Chemical Synthesis of Carbon Materials with Intriguing Nanostructure and Morphology

Lu, An‐Hui; Hao, Guang‐Ping; Sun, Qiang; Zhang, Xiangqian; Li, Wen‐Cui

doi:10.1002/9783527648160.ch7

Cited by 15 publications

(18 citation statements)

References 250 publications

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“…As a result, the negative replica of the template is obtained. Templates commonly used are zeolites, silicas, porous glass, and porous concrete [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. Among the discussed materials, porous concrete has been proven to be a most promising template.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Porous Carbon Monoliths Using Hard Templates

et al. 2016

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The preparation of porous carbon monoliths with a defined shape via template-assisted routes is reported. Monoliths made from porous concrete and zeolite were each used as the template. The porous concrete-derived carbon monoliths exhibited high gravimetric specific surface areas up to 2000 m2·g−1. The pore system comprised macro-, meso-, and micropores. These pores were hierarchically arranged. The pore system was created by the complex interplay of the actions of both the template and the activating agent as well. On the other hand, zeolite-made template shapes allowed for the preparation of microporous carbon monoliths with a high volumetric specific surface area. This feature could be beneficial if carbon monoliths must be integrated into technical systems under space-limited conditions.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Porous Carbon Monoliths Using Hard Templates

et al. 2016

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“…Nano‐structured carbon materials have promising applications in catalysis, adsorption, separation and electrode materials, and so on, due to their excellent morphology‐related properties . Up to date, various nano‐structured carbon materials including spheres, tubes, fibers, sheets have been reported .…”

Section: Background and Originality Contentmentioning

confidence: 99%

Nano‐structured Hollow Carbon Materials from a Non‐isothermal Chemical Vapor Deposition of Polyphenols

Cai

Yang

et al. 2020

Chin. J. Chem.

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of main observation and conclusion Pyrogallic acid (PG) was used as a modeling carbon source in fabricating nano-structured hollow carbon materials (HCMs) by a chemical vapor deposition (CVD) method. We found that non-isothermal deposition can improve the integrity of the obtained HCMs. The different pyrolyzed species from PG under varied temperatures lead to the temperature-dependent deposition yield, graphitization degree and morphology of the HCMs. HCMs including hollow spheres of varied sizes, cubic boxes with yolk-shell structure, nanotubes, mesoporous particles and double-shelled fibers, were prepared by using different templates, demonstrating the universality of this strategy. The carbon source has been extended to other plant polyphenols. The abundant and renewable solid precursors for CVD method endow this strategy excellent operation safety, improved storage and transportation convenience and low cost, and would boost the production of morphology-and size-controlled HCMs and their applications in the fields such as water treatment, electrode materials, adsorbent, drug delivery, and so forth.

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“…Template-based methods have been considered the best for the synthesis of porous carbon materials with designed pore architecture and with control over the pore size distribution [ 6 , 7 ]. However, this requires synthesis in multiple steps, which results in a time-consuming procedure and low yield [ 8 , 9 ]. Among the various fabrication methods, electrospinning technology has emerged in recent years as a simple and effective approach to produce nanofibers with high surface area, from either polymer solutions or melts [ 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Pore-Structure-Optimized CNT-Carbon Nanofibers from Starch for Rechargeable Lithium Batteries

et al. 2016

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Porous carbon materials are used for many electrochemical applications due to their outstanding properties. However, research on controlling the pore structure and analyzing the carbon structures is still necessary to achieve enhanced electrochemical properties. In this study, mesoporous carbon nanotube (CNT)-carbon nanofiber electrodes were developed by heat-treatment of electrospun starch with carbon nanotubes, and then applied as a binder-free electrochemical electrode for a lithium-ion battery. Using the unique lamellar structure of starch, mesoporous CNT-carbon nanofibers were prepared and their pore structures were controlled by manipulating the heat-treatment conditions. The activation process greatly increased the volume of micropores and mesopores of carbon nanofibers by etching carbons with CO2 gas, and the Brunauer-Emmett-Teller (BET) specific area increased to about 982.4 m2·g−1. The activated CNT-carbon nanofibers exhibited a high specific capacity (743 mAh·g−1) and good cycle performance (510 mAh·g−1 after 30 cycles) due to their larger specific surface area. This condition presents many adsorption sites of lithium ions, and higher electrical conductivity, compared with carbon nanofibers without CNT. The research suggests that by controlling the heat-treatment conditions and activation process, the pore structure of the carbon nanofibers made from starch could be tuned to provide the conditions needed for various applications.

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Chemical Synthesis of Carbon Materials with Intriguing Nanostructure and Morphology

Cited by 15 publications

References 250 publications

Synthesis of Porous Carbon Monoliths Using Hard Templates

Synthesis of Porous Carbon Monoliths Using Hard Templates

Nano‐structured Hollow Carbon Materials from a Non‐isothermal Chemical Vapor Deposition of Polyphenols

Pore-Structure-Optimized CNT-Carbon Nanofibers from Starch for Rechargeable Lithium Batteries

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