scholarly journals Synergistically Enhanced Electrocatalytic Performance of an N-Doped Graphene Quantum Dot-Decorated 3D MoS2–Graphene Nanohybrid for Oxygen Reduction Reaction

ACS Omega ◽  
2016 ◽  
Vol 1 (5) ◽  
pp. 971-980 ◽  
Author(s):  
Ramalingam Vinoth ◽  
Indrajit M. Patil ◽  
Alagarsamy Pandikumar ◽  
Bhalchandra A. Kakade ◽  
Nay Ming Huang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Graphene Quantum Dot ◽  
Electrocatalytic Performance ◽  
Doped Graphene

Engineering self-assembled N-doped graphene–carbon nanotube composites towards efficient oxygen reduction electrocatalysts

2014 ◽  
Vol 16 (27) ◽  
pp. 13605-13609 ◽  
Author(s):  
Yun Zhang ◽  
Wen-Jie Jiang ◽  
Xing Zhang ◽  
Lin Guo ◽  
Jin-Song Hu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Electrocatalytic Performance ◽  
Nanotube Composites ◽  
Doped Graphene ◽  
Carbon Nanotube Composites ◽  
Self Assembled

Tuning the composition of N-doped graphene–carbon nanotube composites can boost their electrocatalytic performance for the oxygen reduction reaction.

scholarly journals A graphene quantum dot/phthalocyanine conjugate: a synergistic catalyst for the oxygen reduction reaction

RSC Advances ◽  
2017 ◽  
Vol 7 (42) ◽  
pp. 26113-26119 ◽  
Author(s):  
Ki Hwan Koh ◽  
Sung Hyun Noh ◽  
Tae-Hyun Kim ◽  
Won Jun Lee ◽  
Sung-Chul Yi ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Hybrid Material ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Iron Phthalocyanine ◽  
Graphene Quantum Dot

In this work, a novel graphene quantum dot/iron phthalocyanine conjugate is synthesized. This hybrid material show efficient electrocatalytic activityviafour electron reaction and distinguished tolerance toward methanol and CO.

scholarly journals Importance of Doping Sequence in Multiple Heteroatom-Doped Reduced Graphene Oxide as Efficient Oxygen Reduction Reaction Electrocatalysts

Applied Nano ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 267-277
Author(s):  
Jin Hee Kim ◽  
Jong Hun Han ◽  
Jae-Hyung Wee ◽  
Go Bong Choi ◽  
Seungki Hong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Single Step ◽  
Step Process ◽  
Electrocatalytic Performance ◽  
Reduced Graphene ◽  
Doped Graphene

Multiple heteroatom-doped graphene is of great interest for developing an efficient electrocatalyst for oxygen reduction reaction (ORR). To maximize the electrocatalytic performance of doped graphene, the competitive doping mechanism caused by the different atomic sizes of dopants should be developed. Herein, three different heteroatoms (e.g., N, P and B) are competitively introduced into reduced graphene oxide (RGO) using both single- and two-step processes. The total quantity of heteroatoms for ternary RGO synthesized using the two-step process is lower than that when using the single-step process. Higher ORR electrocatalytic activity for the two-step-synthesized RGO compared to the single-step-synthesized RGO can be explained by: (a) a high amount of P atoms; (b) the fact that B doping itself decreases the less electrocatalytic N moieties such as pyrrole and pyridine and increases the high electrocatalytic moieties such as quaternary N; (c) a high amount of B atoms itself within the RGO act as an electrocatalytic active center for O2 adsorption; and (d) a small amount of substitutional B might increase the electrical conductivity of RGO. Our findings provide new insights into the design of heteroatom-doped carbon materials with excellent electrocatalytic performance.

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