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Issue 24, 2019
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Rapid synthesis of size-tunable transition metal carbide nanodots under ambient conditions

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Abstract

Transition metal carbides (TMCs) have attracted great interest due to their potential for application in energy conversion and electrocatalysis. However, their nanostructures are difficult to control, especially in the case of TMC nanodots since their growth process usually requires high carburization temperature which could cause easy agglomeration of small size nanoparticles. Here, we develop a microwave combustion method for rapid (∼2 min) synthesis of TMC nanodots with tunable size from ∼3 to ∼40 nm under ambient conditions. These TMC nanodots exhibit outstanding catalytic performance for the hydrogen evolution reaction (HER) with low onset overpotentials of 19 and 27 mV vs. RHE as well as small Tafel slopes of 39 and 45 mV dec−1 in H2SO4 and KOH, respectively. This work highlights a novel strategy for the design and synthesis of transition metal carbides.

Graphical abstract: Rapid synthesis of size-tunable transition metal carbide nanodots under ambient conditions

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Publication details

The article was received on 12 Apr 2019, accepted on 30 May 2019 and first published on 31 May 2019


Article type: Communication
DOI: 10.1039/C9TA03895G
J. Mater. Chem. A, 2019,7, 14489-14495

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    Rapid synthesis of size-tunable transition metal carbide nanodots under ambient conditions

    J. Wan, L. Huang, J. Wu, L. Xiong, X. Gao, Z. Hu, H. Jin, G. Zhang and J. Zhou, J. Mater. Chem. A, 2019, 7, 14489
    DOI: 10.1039/C9TA03895G

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