• 文献标题:   Graphene-like Carbon from Calcium Hydroxide
  • 文献类型:   Article
  • 作  者:   BROWN AT, LIN J, VIZUET JP, THOMAS MC, BALKUS KJ
  • 作者关键词:  
  • 出版物名称:   ACS OMEGA
  • ISSN:   2470-1343
  • 通讯作者地址:  
  • 被引频次:   4
  • DOI:   10.1021/acsomega.1c04305
  • 出版年:   2021

▎ 摘  要

The development of inexpensive and environmentally friendly graphene-like carbon is critical for its integration into industrial products. This work highlights the production of graphene-like carbon structures from calcium hydroxide. The chemical vapor deposition conditions to grow graphitic carbon on a calcium hydroxide catalyst are reported. Acetylene, steam, and calcium hydroxide are used to grow a crumpled carbon morphology. The crumpled carbon resulted in a high surface area of 1276 m(2)/g and high electrical conductivity (>10(5) S/m). Additionally, the significance and origin of the C 1s X-ray photoelectron spectroscopy (XPS) pi-pi* plasmon loss peak as it is related to high electrical conductivity is reported. A unique mechanism for the catalytic process involving calcium acetylide is proposed. Several deposition times, steam concentration, and catalyst morphology were tested to synthesize a variety of carbon morphologies from calcium-based materials. Crumpled carbon, hollow nanospheres, bamboo-like carbon nanotubes, multi-walled carbon nanotubes, and graphene fiber morphologies were all formed using calcium-based catalysts. Multiple reaction conditions, a scaled reaction (300 g), and catalyst recyclability were investigated. Calcium-based materials were then used as catalysts for the growth of other graphene-like carbons.