دورية أكاديمية
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Fabrication of Ag 3 PO 4 /N-doped TiO 2 nanotubes heterojunction photocatalysts for visible-light-driven photocatalysis.

التفاصيل البيبلوغرافية
العنوان: Fabrication of Ag 3 PO 4 /N-doped TiO 2 nanotubes heterojunction photocatalysts for visible-light-driven photocatalysis.
المؤلفون: Luan NH; Department of Environmental Science and Engineering, Tunghai University, Taichung, 407, Taiwan., Chang CF; Department of Environmental Science and Engineering, Tunghai University, Taichung, 407, Taiwan. Electronic address: cfchang@thu.edu.tw.
المصدر: Chemosphere [Chemosphere] 2024 Feb; Vol. 350, pp. 141022. Date of Electronic Publication: 2023 Dec 21.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Elsevier Science Ltd Country of Publication: England NLM ID: 0320657 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1298 (Electronic) Linking ISSN: 00456535 NLM ISO Abbreviation: Chemosphere Subsets: MEDLINE
أسماء مطبوعة: Publication: Oxford : Elsevier Science Ltd
Original Publication: Oxford, New York, : Pergamon Press.
مواضيع طبية MeSH: Titanium*/chemistry , Nanotubes*/chemistry, Light ; Catalysis ; Methylene Blue/chemistry ; Nitrogen/chemistry
مستخلص: As an environmentally friendly and energy-efficient technology, photocatalysis holds considerable potential for eliminating organic pollutants. In this study, novel visible-light-driven Ag 3 PO 4 -decorated nitrogen-doped TiO 2 nanotubes (Ag 3 PO 4 /N-TNTs) photocatalysts with advanced properties of heterostructures were successfully synthesized and used to degrade methylene blue (MB) dye. The fabrication of Ag 3 PO 4 /N-TNTs photocatalysts involved a two-step electrochemical anodization to obtain TiO 2 nanotubes (TNTs) and the wet impregnation of the amorphous tubular structure in NH 3 solution, followed by calcination in air to obtain crystallized nitrogen-doped TiO 2 nanotubes (N-TNTs). Finally, the decoration of the N-TNTs with Ag 3 PO 4 nanoparticles was conducted to enhance visible-light reactivity. Various heterojunction photocatalysts were obtained by changing the concentration of NH 3 (0.5-2.5 M) and the dosage of Ag 3 PO 4 (0.25-1.5 wt%) in the composites. Results of ultraviolet-visible (UV-Vis) absorption, photocurrent transient, and electrochemical impedance spectroscopy measurement revealed that Ag 3 PO 4 /N-TNTs possessed a significant response in the visible-light range and good photoelectronic properties. The superior photocatalytic activity of the Ag 3 PO 4 /N-TNTs catalyst was achieved under the optimal conditions of N-doping using 2-M NH 3 and Ag 3 PO 4 deposition at a dosage of 0.75 wt%. Based on the degradation efficiency (DE) of MB, the optimal Ag 3 PO 4 /N-TNTs exhibited rate constants of 4.5 and 2 times higher than those of the pristine TNTs and N-TNTs, respectively. The high stability of Ag 3 PO 4 /N-TNTs was confirmed through four cycles of reutilization, with a small decay of only 5.3% in the DE of MB dye for each run of photocatalysis. The scavenger tests of generated reactive oxygen species revealed that ·OH and ·O 2 - were the primary contributors to photocatalytic performance. The synthesized Ag 3 PO 4 /N-TNTs heterostructure photocatalysts were proven to possess efficient separation of photogenerated charge carriers, high reactivity, and stability in the visible-light region.
Competing Interests: Declaration of competing interest Hereby, the authors declare that we have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. We confirm that the manuscript has been read and approved by all named authors. The order of authors listed in the manuscript has been approved by all named authors.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
فهرسة مساهمة: Keywords: Ag(3)PO(4); Heterojunction; Methylene blue; N-Doping; Photocatalyst; TiO(2) nanotubes
المشرفين على المادة: D1JT611TNE (Titanium)
T42P99266K (Methylene Blue)
N762921K75 (Nitrogen)
تواريخ الأحداث: Date Created: 20231223 Date Completed: 20240129 Latest Revision: 20240129
رمز التحديث: 20240129
DOI: 10.1016/j.chemosphere.2023.141022
PMID: 38141677
قاعدة البيانات: MEDLINE
الوصف
تدمد:1879-1298
DOI:10.1016/j.chemosphere.2023.141022