Plasma Enhanced Wet Chemical Surface Activation of Ti[O.sub.2] for the Synthesis of High Performance Photocatalytic Au/Ti[O.sub.2] Nanocomposites
To enhance the effectiveness of Ti[O.sub.2] as a photocatalyst, it was believed that the drawbacks of the large bandgap and the rapid electron-hole recombination can be overcome by coupling Ti[O.sub.2] with plasmonic metal nanoparticles. The incorporation of the nanoparticles onto the Ti[O.sub.2] su...
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| Veröffentlicht in: | Applied sciences 2020-05, Vol.10 (10) |
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| creator | Thuy, Nguyen Thi Thu Tung, Do Hoang Manh, Le Hong Kim, Joon Heon Kudryashov, Sergey Ivanovich Minh, Pham Hong Hien, Nguyen The |
| description | To enhance the effectiveness of Ti[O.sub.2] as a photocatalyst, it was believed that the drawbacks of the large bandgap and the rapid electron-hole recombination can be overcome by coupling Ti[O.sub.2] with plasmonic metal nanoparticles. The incorporation of the nanoparticles onto the Ti[O.sub.2] surface requires a suitable procedure to achieve the proper particle adhesion. In this work, we propose a simple, clean, and effective surface activation of Ti[O.sub.2] using plasma enhanced wet chemical surface treatment. Under only 5 min of plasma treatment in a 3% N[H.sub.3]/3% [H.sub.2][O.sub.2] solution, gold nanoparticles were found better adhered onto the Ti[O.sub.2] surface. Hence, the methylene blue degradation rate of the Au/Ti[O.sub.2] under sunlight treated was improved by a factor of 3.25 times in comparison to non-treated Au/Ti[O.sub.2] and by 13 times in comparison to the bare rutile Ti[O.sub.2]. Keywords: plasma-liquid interaction; sunlight degradation; Au/Ti[O.sub.2] nanocomposite; surface treatment; noble metal based photocatalyst |
| doi_str_mv | 10.3390/app10103345 |
| format | Article |
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The incorporation of the nanoparticles onto the Ti[O.sub.2] surface requires a suitable procedure to achieve the proper particle adhesion. In this work, we propose a simple, clean, and effective surface activation of Ti[O.sub.2] using plasma enhanced wet chemical surface treatment. Under only 5 min of plasma treatment in a 3% N[H.sub.3]/3% [H.sub.2][O.sub.2] solution, gold nanoparticles were found better adhered onto the Ti[O.sub.2] surface. Hence, the methylene blue degradation rate of the Au/Ti[O.sub.2] under sunlight treated was improved by a factor of 3.25 times in comparison to non-treated Au/Ti[O.sub.2] and by 13 times in comparison to the bare rutile Ti[O.sub.2]. 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The incorporation of the nanoparticles onto the Ti[O.sub.2] surface requires a suitable procedure to achieve the proper particle adhesion. In this work, we propose a simple, clean, and effective surface activation of Ti[O.sub.2] using plasma enhanced wet chemical surface treatment. Under only 5 min of plasma treatment in a 3% N[H.sub.3]/3% [H.sub.2][O.sub.2] solution, gold nanoparticles were found better adhered onto the Ti[O.sub.2] surface. Hence, the methylene blue degradation rate of the Au/Ti[O.sub.2] under sunlight treated was improved by a factor of 3.25 times in comparison to non-treated Au/Ti[O.sub.2] and by 13 times in comparison to the bare rutile Ti[O.sub.2]. 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| identifier | ISSN: 2076-3417 |
| ispartof | Applied sciences, 2020-05, Vol.10 (10) |
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| language | eng |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; MDPI - Multidisciplinary Digital Publishing Institute |
| subjects | Chemical properties Chemical synthesis Composite materials Methods Nanoparticles Optical properties Production processes Titanium dioxide |
| title | Plasma Enhanced Wet Chemical Surface Activation of Ti[O.sub.2] for the Synthesis of High Performance Photocatalytic Au/Ti[O.sub.2] Nanocomposites |
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