Au Nanoparticle Enhancement of Plasma-Driven Methane Conversion into Higher Order Hydrocarbons via Hot Electrons
Au Nanoparticle Enhancement of Plasma-Driven Methane Conversion into Higher Order Hydrocarbons via Hot Electrons
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金纳米粒子通过热电子增强等离子体驱动的甲烷转化为高阶碳氢化合物
DOI:
10.1021/acsanm.0c02912
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发表时间:
2020
影响因子:
5.9
通讯作者:
Cronin, Stephen B.
中科院分区:
文献类型:
--
作者:
Zhao, Bofan;Aravind, Indu;Yang, Sisi;Wang, Yu;Li, Ruoxi;Cronin, Stephen B.
We demonstrate a more than 50-fold enhancement in the upconversion of methane to higher order hydrocarbons by discharging a nanosecond-pulsed plasma across Au nanoparticles. Here, the enhancement occurs as a result of the local field enhancement provided by the nanoparticles. The transient nature of the pulsed plasma enables the structure of these delicate nanoparticles to be preserved during the plasma discharge by producing a low-temperature plasma. Plasma emission spectroscopy shows signatures of the C2Swan bands with and without the presence of these nanoparticles. Mass spectrometry demonstrates that methane is converted into higher order hydrocarbons with different groups of peaks representing species with molecular masses of 35–45, 45–60, and 60–70 amu, corresponding to C3, C4, and C5species, respectively, under plasma discharge conditions. Electrostatic simulations show that a 3–4× enhancement in the field is produced at the nanoparticle surfaces. The exponential relation between electric field strength and plasma formation gives rise to a 50× increase in highly reactive, plasma-initiated radical species that are responsible for driving the methane upconversion process. This upconversion is important for several applications including mitigation of greenhouse emissions and improving the combustion of natural gas.
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影响因子:
8.6
作者:
K. Kneipp;H. Kneipp;P. Corio;S. Brown;K. Shafer;J. Motz;L. Perelman;E. Hanlon;A. Marucci
通讯作者:
K. Kneipp;H. Kneipp;P. Corio;S. Brown;K. Shafer;J. Motz;L. Perelman;E. Hanlon;A. Marucci
影响因子:
1.5
作者:
Fei Wang;Jian-bang Liu;J. Sinibaldi;C. Brophy;A. Kuthi;Chunqi Jiang;P. Ronney;Martin A. Gundersen
通讯作者:
Fei Wang;Jian-bang Liu;J. Sinibaldi;C. Brophy;A. Kuthi;Chunqi Jiang;P. Ronney;Martin A. Gundersen
影响因子:
3.6
作者:
A. Piel
通讯作者:
A. Piel
影响因子:
2.1
作者:
P. Borziak;Y. Kulyupin;P. Tomchuk
通讯作者:
P. Tomchuk
DOI:
10.1016/s0167-2991(08)60120-2
发表时间:
1991
期刊:
Studies in Surface Science and Catalysis
影响因子:
--
作者:
O. A. Rokstad;O. Olsvik;A. Holmen
通讯作者:
A. Holmen