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He Y, Zhong D, Xu Y, Jiang R, Zhang J, Liao P. Preparation of Ti/SnO 2-Sb 2O 4-La Electrode with TiO 2 Nanotubes Intermediate Layer and the Electrochemical Oxidation Performance of Rhodamine B. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7569-7580. [PMID: 38544311 DOI: 10.1021/acs.langmuir.4c00177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
A La-doped Ti/SnO2-Sb2O4 electrode with TiO2-NTs intermediate layer (Ti/TiO2-NTs/SnO2-Sb2O4-La) was created via the electrodeposition technique. The physicochemical and electrochemical properties of the electrode were analyzed through FESEM, XRD, XPS, CV, and LSV electrochemical tests. The results showed that TiO2-NTs were tightly packed on the surface of Ti substrate, thus improving the binding force of the SnO2-Sb2O4-La coating, offering greater specific surface area, more active spots, higher current response, and longer lifespan for the degradation of rhodamine B. The lifespan of the Ti/TiO2-NTs/SnO2-Sb2O4-La electrode reached 200 min (1000 mA cm-2, 1 M H2SO4), while the actual service life was up to 3699 h. Under the conditions of initial pH 3.0, Na2SO4 concentration of 0.1 M, current density of 30 mA cm-2, and initial rhodamine B concentration of 20 mg L-1, the color and TOC removal rate of rhodamine B reached 100% and 86.13% within 15 and 30 min, respectively. Rhodamine B was decomposed into acids, esters, and other molecular compounds under the action of •OH and SO4•- free radicals and electrocatalysis, and finally completely mineralized into CO2 and H2O. It is anticipated that this work will yield a novel research concept for producing DSA electrodes with superior catalytic efficacy and elevated stability.
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Affiliation(s)
- Yuanzhen He
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Dengjie Zhong
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Yunlan Xu
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Ran Jiang
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Jiayou Zhang
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Pengfei Liao
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
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Song Z, Xu Y, Wu H, Huang J, Zhang Y. Superior photo-Fenton degradation of acetamiprid by α- Fe 2O 3-pillared bentonite/L-cysteine complex: Synergy of L-cysteine and visible light. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118523. [PMID: 37393869 DOI: 10.1016/j.jenvman.2023.118523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/16/2023] [Accepted: 06/24/2023] [Indexed: 07/04/2023]
Abstract
Acetamiprid is a potential threat to human health, aquatic life, soil microorganisms and beneficial insects as a recalcitrant pollutant in wastewater treatment plant effluents. In this work, the synthesized α-Fe2O3-pillared bentonite (FPB) was used to degrade acetamiprid in the photo-Fenton process with the assistance of L-cysteine (L-cys) existing in natural aquatic environment. The kinetic constant k of acetamiprid degradation by FPB/L-cys in the photo-Fenton process was far more than that in the Fenton process of FPB/L-cys lacking light and the photo-Fenton process of FPB without L-cys. The positive linear correlation between k and ≡Fe(II) content indicated the synergy of L-cys and visible light accelerated the cycle of Fe(III) to Fe(II) in FPB/L-cys during the degradation of acetamiprid by elevating the visible light response of FPB, and promoting the interfacial electron transfer from the active sites of FPB to hydrogen peroxide and photo-generated electron transfer from conduction band of α-Fe2O3 to the active sites of FPB. The boosting •OH and 1O2 were predominantly responsible for acetamiprid degradation. Acetamiprid could be efficiently degraded into less toxic small molecules in the photo-Fenton process via C-N bond breaking, hydroxylation, demethylation, ketonization, dechlorination, and ring cleavage.
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Affiliation(s)
- Zhelin Song
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Yu Xu
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Honghai Wu
- School of Environment, South China Normal University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, South China Normal University, Guangzhou, 510006, China
| | - Jiahui Huang
- School of Environment, South China Normal University, Guangzhou, 510006, China
| | - Yanlin Zhang
- School of Environment, South China Normal University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & Key Laboratory of Theoretical Chemistry of Environment Ministry of Education, South China Normal University, Guangzhou, 510006, China.
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Kumari P, Bahadur N, Conlan XA, Laleh M, Kong L, O'Dell LA, Dumée LF, Merenda A. Atomically-thin Schottky-like photo-electrocatalytic cross-flow membrane reactors for ultrafast remediation of persistent organic pollutants. WATER RESEARCH 2022; 218:118519. [PMID: 35512533 DOI: 10.1016/j.watres.2022.118519] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/18/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
The remediation of persistent organic pollutants in surface and ground water represents a major environmental challenge worldwide. Conventional physico-chemical techniques do not efficiently remove such persistent organic pollutants and new remediation techniques are therefore required. Photo-electro catalytic membranes represent an emerging solution that can combine photocatalytic and electrocatalytic degradation of contaminants along with molecular sieving. Herein, macro-porous photo-electro catalytic membranes were prepared using conductive and porous stainless steel metal membranes decorated with nano coatings of semiconductor photocatalytic metal oxides (TiO2 and ZnO) via atomic layer deposition, producing highly conformal and stable coatings. The metal - semiconductor junction between the stainless steel membranes and photocatalysts provides Schottky - like characteristics to the coated membranes. The PEC membranes showed induced hydrophilicity from the nano-coatings and enhanced electro-chemical properties due to the Schottky junction. A high electron transfer rate was also induced in the coated membranes as the photocurrent efficiency increased by 4 times. The photo-electrocatalytic efficiency of the TiO2 and ZnO coated membranes were demonstrated in batch and cross flow filtration reactors for the degradation of persistent organic pollutant solution, offering increased degradation kinetic factors by 2.9 and 2.3 compared to photocatalysis and electrocatalysis, respectively. The recombination of photo-induced electron and hole pairs is mitigated during the photo-electrocatalytic process, resulting in an enhanced catalytic performance. The strategy offers outstanding perspectives to design stimuli-responsive membrane materials able to sieve and degrade simultaneously toxic contaminants towards greater process integration and self-cleaning operations.
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Affiliation(s)
- Priyanka Kumari
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia; TERI-Deakin Nano-Biotechnology Center (TDNBC), TERI Gram, Gwalpahari, Gurugram, Haryana 122003, India.
| | - Nupur Bahadur
- TADOX® Technology Centre for Water Reuse, Water Resources Division, The Energy and Resources Institute (TERI), India Habitat Centre, Lodhi Road, New Delhi 110003, India.
| | - Xavier A Conlan
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC 3216, Australia
| | - Majid Laleh
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia
| | - Lingxue Kong
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia
| | - Luke A O'Dell
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Geelong, VIC 3216, Australia
| | - Ludovic F Dumée
- Department of Chemical Engineering, Khalifa University, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO2 and Hydrogen, Khalifa University, Abu Dhabi, United Arab Emirates; Center for Membrane and Advanced Water Technology, Khalifa University, Abu Dhabi, United Arab Emirates.
| | - Andrea Merenda
- School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC, Australia
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Electrochemical oxidation of acetamiprid using Yb-doped PbO2 electrodes: Electrode characterization, influencing factors and degradation pathways. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.10.021] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Removal of p-chloroaniline from polluted waters using a cathodic electrochemical ceramic membrane reactor. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.10.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Comprehensive solution for acetamiprid degradation: Combined electro-Fenton and adsorption process. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.05.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Lee CH, Lee ES, Lim YK, Park KH, Park HD, Lim DS. Enhanced electrochemical oxidation of phenol by boron-doped diamond nanowire electrode. RSC Adv 2017. [DOI: 10.1039/c6ra26287b] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We fabricated a boron-doped diamond nanowire (BDDNW) electrode via metal-assisted chemical etching (MACE) of Si and electrostatic self-assembly of nanodiamond (ESAND) seeding to provide a large surface area during the phenol oxidation.
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Affiliation(s)
- Choong-Hyun Lee
- Department of Materials Science and Engineering
- Korea University
- Seoul 02841
- Republic of Korea
| | - Eung-Seok Lee
- Department of Materials Science and Engineering
- Korea University
- Seoul 02841
- Republic of Korea
| | - Young-Kyun Lim
- Department of Materials Science and Engineering
- Korea University
- Seoul 02841
- Republic of Korea
| | - Kang-Hee Park
- School of Civil, Environmental and Architectural Engineering
- Korea University
- Seoul 02841
- Republic of Korea
| | - Hee-Deung Park
- School of Civil, Environmental and Architectural Engineering
- Korea University
- Seoul 02841
- Republic of Korea
| | - Dae-Soon Lim
- Department of Materials Science and Engineering
- Korea University
- Seoul 02841
- Republic of Korea
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Maleki A, Zand P, Mohseni Z. Fe3O4@PEG-SO3H rod-like morphology along with the spherical nanoparticles: novel green nanocomposite design, preparation, characterization and catalytic application. RSC Adv 2016. [DOI: 10.1039/c6ra24029a] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new heterogeneous nanocatalyst was successfully synthesized, completely characterized and efficiently applied in the synthesis of dihydropyrimidines.
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Affiliation(s)
- Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Pedram Zand
- Catalysts and Organic Synthesis Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - Zahra Mohseni
- Catalysts and Organic Synthesis Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
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