Continuous batch synthesis with atmospheric-pressure microwave plasmas.

ABSTRACT: Plasmas under atmospheric pressure offer a high-temperature environment for material synthesis, but electrode ablation compromises purity. Here, we introduce an atmospheric-pressure microwave plasma (AMP) operated without electrodes to overcome the existing limitations in pure material synthesis. The distribution of the electrostatic field intensity inside a waveguide during AMP excitation was examined via electrostatic field simulations. The lateral and radial gas temperature distributions were also studied using optical emission spectroscopy. The AMP exhibited a uniform ultrahigh temperature (9,000 K), a large volume (10²-10⁴ cm³), and a response time on the millisecond level. AMP efficiently synthesized silicon nanoparticles, graphene, and graphene@Si-Fe

SUBMITTER: Jie Z 

PROVIDER: S-EPMC11342278 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature