Visible light photoelectrochemical sulfide sensor based the use of TiO2 nanotube arrays loaded with Cu^sub 2^O
This work describes a photoelectrochemical for sensing sulfide method that is based on TiO2 nanotubes loaded with Cu2O particles (Cu2O/TiNTs). The narrow band gap of Cu2O and the heterostructure at the interface between Cu2O and TiO2 in the Cu2O/TiNTs significantly enhance visible light absorption a...
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| Veröffentlicht in: | Mikrochimica acta (1966) 2017-10, Vol.184 (10), p.4065 |
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| container_title | Mikrochimica acta (1966) |
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| creator | Su, Yongzhao Yang, Siyuan Liu, Weipeng Qiao, Long Yan, Jie Liu, Yingju Zhang, Shengsen Fang, Yueping |
| description | This work describes a photoelectrochemical for sensing sulfide method that is based on TiO2 nanotubes loaded with Cu2O particles (Cu2O/TiNTs). The narrow band gap of Cu2O and the heterostructure at the interface between Cu2O and TiO2 in the Cu2O/TiNTs significantly enhance visible light absorption and charge separation, and these results in an improved photocurrent of the Cu2O/TiNT electrode under irradiation with visible light (> 400 nm). In the presence of sulfide, Cu7S4 is formed on the surface of the Cu2O/TiNT, this leading to a decrease in the photocurrent on the electrode. At a potential of 0.0 V, the photocurrent of the Cu2O/TiNTs before and after immersing it into 300 μM sulfide solution is 1086 and 310 μA cm−2, respectively. The findings were used to design a photoelectrochemical sulfide sensor. Under optimum conditions and at a pH value of 7.0, the change in photocurrent varies linearly in the 1 to 300 μM sulfide concentration range with a 0.6 μM detection limit. The sensor was applied to the determination of sulfide in spiked real water samples. [Figure not available: see fulltext.] |
| doi_str_mv | 10.1007/s00604-017-2441-7 |
| format | Article |
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The narrow band gap of Cu2O and the heterostructure at the interface between Cu2O and TiO2 in the Cu2O/TiNTs significantly enhance visible light absorption and charge separation, and these results in an improved photocurrent of the Cu2O/TiNT electrode under irradiation with visible light (> 400 nm). In the presence of sulfide, Cu7S4 is formed on the surface of the Cu2O/TiNT, this leading to a decrease in the photocurrent on the electrode. At a potential of 0.0 V, the photocurrent of the Cu2O/TiNTs before and after immersing it into 300 μM sulfide solution is 1086 and 310 μA cm−2, respectively. The findings were used to design a photoelectrochemical sulfide sensor. Under optimum conditions and at a pH value of 7.0, the change in photocurrent varies linearly in the 1 to 300 μM sulfide concentration range with a 0.6 μM detection limit. The sensor was applied to the determination of sulfide in spiked real water samples. 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[Figure not available: see fulltext.]</description><subject>Copper oxides</subject><subject>Electrodes</subject><subject>Electromagnetic absorption</subject><subject>Nanotubes</subject><subject>Photoelectric effect</subject><subject>Photoelectric emission</subject><subject>Sensor arrays</subject><subject>Sensors</subject><subject>Titanium dioxide</subject><subject>Titanium oxides</subject><issn>0026-3672</issn><issn>1436-5073</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqNyrtOwzAUgGELUYlweQC2IzEbji84dK5AbF0qxlZOctK4MnHxsYV4ezLwAEz_8H9C3Ct8VIjtEyM6tBJVK7W1SrYXolHWOPmMrbkUDaJ20rhWX4lr5hMu0GnbiPkjcOgiQQzHqcB5SiVRpL7k1E_0GXofgWscw0DANHPK0HmmAcpEUJkgjbALWw2zn1OpHYHP2f8wxOSHhX2HMsGm7rl2oPfbW7EafWS6--uNeHh73W3e5Tmnr0pcDqdU87ysg1qbF7PWzmrzP_ULmxlQRQ</recordid><startdate>20171001</startdate><enddate>20171001</enddate><creator>Su, Yongzhao</creator><creator>Yang, Siyuan</creator><creator>Liu, Weipeng</creator><creator>Qiao, Long</creator><creator>Yan, Jie</creator><creator>Liu, Yingju</creator><creator>Zhang, Shengsen</creator><creator>Fang, Yueping</creator><general>Springer Nature B.V</general><scope>3V.</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8FE</scope><scope>8FG</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>M0S</scope><scope>M1P</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope></search><sort><creationdate>20171001</creationdate><title>Visible light photoelectrochemical sulfide sensor based the use of TiO2 nanotube arrays loaded with Cu^sub 2^O</title><author>Su, Yongzhao ; 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The narrow band gap of Cu2O and the heterostructure at the interface between Cu2O and TiO2 in the Cu2O/TiNTs significantly enhance visible light absorption and charge separation, and these results in an improved photocurrent of the Cu2O/TiNT electrode under irradiation with visible light (> 400 nm). In the presence of sulfide, Cu7S4 is formed on the surface of the Cu2O/TiNT, this leading to a decrease in the photocurrent on the electrode. At a potential of 0.0 V, the photocurrent of the Cu2O/TiNTs before and after immersing it into 300 μM sulfide solution is 1086 and 310 μA cm−2, respectively. The findings were used to design a photoelectrochemical sulfide sensor. Under optimum conditions and at a pH value of 7.0, the change in photocurrent varies linearly in the 1 to 300 μM sulfide concentration range with a 0.6 μM detection limit. The sensor was applied to the determination of sulfide in spiked real water samples. 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| subjects | Copper oxides Electrodes Electromagnetic absorption Nanotubes Photoelectric effect Photoelectric emission Sensor arrays Sensors Titanium dioxide Titanium oxides |
| title | Visible light photoelectrochemical sulfide sensor based the use of TiO2 nanotube arrays loaded with Cu^sub 2^O |
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