Preparation of Hollow CeO2 /CePO4 with Nitrogen and Phosphorus Co-Doped Carbon Shells for Enhanced Oxygen Reduction Reaction Catalytic Activity

2018 ◽  
Vol 5 (5) ◽  
pp. 793-798 ◽  
Author(s):  
Yue Yu ◽  
Bowen He ◽  
Yujia Liao ◽  
Xiaodan Yu ◽  
Zhongcheng Mu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Nitrogen And Phosphorus ◽  
Co Doped

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.

A nitrogen and boron co-doped metal-free carbon electrocatalyst for an efficient oxygen reduction reaction

2018 ◽  
Vol 5 (11) ◽  
pp. 2985-2991 ◽  
Author(s):  
Yunjie Zhou ◽  
Yue Sun ◽  
Huibo Wang ◽  
Cheng Zhu ◽  
Jin Gao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Material ◽  
Reduction Reaction ◽  
Free Carbon ◽  
Metal Free ◽  
Co Doped

A N, B co-doped carbon material exhibits excellent catalytic activity for an oxygen reduction reaction.

Nitrogen and phosphorus modification to enhance the catalytic activity of biomass-derived carbon toward the oxygen reduction reaction

2020 ◽  
Vol 4 (6) ◽  
pp. 2707-2717 ◽  
Author(s):  
Lei Han ◽  
Xingyu Cui ◽  
Yanyan Liu ◽  
Guosheng Han ◽  
Xianli Wu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Synergistic Effect ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Carbon ◽  
Reduction Reaction ◽  
Nitrogen And Phosphorus ◽  
Catalytically Active ◽  
Air Battery ◽  
Phosphorus Modification

N, P heteroatoms are doped into the carbon derived from Fructus azedarach precursor. The successful application in zinc–air battery illustrates that the N, P synergistic effect makes a bright future for the development of catalytically active carbon.

One-step synthesis of cobalt and nitrogen co-doped carbon nanotubes and their catalytic activity for the oxygen reduction reaction

2015 ◽  
Vol 3 (24) ◽  
pp. 12718-12722 ◽  
Author(s):  
Shaofang Fu ◽  
Chengzhou Zhu ◽  
He Li ◽  
Dan Du ◽  
Yuehe Lin
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
One Step ◽  
Co Doped

One-step synthesis of cobalt and nitrogen co-doped carbon nanotubes and their catalytic activity for the oxygen reduction reaction.

Nitrogen and Phosphorus Co-doped Hollow Carbon Spheres as Efficient Metal-Free Electrocatalysts for the Oxygen Reduction Reaction

2018 ◽  
Vol 5 (14) ◽  
pp. 1891-1898 ◽  
Author(s):  
Chunmei Zhang ◽  
Lin Hou ◽  
Chunfeng Cheng ◽  
Zhihua Zhuang ◽  
Fuqin Zheng ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Carbon Spheres ◽  
Nitrogen And Phosphorus ◽  
Metal Free ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres ◽  
Co Doped

Atomically dispersed Mn-N4 electrocatalyst with high oxygen reduction reaction catalytic activity from metal organic framework ZIF-8 by minimal water assisted mechanochemical synthesis

2022 ◽  
Author(s):  
Ziyan Kong ◽  
Tao Liu ◽  
Kun Hou ◽  
Lunhui Guan
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Mechanochemical Synthesis ◽  
Precious Metal ◽  
Metal Organic Framework ◽  
Reduction Reaction ◽  
Environmentally Benign ◽  
Metal Organic ◽  
Co Doped

Developing efficient and stable non-precious metal (NPM) oxygen reduction reaction (ORR) catalyst in an environmentally benign and economically affordable way is highly desired but remains challenging. Manganese and nitrogen co-doped...

Enhanced catalytic activity of nanoshell carbon co-doped with boron and nitrogen in the oxygen reduction reaction

2017 ◽  
Vol 42 (23) ◽  
pp. 15489-15496 ◽  
Author(s):  
Takafumi Ishii ◽  
Takuya Maie ◽  
Naofumi Kimura ◽  
Yuki Kobori ◽  
Yasuo Imashiro ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Co Doped
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