1. Defective TiO2 Nanotube Arrays for Efficient PhotoelectrochemicalDegradation of Organic PollutantsManel Machreki, Takwa Chouki, Georgi Tyuliev, Dušan Žigon, Bunsho Ohtani, Alexandre Loukanov, Plamen Stefanov, Saim Emin, 2023, original scientific article Abstract: Oxygen vacancies (OVs) are one of the most critical factors that enhance the electrical and catalytic characteristics of metal oxide-based photo-electrodes. In this work, a simple procedure was applied to prepare reduced TiO 2 nanotube arrays (NTAs) (TiO 2−x) via a one-step reduction method using NaBH 4. A series of characterization techniques were used to study the structural, optical, and electronic properties of TiO 2−x NTAs. X-ray photoelectron spectroscopy confirmed the presence of defects in TiO 2−x NTAs. Photoacoustic measurements were used to estimate the electron-trap density in the NTAs. Photoelectrochemical studies show that the photocurrent density of TiO 2−x NTAs was nearly 3 times higher than that of pristine TiO 2. It was found that increasing OVs in TiO 2 affects the surface recombination centers, enhances electrical conductivity, and improves charge transport. For the first time, a TiO 2−x photoanode was used in the photo-electrochemical (PEC) degradation of a textile dye (basic blue 41, B41) and ibuprofen (IBF) pharmaceutical using in situ generated reactive chlorine species (RCS). Liquid chromatography coupled with mass spectrometry was used to study the mechanisms for the degradation of B41 and IBF. Phytotoxicity tests of B41 and IBF solutions were performed using Lepidium sativum L. to evaluate the potential acute toxicity before and after the PEC treatment. The present work provides efficient PEC degradation of the B41 dye and IBF in the presence of RCS without generating harmful products.
Keywords: TiO2 Nanotube Arrays, PhotoelectrochemicalDegradation of Organic Pollutants
Published in RUNG: 12.06.2023; Views: 360; Downloads: 3
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2. Reduced TiO2 nanotube arrays for photoelectrochemical degradation of pharmaceuticalManel Machreki, Takwa Chouki, Georgi Tyuliev, Dušan Žigon, Bunsho Ohtani, Alexandre Loukanov, Plamen Stefanov, Saim Emin, 2022, published scientific conference contribution abstract Keywords: TiO2, nanotube arrays, photoelectrochemical degradation, pharmaceuticals
Published in RUNG: 10.02.2023; Views: 475; Downloads: 0
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3. ASTRI for the Cherenkov Telescope ArrayMaria Concetta Maccarone, Christopher Eckner, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2017, published scientific conference contribution Keywords: ASTRI, CTA, SST arrays
Published in RUNG: 16.02.2018; Views: 2571; Downloads: 136
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4. Stellar Intensity Interferometric Capabilities of IACT ArraysDave Kieda, Christopher Eckner, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2017, published scientific conference contribution Keywords: IACT Arrays, CTA, stellar Intensity
Published in RUNG: 16.02.2018; Views: 2935; Downloads: 133
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5. Growth of ZnO Nanorod Arrays on Flexible Substrates: Effect of Precursor Solution ConcentrationFei Tong, Kyusang Kim, Yaqi Wang, Resham Thapa, Yogesh Sharma, Aaron Modic, Ayayi Ahyi, Tamara Issacs-Smith, John Williams, Hosang Ahn, Hyejin Park, Dong-Joo Kim, Sungkoo Lee, Eunhee Lim, Kyeong K. Lee, Minseo Park, 2012, original scientific article Keywords: ZnO Nanorod Arrays, ITO-PET, solution growth
Published in RUNG: 16.01.2017; Views: 4132; Downloads: 0
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