東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Functional Materials for the Direct ...

Modayil Korah, Mani.

FindBook

Google Book

Amazon

博客來

Functional Materials for the Direct Air Capture of Carbon Dioxide.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Functional Materials for the Direct Air Capture of Carbon Dioxide./
作者:	Modayil Korah, Mani.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2024,
面頁冊數:	182 p.
附註:	Source: Dissertations Abstracts International, Volume: 84-11, Section: B.
Contained By:	Dissertations Abstracts International84-11B.
標題:	Chemical engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30426270
ISBN:	9798379528331

Functional Materials for the Direct Air Capture of Carbon Dioxide.
Modayil Korah, Mani.

Functional Materials for the Direct Air Capture of Carbon Dioxide. - Ann Arbor : ProQuest Dissertations & Theses, 2024 - 182 p.

Source: Dissertations Abstracts International, Volume: 84-11, Section: B.

Thesis (Ph.D.)--Arizona State University, 2024.

This item must not be sold to any third party vendors.

The excessive use of fossil fuels over the last few centuries has led to unprecedented changes in climate and a steady increase in the average surface global temperatures. Direct Air Capture(DAC) aims to capture CO2 directly from the atmosphere and alleviate some of the adverse effects of climate change. This dissertation focuses on methodologies to make advanced functional materials that show good potential to be used as DAC sorbents. Details on sorbent material synthesis and post-synthesis methods to obtain high surface area morphologies are described in detail. First, by incorporating K2CO3 into activated carbon (AC) fiber felts, the sorption kinetics was significantly improved by increasing the surface area of K2CO3 in contact with air. The AC-K2CO3 fiber composite felts are flexible, cheap, easy to manufacture, chemically stable, and show excellent DAC capacity and (de)sorption rates, with stable performance up to ten cycles. The best composite felts collected an average of 478 µmol of CO2 per gram of composite during 4 h of exposure to ambient (24% RH) air that had a CO2 concentration of 400-450 ppm over 10 cycles. Secondly, incorporating the amino acid L-arginine (L-Arg) into a poly(vinyl alcohol) (PVA) nanofiber support structure, created porous substrates with very high surface areas of L-Arg available for CO2 sorption. The bio-inspired PVA-Arg nanofiber composites are flexible and show excellent DAC performance compared to bulk L-Arg. The nanofiber composites are fabricated from an electrospinning process using an aqueous polymer solution. High ambient humidity levels improve sorption performance significantly. The best performing nanofiber composite collected 542 µmol of CO2 per gram of composite during 2 h of exposure to ambient, high humidity (100% RH) air that had a CO2 concentration of 400-450 ppm. Finally, poly(vinyl guanidine) (PVG) polymer was synthesized and tested for sorption performance. The fabrication of PVG nanofibers, divinyl benzene crosslinked PVG beads and glutaraldehyde crosslinked PVG were demonstrated. The sorption performance of the fabricated sorbents were tested with the glutaraldehyde crosslinked PVG having a dynamic sorption capacity of over 1 mmol of CO2 per gram of polymer in 3 h. The sorption capability of liquid PVG was also explored.

ISBN: 9798379528331Subjects--Topical Terms:

560457
Chemical engineering.
Subjects--Index Terms:

Climate change mitigation

Functional Materials for the Direct Air Capture of Carbon Dioxide.
LDR:03562nmm a2200409 4500 001 2393459
005 20240318062638.5
006 m o d
007 cr#unu||||||||
008 251215s2024 ||||||||||||||||| ||eng d
020 $a 9798379528331
035 $a (MiAaPQ)AAI30426270
035 $a AAI30426270
040 $a MiAaPQ $c MiAaPQ
100 1 $a Modayil Korah, Mani. $3 3762920
245 1 0 $a Functional Materials for the Direct Air Capture of Carbon Dioxide.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2024
300 $a 182 p.
500 $a Source: Dissertations Abstracts International, Volume: 84-11, Section: B.
500 $a Advisor: Green, Matthew.
502 $a Thesis (Ph.D.)--Arizona State University, 2024.
506 $a This item must not be sold to any third party vendors.
520 $a The excessive use of fossil fuels over the last few centuries has led to unprecedented changes in climate and a steady increase in the average surface global temperatures. Direct Air Capture(DAC) aims to capture CO2 directly from the atmosphere and alleviate some of the adverse effects of climate change. This dissertation focuses on methodologies to make advanced functional materials that show good potential to be used as DAC sorbents. Details on sorbent material synthesis and post-synthesis methods to obtain high surface area morphologies are described in detail. First, by incorporating K2CO3 into activated carbon (AC) fiber felts, the sorption kinetics was significantly improved by increasing the surface area of K2CO3 in contact with air. The AC-K2CO3 fiber composite felts are flexible, cheap, easy to manufacture, chemically stable, and show excellent DAC capacity and (de)sorption rates, with stable performance up to ten cycles. The best composite felts collected an average of 478 µmol of CO2 per gram of composite during 4 h of exposure to ambient (24% RH) air that had a CO2 concentration of 400-450 ppm over 10 cycles. Secondly, incorporating the amino acid L-arginine (L-Arg) into a poly(vinyl alcohol) (PVA) nanofiber support structure, created porous substrates with very high surface areas of L-Arg available for CO2 sorption. The bio-inspired PVA-Arg nanofiber composites are flexible and show excellent DAC performance compared to bulk L-Arg. The nanofiber composites are fabricated from an electrospinning process using an aqueous polymer solution. High ambient humidity levels improve sorption performance significantly. The best performing nanofiber composite collected 542 µmol of CO2 per gram of composite during 2 h of exposure to ambient, high humidity (100% RH) air that had a CO2 concentration of 400-450 ppm. Finally, poly(vinyl guanidine) (PVG) polymer was synthesized and tested for sorption performance. The fabrication of PVG nanofibers, divinyl benzene crosslinked PVG beads and glutaraldehyde crosslinked PVG were demonstrated. The sorption performance of the fabricated sorbents were tested with the glutaraldehyde crosslinked PVG having a dynamic sorption capacity of over 1 mmol of CO2 per gram of polymer in 3 h. The sorption capability of liquid PVG was also explored.
590 $a School code: 0010.
650 4 $a Chemical engineering. $3 560457
650 4 $a Polymer chemistry. $3 3173488
650 4 $a Materials science. $3 543314
653 $a Climate change mitigation
653 $a DAC
653 $a Electrospun materials
653 $a Functional materials
653 $a Polymers
653 $a Direct Air Capture
690 $a 0542
690 $a 0495
690 $a 0794
710 2 $a Arizona State University. $b Chemical Engineering. $3 1682515
773 0 $t Dissertations Abstracts International $g 84-11B.
790 $a 0010
791 $a Ph.D.
792 $a 2024
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30426270