Preparation of Ti/SnO 2 -Sb/La-βPbO 2 electrode and its application in the degradation of some pollutants including prednisolone and 8-Hydroxyquinoline.

التفاصيل البيبلوغرافية
العنوان:	Preparation of Ti/SnO 2 -Sb/La-βPbO 2 electrode and its application in the degradation of some pollutants including prednisolone and 8-Hydroxyquinoline.
المؤلفون:	Nguyen Tien H; The University of Da Nang, University of Science and Education, 459 Ton Duc Thang st., Lien Chieu, Da Nang, 550000, Viet Nam; The University of Da Nang, Environmental Protection and Research Center, 54 Nguyen Luong Bang st., Da Nang, 550000, Viet Nam. Electronic address: nthoang@ued.udn.vn., Mwazighe FM; Department of Chemistry, Faculty of Science and Technology, University of Nairobi, P. O. Box 30197, 00100, Nairobi, Kenya.
المصدر:	Chemosphere [Chemosphere] 2023 Aug; Vol. 333, pp. 138933. Date of Electronic Publication: 2023 May 13.
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:	Oxyquinoline* , Water Pollutants, Chemical*, Titanium ; Tin Compounds ; Oxidation-Reduction ; Electrodes
مستخلص:	In this work, a novel La-doped βPbO 2 (Ti/SnO 2 -Sb/La-βPbO 2 ) was prepared using electrodeposition method and applied to the degradation of prednisolone (PRD), 8-Hydroxyquinoline (8-HQ), and other typical organic pollutants. Compared with the conventional electrode Ti/SnO 2 -Sb/βPbO 2 , La 2 O 3 doping enhanced oxygen evolution potential (OEP), reactive surface area, stability and repeatability of the electrode. The 10 g L ^-1 of La 2 O 3 doping exhibited the highest electrochemical oxidation capability of the electrode with [•OH]ss being determined at 5.6 × 10 ^-13 M. The quenching experiments were conducted to confirm the main oxidizing species (here: •OH) in the electrochemical process. The study showed that the pollutants were removed in the electrochemical (EC) process with different degradation rates and indicated that the second-order rate constant of organic pollutants towards •OH (k OP,•OH ) has a linear relationship with the degradation rate of organic pollutants (k OP ) in the electrochemical process. Another new finding in this work is that a regression line of k OP,•OH and k OP can be used to estimate k OP,•OH of an organic chemical, which cannot be determined using the competition method. k PRD,•OH and k 8-HQ,•OH were determined to be 7.4 × 10 ⁹ M ^-1 s ^-1 and (4.6-5.5) × 10 ⁹ M ^-1 s ^-1 , respectively. Compared with conventional supporting electrolyte (like SO 4 ^2- ), H 2 PO 4 ^- and HPO 4 ^2- improved k PRD and k 8-HQ by 1.3-1.6-fold, while SO 3 ^2- and HCO 3 ^- inhibited k PRD and k 8-HQ significantly, down to 80%. Additionally, the degradation pathway of 8-HQ was proposed based on the detection of intermediates from GC-MS. Competing Interests: Declaration of competing interest We wish to confirm that there are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome. We confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed. We further confirm that the order of authors listed in the manuscript has been approved by all of us. We confirm that we have given due consideration to the protection of intellectual property associated with this work and that there are no impediments to publication, including the timing of publication, with respect to intellectual property. In so doing we confirm that we have followed the regulations of our institutions concerning intellectual property. We understand that the Corresponding Author is the sole contact for the editorial process (including the Editorial Manager and direct communications with the office). He is responsible for communicating with the other authors about progress, submission of revisions and final approval of proofs. We confirm that we have provided a current, correct email address which is accessible to the Corresponding Author. (Copyright © 2023 Elsevier Ltd. All rights reserved.)
فهرسة مساهمة:	Keywords: Degradation rate; Electrochemical degradation; Kinetic degradation; Organic; Ti/SnO(2)–Sb/La-βPbO(2) electrode
المشرفين على المادة:	4QI5EL790W (lanthanum oxide) 5UTX5635HP (Oxyquinoline) D1JT611TNE (Titanium) 0 (Water Pollutants, Chemical) 0 (Tin Compounds)
تواريخ الأحداث:	Date Created: 20230515 Date Completed: 20230605 Latest Revision: 20230605
رمز التحديث:	20230605
DOI:	10.1016/j.chemosphere.2023.138933
PMID:	37187380
قاعدة البيانات:	MEDLINE

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