ZIF-8@ZIF-67-Derived Co Embedded into Nitrogen-Doped Carbon Nanotube Hollow Porous Carbon Supported Pt as an Efficient Electrocatalyst for Methanol Oxidation

Nanomaterials

Zhipeng Sun¹  Mengran Lou²  Pengtao Wen²  Jie Zhang²  Zhiqian Li²  Ruiying Wang² 

[1] Materials and Energy School, Guangdong University of Technology, Guangzhou 510006, China;State Key Laboratory of Chemistry and Utilization of Carbon-based Energy Resource, Key Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, China;

关键词: metal-organic frameworks;    N-doped carbon nanotube;    hollow porous carbon;    Pt-based catalysts;    direct methanol fuel cells;   

DOI  :  10.3390/nano11102491

来源: DOAJ

【 摘 要 】

It is of prime importance to develop anode electrocatalysts for direct methanol fuel cells (DMFCs) with good performance, which is critical for their commercial applications. Metal-organic framework (MOF)-derived carbon materials are extensively developed as supports of catalysts. Herein, Co embedded nitrogen-doped carbon nanotube hollow porous carbon (Co-NCNT-HPC) derived from MOFs have been fabricated, which were synthesized by pyrolyzing at an optimized temperature of 800 °C using ZIF-8@ZIF-67 as a precursor. The presence of ZIF-8@ZIF-67 ensures the doping of nitrogen and the large specific surface area of the support materials at high temperatures. A Pt/Co-NCNT-HPC800 sample, which was synthesized using Co-NCNT-HPC800 as a support, showed an enhanced mass activity of 416.2 mA mg⁻¹_Pt for methanol oxidation reaction (MOR), and the onset potential of CO_ad oxidation of 0.51 V, which shifted negatively about 0.13 V compared with Pt/C (20%). Moreover, the Pt/Co-NCNT-HPC800 sample exhibits high stability. This work provides a facile strategy for MOF-derived carbon materials to construct advanced electrocatalysts for MOR.

【 授权许可】

Unknown