Phosphorus-Doped directly interconnected networks of amorphous Metal-Organic framework nanowires for efficient methanol oxidation

Mengyi Han; Zhiyong Zhao; Xiaowei Zhang; Peng Wang; Liwen Xing; Dandan Jia; Linmeng Wang; Xiao Chen; Hongyi Gao; Ge Wang

doi:10.1016/j.jcis.2023.03.098

Phosphorus-Doped directly interconnected networks of amorphous Metal-Organic framework nanowires for efficient methanol oxidation

J Colloid Interface Sci. 2023 Jul:641:675-684. doi: 10.1016/j.jcis.2023.03.098. Epub 2023 Mar 21.

Authors

Mengyi Han¹, Zhiyong Zhao¹, Xiaowei Zhang², Peng Wang¹, Liwen Xing³, Dandan Jia⁴, Linmeng Wang⁵, Xiao Chen¹, Hongyi Gao⁶, Ge Wang⁷

Affiliations

¹ Institute of Advanced Materials, Beijing Normal University, Beijing 100875, China.
² Institute of Advanced Materials, Beijing Normal University, Beijing 100875, China. Electronic address: xiaoweizhang@bnu.edu.cn.
³ College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China.
⁴ Research Institute of Petroleum Processing, Sinopec, 18 Xueyuan Road, Haidian District, Beijing 100083, China.
⁵ Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
⁶ Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Shunde Graduate School, University of Science and Technology Beijing, Shunde 528399, China.
⁷ Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory of Function Materials for Molecule & Structure Construction, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. Electronic address: gewang@ustb.edu.cn.

PMID: 36965339
DOI: 10.1016/j.jcis.2023.03.098

Abstract

Developing high-performance and low-cost electrocatalysts toward methanol oxidation reaction (MOR) is essential for fuel cell applications. Herein, we report a defect engineering strategy integrating amorphization and phosphorization to construct directly interconnected networks of amorphous NiCo-based metal-organic framework nanowires (a-NiCo-MOFNWs) with phosphorus (P) doping. The resulting P-doped a-NiCo-MOFNWs (a-NiCo-MOFNWs-P) network displays superior MOR efficiency and long-term durability over 1000 cyclic voltammetry (CV) measurements. The special structure of directly interconnected networks and the synergistic effect between the amorphous MOFs and dispersed phosphorus species give rise to abundant exposed active sites, accelerated electron transport, and increased porosity for mass transfer, thus boosting the reaction kinetics of MOR. This work provides additional insights into the network assembly and structural evolution of one-dimensional (1D) MOFs, and also opens up new avenues for the design of highly reactive and robust non-precious metal-based electrocatalysts.

Keywords: Amorphous MOFs; Defect engineering; Directly interconnected nanowire networks; Methanol oxidation reaction; P doping.