1
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Berardi S, Benazzi E, Marchini E, Cristino V, Argazzi R, Boaretto R, Gobbato T, Rigodanza F, Cerullo G, Bozzini B, Bonchio M, Prato M, Berger T, Caramori S. Role of Intragap States in Sensitized Sb-Doped Tin Oxide Photoanodes for Solar Fuels Production. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27209-27223. [PMID: 38747220 DOI: 10.1021/acsami.3c18020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
In view of developing photoelectrosynthetic cells which are able to store solar energy in chemical bonds, water splitting is usually the reaction of choice when targeting hydrogen production. However, alternative approaches can be considered, aimed at substituting the anodic reaction of water oxidation with more commercially capitalizable oxidations. Among them, the production of bromine from bromide ions was investigated long back in the 1980s by Texas Instruments. Herein we present optimized perylene-diimide (PDI)-sensitized antimony-doped tin oxide (ATO) photoanodes enabling the photoinduced HBr splitting with >4 mA/cm2 photocurrent densities under 0.1 W/cm2 AM1.5G illumination and 91 ± 3% faradaic efficiencies for bromine production. These remarkable results, among the best currently reported for the photoelectrochemical Br- oxidation by dye sensitized photoanodes, are strongly related to the occupancy extent of ATO's intragap (IG) states, generated upon Sb-doping, as demonstrated by comparing their performances with PDI-sensitized analogues on both undoped SnO2- and TiO2-passivated ATO scaffolds by means of (spectro)electrochemistry and electrochemical impedance spectroscopy. The architecture of the ATO-PDI photoanodic assembly was further modified via the introduction of a molecular iridium-based water oxidation catalyst, thus proving the versatility of the proposed hybrid interfaces as photoanodic platforms for photoinduced oxidations in PEC devices.
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Affiliation(s)
- Serena Berardi
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Elisabetta Benazzi
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Edoardo Marchini
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Vito Cristino
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Roberto Argazzi
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
- ISOF-CNR, c/o Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Rita Boaretto
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Thomas Gobbato
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | | | - Giulio Cerullo
- Department of Physics, Politecnico di Milano, 20133 Milano, Italy
| | | | - Marcella Bonchio
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences, Center of Excellence for Nanostructured Materials, University of Trieste, 34127 Trieste, Italy
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia San Sebastián, Spain
| | - Thomas Berger
- Department of Chemistry and Physics of Materials, University of Salzburg, A-5020 Salzburg, Austria
| | - Stefano Caramori
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
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2
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He Y, Zhong D, Xu Y, Zhang J, Jiang R, Liao P. Preparation of La-doped Ti/SnO 2-Sb 2O 4 anode and its electrochemical oxidation performance of rhodamine B. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:21632-21645. [PMID: 38393556 DOI: 10.1007/s11356-024-32503-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 02/12/2024] [Indexed: 02/25/2024]
Abstract
In this paper, La-doped Ti/SnO2-Sb2O4 electrode was prepared by electrodeposition and used for electrochemical degradation of rhodamine B. The optimum preparation conditions of the electrode were optimized as deposition time of 15 min and calcination at 500 ℃ for 2 h. The water treatment conditions were selected as initial pH 3.0, electrolyte Na2SO4 concentration 0.1 M, current density 30 mA cm-2, and initial rhodamine B concentration 20 mg L-1; the color and TOC removal of RhB reached 99.78% and 82.41% within 30 min. The FESEM, XRD, XPS, CV, LSV, and EIS characterization studies demonstrated that Ti/SnO2-Sb2O4-1%La electrode had a dense structure and the highest oxygen evolution potential (2.14 V) and lowest charge transfer resistance (0.198 Ω cm-2), indicating that doped La has lower energy consumption. Moreover, La doping can expand the specific surface area, active site, performance of pollutant degradation, and service life of the electrode. Especially, the service life of Ti/SnO2-Sb2O4-1%La is increased by three times, and the maximum life span reaches 90 min (1000 mA cm-2, 1 M H2SO4). Free radical quenching experiments show that ·OH plays a major role in the degradation of RhB. The Ti/SnO2-Sb2O4-1%La electrode prepared in this paper and its results will provide data support and reference for the design of efficient electrocatalytic electrode.
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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
| | - Jiayou Zhang
- School of Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Ran Jiang
- 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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3
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Berenguer R, Fernández-Aguirre MG, Beaumont S, Huerta F, Morallón E. Anodic abatement of glyphosate on Pt-doped SnO 2-Sb electrodes promoted by pollutant-dopant electrocatalytic interactions. CHEMOSPHERE 2024; 346:140635. [PMID: 37939930 DOI: 10.1016/j.chemosphere.2023.140635] [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: 07/14/2023] [Revised: 11/05/2023] [Accepted: 11/05/2023] [Indexed: 11/10/2023]
Abstract
The development of non-expensive and efficient technologies for the elimination of Glyphosate (GLP) in water is of great interest for society today. Here we explore novel electrocatalytic effects to boost the anodic oxidation of GLP on Pt-doped (3-13met%) SnO2-Sb electrodes. The study reveals the formation of well disperse Pt nanophases in SnO2-Sb that electrocatalyze GLP elimination. Cyclic voltammetry and in-situ spectroelectrochemical FTIR analysis evidence carboxylate-mediated Pt-GLP electrocatalytic interactions to promote oxidation and mineralization of this herbicide. Interestingly, under electrolytic conditions Pt effects are proposed to synergistically cooperate with hydroxyl radicals in GLP oxidation. Furthermore, the formation of by-products has been followed by different techniques, and the studied electrodes are compared to commercial Si/BDD and Ti/Pt anodes and tested for a real GLP commercial product. Results show that, although BDD is the most effective anode, the SnO2-Sb electrode with a 13 met% Pt can mineralize GLP with lower energy consumption.
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Affiliation(s)
- Raúl Berenguer
- Instituto Universitario de Materiales and Departamento de Química Física. Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain.
| | - Maribel G Fernández-Aguirre
- Instituto Universitario de Materiales and Departamento de Química Física. Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain; Escuela Profesional de Química, Facultad de Ciencias, Universidad Nacional de Ingeniería, Av. Túpac Amaru, 210, Lima, Peru
| | - Samuel Beaumont
- Instituto Universitario de Materiales and Departamento de Química Física. Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain
| | - Francisco Huerta
- Departamento de Ingeniería Textil y Papelera, Universitat Politècnica de València, Pza Ferrándiz y Carbonell, E-03801 Alcoy, Alicante, Spain
| | - Emilia Morallón
- Instituto Universitario de Materiales and Departamento de Química Física. Universidad de Alicante, Apartado 99, E-03080, Alicante, Spain
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4
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Deng D, Li Y, Wu M, Song Y, Huang Q, Duan Y, Chang Y, Zhao Y, He C. Electrocatalytic Degradation of Rhodamine B on the Sb-Doped SnO 2/Ti Electrode in Alkaline Medium. ACS OMEGA 2023; 8:48480-48490. [PMID: 38144056 PMCID: PMC10734287 DOI: 10.1021/acsomega.3c08391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/16/2023] [Accepted: 11/22/2023] [Indexed: 12/26/2023]
Abstract
To realize efficient electrocatalytic degradation of organic compounds in alkaline wastewater, an Sb-doped SnO2/Ti electrode was fabricated and employed for the removal of Rhodamine B (RhB), and the electrocatalytic oxidation performance of this electrode was assessed in an alkaline medium. In an alkaline solution (pH 11), the complete fading of 50 mg·L-1 RhB could be achieved after 150 min of degradation, the removal efficiency of the chemical oxygen demand reached 56.1% at 300 min, and the degradation process of RhB followed the pseudo-first-order kinetic model very well. Under the attack of hydroxyl radicals, partial RhB was degraded to low-molecular-weight organic acids through N-demethylation and the destruction of the conjugated chromophore. Various techniques including scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and cycle voltammetry were used to examine the changes in the morphology and structure, as well as the activity of the Sb-doped SnO2/Ti electrode before and after use. The Sb-doped SnO2/Ti electrode could be reproduced in batches, and each electrode was reused up to eight times without a significant decrease in degradation ability; the leaching amount of antimony was significantly lower than the national emission standard. The electrocatalytic oxidation of the dye wastewater sample was also performed with the desired results, indicating that electrochemical oxidation is a very promising technology for the treatment of alkaline dye wastewater using a Sb-doped SnO2/Ti electrode.
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Affiliation(s)
- Dongli Deng
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
| | - Ying Li
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
| | - Mingzhu Wu
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
| | - Yang Song
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
| | - Qiongjian Huang
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
| | - Yiqin Duan
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
| | - Yu Chang
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
| | - Yangyang Zhao
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
| | - Chunling He
- Chemical Pollution Control
Chongqing Applied Technology Extension Center of Higher Vocational
Colleges, Chongqing Industry Polytechnic
College, Chongqing 401120, P.R. China
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5
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Shao C, Cao H, Duan L, Rao S, Wang D, Zhu W, Zhang L, Lv W. Electrochemical activation of peroxydisulfate by Ti/ATO electrode: Performance and mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Zhang Z, Wang Z, Sun Y, Jiang S, Shi L, Bi Q, Xue J. Preparation of a novel Ni/Sb co-doped Ti/SnO2 electrode with carbon nanotubes as growth template by electrodeposition in a deep eutectic solvent. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116225] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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7
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Zhang Y, Zhang C, Shao D, Xu H, Rao Y, Tan G, Yan W. Magnetically assembled electrodes based on Pt, RuO 2-IrO 2-TiO 2 and Sb-SnO 2 for electrochemical oxidation of wastewater featured by fluctuant Cl - concentration. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126803. [PMID: 34388927 DOI: 10.1016/j.jhazmat.2021.126803] [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: 05/04/2021] [Revised: 07/23/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Magnetically assembled electrode (MAE) flexibly attracts magnetic particles (auxiliary electrodes, AEs) on a main electrode (ME) by the magnetic force, where the role of ME is always ignored. In this study, Ti/Pt, Ti/RuO2-IrO2-TiO2 and Ti/Sb-SnO2 were selected as the ME for comparison in treating synthetic wastewater (acid red G or phenol) with variable Cl- content. The effects of ME type, loading amount of Fe3O4/Sb-SnO2 AEs, and Cl- concentration were investigated, followed by varied electrochemical characterizations. Results show that AEs played a vital role in electrode activity and selectivity, and MEs also exerted an unignorable influence on the performance of the MAEs. Among the three MEs, Ti/RuO2-IrO2-TiO2 has the best OER/CER ability, activating more extra active sites with same AEs loading amount, leading to higher organics degradation efficiency under chlorine-free condition. However, this MAE is featured by the noticeable accumulation of intermediate products under chlorine-free condition even if 0.3 g·cm-2 of AEs are loaded. All electrodes' performances were enhanced in the presence of Cl-. With high concentration chloride (0.5 M NaCl), the accumulation of intermediate products was reduced significantly, especially on Ti/RuO2-IrO2-TiO2 based MAE, and no chlorinated compound was identified. Finally, the structure-activity relationships of these MAEs were proposed.
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Affiliation(s)
- Yuanyuan Zhang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Cuiping Zhang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Dan Shao
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an 710021, China.
| | - Hao Xu
- Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Yongfang Rao
- Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Guoqiang Tan
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Wei Yan
- Department of Environmental Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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8
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Wang F, Mo Y, Sun L, Wang S, Cui S, Wang H, Li J. Performance deterioration of Sb-SnO2/C membrane anode treating phenolic wastewater and anode regeneration: Adsorption and physicochemical change of catalysts. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Zhang X, Lv S, Zhang X, Xiao K, Wu X. Improvement of the activity and SO 2 tolerance of Sb-modified Mn/PG catalysts for NH 3-SCR at a low temperature. J Environ Sci (China) 2021; 101:1-15. [PMID: 33334506 DOI: 10.1016/j.jes.2020.07.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 07/22/2020] [Accepted: 07/29/2020] [Indexed: 06/12/2023]
Abstract
A series of MnM/palygorskite (PG) (M = La, W, Mo, Sb, Mg) catalysts was prepared by the wetness co-impregnation method for low-temperature selective catalytic reduction (SCR) of NO with NH3. Conversion efficiency followed the order Sb > Mo > La > W > Mg. A combination of various physico-chemical techniques was used to investigate the influence of Sb-modified Mn/PG catalysts. MnSb0.156/PG catalyst showed highest NO conversion at low temperatures in the presence of SO2 which reveals that addition of Sb oxides effectively enhances the SCR activity of catalysts. A SO2 step-wise study showed that MnSb0.156/PG catalyst displays higher durable resistance to SO2 than Mn/PG catalyst, where the sulfating of active phase is greatly inhibited after Sb doping. Scanning electron microscopy and X-ray diffraction results showed that Sb loading enhances the dispersion of Mn oxides on the carrier surface. According to the results of characterization analyses, it is suggested that the main reason for the deactivation of Mn/PG is the formation of manganese sulfates which cause the permanent deactivation of Mn-based catalysts. For Sb-doped Mn/PG catalyst, SOx ad-species formed were mainly combined with SbOx rather than MnOx. This preferential interaction between SbOx and SO2 effectively shields the MnOx as active species from being sulfated by SO2 resulting in the improvement of SO2 tolerance on Sb-added catalyst. Multiple information support that, owing to the addition of Sb, original formed MnOx crystallite has been completely transformed into highly dispersed amorphous phase accounting for higher SCR activity.
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Affiliation(s)
- Xianlong Zhang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China; Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei 230009, China
| | - Shuangshuang Lv
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Xincheng Zhang
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Kesong Xiao
- Instrumental Analysis Center, Hefei University of Technology, Hefei 230009, China
| | - Xueping Wu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China.
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10
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Alshehri A, Narasimharao K. Antimony Substituted Ammonium 12-Molybdophosphoric Acid Catalysts for Gas Phase Chlorobenzene Oxidation. Catal Letters 2020. [DOI: 10.1007/s10562-020-03372-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Fernández-Aguirre MG, Berenguer R, Beaumont S, Nuez M, La Rosa-Toro A, Peralta-Hernández JM, Morallón E. The generation of hydroxyl radicals and electro-oxidation of diclofenac on Pt-doped SnO2–Sb electrodes. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136686] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Jiménez-Morales I, Haidar F, Cavaliere S, Jones D, Rozière J. Strong Interaction between Platinum Nanoparticles and Tantalum-Doped Tin Oxide Nanofibers and Its Activation and Stabilization Effects for Oxygen Reduction Reaction. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02220] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Fatima Haidar
- ICGM Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, Cedex 5, France
| | - Sara Cavaliere
- ICGM Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, Cedex 5, France
- Institut Universitaire de France (IUF), 75231 Paris, Cedex 5, France
| | - Deborah Jones
- ICGM Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, Cedex 5, France
| | - Jacques Rozière
- ICGM Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, Cedex 5, France
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13
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Huang L, Li D, Liu J, Yang L, Dai C, Ren N, Feng Y. Construction of TiO 2 nanotube clusters on Ti mesh for immobilizing Sb-SnO 2 to boost electrocatalytic phenol degradation. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122329. [PMID: 32126423 DOI: 10.1016/j.jhazmat.2020.122329] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/15/2020] [Accepted: 02/15/2020] [Indexed: 06/10/2023]
Abstract
An efficient Sb-doped SnO2 electrode featuring superior electrocatalytic characteristic and long stability was constructed by adopting clustered TiO2 nanotubes-covered Ti mesh as substrate (M-TNTs-SnO2). Compared with the electrodes prepared with mere Ti mesh or Ti plate grew with TiO2 nanotube, the M-TNTs-SnO2 exhibited higher TOC removal (99.97 %) and mineralization current efficiency (44.0 %), and longer accelerated service lifetime of 105 h for electrochemical degradation of phenol. The enhanced performance was mainly ascribed to the introduction of mutually self-supported TiO2 nanotube clusters in different orientations. Such unique structure not only favored a compact and smooth surface of catalyst layer which improved the stability of electrode by reinforcing the binding force between substrate and catalyst layer, but also increased the loading capacity for catalysts, leading to 1.5-2.2 times higher of ·OH generation, the main active species for indirect electrochemical oxidation of phenol. Meanwhile, the transverse electron transfer from TiO2 nanotube to catalyst layer was possibly achieved to further prompt the generation of ·OH. This study may provide a feasible option to design of efficient electrodes for electrocatalytic degradation of organic pollutants.
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Affiliation(s)
- Linlin Huang
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Da Li
- School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Junfeng Liu
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Lisha Yang
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Changchao Dai
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Nanqi Ren
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yujie Feng
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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14
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Williamson BD, Featherstone TJ, Sathasivam SS, Swallow JEN, Shiel H, Jones LAH, Smiles MJ, Regoutz A, Lee TL, Xia X, Blackman C, Thakur PK, Carmalt CJ, Parkin IP, Veal TD, Scanlon DO. Resonant Ta Doping for Enhanced Mobility in Transparent Conducting SnO 2. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2020; 32:1964-1973. [PMID: 32296264 PMCID: PMC7147269 DOI: 10.1021/acs.chemmater.9b04845] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/17/2020] [Indexed: 05/16/2023]
Abstract
Transparent conducting oxides (TCOs) are ubiquitous in modern consumer electronics. SnO2 is an earth abundant, cheaper alternative to In2O3 as a TCO. However, its performance in terms of mobilities and conductivities lags behind that of In2O3. On the basis of the recent discovery of mobility and conductivity enhancements in In2O3 from resonant dopants, we use a combination of state-of-the-art hybrid density functional theory calculations, high resolution photoelectron spectroscopy, and semiconductor statistics modeling to understand what is the optimal dopant to maximize performance of SnO2-based TCOs. We demonstrate that Ta is the optimal dopant for high performance SnO2, as it is a resonant dopant which is readily incorporated into SnO2 with the Ta 5d states sitting ∼1.4 eV above the conduction band minimum. Experimentally, the band edge electron effective mass of Ta doped SnO2 was shown to be 0.23m 0, compared to 0.29m 0 seen with conventional Sb doping, explaining its ability to yield higher mobilities and conductivities.
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Affiliation(s)
- Benjamin
A. D. Williamson
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
- Thomas
Young Centre, University College London, Gower Street, London WC1E 6BT, United
Kingdom
| | - Thomas J. Featherstone
- Stephenson
Institute for Renewable Energy and Department of Physics, University of Liverpool, Liverpool L69 7ZF, United Kingdom
| | - Sanjayan S. Sathasivam
- Materials
Research Centre, Chemistry Department, University
College London,, London WC1H 0AJ, United Kingdom
| | - Jack E. N. Swallow
- Stephenson
Institute for Renewable Energy and Department of Physics, University of Liverpool, Liverpool L69 7ZF, United Kingdom
| | - Huw Shiel
- Stephenson
Institute for Renewable Energy and Department of Physics, University of Liverpool, Liverpool L69 7ZF, United Kingdom
| | - Leanne A. H. Jones
- Stephenson
Institute for Renewable Energy and Department of Physics, University of Liverpool, Liverpool L69 7ZF, United Kingdom
| | - Matthew J. Smiles
- Stephenson
Institute for Renewable Energy and Department of Physics, University of Liverpool, Liverpool L69 7ZF, United Kingdom
| | - Anna Regoutz
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Tien-Lin Lee
- Diamond
Light Source Ltd., Diamond House,
Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11
0DE, United Kingdom
| | - Xueming Xia
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Christopher Blackman
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Pardeep K. Thakur
- Diamond
Light Source Ltd., Diamond House,
Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11
0DE, United Kingdom
| | - Claire J. Carmalt
- Materials
Research Centre, Chemistry Department, University
College London,, London WC1H 0AJ, United Kingdom
| | - Ivan P. Parkin
- Materials
Research Centre, Chemistry Department, University
College London,, London WC1H 0AJ, United Kingdom
| | - Tim D. Veal
- Stephenson
Institute for Renewable Energy and Department of Physics, University of Liverpool, Liverpool L69 7ZF, United Kingdom
- E-mail:
| | - David O. Scanlon
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
- Thomas
Young Centre, University College London, Gower Street, London WC1E 6BT, United
Kingdom
- E-mail:
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15
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Sandin S, Abo Hamad A, Cuartero M, de Marco R, Crespo GA, Bäckström J, Cornell A. Deactivation and selectivity for electrochemical ozone production at Ni- and Sb-doped SnO2 / Ti electrodes. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Sun Y, Cheng S, Mao Z, Lin Z, Ren X, Yu Z. High electrochemical activity of a Ti/SnO 2-Sb electrode electrodeposited using deep eutectic solvent. CHEMOSPHERE 2020; 239:124715. [PMID: 31499311 DOI: 10.1016/j.chemosphere.2019.124715] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 06/10/2023]
Abstract
Electrodeposition is an economical and efficient way to prepare Ti/SnO2-Sb electrode for electrochemical oxidizing pollutants in wastewater. The solvent used for electrodeposition has a great effect on electrode performance. The conventional Ti/SnO2-Sb electrode electrodeposited using aqueous solvent has poor electrochemical activity and short service life. In this study, a Ti/SnO2-Sb electrode was prepared via electrodeposition using a deep eutectic solvent (DES). This new Ti/SnO2-Sb-DES electrode performed a rate constant of 0.571 h-1 for methylene blue decolorization and long accelerated service life of 12.9 h (100 mA cm-2; 0.5 M H2SO4), which were 1.7 times and 3.2 times as high as that of the electrode prepared in aqueous solvent, respectively. The enhanced properties were related to the 1.3 times increased electrochemically active surface area of Ti/SnO2-Sb-DES electrode which had a rough, multilayer and uniform surface structure packed with nano-sized coating particles. In conclusion, this study developed a facile, green and efficient pathway to prepare Ti/SnO2-Sb electrode with high performance.
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Affiliation(s)
- Yi Sun
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Shaoan Cheng
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China.
| | - Zhengzhong Mao
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Zhufan Lin
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Xiangrong Ren
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
| | - Zhen Yu
- State Key Laboratory of Clean Energy, Department of Energy Engineering, Zhejiang University, Hangzhou, 310027, PR China
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17
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Nam KB, Yeo JH, Hong SC. Study of the Phosphorus Deactivation Effect and Resistance of Vanadium-Based Catalysts. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01404] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ki Bok Nam
- Department of Environmental Energy Engineering, Graduate School of Kyonggi University, 94-6 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 443-760, Republic of Korea
| | - Jong Hyeon Yeo
- Department of Environmental Energy Engineering, Graduate School of Kyonggi University, 94-6 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 443-760, Republic of Korea
| | - Sung Chang Hong
- Department of Environmental Energy Engineering, Graduate School of Kyonggi University, 94-6 San, Iui-dong, Youngtong-ku, Suwon-si, Gyeonggi-do 443-760, Republic of Korea
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18
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Wang CC, Chen KC, Shieu FS, Shih HC. Characterization and photoluminescence of V2O5@Pt core-shell nanostructures as fabricated by atomic layer deposition. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.05.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Zhang B, Chen M, Zhang C, He H. Electrochemical oxidation of gaseous benzene on a Sb-SnO 2/foam Ti nano-coating electrode in all-solid cell. CHEMOSPHERE 2019; 217:780-789. [PMID: 30453275 DOI: 10.1016/j.chemosphere.2018.10.222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/23/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
An all-solid cell with a solid polymer electrolyte was applied to electrochemical oxidation of low-concentration indoor gaseous aromatic pollution. Antimony-doped tin dioxide nanocoatings deposited on a titanium foam substrate (Ti/Sb-SnO2) with different Sb/Sn ratios (4.8-14.0 mol%) and loading weight of Sb-SnO2 (4.4-7.7 mg cm-2) were used as dimensionally stable anodes. Sn and Sb were homogeneously dispersed on the substrate, and a crack-free nanocoating was built when the loading of nanocoating was increased to 6.3 mg cm-2. The activity tests for oxidation of benzene showed that 40 ppm gaseous benzene was converted to CO2 with high selectivity (85%) at the low cell voltage of 2.0 V in this all-solid cell. The conversion of benzene was greatly increased from 30% to 100% upon increasing the Sb/Sn ratio of the nanocoating from 4.7 mol% to 14.0 mol%. With the increase of nanocoating loading (Sb/Sn = 14.0 mol%) from 6.3 to 7.7 mg cm-2, the conversion of 100 ppm benzene was increased from 70% to 100%. Cyclic voltammetry revealed that high Sb content in the oxide nanocoating increased the overpotential and current intensity of the oxygen evolution reaction. The large outer charge qo∗ related to the electroactive surface of the SS-7.7/Ti3 electrode was up to 305.3 mC cm-2, which were responsible for its excellent electrochemical performance in the benzene oxidation process. Our studies provide a potential method for removal of indoor VOCs at ambient temperature.
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Affiliation(s)
- Bo Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Min Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Changbin Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
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20
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Influence of Cr doping on the oxygen evolution potential of SnO2/Ti and Sb-SnO2/Ti electrodes. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2018.11.058] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Schuurman JC, McNeill AR, Martinez-Gazoni RF, Scott JI, Reeves RJ, Allen MW, Downard AJ. The effect of covalently bonded aryl layers on the band bending and electron density of SnO2 surfaces probed by synchrotron X-ray photoelectron spectroscopy. Phys Chem Chem Phys 2019; 21:17913-17922. [DOI: 10.1039/c9cp03040a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A downward to upward surface band bending change can be induced by grafted 4-(trifluoromethyl)phenyl groups on SnO2.
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Affiliation(s)
- Joel C. Schuurman
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8140
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Alexandra R. McNeill
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8140
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Rodrigo F. Martinez-Gazoni
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8140
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Jonty I. Scott
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8140
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Roger J. Reeves
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8140
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Martin W. Allen
- MacDiarmid Institute for Advanced Materials and Nanotechnology
- Wellington 6012
- New Zealand
- Department of Electrical and Computer Engineering
- University of Canterbury
| | - Alison J. Downard
- School of Physical and Chemical Sciences
- University of Canterbury
- Christchurch 8140
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
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22
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Chen W, Wang Z, Duan X, Qian G, Chen D, Zhou X. Structural and kinetic insights into Pt/CNT catalysts during hydrogen generation from ammonia borane. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2017.05.056] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Yuan C, Liu S, Yang Y, Yu M, Tian Y, Wang J, Bian X. Structure-Controllable Binary Nanoporous-Silicon/Antimony Alloy as Anode for High-Performance Lithium-Ion Batteries. ChemElectroChem 2018. [DOI: 10.1002/celc.201800776] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chao Yuan
- Key Laboratory for Liquid-Solid Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering; Shandong University; Jinan 250061 China
| | - Shuai Liu
- Key Laboratory for Liquid-Solid Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering; Shandong University; Jinan 250061 China
| | - Yinghui Yang
- Key Laboratory for Liquid-Solid Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering; Shandong University; Jinan 250061 China
| | - Mengchun Yu
- Key Laboratory for Liquid-Solid Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering; Shandong University; Jinan 250061 China
| | - Yuan Tian
- Key Laboratory for Liquid-Solid Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering; Shandong University; Jinan 250061 China
| | - Junzhang Wang
- Key Laboratory for Liquid-Solid Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering; Shandong University; Jinan 250061 China
| | - Xiufang Bian
- Key Laboratory for Liquid-Solid Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering; Shandong University; Jinan 250061 China
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24
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Qi J, Chen K, Xing Y, Fan H, Zhao H, Yang J, Li L, Yan B, Zhou J, Guo L, Yang S. Application of 3D hierarchical monoclinic-type structural Sb-doped WO 3 towards NO 2 gas detection at low temperature. NANOSCALE 2018; 10:7440-7450. [PMID: 29644374 DOI: 10.1039/c8nr01446a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Currently, the development of semiconducting metal oxide (SMO)-based gas sensors with innovative modification and three-dimensional (3D) structural designs has become a significant scientific interest due to their potential for addressing key technological challenges. Herein, gas sensing devices based on the 3D hierarchical monoclinic-type structural Sb-doped WO3 (HMSW) gas sensing material were successfully constructed by ordered assembly of urchin-like monoclinic-type structural (P2/m) Sb-doped WO2.72 (W18O49) (UMSW) nanocrystals and nanowires. The crystalline microstructure, composition, morphological characteristics, and possible growth mechanisms were systematically investigated. The results of the gas sensor measurements, performed simultaneously on multiple samples, indicated that the 3D HMSW material has superior sensitivity (S = 122) and high selectivity to ppm-level NO2 at 30 °C with a significantly larger response than the best-reported values from other WO3-based gas sensors fabricated so far. All the results clearly demonstrate that the combined effects of abundant structural defects derived from Sb doping modification, reduced band gap, and 3D hierarchical microstructure synergistically play a key role in the NO2 gas sensing performance. Such excellent gas sensing performance foresees the great potential application of 3D hierarchical structural WO3-based sensors for fast and effective detection of toxic gases that can aid in human health and public safety.
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Affiliation(s)
- Juanjuan Qi
- School of Chemistry, Beihang University, Beijing 100191, China.
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25
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Lei X, Li L, Chen Y, Hu Y. Effect of calcination temperature on the properties of Ti/SnO 2-Sb anode and its performance in Ni-EDTA electrochemical degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:11683-11693. [PMID: 29442304 DOI: 10.1007/s11356-018-1444-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 01/30/2018] [Indexed: 06/08/2023]
Abstract
Pd-doped Ti/SnO2-Sb anode was prepared at different calcination temperatures by a wet-impregnation method and employed in simultaneous electrochemical catalytic degradation of Ni-EDTA and recovery of nickel. The results showed that Ti/SnO2-Sb-Pd-500 could achieve the highest electrochemical activity (87.5% of Ni-EDTA removal efficiency), superior durability (50.7 h of accelerated lifetime), and higher Ni recovery (19.8%) on cathode. Cyclic voltammetry (CV) and linear sweep voltammetry (LSV) analysis suggested that Ni-EDTA degradation on anode was mainly indirect oxidation-controlled reaction, attributing to the high oxide state of MOX + 1 and MOX(·OH), rather than direct oxidation. Scanning electron microscope (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analyses indicated that calcination temperature could modify the morphology of electrode surface and affect the incorporation and valence state transformation of metal species (Sb and Pd) in SnO2 lattice. Ti/SnO2-Sb-Pd-500 achieved the highest electrochemical capacity with the highest levels of adsorbed oxygen Oads/ET (27.11%) and lattice oxygen Olat/ET (29.69%). Moreover, the operation conditions for Ni-EDTA electrochemical degradation were optimized. These findings were valuable for developing a high-performance electrode for Ni-EDTA electrochemical degradation.
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Affiliation(s)
- Xin Lei
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Lianghao Li
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Yuancai Chen
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
| | - Yongyou Hu
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
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26
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Kim J, Kim DH, Kwon DW, Ha HP. Rational selection of Fe2V4O13 over FeVO4 as a preferred active site on Sb-promoted TiO2 for catalytic NOX reduction with NH3. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01304g] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe2V4O13 outperforms FeVO4 as an active site for NH3-SCR and resists SO2/ABS/Na poisons with the inclusion of an Sb promoter.
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Affiliation(s)
- Jongsik Kim
- Materials Architecturing Research Center
- Korea Institute of Science and Technology
- Seoul
- South Korea
| | - Dong Ho Kim
- Materials Architecturing Research Center
- Korea Institute of Science and Technology
- Seoul
- South Korea
| | - Dong Wook Kwon
- Materials Architecturing Research Center
- Korea Institute of Science and Technology
- Seoul
- South Korea
| | - Heon Phil Ha
- Materials Architecturing Research Center
- Korea Institute of Science and Technology
- Seoul
- South Korea
- Department of Nanomaterials Science and Engineering
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27
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Jiménez-Morales I, Cavaliere S, Jones D, Rozière J. Strong metal–support interaction improves activity and stability of Pt electrocatalysts on doped metal oxides. Phys Chem Chem Phys 2018. [DOI: 10.1039/c8cp00176f] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Niobium and antimony doped tin oxide loose-tubes decorated with Pt nanoparticles present outstanding mass activity and stability, exceeding those of a reference carbon-based electrocatalyst.
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Affiliation(s)
- Ignacio Jiménez-Morales
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l’Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Sara Cavaliere
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l’Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Deborah Jones
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l’Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
| | - Jacques Rozière
- Institut Charles Gerhardt Montpellier
- UMR CNRS 5253
- Agrégats Interfaces et Matériaux pour l’Energie
- Université de Montpellier
- 34095 Montpellier Cedex 5
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28
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Shao C, Yu J, Li X, Wang X, Zhu K. Influence of the Pt nanoscale interlayer on stability and electrical property of Ti/Pt/Sb-SnO2 electrode: A synergetic experimental and computational study. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.09.057] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Zhang Y, Wei K, Xu A, Han W, Sun X, Li J, Shen J, Wang L. Pesticide tailwater deeply treated by tubular porous electrode reactor (TPER): Purpose for discharging and cost saving. CHEMOSPHERE 2017; 185:86-93. [PMID: 28688340 DOI: 10.1016/j.chemosphere.2017.06.115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 06/25/2017] [Accepted: 06/27/2017] [Indexed: 06/07/2023]
Abstract
Pesticide tailwater often contains residual and toxic contaminants of triazole fungicides (TFs) due to their poor biodegradability which will do great harm to local aquatic systems. For this case, a novel electrochemical reactor (TPER) equipped a tubular porous RuO2-Sb2O5-SnO2 electrode was assembled and then employed to deeply treat pesticide tailwater. Characterizations of the electrode studied by SEM, EDS and XRD analysis indicated that it owns a porous structure and a compact and crack-free surface. Influence of the porous structure on electrochemical property was examined by cyclic voltammetry and normal pulse voltammetry. The results indicated that porous structure can not only enlarge electrochemical active area but also increase mass transfer efficiency by 5.7-fold in flow-through mode compared with batch mode. Furthermore, the optimal operating conditions of TPER were flow rate of 250 mL min-1 and current density of 4 mA cm-2. After 1.5 h treatment under these conditions, Tz, TC and PPC were removed by 98.9%, 99.0% and 98.4% respectively, while 81.9% of COD was also removed. Additionally, the microbial content was dropped to 0 CFU mL-1 and fecal coliform was lower than 2 MPN (100 mL)-1. All results demonstrated that the treated tailwater has met the Class 1 of National Discharge Standard of China. Especially, operating cost of TPER was only $ 0.33 per ton. The excellent performance together with the low cost indicated that TPER is a promising option for depth treatment of industrial tailwater.
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Affiliation(s)
- Yonghao Zhang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Kajia Wei
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Anlin Xu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Weiqing Han
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China.
| | - Xiuyun Sun
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Jiansheng Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Jinyou Shen
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
| | - Lianjun Wang
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China.
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30
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Li X, Wu Y, Zhu W, Xue F, Qian Y, Wang C. Enhanced electrochemical oxidation of synthetic dyeing wastewater using SnO 2 -Sb-doped TiO 2 -coated granular activated carbon electrodes with high hydroxyl radical yields. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.09.109] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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31
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Shao C, Chen A, Yan B, Shao Q, Zhu K. Improvement of electrochemical performance of tin dioxide electrodes through manganese and antimony co-doping. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Figueredo-Sobrinho FDAAD, Lucas FWDS, Fill TP, Rodrigues-Filho E, Mascaro LH, Casciano PNDS, Lima-Neto PD, Correia AN. Insights into electrodegradation mechanism of tebuconazole pesticide on Bi-doped PbO 2 electrodes. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.12.062] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Yang SY, Choi W, Park H. TiO2 nanotube array photoelectrocatalyst and Ni-Sb-SnO2 electrocatalyst bifacial electrodes: a new type of bifunctional hybrid platform for water treatment. ACS APPLIED MATERIALS & INTERFACES 2015; 7:1907-1914. [PMID: 25561436 DOI: 10.1021/am5076748] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Bifunctional hybrid electrodes capable of generating various reactive oxygen species (ROS) over a wide range of potentials were developed by coupling electrocatalysts and photoelectrocatalysts. To achieve this, Ni-doped Sb-SnO2 (NSS) was deposited on one side of a titanium (Ti) foil while the other side was anodized to grow a TiO2 nanotube array (TNA) for electrochemical ozone generation and photoelectrochemical hydroxyl radical generation, respectively. Surface characterization indicated that NSS and TNA were formed and spatially separated yet electrically connected through the Ti substrate. While each catalyst possessed unique electrochemical properties, the coupling of both catalysts resulted in mixed electrochemical properties that drove electrocatalysis at high potentials and photoelectrocatalysis at low potentials. The performance of the NSS/TNA electrode for phenol decomposition was ∼3 times greater than that of single-layer catalysts and ∼1.5 times greater than the combined catalytic performances of the individual NSS and TNA catalysts. This synergistic effect was attributed partly to the simultaneous generation of hydroxyl radicals and ozone, followed by the production of other ROS. A mechanism for the generation of ROS was discussed.
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Affiliation(s)
- So Young Yang
- School of Energy Engineering, Kyungpook National University , Daegu 702-701, Korea
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34
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Zhao H, Tang J, Lai Q, Cheng G, Liu Y, Chen R. Enhanced visible light photocatalytic performance of Sb-doped (BiO)2CO3 nanoplates. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2014.09.026] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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35
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Berenguer R, Sieben JM, Quijada C, Morallón E. Pt- and Ru-doped SnO₂-Sb anodes with high stability in alkaline medium. ACS APPLIED MATERIALS & INTERFACES 2014; 6:22778-22789. [PMID: 25453898 DOI: 10.1021/am506958k] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Different Pt- and Ru-doped Ti/SnO2-Sb electrodes were synthesized by thermal decomposition. The effect of the gradual substitution of Sb by Ru in the nominal composition on the physicochemical and electrochemical properties were evaluated. The electrochemical stability of the electrodes was estimated from accelerated tests at 0.5 A cm(-2) in 1 M NaOH. Both as-synthesized and deactivated electrodes were thoroughly characterized by scanning electron microscopy (SEM), energy-dispersive X-ray microanalysis (EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction analysis (XRD). The incorporation of a small amount (about 3 at. %) of both Pt and Ru into the SnO2-Sb electrodes produced a 400-times increase in their service life in alkaline medium, with no remarkable change in the electrocatalysis of the oxygen evolution reaction (OER). It is concluded that the deactivation of the electrodes is promoted by alkaline dissolution of metal species and coating detachment at high potentials. The introduction of Pt has a coating compacting effect, and Ru(IV), at low amounts until 9.75 at. %, replaces the Sn(IV) cations in the rutile-like SnO2 structure to form a solid solution that strongly increases the stability of the electrodes. The observed Ru segregation and decreased stability for larger Ru contents (x > 9.75 at. %), together with the selective dissolution of Ru after deactivation, suggest that the formation of a homogeneous (RuδSn1-δ)O2 single-phase is crucial for the stabilization of these electrodes.
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Affiliation(s)
- Raúl Berenguer
- Andalucía Tech, Departamento de Ingeniería Química, Universidad de Málaga , 29071 Málaga, Spain
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Chen W, Ji J, Feng X, Duan X, Qian G, Li P, Zhou X, Chen D, Yuan W. Mechanistic Insight into Size-Dependent Activity and Durability in Pt/CNT Catalyzed Hydrolytic Dehydrogenation of Ammonia Borane. J Am Chem Soc 2014; 136:16736-9. [DOI: 10.1021/ja509778y] [Citation(s) in RCA: 240] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Wenyao Chen
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jian Ji
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiang Feng
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xuezhi Duan
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Gang Qian
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Ping Li
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xinggui Zhou
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - De Chen
- Department
of Chemical Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway
| | - Weikang Yuan
- State Key
Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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37
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Chaplin BP. Critical review of electrochemical advanced oxidation processes for water treatment applications. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:1182-203. [PMID: 24549240 DOI: 10.1039/c3em00679d] [Citation(s) in RCA: 250] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Electrochemical advanced oxidation processes (EAOPs) have emerged as novel water treatment technologies for the elimination of a broad-range of organic contaminants. Considerable validation of this technology has been performed at both the bench-scale and pilot-scale, which has been facilitated by the development of stable electrode materials that efficiently generate high yields of hydroxyl radicals (OH˙) (e.g., boron-doped diamond (BDD), doped-SnO2, PbO2, and substoichiometic- and doped-TiO2). Although a promising new technology, the mechanisms involved in the oxidation of organic compounds during EAOPs and the corresponding environmental impacts of their use have not been fully addressed. In order to unify the state of knowledge, identify research gaps, and stimulate new research in these areas, this review critically analyses published research pertaining to EAOPs. Specific topics covered in this review include (1) EAOP electrode types, (2) oxidation pathways of select classes of contaminants, (3) rate limitations in applied settings, and (4) long-term sustainability. Key challenges facing EAOP technologies are related to toxic byproduct formation (e.g., ClO4(-) and halogenated organic compounds) and low electro-active surface areas. These challenges must be addressed in future research in order for EAOPs to realize their full potential for water treatment.
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Affiliation(s)
- Brian P Chaplin
- Department of Chemical Engineering, University of Illinois at Chicago, 810 S. Clinton Ave., Chicago, IL 60607, USA.
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Wang Q, Jin T, Hu Z, Zhou L, Zhou M. TiO2-NTs/SnO2-Sb anode for efficient electrocatalytic degradation of organic pollutants: Effect of TiO2-NTs architecture. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2012.10.006] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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Xu H, Li AP, Qi Q, Jiang W, Sun YM. Electrochemical degradation of phenol on the La and Ru doped Ti/SnO2-Sb electrodes. KOREAN J CHEM ENG 2012. [DOI: 10.1007/s11814-012-0014-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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41
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Du X, Gao X, Fu Y, Gao F, Luo Z, Cen K. The co-effect of Sb and Nb on the SCR performance of the V2O5/TiO2 catalyst. J Colloid Interface Sci 2012; 368:406-12. [DOI: 10.1016/j.jcis.2011.11.026] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Revised: 11/11/2011] [Accepted: 11/13/2011] [Indexed: 11/28/2022]
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42
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The mechanism of antimony(III) removal and its reactions on the surfaces of Fe–Mn Binary Oxide. J Colloid Interface Sci 2011; 363:320-6. [DOI: 10.1016/j.jcis.2011.07.026] [Citation(s) in RCA: 194] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2011] [Revised: 07/02/2011] [Accepted: 07/09/2011] [Indexed: 11/20/2022]
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43
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Volosin AM, Sharma S, Traverse C, Newman N, Seo DK. One-pot synthesis of highly mesoporous antimony-doped tin oxide from interpenetrating inorganic/organic networks. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm12362a] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Shekarchizade H, Amini MK. Effect of Elemental Composition on the Structure, Electrochemical Properties, and Ozone Production Activity of Ti/SnO2-Sb-Ni Electrodes Prepared by Thermal Pyrolysis Method. INTERNATIONAL JOURNAL OF ELECTROCHEMISTRY 2011. [DOI: 10.4061/2011/240837] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Ti/SnO2-Sb-Ni electrodes with various Ni- and Sb-doping levels have been prepared by dip-coating thermal pyrolysis procedure, and their simultaneous electrochemical ozone production (EOP) and oxygen evolution reaction (OER) were investigated. The effects of electrode composition on the nanostructure, morphology, electrochemical behavior, kinetic parameters, and lifetime of the electrodes were systematically studied using X-ray diffraction, scanning electron microscopy, cyclic voltammetry, linear sweep voltammetry, and chronopotentiometry. Dissolved ozone was produced in a quartz cell and its concentration was monitored by in situ UV spectrophotometry. The presence of small amounts of Ni (Ni : Sn atomic ratio of 0.2 : 100) gives valuable characteristics to the electrodes such as increasing EOP activity and service life. Higher Ni concentrations increase the electrode film resistance and decrease its capacitance, roughness factor, and service life, while increasing Sb level up to 12 atom% improves the electrode performance with respect to these parameters. Nevertheless, the Sb/Sn atomic ratio of more than 2% reduces the EOP current efficiency in favor of OER. The optimum composition of the electrode for EOP was determined to be Sb/Sn and Ni/Sn atomic ratios of 2% and 0.2%, respectively. The highest current efficiency was 48.3% in 0.1 M H2SO4solution at room temperature.
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Affiliation(s)
| | - Mohammad K. Amini
- Chemistry Department, University of Isfahan, Isfahan 81744-73441, Iran
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Canevari TC, Vinhas RCG, Landers R, Gushikem Y. SiO2/SnO2/Sb2O5 microporous ceramic material for immobilization of Meldola's blue: application as an electrochemical sensor for NADH. Biosens Bioelectron 2010; 26:2402-6. [PMID: 21067911 DOI: 10.1016/j.bios.2010.10.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Revised: 10/06/2010] [Accepted: 10/11/2010] [Indexed: 10/18/2022]
Abstract
The mixed oxide SiO(2)/SnO(2), containing 25 wt% of SnO(2), determined by X-ray fluorescence, was prepared by the sol-gel method and the porous matrix obtained was then grafted with Sb (V), resulting the solid designated as (SiSnSb). XPS indicated 0.7% of Sb atoms on the surface. Sb grafted on the surface contains Brønsted acid centers (SbOH groups) that can immobilize Meldola's blue (MB(+)) cationic dye onto the surface by an ion exchange reaction, resulting the solid designated as (SiSnSb/MB). In the present case a surface concentration of MB(+)=2.5×10(-11) mol cm(2) on the surface was obtained. A homogeneous mixture of the SiSnSb/MB with ultra pure graphite (99.99%) was pressed in disk format and used to fabricate a working electrode that displayed an excellent specific electrocatalytic response to NADH oxidation, with a formal potential of -0.05 V at pH 7.3. The electrochemical properties of the resulting electrode were investigated thoroughly with cyclic voltammetric and chronoamperometry techniques. The proposed sensor showed a good linear response range for NADH concentrations between 8×10(-5) and 9.0×10(-4) mol L(-1), with a detection limit of 1.5×10(-7) mol L(-1). The presence of dopamine and ascorbic acid did not show any interference in the detection of NADH on this modified electrode surface.
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Affiliation(s)
- Thiago C Canevari
- Institute of Chemistry, State University of Campinas, P.O. Box 6154, 13084-971 Campinas, SP, Brazil
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46
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On the behaviour of doped SnO2 anodes stabilized with platinum in the electrochemical degradation of reactive dyes. Electrochim Acta 2010. [DOI: 10.1016/j.electacta.2010.07.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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47
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Costa CR, Montilla F, Morallón E, Olivi P. Electrochemical oxidation of synthetic tannery wastewater in chloride-free aqueous media. JOURNAL OF HAZARDOUS MATERIALS 2010; 180:429-435. [PMID: 20452722 DOI: 10.1016/j.jhazmat.2010.04.048] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Revised: 03/01/2010] [Accepted: 04/12/2010] [Indexed: 05/29/2023]
Abstract
The electrochemical treatment of a synthetic tannery wastewater, prepared with several compounds used by finishing tanneries, was studied in chloride-free media. Boron-doped diamond (Si/BDD), antimony-doped tin dioxide (Ti/SnO(2)-Sb), and iridium-antimony-doped tin dioxide (Ti/SnO(2)-Sb-Ir) were evaluated as anode. The influence of pH and current density on the treatment was assessed by means of the parameters used to measure the level of organic contaminants in the wastewater; i.e., total phenols, chemical oxygen demand (COD), total organic carbon (TOC), and absorbance. Results showed that faster decrease in these parameters occurred when the Si/BDD anode was used. Good results were obtained with the Ti/SnO(2)-Sb anode, but its complete deactivation was reached after 4h of electrolysis at 25 mA cm(-2), indicating that the service life of this electrode is short. The Ti/SnO(2)-Sb-Ir anode is chemically and electrochemically more stable than the Ti/SnO(2)-Sb anode, but it is not suitable for the electrochemical treatment under the studied conditions. No significant changes were observed for electrolyses performed at different pH conditions with Si/BDD, and this electrode led to almost complete mineralization after 4h of electrolysis at 100 mA cm(-2). The increase in current density resulted in faster wastewater oxidation, with lower current efficiency and higher energy consumption. Si/BBD proved to be the best electrodic material for the direct electrooxidation of tannery wastewaters.
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Affiliation(s)
- Carla Regina Costa
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, CEP 14040-901, Ribeirão Preto, SP, Brazil
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48
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Ren XB, Lu HY, Lin HB, Liu YN, Xing Y. Preparation and characterization of the Ti/IrO2/WO3 as supercapacitor electrode materials. RUSS J ELECTROCHEM+ 2010. [DOI: 10.1134/s102319351001009x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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49
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del Río AI, Molina J, Bonastre J, Cases F. Study of the electrochemical oxidation and reduction of C.I. Reactive Orange 4 in sodium sulphate alkaline solutions. JOURNAL OF HAZARDOUS MATERIALS 2009; 172:187-95. [PMID: 19647934 DOI: 10.1016/j.jhazmat.2009.06.147] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Revised: 06/22/2009] [Accepted: 06/28/2009] [Indexed: 05/16/2023]
Abstract
Synthetic solutions of hydrolysed C.I. Reactive Orange 4, a monoazo textile dye commercially named Procion Orange MX-2R (PMX2R) and colour index number C.I. 18260, was exposed to electrochemical treatment under galvanostatic conditions and Na2SO4 as electrolyte. The influence of the electrochemical process as well as the applied current density was evaluated. Ti/SnO2-Sb-Pt and stainless steel electrodes were used as anode and cathode, respectively, and the intermediates generated on the cathode during electrochemical reduction were investigated. Aliquots of the solutions treated were analysed by UV-visible and FTIR-ATR spectroscopy confirming the presence of aromatic structures in solution when an electro-reduction was carried out. Electro-oxidation degraded both the azo group and aromatic structures. HPLC measures revealed that all processes followed pseudo-first order kinetics and decolourisation rates showed a considerable dependency on the applied current density. CV experiments and XPS analyses were carried out to study the behaviour of both PMX2R and intermediates and to analyse the state of the cathode after the electrochemical reduction, respectively. It was observed the presence of a main intermediate in solution after an electrochemical reduction whose chemical structure is similar to 2-amino-1,5-naphthalenedisulphonic acid. Moreover, the analysis of the cathode surface after electrochemical reduction reveals the presence of a coating layer with organic nature.
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Affiliation(s)
- A I del Río
- Departamento de Ingeniería Textil y Papelera, Escuela Politécnica Superior de Alcoy, Universidad Politécnica de Valencia. Plaza Ferrándiz y Carbonell, Alcoy, Alicante, Spain
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50
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Chen YH, Franzreb M, Lin RH, Chen LL, Chang CY, Yu YH, Chiang PC. Platinum-Doped TiO2/Magnetic Poly(methyl methacrylate) Microspheres as a Novel Photocatalyst. Ind Eng Chem Res 2009. [DOI: 10.1021/ie900509t] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Yi-Hung Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, Institute for Technical Chemistry, Forschungszentrum Karlsruhe GmbH, Karlsruhe 76021, Germany, Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan, and Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Matthias Franzreb
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, Institute for Technical Chemistry, Forschungszentrum Karlsruhe GmbH, Karlsruhe 76021, Germany, Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan, and Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Rong-Hsien Lin
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, Institute for Technical Chemistry, Forschungszentrum Karlsruhe GmbH, Karlsruhe 76021, Germany, Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan, and Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Li-Lin Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, Institute for Technical Chemistry, Forschungszentrum Karlsruhe GmbH, Karlsruhe 76021, Germany, Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan, and Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Ching-Yuan Chang
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, Institute for Technical Chemistry, Forschungszentrum Karlsruhe GmbH, Karlsruhe 76021, Germany, Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan, and Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Yue-Hwa Yu
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, Institute for Technical Chemistry, Forschungszentrum Karlsruhe GmbH, Karlsruhe 76021, Germany, Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan, and Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Pen-Chi Chiang
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106, Taiwan, Institute for Technical Chemistry, Forschungszentrum Karlsruhe GmbH, Karlsruhe 76021, Germany, Department of Chemical and Material Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan, and Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
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