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Design of Organic-Inorganic Hybrid Membranes Using Density Functional Theory and Machine Learning
Design of Organic-Inorganic Hybrid Membranes Using Density Functional Theory and Machine L...
Design of Organic-Inorganic Hybrid Membranes Using Density Functional Theory and Machine Learning

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자료유형  
 학위논문 서양
최종처리일시  
20260209102902
ISBN  
9798265405272
DDC  
000
저자명  
Liu, Yifan.
서명/저자  
Design of Organic-Inorganic Hybrid Membranes Using Density Functional Theory and Machine Learning
발행사항  
[Sl] : Georgia Institute of Technology, 2023
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2023
형태사항  
165 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Ramprasad, Rampi.
학위논문주기  
Thesis (Ph.D.)--Georgia Institute of Technology, 2023.
초록/해제  
요약Novel organic-inorganic hybrid membranes processed through vapor phase infiltration (VPI) incorporate the advantages of both organic and inorganic materials. Compared to conventional organic membranes, these hybrid materials offer significant improvements in stability when exposed to organic solvents while retaining desirable membrane properties such as high permeability and selectivity. However, the extensive design space involved in developing such membranes, which encompasses polymer chemistry, inorganic chemistry, and hybrid microstructures, poses challenges to traditional trial and error methods. To surmount these obstacles, this work develops a more efficient and systematic approach. It involves three steps that leverage density functional theory (DFT) and machine learning (ML) to develop the knowledge and tools necessary to predict and explore novel VPI organic-inorganic membranes:1. This research entails an in-depth investigation into the interactions between three metal precursors and the prototype polymer of intrinsic microporosity 1 (PIM-1) during the VPI process. Our primary objective was to identify crucial characteristics of polymer-inorganic interactions, decipher structure-property relationships, and unveil significant properties that could contribute to ML model predictions for future materials selection. Our work uncovered two atomic-level mechanisms for solvent stability.2. An ML-based tool predicting sublimation enthalpy was developed to aid chemistry selection and experimental design for precursors. Initial training used a comprehensive DFT dataset of organic molecules constructed in this work due to a lack of metal precursor parameters in the literature. As new data emerged, an active learning algorithm incorporated new chemical species into the model, dynamically improving its accuracy and expanding its applicability.3. An ML model, incorporating multi-task learning and meta-learning, was trained on a new DFT dataset to predict binding energy between metal precursors and polymers. This enhanced the understanding of polymer-inorganic interactions' strength and stability, aiding in the selection of potential precursors. The model provides a promising route for informed precursor selection, VPI process optimization, and the design of hybrid materials with custom properties.This foundational work provides automated and effective tools for the design and development of VPI organic-inorganic hybrid membranes, leveraging the combined capabilities of DFT and ML. The predictive models developed here can be employed alongside the insights derived from our atomic-level mechanistic studies in the selection of suitable polymers and metal precursors for designing energy-efficient organic-inorganic hybrid membranes for chemical separation. In addition, the DFT database and ML models developed in this project serve as valuable instruments to be utilized by researchers for future studies on the sublimation enthalpy and binding energy of organic-inorganic systems, facilitating further advancements in the field of material science. This thesis presents and executes a methodical framework through which future models can be developed for the exploration of novel material spaces.
일반주제명  
Heat treating
일반주제명  
Humidity
일반주제명  
Carbon
일반주제명  
Adsorption
일반주제명  
Water
일반주제명  
Hollow fiber membranes
일반주제명  
Aluminum
일반주제명  
Energy
일반주제명  
Thermodynamics
기타저자  
Georgia Institute of Technology.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
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MARC

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■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Ramprasad,  Rampi.
■5021  ▼aThesis  (Ph.D.)--Georgia  Institute  of  Technology,  2023.
■520    ▼aNovel  organic-inorganic  hybrid  membranes  processed  through  vapor  phase  infiltration  (VPI)  incorporate  the  advantages  of  both  organic  and  inorganic  materials.  Compared  to  conventional  organic  membranes,  these  hybrid  materials  offer  significant  improvements  in  stability  when  exposed  to  organic  solvents  while  retaining  desirable  membrane  properties  such  as  high  permeability  and  selectivity.  However,  the  extensive  design  space  involved  in  developing  such  membranes,  which  encompasses  polymer  chemistry,  inorganic  chemistry,  and  hybrid  microstructures,  poses  challenges  to  traditional  trial  and  error  methods.  To  surmount  these  obstacles,  this  work  develops  a  more  efficient  and  systematic  approach.  It  involves  three  steps  that  leverage  density  functional  theory  (DFT)  and  machine  learning  (ML)  to  develop  the  knowledge  and  tools  necessary  to  predict  and  explore  novel  VPI  organic-inorganic  membranes:1.  This  research  entails  an  in-depth  investigation  into  the  interactions  between  three  metal  precursors  and  the  prototype  polymer  of  intrinsic  microporosity  1  (PIM-1)  during  the  VPI  process.  Our  primary  objective  was  to  identify  crucial  characteristics  of  polymer-inorganic  interactions,  decipher  structure-property  relationships,  and  unveil  significant  properties  that  could  contribute  to  ML  model  predictions  for  future  materials  selection.  Our  work  uncovered  two  atomic-level  mechanisms  for  solvent  stability.2.  An  ML-based  tool  predicting  sublimation  enthalpy  was  developed  to  aid  chemistry  selection  and  experimental  design  for  precursors.  Initial  training  used  a  comprehensive  DFT  dataset  of  organic  molecules  constructed  in  this  work  due  to  a  lack  of  metal  precursor  parameters  in  the  literature.  As  new  data  emerged,  an  active  learning  algorithm  incorporated  new  chemical  species  into  the  model,  dynamically  improving  its  accuracy  and  expanding  its  applicability.3.  An  ML  model,  incorporating  multi-task  learning  and  meta-learning,  was  trained  on  a  new  DFT  dataset  to  predict  binding  energy  between  metal  precursors  and  polymers.  This  enhanced  the  understanding  of  polymer-inorganic  interactions'  strength  and  stability,  aiding  in  the  selection  of  potential  precursors.  The  model  provides  a  promising  route  for  informed  precursor  selection,  VPI  process  optimization,  and  the  design  of  hybrid  materials  with  custom  properties.This  foundational  work  provides  automated  and  effective  tools  for  the  design  and  development  of  VPI  organic-inorganic  hybrid  membranes,  leveraging  the  combined  capabilities  of  DFT  and  ML.  The  predictive  models  developed  here  can  be  employed  alongside  the  insights  derived  from  our  atomic-level  mechanistic  studies  in  the  selection  of  suitable  polymers  and  metal  precursors  for  designing  energy-efficient  organic-inorganic  hybrid  membranes  for  chemical  separation.  In  addition,  the  DFT  database  and  ML  models  developed  in  this  project  serve  as  valuable  instruments  to  be  utilized  by  researchers  for  future  studies  on  the  sublimation  enthalpy  and  binding  energy  of  organic-inorganic  systems,  facilitating  further  advancements  in  the  field  of  material  science.  This  thesis  presents  and  executes  a  methodical  framework  through  which  future  models  can  be  developed  for  the  exploration  of  novel  material  spaces.
■590    ▼aSchool  code:  0078.
■650  4▼aHeat  treating
■650  4▼aHumidity
■650  4▼aCarbon
■650  4▼aAdsorption
■650  4▼aWater
■650  4▼aHollow  fiber  membranes
■650  4▼aAluminum
■650  4▼aEnergy
■650  4▼aThermodynamics
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■690    ▼a0800
■690    ▼a0348
■71020▼aGeorgia  Institute  of  Technology.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0078
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17365955▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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