Monolayer-precision synthesis of molybdenum sulfide nanoparticles and their nanoscale size effects in the hydrogen evolution reaction

ACS Nano
Bora SeoSang Hoon Joo

Abstract

Metal sulfide-based nanostructured materials have emerged as promising catalysts for hydrogen evolution reaction (HER), and significant progress has been achieved in enhancing their activity and durability for the HER. The understanding of nanoscale size-dependent catalytic activities can suggest critical information regarding catalytic reactivity, providing the scientific basis for the design of advanced catalysts. However, nanoscale size effects in metal sulfide-based HER catalysts have not yet been established fully, due to the synthetic difficulty in precisely size-controlled metal sulfide nanoparticles. Here we report the preparation of molybdenum sulfide (MoS2) nanoparticles with monolayer precision from one to four layers with the nearly constant basal plane size of 5 nm, and their size-dependent catalytic activity in the HER. Using density functional theory (DFT) calculations, we identified the most favorable single-, double-, and triple-layer MoS2 model structures for the HER, and calculated elementary step energetics of the HER over these three model structures. Combining HER activity measurements and the DFT calculation results, we establish that the turnover frequency of MoS2 nanoparticles in the HER increases in a ...Continue Reading

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Citations

Feb 4, 2016·ACS Applied Materials & Interfaces·Bangjun GuoZiqiang Zhu
Feb 19, 2016·Scientific Reports·Han LiHe Qian
Jun 9, 2015·ACS Applied Materials & Interfaces·John BensonPagona Papakonstantinou
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Nov 3, 2016·ACS Applied Materials & Interfaces·Ningning BaiHongzhou Dong
Mar 18, 2017·Chemical Reviews·Chaoliang TanHua Zhang
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Jul 6, 2017·Physical Chemistry Chemical Physics : PCCP·Da Young HwangDong Hack Suh
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Jul 18, 2018·Beilstein Journal of Nanotechnology·Sha Dong, Zhiguo Wang
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Feb 12, 2020·ACS Applied Materials & Interfaces·Jarin JoynerPulickel M Ajayan
Jun 30, 2019·ACS Applied Materials & Interfaces·Hao-Zheng YuXiao-Yu Yang

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