Metal-Based Nanocatalysts via a Universal Design on Cellular Structure.

Yajing Zhao,Zhaohui Huang,Shiwei Lin,Tianzi Yang,Peng Gao,Xiaowen Wu,Xin Min,Zhengping Ding,Zhenglian Liu,Yan'Gai Liu,Shuang Chen,Hui Wu,Changzhi Ai,Minghao Fang

doi:10.1002/advs.201902051

Abstract

Metal‐based nanocatalysts supported on carbon have significant prospect for industry. However, a straightforward method for efficient and stable nanocatalysts still remains extremely challenging. Inspired by the structure and comptosition of cell walls and membranes, an ion chemical bond anchoring, an in situ carbonization coreduction process, is designed to obtain composite catalysts on N‐doped 2D carbon (C‐N) loaded with various noble and non‐noble metals (for example, Pt, Ru, Rh, Pd, Ag, Ir, Au, Co, and Ni) nanocatalysts. These 2 nm particles uniformly and stably bond with the C‐N support since the agglomeration and growth are suppressed by anchoring the metal ions on the cell wall and membrane during the carbonization and reduction reactions. The Pt@C‐N exhibits excellent catalytic activity and long‐term stability for the hydrogen evolution reaction, and the relative overpotential at 100 mA cm−2 is only 77 mV, which is much lower than that of commercial Pt/C and Pt single‐atom catalysts reported recently.

Highlights

There are many methods for directly nanocatalysts still remains extremely challenging
When the cell wall and membrane are in situ carbonized to form a 2D carbon material, the metal ions may be simultaneously reduced to metal atoms to produce metal nanoparticles stably anchored on the surface of carbon
In the above experimental design, since the proteins embedded in the cell membrane contain a large amount of N atoms, N may directly doped into the carbon during the carbonization process to improve the electronic state of the carbon support, resulting in excellent catalytic activity and stability superior to those of commercial Pt/C and other reported Pt single-atom catalysts for the hydrogen evolution reaction (HER)

Summary

Introduction

There are many methods for directly nanocatalysts still remains extremely challenging. In the above experimental design, since the proteins embedded in the cell membrane contain a large amount of N atoms, N may directly doped into the carbon during the carbonization process to improve the electronic state of the carbon support, resulting in excellent catalytic activity and stability superior to those of commercial Pt/C and other reported Pt single-atom catalysts for the hydrogen evolution reaction (HER).

Results

Conclusion