电催化剂
酒精氧化
扫描电子显微镜
催化作用
析氧
纳米结构
透射电子显微镜
高分辨率透射电子显微镜
化学
材料科学
化学工程
纳米技术
核化学
有机化学
电化学
复合材料
电极
物理化学
工程类
作者
T.V.M. Sreekanth,G.R. Dillip,P.C. Nagajyothi,Kisoo Yoo,J. Kim
标识
DOI:10.1016/j.apcatb.2020.119793
摘要
Fabrication of metal-organic frameworks (MOFs) on carbon nanostructure arrays is extremely challenging. Here, we successfully fabricated three-dimensional (3D) flower-like Ni-MOFs on multiwalled carbon nanotubes (MWCNTs) through a highly efficient and rapid microwave synthetic protocol and studied their applicability in electrocatalytic alcohol oxidation reaction (AOR) and oxygen evolution reaction (OER). Morphological studies using scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM) images suggested the formation of marigold-like Ni-MOF decorated on the MWCNTs. Surface coverage of [email protected] (1.11 × 10−7 mol g-1) was higher than that of the pristine Ni-MOF (9.35 × 10-8 mol g-1) electrocatalyst. The higher electrochemical active surface area (ECSA) of [email protected] (494.3 cm2) compared to the pristine Ni-MOF (203.5 cm2) electrocatalyst resulted in the availability of large active sites in the [email protected] to catalyze AOR and OER. [email protected] exhibited a higher electrooxidation performance in AOR than the pristine Ni-MOF and its OER activity was far superior.
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