize Ordered Mesoporous Metal Oxides with Customizable Noble Metal Nanocrystals

Reforming Methane with CO2 over Hierarchical Porous Silica-Supported Nickel Catalysts Modified with Lanthanum Oxide

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