TY - JOUR
T1 - In situ solution plasma synthesis of silver nanoparticles supported on nitrogen-doped carbons with enhanced oxygen reduction activity
AU - Panomsuwan, Gasidit
AU - Chantaramethakul, Jidapa
AU - Chokradjaroen, Chayanaphat
AU - Ishizaki, Takahiro
N1 - Funding Information:
This work was financially supported by the Faculty of Engineering, Kasetsart University (Grant No. 60/11/MATE ).
Funding Information:
This work was financially supported by the Faculty of Engineering, Kasetsart University (Grant No. 60/11/MATE).
PY - 2019/9/15
Y1 - 2019/9/15
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 (C6H4N2). 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 (C6H4N2). 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.
KW - Electrocatalyst
KW - Nitrogen-doped carbon
KW - Oxygen reduction reaction
KW - Silver nanoparticles
KW - Solution plasma
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U2 - 10.1016/j.matlet.2019.05.052
DO - 10.1016/j.matlet.2019.05.052
M3 - Article
AN - SCOPUS:85065717137
SN - 0167-577X
VL - 251
SP - 135
EP - 139
JO - Materials Letters
JF - Materials Letters
ER -