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Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water

Saima Farooq, Rongsheng Cai Orcid Logo, James McGettrick Orcid Logo, Emmanuel Pean, Matthew Davies Orcid Logo, Ahmed S. Al Harrasi, Richard Palmer Orcid Logo, Chedly Tizaoui Orcid Logo

Process Safety and Environmental Protection, Volume: 172, Pages: 1 - 15

Swansea University Authors: Saima Farooq, Rongsheng Cai Orcid Logo, James McGettrick Orcid Logo, Emmanuel Pean, Matthew Davies Orcid Logo, Richard Palmer Orcid Logo, Chedly Tizaoui Orcid Logo

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DOI (Published version): 10.1016/j.psep.2023.02.003

Abstract

Steroid hormones, being potent endocrine-disruptors, are a menace to human health and aquatic life. Herein, visible-light induced photocatalytic degradation of estrone (E1) by hexagonal copper selenide (CuSe) nanoflakes has been reported. CuSe was synthesised by a facile and low-temperature (100 oC)...

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Published in: Process Safety and Environmental Protection
ISSN: 0957-5820
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa62603
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Herein, visible-light induced photocatalytic degradation of estrone (E1) by hexagonal copper selenide (CuSe) nanoflakes has been reported. CuSe was synthesised by a facile and low-temperature (100 oC) co-precipitation method and was characterised. The nanocrystals were of stoichiometric Cu:Se ratio with Se2- and Cu in the + 1/+ 2 mixed-valence state and exhibited laminar, flake-like morphology with a preferred hexagonal close-packed structure (P63/mmc) having average particle size and thickness of 0.229 &#xB1; 0.146 &#xB5;m and 0.05 &#xB1; 0.02 &#xB5;m, respectively. The adsorption isotherms of E1 were linear and the adsorption process was exothermic. The reactivity of E1 under aqueous suspensions of CuSe exposed to visible light exhibited pseudo-first-order kinetics with a rate constant, k, that varied with initial E1 concentration, light power, catalyst dose, and pH. Particularly, k was almost constant over the range pH5&#x2013;9 but substantially increased as pH rose to 11, while light power and catalyst dose increased k up to a maximum, and the initial concentration reduced k. Surprisingly, CuSe oxidised E1, even in the absence of light, and leached species that were identified and their time-dependency was determined. We concluded that the disappearance of E1 by CuSe is attributed to synergetic effects of adsorption, oxidation by CuSe, and photocatalytic degradation. Supported by liquid-mass spectrometry analysis and molecular chemistry calculations, we also suggested a possible mechanism for E1 degradation. Thus, hexagonal CuSe nanocrystals can be a promising candidate for the treatment of endocrine-disrupting chemicals (EDC)-contaminated wastewaters.</abstract><type>Journal Article</type><journal>Process Safety and Environmental Protection</journal><volume>172</volume><journalNumber/><paginationStart>1</paginationStart><paginationEnd>15</paginationEnd><publisher>Elsevier BV</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0957-5820</issnPrint><issnElectronic/><keywords>Estrone; Emerging contaminants; Photocatalysis; Adsorption; Copper selenide</keywords><publishedDay>1</publishedDay><publishedMonth>4</publishedMonth><publishedYear>2023</publishedYear><publishedDate>2023-04-01</publishedDate><doi>10.1016/j.psep.2023.02.003</doi><url/><notes/><college>COLLEGE NANME</college><department>Science and Engineering - Faculty</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>FGSEN</DepartmentCode><institution>Swansea University</institution><apcterm>SU Library paid the OA fee (TA Institutional Deal)</apcterm><funders/><projectreference/><lastEdited>2023-02-23T16:07:02.4245882</lastEdited><Created>2023-02-07T16:52:27.0594806</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Chemical Engineering</level></path><authors><author><firstname>Saima</firstname><surname>Farooq</surname><order>1</order></author><author><firstname>Rongsheng</firstname><surname>Cai</surname><orcid>0000-0002-2148-0563</orcid><order>2</order></author><author><firstname>James</firstname><surname>McGettrick</surname><orcid>0000-0002-7719-2958</orcid><order>3</order></author><author><firstname>Emmanuel</firstname><surname>Pean</surname><order>4</order></author><author><firstname>Matthew</firstname><surname>Davies</surname><orcid>0000-0003-2595-5121</orcid><order>5</order></author><author><firstname>Ahmed S. Al</firstname><surname>Harrasi</surname><order>6</order></author><author><firstname>Richard</firstname><surname>Palmer</surname><orcid>0000-0001-8728-8083</orcid><order>7</order></author><author><firstname>Chedly</firstname><surname>Tizaoui</surname><orcid>0000-0003-2159-7881</orcid><order>8</order></author></authors><documents><document><filename>62603__26513__0179bafde499401680a5e068fd0be3a3.pdf</filename><originalFilename>62603.pdf</originalFilename><uploaded>2023-02-09T11:50:43.0325055</uploaded><type>Output</type><contentLength>5254599</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>This is an open access article under the CC BY license</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>http://creativecommons.org/licenses/by/4.0/</licence></document></documents><OutputDurs/></rfc1807>
spelling 2023-02-23T16:07:02.4245882 v2 62603 2023-02-07 Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water a415bce540d4b9b0634f9a3cc8ad9483 Saima Farooq Saima Farooq true false c2d38332a07bde5ce1ce66d8750f652e 0000-0002-2148-0563 Rongsheng Cai Rongsheng Cai true false bdbacc591e2de05180e0fd3cc13fa480 0000-0002-7719-2958 James McGettrick James McGettrick true false fe9108445b985e2687ca3ccfc5c73812 Emmanuel Pean Emmanuel Pean true false 4ad478e342120ca3434657eb13527636 0000-0003-2595-5121 Matthew Davies Matthew Davies true false 6ae369618efc7424d9774377536ea519 0000-0001-8728-8083 Richard Palmer Richard Palmer true false 4b34a0286d3c0b0b081518fa6987031d 0000-0003-2159-7881 Chedly Tizaoui Chedly Tizaoui true false 2023-02-07 FGSEN Steroid hormones, being potent endocrine-disruptors, are a menace to human health and aquatic life. Herein, visible-light induced photocatalytic degradation of estrone (E1) by hexagonal copper selenide (CuSe) nanoflakes has been reported. CuSe was synthesised by a facile and low-temperature (100 oC) co-precipitation method and was characterised. The nanocrystals were of stoichiometric Cu:Se ratio with Se2- and Cu in the + 1/+ 2 mixed-valence state and exhibited laminar, flake-like morphology with a preferred hexagonal close-packed structure (P63/mmc) having average particle size and thickness of 0.229 ± 0.146 µm and 0.05 ± 0.02 µm, respectively. The adsorption isotherms of E1 were linear and the adsorption process was exothermic. The reactivity of E1 under aqueous suspensions of CuSe exposed to visible light exhibited pseudo-first-order kinetics with a rate constant, k, that varied with initial E1 concentration, light power, catalyst dose, and pH. Particularly, k was almost constant over the range pH5–9 but substantially increased as pH rose to 11, while light power and catalyst dose increased k up to a maximum, and the initial concentration reduced k. Surprisingly, CuSe oxidised E1, even in the absence of light, and leached species that were identified and their time-dependency was determined. We concluded that the disappearance of E1 by CuSe is attributed to synergetic effects of adsorption, oxidation by CuSe, and photocatalytic degradation. Supported by liquid-mass spectrometry analysis and molecular chemistry calculations, we also suggested a possible mechanism for E1 degradation. Thus, hexagonal CuSe nanocrystals can be a promising candidate for the treatment of endocrine-disrupting chemicals (EDC)-contaminated wastewaters. Journal Article Process Safety and Environmental Protection 172 1 15 Elsevier BV 0957-5820 Estrone; Emerging contaminants; Photocatalysis; Adsorption; Copper selenide 1 4 2023 2023-04-01 10.1016/j.psep.2023.02.003 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University SU Library paid the OA fee (TA Institutional Deal) 2023-02-23T16:07:02.4245882 2023-02-07T16:52:27.0594806 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Saima Farooq 1 Rongsheng Cai 0000-0002-2148-0563 2 James McGettrick 0000-0002-7719-2958 3 Emmanuel Pean 4 Matthew Davies 0000-0003-2595-5121 5 Ahmed S. Al Harrasi 6 Richard Palmer 0000-0001-8728-8083 7 Chedly Tizaoui 0000-0003-2159-7881 8 62603__26513__0179bafde499401680a5e068fd0be3a3.pdf 62603.pdf 2023-02-09T11:50:43.0325055 Output 5254599 application/pdf Version of Record true This is an open access article under the CC BY license true eng http://creativecommons.org/licenses/by/4.0/
title Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water
spellingShingle Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water
Saima Farooq
Rongsheng Cai
James McGettrick
Emmanuel Pean
Matthew Davies
Richard Palmer
Chedly Tizaoui
title_short Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water
title_full Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water
title_fullStr Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water
title_full_unstemmed Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water
title_sort Visible-light induced photocatalytic degradation of estrone (E1) with hexagonal copper selenide nanoflakes in water
author_id_str_mv a415bce540d4b9b0634f9a3cc8ad9483
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author_id_fullname_str_mv a415bce540d4b9b0634f9a3cc8ad9483_***_Saima Farooq
c2d38332a07bde5ce1ce66d8750f652e_***_Rongsheng Cai
bdbacc591e2de05180e0fd3cc13fa480_***_James McGettrick
fe9108445b985e2687ca3ccfc5c73812_***_Emmanuel Pean
4ad478e342120ca3434657eb13527636_***_Matthew Davies
6ae369618efc7424d9774377536ea519_***_Richard Palmer
4b34a0286d3c0b0b081518fa6987031d_***_Chedly Tizaoui
author Saima Farooq
Rongsheng Cai
James McGettrick
Emmanuel Pean
Matthew Davies
Richard Palmer
Chedly Tizaoui
author2 Saima Farooq
Rongsheng Cai
James McGettrick
Emmanuel Pean
Matthew Davies
Ahmed S. Al Harrasi
Richard Palmer
Chedly Tizaoui
format Journal article
container_title Process Safety and Environmental Protection
container_volume 172
container_start_page 1
publishDate 2023
institution Swansea University
issn 0957-5820
doi_str_mv 10.1016/j.psep.2023.02.003
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 - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 1
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description Steroid hormones, being potent endocrine-disruptors, are a menace to human health and aquatic life. Herein, visible-light induced photocatalytic degradation of estrone (E1) by hexagonal copper selenide (CuSe) nanoflakes has been reported. CuSe was synthesised by a facile and low-temperature (100 oC) co-precipitation method and was characterised. The nanocrystals were of stoichiometric Cu:Se ratio with Se2- and Cu in the + 1/+ 2 mixed-valence state and exhibited laminar, flake-like morphology with a preferred hexagonal close-packed structure (P63/mmc) having average particle size and thickness of 0.229 ± 0.146 µm and 0.05 ± 0.02 µm, respectively. The adsorption isotherms of E1 were linear and the adsorption process was exothermic. The reactivity of E1 under aqueous suspensions of CuSe exposed to visible light exhibited pseudo-first-order kinetics with a rate constant, k, that varied with initial E1 concentration, light power, catalyst dose, and pH. Particularly, k was almost constant over the range pH5–9 but substantially increased as pH rose to 11, while light power and catalyst dose increased k up to a maximum, and the initial concentration reduced k. Surprisingly, CuSe oxidised E1, even in the absence of light, and leached species that were identified and their time-dependency was determined. We concluded that the disappearance of E1 by CuSe is attributed to synergetic effects of adsorption, oxidation by CuSe, and photocatalytic degradation. Supported by liquid-mass spectrometry analysis and molecular chemistry calculations, we also suggested a possible mechanism for E1 degradation. Thus, hexagonal CuSe nanocrystals can be a promising candidate for the treatment of endocrine-disrupting chemicals (EDC)-contaminated wastewaters.
published_date 2023-04-01T04:22:21Z
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