Self-assembly and metal-directed assembly of organic semiconductor aerogels and conductive carbon nanofiber aerogels with controllable nanoscale morphologies

Turner, Sean; Shevitski, Brian; Lorenzo, Maydelle; Marquez, James; Aloni, Shaul; Altoé, Virginia; Worsley, Marcus A.; Zettl, Alex

doi:10.1016/j.carbon.2019.07.039

Cited by 9 publications

(12 citation statements)

References 56 publications

(50 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the organic semiconductors, perylene tetracarboxyldiimide (PTCDI), is such an intriguing material. It has caught considerable attention in the research community due to the high electron affinity and ability to self-assemble into nanofibers [56,57]. The self-assembled nanofibers can be used as the templates or precursors for manufacturing carbon nanofiber aerogels through high temperature pyrolysis reactions.…”

Section: Template Derived Composite Carbon Nanofiber Aerogelsmentioning

confidence: 99%

“…Subsequent heat treatment at an even higher temperature of 2000 °C in He for 2 h produced the highly crystalline CNF aerogels. Recently, Turner et al [57] also used the self-assembling method for producing highly crystalline or graphitized carbon nanofiber aerogels as can be schematically shown in Figure 16 which is adopted from [57]. First, perylene-3,4,9,10-tetracarboxylic diimide (PTCDI) nanofiber aerogels were generated by preparing a suspension of perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) in water with the concentration of PTCDA as 10 wt %.…”

Section: Template Derived Composite Carbon Nanofiber Aerogelsmentioning

confidence: 99%

“…In literature [57], incorporating metal salts into the PTCDA suspension during self-assembling and gelation was also performed. Generally, the addition of a metal salt, for example nickel chloride, can generate metallic nickel catalyst during pyrolysis in inert gas to increase the catalytic activity upon the formation of composite carbon nanofiber aerogels.…”

Section: Template Derived Composite Carbon Nanofiber Aerogelsmentioning

confidence: 99%

See 2 more Smart Citations

Advances in Manufacturing Composite Carbon Nanofiber-Based Aerogels

Gan

2020

J. Compos. Sci.

View full text Add to dashboard Cite

This article provides an overview on manufacturing composite carbon nanofiber-based aerogels through freeze casting technology. As known, freeze casting is a relatively new manufacturing technique for generating highly porous structures. During the process, deep cooling is used first to rapidly solidify a well-dispersed slurry. Then, vacuum drying is conducted to sublimate the solvent. This allows the creation of highly porous materials. Although the freeze casting technique was initially developed for porous ceramics processing, it has found various applications, especially for making aerogels. Aerogels are highly porous materials with extremely high volume of free spaces, which contributes to the characteristics of high porosity, ultralight, large specific surface area, huge interface area, and in addition, super low thermal conductivity. Recently, carbon nanofiber aerogels have been studied to achieve exceptional properties of high stiffness, flame-retardant and thermal-insulating. The freeze casting technology has been reported for preparing carbon nanofiber composite aerogels for energy storage, energy conversion, water purification, catalysis, fire prevention etc. This review deals with freeze casting carbon nanofiber composite materials consisting of functional nanoparticles with exceptional properties. The content of this review article is organized as follows. The first part will introduce the general freeze casting manufacturing technology of aerogels with the emphasis on how to use the technology to make nanoparticle-containing composite carbon nanofiber aerogels. Then, modeling and characterization of the freeze cast particle-containing carbon nanofibers will be presented with an emphasis on modeling the thermal conductivity and electrical conductivity of the carbon nanofiber network aerogels. After that, the applications of the carbon nanofiber aerogels will be described. Examples of energy converters, supercapacitors, secondary battery electrodes, dye absorbents, sensors, and catalysts made from composite carbon nanofiber aerogels will be shown. Finally, the perspectives to future work will be presented.

show abstract

Section: Template Derived Composite Carbon Nanofiber Aerogelsmentioning

confidence: 99%

Section: Template Derived Composite Carbon Nanofiber Aerogelsmentioning

confidence: 99%

Section: Template Derived Composite Carbon Nanofiber Aerogelsmentioning

confidence: 99%

See 1 more Smart Citation

Advances in Manufacturing Composite Carbon Nanofiber-Based Aerogels

Gan

2020

J. Compos. Sci.

View full text Add to dashboard Cite

show abstract

“…[14,15] Due to the tremendous applications of the ternary complexes in various fields, such as drug delivery systems, [16] sensors, [17] catalysis, [18,19] proton conductivity, [20] and biomedical applications especially for nitrilotriacetic acid as ligand play important role in the biological field, [21,22] the synthesis of the nanoscale materials is widely used on the industry scale nowadays due to their catalytic, optical, semiconductive, and magnetic properties as well as its medical applications in human diseases treatment, drug delivery, and others. [23][24][25] The nanocomplexes have chemical, physical, and biological applications. [9,26] Nevertheless, literature has not afforded a clear example of the synthesis of nanoscale ternary complexes especially in dimer form although; few researches have alleged to have done so.…”

Section: Introductionmentioning

confidence: 99%

Macro‐ and nano‐oligomers ternary metal complexes preparation, structural elucidation: Antimicrobial, anticancer activities, and mechanistic study of Cu nanocomplexes on liver carcinoma

Rabie

Khalil

Elaasser

et al. 2021

Applied Organom Chemis

View full text Add to dashboard Cite

A new binuclear transition metal complexes of Co (II) and Cu (II) have been synthesized in both bulk and nanosized formations. The complexes were synthesized by the reaction between equimolar quantities of the metal sulfate with nitrilotriacetic acid and creatine. The nanosized forms are controlled by using (CTAB). Characterization of the nanocomplexes has been done using a transmission electron microscope (TEM) and X‐ray diffraction. This technique is considered a novel approach to the synthesis of the nanoternary complexes. The Co (II) and Cu (II) complexes displayed distorted dimeric octahedral and tetrahedral structures, respectively. The prepared metal complexes were investigated by electronic spectral analysis, magnetic susceptibility measurement, infrared spectra, thermal gravimetric analysis (TGA), UV–visible spectra, and mass spectra. The molecular weights of the dimer complexes are measured by GPC (Gel Permeation Chromatography). Characterization of the obtained complexes showed that the NTA ligand coordinates with metal ions in tridentate mode (one N and two COO−) after deprotonation, the creatine molecule coordinates through the carboxylate group, while the dimeric structure of these complexes formed with one of the sulfate groups which coordinates as a bridged bidentate ligand. Investigation of the biological activity of these complexes, as well as their hepatocellular carcinoma (HepG2) cell line inhibitory, has also been achieved.

show abstract

“…On the other hand, we need to improve the affinity between the skeleton material and the PCMs, so that the PCMs can be better to impregnate in the skeleton materials. Aerogels as light porous solid materials, have extremely high porosity and large specific surface area, which have great potential in insulation/thermal/acoustic/electrical insulation [14][15][16][17]. Zhou et al [18] worked on ssPCMs by infiltrating erythritol into the SiO 2 aerogels.…”

Section: Introductionmentioning

confidence: 99%

Shape-stabilized phase change materials based on superhydrophobic polymethylsilsesquioxane aerogels with extremely high paraffin loading for energy storage

et al. 2020

View full text Add to dashboard Cite

Organic phase change materials (PCMs) play an important role in heat energy storage, but they are also limited by the leakage problem in the process of phase change. Herein, shape-stabilized composite PCMs (ssPCMs) are successfully obtained by impregnating paraffin (PA) into the polymethylsilsesquioxane (PMSQ) aerogels. Due to abundant porosity, light weight, inherent superhydrophobic of PMSQ aerogels, lipophilic PA can be loaded into aerogels with a high PCMs loading rate up to 876% without alkylation process. Under the action of aerogel pores, PA in ssPCMs has high degree of crystallinity. The three-dimensional network structure of aerogels can effectively support the melting PA, and there is almost no leakage problem under the strong capillary force and surface tension. The ssPCMs show high latent heat in the range of 117.2 J/g to 122.9 J/g and excellent thermal stability and recyclability where their latent heat nearly remains 97% after 50 times of melting-crystallization cycles. More interestingly, when the temperature reaches above the melting point of PA, the ssPCMs changes from white to translucent. Thus, the synthesized ssPCMs exhibit considerable potential in energy storage applications, temperature intelligent response, thermal regulation.

show abstract

Self-assembly and metal-directed assembly of organic semiconductor aerogels and conductive carbon nanofiber aerogels with controllable nanoscale morphologies

Abstract: Self-assembly and metal-directed assembly of organic semiconductor aerogels and conductive carbon nanofiber aerogels with controllable nanoscale morphologies, Carbon (2019),

Cited by 9 publications

References 56 publications

Advances in Manufacturing Composite Carbon Nanofiber-Based Aerogels

Advances in Manufacturing Composite Carbon Nanofiber-Based Aerogels

Macro‐ and nano‐oligomers ternary metal complexes preparation, structural elucidation: Antimicrobial, anticancer activities, and mechanistic study of Cu nanocomplexes on liver carcinoma

Shape-stabilized phase change materials based on superhydrophobic polymethylsilsesquioxane aerogels with extremely high paraffin loading for energy storage

Contact Info

Product

Resources

About