通过控制热处理气氛调节炭黑表面形貌

IF 6.9 2区 材料科学 Q2 CHEMISTRY, PHYSICAL
Koki Urita , Chiharu Urita , Hideki Tanaka , Fernando Vallejos-Burgos , Hiroo Notohara , Takuya Araki , Keiji Horio , Hiroshi Furukawa , Masayuki Yoshida , Isamu Moriguchi
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引用次数: 0

摘要

炭黑(CB)的表面结构主要取决于其制备和后处理条件。研究了热处理气氛(真空气氛、氢气气氛和惰性气体气氛)对炭黑表面形貌和化学成分的影响。详细的结构分析表明,真空处理通过微石墨键合和孔闭合促进了碳表面的显著平滑,而惰性和氢气处理表现出较小程度的键合。此外,氢处理有效地去除了含氧官能团(ocfg),部分抑制了微石墨键合,导致窄孔的形成。等等吸附热测量证实了这些结构变化,并强调了ocfg在阻碍N2分子在碳表面重排中的作用。这些发现表明,通过控制热处理气氛,碳表面性能具有可调性,为优化其在吸附、催化和储能等应用中的性能提供了途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Tuning carbon black surface morphology via controlled thermal treatment atmosphere

Tuning carbon black surface morphology via controlled thermal treatment atmosphere
The surface structure of carbon black (CB) is critically dependent on its preparation and post-treatment conditions. This study investigates the impact of thermal treatment atmosphere – vacuum, hydrogen, and inert gas – on the surface morphology and chemical composition of CB. Detailed structural analysis revealed that vacuum treatment promotes significant smoothing of the carbon surface through micrographite bonding and pore closure, while inert and hydrogen gas treatments exhibited a lesser degree of bonding. Furthermore, hydrogen treatment effectively removed oxygen-containing functional groups (OCFGs) and partially suppressed micrographite bonding, leading to the formation of narrow pores. Isosteric heat of adsorption measurements confirmed these structural changes and highlighted the role of OCFGs in hindering N2 molecule rearrangement on the carbon surface. These findings demonstrate the tunability of carbon surface properties through controlled thermal treatment atmospheres, offering a pathway for optimizing its performance in applications such as adsorption, catalysis, and energy storage.
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来源期刊
Applied Surface Science
Applied Surface Science 工程技术-材料科学:膜
CiteScore
12.50
自引率
7.50%
发文量
3393
审稿时长
67 days
期刊介绍: Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.
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