Premium
Rapid, High‐Temperature, In Situ Microwave Synthesis of Bulk Nanocatalysts
Author(s) -
Zhong Geng,
Xu Shaomao,
Cui Mingjin,
Dong Qi,
Wang Xizheng,
Xia Qinqin,
Gao Jinlong,
Pei Yong,
Qiao Yun,
Pastel Glenn,
Sunaoshi Takeshi,
Yang Bao,
Hu Liangbing
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201904881
Subject(s) - materials science , carbon black , nanoparticle , carbon fibers , nanomaterial based catalyst , microwave , catalysis , nanotechnology , chemical engineering , absorption (acoustics) , chemistry , organic chemistry , composite material , computer science , telecommunications , natural rubber , composite number , engineering
Carbon‐black‐supported nanoparticles (CNPs) have attracted considerable attention for their intriguing catalytic properties and promising applications. The traditional liquid synthesis of CNPs commonly involves demanding operation conditions and complex pre‐ or post‐treatments, which are time consuming and energy inefficient. Herein, a rapid, scalable, and universal strategy is reported to synthesize highly dispersed metal nanoparticles embedded in a carbon matrix via microwave irradiation of carbon black with preloaded precursors. By optimizing the amount of carbon black, the microwave absorption is dramatically improved while the thermal dissipation is effectively controlled, leading to a rapid temperature increase in carbon black, ramping to 1270 K in just 6 s. The whole synthesis process requires no capping agents or surfactants, nor tedious pre‐ or post‐treatments of carbon black, showing tremendous potential for mass production. As a proof of concept, the synthesis of ultrafine Ru nanoparticles (≈2.57 nm) uniformly embedded in carbon black using this microwave heating technique is demonstrated, which displays remarkable electrocatalytic performance when used as the cathode in a Li–O 2 battery. This microwave heating method can be extended to the synthesis of other nanoparticles, thereby providing a general methodology for the mass production of carbon‐supported catalytic nanoparticles.