Size effect of oxygen reduction reaction on nitrogen-doped graphene quantum dots

Zhang Peng; Hu Qiang; Yang Xuejing; Hou Xiuli; Mi Jianli; Liu Lei; Dong Mingdong

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Size effect of oxygen reduction reaction on nitrogen-doped graphene quantum dots

机译：氧还原反应对氮掺杂石墨烯量子点的尺寸效应

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N-doped graphene quantum dots (GQDs) are attracting great interest as promising Pt-free oxygen reduction reaction (ORR) catalysts. In this work, the mechanism of ORR on N-doped GQDs with three different sizes has been investigated based on density functional theory. Our results show that the size of the N-doped GQDs affects the ORR. The adsorption strength of ORR intermediates, the reaction free energy of the ratedetermining step, and the overpotential increase with the increase of the size of N-doped GQDs. The N-doped GQDs with the smallest size possess the smallest overpotential, indicating the highest ORR catalytic activity. Our results will help to understand the size effect of N-doped GQDs on the catalytic activity of ORR.

机译：N掺杂的石墨烯量子点（GQDS）吸引了较大的兴趣，作为有前途的不含PT氧还原反应（ORR）催化剂。在这项工作中，基于密度泛函理论研究了具有三种不同尺寸的N掺杂GQDS的ORR机制。我们的结果表明，N掺杂GQD的大小会影响ORR。 rateTemining步骤的orr中间体的吸附强度，反应自由能量，随着N掺杂GQD的尺寸的增加而增加。具有最小尺寸的n掺杂的GQD具有最小的过电位，表明最高的ORR催化活性。我们的结果将有助于了解N掺杂GQDS对ORR催化活性的尺寸效应。

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来源
《RSC Advances》 |2018年第1期|共6页
作者
Zhang Peng; Hu Qiang; Yang Xuejing; Hou Xiuli; Mi Jianli; Liu Lei; Dong Mingdong;
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作者单位

Jiangsu Univ Sch Mat Sci &

Engn Inst Adv Mat Zhenjiang 212013 Peoples R China;

Jiangsu Univ Sch Mat Sci &

Engn Inst Adv Mat Zhenjiang 212013 Peoples R China;

Jiangsu Univ Sch Mat Sci &

Engn Inst Adv Mat Zhenjiang 212013 Peoples R China;

Jiangsu Univ Sch Mat Sci &

Engn Inst Adv Mat Zhenjiang 212013 Peoples R China;

Jiangsu Univ Sch Mat Sci &

Engn Inst Adv Mat Zhenjiang 212013 Peoples R China;

Jiangsu Univ Sch Mat Sci &

Engn Inst Adv Mat Zhenjiang 212013 Peoples R China;

Aarhus Univ Interdisciplinary Nanosci Ctr iNANO Ctr DNA Nanotechnol CDNA DK-8000 Aarhus Denmark;

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正文语种 eng
中图分类化学;
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1. Size effect of oxygen reduction reaction on nitrogen-doped graphene quantum dots [J] . Zhang Peng, Hu Qiang, Yang Xuejing, RSC Advances . 2018,第1期

机译：氧还原反应对氮掺杂石墨烯量子点的尺寸效应
2. Nitrogen-Doped Colloidal Graphene Quantum Dots and Their Size- Dependent Electrocatalytic Activity for the Oxygen Reduction Reaction [J] . Qiqi Li, Sheng Zhang, Liming Dai, Journal of the American Chemical Society . 2012,第46期

机译：氮掺杂胶体石墨烯量子点及其对氧还原反应的尺寸依赖性电催化活性
3. Nitrogen-Doped Graphene Quantum Dots Anchored on Thermally Reduced Graphene Oxide as an Electrocatalyst for the Oxygen Reduction Reaction [J] . Zhang Bo, Xiao Chunhui, Xiang Yang, ChemElectroChem . 2016,第6期

机译：氮掺杂石墨烯量子点固定在热还原氧化石墨烯上作为氧还原反应的电催化剂
4. Oxygen Reduction Reaction Mechanism of Nitrogen-Doped Graphene Derived from Ionic Liquid [C] . Yiyi She, Jinfan Chen, Chengxu Zhang International Conference on Applied Energy . 2018

机译：离子液体衍生氮掺杂石墨烯的氧还原反应机理
5. Nitrogen-doped graphene quantum dots and their electrocatalytic and photocatalytic activity. [D] . Li, Qiqi. 2015

机译：氮掺杂石墨烯量子点及其电催化和光催化活性。
6. Synergistically Enhanced Electrocatalytic Performanceof an N-Doped Graphene Quantum Dot-Decorated 3D MoS2–Graphene Nanohybrid for Oxygen Reduction Reaction [O] . Ramalingam Vinoth, IndrajitM. Patil, Alagarsamy Pandikumar, 2016

机译：协同增强的电催化性能掺杂石墨烯量子点修饰的3D MoS2-石墨烯纳米杂化材料的氧还原反应
7. VN Quantum Dots Anchored Uniformly onto Nitrogen-Doped Graphene as Efficient Electrocatalysts for Oxygen Reduction Reaction [O] . Jing Wang, Lan Wang, Shubin Yang 2018

机译：VN量子点均匀锚固到氮气掺杂石墨烯上，作为氧还原反应的有效电催化剂
8. Oxygen Reduction Reaction on Nitrogen-doped Graphene. [R] . Studt, F. 2012

机译：氮掺杂石墨烯的氧还原反应。

Size effect of oxygen reduction reaction on nitrogen-doped graphene quantum dots

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