In situ solution plasma synthesis of silver nanoparticles supported on nitrogen-doped carbons with enhanced oxygen reduction activity

Gasidit Panomsuwan, Jidapa Chantaramethakul, Chayanaphat Chokradjaroen, Takahiro Ishizaki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Silver nanoparticles supported on nitrogen-doped carbons (Ag/NC) were in situ synthesized by a solution plasma process. In the solution plasma, Ag nanoparticles were produced via the sputtering of Ag electrode, while the NC supports were simultaneously synthesized from 2-cyanopyridine (C 6 H 4 N 2 ). The results of the characterization show that Ag nanoparticles had good crystallinity and the NC supports possessed an amorphous structure. The oxygen reduction reaction (ORR) catalyzed on Ag/NC proceeded via the co-existence of two and four-electron pathways in alkaline solution, with the four-electron pathway being found to be more dominant. An enhanced ORR activity of Ag/NC was attributed to the synergistic effect of Ag nanoparticles and NC supports. Moreover, Ag/NC exhibited long-term durability and high resistance to methanol oxidation in comparison with the commercial Pt/C catalyst.

Original languageEnglish
Pages (from-to)135-139
Number of pages5
JournalMaterials Letters
Volume251
DOIs
Publication statusPublished - 2019 Sep 15

Fingerprint

Silver
Nitrogen
Carbon
silver
Oxygen
Nanoparticles
Plasmas
nitrogen
nanoparticles
carbon
oxygen
synthesis
Electrons
high resistance
durability
Sputtering
Methanol
crystallinity
Durability
electrons

Keywords

  • Electrocatalyst
  • Nitrogen-doped carbon
  • Oxygen reduction reaction
  • Silver nanoparticles
  • Solution plasma

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

In situ solution plasma synthesis of silver nanoparticles supported on nitrogen-doped carbons with enhanced oxygen reduction activity. / Panomsuwan, Gasidit; Chantaramethakul, Jidapa; Chokradjaroen, Chayanaphat; Ishizaki, Takahiro.

In: Materials Letters, Vol. 251, 15.09.2019, p. 135-139.

Research output: Contribution to journalArticle

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AU - Ishizaki, Takahiro

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N2 - Silver nanoparticles supported on nitrogen-doped carbons (Ag/NC) were in situ synthesized by a solution plasma process. In the solution plasma, Ag nanoparticles were produced via the sputtering of Ag electrode, while the NC supports were simultaneously synthesized from 2-cyanopyridine (C 6 H 4 N 2 ). The results of the characterization show that Ag nanoparticles had good crystallinity and the NC supports possessed an amorphous structure. The oxygen reduction reaction (ORR) catalyzed on Ag/NC proceeded via the co-existence of two and four-electron pathways in alkaline solution, with the four-electron pathway being found to be more dominant. An enhanced ORR activity of Ag/NC was attributed to the synergistic effect of Ag nanoparticles and NC supports. Moreover, Ag/NC exhibited long-term durability and high resistance to methanol oxidation in comparison with the commercial Pt/C catalyst.

AB - Silver nanoparticles supported on nitrogen-doped carbons (Ag/NC) were in situ synthesized by a solution plasma process. In the solution plasma, Ag nanoparticles were produced via the sputtering of Ag electrode, while the NC supports were simultaneously synthesized from 2-cyanopyridine (C 6 H 4 N 2 ). The results of the characterization show that Ag nanoparticles had good crystallinity and the NC supports possessed an amorphous structure. The oxygen reduction reaction (ORR) catalyzed on Ag/NC proceeded via the co-existence of two and four-electron pathways in alkaline solution, with the four-electron pathway being found to be more dominant. An enhanced ORR activity of Ag/NC was attributed to the synergistic effect of Ag nanoparticles and NC supports. Moreover, Ag/NC exhibited long-term durability and high resistance to methanol oxidation in comparison with the commercial Pt/C catalyst.

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