Nanoengineering of Porous 2D Structures with Tunable Fluid Transport Behavior for Exceptional H2O2 Electrosynthesis

Tian，Qiang1,2; Jing，Lingyan2,3; Yin，Yunchao1,2; Liang，Zhenye4; Du，Hongnan5; Yang，Lin4; Cheng，Xiaolei1; Zuo，Daxian4; Tang，Cheng6; Liu，Zhuoxin1; Liu，Jian5; Wan，Jiayu7; Yang，Jinlong1

2023

10.1021/acs.nanolett.3c04396

Nano Letters   影响因子和分区

1530-6984

1530-6992

Precision nanoengineering of porous two-dimensional structures has emerged as a promising avenue for finely tuning catalytic reactions. However, understanding the pore-structure-dependent catalytic performance remains challenging, given the lack of comprehensive guidelines, appropriate material models, and precise synthesis strategies. Here, we propose the optimization of two-dimensional carbon materials through the utilization of mesopores with 5-10 nm diameter to facilitate fluid acceleration, guided by finite element simulations. As proof of concept, the optimized mesoporous carbon nanosheet sample exhibited exceptional electrocatalytic performance, demonstrating high selectivity (>95%) and a notable diffusion-limiting disk current density of −3.1 mA cm for HO production. Impressively, the electrolysis process in the flow cell achieved a production rate of 14.39 mol g h to yield a medical-grade disinfectant-worthy HO solution. Our pore engineering research focuses on modulating oxygen reduction reaction activity and selectivity by affecting local fluid transport behavior, providing insights into the mesoscale catalytic mechanism.

carbon materials diffusion reinforcement electrocatalysis hydrogen peroxide pore engineering

EI ; SCI

英语

其他

20240715556781

Carbon ; Diffusion in gases ; Diffusion in liquids ; Electrolytic reduction ; Pore structure ; Transport properties

Ore Treatment:533.1 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Physical Properties of Gases, Liquids and Solids:931.2

MATERIALS SCIENCE

2-s2.0-85184520980

Scopus

1.Shenzhen Key Laboratory of Energy Electrocatalytic Materials,Guangdong Research Center for Interfacial Engineering of Functional Materials,College of Materials Science and Engineering,Shenzhen University,Shenzhen,518060,China
2.College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen,518060,China
3.College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen,518060,China
4.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,457 Zhongshan Road,116023,China
6.Beijing Key Laboratory of Green Chemical,Reaction Engineering and Technology,Department of Chemical Engineering,Tsinghua University,Beijing,100084,China
7.Global Institute of Future Technology,Shanghai Jiaotong University,Shanghai,200240,China

Tian，Qiang,Jing，Lingyan,Yin，Yunchao,et al. Nanoengineering of Porous 2D Structures with Tunable Fluid Transport Behavior for Exceptional H2O2 Electrosynthesis[J]. Nano Letters,2023.

Tian，Qiang.,Jing，Lingyan.,Yin，Yunchao.,Liang，Zhenye.,Du，Hongnan.,...&Yang，Jinlong.(2023).Nanoengineering of Porous 2D Structures with Tunable Fluid Transport Behavior for Exceptional H2O2 Electrosynthesis.Nano Letters.

Tian，Qiang,et al."Nanoengineering of Porous 2D Structures with Tunable Fluid Transport Behavior for Exceptional H2O2 Electrosynthesis".Nano Letters (2023).