Premium
3D PtFe Clusters with Cube‐in‐Cube Structure Enhance Oxygen Reduction Catalysis and Electrochemical Sensing
Author(s) -
Lin Fei,
Sun Yingjun,
Lai Jianping,
Wang Kai,
Tang Yonghua,
Chao Yuguang,
Yang Yong,
Feng Jianrui,
Lv Fan,
Zhou Peng,
Huang Minghua,
Guo Shaojun
Publication year - 2018
Publication title -
small methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.66
H-Index - 46
ISSN - 2366-9608
DOI - 10.1002/smtd.201800073
Subject(s) - electrocatalyst , electrochemistry , materials science , nanomaterials , selectivity , hydrazine (antidepressant) , catalysis , detection limit , nanotechnology , chemical engineering , chemistry , electrode , organic chemistry , chromatography , engineering
Rational design and construction of high‐performance electrocatalytic nanomaterials is significant for improving activity and stability of oxygen reduction reaction (ORR), and the sensitivity and selectivity of electrochemical sensors. Herein, the synthesis of a class of PtFe clusters with a cube‐in‐cube structure (PtFe‐CIC) is reported. The nanoscale PtFe clusters are constructed by primary subunits of the nanocube and have porous structure and high surface area. The PtFe‐CIC exhibits much enhanced electrocatalytic activity for ORR by showing high specific activity and mass activity. The PtFe‐CIC is a highly universal and efficient electrocatalyst for boosting the electrocatalysis of H 2 O 2 and hydrazine to construct high‐sensitivity sensors in 0.1 m phosphate‐buffered saline solution. The as‐prepared PtFe‐CIC shows a wide detection range of 2 × 10 −9 to 1.5 × 10 −3 m for H 2 O 2 with a very low detection limit of 0.7 × 10 −9 m , and a wide linear range of 0.1–357.9 × 10 −6 m for hydrazine with a very low detection limit of 33 × 10 −9 m . This work opens a new way to design 3D superarchitectures with porous structure for boosting electrocatalysis of small molecules.