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

提出了一个为期一年的探索性实验研究计划，研究一种新的高速燃烧合成方法，使用良好的控制CO-空气火焰的铕纳米荧光粉。目标是实现以下：1）高速率合成，2）羟基残留的显著减少，3）窄的纳米磷光体尺度分布，4）铕离子的均匀掺入和5）粒度和荧光性质的控制。为实现这些目标，拟议研究中体现的新特征包括：a）通过在合成中使用低OH浓度火焰，显著减少了纳米颗粒中的羟基残留，B）通过采用一维火焰几何形状，窄的颗粒尺度分布和铕离子的均匀掺入，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尺寸和荧光性质，和d）高速率合成。本发明的成功将不仅为工业提供放大，而且为铕纳米荧光体的工业和应用的开发提供高质量和高速率的合成技术，例如在光学器件和生物医学中。此外，该提案还提出了一项挑战，即在多学科研究领域的前沿研究和学习中教育一名研究生和一名本科生，并为一名高中生提供暑期培训。所提出的用于合成掺铕玻璃纳米颗粒的技术来自不同的专业知识和新方法，并且在规模化，高速率和高质量生产方面比现有方法具有显着优势。 关键是采用无OH CO-空气火焰。然而，该技术未经测试。 燃烧和材料科学研究人员的结合为这个探索性的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”的要求提交的。该奖项由数学和物理科学中的材料研究部门以及工程中的化学和运输系统部门共同支持。

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.