NER: A Novel High Rate Combustion Synthesis Method for Europium-Doped Glass Nanophosphors

提出了一项为期一年的探索性实验研究计划，旨在研究一种利用可控CO-空气火焰合成纳米Eu的新型高速燃烧合成方法。目标是实现以下目标：1)高速率合成，2)显著减少羟基残留，3)狭窄的纳米磷光体尺寸分布，4)均匀掺入Eu离子，5)控制颗粒尺寸和荧光性能。为了实现这些目标，拟议研究中体现的新特征是：a)通过在合成中使用低OH浓度的火焰显著减少纳米颗粒中的羟基残留，b)通过使用一维火焰几何结构来缩小颗粒尺度分布并均匀地掺入Eu离子，c)通过精确地改变合成尺寸、停留时间和火焰温度来控制纳米颗粒的尺寸和荧光性能，以及d)高速合成。本提议的成功不仅将为扩大规模，而且将为工业和开发光学器件和生物医学等领域的应用提供高质量和高速率的合成技术。此外，该提案还提出了一项挑战，即培养一名研究生和一名本科生从事多学科研究领域的前沿研究和学习，并为一名高中生提供暑期培训。拟议的Eu掺杂玻璃纳米颗粒的合成技术来自不同的专业知识和一种新的方法，在放大、高速和高质量生产方面比现有的方法具有显著的优势。关键是采用不含OH的CO-空气火焰。然而，这项技术尚未经过测试。燃烧和材料科学领域的研究人员的结合为这一探索性研究项目带来了互补的专业知识。该提案是应“纳米科学与工程”的征集而提交的。该奖项由数学和物理科学中的材料研究部门和工程中的化学和运输系统部门通过这一倡议共同支持。

A one-year exploratory experimental research program to study of a novel high rate combustion synthesis method using well controlled CO-air flames for europium nanophosphors is proposed. The goal is to achieve the following: 1) a high rate synthesis, 2) significant reduction of hydroxyl residual, 3) narrow nanophosphor scale distribution, 4) uniform incorporation of europium ions and 5) control of particle size and fluorescent properties. The novel features embodied in the proposed study to achieve these goals are: a) significant reduction of hydroxyl residual in nanoparticles by using a low OH concentration flame in synthesis, b) narrow particle scale distribution and uniform incorporation of europium ions by the employment of the one-dimensional flame geometry, c) control of nanoparticle size and fluorescent properties by precisely changing the synthesis size residence time and flame temperature and d) the high rate synthesis. The success of the present proposal will provide not only a scale-up, but also high quality and high rate synthesis technology for industry and for development of applications of europium nanophosphors such as in optical devices and biomedicine. Furthermore, the proposal also provides a challenge to educate one graduate and one undergraduate student in the cutting edge research and study of a multidisciplinary research field and provides summer training of one high school student. The proposed technique for the synthesis of europium-doped glass nanoparticles comes from different expertise and a new method, and holds significant advantage over existing approaches in terms of scale-up, high-rate and high-quality production. The key point is to employ OH free CO-air flame. However, the technique is untested. The combination of the investigators in combustion and materials science brings complementary expertise to this exploratory research project. This proposal was submitted in response to the solicitation "Nanoscale Science and Engineering". The award is jointly supported through this initiative by the Division of Materials Research within Mathematical and Physical Sciences and the Division of Chemical and Transport Systems within Engineering.