Developing a New Generation of Perovskite Oxides Based Composite Materials for CO2 Conversion into Fuels

开发新一代钙钛矿氧化物基复合材料用于将二氧化碳转化为燃料

• 批准号: 1206562
• 负责人: Alexander Orlov
• 金额: $ 36.82万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1206562&HistoricalAwards=false
• 关键词: Developing; New; Generation; Perovskite; Oxides

NON-TECHNICAL DESCRIPTION: The efficient conversion of carbon dioxide into fuels has an enormous potential to address both greenhouse emission issues and sustainable energy challenges. Significant challenges exist in producing materials, which can facilitate this conversion by utilizing solar energy, especially the visible part of the solar spectrum. A limited number of known materials exhibit very low quantum efficiency for carbon dioxide conversions, while being activated only by ultraviolet (UV) light. If successful, this project can significantly impact energy and environmental areas by using green routes for producing valuable chemicals. It will reduce carbon dioxide emissions by utilizing sustainable sources of energy, such as sunlight.TECHNICAL DETAILS: The major obstacle to progress in this scientific area is a lack of understanding of the relationship between synthetic method, micro- and nano-architecture and nanostructure, and the resulting physico-chemical and reactivity properties. Achieving this understanding and developing entirely new fabrication methods, applicable on an industrial scale, are major challenges that must be met before these new functional properties can find actual practical application. Accomplishing these two objectives, one scientific and the other technical, would correspond to a major breakthrough that would make possible a whole range of new applications. This project focuses on synthesis of perovskite-based nanostructured films and powders modified at the nanoscopic level by a variety of techniques that allow chemical doping, control of crystal structure, defect concentration and imposition of unusual new morphologies. This research undertakes an entirely new direction for achieving photocatalytic conversion of carbon dioxide into valuable chemical products. This project aims at exploring several strategies to establish a link between reactivity and physicochemical properties of these materials through both bulk and surface sensitive characterization techniques. This project also seeks a better understanding of the role of dopants in carbon dioxide interfacial reactions when the dopants are introduced in the correct oxidation state, concentrations and location where they can lead to significant increase in catalytic activity. An unusual part of this research is the utilization of doped nanostructured films, where both particle size and composition can be precisely controlled by a new nanofabrication method. Additionally, this project aims at exploring morphological control of perovskite oxides to increase their surface area and light trapping capabilities. Finally this project expands the teaching curriculum and research opportunities at both the graduate and undergraduate levels with significant inclusion of underrepresented students.

非技术描述：将二氧化碳有效转化为燃料具有解决温室气体排放问题和可持续能源挑战的巨大潜力。在生产材料方面存在重大挑战，这些材料可以通过利用太阳能，特别是太阳光谱的可见光部分来促进这种转换。有限数量的已知材料对于二氧化碳转化表现出非常低的量子效率，同时仅被紫外（UV）光激活。如果成功，该项目将通过使用绿色路线生产有价值的化学品，对能源和环境领域产生重大影响。技术障碍：目前，该领域的主要障碍是对合成方法、微米和纳米结构以及纳米结构之间的关系以及由此产生的物理化学和反应性能缺乏了解。实现这种理解并开发适用于工业规模的全新制造方法是这些新功能特性获得实际应用之前必须满足的主要挑战。 实现这两个目标，一个是科学目标，另一个是技术目标，将相当于一个重大突破，使一系列新的应用成为可能。该项目的重点是合成钙钛矿基纳米结构薄膜和粉末，通过各种技术在纳米级进行改性，这些技术允许化学掺杂，控制晶体结构，缺陷浓度和施加不寻常的新形态。 这项研究为实现二氧化碳光催化转化为有价值的化学产品提供了一个全新的方向。 该项目旨在探索几种策略，通过本体和表面敏感表征技术建立这些材料的反应性和物理化学性质之间的联系。该项目还寻求更好地了解掺杂剂在二氧化碳界面反应中的作用，当掺杂剂以正确的氧化态，浓度和位置引入时，它们可以导致催化活性的显着增加。这项研究的一个不寻常的部分是利用掺杂的纳米结构薄膜，其中颗粒大小和成分都可以通过一种新的纳米纤维方法精确控制。 此外，该项目旨在探索钙钛矿氧化物的形态控制，以增加其表面积和光捕获能力。最后，该项目扩大了研究生和本科生两级的教学课程和研究机会，并将代表性不足的学生纳入其中。