서브메뉴
검색
Scalable Electrochemical Fabrication of Three-Dimensional Hierarchical Porous Superstructures for Energy and Environmental Remediation
Scalable Electrochemical Fabrication of Three-Dimensional Hierarchical Porous Superstructures for Energy and Environmental Remediation
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260311091544.5
- ISBN
- 9798270229245
- DDC
- 628.5
- 저자명
- Liu, Yifei
- 서명/저자
- Scalable Electrochemical Fabrication of Three-Dimensional Hierarchical Porous Superstructures for Energy and Environmental Remediation / Yifei Liu
- 발행사항
- [Sl] : The University of Texas at Austin, 2025
- 형태사항
- 1 electronic resource (124 pages)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisors: Fan, Donglei Committee members: Roy, Ajit K.; Liu, Yuanyue; Ray, Chen.
- 학위논문주기
- - Ph.D. : The University of Texas at Austin, 2025.
- 초록/해제
- 요약Hierarchical superstructures with feature sizes spanning from micro/nanometers to meters are ubiquitously found in nature. Such unique structures provide advantages in facilitating rapid substance interaction with surroundings at small scales, as well as efficient mass transport at large scales. This dissertation investigates the development and application of hierarchical 3D superstructures through three interconnected studies focusing on predictive fabrication, energy conversion, and environmental remediation applications. In our first study, we addressed the challenges of controlling electrochemical fabrication of 3D microbranched foams by applying machine learning methods to a dataset derived from approximately 160 experiments. We evaluate linear regression, neural network regression, and Gaussian process regression models, with Gaussian regression demonstrating superior accuracy exceeding 87% across multiple structural parameters. This approach reveals the weighted effects of six experimental parameters on the resulting dendritic structures, providing both fundamental understanding of electrodeposition mechanisms and practical guidance for synthetic control. Building on these fabrication insights, our second study develops efficient oxygen evolution reaction (OER) catalysts through strategic design of FeCoNi sulfide-derived (oxy)hydroxides on 3D dendritic foam substrates. By growing microdendritic structures on nickel foam to maximize surface area and active sites, followed by in-situ activation of the outer surface, we create self-supported catalysts that demonstrate exceptional performance with an overpotential of 204.4 mV at 10 mA cm-2, a Tafel slope of 40.0 mV dec-1, and excellent stability over 18 hours of operation without degradation. Our third study establishes a general, economical approach for introducing biomimetic multilevel hierarchical structures to various conductive substrates. Inspired by natural systems such as the human lung, we develop an electrochemical process that creates features ranging from nanometers to centimeters, which simultaneously enhance surface area and mass transport efficiency. These structures exhibit a two-order-of-magnitude increase in specific surface area and demonstrate practical utility in flow-assisted water treatment, achieving 99% mercury removal within 30 minutes to meet EPA drinking water standards. Finally, we transformed the Ni/Cu dendrites into graphite structures, which we then applied to water disinfection applications, achieving both enhanced mechanical stability and comparable disinfection performance. This research advances both the fundamental understanding of hierarchical structure formation and provides practical fabrication approaches for high-performance materials in energy conversion and environmental applications.
- 언어주기
- English
- 일반주제명
- Physical chemistry
- 일반주제명
- Energy
- 일반주제명
- Materials science
- 기타저자
- The University of Texas at Austin Materials Science and Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260311s2025 us eng d■001000017361132
■00520260311091544.5
■006m o d
■007cr|nu||||||||
■020 ▼a9798270229245
■040 ▼aMiAaPQD▼beng▼cMiAaPQD▼erda
■082 ▼a628.5
■1001 ▼aLiu, Yifei▼eauthor.
■24510▼aScalable Electrochemical Fabrication of Three-Dimensional Hierarchical Porous Superstructures for Energy and Environmental Remediation ▼cYifei Liu
■260 ▼a[Sl]▼bThe University of Texas at Austin▼c2025
■264 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a1 electronic resource (124 pages)
■336 ▼atext▼btxt▼2rdacontent
■337 ▼acomputer▼bc▼2rdamedia
■338 ▼aonline resource▼bcr▼2rdacarrier
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisors: Fan, Donglei Committee members: Roy, Ajit K.; Liu, Yuanyue; Ray, Chen.
■5021 ▼bPh.D.▼cThe University of Texas at Austin▼d2025.
■520 ▼aHierarchical superstructures with feature sizes spanning from micro/nanometers to meters are ubiquitously found in nature. Such unique structures provide advantages in facilitating rapid substance interaction with surroundings at small scales, as well as efficient mass transport at large scales. This dissertation investigates the development and application of hierarchical 3D superstructures through three interconnected studies focusing on predictive fabrication, energy conversion, and environmental remediation applications. In our first study, we addressed the challenges of controlling electrochemical fabrication of 3D microbranched foams by applying machine learning methods to a dataset derived from approximately 160 experiments. We evaluate linear regression, neural network regression, and Gaussian process regression models, with Gaussian regression demonstrating superior accuracy exceeding 87% across multiple structural parameters. This approach reveals the weighted effects of six experimental parameters on the resulting dendritic structures, providing both fundamental understanding of electrodeposition mechanisms and practical guidance for synthetic control. Building on these fabrication insights, our second study develops efficient oxygen evolution reaction (OER) catalysts through strategic design of FeCoNi sulfide-derived (oxy)hydroxides on 3D dendritic foam substrates. By growing microdendritic structures on nickel foam to maximize surface area and active sites, followed by in-situ activation of the outer surface, we create self-supported catalysts that demonstrate exceptional performance with an overpotential of 204.4 mV at 10 mA cm-2, a Tafel slope of 40.0 mV dec-1, and excellent stability over 18 hours of operation without degradation. Our third study establishes a general, economical approach for introducing biomimetic multilevel hierarchical structures to various conductive substrates. Inspired by natural systems such as the human lung, we develop an electrochemical process that creates features ranging from nanometers to centimeters, which simultaneously enhance surface area and mass transport efficiency. These structures exhibit a two-order-of-magnitude increase in specific surface area and demonstrate practical utility in flow-assisted water treatment, achieving 99% mercury removal within 30 minutes to meet EPA drinking water standards. Finally, we transformed the Ni/Cu dendrites into graphite structures, which we then applied to water disinfection applications, achieving both enhanced mechanical stability and comparable disinfection performance. This research advances both the fundamental understanding of hierarchical structure formation and provides practical fabrication approaches for high-performance materials in energy conversion and environmental applications.
■546 ▼aEnglish
■590 ▼aSchool code: 0227
■650 4▼aPhysical chemistry
■650 4▼aEnergy
■650 4▼aMaterials science
■650 4▼aEnvironmental engineering
■653 ▼aElectrochemical fabrication
■653 ▼aPorous superstructures
■653 ▼aEnvironmental remediation
■7102 ▼aThe University of Texas at Austin▼bMaterials Science and Engineering.▼edegree granting institution.
■7201 ▼aFan, Donglei▼edegree supervisor.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17361132▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
Preview
Export
ChatGPT Discussion
AI Recommended Related Books
Подробнее информация.
- Бронирование
- не существует
- моя папка
- Первый запрос зрения
- Non-Book Loan Application
- Nighttime Book Loan Application
Available after logging in.


