A dual soft-template synthesis of hollow mesoporous silica spheres decorated with Pt nanoparticles as a CO oxidation catalyst

Li, Yunqi; Bastakoti, Bishnu Prasad; Abe, Hideki; Liu, Zongwen; Minett, Andrew I.; ALOthman, Zeid A.; Yamauchi, Yusuke

doi:10.1039/c5ra17340j

Cited by 12 publications

(8 citation statements)

References 33 publications

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“…Hence, the template methods are the preferential synthetic route for the construction of complicated hierarchical hollow nanostructures (e.g., encapsulated, multishelled, etc.) . Hard‐template method is a straightforward and universal way to attain hollow interiors using the materials with well‐defined morphologies, such as polymer‐based spheres (e.g., polystyrene (PS), resin, etc.…”

Section: Functionalization Strategies For Synthesis and Catalysis Of mentioning

confidence: 99%

Functionalization of Hollow Nanomaterials for Catalytic Applications: Nanoreactor Construction

et al. 2018

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Hollow nanomaterials have attracted a broad interest in multidisciplinary research due to their unique structure and preeminent properties. Owing to the high specific surface area, well-defined active site, delimited void space, and tunable mass transfer rate, hollow nanostructures can serve as excellent catalysts, supports, and reactors for a variety of catalytic applications, including photocatalysis, electrocatalysis, heterogeneous catalysis, homogeneous catalysis, etc. Based on state-of-the-art synthetic methods and characterization techniques, researchers focus on the purposeful functionalization of hollow nanomaterials for catalytic mechanism studies and intricate catalytic reactions. Herein, an overview of current reports with respect to the catalysis of functionalized hollow nanomaterials is given, and they are classified into five types of versatile strategies with a top-down perspective, including textual and composition modification, encapsulation, multishelled construction, anchored single atomic site, and surface molecular engineering. In the detailed case studies, the design and construction of hierarchical hollow catalysts are discussed. Moreover, since hollow structure offers more than two types of spatial-delimited sites, complicated catalytic reactions are elaborated. In summary, functionalized hollow nanomaterials provide an ideal model for the rational design and development of efficient catalysts.

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Section: Functionalization Strategies For Synthesis and Catalysis Of mentioning

confidence: 99%

Functionalization of Hollow Nanomaterials for Catalytic Applications: Nanoreactor Construction

et al. 2018

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“…HMS decorated with Pt nanoparticles was synthesized using a dual soft‐template system from a triblock copolymer [poly(styrene‐ b ‐2‐vinyl pyridine‐ b ‐ethylene oxide, PS‐ b ‐P2VP‐ b ‐PEO] and a cationic surfactant (CTAB), which could be used in high‐temperature CO oxidation ( Figure ).…”

Section: Advanced Applicationsmentioning

confidence: 99%

Section: Advanced Applicationsmentioning

confidence: 99%

Hollow Mesoporous Functional Hybrid Materials: Fascinating Platforms for Advanced Applications

Park¹,

Ha²

2017

Adv Funct Materials

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Functionalized hollow nano-and microspheres containing both hollow and mesoporous structures are fascinating materials for a broad range of applications, such as nanoparticle collectors, catalysis, drug delivery systems, immobilization of biomolecules, and the adsorption and separation of gas and pollutants, because of their empty interior. These hollow mesoporous silica materials are synthesized mainly via soft-and hard-templating routes and are usually modified with a range of organic functional groups (SH, NH 2 , CN, CH 3 , CC, benzene, fluorine linked organoalkylsilanes, and ethane-, amine, benzene, and biphenyl-bridged silanes) to improve their performance in many applications. This article outlines the most advanced applications of silica-based and functionalized hollow mesoporous materials that are reported in the last 3 years (January 2014-June 2017). The high applicability of hollow materials in various fields is discussed, including drug delivery and cancer therapy, bioimaging, adsorption/separation, catalysis, thermal and electrical insulators, anticorrosion, sensors, fuel cells, proton conductors, membrane, optics, superhydrophobic surfaces, and fire safety.

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“…15 In addition, heat treatment aer loading of platinum nanoparticles into porous silica induces aggregation of the nanoparticles, reducing their active surface area. 16,17 Metal-organic frameworks (MOFs) may be a good alternative to conventional porous silica materials because they do not require thermal treatment owing to their crystalline structure. Among MOFs, a zeolitic imidazolate framework (ZIF) has recently attracted much attention owing to its high surface area, well-ordered pore structures, easy synthesis, and high chemical and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Direct synthesis of platinum nanodots in ZIF-8/Fe₃O₄ core–shell hybrid nanoparticles

2017

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A dual soft-template synthesis of hollow mesoporous silica spheres decorated with Pt nanoparticles as a CO oxidation catalyst

Abstract: Hollow mesoporous silica spheres decorated with fine Pt nanoparticles are prepared through a dual soft-template system and used as a catalyst for high-temperature CO oxidation.

Cited by 12 publications

References 33 publications

Functionalization of Hollow Nanomaterials for Catalytic Applications: Nanoreactor Construction

Functionalization of Hollow Nanomaterials for Catalytic Applications: Nanoreactor Construction

Hollow Mesoporous Functional Hybrid Materials: Fascinating Platforms for Advanced Applications

Direct synthesis of platinum nanodots in ZIF-8/Fe₃O₄ core–shell hybrid nanoparticles

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A dual soft-template synthesis of hollow mesoporous silica spheres decorated with Pt nanoparticles as a CO oxidation catalyst

Abstract: Hollow mesoporous silica spheres decorated with fine Pt nanoparticles are prepared through a dual soft-template system and used as a catalyst for high-temperature CO oxidation.

Cited by 12 publications

References 33 publications

Functionalization of Hollow Nanomaterials for Catalytic Applications: Nanoreactor Construction

Functionalization of Hollow Nanomaterials for Catalytic Applications: Nanoreactor Construction

Hollow Mesoporous Functional Hybrid Materials: Fascinating Platforms for Advanced Applications

Direct synthesis of platinum nanodots in ZIF-8/Fe3O4 core–shell hybrid nanoparticles

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Direct synthesis of platinum nanodots in ZIF-8/Fe₃O₄ core–shell hybrid nanoparticles