Facile synthesis of ZnO nanobullets by solution plasma without chemical additives

Kyusung Kim, Sangwoo Chae, Pil Gyu Choi, Toshio Itoh, Nagahiro Saito, Yoshitake Masuda

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


ZnO nano-bullets were synthesized using solution plasma from only Zn electrode in water without any chemical agents. In this sustainable synthesis system, the rapid quenching reaction at the interface between the plasma/liquid phases facilitates the fast formation of nano-sized materials. The coil-to-pin type electrode geometry, which overcomes the discharge interruption owing to the electrode gap broadening of the typical pin-to-pin type enables the synthesis of numerous nanomaterials through a stable discharge for 1 h. The as-prepared samples exhibited a high crystalline ZnO structure without post calcination, and the length and width were 71.8 and 29.1 nm, respectively. The main exposed facet of ZnO nano-bullets was the (100) crystal facet, but interestingly, the (101) facet was confirmed at the inclined surfaces in the edges. The (101) crystal facet has an asymmetric Zn and O atom arrangement, and it could result in a focused electron density area with relatively high reactivity. Therefore, ZnO nano-bullets are promising materials for applications in advanced technologies.

Original languageEnglish
Pages (from-to)26785-26790
Number of pages6
JournalRSC Advances
Issue number43
Publication statusPublished - 2021 Jul 16
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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