Sulfur-Doped g-C3N4 with Enhanced Visible-Light Photocatalytic Activity
The S-doped g-C3N4 materials were prepared by heating mixtures of urea and thiourea with various weight ratios at 550 °C, and denoted as x:y SCN, where x:y is weight ratios of urea to thiourea. The obtained samples were characterized by X-ray diffraction, diffuse reflectance ultraviolet-visible spec...
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| Veröffentlicht in: | Applied Mechanics and Materials 2019-03, Vol.889, p.43-50 |
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| creator | An, Tran Doan Hung, Nguyen Phi Tri, Nguyen Ngoc Phu, Huynh Thi Phuc, Nguyen Van VO, Vien |
| description | The S-doped g-C3N4 materials were prepared by heating mixtures of urea and thiourea with various weight ratios at 550 °C, and denoted as x:y SCN, where x:y is weight ratios of urea to thiourea. The obtained samples were characterized by X-ray diffraction, diffuse reflectance ultraviolet-visible spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric differential thermal analysis, scanning electron microscopy and infrared spectra. The results showed that all the x:y SCN materials exhibit the presence of doping S in the structure of g-C3N4 and higher capability in the photodegradation of Rhodamin B in aqueous solution under visible light condition than pure g-C3N4. Among the SCN samples, 75:25 SCN performed the highest photocatalytic activity, which is believed the presence of the largest amount of doping S in the matrix of g-C3N4, leading to reduction of their bandgap. The reduction of bandgap for S-doped g-C3N4 materials compared to pure g-C3N4 was proved by theoretical calculation. |
| doi_str_mv | 10.4028/www.scientific.net/AMM.889.43 |
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The obtained samples were characterized by X-ray diffraction, diffuse reflectance ultraviolet-visible spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric differential thermal analysis, scanning electron microscopy and infrared spectra. The results showed that all the x:y SCN materials exhibit the presence of doping S in the structure of g-C3N4 and higher capability in the photodegradation of Rhodamin B in aqueous solution under visible light condition than pure g-C3N4. Among the SCN samples, 75:25 SCN performed the highest photocatalytic activity, which is believed the presence of the largest amount of doping S in the matrix of g-C3N4, leading to reduction of their bandgap. The reduction of bandgap for S-doped g-C3N4 materials compared to pure g-C3N4 was proved by theoretical calculation.</description><identifier>ISSN: 1660-9336</identifier><identifier>ISSN: 1662-7482</identifier><identifier>ISBN: 9783035713640</identifier><identifier>ISBN: 3035713642</identifier><identifier>EISSN: 1662-7482</identifier><identifier>DOI: 10.4028/www.scientific.net/AMM.889.43</identifier><language>eng</language><publisher>Zurich: Trans Tech Publications Ltd</publisher><subject>Aqueous solutions ; Carbon nitride ; Catalytic activity ; Differential thermal analysis ; Differential thermogravimetric analysis ; Doping ; Energy gap ; Infrared analysis ; Infrared spectra ; Photocatalysis ; Photodegradation ; Photoelectrons ; Reduction ; Reflectance ; Scanning electron microscopy ; Spectrum analysis ; Thioureas ; Ultraviolet reflection ; Ureas ; Weight ; X ray photoelectron spectroscopy ; X-ray diffraction</subject><ispartof>Applied Mechanics and Materials, 2019-03, Vol.889, p.43-50</ispartof><rights>2019 Trans Tech Publications Ltd</rights><rights>Copyright Trans Tech Publications Ltd. Mar 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1983-5922f5d57c9a96d7d9b851d5ee291f2f5da51b2d0a93fdf0c818e7a564b205883</citedby><cites>FETCH-LOGICAL-c1983-5922f5d57c9a96d7d9b851d5ee291f2f5da51b2d0a93fdf0c818e7a564b205883</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttps://www.scientific.net/Image/TitleCover/4714?width=600</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>An, Tran Doan</creatorcontrib><creatorcontrib>Hung, Nguyen Phi</creatorcontrib><creatorcontrib>Tri, Nguyen Ngoc</creatorcontrib><creatorcontrib>Phu, Huynh Thi</creatorcontrib><creatorcontrib>Phuc, Nguyen Van</creatorcontrib><creatorcontrib>VO, Vien</creatorcontrib><title>Sulfur-Doped g-C3N4 with Enhanced Visible-Light Photocatalytic Activity</title><title>Applied Mechanics and Materials</title><description>The S-doped g-C3N4 materials were prepared by heating mixtures of urea and thiourea with various weight ratios at 550 °C, and denoted as x:y SCN, where x:y is weight ratios of urea to thiourea. 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The obtained samples were characterized by X-ray diffraction, diffuse reflectance ultraviolet-visible spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric differential thermal analysis, scanning electron microscopy and infrared spectra. The results showed that all the x:y SCN materials exhibit the presence of doping S in the structure of g-C3N4 and higher capability in the photodegradation of Rhodamin B in aqueous solution under visible light condition than pure g-C3N4. Among the SCN samples, 75:25 SCN performed the highest photocatalytic activity, which is believed the presence of the largest amount of doping S in the matrix of g-C3N4, leading to reduction of their bandgap. The reduction of bandgap for S-doped g-C3N4 materials compared to pure g-C3N4 was proved by theoretical calculation.</abstract><cop>Zurich</cop><pub>Trans Tech Publications Ltd</pub><doi>10.4028/www.scientific.net/AMM.889.43</doi><tpages>8</tpages></addata></record> |
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| subjects | Aqueous solutions Carbon nitride Catalytic activity Differential thermal analysis Differential thermogravimetric analysis Doping Energy gap Infrared analysis Infrared spectra Photocatalysis Photodegradation Photoelectrons Reduction Reflectance Scanning electron microscopy Spectrum analysis Thioureas Ultraviolet reflection Ureas Weight X ray photoelectron spectroscopy X-ray diffraction |
| title | Sulfur-Doped g-C3N4 with Enhanced Visible-Light Photocatalytic Activity |
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