PMID- 37360499
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230701
IS  - 2470-1343 (Electronic)
IS  - 2470-1343 (Linking)
VI  - 8
IP  - 24
DP  - 2023 Jun 20
TI  - Defective TiO(2) Nanotube Arrays for Efficient Photoelectrochemical Degradation 
      of Organic Pollutants.
PG  - 21605-21617
LID - 10.1021/acsomega.3c00820 [doi]
AB  - Oxygen vacancies (OVs) are one of the most critical factors that enhance the 
      electrical and catalytic characteristics of metal oxide-based photoelectrodes. 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 photoelectrochemical (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.
CI  - (c) 2023 The Authors. Published by American Chemical Society.
FAU - Machreki, Manel
AU  - Machreki M
AD  - Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270 
      Ajdovscina, Slovenia.
FAU - Chouki, Takwa
AU  - Chouki T
AUID- ORCID: 0000-0003-2293-0260
AD  - Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270 
      Ajdovscina, Slovenia.
FAU - Tyuliev, Georgi
AU  - Tyuliev G
AD  - Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev St., 
      Bldg. 11, Sofia 1113, Bulgaria.
FAU - Zigon, Dusan
AU  - Zigon D
AD  - Institute "Jozef Stefan", Jamova 39, 1000 Ljubljana, Slovenia.
FAU - Ohtani, Bunsho
AU  - Ohtani B
AD  - Catalysis Research Center, Hokkaido University, N21, W10, 001-0021 Sapporo, 
      Japan.
FAU - Loukanov, Alexandre
AU  - Loukanov A
AD  - Department of Chemistry and Materials Science, National Institute of Technology, 
      Gunma College, 580 Toriba, Maebashi 371-8530, Gunma, Japan.
FAU - Stefanov, Plamen
AU  - Stefanov P
AD  - Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 
      Sofia 1113, Bulgaria.
FAU - Emin, Saim
AU  - Emin S
AUID- ORCID: 0000-0003-1918-3997
AD  - Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, 5270 
      Ajdovscina, Slovenia.
LA  - eng
PT  - Journal Article
DEP - 20230607
PL  - United States
TA  - ACS Omega
JT  - ACS omega
JID - 101691658
PMC - PMC10286085
COIS- The authors declare no competing financial interest.
EDAT- 2023/06/26 19:07
MHDA- 2023/06/26 19:08
PMCR- 2023/06/07
CRDT- 2023/06/26 12:37
PHST- 2023/02/08 00:00 [received]
PHST- 2023/05/24 00:00 [accepted]
PHST- 2023/06/26 19:08 [medline]
PHST- 2023/06/26 19:07 [pubmed]
PHST- 2023/06/26 12:37 [entrez]
PHST- 2023/06/07 00:00 [pmc-release]
AID - 10.1021/acsomega.3c00820 [doi]
PST - epublish
SO  - ACS Omega. 2023 Jun 7;8(24):21605-21617. doi: 10.1021/acsomega.3c00820. 
      eCollection 2023 Jun 20.