Plasmonic Core–Shell Zirconium Nitride–Silicon Oxynitride Nanoparticles,ACS Energy Letters

当前位置： X-MOL 学术 › ACS Energy Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Plasmonic Core–Shell Zirconium Nitride–Silicon Oxynitride Nanoparticles
ACS Energy Letters ( IF 19.3 ) Pub Date : 2018-09-10 00:00:00 , DOI: 10.1021/acsenergylett.8b01478
Stephen Exarhos ₁ , Alejandro Alvarez-Barragan ₁ , Ece Aytan ₂ , Alexander A. Balandin _{2,

3} , Lorenzo Mangolini _{1,

2}

Affiliation

We discuss the synthesis and properties of plasmonic zirconium nitride nanocrystals produced using a nonthermal plasma reactor. The process enables the continuous conversion of chemical precursors into free-standing ∼10 nm diameter nanoparticles. Oxidation limits the resonant plasmon energy from ∼2.6 eV for ideal unoxidized particles to ∼2.1 eV for particles exposed to air at room temperature. A simple modification to the plasma process allows the in-flight growth of a conformal silicon oxynitride shell onto the zirconium nitride core. The shell inhibits the oxidation of the core, resulting in particles with a plasmon energy of 2.35 eV. These particles show good plasmonic behavior even after annealing in air at 300 °C, largely improved when compared to unprotected particles that oxidize and lose plasmonic activity at the same temperature. This work represents a step toward the development of earth-abundant, thermally and chemically resistant nanoparticles that can offer an inexpensive alternative to gold and silver and extended applicability in harsh environments.

中文翻译：

等离子体核-壳氮化锆-氧氮化硅纳米粒子

我们讨论了使用非热等离子体反应器生产的等离子氮化锆纳米晶体的合成和性能。该工艺能够将化学前体连续转化为直径约10 nm的独立纳米颗粒。氧化将共振等离子体激元能量从理想的未氧化粒子的〜2.6 eV限制为室温下暴露于空气的粒子的〜2.1 eV。对等离子体工艺的简单修改允许在飞行中将共形的氮氧化硅壳在空中生长到氮化锆核上。壳抑制核的氧化，产生等离子激元能量为2.35 eV的颗粒。这些颗粒即使在300°C的空气中退火后也显示出良好的等离子体性能，与未保护的在相同温度下氧化并失去等离子体活性的颗粒相比，具有很大的改善。

更新日期：2018-09-10

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南