東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Soft-Templating Synthesis of Mesopor...

Gunathilake, Chamila Asanka.

Linked to FindBook

Google Book

Amazon

博客來

Soft-Templating Synthesis of Mesoporous Silica-Based Materials for Environmental Applications.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Soft-Templating Synthesis of Mesoporous Silica-Based Materials for Environmental Applications./
Author:	Gunathilake, Chamila Asanka.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	162 p.
Notes:	Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
Contained By:	Dissertation Abstracts International78-09B(E).
Subject:	Chemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10592331
ISBN:	9781369733129

Soft-Templating Synthesis of Mesoporous Silica-Based Materials for Environmental Applications.
Gunathilake, Chamila Asanka.

Soft-Templating Synthesis of Mesoporous Silica-Based Materials for Environmental Applications. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 162 p.

Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.

Thesis (Ph.D.)--Kent State University, 2017.

Dissertation research is mainly focus on: 1) the development of mesoporous silica materials with organic pendant and bridging groups (isocyanurate, amidoxime, benzene) and incorporated metal (aluminum, zirconium, calcium, and magnesium) species for high temperature carbon dioxide (CO2) sorption, 2) phosphorous-hydroxy functionalized mesoporous silica materials for water treatment, and 3) amidoxime-modified ordered mesoporous silica materials for uranium sorption under seawater conditions. The goal is to design composite materials for environmental applications with desired porosity, surface area, and functionality by selecting proper metal oxide precursors, organosilanes, tetraethylorthosilicate, (TEOS), and block copolymer templates and by adjusting synthesis conditions. The first part of dissertation presents experimental studies on the merge of aluminum, zirconium, calcium, and magnesium oxides with mesoporous silica materials containing organic pendant (amidoxime) and bridging groups (isocyanurate, benzene) to obtain composite sorbents for CO2 sorption at ambient (0-25 °C) and elevated (60-120 °C) temperatures. These studies indicate that the aforementioned composite sorbents are fairly good for CO2 capture at 25 °C via physisorption mechanism and show a remarkably high affinity toward CO2 chemisorption at 60-120 °C. The second part of dissertation is devoted to silica-based materials with organic functionalities for removal of heavy metal ions such as lead from contaminated water and for recovery of metal ions such as uranium from seawater. First, ordered mesoporous organosilica (OMO) materials with diethylphosphatoethyl and hydroxyphosphatoethyl surface groups were examined for Pb2+ adsorption and showed unprecedented adsorption capacities up to 272 mg/g and 202 mg/g, respectively However, the amidoxime-modified OMO materials were explored for uranium extraction under seawater conditions and showed remarkable capacities reaching 57 mg of uranium per gram of adsorbent.

ISBN: 9781369733129Subjects--Topical Terms:

516420
Chemistry.

Soft-Templating Synthesis of Mesoporous Silica-Based Materials for Environmental Applications.
LDR:03083nmm a2200361 4500 001 2153580
005 20171130090823.5
008 190424s2017 ||||||||||||||||| ||eng d
020 $a 9781369733129
035 $a (MiAaPQ)AAI10592331
035 $a AAI10592331
040 $a MiAaPQ $c MiAaPQ
100 1 $a Gunathilake, Chamila Asanka. $3 3341313
245 1 0 $a Soft-Templating Synthesis of Mesoporous Silica-Based Materials for Environmental Applications.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2017
300 $a 162 p.
500 $a Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
500 $a Adviser: Mietek Jaroniec,Prof.
502 $a Thesis (Ph.D.)--Kent State University, 2017.
520 $a Dissertation research is mainly focus on: 1) the development of mesoporous silica materials with organic pendant and bridging groups (isocyanurate, amidoxime, benzene) and incorporated metal (aluminum, zirconium, calcium, and magnesium) species for high temperature carbon dioxide (CO2) sorption, 2) phosphorous-hydroxy functionalized mesoporous silica materials for water treatment, and 3) amidoxime-modified ordered mesoporous silica materials for uranium sorption under seawater conditions. The goal is to design composite materials for environmental applications with desired porosity, surface area, and functionality by selecting proper metal oxide precursors, organosilanes, tetraethylorthosilicate, (TEOS), and block copolymer templates and by adjusting synthesis conditions. The first part of dissertation presents experimental studies on the merge of aluminum, zirconium, calcium, and magnesium oxides with mesoporous silica materials containing organic pendant (amidoxime) and bridging groups (isocyanurate, benzene) to obtain composite sorbents for CO2 sorption at ambient (0-25 °C) and elevated (60-120 °C) temperatures. These studies indicate that the aforementioned composite sorbents are fairly good for CO2 capture at 25 °C via physisorption mechanism and show a remarkably high affinity toward CO2 chemisorption at 60-120 °C. The second part of dissertation is devoted to silica-based materials with organic functionalities for removal of heavy metal ions such as lead from contaminated water and for recovery of metal ions such as uranium from seawater. First, ordered mesoporous organosilica (OMO) materials with diethylphosphatoethyl and hydroxyphosphatoethyl surface groups were examined for Pb2+ adsorption and showed unprecedented adsorption capacities up to 272 mg/g and 202 mg/g, respectively However, the amidoxime-modified OMO materials were explored for uranium extraction under seawater conditions and showed remarkable capacities reaching 57 mg of uranium per gram of adsorbent.
590 $a School code: 0101.
650 4 $a Chemistry. $3 516420
650 4 $a Chemical engineering. $3 560457
650 4 $a Inorganic chemistry. $3 3173556
650 4 $a Environmental engineering. $3 548583
650 4 $a Environmental science. $3 677245
650 4 $a Materials science. $3 543314
650 4 $a Nanotechnology. $3 526235
650 4 $a Geology. $3 516570
690 $a 0485
690 $a 0542
690 $a 0488
690 $a 0775
690 $a 0768
690 $a 0794
690 $a 0652
690 $a 0372
710 2 $a Kent State University. $b Chemistry. $3 3189995
773 0 $t Dissertation Abstracts International $g 78-09B(E).
790 $a 0101
791 $a Ph.D.
792 $a 2017
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10592331