Directly ambient pressure dried robust bridged silsesquioxane and methylsiloxane aerogels: effects of precursors and solvents

Chen, Dangjia; Gao, Hongyi; Li, Panpan; Huang, Pei; Huang, Xiubing

doi:10.1039/c8ra08646j

Cited by 12 publications

(6 citation statements)

References 42 publications

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“…However, their presence is detrimental to the resistance of the beads. Thus, gradual solvent exchange with ethanol has been carried out [40]. The resulting ZIF-67/CS cryogels do not show any noticeable damage or structural collapse, as evidenced by the preservation of their diameter during the passage from alcogels to cryogels (Fig.…”

Section: Resultsmentioning

confidence: 99%

Hierarchically porous ZIF-67/chitosan beads with high surface area and strengthened mechanical properties: Application to CO2 storage

Hammi

Couzon²,

Loiseau³

et al. 2023

Materials Today Sustainability

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Section: Resultsmentioning

confidence: 99%

Hierarchically porous ZIF-67/chitosan beads with high surface area and strengthened mechanical properties: Application to CO2 storage

Hammi

Couzon²,

Loiseau³

et al. 2023

Materials Today Sustainability

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“…It can be seen from the curves that there is an obvious large peak in each curve, indicating the pore size distribution is relatively centralized. [ 26 ] There are still small peaks on the curves that are not obvious, due to mercury crushing the aerogel. [ 27 ] The size distribution in the range of 0.03–300 µm is also inserted in Figure 3.…”

Section: Resultsmentioning

confidence: 99%

Lightweight Cellulose Nanofibril/Reduced Graphene Oxide Aerogels with Unidirectional Pores for Efficient Electromagnetic Interference Shielding

Han

Jiang

et al. 2021

Adv Materials Inter

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Lightweight and compressible aerogels have been widely considered as promising materials for electromagnetic interference (EMI) shielding. Herein, a lightweight cellulose nanofibril/reduced graphene oxide carbon aerogel fabricated by unidirectional freeze‐drying and pyrolysis processes is reported. The results show that the aerogels with unidirectionally aligned pores possess better compression resilience and EMI shielding performance in the radial direction. The unidirectional aerogel with low density (≈0.0058 g cm−3) exhibits a high EMI shielding effectiveness (SE) of ≈33 dB at 8.2–12.4 GHz and a specific EMI SE of 5759 dB cm3 g−1. Therefore, the fabricated aerogel demonstrates a promising potential in the field of next‐generation EMI shielding materials.

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“…They also showed good absorption for different organic liquids. To further study the influence of precursor and solvent, Chen and coworkers synthesized two types of aerogels by reacting m-phthalaldehyde (MPA) with APTES and APDEMS dried at ambient pressure [176]. MPA/APTE-based aerogels were hydrophilic with small particle sizes.…”

Section: Bridged Polysilsesquioxanesmentioning

confidence: 99%

“…MPA/APTES APD Low density (0.112-0.149 g/cm 3 ) with Young's modulus of 0.12-0.16 MPa. [176] MPA/APDEMS APD Density of 0.08-0.064 g/cm 3 with Young's modulus of 1.12-1.14 MPa, thermal conductivity of 0.051-0.058 W/mK. [176] MPTES/BMI VD Hydrophobic, low density (0.09 g/cm 3 ), thermal conductivity of 0.044 W/mK, elastic modulus of 10.3-25.8 kPa.…”

Section: Bridged Polysilsesquioxanesmentioning

confidence: 99%

Evolutionary Progress of Silica Aerogels and Their Classification Based on Composition: An Overview

et al. 2023

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Aerogels are highly porous materials with fascinating properties prepared using sol-gel chemistry. Due to their unique physical and chemical properties, aerogels are recognized as potential candidates for diverse applications, including thermal insulation, sensor, environmental remediation, etc. Despite these applications, aerogels are not routinely found in our daily life because they are fragile and have highly limited scale-up productions. It remains extremely challenging to improve the mechanical properties of aerogels without adversely affecting their other properties. To boost the practical applications, it is necessary to develop efficient, low-cost methods to produce aerogels in a sustainable way. This comprehensive review surveys the progress in the development of aerogels and their classification based on the chemical composition of the network. Recent achievements in organic, inorganic, and hybrid materials and their outstanding physical properties are discussed. The major focus of this review lies in approaches that allow tailoring of aerogel properties to meet application-driven requirements. We begin with a brief discussion of the fundamental issues in silica aerogels and then proceed to provide an overview of the synthesis of organic and hybrid aerogels from various precursors. Organic aerogels show promising results with excellent mechanical strength, but there are still several issues that need further exploration. Finally, growing points and perspectives of the aerogel field are summarized.

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Directly ambient pressure dried robust bridged silsesquioxane and methylsiloxane aerogels: effects of precursors and solvents

Abstract: Aerogels prepared with different precursors and solvents using a facile procedure.

Cited by 12 publications

References 42 publications

Hierarchically porous ZIF-67/chitosan beads with high surface area and strengthened mechanical properties: Application to CO2 storage

Hierarchically porous ZIF-67/chitosan beads with high surface area and strengthened mechanical properties: Application to CO2 storage

Lightweight Cellulose Nanofibril/Reduced Graphene Oxide Aerogels with Unidirectional Pores for Efficient Electromagnetic Interference Shielding

Evolutionary Progress of Silica Aerogels and Their Classification Based on Composition: An Overview

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