Collaborative Research: Understanding the Synergistic Effect of Graphene Plasmonics and Nanoscale Spatial Confinement on Solar-Driven Water Phase Change

合作研究：了解石墨烯等离子体和纳米尺度空间约束对太阳能驱动水相变的协同效应

• 批准号: 1937923
• 负责人: Tengfei Luo
• 金额: $ 21万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1937923&HistoricalAwards=false
• 关键词: Collaborative; Research; Understanding; Synergistic; Effect

Water desalination and wastewater treatment rely on the consumption of significant amounts of energy. For distributed water treatment systems, the cost can be ten times higher than that of the centralized plants. The ability to use renewable energy such as solar energy to replace completely, or in part, the energy needed for water treatment may lead to substantial impacts on the sustainability of the global energy and water supply. Efficient solar-thermal energy conversion for vapor generation is an important green technology that could reduce the energy demands of water desalination and wastewater treatment. However, the low vapor evaporation rate remains a challenge for many practical applications. Graphene plasmonics, which refers to the collective electron oscillation in graphene flakes when excited by light, is believed to contribute to the enhanced solar-to-thermal conversion efficiency of graphene nanopetal structures. In this research project, computer modeling and experiments will be combined to understand the synergistic effects of graphene plasmonics and spatial confinement on thermodynamic properties of water and the solar-driven water evaporation rate. The knowledge gained from this study will assist in developing new graphene plasmonic materials for solar thermal evaporation applications. The project will also include significant educational activities, such as outreach programs for local K-12 students and teachers and undergraduate research programs with open-ended design projects.The goal of this research project is to understand how the plasmon resonance-induced local electric field due to extreme light confinement along the unique nanopetal edges either aligns or dis-aligns water molecular dipoles confined between the vertically freestanding graphene flakes in a porous structure. The research project integrates full electromagnetic wave calculations, molecular simulations, and experimental validation. Some of the specific objectives include understanding the fundamental mechanisms governing the influence of graphene plasmonics-induced thermodynamic property change of nano-confined water on vapor evaporation rate. A combination of electromagnetic wave calculations and molecular simulations will be used to model this system. Additionally, the researchers will validate the modeling results through experiments on solar-driven water phase change mediated by anomalous near-infrared plasmons in uniquely synthesized porous graphene nanopetal structures. This project is expected to reveal new mechanisms of graphene plasmon resonance-mediated water phase transition, which may contribute to improving solar-thermal energy conversion technologies.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

海水淡化和废水处理依赖于大量能源的消耗。 对于分布式水处理系统，成本可能比集中式工厂高出十倍。使用可再生能源（如太阳能）完全或部分替代水处理所需能源的能力可能会对全球能源和水供应的可持续性产生重大影响。 高效的太阳能-热能转换产生蒸汽是一项重要的绿色技术，可以减少海水淡化和废水处理的能源需求。 然而，低蒸汽蒸发速率对于许多实际应用仍然是一个挑战。石墨烯等离子体激元，其是指当被光激发时石墨烯薄片中的集体电子振荡，被认为有助于石墨烯纳米金属结构的增强的太阳能到热转换效率。在这个研究项目中，计算机建模和实验将结合起来，以了解石墨烯等离子体和空间限制对水的热力学性质和太阳能驱动的水蒸发速率的协同效应。从这项研究中获得的知识将有助于开发新的石墨烯等离子体材料用于太阳能热蒸发应用。该项目还将包括重要的教育活动，例如为当地K-12学生和教师的推广计划以及具有开放式设计项目的本科生研究计划。该研究项目的目标是了解由于极端光限制沿着独特的纳米金属边缘的等离子体共振诱导的局部电场是如何对齐或错位的。使限制在多孔结构中的垂直独立的石墨烯薄片之间的水分子偶极子对准。 该研究项目集成了完整的电磁波计算，分子模拟和实验验证。 一些具体的目标包括理解石墨烯等离子体引起的纳米约束水的热力学性质变化对蒸汽蒸发速率的影响的基本机制。 电磁波计算和分子模拟的组合将被用来模拟这个系统。 此外，研究人员将通过在独特合成的多孔石墨烯纳米结构中由异常近红外等离子体介导的太阳能驱动的水相变实验来验证建模结果。该项目有望揭示石墨烯等离子体共振介导的水相变的新机制，这可能有助于改善太阳能-热能转换技术。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Anisotropically tuning interfacial thermal conductance between graphite and poly(ethylene oxide) by lithium-ion intercalation: A molecular dynamics study

• DOI: 10.1016/j.ijheatmasstransfer.2022.123134
• 发表时间: 2022
• 期刊: International Journal of Heat and Mass Transfer
• 影响因子: 5.2
• 作者: Siyu Tian;Zhihao Xu;Shiwen Wu;T. Luo;Guoping Xiong

Enhanced thermal transport across the interface between charged graphene and poly(ethylene oxide) by non-covalent functionalization

• DOI: 10.1016/j.ijheatmasstransfer.2021.122188
• 发表时间: 2021-11
• 期刊: International Journal of Heat and Mass Transfer
• 影响因子: 5.2
• 作者: Siyu Tian;Dezhao Huang;Zhihao Xu;Shiwen Wu;T. Luo;Guoping Xiong

Effect of electric field on water free energy in graphene nanochannel

• DOI: 10.1063/5.0080876
• 发表时间: 2022-07
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: Dezhao Huang;Shiwen Wu;Guoping Xiong;T. Luo

Simultaneous solar-driven seawater desalination and continuous oil recovery

同步太阳能驱动海水淡化和连续采油

• DOI: 10.1016/j.nanoen.2022.108160
• 发表时间: 2023
• 期刊: Nano Energy
• 影响因子: 17.6
• 作者: Wu, Shiwen;Jian, Ruda;Tian, Siyu;Zhou, Long;Luo, Tengfei;Xiong, Guoping
• 通讯作者: Xiong, Guoping

Biocompatible Direct Deposition of Functionalized Nanoparticles Using Shrinking Surface Plasmonic Bubble

• DOI: 10.1002/admi.202000597
• 发表时间: 2020-06-01
• 期刊: ADVANCED MATERIALS INTERFACES
• 影响因子: 5.4
• 作者: Moon, Seunghyun;Zhang, Qiushi;Luo, Tengfei
• 通讯作者: Luo, Tengfei