CAREER: SusChEM: Electrocatalytic Valorization of Biomass Intermediates via 1st-Row Transition Metal Electrocatalysts

职业：SusChEM：通过第一行过渡金属电催化剂实现生物质中间体的电催化增值

基本信息

批准号：
1914546
负责人：
Yujie Sun
金额：
$ 50.6万
依托单位：
University of Cincinnati Main Campus
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2022-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1914546&HistoricalAwards=false
关键词：
CAREER SusChEM Electrocatalytic Valorization Biomass

项目摘要

Biomass, obtained from waste agricultural materials or efficiently - grown plants, has the potential to be a significant, renewable source of clean energy and chemical feedstocks if appropriate methods of chemical conversion can be developed. Dr. Yujie Sun of Utah State University is supported by the Chemical Catalysis Program of the Chemistry Division to pursue research into the investigation of biomass conversion using a novel electrocatalytic process. Electrocatalysis uses electrons provided by an electric current to drive chemical reactions in the controlled and efficient process of catalysis, a chemical pathway that increases the speed and efficiency of the chemical converstion. Dr. Sun's research elucidates the chemical reaction pathways, or mechanistic steps, of the electrocatalytic oxidation of biomass molecules and establishes the relationship between the catalyst composition and its catalytic activity for 1st-row transition metal-based electrocatalysts. For good conductivity and efficient catalytic activity, the transition metals are fabricated as very thin films known as two-dimensional ultrathin "nanosheets". Broader impacts of the research result from the development of an efficient biomass conversion process to produce fuels and other chemicals from renewable biomoass resources. Dr. Sun also creates broader impact opportunities in his work with students in education and outreach activities. He is actively engaged in outreach programs focusing on attracting and mentoring students from groups that are under - represented in the STEM fields, such as Native American undergraduates and economically disadvantaged high school students, as well as creating cutting - edge research-based opportunities in experimental courses for undergraduate students at Utah State University. Even though biomass valorization has been recognized as an attractive strategy in producing nonfossil- based chemical products, the conventional upgrading approaches often require harsh conditions, toxic regents, and/or expensive catalysts. With the support of this CAREER award from the Chemical Catalysis Program of the Chemistry Division, Dr. Yujie Sun of Utah State University is developing an alternative electrocatalytic approach for biomass upgrading utilizing 1st row transition metal-based electrocatalysts. In particular, this project elucidates the mechanistic steps of the electrocatalytic oxidation of 5-hydroxymethyl furfural (HMF, one of the top biomass-derived platform chemicals) under ambient conditions and establishes a composition - activity relationship of 1st-row transition metal oxides (TMOs) for HMF valorization. Using this information, ultrathin two-dimensional (2D) TMOs of the most promising compositions are prepared and interrogated to obtain their intrinsic electrocatalytic activities for HMF oxidation. The ultrathin electocatalyst thickness is designed to circumvent electric resistivity problems. The experimental activities are supported with density functional theory (DFT) calculations, conducted in parallel with the experiments, and are used to aid the interpretation of measured activity trends and other variables in the composition-activity relationship. Broader impacts of the research result from the development of an efficient biomass conversion process to produce fuels and other chemicals from renewable biomoass resources. Dr. Sun also creates opportunities for broader impacts in student training and mentorship in his education and outreach activities. He is actively engaged in outreach programs that are focused on students from groups under - represented in the STEM fields, such as Native American undergraduates and economically disadvantaged high school students, as well as creating cutting - edge research-based opportunities in experimental courses for undergraduate students in Utah.

从废物农业材料或有效的植物中获得的生物量有可能成为重要的，可再生的清洁能源和化学原料的来源，如果适当的化学转化方法。犹他州立大学的Yujie Sun博士得到了化学部的化学催化计划的支持，该计划使用新型的电催化过程进行研究研究生物量转化的研究。电催化使用电流提供的电子在受控和有效的催化过程中驱动化学反应，这是一种化学途径，可提高化学转化的速度和效率。 Sun博士的研究阐明了生物量分子的电催化氧化的化学反应途径或机械步骤，并建立了催化剂组成与其对第一线基于金属基于金属的电催化剂的催化活性之间的关系。为了良好的电导率和有效的催化活性，过渡金属被制造为非常薄的膜，称为二维超薄“纳米片”。研究对研究产生可再生生物量资源产生燃料和其他化学物质的有效生物量转化过程的更广泛影响。 Sun博士在与学生在教育和外展活动中的工作中还创造了更广泛的影响机会。他积极从事宣传计划，专注于吸引和指导STEM领域代表的团体的学生，例如美洲原住民的本科生和经济上处于不利的高中生，以及在犹他州大学的本科生的实验课程中创造基于切割的基于研究的基于研究的基于研究的机会。即使生物质价值被认为是生产非化学化学产品的一种有吸引力的策略，但常规的升级方法通常需要恶劣的条件，有毒的摄政和/或昂贵的催化剂。在化学部化学催化计划的这一职业奖的支持下，犹他州立大学的Yujie Sun博士正在开发一种使用第一行转型金属电催化剂的生物质升级的替代电催化方法。特别是，该项目阐明了在环境条件下的5-羟甲基呋喃基（HMF，最高生物质衍生的平台化学品之一）的电催化氧化的机理步骤，并确定了HMF贩运的第一行过渡金属氧化物（TMOS）的组成 - 活性关系。使用这些信息，制备并审问了最有前途的组成的超薄二维（2D）TMO，以获得其内在的电催化活性进行HMF氧化。超薄的催化剂厚度旨在避免电阻率问题。实验活性由与实验并行进行的密度功能理论（DFT）计算支持，并用于帮助解释组成活性关系中测得的活性趋势和其他变量。研究对研究产生可再生生物量资源产生燃料和其他化学物质的有效生物量转化过程的更广泛影响。 Sun博士还为他的教育和外展活动中的学生培训和指导创造了更广泛影响的机会。他积极从事宣传计划，这些计划专注于来自STEM领域的群体的学生，例如美国原住民的本科生和经济上的处于弱势群体的高中生，以及在犹他州大学生的实验课程中创造基于削减的基于研究的基于研究的机会。

项目成果

期刊论文数量（18）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Interfacial Sites between Cobalt Nitride and Cobalt Act as Bifunctional Catalysts for Hydrogen Electrochemistry

DOI：
10.1021/acsenergylett.9b00738
发表时间：
2019-06
期刊：
ACS Energy Letters
影响因子：
22
作者：
Fu-zhan Song;Wei Li;Jiaqi Yang;Guanqun Han;Tao Yan;Xi Liu;Y. Rao;Peilin Liao;Z. Cao;Yujie Sun
通讯作者：
Fu-zhan Song;Wei Li;Jiaqi Yang;Guanqun Han;Tao Yan;Xi Liu;Y. Rao;Peilin Liao;Z. Cao;Yujie Sun

Recent advances of nonprecious and bifunctional electrocatalysts for overall water splitting