1
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Wu L, Guo J, Chen Y, Ye YX, Tong YJ, Zhu F, Xu J, Ouyang G. Rapid analysis of dichlorvos via releasing the phosphate core. Talanta 2024; 269:125404. [PMID: 37980819 DOI: 10.1016/j.talanta.2023.125404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/04/2023] [Accepted: 11/09/2023] [Indexed: 11/21/2023]
Abstract
Monitoring the residual dichlorvos (O,O-dimethyl-O-2,2-dichlorovinylphosphate, DDVP) in food has received extensive attention owing to its large consumption in agriculture. However, the previous sensing methods are not time-efficient enough due to the long incubation time for enzyme inhibition (tens of minutes to hours) or bottlenecked by the complicated procedures for senor fabrication. Herein, a novel sensing strategy is proposed based on the hydrolysis of DDVP into PO43-. By using alkaline phosphatase for hydrolysis, a certain portion of DDVP was transformed to PO43- within only 8 min. Then, the released PO43- was detected by a fluorescent terbium metal-organic framework (Tb-MOF). The coordination of the naked P-O groups to the metal nodes of the Tb-MOF disturbed the antenna effects of its ligands. Thus, DDVP was quantified by the decrease of the fluorescence of Tb ions. Based on this method, DDVP residues on plum surfaces were collected by swabs and successfully detected. The recovery of DDVP was determined in the range from 105 % to 115 %, demonstrating the quantification accuracy of this method. The detection limit reached 4.7 μM, which was lower than the restricted amount in fruit set by the National Standard of China. The present method provides an efficient and user-friendly way for the detection of DDVP and many other organophosphorus pesticides in food.
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Affiliation(s)
- Lihua Wu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jing Guo
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yuxin Chen
- Instrumental Analysis & Research Center, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yu-Xin Ye
- School of Chemical Engineering and Technology, IGCME, Sun Yat-sen University, Zhuhai, Guangdong, 519082, China
| | - Yuan-Jun Tong
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, China.
| | - Fang Zhu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jianqiao Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China.
| | - Gangfeng Ouyang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry/KLGHEI of Environment and Energy Chemistry, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
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2
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Dong R, Bai L, Liang S, Xu S, Gao S, Li H, Hong R, Wang C, Gu C. Self-Assembled Fe III-TAML-Based Magnetic Nanostructures for Rapid and Sustainable Destruction of Bisphenol A. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2024; 112:30. [PMID: 38281179 DOI: 10.1007/s00128-023-03834-1] [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: 09/28/2023] [Accepted: 11/09/2023] [Indexed: 01/30/2024]
Abstract
This study focused on constructing iron(III)-tetraamidomacrocyclic ligand (FeIII-TAML)-based magnetic nanostructures via a surfactant-assisted self-assembly (SAS) method to enhance the reactivity and recoverability of FeIII-TAML activators, which have been widely employed to degrade various organic contaminants. We have fabricated FeIII-TAML-based magnetic nanomaterials (FeIII-TAML/CTAB@Fe3O4, CTAB refers to cetyltrimethylammonium bromide) by adding a mixed solution of FeIII-TAML and NH3·H2O into another mixture containing CTAB, FeCl2 and FeCl3 solutions. The as-prepared FeIII-TAML/CTAB@Fe3O4 nanocomposite showed relative reactivity compared with free FeIII-TAML as indicated by decomposition of bisphenol A (BPA). Moreover, our results demonstrated that the FeIII-TAML/CTAB@Fe3O4 composite can be separated directly from reaction solutions by magnet adsorption and reused for at least four times. Therefore, the efficiency and recyclability of self-assembled FeIII-TAML/CTAB@Fe3O4 nanostructures will enable the application of FeIII-TAML-based materials with a lowered expense for environmental implication.
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Affiliation(s)
- Ruochen Dong
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Lihua Bai
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Sijia Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Shuxia Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Song Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Hongjian Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China
| | - Ran Hong
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, Wuhu, 241000, People's Republic of China.
| | - Chao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China.
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, Jiangsu Environmental Engineering Technology Co., Ltd, Nanjing, 210019, People's Republic of China.
| | - Cheng Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, People's Republic of China
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3
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Roshani M, Nematollahi D, Ansari A, Adib K, Masoudi-Khoram M. Boosted electrocatalytic oxidation of organophosphorus pesticides by a novel high-efficiency CeO 2-Doped PbO 2 anode: An electrochemical study, parameter optimization and degradation mechanisms. CHEMOSPHERE 2024; 346:140597. [PMID: 37925025 DOI: 10.1016/j.chemosphere.2023.140597] [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: 08/25/2023] [Revised: 10/28/2023] [Accepted: 10/30/2023] [Indexed: 11/06/2023]
Abstract
This article presents a novel and highly efficient electrocatalytic degradation method for two significant organophosphorus pesticides, fenitrothion (FEN), and methyl parathion (MPN), using a Ti/β-PbO2-CeO2 modified anode (indirect oxidation). A comprehensive electrochemical investigation was also carried out to gain new insight into the redox behavior and destruction pathway of these pesticides (direct oxidation). The study also explores the effects of various operating parameters, such as initial solution pH, applied current density, and initial pesticides concentration, on the conversion-paired electrocatalytic removal process. To further enhance the degradation efficiency, a new configuration of the electrochemical cell was designed, employing two types of electrodes and two independent power supply devices. The conversion paired electrocatalytic degradation process of these pesticides involves first the direct reduction of FEN (or MPN) on a graphite cathode and then the indirect oxidation of reduced FEN (or MPN) by hydroxyl radicals electro generated on the Ti/β-PbO2-CeO2 anode. The synergism of these two processes together will effectively lead to FEN (or MPN) degradation. The degradation percentages of 98% for FEN and 95% for MPN at the optimal conditions for the electrochemical degradation of these pesticides were achieved at pH = 7, initial concentration 50 mg L-1, with a current density of 90 mA cm-2 for direct reduction and 11 mA cm-2 for indirect oxidation. Overall, this study presents a promising and efficient approach for the remediation of organophosphorus pesticide-contaminated environments, offering valuable insights into the electrochemical degradation process and highlighting the potential for practical application in wastewater treatment and environmental protection.
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Affiliation(s)
- Mahsa Roshani
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65178-38683, Iran
| | - Davood Nematollahi
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65178-38683, Iran.
| | - Amin Ansari
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, 65178-38683, Iran.
| | - Koroush Adib
- Department of Chemistry, Imam Hossein University, Tehran, 1955735345, Iran
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4
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Mayer A, Nair M, Miskelly GM. Chemical decontamination of methamphetamine and ephedrine using Fe-TAML catalysed hydrogen peroxide oxidation. Forensic Chem 2023. [DOI: 10.1016/j.forc.2023.100490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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5
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Xie J, Xie J, Miller CJ, Waite TD. Enhanced Direct Electron Transfer Mediated Contaminant Degradation by Fe(IV) Using a Carbon Black-Supported Fe(III)-TAML Suspension Electrode System. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:2557-2565. [PMID: 36725204 DOI: 10.1021/acs.est.2c08467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Iron complexes of tetra-amido macrocyclic ligands (Fe-TAML) are recognized to be effective catalysts for the degradation of a wide range of organic contaminants in homogeneous conditions with the high valent Fe(IV) and Fe(V) species generated on activation of the Fe-TAML complex by hydrogen peroxide (H2O2) recognized to be powerful oxidants. Electrochemical activation of Fe-TAML would appear an attractive alternative to H2O2 activation, especially if the Fe-TAML complex could be attached to the anode, as this would enable formation of high valent iron species at the anode and, importantly, retention of the valuable Fe-TAML complex within the reaction system. In this work, we affix Fe-TAML to the surface of carbon black particles and apply this "suspension anode" process to oxidize selected target compounds via generation of high valent iron species. We show that the overpotential for Fe(IV) formation is 0.17 V lower than the potential required to generate Fe(IV) electrochemically in homogeneous solution and also show that the stability of the Fe(IV) species is enhanced considerably compared to the homogeneous Fe-TAML case. Application of the carbon black-supported Fe-TAML suspension anode reactor to degradation of oxalate and hydroquinone with an initial pH value of 3 resulted in oxidation rate constants that were up to three times higher than could be achieved by anodic oxidation in the absence of Fe-TAML and at energy consumptions per order of removal substantially lower than could be achieved by alternate technologies.
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Affiliation(s)
- Jiangzhou Xie
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW2052, Australia
- UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu Province, 214206, P.R. China
| | - Jieli Xie
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW2052, Australia
| | - Christopher J Miller
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW2052, Australia
| | - T David Waite
- UNSW Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW2052, Australia
- UNSW Centre for Transformational Environmental Technologies, Yixing, Jiangsu Province, 214206, P.R. China
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6
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Shao B, Dong H, Zhou G, Ma J, Sharma VK, Guan X. Degradation of Organic Contaminants by Reactive Iron/Manganese Species: Progress and Challenges. WATER RESEARCH 2022; 221:118765. [PMID: 35749920 DOI: 10.1016/j.watres.2022.118765] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 04/06/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Many iron(II, III, VI)- and manganese(II, IV, VII)-based oxidation processes can generate reactive iron/manganese species (RFeS/RMnS, i.e., Fe(IV)/Fe(V) and Mn(III)/Mn(V)/Mn(VI)), which have mild and selective reactivity toward a wide range of organic contaminants, and thus have drawn significant attention. The reaction mechanisms of these processes are rather complicated due to the simultaneous involvement of multiple radical and/or nonradical species. As a result, the ambiguity in the occurrence of RFeS/RMnS and divergence in the degradation mechanisms of trace organic contaminants in the presence of RFeS/RMnS exist in literature. In order to improve the critical understanding of the RFeS/RMnS-mediated oxidation processes, the detection methods of RFeS/RMnS and their roles in the destruction of trace organic contaminants are reviewed with special attention to some specific problems related to the scavenger and probe selection and experimental results analysis potentially resulting in some questionable conclusions. Moreover, the influence of background constituents, such as organic matter and halides, on oxidation efficiency of RFeS/RMnS-mediated oxidation processes and formation of byproducts are discussed through their comparison with those in free radicals-dominated oxidation processes. Finally, the prospects of the RFeS/RMnS-mediated oxidation processes and the challenges for future applications are presented.
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Affiliation(s)
- Binbin Shao
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
| | - Hongyu Dong
- Department of Environmental Science, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, China
| | - Gongming Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
| | - Jun Ma
- State Key Lab of Urban Water Resource and Environment (HIT), School of Environment, Harbin Institute of Technology, Harbin, PR China
| | - Virender K Sharma
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, Texas, 77843, United States
| | - Xiaohong Guan
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China.
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7
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Zhou A, Fu Z, Cao X, Zhao Y, Wang Y. A mechanistic switch in C−H bond activation by elusive Fe V(O)(TAML) reaction intermediate: A theoretical study. CHINESE J CHEM PHYS 2022. [DOI: 10.1063/1674-0068/cjcp2111230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
The divergent behavior of C−H bond oxidations of aliphatic substrates compared to those of aromatic substrates shown in Gupta's experiment was mechanistically studied herein by means of density functional theory calculations. Our calculations reveal that such difference is caused by different reaction mechanisms between two kinds of substrates (the aliphatic cyclohexane, 2,3-dimethylbutane and the aromatic toluene, ethylbenzene and cumene). For the aliphatic substrates, C−H oxidation by the oxidant FeV(O)(TAML) is a hydrogen atom transfer process; whereas for the aromatic substrates, C−H oxidation is a proton-coupled electron transfer (PCET) process with a proton transfer character on the transition state, that is, a proton-coupled electron transfer process holding a proton transfer-like transition state (PCET(PT)). This difference is caused by the strong π− π interactions between the tetra-anionic TAML ring and the phenyl ring of the aromatic substrates, which has a “pull” effect to make the electron transfer from substrates to the Fe=O moiety inefficient.
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Affiliation(s)
- Anran Zhou
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
- Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, China
| | - Zhiqiang Fu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Xuanyu Cao
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
- Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, China
| | - Yufen Zhao
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
- Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, China
| | - Yong Wang
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
- Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, China
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8
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Qin Y, Ye G, Liang H, Li M, Zhao J. An amplified fluorescence polarization assay for sensitive sensing of organophosphorus pesticides via MnO 2 nanosheets. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 269:120759. [PMID: 34968836 DOI: 10.1016/j.saa.2021.120759] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/07/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
It is highly desirable to develop a simple, efficient and sensitive strategy for organophosphorus pesticides (OPs) in both environment pollution and human health. Herein, a novel amplified fluorescence polarization (FP) biosensor was established for highly sensitive detection of OPs using MnO2 nanosheets as the signal enhancer. In this system, OPs can suppress the activity of acetylcholinesterase (AChE) efficiently, blocking the hydrolysis reaction of acetylthiocholine (ATCh) to generate thiocholine (TCh) by AChE. TCh can lead the decomposition of MnO2 nanosheets to manganese ions. So, without the influence of TCh, MnO2 nanosheets can maintain its original shape and form a stable complex with FAM-DNA, which greatly enhanced the FP signal. This method can tremendously improve the sensitivity of FP with a detection limit of 0.01 ng/mL for diazinon. In addition, it was also applicable to determine other four OPs and investigate the level of diazinon in real water samples. Consequently, the proposed approach provides a new promising platform for detection of OPs and is expected to be used in application of environmental monitoring.
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Affiliation(s)
- Yingfeng Qin
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, PR China; Guangxi Key Laboratory of Bioactive Molecular Research and Evaluation, School of Basic Medical Sciences & Pharmaceutical College, Guangxi Medical University, Nanning 530021, PR China
| | - Gaojie Ye
- Guangxi Key Laboratory of Bioactive Molecular Research and Evaluation, School of Basic Medical Sciences & Pharmaceutical College, Guangxi Medical University, Nanning 530021, PR China
| | - Hao Liang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, PR China
| | - Ming Li
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, PR China
| | - Jingjin Zhao
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, PR China
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9
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Wegeberg C, Skavenborg ML, Liberato A, McPherson JN, Browne WR, Hedegård ED, McKenzie CJ. Engineering the Oxidative Potency of Non-Heme Iron(IV) Oxo Complexes in Water for C-H Oxidation by a cis Donor and Variation of the Second Coordination Sphere. Inorg Chem 2021; 60:1975-1984. [PMID: 33470794 DOI: 10.1021/acs.inorgchem.0c03441] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A series of iron(IV) oxo complexes, which differ in the donor (CH2py or CH2COO-) cis to the oxo group, three with hemilabile pendant donor/second coordination sphere base/acid arms (pyH/py or ROH), have been prepared in water at pH 2 and 7. The νFe═O values of 832 ± 2 cm-1 indicate similar FeIV═O bond strengths; however, different reactivities toward C-H substrates in water are observed. HAT occurs at rates that differ by 1 order of magnitude with nonclassical KIEs (kH/kD = 30-66) consistent with hydrogen atom tunneling. Higher KIEs correlate with faster reaction rates as well as a greater thermodynamic stability of the iron(III) resting states. A doubling in rate from pH 7 to pH 2 for substrate C-H oxidation by the most potent complex, that with a cis-carboxylate donor, [FeIVO(Htpena)]2+, is observed. Supramolecular assistance by the first and second coordination spheres in activating the substrate is proposed. The lifetime of this complex in the absence of a C-H substrate is the shortest (at pH 2, 3 h vs up to 1.3 days for the most stable complex), implying that slow water oxidation is a competing background reaction. The iron(IV)═O complex bearing an alcohol moiety in the second coordination sphere displays significantly shorter lifetimes due to a competing selective intramolecular oxidation of the ligand.
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Affiliation(s)
- Christina Wegeberg
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.,Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, Faculty of Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Mathias L Skavenborg
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.,Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, New South Wales, Australia
| | - Andrea Liberato
- Universidad de Cádiz, Facultad de Ciencias, Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Puerto Real, Cádiz 11510, Spain
| | - James N McPherson
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Wesley R Browne
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, Faculty of Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Erik D Hedegård
- Division of Theoretical Chemistry, Lund University, Naturvetarvägen 14, 221 00 Lund, Sweden
| | - Christine J McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
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10
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Miller CJ, Chang Y, Wegeberg C, McKenzie CJ, Waite TD. Kinetic Analysis of H2O2 Activation by an Iron(III) Complex in Water Reveals a Nonhomolytic Generation Pathway to an Iron(IV)oxo Complex. ACS Catal 2021. [DOI: 10.1021/acscatal.0c02877] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Christopher J. Miller
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Yingyue Chang
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Christina Wegeberg
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Christine J. McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - T. David Waite
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia
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11
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Wiwasuku T, Boonmak J, Burakham R, Hadsadee S, Jungsuttiwong S, Bureekaew S, Promarak V, Youngme S. Turn-on fluorescent probe towards glyphosate and Cr3+ based on Cd(ii)-metal organic framework with Lewis basic sites. Inorg Chem Front 2021. [DOI: 10.1039/d0qi00947d] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Lewis basic site-functionalized porous Cd(ii)-MOF as a bi-functional fluorescent sensor of glyphosate and Cr3+ with exceptional LODs.
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Affiliation(s)
- Theanchai Wiwasuku
- Materials Chemistry Research Centre
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry
- Faculty of Science
- Khon Kaen University
- Khon Kaen
| | - Jaursup Boonmak
- Materials Chemistry Research Centre
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry
- Faculty of Science
- Khon Kaen University
- Khon Kaen
| | - Rodjana Burakham
- Materials Chemistry Research Centre
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry
- Faculty of Science
- Khon Kaen University
- Khon Kaen
| | - Sarinya Hadsadee
- Center for Organic
- Electronic
- and Alternative Energy
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
| | - Siriporn Jungsuttiwong
- Center for Organic
- Electronic
- and Alternative Energy
- Department of Chemistry and Center of Excellence for Innovation in Chemistry
- Faculty of Science
| | - Sareeya Bureekaew
- School of Energy Science and Engineering
- Vidyasirimedhi Institute of Science and Technology (VISTEC)
- Rayong
- Thailand
| | - Vinich Promarak
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology
- Wangchan
- Rayong
- Thailand
| | - Sujittra Youngme
- Materials Chemistry Research Centre
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry
- Faculty of Science
- Khon Kaen University
- Khon Kaen
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12
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Xian Z, Liang S, Jin X, Tian H, Ling J, Wang C. Application of Fe III-TAML/H 2O 2 system for treatment of fluoroquinolone antibiotics. J Environ Sci (China) 2021; 99:110-118. [PMID: 33183688 DOI: 10.1016/j.jes.2020.06.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/03/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
Over the recent past, fluoroquinolone antibiotics (FQs) have raised extensive attention due to their potential to induce the formation of resistance genes and "superbugs", thus various advanced oxidation techniques have been developed to eliminate their release into the environment. In the present study, the prototype tetraamido macrocyclic ligand (FeIII-TAML)/hydrogen peroxide (H2O2) system is employed to degrade FQs (i.e., norfloxacin and ciprofloxacin) over a wide pH range (i.e., pH 6-10), and the reaction rate increases with the increase in pH level. The effect of dosage of FeIII-TAML and H2O2 on the degradation of FQs is evaluated, and the reaction rate is linearly correlated with the added amount of chemicals. Moreover, the impact of natural organic matters (NOM) on the removal of FQs is investigated, and the degradation kinetics show that both NOM type and experimental concentration exhibit negligible influence on the oxidative degradation of selected antibiotics. Based on the results of liquid chromatography-high resolution mass spectrometry and theoretical calculations, the reaction sites and pathways of FQs by FeIII-TAML/H2O2 system are further predicted and elucidated.
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Affiliation(s)
- Zeyu Xian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Sijia Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Xin Jin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Haoting Tian
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resource and Environment, Linyi University, Linyi 276005, China.
| | - Jingyi Ling
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Chao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
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Liang S, Xian Z, Yang H, Wang Z, Wang C, Shi X, Tian H. Rapid destruction of triclosan by Iron(III)-Tetraamidomacrocyclic ligand/hydrogen peroxide system. CHEMOSPHERE 2020; 261:127704. [PMID: 32721690 DOI: 10.1016/j.chemosphere.2020.127704] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/16/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
Iron(III)-tetraamidomacrocyclic ligand (Fe(III)-TAML) activators can activate hydrogen peroxide to oxidize many kinds of organic pollutants. In this study, we investigated the degradation of triclosan, a widely used broad-spectrum bactericide, under the treatment of Fe(III)-TAML/H2O2 system at different pH conditions. We also studied the influence of natural organic matter (NOM) on the degradation process. Our results showed that complete removal of triclosan could be obtained within several minutes under the optimal conditions. The degradation of triclosan by Fe(III)-TAML/H2O2 system exhibited strong pH-dependence and the degradation rate increased with the increase in pH level from 7.0 to 10.0. When adding fulvic acid (FA) or humic acid (HA) in the reaction system, the degradation of triclosan could be suppressed slightly, and HA exhibited stronger inhibition than FA. Based on the analysis of reaction intermediates, phenoxyl radical reaction and ring open reaction were involved in the decomposition of triclosan. Significant inhibition of overall toxicity to Photobacterium phosphoreum further confirmed the high efficiency of Fe(III)-TAML/H2O2 system for the removal of antibiotic activities resulting from the parent triclosan molecule and its degradation products.
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Affiliation(s)
- Sijia Liang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Zeyu Xian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Haotian Yang
- Springside Chestnut Hill Academy, 500 West Willow Grove Avenue, Philadelphia, PA, 19118, USA
| | - Ziyu Wang
- Jurong Country Garden School, Zhenjiang, 212400, PR China
| | - Chao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
| | - Xiaoxia Shi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Haoting Tian
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resource and Environment, Linyi University, Linyi, 276005, PR China.
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McNeice P, Reid A, Imam HT, McDonagh C, Walby JD, Collins TJ, Marr AC, Marr PC. Designing Materials for Aqueous Catalysis: Ionic Liquid Gel and Silica Sphere Entrapped Iron-TAML Catalysts for Oxidative Degradation of Dyes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:14026-14035. [PMID: 33103422 DOI: 10.1021/acs.est.0c04279] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Materials have been developed that encapsulate a homogeneous catalyst and enable it to operate as a heterogeneous catalyst in water. A hydrophobic ionic liquid within the material was used to dissolve Fe-TAML and keep it from leaching into the aqueous phase. One-pot processes were used to entrap Fe-TAML in basic ionic liquid gels, and ionic liquid gel spheres structured via a modified Stöber synthesis forming SiO2 particles of uniform size. Catalytic activity was demonstrated via the oxidative degradation of dyes. Fe-TAML entrapped in a basic ionic liquid gel exhibited consistent activity in five recycles. This discovery of heterogenized H2O2 activators prepared by sol-gel and Stöber processes opens new possibilities for the creation of engineered catalytic materials for water purification.
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Affiliation(s)
- Peter McNeice
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
- Queen's University Ionic Liquids Laboratories, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | - Andrew Reid
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | - Hasan T Imam
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
- Queen's University Ionic Liquids Laboratories, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | - Carol McDonagh
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | - Joel D Walby
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | - Terrence J Collins
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew C Marr
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
- Queen's University Ionic Liquids Laboratories, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | - Patricia C Marr
- School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
- Queen's University Ionic Liquids Laboratories, David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
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Wang Y, Maruthamuthu MK, Jeong J, Yoo IK, Kim TW, Hong SH. Development of fenitrothion adsorbing recombinant Escherichia coli by cell surface display of pesticide-binding peptide. J Biotechnol 2020; 322:90-95. [DOI: 10.1016/j.jbiotec.2020.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 06/15/2020] [Accepted: 07/19/2020] [Indexed: 11/16/2022]
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Wang C, Xian Z, Ding Y, Jin X, Gu C. Self-assembly of Fe III-TAML-based microstructures for rapid degradation of bisphenols. CHEMOSPHERE 2020; 256:127104. [PMID: 32470734 DOI: 10.1016/j.chemosphere.2020.127104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 05/14/2020] [Accepted: 05/15/2020] [Indexed: 06/11/2023]
Abstract
Iron(III)-tetraamidomacrocyclic ligand (FeIII-TAML) activators have drawn great attentions due to the high reactivity to degrade organic pollutants. However, previous studies showed that the reactivity and stability of FeIII-TAML were both strongly pH-dependent, which dramatically decrease at lower pH levels. Herein, FeIII-TAML/DODMA (dimethyldioctadecylammonium chloride) microspheres with diameters ranging from 100 to 2000 nm were synthesized via a surfactant-assisted self-assembly technique. The newly synthesized FeIII-TAML/DODMA composite exhibits superior reactivity compared to free FeIII-TAML as indicated by the degradation of bisphenols (i.e., bisphenol A and its analogues) over a wide pH range (i.e., pH 4.5-10.0). Based on the adsorption results and quantitative structure-activity relationship (QSAR) models, the enhanced reactivity of FeIII-TAML/DODMA is mainly ascribed to the hydrophobic sorption of bisphenols. Moreover, the enhanced ionization of the axial water molecule associated with FeIII-TAML could further enhance the reactivity of synthesized microcomposites, which was confirmed by the results of infrared and Raman spectra. Furthermore, FeIII-TAML/DODMA shows distinct acid-resistance as explained by the protection of the hydrophobic alkyl chains of DODMA. This novel method would provide a simple and effective strategy to expand the application of FeIII-TAML in a wide pH range and render FeIII-TAML/DODMA microstructure as a potential catalyst for treatment of bisphenol compounds.
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Affiliation(s)
- Chao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Zeyu Xian
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Yunhao Ding
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China
| | - Xin Jin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China; Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, PR China
| | - Cheng Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, PR China.
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Ebrahimi A, Nassireslami E, Zibaseresht R, Mohammadsalehi M. Ultra-fast catalytic detoxification of organophosphates by nano-zeolitic imidazolate frameworks. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.110965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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18
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Warner GR, Somasundar Y, Weng C, Akin MH, Ryabov AD, Collins TJ. Zero-Order Catalysis in TAML-Catalyzed Oxidation of Imidacloprid, a Neonicotinoid Pesticide. Chemistry 2020; 26:7631-7637. [PMID: 32187755 DOI: 10.1002/chem.202000384] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 03/17/2020] [Indexed: 02/02/2023]
Abstract
Bis-sulfonamide bis-amide TAML activator [Fe{4-NO2 C6 H3 -1,2-(NCOCMe2 NSO2 )2 CHMe}]- (2) catalyzes oxidative degradation of the oxidation-resistant neonicotinoid insecticide, imidacloprid (IMI), by H2 O2 at pH 7 and 25 °C, whereas the tetrakis-amide TAML [Fe{4-NO2 C6 H3 -1,2-(NCOCMe2 NCO)2 CF2 }]- (1), previously regarded as the most catalytically active TAML, is inactive under the same conditions. At ultra-low concentrations of both imidacloprid and 2, 62 % of the insecticide was oxidized in 2 h, at which time the catalyst is inactivated; oxidation resumes on addition of a succeeding aliquot of 2. Acetate and oxamate were detected by ion chromatography, suggesting deep oxidation of imidacloprid. Explored at concentrations [2]≥[IMI], the reaction kinetics revealed unusually low kinetic order in 2 (0.164±0.006), which is observed alongside the first order in imidacloprid and an ascending hyperbolic dependence in [H2 O2 ]. Actual independence of the reaction rate on the catalyst concentration is accounted for in terms of a reversible noncovalent binding between a substrate and a catalyst, which usually results in substrate inhibition when [catalyst]≪[substrate] but explains the zero order in the catalyst when [2]>[IMI]. A plausible mechanism of the TAML-catalyzed oxidations of imidacloprid is briefly discussed. Similar zero-order catalysis is presented for the oxidation of 3-methyl-4-nitrophenol by H2 O2 , catalyzed by the TAML analogue of 1 without a NO2 -group in the aromatic ring.
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Affiliation(s)
- Genoa R Warner
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA.,Present Addresses: Department of Comparative Biosciences, University of Illinois, 2001 S. Lincoln Avenue, Urbana, IL 61802, USA
| | - Yogesh Somasundar
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA
| | - Cindy Weng
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA.,Present Addresses: Department of Civil and Environmental Engineering, Stanford University, Y2E2, 473 Via Ortega, Stanford, CA, 94305, USA
| | - Mete H Akin
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA
| | - Alexander D Ryabov
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA
| | - Terrence J Collins
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA, 15213, USA
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Somasundar Y, Lu IC, Mills MR, Qian LY, Olivares X, Ryabov AD, Collins TJ. Oxidative Catalysis by TAMLs: Obtaining Rate Constants for Non-Absorbing Targets by UV-Vis Spectroscopy. Chemphyschem 2020; 21:1083-1086. [PMID: 32291857 DOI: 10.1002/cphc.202000222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/13/2020] [Indexed: 11/07/2022]
Abstract
Understanding the catalysis of oxidative reactions by TAML activators of peroxides, i. e. iron(III) complexes of tetraamide macrocyclic ligands, advocated a spectrophotometric procedure for quantifying the catalytic activity of TAMLs for colorless targets (kII ', M-1 s-1 ), which is incomparably more advantageous in terms of time, cost, energy, and ecology than NMR, HPLC, UPLC, GC-MS and other similar techniques. Dyes Orange II or Safranin O (S) are catalytically bleached by non-excessive amount of H2 O2 in the presence of colorless substrates (S1 ) according to the rate law: -d[S]/dt=kI kII [H2 O2 ][S][TAML]/(kI [H2 O2 ]+kII [S]+kII '[S1 ]). The bleaching rate is thus a descending hyperbolic function of S1 : v=ab/(b+[S1 ]). Values of kII ' found from a and b for phenol and propranolol with commonly used TAML [FeIII {o,o'-C6 H4 (NCONMe2 CO)2 CMe2 }2 (OH2 )]+ are consistent with those for S1 (phenol, propranolol) obtained directly by UPLC. The study sends vital messages to enzymologists and environmentalists.
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Affiliation(s)
- Yogesh Somasundar
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Iris C Lu
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Matthew R Mills
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Lisa Y Qian
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Ximena Olivares
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Alexander D Ryabov
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
| | - Terrence J Collins
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, PA 15213, USA
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20
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Lian S, Wu L, Nikolausz M, Lechtenfeld OJ, Richnow HH. 2H and 13C isotope fractionation analysis of organophosphorus compounds for characterizing transformation reactions in biogas slurry: Potential for anaerobic treatment of contaminated biomass. WATER RESEARCH 2019; 163:114882. [PMID: 31352241 DOI: 10.1016/j.watres.2019.114882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/10/2019] [Accepted: 07/16/2019] [Indexed: 06/10/2023]
Abstract
The ability of anaerobic digestion (AD) to eliminate organophosphorus model compounds (OPs) with structural elements of phosphate, phosphorothioate and phosphorodithioate esters was studied. The enzymatic mechanism of the first irreversible degradation reaction was characterized using metabolite pattern and kinetic 2H/13C-isotope effect in original, cell-free and heat sterilized biogas slurry. The isotope fractionation study suggests different modes of degradation reactions. Representatives for phosphate ester, tris(2-chloroethyl) phosphate and tris(1,3-dichloro-2-propyl) phosphate, were hydrolyzed in biogas slurry without carbon or hydrogen isotope fractionation. Representatives for phosphorodithioate, Dimethoate and Malathion, were degraded in original slurry yielding carbon enrichment factor (εC) of -0.6 ± 0.1‰ and -5.5 ± 0.1‰ (-0.9 ± 0.1‰ and -7.2 ± 0.5‰ in cell-free slurry), without hydrogen isotope fractionation. Phosphorothioate degradation represented by Parathion and Parathion-methyl yielded surprisingly different εC (-0.7 ± 0.2 and -3.6 ± 0.4‰) and εH (-33 ± 5 and -5 ± 1‰) in original slurry compared to cell-free slurry (εC = -2.5 ± 0.5 and -8.6 ± 1.4‰; εH = -61 ± 10 and -10 ± 3‰) suggesting H-C bond cleavage. Degradation of Parathion and Parathion-methyl in sterilized slurry gave carbon but not hydrogen fractionation implying relative thermostable enzymatic activity with different mechanism. The correlation of 2H and 13C stable isotope fractionation of Parathion in biogas slurry showed distinct pattern (Λoriginal = 31 ± 11, Λcell-free = 20 ± 2), indicating different mechanism from chemical hydrolysis. Overall, AD can be a potential treatment for OPs contaminated biomass or contaminated organic waste material.
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Affiliation(s)
- Shujuan Lian
- Department of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research-UFZ, Permoserstraße 15, 04318, Leipzig, Germany.
| | - Langping Wu
- Department of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research-UFZ, Permoserstraße 15, 04318, Leipzig, Germany.
| | - Marcell Nikolausz
- Department of Environmental Microbiology, Helmholtz Centre for Environmental Research-UFZ, Permoserstraße 15, 04318, Leipzig, Germany.
| | - Oliver J Lechtenfeld
- Department of Analytical Chemistry, Helmholtz Centre for Environmental Research-UFZ, Permoserstraße 15, 04318, Leipzig, Germany.
| | - Hans H Richnow
- Department of Isotope Biogeochemistry, Helmholtz Centre for Environmental Research-UFZ, Permoserstraße 15, 04318, Leipzig, Germany.
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21
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Jingwen Ran, Yu Y, Li L. Synthesis, Crystal Structure, and Photocatalytic Properties of Two Novel Fe-Complexes Based on Oxalato Ligands. RUSS J INORG CHEM+ 2019. [DOI: 10.1134/s003602361909016x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Patel M, Kumar R, Kishor K, Mlsna T, Pittman CU, Mohan D. Pharmaceuticals of Emerging Concern in Aquatic Systems: Chemistry, Occurrence, Effects, and Removal Methods. Chem Rev 2019; 119:3510-3673. [DOI: 10.1021/acs.chemrev.8b00299] [Citation(s) in RCA: 827] [Impact Index Per Article: 165.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Manvendra Patel
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rahul Kumar
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Kamal Kishor
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Todd Mlsna
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Charles U. Pittman
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Dinesh Mohan
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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Zhang P, Hu J, Liu B, Yang J, Hou H. Recent advances in metalloporphyrins for environmental and energy applications. CHEMOSPHERE 2019; 219:617-635. [PMID: 30554049 DOI: 10.1016/j.chemosphere.2018.12.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 06/09/2023]
Abstract
Porphyrin-based chemistry has reached an unprecedented period of rapid development after decades of study. Due to attractive multifunctional properties, porphyrins and their analogues have emerged as multifunctional organometals for environmental and energy purposes. In particular, pioneer works have been conducted to explore their application in pollution abatement, energy conversion and storage and molecule recognition. This review summarizes recent advances of porphyrins chemistry, focusing on elucidating the nature of catalytic process. The Fenton-like redox chemistry and photo-excitability of porphyrins and their analogues are discussed, highlighting the generation of high-valent iron oxo porphyrin species. Finally, challenges in current research are identified and perspectives for future development in this area are presented.
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Affiliation(s)
- Peng Zhang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China; Hubei Provincial Engineering Laboratory of Solid Waste Treatment, Disposal and Recycling, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China
| | - Jingping Hu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China; Hubei Provincial Engineering Laboratory of Solid Waste Treatment, Disposal and Recycling, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China.
| | - Bingchuan Liu
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China; Hubei Provincial Engineering Laboratory of Solid Waste Treatment, Disposal and Recycling, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China
| | - Jiakuan Yang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China; Hubei Provincial Engineering Laboratory of Solid Waste Treatment, Disposal and Recycling, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China
| | - Huijie Hou
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China; Hubei Provincial Engineering Laboratory of Solid Waste Treatment, Disposal and Recycling, Huazhong University of Science and Technology (HUST), Wuhan, Hubei, 430074, PR China.
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Somasundar Y, Shen LQ, Hoane AG, Tang LL, Mills MR, Burton AE, Ryabov AD, Collins TJ. Structural, Mechanistic, and Ultradilute Catalysis Portrayal of Substrate Inhibition in the TAML–Hydrogen Peroxide Catalytic Oxidation of the Persistent Drug and Micropollutant, Propranolol. J Am Chem Soc 2018; 140:12280-12289. [DOI: 10.1021/jacs.8b08108] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yogesh Somasundar
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Longzhu Q. Shen
- Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, U.K
| | - Alexis G. Hoane
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Liang L. Tang
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Matthew R. Mills
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Abigail E. Burton
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D. Ryabov
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J. Collins
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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25
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Su H, Yu C, Zhou Y, Gong L, Li Q, Alvarez PJJ, Long M. Quantitative structure-activity relationship for the oxidation of aromatic organic contaminants in water by TAML/H 2O 2. WATER RESEARCH 2018; 140:354-363. [PMID: 29751317 DOI: 10.1016/j.watres.2018.04.062] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/23/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Tetra-amido macrocyclic ligand (TAML) activator is a functional analog of peroxidase enzymes, which activates hydrogen peroxide (H2O2) to form high valence iron-oxo complexes that selectively degrade persistent aromatic organic contaminants (ACs) in water. Here, we develop quantitative structure-activity relationship (QSAR) models based on measured pseudo first-order kinetic rate coefficients (kobs) of 29 ACs (e.g., phenols and pharmaceuticals) oxidized by TAML/H2O2 at neutral and basic pH values to gain mechanistic insight on the selectivity and pH dependence of TAML/H2O2 systems. These QSAR models infer that electron donating ability (EHOMO) is the most important AC characteristic for TAML/H2O2 oxidation, pointing to a rate-limiting single-electron transfer (SET) mechanism. Oxidation rates at pH 7 also depend on AC reactive indices such as fmin- and qH+, which respectively represent propensity for electrophilic attack and the most positive net atomic charge on hydrogen atoms. At pH 10, TAML/H2O2 is more reactive towards ACs with a lower hydrogen to carbon atoms ratio (#H:C), suggesting the significance of hydrogen atom abstraction. In addition, lnkobs of 14 monosubstituted phenols is negatively correlated with Hammett constants (σ) and exhibits similar sensitivity to substituent effects as horseradish peroxidase. Although accurately predicting degradation rates of specific ACs in complex wastewater matrices could be difficult, these QSAR models are statistically robust and help predict both relative degradability and reaction mechanism for TAML/H2O2-based treatment processes.
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Affiliation(s)
- Hanrui Su
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chunyang Yu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yongfeng Zhou
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Lidong Gong
- School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China
| | - Qilin Li
- Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, United States
| | - Pedro J J Alvarez
- Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, United States
| | - Mingce Long
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Key Laboratory for Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China.
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26
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Detection of Pesticide Residues (Fenitrothion) in Fruit Samples Based On Niobium Carbide@Molybdenum Nanocomposite: An Electrocatalytic Approach. Anal Chim Acta 2018; 1030:52-60. [PMID: 30032773 DOI: 10.1016/j.aca.2018.05.044] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 11/21/2022]
Abstract
We have reported an effective electrochemical sensor for assorted pesticide (i.e., Fenitrothion). Exact tracking of these pesticides has become more important for protecting the environment and food resources owing to their high toxicity. Hence, the development of compatible sensors for the real-time detection of pesticides is imperative to overcome practical limitations encountered in conventional methodologies. In this regard, the role of the novel, advanced functional materials such as niobium carbide (NbC) supported on molybdenum nanoparticles (NbC@Mo) has drawn great consideration in conventional sensory systems because of their numerous advantages over other nanomaterials. The nanocomposite was characterized by XRD, XPS, HR-TEM, and EIS. Under optimized working conditions, the modified electrode NbC@Mo/SPCE responds linearly as 0.01-1889 μM concentration range and the detection limit is 0.15 nM. Most importantly, the method was successfully demonstrated in fruit samples.
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Takeo M, Yamamoto K, Sonoyama M, Miyanaga K, Kanbara N, Honda K, Kato DI, Negoro S. Characterization of the 3-methyl-4-nitrophenol degradation pathway and genes of Pseudomonas sp. strain TSN1. J Biosci Bioeng 2018; 126:355-362. [PMID: 29699943 DOI: 10.1016/j.jbiosc.2018.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 03/14/2018] [Accepted: 04/02/2018] [Indexed: 11/18/2022]
Abstract
3-Methyl-4-nitrophenol (3M4NP) is formed in soil as a hydrolysis product of fenitrothion, one of the major organophosphorus pesticides. A Pseudomonas strain was isolated as a 3M4NP degrader from a crop soil and designated TSN1. This strain utilized 3M4NP as a sole carbon and energy source. To elucidate the biodegradation pathway, we performed transposon mutagenesis with pCro2a (mini-Tn5495) and obtained three mutants accumulating a dark pink compound(s) from 3M4NP. Rescue cloning and sequence analysis revealed that in all mutants, the transposon disrupted an identical aromatic compound meta-cleaving dioxygenase gene, and a monooxygenase gene was located just downstream of the dioxygenase gene. These two genes were designated mnpC and mnpB, respectively. The gene products showed high identity with the methylhydroquinone (MHQ) monooxygenase (58%) and the 3-methylcatechol 2,3-dioxygenase (54%) of a different 3M4NP degrader Burkholderia sp. NF100. The transposon mutants converted 3M4NP or MHQ into two identical metabolites, one of which was identified as 2-hydroxy-5-methyl-1,4-benzoquinone (2H5MBQ) by GC/MS analysis. Furthermore, two additional genes (named mnpA1 and mnpA2), almost identical to the p-nitrophenol monooxygenase and the p-benzoquinone reductase genes of Pseudomonas sp. WBC-3, were isolated from the total DNA of strain TSN1. Disruption of mnpA1 resulted in the complete loss of the 3M4NP degradation activity, demonstrating that mnpA1 encodes the initial monooxygenase for 3M4NP degradation. The purified mnpA2 gene product could efficiently reduce methyl p-benzoquinone (MBQ) into MHQ. These results suggest that strain TSN1 degrades 3M4NP via MBQ, MHQ, and 2H5MBQ in combination with mnpA1A2 and mnpCB, existing at different loci on the genome.
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Affiliation(s)
- Masahiro Takeo
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
| | - Kenta Yamamoto
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Masashi Sonoyama
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Kana Miyanaga
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Nana Kanbara
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Koichi Honda
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Dai-Ichiro Kato
- Department of Chemistry and Bioscience, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
| | - Seiji Negoro
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
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Zhu YZ, Fu M, Jeong IH, Kim JH, Zhang CJ. Metabolism of an Insecticide Fenitrothion by Cunninghamella elegans ATCC36112. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10711-10718. [PMID: 29144738 DOI: 10.1021/acs.jafc.7b04273] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, the detailed metabolic pathways of fenitrothion (FNT), an organophosphorus insecticide by Cunninghamella elegans, were investigated. Approximately 81% of FNT was degraded within 5 days after treatment with concomitant accumulation of four metabolites (M1-M4). The four metabolites were separated by high-performance liquid chromatography, and their structures were identified by mass spectroscopy and/or nuclear magnetic resonance. M3 is confirmed to be an initial precursor of others and identified as fenitrothion-oxon. On the basis of their metabolic profiling, the possible metabolic pathways involved in phase I and II metabolism of FNT by C. elegans was proposed. We also found that C. elegans was able to efficiently and rapidly degrade other organophosphorus pesticides (OPs). Thus, these results will provide insight into understanding of the fungal degradation of FNT and the potential application for bioremediation of OPs. Furthermore, the ability of C. elegans to mimic mammalian metabolism would help us elucidate the metabolic fates of organic compounds occurring in mammalian liver cells and evaluate their toxicity and potential adverse effects.
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Affiliation(s)
- Yong-Zhe Zhu
- College of Chemistry and Pharmaceutical Science, Qingdao Agricultural University , 700 Changcheng Road, Chengyang, Qingdao, Shandong 266109, People's Republic of China
| | - Min Fu
- College of Chemistry and Pharmaceutical Science, Qingdao Agricultural University , 700 Changcheng Road, Chengyang, Qingdao, Shandong 266109, People's Republic of China
| | - In-Hong Jeong
- Division of Crop Protection, National Institute of Agricultural Science, Rural Development Administration , 166 Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Jeong-Han Kim
- Department of Agricultural Biotechnology, Seoul National University , 599 Gwanak-ro, Silim-dong, Gwanak-gu, Seoul 151-742, Republic of Korea
| | - Chuan-Jie Zhang
- Department of Plant Science, University of Connecticut , 1376 Storrs Road, U-4163, Storrs, Connecticut 06269, United States
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de Sousa DP, Miller CJ, Chang Y, Waite TD, McKenzie CJ. Electrochemically Generated cis-Carboxylato-Coordinated Iron(IV) Oxo Acid-Base Congeners as Promiscuous Oxidants of Water Pollutants. Inorg Chem 2017; 56:14936-14947. [PMID: 29039183 DOI: 10.1021/acs.inorgchem.7b02208] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The nonheme iron(IV) oxo complex [FeIV(O)(tpenaH)]2+ and its conjugate base [FeIV(O)(tpena)]+ [tpena- = N,N,N'-tris(2-pyridylmethyl)ethylenediamine-N'-acetate] have been prepared electrochemically in water by bulk electrolysis of solutions prepared from [FeIII2(μ-O)(tpenaH)2](ClO4)4 at potentials over 1.3 V (vs NHE) using inexpensive and commercially available carbon-based electrodes. Once generated, these iron(IV) oxo complexes persist at room temperature for minutes to half an hour over a wide range of pH values. They are capable of rapidly decomposing aliphatic and aromatic alcohols, alkanes, formic acid, phenols, and the xanthene dye rhodamine B. The oxidation of formic acid to carbon dioxide demonstrates the capacity for total mineralization of organic compounds. A radical hydrogen-atom-abstraction mechanism is proposed with a reactivity profile for the series that is reminiscent of oxidations by the hydroxyl radical. Facile regeneration of [FeIV(O)(tpenaH)]2+/ [FeIV(O)(tpena)]+ and catalytic turnover in the oxidation of cyclohexanol under continuous electrolysis demonstrates the potential of the application of [FeIII(tpena)]2+ as an electrocatalyst. The promiscuity of the electrochemically generated iron(IV) oxo complexes, in terms of the broad range of substrates examined, represents an important step toward the goal of cost-effective electrocatalytic water purification.
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Affiliation(s)
- David P de Sousa
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark , Campusvej 55, 5320 Odense, Denmark
| | - Christopher J Miller
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales , Sydney, New South Wales 2052, Australia
| | - Yingyue Chang
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales , Sydney, New South Wales 2052, Australia
| | - T David Waite
- Water Research Centre, School of Civil and Environmental Engineering, University of New South Wales , Sydney, New South Wales 2052, Australia
| | - Christine J McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark , Campusvej 55, 5320 Odense, Denmark
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Sahu C, Das AK. Solvolysis of organophosphorus pesticide parathion with simple and $$\upalpha $$ α nucleophiles: a theoretical study. J CHEM SCI 2017. [DOI: 10.1007/s12039-017-1322-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wang C, Gao J, Gu C. Rapid Destruction of Tetrabromobisphenol A by Iron(III)-Tetraamidomacrocyclic Ligand/Layered Double Hydroxide Composite/H 2O 2 System. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:488-496. [PMID: 27977161 DOI: 10.1021/acs.est.6b04294] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Iron(III)-tetraamidomacrocyclic ligand (Fe(III)-TAML) activators have received widespread attentions for their abilities to activate hydrogen peroxide to oxidize many organic pollutants. In this study, Fe(III)-TAML/layered double hydroxide (LDH) composite was developed by intercalating Fe(III)-TAML into the interlayer of LDH. Electrostatic interaction and hydrogen bonding might account for the adsorption of Fe(III)-TAML on LDH. The newly synthesized Fe(III)-TAML/LDH composite showed superior reactivity as indicated by efficient decomposition of tetrabromobisphenol A (TBBPA) in the presence of hydrogen peroxide, which can be fully degraded within 20 s and the degradation rate increased up to 8 times compared to free Fe(III)-TAML. In addition, the toxicity of the system was significantly reduced after the reaction. The higher reactivity of Fe(III)-TAML/LDH system is attributed to the enhanced adsorption of TBBPA on LDH, which could increase the contact possibility between Fe(III)-TAML and TBBPA. On the basis of the analysis of reaction intermediates, β-scission at the middle carbon atom and C-Br bond cleavage in phenyl ring of TBBPA were involved in the degradation process. Furthermore, our results demonstrated that the Fe(III)-TAML/LDH composite can be reused several times, which could lower the overall cost for environmental implication and render Fe(III)-TAML/LDH as the potential environmentally friendly catalyst for future wastewater treatment under mild reaction conditions.
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Affiliation(s)
- Chao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing 210023, P.R. China
| | - Juan Gao
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences , Nanjing, Jiangsu 210008, P. R. China
| | - Cheng Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University , Nanjing 210023, P.R. China
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Tang LL, DeNardo MA, Schuler CJ, Mills MR, Gayathri C, Gil RR, Kanda R, Collins TJ. Homogeneous Catalysis Under Ultradilute Conditions: TAML/NaClO Oxidation of Persistent Metaldehyde. J Am Chem Soc 2017; 139:879-887. [DOI: 10.1021/jacs.6b11145] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liang L. Tang
- Institute
for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Matthew A. DeNardo
- Institute
for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Christopher J. Schuler
- Institute
for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Matthew R. Mills
- Institute
for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Chakicherla Gayathri
- Institute
for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Roberto R. Gil
- Institute
for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Rakesh Kanda
- Institute
for the Environment, Brunel University, Halsbury Building (130), Kingston
Lane, Uxbridge, Middlesex, UB8 3PH, United Kingdom
| | - Terrence J. Collins
- Institute
for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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Tang LL, DeNardo MA, Gayathri C, Gil RR, Kanda R, Collins TJ. TAML/H2O2 Oxidative Degradation of Metaldehyde: Pursuing Better Water Treatment for the Most Persistent Pollutants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:5261-5268. [PMID: 27088657 DOI: 10.1021/acs.est.5b05518] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The extremely persistent molluscicide, metaldehyde, widely used on farms and gardens, is often detected in drinking water sources of various countries at concentrations of regulatory concern. Metaldehyde contamination restricts treatment options. Conventional technologies for remediating dilute organics in drinking water, activated carbon, and ozone, are insufficiently effective against metaldehyde. Some treatment plants have resorted to effective, but more costly UV/H2O2. Here we have examined if TAML/H2O2 can decompose metaldehyde under laboratory conditions to guide development of a better real world option. TAML/H2O2 slowly degrades metaldehyde to acetaldehyde and acetic acid. Nuclear magnetic resonance spectroscopy ((1)H NMR) was used to monitor the degradation-the technique requires a high metaldehyde concentration (60 ppm). Within the pH range of 6.5-9, the reaction rate is greatest at pH 7. Under optimum conditions, one aliquot of TAML 1a (400 nM) catalyzed 5% degradation over 10 h with a turnover number of 40. Five sequential TAML aliquots (2 μM overall) effected a 31% removal over 60 h. TAML/H2O2 degraded metaldehyde steadily over many hours, highlighting an important long-service property. The observation of metaldehyde decomposition under mild conditions provides a further indication that TAML catalysis holds promise for advancing water treatment. These results have turned our attention to more aggressive TAML activators in development, which we expect will advance the observed technical performance.
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Affiliation(s)
- Liang L Tang
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Matthew A DeNardo
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Chakicherla Gayathri
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Roberto R Gil
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Rakesh Kanda
- Institute for the Environment, Brunel University , Halsbury Building (130), Kingston Lane, Uxbridge, Middlesex, UB8 3PH, United Kingdom
| | - Terrence J Collins
- Department of Chemistry, Carnegie Mellon University , 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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DeNardo MA, Mills MR, Ryabov AD, Collins TJ. Unifying Evaluation of the Technical Performances of Iron-Tetra-amido Macrocyclic Ligand Oxidation Catalysts. J Am Chem Soc 2016; 138:2933-6. [DOI: 10.1021/jacs.5b13087] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthew A. DeNardo
- Department of Chemistry,
Institute of Green Science, Mellon Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Matthew R. Mills
- Department of Chemistry,
Institute of Green Science, Mellon Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D. Ryabov
- Department of Chemistry,
Institute of Green Science, Mellon Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J. Collins
- Department of Chemistry,
Institute of Green Science, Mellon Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
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35
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Jawad A, Li Y, Guo L, Khan A, Chen Z, Wang J, Yang J, Liu W, Yin G. Bimetallic synergistic degradation of chlorophenols by CuCoOx–LDH catalyst in bicarbonate-activated hydrogen peroxide system. RSC Adv 2016. [DOI: 10.1039/c6ra10402a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A CuCoOx–LDH-based catalyst demonstrated high activity for chlorophenol degradation with low leaching in a bicarbonate-activated hydrogen peroxide system.
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Affiliation(s)
- Ali Jawad
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Yibing Li
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Lianshuang Guo
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Aimal Khan
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Zhuqi Chen
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Jingyu Wang
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Jiakuan Yang
- School of Environmental Science and Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
| | - Weidong Liu
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- PR China
| | - Guochuan Yin
- School of Chemistry and Chemical Engineering
- Hubei Key Laboratory of Material Chemistry and Service Failure
- Huazhong University of Science and Technology
- Wuhan 430074
- PR China
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Mills MR, Burton AE, Mori DI, Ryabov AD, Collins TJ. Iron(IV) or iron(V)? Heterolytic or free radical? Oxidation pathways of a TAML activator in acetonitrile at −40 °C. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1073270] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Matthew R. Mills
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Abigail E. Burton
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Dylan I. Mori
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
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Tang LL, Gunderson WA, Weitz AC, Hendrich MP, Ryabov AD, Collins TJ. Activation of Dioxygen by a TAML Activator in Reverse Micelles: Characterization of an Fe(III)Fe(IV) Dimer and Associated Catalytic Chemistry. J Am Chem Soc 2015; 137:9704-15. [PMID: 26161504 DOI: 10.1021/jacs.5b05229] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Iron TAML activators of peroxides are functional catalase-peroxidase mimics. Switching from hydrogen peroxide (H2O2) to dioxygen (O2) as the primary oxidant was achieved by using a system of reverse micelles of Aerosol OT (AOT) in n-octane. Hydrophilic TAML activators are localized in the aqueous microreactors of reverse micelles where water is present in much lower abundance than in bulk water. n-Octane serves as a proximate reservoir supplying O2 to result in partial oxidation of Fe(III) to Fe(IV)-containing species, mostly the Fe(III)Fe(IV) (major) and Fe(IV)Fe(IV) (minor) dimers which coexist with the Fe(III) TAML monomeric species. The speciation depends on the pH and the degree of hydration w0, viz., the amount of water in the reverse micelles. The previously unknown Fe(III)Fe(IV) dimer has been characterized by UV-vis, EPR, and Mössbauer spectroscopies. Reactive electron donors such as NADH, pinacyanol chloride, and hydroquinone undergo the TAML-catalyzed oxidation by O2. The oxidation of NADH, studied in most detail, is much faster at the lowest degree of hydration w0 (in "drier micelles") and is accelerated by light through NADH photochemistry. Dyes that are more resistant to oxidation than pinacyanol chloride (Orange II, Safranine O) are not oxidized in the reverse micellar media. Despite the limitation of low reactivity, the new systems highlight an encouraging step in replacing TAML peroxidase-like chemistry with more attractive dioxygen-activation chemistry.
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Affiliation(s)
- Liang L Tang
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - William A Gunderson
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Andrew C Weitz
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Michael P Hendrich
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Alexander D Ryabov
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Terrence J Collins
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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Removal of ecotoxicity of 17α-ethinylestradiol using TAML/peroxide water treatment. Sci Rep 2015; 5:10511. [PMID: 26068117 PMCID: PMC4464256 DOI: 10.1038/srep10511] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 04/23/2015] [Indexed: 11/08/2022] Open
Abstract
17α-ethinylestradiol (EE2), a synthetic oestrogen in oral contraceptives, is one of many pharmaceuticals found in inland waterways worldwide as a result of human consumption and excretion into wastewater treatment systems. At low parts per trillion (ppt), EE2 induces feminisation of male fish, diminishing reproductive success and causing fish population collapse. Intended water quality standards for EE2 set a much needed global precedent. Ozone and activated carbon provide effective wastewater treatments, but their energy intensities and capital/operating costs are formidable barriers to adoption. Here we describe the technical and environmental performance of a fast- developing contender for mitigation of EE2 contamination of wastewater based upon small- molecule, full-functional peroxidase enzyme replicas called "TAML activators". From neutral to basic pH, TAML activators with H2O2 efficiently degrade EE2 in pure lab water, municipal effluents and EE2-spiked synthetic urine. TAML/H2O2 treatment curtails estrogenicity in vitro and substantially diminishes fish feminization in vivo. Our results provide a starting point for a future process in which tens of thousands of tonnes of wastewater could be treated per kilogram of catalyst. We suggest TAML/H2O2 is a worthy candidate for exploration as an environmentally compatible, versatile, method for removing EE2 and other pharmaceuticals from municipal wastewaters.
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Napoly F, Kieffer R, Jean-Gérard L, Goux-Henry C, Draye M, Andrioletti B. Fe(TAML)Li/tert-butyl hydroperoxide as a new combination for benzylic C–H oxidation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.03.115] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Zhu X, Li B, Yang J, Li Y, Zhao W, Shi J, Gu J. Effective adsorption and enhanced removal of organophosphorus pesticides from aqueous solution by Zr-based MOFs of UiO-67. ACS APPLIED MATERIALS & INTERFACES 2015; 7:223-31. [PMID: 25514633 DOI: 10.1021/am5059074] [Citation(s) in RCA: 232] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Though many efforts have been devoted to the adsorptive removal of hazardous materials of organophosphorus pesticides (OPs), it is still highly desirable to develop novel adsorbents with high adsorption capacities. In the current work, the removal of two representative OPs, glyphosate (GP) and glufosinate (GF), was investigated by the exceptionally stable Zr-based MOFs of UiO-67. The abundant Zr-OH groups, resulting from the missing-linker induced terminal hydroxyl groups and the inherent bridging ones in Zr-O clusters of UiO-67 particles, served as natural anchorages for efficient GP and GF capture in relation with their high affinity toward phosphoric groups in OPs. The correlation between the most significant parameters such as contact time, OPs concentration, adsorbent dose, pH, as well as ionic strength with the adsorption capacities was optimized, and the effects of these parameters on the removal efficiency of GP and GF from the polluted aqueous solution were investigated. The adsorption of GP on UiO-67 was faster than that of GF, and a pseudo-second-order rate equation effectively described the uptake kinetics. The Langmuir model exhibited a better fit to adsorption isotherm than the Freundlich model. Thanks to the strong affinity and adequate pore size, the adsorption capacities in UiO-67 approached as high as 3.18 mmol (537 mg) g(-1) for GP and 1.98 mmol (360 mg) g(-1) for GF, which were much higher than those of many other reported adsorbents. The excellent adsorption characteristics of the current adsorbents toward OPs were preserved in a wide pH window and high concentration of the background electrolytes. These prefigured the promising potentials of UiO-67 as novel adsorbent for the efficient removal of OPs from aqueous solution.
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Affiliation(s)
- Xiangyang Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology , Shanghai 200237, China
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Kundu S, Chanda A, Thompson JVK, Diabes G, Khetan SK, Ryabov AD, Collins TJ. Rapid degradation of oxidation resistant nitrophenols by TAML activator and H2O2. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01426j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TAML and H2O2remove toxic nitrophenol pollutants producing innocuous minerals. Mechanistic studies reveal the substrate inhibition due to the reversible binding of nitrophenolate to iron(iii) of the TAML resting state.
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Affiliation(s)
- Soumen Kundu
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Arani Chanda
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Jasper V. K. Thompson
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - George Diabes
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Sushil K. Khetan
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Alexander D. Ryabov
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
| | - Terrence J. Collins
- Institute for Green Science
- Department of Chemistry
- Carnegie Mellon University
- Pittsburgh
- USA
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Vdovenko MM, Demiyanova AS, Kopylov KE, Sakharov IY. FeIII–TAML activator: A potent peroxidase mimic for chemiluminescent determination of hydrogen peroxide. Talanta 2014; 125:361-5. [DOI: 10.1016/j.talanta.2014.03.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 03/11/2014] [Accepted: 03/17/2014] [Indexed: 10/25/2022]
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43
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Majumdar K, Nandi RK, Ganai S. Synthesis of phosphorus containing medium ring heterocycles by sequential Claisen rearrangement and ring closing metathesis. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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44
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Park Y, Seo J, Park S, Yoo EJ, Lee PH. Rhodium-catalyzed oxidative C-H activation/cyclization for the synthesis of phosphaisocoumarins and phosphorous 2-pyrones. Chemistry 2013; 19:16461-8. [PMID: 24123397 DOI: 10.1002/chem.201302652] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Indexed: 11/10/2022]
Abstract
Rhodium-catalyzed cyclization of phosphinic acids and phosphonic monoesters with alkynes has been developed. The oxidative annulation proceeds with complete conversion of phosphinic acid derivatives and allowed the atom-economic preparation of useful phosphaisocoumarins with high yield and selectivity. The reaction is tolerant of extensive substitution on the phosphinic acid, phosphonic monoester and alkyne, including halides, ketone, and hydroxyl groups as substituents. Furthermore, we found that alkenylphosphonic monoesters proceed to give a wide range of phosphorus 2-pyrones through oxidative annulation with alkynes. Mechanistic studies revealed that C-H bond metalation was the rate-limiting step.
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Affiliation(s)
- Youngchul Park
- Department of Chemistry, Kangwon National University, Chuncheon 200-701 (Republic of Korea), Fax: (+82) 33-253-7582
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Pavez P, Millán D, Morales JI, Castro EA, López A. C, Santos JG. Mechanisms of Degradation of Paraoxon in Different Ionic Liquids. J Org Chem 2013; 78:9670-6. [DOI: 10.1021/jo401351v] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paulina Pavez
- Facultad
de Química, Pontificia Universidad
Católica de Chile, Casilla 306, Santiago 6094411, Chile
| | - Daniela Millán
- Facultad
de Química, Pontificia Universidad
Católica de Chile, Casilla 306, Santiago 6094411, Chile
| | - Javiera I. Morales
- Facultad
de Química, Pontificia Universidad
Católica de Chile, Casilla 306, Santiago 6094411, Chile
| | - Enrique A. Castro
- Facultad
de Química, Pontificia Universidad
Católica de Chile, Casilla 306, Santiago 6094411, Chile
| | - Claudio López A.
- Facultad
de Química, Pontificia Universidad
Católica de Chile, Casilla 306, Santiago 6094411, Chile
| | - José G. Santos
- Facultad
de Química, Pontificia Universidad
Católica de Chile, Casilla 306, Santiago 6094411, Chile
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Canals M, Gonzalez-Olmos R, Costas M, Company A. Robust iron coordination complexes with N-based neutral ligands as efficient Fenton-like catalysts at neutral pH. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:9918-9927. [PMID: 23895017 DOI: 10.1021/es401602t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The homogeneous Fenton-like oxidation of organic substrates in water with hydrogen peroxide, catalyzed by six different metal coordination complexes with N-based neutral ligands, was studied at ambient conditions and initial pH 7, employing hydrogen peroxide as the terminal oxidant. At low catalyst concentration, the catalytic oxidative depletion of toluene achieved by selected catalysts was much more efficient than that obtained by the Fenton reagent at pH 3. The influence of pH, the water matrix and the catalyst/hydrogen peroxide concentration were investigated for the oxidation of toluene employing [FeCl2(bpmcn)] (1, bpmcn = N,N'-bis(2-pyridylmethyl)-N,N'-dimethyl-trans-1,2-diaminocyclohexane), the most efficient catalyst of the series. Moreover, the evolution of catalysts [FeCl2(bpmcn)] (1) and [Fe(OTf)2(Pytacn)] (3, Pytacn = 1-(2-pyridylmethyl)-4,7-dimethyl-1,4,7-triazacyclononane, OTf = trifluoromethanesulfonate anion) during the course of the reaction was also studied by electrospray ionization mass spectrometry (ESI-MS). The oxidation products derived from toluene oxidation were also analyzed. A plausible mechanism of toluene degradation using [FeCl2(bpmcn)] (1) and [Fe(OTf)2(Pytacn)] (3) as catalysts was proposed, which involves the coexistence of a metal-based path, analogous to that operating in organic media where substrate oxidation is executed by an iron(V)-oxo-hydroxo species, in parallel to a Fenton-type process where hydroxyl radicals are formed.
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Affiliation(s)
- Maite Canals
- LEQUIA, Institute of the Environment, Universitat de Girona , Campus Montilivi, E17071 Girona (Catalonia - Spain)
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Truong L, DeNardo MA, Kundu S, Collins TJ, Tanguay RL. Zebrafish Assays as Developmental Toxicity Indicators in The Design of TAML Oxidation Catalysts. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2013; 15:2339-2343. [PMID: 24748850 PMCID: PMC3989102 DOI: 10.1039/c3gc40376a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
TAML activators promise a novel water treatment approach by efficiently catalysing peroxide-based degradation of chemicals of high concern at environmental concentrations. Green design ethics demands an exploration of TAML toxicity. Exposure to high concentrations of certain activators caused adverse effects in zebrafish. At typical TAML operational concentrations, development was not perturbed.
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Affiliation(s)
- Lisa Truong
- Department of Environmental and Molecular Toxicology, Sinnhuber Aquatic Research Laboratory, Environmental Health Sciences Center, Oregon State University, 28645 East HWY 34, Corvallis, OR 97333, USA. Fax: 01 541 737 6074; Tel: 01 541 737 6514
| | - Matthew A. DeNardo
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA. Fax: 01 412 268 1061; Tel: 01 412 268 6335
| | - Soumen Kundu
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA. Fax: 01 412 268 1061; Tel: 01 412 268 6335
| | - Terrence J. Collins
- Institute for Green Science, Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA. Fax: 01 412 268 1061; Tel: 01 412 268 6335
| | - Robert L. Tanguay
- Department of Environmental and Molecular Toxicology, Sinnhuber Aquatic Research Laboratory, Environmental Health Sciences Center, Oregon State University, 28645 East HWY 34, Corvallis, OR 97333, USA. Fax: 01 541 737 6074; Tel: 01 541 737 6514
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Kundu S, Chanda A, Khetan SK, Ryabov AD, Collins TJ. TAML activator/peroxide-catalyzed facile oxidative degradation of the persistent explosives trinitrotoluene and trinitrobenzene in micellar solutions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:5319-5326. [PMID: 23586823 DOI: 10.1021/es4000627] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
TAML activators are well-known for their ability to activate hydrogen peroxide to oxidize persistent pollutants in water. The trinitroaromatic explosives, 2,4,6-trinitrotoluene (TNT) and 1,3,5-trinitrobenzene (TNB), are often encountered together as persistent, toxic pollutants. Here we show that an aggressive TAML activator with peroxides boosts the effectiveness of the known surfactant/base promoted breakdown of TNT and transforms the surfactant induced nondestructive binding of base to TNB into an extensive multistep degradation process. Treatment of basic cationic surfactant solutions of either TNT or TNB with TAML/peroxide (hydrogen peroxide and tert-butylhydroperoxide, TBHP) gave complete pollutant removal for both in <1 h with >75% of the nitrogen and ≥20% of the carbon converted to nitrite/nitrate and formate, respectively. For TNT, the TAML advantage is to advance the process toward mineralization. Basic surfactant solutions of TNB gave the colored solutions typical of known Meisenheimer complexes which did not progress to degradation products over many hours. However with added TAML activator, the color was bleached quickly and the TNB starting compound was degraded extensively toward minerals within an hour. A slower surfactant-free TAML activator/peroxide process also degrades TNT/TNB effectively. Thus, TAML/peroxide amplification effectively advances TNT and TNB water treatment giving reason to explore the environmental applicability of the approach.
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Affiliation(s)
- Soumen Kundu
- Department of Chemistry, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
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49
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Ran JW, Liu SW, Wu P, Pei J. Efficient photocatalytic properties of a dinuclear iron complex with bis[2-hydroxybenzaldehyde]hydrazonate ligand. CHINESE CHEM LETT 2013. [DOI: 10.1016/j.cclet.2013.03.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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50
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Singh R, Gutch P, Mazumder A. N, N-Dichlorourethane: An Efficient Decontaminating Reagent for Sulfur Mustard, a Chemical Warfare Agent. Ind Eng Chem Res 2013. [DOI: 10.1021/ie301991q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ravindra Singh
- Synthetic Chemistry Division, Defence R&D Establishment, Jhansi Road, Gwalior 474 002 (MP), India
| | - P.K. Gutch
- Synthetic Chemistry Division, Defence R&D Establishment, Jhansi Road, Gwalior 474 002 (MP), India
| | - Avik Mazumder
- Vertox Laboratory, Defence R&D Establishment, Jhansi Road, Gwalior 474 002 (MP), India
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