scholarly journals Degradation by Hydrogen Peroxide of Metal-Nitrogen-Carbon Catalysts for Oxygen Reduction

2015 ◽  
Vol 162 (6) ◽  
pp. H403-H414 ◽  
Author(s):  
Vincent Goellner ◽  
Vanessa Armel ◽  
Andrea Zitolo ◽  
Emiliano Fonda ◽  
Frédéric Jaouen
Keyword(s):  
Hydrogen Peroxide ◽  
Oxygen Reduction ◽  
Carbon Catalysts

A review of advanced metal-free carbon catalysts for oxygen reduction reactions towards the selective generation of hydrogen peroxide

2020 ◽  
Vol 8 (40) ◽  
pp. 20849-20869 ◽  
Author(s):  
Yue Zhou ◽  
Ge Chen ◽  
Jiujun Zhang
Keyword(s):  
Hydrogen Peroxide ◽  
Oxygen Reduction ◽  
Recent Progress ◽  
Free Carbon ◽  
Reduction Reactions ◽  
Oxygen Reduction Reactions ◽  
Metal Free ◽  
Selective Generation ◽  
Carbon Catalysts

Recent progress in the development of metal-free carbon catalysts for ORR to H2O2.

Active site engineering of atomically dispersed transition metal-heteroatom-carbon catalysts for oxygen reduction

2021 ◽  
Author(s):  
Jiawei Zhu ◽  
Shichun Mu
Keyword(s):  
Transition Metal ◽  
Oxygen Reduction ◽  
Active Site ◽  
Catalytic Reactions ◽  
Single Atom ◽  
Carbon Catalysts

Owing to the advantage of atomic utilization, the single-atom catalyst has attracted much attention and been employed in multifarious catalytic reactions. Their definite site configuration is favorable for exploring the...

scholarly journals Identification of active sites for acidic oxygen reduction on carbon catalysts with and without nitrogen doping

2019 ◽  
Vol 2 (8) ◽  
pp. 688-695 ◽  
Author(s):  
Yi Jia ◽  
Longzhou Zhang ◽  
Linzhou Zhuang ◽  
Hongli Liu ◽  
Xuecheng Yan ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Active Sites ◽  
Nitrogen Doping ◽  
Carbon Catalysts

Hydrogen Peroxide Synthesis via Enhanced Two-Electron Oxygen Reduction Pathway on Carbon-Coated Pt Surface

2014 ◽  
Vol 118 (51) ◽  
pp. 30063-30070 ◽  
Author(s):  
Chang Hyuck Choi ◽  
Han Chang Kwon ◽  
Sunwoo Yook ◽  
Hyeyoung Shin ◽  
Hyungjun Kim ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Oxygen Reduction ◽  
Carbon Coated ◽  
Hydrogen Peroxide Synthesis

Advanced Atomically Dispersed Metal–Nitrogen–Carbon Catalysts Toward Cathodic Oxygen Reduction in PEM Fuel Cells

2021 ◽  
Vol 11 (37) ◽  
pp. 2101222 ◽  
Author(s):  
Yijie Deng ◽  
Junming Luo ◽  
Bin Chi ◽  
Haibo Tang ◽  
Jing Li ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction ◽  
Pem Fuel Cells ◽  
Carbon Catalysts

scholarly journals Effect of Pyrolysis Conditions on the Performance of Co–Doped MOF–Derived Carbon Catalysts for Oxygen Reduction Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1163
Author(s):  
Ning Cui ◽  
Kexiao Bi ◽  
Wei Sun ◽  
Qianqian Wu ◽  
Yinan Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Heating Rate ◽  
Reduction Reaction ◽  
Half Wave ◽  
Step Heating ◽  
The Stability ◽  
Carbon Catalysts ◽  
Co Doped

MOF–derived porous carbon is a type of promising catalyst to replace expensive Pt–based catalysts for oxygen reduction reaction (ORR). The catalytic activity for ORR depends closely on pyrolysis conditions. In this work, a Co–doped ZIF–8 material was chosen as a research object. The effect of pyrolysis conditions (temperature, heating rate, two–step heating) on the ORR performance of ZIF–derived carbon catalysts was systematically studied. The Co–ZIF–8 catalyst carbonized at 900 °C exhibits better ORR catalytic activity than that carbonized at 800 °C and 1000 °C. Moreover, a low heating rate can enhance catalytic activity. Two–step pyrolysis is proven to be an effective way to improve the performance of catalysts. Reducing the heating rate in the low–temperature stage is more beneficial to the ORR performance, compared to the heating rate in the high–temperature stage. The results show that the Co–ZIF–8 catalyst exhibits the best performance when the precursor was heated to 350 °C at 2 °C/min, and then heated to 900 °C at 5 °C/min. The optimum Co–ZIF–8 catalyst shows a half–wave potential of 0.82 V and a current density of 5.2 mA·cm−2 in 0.1 M KOH solution. It also exhibits high content of defects and good graphitization. TEM mapping shows that Co and N atoms are highly dispersed in the polyhedral carbon skeleton. However, two–step pyrolysis has no significant effect on the stability of the catalyst.

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.

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