CAREER: CAS: Developing Gas Bubbles as a New Tool for Surface-Active Agent Analysis

职业：CAS：开发气泡作为表面活性剂分析的新工具

• 批准号: 1943737
• 负责人: Long Luo
• 金额: $ 65万
• 依托单位: Wayne State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-02-01 至 2025-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1943737&HistoricalAwards=false
• 关键词: CAREER; CAS; Developing; Gas; Bubbles

With support from the Chemical Measurement and Imaging Program in the Division of Chemistry, Professor Long Luo and his group at Wayne State University are working to develop a powerful new approach for the identification and quantitative analysis of an important class of chemical compounds. Specifically, they are targeting molecules known as surfactants, which are widely used as emulsifiers, detergents, fabric softeners, and wetting agents in many household cleaners and industrial products and processes. Naturally occurring surfactants such as glycolipids, lipopeptides, lipoproteins, fatty acids, neutral lipids, and phospholipids are also essential to the functioning of biological systems. Current methods for surfactant analysis do not detect specific products (selectivity) and low concentrations (sensitivity). Professor Luo and his group are developing new electrochemical approaches to address these challenges. They are also working on applying the tools for on-site detection of polyfluoroalkyl substances (PFAS), a group of emerging surfactants that are contaminants of concern in drinking water. The integrated educational aims of this work seek to increase STEM awareness, interest, and career preparedness across a range of ages, educational levels, and socioeconomic and cultural backgrounds by performing science shows at public locations; developing STEM exposure programs for middle and high school students; and establishing and running a student chapter of the Electrochemical Society at Wayne State University. Notably, the team will reach out to the public about the relevance of science in everyday life by organizing and performing a science show at the Great Lakes Crossing Outlets Mall and Detroit Zoo, the two largest family attractions in Michigan.Limited selectivity and sensitivity have been a long-standing problem in surfactant analysis. To address these issues, the Luo group is using the gas bubble-surfactant interaction to establish a selective and sensitive detection method coupled with rapid and efficient preconcentration. Specifically, the unique amphiphilic characteristics of surfactants affect electrochemical gas bubble nucleation, which in turn impacts an electrochemical signal used for the quantification of surfactants. An approach mimicking sea-spray aerosol enrichment is used to preconcentrate the surfactants. These features are being combined in a portable device to address the unmet need for on-site detection of PFAS in drinking water, addressing concerns arising from U.S. Environmental Protection Agency identification of PFAS quantitation as a national priority. Broader impacts of the educational plan include increasing public interest in science and technology, promoting middle and high school students’ engagement in analytical chemistry activities, and boosting undergraduate and graduate students’ interest in electrochemistry.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.

在化学测量和化学成像计划中的支持下，沃韦恩州立大学教授及其小组正在努力开发一种强大的新方法，以鉴定和定量分析重要类化合物。具体而言，它们是针对称为基础的分子，这些分子被广泛用作乳化剂，确定剂，织物软化剂和润湿剂中的许多家用清洁剂，工业产品和工艺。天然存在的表面活性剂，例如糖脂，脂蛋白，脂蛋白，脂肪酸，中性脂质和磷脂对于生物系统的功能也是必不可少的。当前的生存分析方法未检测到特定产品（选择性）和低浓度（灵敏度）。 Luo教授及其小组正在开发新的电化学方法来应对这些挑战。他们还致力于应用工具以现场检测多氟烷基物质（PFA），这是一组新兴的表面活性剂，它们是饮用水中关注的污染物。这项工作的综合教育目标旨在通过在公共场所进行科学表演，以增加各种年龄，教育水平以及社会经济和文化背景的茎的意识，兴趣和职业准备；为中学生开发STEM暴露计划；并在韦恩州立大学建立和运营电化学学会的学生分会。值得注意的是，该团队将通过在大湖区穿越商场和底特律动物园（MICHIGAN）的两个最大的家庭景点组织和表演科学表演，与公众联系。为了解决这些问题，LUO组正在使用气泡 - 表面活性剂相互作用来建立一种选择性和敏感的检测方法，并快速有效的预浓缩。具体而言，表面活性剂的独特两亲性特征会影响电化学气泡成核，进而影响用于定量表面活性剂的电化学信号。一种模仿海洋喷雾气溶胶富集的方法用于预浓缩表面活性剂。在便携式设备中将功能组合在一起，以满足对饮用水中PFA的现场检测的未满足需求，这解决了美国环境保护局确定PFAS定量作为国家优先事项引起的担忧。教育计划的更广泛影响包括增加公众对科学和技术的兴趣，促进中学和高中学生参与分析化学活动，并增强本科生和研究生对电化学的兴趣。这项奖项反映了NSF的法定任务，并通过使用基金会的知识优点和广泛的影响来评估NSF的法定任务，并通过评估诚实地进行了评估。

项目成果

Highly efficient preconcentration using anodically generated shrinking gas bubbles for per- and polyfluoroalkyl substances (PFAS) detection

• DOI: 10.1007/s00216-022-04175-4
• 发表时间: 2022-06
• 期刊: Analytical and Bioanalytical Chemistry
• 影响因子: 4.3
• 作者: R. Ranaweera;Shizhong An;Yue Cao;Long Luo

Grain‐Boundary‐Rich Noble Metal Nanoparticle Assemblies: Synthesis, Characterization, and Reactivity

• DOI: 10.1002/adfm.202204169
• 发表时间: 2022-06
• 期刊: Advanced Functional Materials
• 影响因子: 19
• 作者: X. Geng;Shuwei Li;Jaeyoung Heo;Yi Peng;Wenhui Hu;Yanchao Liu;Jier Huang;Yang Ren

Electrochemistry of nanobubbles

• DOI: 10.1016/j.coelec.2020.04.019
• 发表时间: 2020-08-01
• 期刊: CURRENT OPINION IN ELECTROCHEMISTRY
• 影响因子: 8.5
• 作者: Ranaweera, Ruchirange;Luo, Long
• 通讯作者: Luo, Long

Recycling Gadolinium from Hospital Effluent via Electrochemical Aerosol Formation

通过电化学气溶胶形成从医院废水中回收钆

• DOI: 10.1021/acsestengg.3c00377
• 发表时间: 2023
• 期刊: ACS ES&T Engineering
• 影响因子: 7.1
• 作者: Ranaweera, Ruchiranga;Wijesinghe, Sethma;Weerarathna, Udeshika;Chowdhury, Aneesa;Kajjam, Aravind Babu;Wang, Bingwen;Dittrich, Timothy M.;Allen, Matthew J.;Luo, Long
• 通讯作者: Luo, Long