Pore Engineering for High Performance Porous Materials

Zhao, Dongyuan; Zhao, Tiancong

doi:10.1021/acscentsci.3c00916

Cited by 18 publications

(4 citation statements)

References 27 publications

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“…Porous materials feature interconnected porous networks with pore sizes varying from nanoscale to macroscale. According to the pore size, porous materials can be categorized into micropores (≤2 nm), mesopores (>2 nm and ≤50 nm), and macropores (>50 nm) [ 3 ]. The scale, morphology, and distribution of pores result in diverse mechanical properties and functionalities [ 4 ].…”

Section: Structure and Functionmentioning

confidence: 99%

Advanced Applications of Porous Materials in Triboelectric Nanogenerator Self-Powered Sensors

Duan,

Cai,

Chen

et al. 2024

Sensors

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Porous materials possess advantages such as rich pore structures, a large surface area, low relative density, high specific strength, and good breathability. They have broad prospects in the development of a high-performance Triboelectric Nanogenerator (TENG) and self-powered sensing fields. This paper elaborates on the structural forms and construction methods of porous materials in existing TENG, including aerogels, foam sponges, electrospinning, 3D printing, and fabric structures. The research progress of porous materials in improving TENG performance is systematically summarized, with a focus on discussing design strategies of porous structures to enhance the TENG mechanical performance, frictional electrical performance, and environmental tolerance. The current applications of porous-material-based TENG in self-powered sensing such as pressure sensing, health monitoring, and human–machine interactions are introduced, and future development directions and challenges are discussed.

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Section: Structure and Functionmentioning

confidence: 99%

Advanced Applications of Porous Materials in Triboelectric Nanogenerator Self-Powered Sensors

Duan,

Cai,

Chen

et al. 2024

Sensors

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“…The typical synthesis of mesoporous metal oxides usually includes two main steps: the formation of mesostructure using a metal precursor and template (hard-template or soft-template) and the subsequent high-temperature crystallization as well as template removal. − The hard-template method, similar to nanocasting, starts with infiltrating precursors into ordered mesoporous carbon or mesoporous silica (MCM-41, KIT-6, SBA-15) and then etching off the template to obtain the inverse mesostructure . Gu et al synthesized mesoporous ZrO 2 as a hard template, in which the surface-modified functional groups help to enhance the interaction between the template and the precursor.…”

Section: Introductionmentioning

confidence: 99%

A Novel Molten Salt Mediated Synthesis of Mesoporous Metal Oxides with High Crystallization

Ma,

Lu,

Zhou

et al. 2024

ACS Cent. Sci.

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The controlled synthesis of mesoporous metal oxides remains a great challenge because the uncontrolled assembly process and high-temperature crystallization can easily destroy the mesostructure. Herein, we develop a facile, versatile, low-cost, and controllable molten salt assisted assembly strategy to synthesize mesoporous metal oxides (e.g., CeO 2 , ZrO 2 , SnO 2 , Li 2 TiO 3 ) with high surface area (115−155 m 2 / g) and uniform mesopore size (3.0 nm). We find this molten salt mediated assembly enables the desolvation of the precursors and forms bare metal ions, enhances their coordination interaction with the surfactant, and promotes their assembly into a mesostructure. Furthermore, the molten salt assisted crystallization process can lower the collision probability of the target metal atom, inhibit its further growth into large crystals, and achieve a well-maintained mesostructure with high crystallization. Furthermore, this method can be expanded to synthesize various structured mesoporous metal oxides, including hollow spheres, nanotubes, and nanosheets by introducing the carbon template. The obtained mesoporous CeO 2 microspheres loaded with Cu species exhibit excellent antibacterial performance and superior catalytic activity for the hydrogenation of nitrophenol with high conversion and cycling stability.

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“…Because of such versatile applications, porous materials have become an important research topic for decades. A brief introduction of different synthesis methods of generating micro-, meso-, and macro-porous materials with different properties is given in ref . There exist also several reviews describing specific application-driven requirements such as specific large absorption areas, high surface to volume ratios, − and prospective developments .…”

Section: Introductionmentioning

confidence: 99%

Entanglement-Stabilized Nanoporous Polymer Films Made by Mechanical Deformation

Hsu,

Kremer

2024

Macromolecules

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We present a new simulation-guided process to create nanoporous materials, which does not require specific chemical treatment and solely relies on mechanical deformation of pure highly entangled homopolymer films. Starting from fully equilibrated freestanding thick polymer melt films, we apply a simple "biaxial expansion" deformation. Upon expansion holes form, which are prevented from growing and coalescing beyond a characteristic size due to the entanglement structure of the melt. We investigate the local morphology, the void formation upon expansion, and their stabilization. The dependence of the average void (pore) size and void fraction (porosity) on the total strain and subsequent relaxation is investigated. Furthermore, the stabilization of the porous structure of the thin expanded films through cooling below the glass transition temperature T g is discussed.

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Pore Engineering for High Performance Porous Materials

Cited by 18 publications

References 27 publications

Advanced Applications of Porous Materials in Triboelectric Nanogenerator Self-Powered Sensors

Advanced Applications of Porous Materials in Triboelectric Nanogenerator Self-Powered Sensors

A Novel Molten Salt Mediated Synthesis of Mesoporous Metal Oxides with High Crystallization

Entanglement-Stabilized Nanoporous Polymer Films Made by Mechanical Deformation

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