Laser-scribed ultrasmall nanoparticles with unary and binary phases

被引：12

作者：

Van Lam, Do ^{[1
]}

Sohail, Muhammad ^{[2
,3
]}

Nguyen, Van-Toan ^{[4
]}

Ngo, Quang-Tung ^{[4
]}

Jeffery, A. Anto ^{[5
]}

Choi, Ho-Suk ^{[4
]}

Jung, Namgee ^{[5
]}

Kim, Jae-Hyun ^{[1
,3
]}

Kim, Hyunuk ^{[2
,3
]}

Lee, Seung-Mo ^{[1
,3
]}

机构：

[1] Korea Inst Machinery & Mat KIMM, 156 Gajeongbuk Ro, Daejeon 34103, South Korea

[2] Korea Inst Energy Res KIER, 152 Gajeong Ro, Daejeon 34129, South Korea

[3] Univ Sci & Technol UST, 217 Gajeong Ro, Daejeon 34113, South Korea

[4] Chungnam Natl Univ, Dept Chem Engn & Appl Chem, 99 Daehak Ro, Daejeon 34134, South Korea

[5] Chungnam Natl Univ, Grad Sch Energy Sci & Technol GEST, 99 Daehak Ro, Daejeon 34134, South Korea

来源：

CHEMICAL ENGINEERING JOURNAL | 2021年 / 421卷

关键词：

Metal-organic framework; Laser-scribing; Nanoparticles@carbon; Electrocatalyst; Ultrasmall nanoparticles; METAL-ORGANIC FRAMEWORKS; OXYGEN REDUCTION; CARBOTHERMIC REDUCTION; HIGHLY EFFICIENT; GRAPHENE LAYER; POROUS CARBON; EVOLUTION; OXIDE; ELECTROCATALYSTS; NANOMATERIALS;

D O I：

10.1016/j.cej.2020.127731

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ultrasmall nanoparticles embedded in conductive support have immense potential in catalytic and energyrelated applications, yet developing a fast and proper synthesis method remains a challenge. Herein, we demonstrate that, via simple laser scribing, isostructural metal-organic frameworks can be readily transformed into ultrasmall nanoparticles (5-14 nm) with different elemental compositions embedded in conductive carbon support. We found that the formation kinetics of nanoparticles is controlled by the thermodynamic reducibility of metal ions in the metal-organic framework as well as the cooling rate. This method allowed us to precisely tune the particle size and uniformity as well as the composition. As a potential application of the produced nanoparticles, we evaluated the electrocatalytic behavior of the Ni nanoparticles embedded in carbon support. It exhibited excellent performance and stability for the hydrogen evolution reaction in both acid and alkaline electrolytes.

引用

页数：10