Issue 16, 2020

“Nano-garden cultivation” for electrocatalysis: controlled synthesis of Nature-inspired hierarchical nanostructures

Abstract

Three-dimensional intricate nanostructures hold great promise for real-life applications. Many of these hierarchical structures resemble shapes from Nature, demonstrating much improved physico-chemical properties. Yet, their rational design and controlled synthesis remain challenging. By simply manipulating (electro)chemical gradients using a combined hydrothermal and electrodeposition strategy, we herein show the controlled growth of Co(OH)2 nanostructures, mimicking the process of garden cultivation. The resulting “nano-garden” can selectively contain different patterns, all of which can be fully phosphidated into CoP without losing the structural integrity. Remarkably, these CoP nanostructures show distinct catalytic performance in oxygen evolution and hydrogen evolution reactions. Under pH-universal conditions, the CoP “soil + flower-with-stem” structure shows a much more “effective” surface area for gas-evolving reactions with lower activation and concentration overpotentials. This provides superior bifunctional catalytic activity for both reactions, outperforming noble metal counterparts.

Graphical abstract: “Nano-garden cultivation” for electrocatalysis: controlled synthesis of Nature-inspired hierarchical nanostructures

Supplementary files

Article information

Article type
Communication
Submitted
21 Janv. 2020
Accepted
09 Marts 2020
First published
10 Marts 2020
This article is Open Access
Creative Commons BY license

J. Mater. Chem. A, 2020,8, 7626-7632

“Nano-garden cultivation” for electrocatalysis: controlled synthesis of Nature-inspired hierarchical nanostructures

X. Yan, Y. Zhao, J. Biemolt, K. Zhao, P. C. M. Laan, X. Cao and N. Yan, J. Mater. Chem. A, 2020, 8, 7626 DOI: 10.1039/D0TA00870B

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