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A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants

Ayomi S. Perera Orcid Logo, Patrick M. Melia Orcid Logo, Reece M.D. Bristow Orcid Logo, James McGettrick Orcid Logo, Richard J. Singer, Joseph C. Bear Orcid Logo, Rosa Busquets Orcid Logo

Microporous and Mesoporous Materials, Volume: 345, Start page: 112276

Swansea University Author: James McGettrick Orcid Logo

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DOI (Published version): 10.1016/j.micromeso.2022.112276

Abstract

Access to clean drinking water is limited for millions around the world and lead to dire health and economic ramifications, particularly in developing nations. This study explores a recyclable, low-cost, non-doped, microporous titanosilicate for effective removal of organic water pollutants. Rhodami...

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Published in: Microporous and Mesoporous Materials
ISSN: 1387-1811
Published: Elsevier BV 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa61556
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Rhodamine B was utilized as a modal pollutant to explore and optimize the activity of the titanosilicate, which evidently occurred via an adsorption and subsequent photocatalytic degradation based bimodal mechanism. The novel titanosilicate has high surface area (SBET of 468 m2/g), is microporous (&#x223C;1.3 nm pore diameter), achieved via a surfactant templating technique. Its&#x2019; physicochemical properties were characterised using FTIR, Raman, BET, SEM, PXRD and XPS. The photocatalytic activity of the material was studied under a solar simulator via time dependent UV&#x2013;vis absorption measurements. The material showed 97% removal of Rhodamine B (5 mg/L) within 3 h, and outperformed nanosized titanium dioxide (anatase:rutile 4:1), the most conventionally used photocatalyst in tertiary water treatment. 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spelling 2022-10-20T10:53:08.0128922 v2 61556 2022-10-14 A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants bdbacc591e2de05180e0fd3cc13fa480 0000-0002-7719-2958 James McGettrick James McGettrick true false 2022-10-14 MTLS Access to clean drinking water is limited for millions around the world and lead to dire health and economic ramifications, particularly in developing nations. This study explores a recyclable, low-cost, non-doped, microporous titanosilicate for effective removal of organic water pollutants. Rhodamine B was utilized as a modal pollutant to explore and optimize the activity of the titanosilicate, which evidently occurred via an adsorption and subsequent photocatalytic degradation based bimodal mechanism. The novel titanosilicate has high surface area (SBET of 468 m2/g), is microporous (∼1.3 nm pore diameter), achieved via a surfactant templating technique. Its’ physicochemical properties were characterised using FTIR, Raman, BET, SEM, PXRD and XPS. The photocatalytic activity of the material was studied under a solar simulator via time dependent UV–vis absorption measurements. The material showed 97% removal of Rhodamine B (5 mg/L) within 3 h, and outperformed nanosized titanium dioxide (anatase:rutile 4:1), the most conventionally used photocatalyst in tertiary water treatment. Interestingly, the titanosilicate displayed a dual mechanism of pollutant removal: an initial rapid removal of 59% due to adsorption during a 30 min equilibrating step in the dark, followed by near complete removal within 3 h. Additionally, a >90% efficiency of Rhodamine B removal by the titanosilicate catalyst was achieved consistently throughout 4 cycles, demonstrating its ability for regeneration and reusability. Such activity has not been previously reported in non-doped or non-composite titanosilicates, and opens up pathways to efficient, low-cost water treatment materials, consisting only of environmentally benign raw materials and synthetic procedures. Journal Article Microporous and Mesoporous Materials 345 112276 Elsevier BV 1387-1811 Photocatalysis; TiO2 alternative; Advanced oxidation; Water treatment; Porous adsorbent 1 11 2022 2022-11-01 10.1016/j.micromeso.2022.112276 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University The authors gratefully acknowledge the funding provided by UKRI HEFCE-GCRF grant and the Department of Chemical and Pharmaceutical Sciences at Kingston University. 2022-10-20T10:53:08.0128922 2022-10-14T10:25:28.2488863 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Ayomi S. Perera 0000-0003-2139-040x 1 Patrick M. Melia 0000-0001-8795-7216 2 Reece M.D. Bristow 0000-0002-9627-8132 3 James McGettrick 0000-0002-7719-2958 4 Richard J. Singer 5 Joseph C. Bear 0000-0001-6504-4723 6 Rosa Busquets 0000-0001-9033-4757 7 61556__25511__2eebcaa194da47e99cbb237839fa3628.pdf 61556_VoR.pdf 2022-10-20T10:49:53.7464769 Output 4118662 application/pdf Version of Record true © 2022 The Authors.This is an open access article under the CC BY-NC-ND license true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants
spellingShingle A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants
James McGettrick
title_short A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants
title_full A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants
title_fullStr A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants
title_full_unstemmed A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants
title_sort A non-doped microporous titanosilicate for bimodal adsorption-photocatalysis based removal of organic water pollutants
author_id_str_mv bdbacc591e2de05180e0fd3cc13fa480
author_id_fullname_str_mv bdbacc591e2de05180e0fd3cc13fa480_***_James McGettrick
author James McGettrick
author2 Ayomi S. Perera
Patrick M. Melia
Reece M.D. Bristow
James McGettrick
Richard J. Singer
Joseph C. Bear
Rosa Busquets
format Journal article
container_title Microporous and Mesoporous Materials
container_volume 345
container_start_page 112276
publishDate 2022
institution Swansea University
issn 1387-1811
doi_str_mv 10.1016/j.micromeso.2022.112276
publisher Elsevier BV
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
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description Access to clean drinking water is limited for millions around the world and lead to dire health and economic ramifications, particularly in developing nations. This study explores a recyclable, low-cost, non-doped, microporous titanosilicate for effective removal of organic water pollutants. Rhodamine B was utilized as a modal pollutant to explore and optimize the activity of the titanosilicate, which evidently occurred via an adsorption and subsequent photocatalytic degradation based bimodal mechanism. The novel titanosilicate has high surface area (SBET of 468 m2/g), is microporous (∼1.3 nm pore diameter), achieved via a surfactant templating technique. Its’ physicochemical properties were characterised using FTIR, Raman, BET, SEM, PXRD and XPS. The photocatalytic activity of the material was studied under a solar simulator via time dependent UV–vis absorption measurements. The material showed 97% removal of Rhodamine B (5 mg/L) within 3 h, and outperformed nanosized titanium dioxide (anatase:rutile 4:1), the most conventionally used photocatalyst in tertiary water treatment. Interestingly, the titanosilicate displayed a dual mechanism of pollutant removal: an initial rapid removal of 59% due to adsorption during a 30 min equilibrating step in the dark, followed by near complete removal within 3 h. Additionally, a >90% efficiency of Rhodamine B removal by the titanosilicate catalyst was achieved consistently throughout 4 cycles, demonstrating its ability for regeneration and reusability. Such activity has not been previously reported in non-doped or non-composite titanosilicates, and opens up pathways to efficient, low-cost water treatment materials, consisting only of environmentally benign raw materials and synthetic procedures.
published_date 2022-11-01T04:20:27Z
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score 11.036116

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