Preparation and Photocatalytic Activity of G-c<sub>3</Sub>n<sub>4< Heterojunctions Under Solar Light Illumination

dc.authorid Ozturk, Abdullah/0000-0002-1525-1561
dc.authorid Park, Jongee/0000-0003-1415-6906
dc.authorid Ozturk, Abdullah/0000-0002-1525-1561
dc.authorscopusid 57217093532
dc.authorscopusid 58155971100
dc.authorscopusid 7103003538
dc.authorwosid Ozturk, Abdullah/JHU-4760-2023
dc.authorwosid Park, Jongee/N-9579-2015
dc.authorwosid Ozturk, Abdullah/ABA-3208-2020
dc.authorwosid Chen, Xiaofang/ABB-1632-2020
dc.contributor.author Gundogmus, Pelin
dc.contributor.author Park, Jongee
dc.contributor.author Ozturk, Abdullah
dc.contributor.other Metallurgical and Materials Engineering
dc.date.accessioned 2024-07-05T15:39:24Z
dc.date.available 2024-07-05T15:39:24Z
dc.date.issued 2020
dc.department Atılım University en_US
dc.department-temp [Gundogmus, Pelin; Ozturk, Abdullah] Middle East Tech Univ, Met & Mat Engn Dept, Ankara, Turkey; [Park, Jongee] ATILIM Univ, Met & Mat Engn Dept, Ankara, Turkey en_US
dc.description Ozturk, Abdullah/0000-0002-1525-1561; Park, Jongee/0000-0003-1415-6906; Ozturk, Abdullah/0000-0002-1525-1561; en_US
dc.description.abstract The solar light sensitive g-C3N4/TiO2 heterojunction photocatalysts containing 20, 50, 80, and 90 wt% graphitic carbon nitride (g-C3N4) were prepared by growing Titania (TiO2) nanoparticles on the surfaces of g-C3N4 particles via one step hydrothermal process. The hydrothermal reactions were allowed to take place at 110 degrees C at autogenous pressure for 1 h. Raman spectroscopy analyses confirmed that an interface developed between the surfaces of TiO2 and g-C3N4 nanoparticles. The photocatalyst containing 80 wt% g-C3N4 was subsequently heat treated 1 h at temperatures between 350 and 500 degrees C to improve the photocatalytic efficiency. Structural and optical properties of the prepared g-C3N4/TiO2 heterojunction nanocomposites were compared with those of the pristine TiO2 and pristine g-C(3)N(4 )powders. Photocatalytic activity of all the nanocomposites and the pristine TiO2 andg-C3N4 powders were assessed by the Methylene Blue (MB) degradation test under solar light illumination. g-C3N4/TiO2 heterojunction photocatalysts exhibited better photocatalytic activity for the degradation of MB than both pristine TiO2 and g-C3N4. The photocatalytic efficiency of the g-C3N4/TiO2 heterojunction photocatalyst heat treated at 400 degrees C for 1 his 1.45 times better than that of the pristine TiO2 powder, 2.20 times better than that of the pristine g-C3N4 powder, and 1.24 times better than that of the commercially available TiO2 powder (Degussa P25). The improvement in photocatalytic efficiency was related to i) the generation of reactive oxidation species induced by photogenerated electrons, ii) the reduced recombination rate for electron-hole pairs, and iii) large specific surface area. en_US
dc.description.sponsorship Middle East Technical University (METU) [YLT-404-2018-3751] en_US
dc.description.sponsorship The authors thank Middle East Technical University (METU) for the partial financial support through project number YLT-404-2018-3751. The authors also thank to central laboratory at METU for performing BET and Raman measurements. en_US
dc.identifier.citationcount 29
dc.identifier.doi 10.1016/j.ceramint.2020.05.241
dc.identifier.endpage 21438 en_US
dc.identifier.issn 0272-8842
dc.identifier.issn 1873-3956
dc.identifier.issue 13 en_US
dc.identifier.scopus 2-s2.0-85086152269
dc.identifier.startpage 21431 en_US
dc.identifier.uri https://doi.org/10.1016/j.ceramint.2020.05.241
dc.identifier.uri https://hdl.handle.net/20.500.14411/3222
dc.identifier.volume 46 en_US
dc.identifier.wos WOS:000556283900094
dc.identifier.wosquality Q1
dc.institutionauthor Park, Jongee
dc.institutionauthor Gündoğmuş, Pelin
dc.language.iso en en_US
dc.publisher Elsevier Sci Ltd en_US
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı en_US
dc.rights info:eu-repo/semantics/closedAccess en_US
dc.scopus.citedbyCount 44
dc.subject TiO2 en_US
dc.subject g-C3N4 en_US
dc.subject Composite en_US
dc.subject Photocatalytic activity en_US
dc.subject Solar light en_US
dc.title Preparation and Photocatalytic Activity of G-c<sub>3</Sub>n<sub>4< Heterojunctions Under Solar Light Illumination en_US
dc.type Article en_US
dc.wos.citedbyCount 33
dspace.entity.type Publication
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