Effects of Acid Treatment of Pt−Ni Alloy Nanoparticles@Graphene on the Kinetics of the Oxygen Reduction Reaction in Acidic and Alkaline Solutions

2010 ◽  
Vol 115 (2) ◽  
pp. 379-389 ◽  
Author(s):  
Ke Zhang ◽  
Qiaoli Yue ◽  
Guifen Chen ◽  
Yanling Zhai ◽  
Lei Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Acid Treatment ◽  
Reduction Reaction ◽  
Alkaline Solutions ◽  
Alloy Nanoparticles ◽  
Ni Alloy ◽  
Kinetics Of

Influence of Oxide on the Oxygen Reduction Reaction of Carbon-Supported Pt−Ni Alloy Nanoparticles

2009 ◽  
Vol 113 (45) ◽  
pp. 19732-19739 ◽  
Author(s):  
Tae-Yeol Jeon ◽  
Sung Jong Yoo ◽  
Yong-Hun Cho ◽  
Kug-Seung Lee ◽  
Soon Hyung Kang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alloy Nanoparticles ◽  
Ni Alloy

scholarly journals Synthesis of P- and N-doped carbon catalysts for the oxygen reduction reaction via controlled phosphoric acid treatment of folic acid

2019 ◽  
Author(s):  
Rieko Kobayashi ◽  
Takafumi Ishii ◽  
Yasuo Imashiro ◽  
Jun-ichi Ozaki
Keyword(s):  
Folic Acid ◽  
Phosphoric Acid ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Acid Treatment ◽  
Reduction Reaction ◽  
P Content ◽  
Orr Activity ◽  
Carbon Catalysts ◽  
Pyridinic N

Herein, we synthesized N- and P-doped carbons (PN-doped carbons) by controlled phosphoric acid treatment (CPAT) of folic acid (FA) and probed their ability to catalyze the oxygen reduction reaction at the cathode of a fuel cell. Precursors obtained by heating FA in the presence of phosphoric acid at temperatures of 400–1000 °C were further annealed at 1000 °C to afford PN-doped carbons. The extent of precursor P-doping was maximized at 700 °C, and the use of higher temperatures resulted in activation and increased porosity rather than in increased P content. The P/C atomic ratios of PN-doped carbons were well correlated with those of precursors, which indicated that CPAT was well suited for the preparation of PN-doped carbons. Carbon prepared using a CPAT temperature of 700 °C exhibited the highest oxygen reduction reaction (ORR) activity and was shown to contain –C–PO2 and –C–PO3 moieties as the major P species and pyridinic N as the major N species; moreover, no N–P bonds were detected. The presence of –C–PO2 and –C–PO3 units was concluded to decrease the work function and thus raise the Fermi level above the standard O2/H2O reduction potential, which resulted in enhanced ORR activity. Finally, CPAT was concluded to be applicable to the synthesis of PN-doped carbons from N-containing organic compounds other than FA.

Hierarchical confine of PtZn alloy nanoparticles and single-dispersed Zn atoms on COF@MOF-derived carbon towards efficient oxygen reduction reaction

2021 ◽  
Author(s):  
Yu Guo ◽  
Shuai Yang ◽  
Qing Xu ◽  
Ping Wu ◽  
Zheng Jiang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Metal Organic Frameworks ◽  
Reduction Reaction ◽  
Alloy Nanoparticles ◽  
Covalent Organic Frameworks ◽  
Metal Organic ◽  
Significant Attention

Covalent organic frameworks (COFs) and metal-organic frameworks (MOFs) are getting significant attention for enormous application because of their designable and controllable skeletons and porosities. The integrated materials of MOFs and...

Facile synthesis of Pd3Y alloy nanoparticles for electrocatalysis of the oxygen reduction reaction

2019 ◽  
Vol 320 ◽  
pp. 134563 ◽  
Author(s):  
Riccardo Brandiele ◽  
Vincenzo Amendola ◽  
Andrea Guadagnini ◽  
Gian Andrea Rizzi ◽  
Denis Badocco ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alloy Nanoparticles ◽  
Facile Synthesis
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