1
|
Ashrafi P, Nematollahi D, Shabanloo A, Ansari A, Sadatnabi A, Sadeghinia A. Enhanced favipiravir drug degradation using the synergy of PbO 2-based anodic oxidation and Fe-MOF-based cathodic electro-Fenton. ENVIRONMENTAL RESEARCH 2024; 262:119883. [PMID: 39214488 DOI: 10.1016/j.envres.2024.119883] [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: 03/24/2024] [Revised: 07/21/2024] [Accepted: 08/28/2024] [Indexed: 09/04/2024]
Abstract
Favipiravir (FAV) is a widely utilized antiviral drug effective against various viruses, including SARS-CoV-2, influenza, and RNA viruses. This article aims to introduce a novel approach, known as Linear-Paired Electrocatalytic Degradation (LPED), as an efficient technique for the electrocatalytic degradation of emerging pollutants. LPED involves simultaneously utilizing a carbon-Felt/Co-PbO2 anode and a carbon-felt/Co/Fe-MOF-74 cathode, working together to degrade and mineralize FAV. The prepared anode and cathode characteristics were analyzed using XPS, SEM, EDX mapping, XRD, LSV, and CV analyses. A rotatable central composite design-based quadratic model was employed to optimize FAV degradation, yielding statistically desirable results. Under optimized conditions (pH = 5, current density = 4.2 mA/cm2, FAV concentration = 0.4 mM), individual processes of cathodic electro-Fenton and anodic oxidation with a CF/Co-PbO2 anode achieved degradation rates of 58.9% and 89.5% after 120 min, respectively. In contrast, using the LPED strategy resulted in a remarkable degradation efficiency of 98.4%. Furthermore, a cyclic voltammetric study of FAV on a glassy carbon electrode was conducted to gather additional electrochemical insights and rectify previously published data regarding redox behavior, pH-dependent properties, and adsorption activities. The research also offers a new understanding of the LPED mechanism of FAV at the surfaces of both CF/Co-PbO2 and CF/Co/Fe-MOF-74 electrodes, utilizing data from cyclic voltammetry and LC-MS techniques. The conceptual strategy of LPED is generalizable in order to the synergism of anodic oxidation and cathodic electro-Fenton for the degradation of other toxic and resistant pollutants.
Collapse
Affiliation(s)
- Parva Ashrafi
- Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 65178-38683, Iran
| | - Davood Nematollahi
- Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 65178-38683, Iran.
| | - Amir Shabanloo
- Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Amin Ansari
- Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 65178-38683, Iran; Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada.
| | - Ali Sadatnabi
- Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 65178-38683, Iran
| | - Armin Sadeghinia
- Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 65178-38683, Iran
| |
Collapse
|
2
|
Zhu Y, Wang H, Li B, Wang T, Zhu Y, Hou J. Construction of a Zero-gap Flow-Through Microfluidic Reactor with Porous RuO 2 -IrO 2 @Pt Anode for Electrocatalytic Oxidation of Antibiotics in Water. Chem Asian J 2024:e202301128. [PMID: 38323702 DOI: 10.1002/asia.202301128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/31/2024] [Accepted: 02/06/2024] [Indexed: 02/08/2024]
Abstract
In this study, a zero-gap flow-through microfluidic reactor was constructed for the degradation of tetracycline and norfloxacin in water using a porous Ti/RuO2 -IrO2 @Pt electrode as the anode and porous titanium plate as the cathode. The operation parameters included electrolyte type, electrolyte concentration, current density, initial concentration of pollutants and pH, were investigated. The degradation efficiency and energy consumption were calculated and compared with traditional electrolyzer. In the zero-gap flow-through microfluidic reactor, 100 % of both tetracycline and norfloxacin can be decomposed in 15 min, and high mineralization rate were achieved under the optimized reaction condition. And the reaction was consistent with pseudo-first-order kinetics with k value of 0.492 cm-1 and 1.010 cm-1 , for tetracycline and norfloxacin, respectively. In addition, the energy consumption was 28.33 kWh ⋅ kg-1 TC and 8.36 kWh ⋅ kg-1 NOR, for tetracycline and norfloxacin, respectively, which was much lower than that of traditional electrolyzer. The LC-MS results showed that tetracycline underwent a series of demethylation, dehydration and deamination reactions, and the norfloxacin went through ring opening reaction, decarboxylation and hydroxylation reaction, and finally both produced CO2 and H2 O.
Collapse
Affiliation(s)
- Yunqing Zhu
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xian, 710021, PR China
| | - Huan Wang
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xian, 710021, PR China
| | - Bingqing Li
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xian, 710021, PR China
| | - Tian Wang
- School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xian, 710021, PR China
| | - Yunfu Zhu
- Shaanxi Haofengjingcheng Environmental Technology Co. LTD, Xian, 710021, PR China
| | - Jianing Hou
- Shaanxi Haofengjingcheng Environmental Technology Co. LTD, Xian, 710021, PR China
| |
Collapse
|
3
|
Xu M, Gao C, Zhang X, Liang X, Hu Y, Wang F. Development of SDS-Modified PbO 2 Anode Material Based on Ti 3+ Self-Doping Black TiO 2NTs Substrate as a Conductive Interlayer for Enhanced Electrocatalytic Oxidation of Methylene Blue. Molecules 2023; 28:6993. [PMID: 37836836 PMCID: PMC10574806 DOI: 10.3390/molecules28196993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 09/23/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
Efficient and stable electrode materials are urgently required for wastewater treatment in the electrocatalytic degradation of toxic and refractory organic pollutants. Ti3+ self-doping black TiO2 nanotube arrays (Ti/B-TiO2-NTs) as an interlayer were used for preparing a novel PbO2 electrode via an electrochemical reduction technology, and a sodium dodecyl sulfate (SDS)-modified PbO2 catalytic layer was successfully achieved via an electrochemical deposition technology. The physicochemical characterization tests showed that the Ti/B-TiO2-NTs/PbO2-SDS electrodes have a denser surface and finer grain size with the introduction of Ti3+ in the interlayer of Ti/TiO2-NTs and the addition of SDS in the active layer of PbO2. The electrochemical characterization results showed that the Ti3+ self-doping black Ti/TiO2-NTs/PbO2-SDS electrode had higher oxygen evolution potential (2.11 V vs. SCE), higher electrode stability, smaller charge-transfer resistance (6.74 Ω cm-2), and higher hydroxyl radical production activity, leading to it possessing better electrocatalytic properties. The above results indicated that the physicochemical and electrochemical characterization of the PbO2 electrode were all enhanced significantly with the introduction of Ti3+ and SDS. Furthermore, the Ti/B-TiO2-NTs/PbO2-SDS electrodes displayed the best performance on the degradation of methylene blue (MB) in simulated wastewater via bulk electrolysis. The removal efficiency of MB and the chemical oxygen demand (COD) could reach about 99.7% and 80.6% under the optimal conditions after 120 min, respectively. The pseudo-first-order kinetic constant of the Ti/B-TiO2-NTs/PbO2-SDS electrode was 0.03956 min-1, which was approximately 3.18 times faster than that of the Ti/TiO2-NTs/PbO2 electrode (0.01254 min-1). In addition, the Ti/B-TiO2-NTs/PbO2-SDS electrodes showed excellent stability and reusability. The degradation mechanism of MB was explored via the experimental identification of intermediates. In summary, the Ti3+ self-doping black Ti/TiO2-NTs/PbO2-SDS electrode is a promising electrode in treating wastewater.
Collapse
Affiliation(s)
- Mai Xu
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| | - Chunli Gao
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China;
| | - Xiaoyan Zhang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| | - Xian Liang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| | - Yunhu Hu
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| | - Fengwu Wang
- School of Chemistry and Material Engineering, Huainan Normal University, Huainan 232038, China; (M.X.); (X.Z.); (X.L.)
| |
Collapse
|
4
|
Muteeb G. Nanotechnology-A Light of Hope for Combating Antibiotic Resistance. Microorganisms 2023; 11:1489. [PMID: 37374990 DOI: 10.3390/microorganisms11061489] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
Antibiotic usage and resistance are major health concerns. Antibiotic resistance occurs when bacteria evolve to resist the effects of antibiotics, making it impossible to treat infections. The overuse and misuse of antibiotics are the main contributing factors, while environmental stress (such as heavy metals accumulation), unhygienic conditions, illiteracy, and unawareness also contribute to antibiotic resistance. The slow and costly development of new antibiotics has lagged behind the emergence of antibiotic-resistant bacteria, and the overuse of antibiotics leads to negative consequences. The current study used different literature resources to generate an opinion and find a possible solution to antibiotic barriers. Different scientific approaches have been reported to overcome antibiotic resistance. The most useful approach among these is nanotechnology. Nanoparticles can be engineered to disrupt bacterial cell walls or membranes, effectively eliminating resistant strains. Additionally, nanoscale devices enable the real-time monitoring of bacterial populations, allowing for the early detection of resistance emergence. Nanotechnology, along with evolutionary theory offers promising avenues in combating antibiotic resistance. Evolutionary theory helps us understand the mechanisms by which bacteria develop resistance, allowing us to anticipate and counteract their adaptive strategies. By studying the selective pressures that drive resistance, we can therefore design more effective interventions or traps. The synergy between the evolutionary theory and nanotechnology presents a powerful approach to combat antibiotic resistance, offering new avenues for the development of effective treatments and the preservation of our antibiotic arsenal.
Collapse
Affiliation(s)
- Ghazala Muteeb
- Department of Nursing, College of Applied Medical Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| |
Collapse
|
5
|
Chen D, Zhao L, Chen D, Hou P, Liu J, Wang C, Aborisade MA, Yin M, Yang Y. Fabrication of a SnO 2-Sb electrode with TiO 2 nanotube array as the middle layer for efficient electrochemical oxidation of amaranth dye. CHEMOSPHERE 2023; 325:138380. [PMID: 36907492 DOI: 10.1016/j.chemosphere.2023.138380] [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: 12/15/2022] [Revised: 03/09/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Abstract
Efficient, stable, and easily producible electrodes are useful for treating dye wastewater through electrochemical oxidation. In this study, an Sb-doped SnO2 electrode with TiO2 nanotubes as the middle layer (TiO2-NTs/SnO2-Sb) was prepared through an optimized electrodeposition process. Analyses of the coating morphology, crystal structure, chemical state, and electrochemical properties revealed that tightly packed TiO2 clusters provided a larger surface area and more contact points, which is conducive to reinforcing the binding of SnO2-Sb coatings. Compared with a Ti/SnO2-Sb electrode without a TiO2-NT interlayer, the catalytic activity and stability of the TiO2-NTs/SnO2-Sb electrode significantly improved (P < 0.05), as reflected by the 21.8% increase in the amaranth dye decolorization efficiency and 200% increase in the service life. The effects of current density, pH, electrolyte concentration, initial amaranth concentration, and the interaction between various combinations of parameters on the electrolysis performance were investigated. Based on response surface optimization, the maximum decolorization efficiency of the amaranth dye could reach 96.2% within 120 min under the following set of optimized parameter values: 50 mg L-1 amaranth concentration, 20 mA cm-2 current density, and 5.0 pH. A potential degradation mechanism of the amaranth dye was proposed based on the experimental results of a quenching test, ultraviolet-visible spectroscopy, and high-performance liquid chromatography-mass spectrometry. This study provides a more sustainable method for fabricating SnO2-Sb electrodes with TiO2-NT interlayers to treat refractory dye wastewater.
Collapse
Affiliation(s)
- Daying Chen
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, PR China
| | - Lin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, PR China; Tianjin Engineering Center for Technology of Protection and Function Construction of Ecological Critical Zone, Tianjin, 300350, PR China
| | - Danning Chen
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, PR China; GreenLand Environmental Technology Co., LTD, Tianjin, 300193, PR China
| | - Pengfei Hou
- Beijing Engineering Research Center of Environmental Material for Water Purification, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, PR China
| | - Jiashu Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, PR China
| | - Chuanbin Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, PR China
| | | | - Meilin Yin
- School of Chemical Engineering, Tianjin University, Tianjin, 300072, PR China
| | - Yongkui Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, PR China; Tianjin Engineering Center for Technology of Protection and Function Construction of Ecological Critical Zone, Tianjin, 300350, PR China.
| |
Collapse
|
6
|
Nguyen Tien H, Mwazighe F. Preparation of Ti/SnO 2-Sb/La-βPbO 2 electrode and its application in the degradation of some pollutants including prednisolone and 8-Hydroxyquinoline. CHEMOSPHERE 2023; 333:138933. [PMID: 37187380 DOI: 10.1016/j.chemosphere.2023.138933] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/31/2023] [Accepted: 05/11/2023] [Indexed: 05/17/2023]
Abstract
In this work, a novel La-doped βPbO2 (Ti/SnO2-Sb/La-βPbO2) was prepared using electrodeposition method and applied to the degradation of prednisolone (PRD), 8-Hydroxyquinoline (8-HQ), and other typical organic pollutants. Compared with the conventional electrode Ti/SnO2-Sb/βPbO2, La2O3 doping enhanced oxygen evolution potential (OEP), reactive surface area, stability and repeatability of the electrode. The 10 g L-1 of La2O3 doping exhibited the highest electrochemical oxidation capability of the electrode with [•OH]ss being determined at 5.6 × 10-13 M. The quenching experiments were conducted to confirm the main oxidizing species (here: •OH) in the electrochemical process. The study showed that the pollutants were removed in the electrochemical (EC) process with different degradation rates and indicated that the second-order rate constant of organic pollutants towards •OH (kOP,•OH) has a linear relationship with the degradation rate of organic pollutants (kOP) in the electrochemical process. Another new finding in this work is that a regression line of kOP,•OH and kOP can be used to estimate kOP,•OH of an organic chemical, which cannot be determined using the competition method. kPRD,•OH and k8-HQ,•OH were determined to be 7.4 × 109 M-1 s-1 and (4.6-5.5) × 109 M-1 s-1, respectively. Compared with conventional supporting electrolyte (like SO42-), H2PO4- and HPO42- improved kPRD and k8-HQ by 1.3-1.6-fold, while SO32- and HCO3- inhibited kPRD and k8-HQ significantly, down to 80%. Additionally, the degradation pathway of 8-HQ was proposed based on the detection of intermediates from GC-MS.
Collapse
Affiliation(s)
- Hoang Nguyen Tien
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang st., Lien Chieu, Da Nang, 550000, Viet Nam; The University of Da Nang, Environmental Protection and Research Center, 54 Nguyen Luong Bang st., Da Nang, 550000, Viet Nam.
| | - Fredrick Mwazighe
- Department of Chemistry, Faculty of Science and Technology, University of Nairobi, P. O. Box 30197, 00100, Nairobi, Kenya
| |
Collapse
|
7
|
Wang X, Wang L, Wu D, Yuan D, Ge H, Wu X. PbO 2 materials for electrochemical environmental engineering: A review on synthesis and applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 855:158880. [PMID: 36130629 DOI: 10.1016/j.scitotenv.2022.158880] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/21/2022] [Accepted: 09/16/2022] [Indexed: 06/15/2023]
Abstract
Lead dioxide (PbO2) materials have been widely employed in various fields such as batteries, electrochemical engineering, and more recently environmental engineering as anode materials, due to their unique physicochemical properties. Key performances of PbO2 electrodes, such as energy efficiency and space-time yield, are influenced by morphological as well as compositional factors. Micro-nano structure regulation and decoration of metal/non-metal on PbO2 is an outstanding technique to revamp its electrocatalytic activities and enhance environmental engineering efficiency. The aim of this review is to comprehensively summarize the recent research progress in the morphology control, the structure constructions, and the element doping of PbO2 materials, further with many environmental application cases evaluated. Concerning electrochemical environmental engineering, the lead dioxide employed in chemical oxygen demand detection, ozone generators, and wastewater treatment has been comprehensively reviewed. In addition, the future research perspectives, challenges and the opportunities on PbO2 materials for environmental applications are proposed.
Collapse
Affiliation(s)
- Xi Wang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Luyang Wang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Dandan Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Du Yuan
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Hang Ge
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xu Wu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| |
Collapse
|
8
|
Duan X, Wang Q, Ning Z, Tu S, Li Y, Sun C, Zhao X, Chang L. Fabrication and Characterization of PEG-In2O3 Modified PbO2 Anode for Electrochemical Degradation of Metronidazole. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
9
|
Falyouna O, Maamoun I, Ghosh S, Malloum A, Othmani A, Eljamal O, Amen TW, Oroke A, Bornman C, Ahmadi S, Hadi Dehghani M, Hossein Mahvi A, Nasseri S, Tyagi I, Suhas, Reddy Koduru J. Sustainable Technologies for the Removal of Chloramphenicol from Pharmaceutical Industries Effluent: A critical review. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
10
|
Barroso-Martínez J, B. Romo AI, Pudar S, Putnam ST, Bustos E, Rodríguez-López J. Real-Time Detection of Hydroxyl Radical Generated at Operating Electrodes via Redox-Active Adduct Formation Using Scanning Electrochemical Microscopy. J Am Chem Soc 2022; 144:18896-18907. [PMID: 36215201 PMCID: PMC9586107 DOI: 10.1021/jacs.2c06278] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Indexed: 11/30/2022]
Abstract
The hydroxyl radical (•OH) is one of the most attractive reactive oxygen species due to its high oxidation power and its clean (photo)(electro)generation from water, leaving no residues and creating new prospects for efficient wastewater treatment and electrosynthesis. Unfortunately, in situ detection of •OH is challenging due to its short lifetime (few ns). Using lifetime-extending spin traps, such as 5,5-dimethyl-1-pyrroline N-oxide (DMPO) to generate the [DMPO-OH]• adduct in combination with electron spin resonance (ESR), allows unambiguous determination of its presence in solution. However, this method is cumbersome and lacks the necessary sensitivity and versatility to explore and quantify •OH generation dynamics at electrode surfaces in real time. Here, we identify that [DMPO-OH]• is redox-active with E0 = 0.85 V vs Ag|AgCl and can be conveniently detected on Au and C ultramicroelectrodes. Using scanning electrochemical microscopy (SECM), a four-electrode technique capable of collecting the freshly generated [DMPO-OH]• from near the electrode surface, we detected its generation in real time from operating electrodes. We also generated images of [DMPO-OH]• production and estimated and compared its generation efficiency at various electrodes (boron-doped diamond, tin oxide, titanium foil, glassy carbon, platinum, and lead oxide). Density functional calculations, ESR measurements, and bulk calibration using the Fenton reaction helped us unambiguously identify [DMPO-OH]• as the source of redox activity. We hope these findings will encourage the rapid, inexpensive, and quantitative detection of •OH for conducting informed explorations of its role in mediated oxidation processes at electrode surfaces for energy, environmental, and synthetic applications.
Collapse
Affiliation(s)
- Jaxiry
S. Barroso-Martínez
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, 600 South Mathews Ave., Urbana, Illinois61801, United States
- Centro
de Investigación y Desarrollo Tecnológico en Electroquímica,
S.C. Parque Tecnológico Querétaro, Sanfandila, Pedro Escobedo, 76703Querétaro, Mexico
| | - Adolfo I. B. Romo
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, 600 South Mathews Ave., Urbana, Illinois61801, United States
| | - Sanja Pudar
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, 600 South Mathews Ave., Urbana, Illinois61801, United States
| | - Seth T. Putnam
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, 600 South Mathews Ave., Urbana, Illinois61801, United States
| | - Erika Bustos
- Centro
de Investigación y Desarrollo Tecnológico en Electroquímica,
S.C. Parque Tecnológico Querétaro, Sanfandila, Pedro Escobedo, 76703Querétaro, Mexico
| | - Joaquín Rodríguez-López
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, 600 South Mathews Ave., Urbana, Illinois61801, United States
| |
Collapse
|
11
|
Man S, Luo D, Sun Q, Yang H, Bao H, Xu K, Zeng X, He M, Yin Z, Wang L, Mo Z, Yang W, Li X. When MXene (Ti 3C 2T x) meet Ti/PbO 2: An improved electrocatalytic activity and stability. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128440. [PMID: 35158250 DOI: 10.1016/j.jhazmat.2022.128440] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/17/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
Stable electrode materials with high catalytic activity are urgently required for electrochemical degradation of refractory organic pollutants in wastewater treatment. Herein, high conductive MXene (Ti3C2Tx) was firstly fabricated by electrophoretic deposition (EPD) as an interlayer for preparing a novel PbO2 electrode. The well-conducted Ti3C2Tx interlayer significantly improved the electrochemical performance of the EPD-2.0/PbO2 (EPD time was 2.0 min) electrode with the charge transfer resistance decreased by 9.51 times, the inner active sites increased by 5.21 times and the ∙OH radicals generation ability enhanced by 4.07 times than the control EPD-0/PbO2 anode. Consequently, the EPD-2.0/PbO2 electrode achieved nearly 100% basic fuchsin (BF) and 86.78% COD removal efficiency after 3.0 h electrolysis. Therefore, this new PbO2 electrode presented a promising potential for electrochemical degradation of BF and the new Ti3C2Tx middle layer could also be used to fabricate other efficient and stable anodes, such as SnO2, MnO2, TiO2, etc.
Collapse
Affiliation(s)
- Shuaishuai Man
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Dehui Luo
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Qing Sun
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Haifeng Yang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Hebin Bao
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China; Fundamental Studies department, Army logistics University of PLA, Chongqing 401311, PR China
| | - Ke Xu
- Multiscale Crystal Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, PR China
| | - Xuzhong Zeng
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Miao He
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Zehao Yin
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Li Wang
- College of Power Engineering, Chongqing Electric Power College, Chongqing 400053, PR China
| | - Zhihong Mo
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China
| | - Wenjing Yang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China.
| | - Xueming Li
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, PR China.
| |
Collapse
|
12
|
Wang X, Wang J, Yu B, Jiang W, Wei J, Chen B, Xu R, Yang L. Facile synthesis MnCo 2O 4.5@C nanospheres modifying PbO 2 energy-saving electrode for zinc electrowinning. JOURNAL OF HAZARDOUS MATERIALS 2022; 428:128212. [PMID: 35030491 DOI: 10.1016/j.jhazmat.2021.128212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 12/31/2021] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
The oxygen evolution reaction kinetics in industrial zinc electrowinning is sluggish, resulting in low electrocatalytic activity and substantial energy expenditure (about one-third of energy was wasted due to the strong polarization effect). Herein, the paper described a core-shell structured MnCo2O4.5@C modified PbO2 electrode through the pyrolysis and co-electrodeposition as a promising candidate for zinc electrowinning. As a result, the obtained Pb-0.2%Ag/α-PbO2/β-PbO2-MnCo2O4.5@C composite electrode showed a sandwich-like structure, where Pb-0.2%Ag as a core, α-PbO2 as a mid-layer, and β-PbO2-MnCo2O4.5@C served as an electrocatalytic layer. It also possessed improved OER catalytic activity, only required 680 mV to achieve a current density of 50 mA cm-2 and a Tafel slope of 216.04 mV dec-1 in an acidic solution containing 50 g L-1 Zn2+ and 150 g L-1 H2SO4. The current efficiency increased by 0.7% and the cell voltage reduced by 360 mV as compared to a conventional Pb-0.76%Ag alloy electrode, leading to a remarkable energy-consumption reduction of 283.5 kW h for producing per ton metallic zinc. Furthermore, Pb-0.2%Ag/α-PbO2/β-PbO2-MnCo2O4.5@C exhibited a prolonged service life, which worked about 44 h under an ultra-high current density of 2 A cm-2. Hence, this paper provides the strategy to design and construct non-precious, high-performance catalyst for electrolysis and other applications.
Collapse
Affiliation(s)
- Xuanbing Wang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Junli Wang
- Researcher Centers for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, China
| | - Bohao Yu
- School of Mathematics, Yunnan Normal University, Kunming 650500, China
| | - Wenhao Jiang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Jinlong Wei
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Buming Chen
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China; Kunming Hendera Science and Technology Co., Ltd., Kunming 650106, China
| | - Ruidong Xu
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
| | - Linjing Yang
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China; Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China.
| |
Collapse
|
13
|
Fu Y, Zhang A, Guo T, Zhu Y, Shao Y. Biochar and Hyperthermophiles as Additives Accelerate the Removal of Antibiotic Resistance Genes and Mobile Genetic Elements during Composting. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5428. [PMID: 34576653 PMCID: PMC8465662 DOI: 10.3390/ma14185428] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/08/2021] [Accepted: 09/15/2021] [Indexed: 11/16/2022]
Abstract
Sewage treatment plants are known as repositories of antibiotic resistance genes (ARGs). Adding biochar and inoculating with exogenous microbial agents are common ways to improve the quality of compost. However, little is known about the effects of these exogenous additives on the fate of ARGs during composting and the related mechanisms. In this study, municipal sludge was taken as the research object to study the ARG-removal effects of four composting methods: ordinary compost (CT), compost with hyperthermophiles (HT), compost with hyperthermophiles and 2.0% biochar (HT2C) and compost with hyperthermophiles and 5.0% biochar (HT5C). Real-time quantitative PCR (qPCR) and 16S rRNA high-throughput sequencing were conducted to analyze the ARGs, MGEs and bacterial community. After composting, the abundance of ARGs in CT was reduced by 72.7%, while HT, HT2C and HT5C were reduced by 80.7%, 84.3% and 84.8%, respectively. Treatments with different proportions of biochar added (HT2C, HT5C) had no significant effect on the abundance of ARGs. Network analysis showed that Firmicutes and Nitrospirae were positively associated with most ARGs and may be potential hosts for them. In addition, redundancy analysis further showed that the class 1 integrase gene (intI1), pH and organic carbon had a greater effect on ARGs. Our findings suggested that the combination of hyperthermophiles and biochar during the composting process was an effective way to control ARGs and mobile genetic elements (MGEs), thus inhibiting the spread and diffusion of ARGs in the environment and improving the efficiency of treating human and animal diseases.
Collapse
Affiliation(s)
| | | | | | - Ying Zhu
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; (Y.F.); (A.Z.); (T.G.)
| | - Yanqiu Shao
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China; (Y.F.); (A.Z.); (T.G.)
| |
Collapse
|