1
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Chipoco Haro DA, Barrera L, Iriawan H, Herzog A, Tian N, Medford AJ, Shao-Horn Y, Alamgir FM, Hatzell MC. Electrocatalysts for Inorganic and Organic Waste Nitrogen Conversion. ACS Catal 2024; 14:9752-9775. [PMID: 38988657 PMCID: PMC11232026 DOI: 10.1021/acscatal.4c01398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 07/12/2024]
Abstract
Anthropogenic activities have disrupted the natural nitrogen cycle, increasing the level of nitrogen contaminants in water. Nitrogen contaminants are harmful to humans and the environment. This motivates research on advanced and decarbonized treatment technologies that are capable of removing or valorizing nitrogen waste found in water. In this context, the electrocatalytic conversion of inorganic- and organic-based nitrogen compounds has emerged as an important approach that is capable of upconverting waste nitrogen into valuable compounds. This approach differs from state-of-the-art wastewater treatment, which primarily converts inorganic nitrogen to dinitrogen, and organic nitrogen is sent to landfills. Here, we review recent efforts related to electrocatalytic conversion of inorganic- and organic-based nitrogen waste. Specifically, we detail the role that electrocatalyst design (alloys, defects, morphology, and faceting) plays in the promotion of high-activity and high-selectivity electrocatalysts. We also discuss the impact of wastewater constituents. Finally, we discuss the critical product analyses required to ensure that the reported performance is accurate.
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Affiliation(s)
- Danae A Chipoco Haro
- School of Materials Science and Engineering, Georgia Institute of Technology, North Avenue 771 Ferst Dr., Atlanta, Georgia 30332, United States
| | - Luisa Barrera
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 770 Ferst Ave, Atlanta, Georgia 30309, United States
| | - Haldrian Iriawan
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Antonia Herzog
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Nianhan Tian
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Andrew J Medford
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yang Shao-Horn
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Faisal M Alamgir
- School of Materials Science and Engineering, Georgia Institute of Technology, North Avenue 771 Ferst Dr., Atlanta, Georgia 30332, United States
| | - Marta C Hatzell
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 770 Ferst Ave, Atlanta, Georgia 30309, United States
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2
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Cai W, Chen C, Bao C, Gu JN, Li K, Jia J. Nitrate reduction to nitrogen in wastewater using mesoporous carbon encapsulated Pd-Cu nanoparticles combined with in-situ electrochemical hydrogen evolution. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 362:121346. [PMID: 38824884 DOI: 10.1016/j.jenvman.2024.121346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 04/29/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
The conversion of NO3--N to N2 is of great significance for zero discharge of industrial wastewater. Pd-Cu hydrogenation catalysis has high application prospects for the reduction of NO3--N to N2, but the existing form of Pd-Cu, the Pd-Cu mass ratio and the H2 evolution rate can affect the coverage of active hydrogen (*H) on the surface of Pd, thereby affecting N2 selectivity. In this work, mesoporous carbon (MC) is used as support to disperse Pd-Cu catalyst and is applied in an in-situ electrocatalytic H2 evolution system for NO3--N removal. The Pd-Cu particles with the average size of 6 nm are uniformly encapsulated in the mesopores of MC. Electrochemical in-situ H2 evolution can not only reduce the amount of H2 used, but the H2 bubbles can also be efficiently dispersed when PPy coated nickel foam (PPy/NF) is used as cathode. Moreover, the mesoporous structure of MC can further split H2 bubbles, reducing the coverage of *H on Pd. The highest 77% N2 selectivity and a relatively faster NO3--N removal rate constant (0.10362 min-1) can be achieved under the optimal conditions, which is superior to most reported Pd-Cu catalytic systems. The prepared catalyst is further applied to the denitrification of actual deplating wastewater. NO3--N with the initial concentration of 650 mg L-1 can be completely removed after 180 min of treatment, and the TN removal can be maintained at 72%.
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Affiliation(s)
- Wenlue Cai
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Chen Chen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Chenyu Bao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Jia-Nan Gu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Kan Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China.
| | - Jinping Jia
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China
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3
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Absalyamova M, Nurmyrza M, Nurlan N, Bae S, Lee W. The effect of carbonized zeolitic imidazolate framework-67 (ZIF-67) support on the reactivity and selectivity of bimetal-catalytic aqueous NO 3- reduction. CHEMOSPHERE 2024; 358:142161. [PMID: 38685335 DOI: 10.1016/j.chemosphere.2024.142161] [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: 02/05/2024] [Revised: 04/17/2024] [Accepted: 04/25/2024] [Indexed: 05/02/2024]
Abstract
A metallic catalyst, Cobalt N-doped Carbon (Co@NC), was obtained from Zeolitic-Imidazolate Framework-67 (ZIF-67) for efficient aqueous nitrate (NO3-) removal. This advanced catalyst indicated remarkable efficiency by generating valuable ammonium (NH3/NH4+) via an environmentally friendly production technique during the nitrate treatment. Among various metals (Cu, Pt, Pd, Sn, Ru, and Ni), 3.6%Pt-Co@NC exhibited an exceptional nitrate removal, demonstrating a complete removal of 60 mg/L NO3--N (265 mg/L NO3-) in 30 min with the fastest removal kinetics (11.4 × 10-2 min-1) and 99.5% NH4+ selectivity. The synergistic effect of bimetallic Pt-Co@NC led to 100% aqueous NO3- removal, outperforming the reactivity by bare ZIF-67 (3.67%). The XPS analysis illustrated Co's promotor role for NO3- reduction to less oxidized nitrogen species and Pt's hydrogenation role for further reduction to NH4+. The durability test revealed a slight decrease in NO3- removal, which started from the third cycle (95%) and slowly proceeded to the sixth cycle (80.2%), while NH4+ selectivity exceeded 82% with no notable Co or Pt leaching throughout seven consecutive cycles. This research shed light on the significance of the impregnated Pt metal and Co exposed on the Co@NC surface for the catalytic nitrate treatment, leading to a sustainable approach for the effective removal of nitrate and economical NH4+ production.
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Affiliation(s)
- Miriam Absalyamova
- Laboratory of Environmental Systems, National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Meiirzhan Nurmyrza
- Laboratory of Environmental Systems, National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan; Civil and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Nurbek Nurlan
- Laboratory of Environmental Systems, National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Sungjun Bae
- Civil and Environmental Engineering, College of Engineering, Konkuk University, Seoul, 05029, South Korea
| | - Woojin Lee
- Laboratory of Environmental Systems, National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan; Civil and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan.
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4
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Gao W, Sun J, Zhao G. Pd Clusters Loaded with Multivalent Cu Foam for Superior Electrochemical Nitrate Reduction and Selective N≡N Bond Formation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310597. [PMID: 38143296 DOI: 10.1002/smll.202310597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/05/2023] [Indexed: 12/26/2023]
Abstract
The electrochemical denitrification of nitrate (NO3 -) in actual wastewater to nitrogen (N2) is an effective approach to reversing the current imbalance of the nitrogen cycle and the eutrophication of water. However, electrostatic repulsion between NO3 - and the cathode results in the low efficiency of NO3 - reduction reaction (NO3RR). Here, density functional theory (DFT) calculations are used as a theoretical guide to design a Pd cluster-loaded multivalent Cu foam (Pd/Cu2O-CF) electrocatalyst, which achieves a splendid 97.8% NO3 - removal rate, 97.9% N2 selectivity, 695.5 mg N g-1 Pd h-1 reduction efficiency, and 60.0% Faradaic efficiency at -1.3 V versus SCE. The projected density of states (pDOS) indicates that NO3 - and Pd/Cu2O-CF are bonded via strong complexation between the O 2p (in NO3 -) and Cu 3d (in Cu2O) with the input of voltage, which reduces the electrostatic repulsion and enhances the enrichment of NO3 - on the cathode. In-situ characterizations demonstrate that Pd[H] can reduce Cu2O to Cu, and subsequently Cu reduces NO3 - to nitrite (NO2 -) accompanied by in situ reconfiguration of multivalent Cu foam. NO2 - is then transferred to the surface of Pd clusters by the cascade catalysis and accelerates the breaking of N─O bonds to form Pd─N, and eventually achieves the N≡N bond formation.
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Affiliation(s)
- Weiqi Gao
- Laboratory of Spine and Spinal Cord Injury Repair and Regeneration, Ministry of Education, Tongji Hospital, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Jie Sun
- Laboratory of Spine and Spinal Cord Injury Repair and Regeneration, Ministry of Education, Tongji Hospital, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Guohua Zhao
- Laboratory of Spine and Spinal Cord Injury Repair and Regeneration, Ministry of Education, Tongji Hospital, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
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5
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Lim J, Cullen DA, Stavitski E, Lee SW, Hatzell MC. Atomically Ordered PdCu Electrocatalysts for Selective and Stable Electrochemical Nitrate Reduction. ACS ENERGY LETTERS 2023; 8:4746-4752. [PMID: 37969250 PMCID: PMC10644382 DOI: 10.1021/acsenergylett.3c01672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 09/12/2023] [Indexed: 11/17/2023]
Abstract
Electrochemical nitrate reduction (NO3 RR) has attracted attention as an emerging approach to mitigate nitrate pollution in groundwater. Here, we report that a highly ordered PdCu alloy-based electrocatalyst exhibits selective (91% N2), stable (480 h), and near complete (94%) removal of nitrate without loss of catalyst. In situ and ex situ XAS provide evidence that structural ordering between Pd and Cu improves long-term catalyst stability during NO3RR. In contrast, we also report that a disordered PdCu alloy-based electrocatalyst exhibits non-selective (44% N2 and 49% NH4+), unstable, and incomplete removal of nitrate. The copper within disordered PdCu alloy is vulnerable to accepting electrons from hydrogenated neighboring Pd atoms. This resulted in copper catalyst losses which were 10× greater than that of the ordered catalyst. The design of stable catalysts is imperative for water treatment because loss of the catalyst adds to the system cost and environmental impacts.
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Affiliation(s)
- Jeonghoon Lim
- George
W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - David A. Cullen
- Center
for Nanophase Materials Sciences, Oak Ridge
National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Eli Stavitski
- National
Synchrotron Light Source II, Brookhaven
National Laboratory, Upton, New York 11973, United States
| | - Seung Woo Lee
- George
W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Marta C. Hatzell
- George
W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332 United States
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6
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Wang L, Fu W, Sun S, Liu H, Wang J, Zhong W, Ma B. Preparation, characterization, and removal of nitrate from water using vacant polyoxometalate/TiO 2 composites. ENVIRONMENTAL TECHNOLOGY 2023; 44:3393-3404. [PMID: 35324393 DOI: 10.1080/09593330.2022.2058424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
Due to the rapid development of industry and agriculture, nitrate pollution in groundwater has been continuously increasing. NO3-N is a chemically stable nitrogen species and is quite difficult to remove. In this study, using heteropoly silicotungstate K8[α-SiW11O39] and Cu2+ as the active components, SiW11 and Cu2+ were loaded onto TiO2 by a sol-gel method to prepare a composite photocatalyst SiW11/TiO2/Cu. The photocatalytic reduction of dissolved NO3-N was subsequently performed using SiW11/TiO2/Cu under UV irradiation, and the influence of different experimental parameters on the photocatalytic performance was investigated. The mechanism of NO3-N reduction by the composite catalyst was also investigated. Free radicals existing within the system were detected by ESR spectroscopy, and the results indicated that C O 2 - anion free-radicals were generated by the reaction of photogenerated holes and formic acid (HCOOH). At a SiW11/TiO2/Cu dose of 1.2 g L-1 and in the presence of HCOOH as a hole scavenger, the proposed composite catalytically reduced NO3-N anddemonstrated significantadvantages in terms of its photocatalytic activity in comparison with pure TiO2. In particular, the removal efficiency of NO3-N and the selectivity of nitrogen achieved a maximum of 96% and 77%, respectively.
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Affiliation(s)
- Lingsheng Wang
- College of Resources and Environment, Shandong Agricultural University, Taian, People's Republic of China
| | - Weizhang Fu
- College of Resources and Environment, Shandong Agricultural University, Taian, People's Republic of China
| | - Shujuan Sun
- College of Resources and Environment, Shandong Agricultural University, Taian, People's Republic of China
| | - Huaihao Liu
- College of Resources and Environment, Shandong Agricultural University, Taian, People's Republic of China
| | - Jinhua Wang
- College of Resources and Environment, Shandong Agricultural University, Taian, People's Republic of China
| | - Wanzhen Zhong
- College of Resources and Environment, Shandong Agricultural University, Taian, People's Republic of China
| | - Bin Ma
- Tai'an City Management Comprehensive Service Center, Taian, People's Republic of China
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7
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Wu X, Nazemi M, Gupta S, Chismar A, Hong K, Jacobs H, Zhang W, Rigby K, Hedtke T, Wang Q, Stavitski E, Wong MS, Muhich C, Kim JH. Contrasting Capability of Single Atom Palladium for Thermocatalytic versus Electrocatalytic Nitrate Reduction Reaction. ACS Catal 2023; 13:6804-6812. [PMID: 37234352 PMCID: PMC10208376 DOI: 10.1021/acscatal.3c01285] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/13/2023] [Indexed: 05/27/2023]
Abstract
The occurrence of high concentrations of nitrate in various water resources is a significant environmental and human health threat, demanding effective removal technologies. Single atom alloys (SAAs) have emerged as a promising bimetallic material architecture in various thermocatalytic and electrocatalytic schemes including nitrate reduction reaction (NRR). This study suggests that there exists a stark contrast between thermocatalytic (T-NRR) and electrocatalytic (E-NRR) pathways that resulted in dramatic differences in SAA performances. Among Pd/Cu nanoalloys with varying Pd-Cu ratios from 1:100 to 100:1, Pd/Cu(1:100) SAA exhibited the greatest activity (TOFPd = 2 min-1) and highest N2 selectivity (94%) for E-NRR, while the same SAA performed poorly for T-NRR as compared to other nanoalloy counterparts. DFT calculations demonstrate that the improved performance and N2 selectivity of Pd/Cu(1:100) in E-NRR compared to T-NRR originate from the higher stability of NO3* in electrocatalysis and a lower N2 formation barrier than NH due to localized pH effects and the ability to extract protons from water. This study establishes the performance and mechanistic differences of SAA and nanoalloys for T-NRR versus E-NRR.
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Affiliation(s)
- Xuanhao Wu
- Department
of Environmental Engineering, Zhejiang University, Hangzhou 310058, China
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Mohammadreza Nazemi
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Srishti Gupta
- School
for the Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Adam Chismar
- School
for the Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Kiheon Hong
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Hunter Jacobs
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Wenqing Zhang
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Kali Rigby
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Tayler Hedtke
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
| | - Qingxiao Wang
- Imaging
and Characterization Core Lab, King Abdullah
University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Eli Stavitski
- National
Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Michael S. Wong
- Department
of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Christopher Muhich
- School
for the Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, Arizona 85287, United States
| | - Jae-Hong Kim
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, United States
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8
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Lv JJ, Li Z, Fu J, Zhu W. Accelerating ammonia synthesis in a membraneless flow electrolyzer through coupling ambient dinitrogen oxidation and water splitting. iScience 2023; 26:106407. [PMID: 37020967 PMCID: PMC10067765 DOI: 10.1016/j.isci.2023.106407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 02/21/2023] [Accepted: 03/10/2023] [Indexed: 04/03/2023] Open
Abstract
An electrochemical approach for ammonia production is successfully developed by coupling the anodic dinitrogen oxidation reaction (NOR) and cathodic hydrogen evolution reaction (HER) within a well-designed membraneless flow electrolyzer. The obtained reactor shows the preferential yield of ammonia over nitrogen oxides on the vanadium nitride catalyst surface. At an applied oxidation potential of 2.25 V versus the reversible hydrogen electrode (vs RHE), a promoted ammonia production rate and Faradaic efficiency (FE) were obtained with 9.9 mmol g-1 h-1 (0.029 mmol cm-2 h-1) and 4.8%, respectively. Besides, the negative affection of ammonia contamination is efficiently alleviated. Density functional theory calculations revealed that the thermodynamic energy needed to produce ammonia (-0.63 eV) is far lower than that of producing nitrogen oxide (0.96 eV) from hydrogenated nitrogen oxides [∗N2OH] splitting, confirming the coupling of NOR and HER.
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9
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Liu R, Kong S, Shao Y, Cai D, Bai B, Wei X, Root RA, Gao X, Li C, Chorover J. Mechanisms and health implications of toxicity increment from arsenate-containing iron minerals through in vitro gastrointestinal digestion. GEODERMA 2023; 432:116377. [PMID: 37928070 PMCID: PMC10624400 DOI: 10.1016/j.geoderma.2023.116377] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Inadvertent oral ingestion is an important exposure pathway of arsenic (As) containing soil and dust. Previous researches evidenced health risk of bioaccessible As from soil and dust, but it is unclear about As mobilization mechanisms in health implications from As exposure. In this study, we investigated As release behaviors and the solid-liquid interface reactions toward As(V)-containing iron minerals in simulated gastrointestinal bio-fluids. The maximum As release amount was 0.57 mg/L from As-containing goethite and 0.82 mg/L from As-containing hematite at 9 h, and the As bioaccessibility was 10.8% and 21.6%, respectively. The higher exposure risk from hematite-sorbed As in gastrointestinal fluid was found even though goethite initially contained more arsenate than hematite. Mechanism analysis revealed that As release was mainly coupled with acid dissolution and reductive dissolution of iron minerals. Proteases enhanced As mobilization and thus increased As bioaccessibility. The As(V) released and simultaneously transformed to high toxic As(III) by gastric pepsin, while As(V) reduction in intestine was triggered by pancreatin and freshly formed Fe(II) in gastric digests. CaCl2 reduced As bioaccessibility, indicating that calcium-rich food or drugs may be effective dietary strategies to reduce As toxicity. The results deepened our understanding of the As release mechanisms associated with iron minerals in the simulated gastrointestinal tract and supplied a dietary strategy to alleviate the health risk of incidental As intake.
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Affiliation(s)
- Ruiqi Liu
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, PR China
| | - Shuqiong Kong
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, PR China
| | - Yixian Shao
- Zhejiang Institute of Geological Survey, Hangzhou 311203, Zhejiang, PR China
| | - Dawei Cai
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, PR China
| | - Bing Bai
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, PR China
| | - Xiaguo Wei
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, PR China
| | - Robert A. Root
- Department of Environmental Science, University of Arizona, Tucson, AZ 85721, United States
| | - Xubo Gao
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, PR China
| | - Chengcheng Li
- State Key of Biogeology and Environmental Geology Laboratory, China University of Geosciences, Wuhan 430074, Hubei, PR China
| | - Jon Chorover
- Department of Environmental Science, University of Arizona, Tucson, AZ 85721, United States
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10
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He L, Zeng T, Yao F, Zhong Y, Tan C, Pi Z, Hou K, Chen S, Li X, Yang Q. Electrocatalytic reduction of nitrate by carbon encapsulated Cu-Fe electroactive nanocatalysts on Ni foam. J Colloid Interface Sci 2023; 634:440-449. [PMID: 36542973 DOI: 10.1016/j.jcis.2022.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/28/2022] [Accepted: 12/04/2022] [Indexed: 12/13/2022]
Abstract
Electrocatalytic denitrification is an attractive and effective method for complete elimination of nitrate (NO3-). However, its application is limited by the activity and stability of the electrocatalyst. In this work, a novel bimetallic electrode was synthesized, in which N-doped graphitized carbon sealed with Cu and Fe nanoparticles and immobilized them on nickel foam (CuFe NPs@NC/NF) without any chemical binder. The immobilized Cu-Fe nanoparticles not only facilitated the adsorption of the reactant but also enhanced the electron transfer between the cathode and NO3-, thus promoting the electrochemical reduction of NO3-. Therefore, the as-prepared electrode exhibited enhanced electrocatalytic activity for NO3- reduction. The composite electrode with the Cu/Fe molar ratio of 1:2 achieved the highest NO3- removal (79.4 %) and the lowest energy consumption (0.0023 kW h mg-1). Furthermore, the composite electrode had a robust NO3- removal capacity under various conditions. Benefitting from the electrochlorination on the anode, this electrochemical system achieved nitrogen (N2) selectivity of 94.0 %. Moreover, CuFe NPs@NC/NF exhibited good stability after 15 cycles, which should be attributed to the graphitized carbon layer. This study confirmed that CuFe NPs@NC/NF electrode is a promising and inexpensive electrode with long-term stability for electrocatalytic denitrification.
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Affiliation(s)
- Li He
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
| | - Tianjing Zeng
- Hunan Ecological and Environmental Monitoring Center, Changsha, 410027, PR China
| | - Fubing Yao
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha, 410083, PR China.
| | - Yu Zhong
- Key Laboratory of Water Pollution Control Technology, Hunan Research Academy of Environmental Sciences, Changsha, 410004, PR China
| | - Chang Tan
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Zhoujie Pi
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Kunjie Hou
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Shengjie Chen
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Xiaoming Li
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Qi Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
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11
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Rachini M, Jaafar M, Tabaja N, Tlais S, Hamdan R, Al Ali F, Haidar O, Lancelot C, Kassem M, Bychkov E, Tidahy L, Cousin R, Dewaele D, Hamieh T, Toufaily J. Comparative study between supported bimetallic catalysts for nitrate remediation in water. OPEN CHEM 2023. [DOI: 10.1515/chem-2022-0303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023] Open
Abstract
Abstract
As the population grows and the demand for water rises, the development of efficient and sustainable water purification techniques is becoming increasingly important to ensure access to clean and safe water in the future. The pollution of surface and groundwater by nitrate (
NO
3
−
{\text{NO}}_{3}^{-}
) is a growing global concern due to the rise in nitrogen-rich waste released from agriculture and industry. The removal of nitrate ions from aqueous media using bimetallic catalysts loaded on several supports was studied. Multiwalled carbon nanotubes, activated carbon, titanium dioxide, titanium dioxide/multiwalled carbon nanotubes, and Santa Barbara Amorphous-15 were used as supports to synthesize these bimetallic catalysts. The effects of the support type, supported metal, and catalyst reduction method on the nitrate reduction activity in water were investigated. The catalysts were characterized by X-ray diffraction, fourier-transform infrared spectroscopy, Brunauer-Emmett-Teller isotherm, inductively coupled plasma spectroscopy, and field emission gun scanning transmission electron microscope. In terms of nitrate conversion, high-temperature hydrogen reduction of the catalysts was a more effective method of catalyst preparation than NaBH4 reduction. Except for the carbon nanotube-TiO2 composite, pH fixation using CO2 flow improved the efficiency of supported catalysts. The catalysts 1Pd–1Cu/TiO2 and 1Pd–Cu/SBA-15 presented the highest catalytic activity, but the latter was the most selective to nitrogen.
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Affiliation(s)
- Mouhamad Rachini
- Laboratory of Materials, Catalysis, Environment and Analytical Methods (MCEMA), EDST, FS, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
- Université du Littoral Côte d’Opale (ULCO), LPCA, EA 4493 , F-59140 Dunkerque , France
- Laboratory of Applied Studies for Sustainable Development and Renewable Energy (LEADDER), EDST, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
| | - Mira Jaafar
- Laboratory of Materials, Catalysis, Environment and Analytical Methods (MCEMA), EDST, FS, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
- Laboratory of Applied Studies for Sustainable Development and Renewable Energy (LEADDER), EDST, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
| | - Nabil Tabaja
- Laboratory of Materials, Catalysis, Environment and Analytical Methods (MCEMA), EDST, FS, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
- Laboratory of Applied Studies for Sustainable Development and Renewable Energy (LEADDER), EDST, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
| | - Sami Tlais
- College of Engineering and Technology, American University of the Middle East , Kuwait City , Kuwait
| | - Rasha Hamdan
- Laboratory of Materials, Catalysis, Environment and Analytical Methods (MCEMA), EDST, FS, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
- Laboratory of Applied Studies for Sustainable Development and Renewable Energy (LEADDER), EDST, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
| | - Fatima Al Ali
- Laboratory of Applied Studies for Sustainable Development and Renewable Energy (LEADDER), EDST, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
| | - Ola Haidar
- Laboratory of Applied Studies for Sustainable Development and Renewable Energy (LEADDER), EDST, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
- Department of Chemistry, American University of Beirut , P.O. Box 11-0236, Riad El-Solh , Beirut 1107 2020 , Lebanon
| | - Christine Lancelot
- Université de Lille – Centrale Lille/ENSCL, UCCS , Villeneuve d’Ascq , 59655 , France
| | - Mohammad Kassem
- Université du Littoral Côte d’Opale (ULCO), LPCA, EA 4493 , F-59140 Dunkerque , France
| | - Eugene Bychkov
- Université du Littoral Côte d’Opale (ULCO), LPCA, EA 4493 , F-59140 Dunkerque , France
| | - Lucette Tidahy
- Université du Littoral Côte d’Opale, UCEIV, Unité de Chimie Environnementale et Interactions sur le Vivant, EA 4492, SFR Condorcet FR CNRS 3417 , Dunkerque , France
| | - Renaud Cousin
- Université du Littoral Côte d’Opale, UCEIV, Unité de Chimie Environnementale et Interactions sur le Vivant, EA 4492, SFR Condorcet FR CNRS 3417 , Dunkerque , France
| | - Dorothée Dewaele
- Centre Commun de Mesures, Université du Littoral Côte d’Opale , Dunkerque 59140 , France
| | - Tayssir Hamieh
- Laboratory of Materials, Catalysis, Environment and Analytical Methods (MCEMA), EDST, FS, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
- Faculty of Science and Engineering, Maastricht University , P.O. Box 616, 6200 MD , Maastricht , The Netherlands
| | - Joumana Toufaily
- Laboratory of Applied Studies for Sustainable Development and Renewable Energy (LEADDER), EDST, Lebanese University , P.O. Box 11-2806, Hariri Campus , Hadath , Lebanon
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12
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Bian X, Shi F, Li J, Liang J, Bao C, Zhang H, Jia J, Li K. Highly selective electrocatalytic reduction of nitrate to nitrogen in a chloride ion-free system by promoting kinetic mass transfer of intermediate products in a novel Pd-Cu adsorption confined cathode. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 324:116405. [PMID: 36352730 DOI: 10.1016/j.jenvman.2022.116405] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/22/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
The mass transfer on the catalyst surface has a great influence on the selectivity of electrocatalytic nitrate reduction to nitrogen. In this study, a Pd-Cu adsorption confined nickel foam cathode is designed in the absence of both proton exchange membranes and chloride ions. The repulsion of the cathode enables intermediate products such as nitrite to accumulate in the confined region, resulting in an increase in the possibility of a second-order reaction to form nitrogen. The system can obtain more than 92% continuous N2 selectivity when it is used to treat 200 mg L-1 NO3--N under a current density of 8 mA cm-2, which is not only higher than those of semiconfined and nonconfined systems but also significantly better than the results obtained by Pd-Cu directly modified cathodes prepared by electrodeposition or impregnation. It is found that a high initial nitrate concentration and low current density are more beneficial for the accumulation of intermediates on Pd-Cu catalysts, thus improving the formation of nitrogen. A mechanism study reveals that the intermediates can completely occupy the active sites on the surface of Pd, avoiding the generation of active hydrogen, and therefore inhibiting the first-order reaction to produce ammonia. Moreover, the reducibility of Pd-Cu can also be gradually improved under the function of the cathode so that the system exhibits good stability. This study demonstrates an environmentally friendly and promising method for total nitrogen removal from industrial wastewater with high conductivity.
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Affiliation(s)
- Xingchen Bian
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, PR China
| | - Feng Shi
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, PR China
| | - Jingdong Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, PR China
| | - Jianxing Liang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, PR China
| | - Chenyu Bao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, PR China
| | - Hongbo Zhang
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, PR China; Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Jinping Jia
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, PR China; Shanghai Key Laboratory of Hydrogen Science & Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Kan Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, PR China; Shanghai Key Laboratory of Hydrogen Science & Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai, 200240, PR China.
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13
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Pathway and mechanism study on improvement of N2 selectivity of catalytic denitrification. JOURNAL OF SAUDI CHEMICAL SOCIETY 2022. [DOI: 10.1016/j.jscs.2022.101577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Wang C, Zhang Y, Luo H, Zhang H, Li W, Zhang WX, Yang J. Iron-Based Nanocatalysts for Electrochemical Nitrate Reduction. SMALL METHODS 2022; 6:e2200790. [PMID: 36103612 DOI: 10.1002/smtd.202200790] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/28/2022] [Indexed: 06/15/2023]
Abstract
Nitrate has a high level of stability and persistence in water, endangering human health and aquatic ecosystems. Due to its high reliability and efficiency, the electrochemical nitrate reduction reaction (NO3 RR) is regarded as the best available option for mitigating excess nitrate in water and wastewater, especially for the removal of trace levels of nitrate. One of the most critical factors in the electrochemical reduction are the catalysts, which directly affect the reaction efficiency of nitrate removal. Iron-based nanocatalysts, which have the advantages of nontoxicity, wide availability, and low cost, have emerged as a promising electrochemical NO3 RR material in recent years. This review covers major aspects of iron-based nanocatalysts for electrochemical NO3 RR, including synthetic methods, structural design, performance enhancement, electrocatalytic nitrate reduction test, and reduction mechanism. The recent progress of iron-based nanocatalysts for electrochemical NO3 RR and the mechanism of functional advantages for modified structures are reviewed from the perspectives of loading, doping, and assembly strategies, in order to realize the conversion from pollutant nitrate to harmless nitrogen or ammonia and other sustainable products. Finally, challenges and future directions for the development of low-cost and highly-efficient iron-based nanocatalysts are explored.
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Affiliation(s)
- Chuqi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yingbing Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hongxia Luo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hui Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Wei Li
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Wei-Xian Zhang
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai, 200092, P. R. China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
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15
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Sun J, Yang H, Gao W, Cao T, Zhao G. Diatomic Pd−Cu Metal‐Phosphorus Sites for Complete N≡N Bond Formation in Photoelectrochemical Nitrate Reduction. Angew Chem Int Ed Engl 2022; 61:e202211373. [DOI: 10.1002/anie.202211373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Indexed: 12/20/2022]
Affiliation(s)
- Jie Sun
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
| | - Hanxue Yang
- School of Energy and Power Engineering University of Shanghai for Science and Technology 516 Jungong Road Shanghai 200093 China
| | - Weiqi Gao
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
| | - Tongcheng Cao
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
| | - Guohua Zhao
- Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and Engineering Tongji University 1239 Siping Road Shanghai 200092 China
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16
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Wang XH, Wang ZM, Hong QL, Zhang ZN, Shi F, Li DS, Li SN, Chen Y. Oxygen-Vacancy-Rich Cu 2O Hollow Nanocubes for Nitrate Electroreduction Reaction to Ammonia in a Neutral Electrolyte. Inorg Chem 2022; 61:15678-15685. [PMID: 36122376 DOI: 10.1021/acs.inorgchem.2c02716] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The electrocatalytic nitrate reduction reaction (NO3--ERR) to ammonia (NH3) is a promising strategy for NH3 production. Cu-based nanomaterials have been regarded as a kind of effective NO3--ERR catalysts. In this work, high-quality hollow Cu2O nanocubes (Cu2O h-NCs) are facilely synthesized by a simple one-step reduction method. The as-prepared Cu2O h-NCs reveal high selectivity and activity for NO3--ERR, which is ascribed to abundant oxygen vacancies, high surface area, hollow architecture, low mass transfer resistance, and strong adsorbing ability toward NO3-. In fact, Cu2O h-NCs can achieve a Faradic efficiency of 92.9% and an NH3 yield of 56.2 mg h-1 mgcat-1 for NH3 production at -0.85 V (vs RHE) potential, which exceeds those of other transition-metal-based NO3--ERR electrocatalysts.
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Affiliation(s)
- Xiao-Hui Wang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Zheng-Min Wang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Qing-Ling Hong
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Ze-Nong Zhang
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Feng Shi
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Dong-Sheng Li
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, P. R. China
| | - Shu-Ni Li
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Yu Chen
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, P. R. China
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17
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Sun J, Yang H, Gao W, Cao T, Zhao G. Diatomic Pd‐Cu Metal‐Phosphorus Sites for Complete N≡N Bond Formation in Photoelectrochemical Nitrate Reduction. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jie Sun
- Tongji University Chemistry CHINA
| | - Hanxue Yang
- University of Shanghai for Science and Technology Energy and Power Engineering CHINA
| | | | | | - Guohua Zhao
- Tongji University Chemistry No.1239 Siping Road 200092 Shanghai CHINA
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18
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He L, Yao F, Zhong Y, Tan C, Hou K, Pi Z, Chen S, Li X, Yang Q. Achieving high-performance electrocatalytic reduction of nitrate by N-rich carbon-encapsulated Ni-Cu bimetallic nanoparticles supported nickel foam electrode. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129253. [PMID: 35739771 DOI: 10.1016/j.jhazmat.2022.129253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
The cathode with low-energy consumption and long-term stability is pivotal to achieve the conversion of nitrate (NO3-) to nitrogen (N2) by electrocatalytic denitrification. Herein, a binder-free electrode was synthesized by directly immobilizing N-doped graphitized carbon layer-encapsulated NiCu bimetallic nanoparticles on nickel foam (NF) (NiCu@N-C/NF) and served as the cathode for electrocatalytic NO3- reduction. Morphological characterization indicated that Ni and Cu nanoparticles were encapsulated by the N-doped graphitized carbon layer and well-dispersed on the surface of NF. Compared with monometallic composite cathode (Cu@N-C/NF and Ni@N-C/NF), NiCu@N-C/NF exhibited better NO3- removal performance (98.63 %) and lower energy consumption (0.007 kW·h mmol-1), which should be attributed to its strong adsorption ability to NO3- and excellent electron transfer property. Meanwhile, its electrocatalytic performance could be maintained in wide initial NO3- concentration (1.79-7.14 mM) and solution pH (3-11). With the assistance of electrochlorination, the N2 selectivity of electrochemical system was up to 99.89 % in the presence of 0.028 M Cl-. More importantly, NiCu@N-C/NF electrode displayed an ultra-high stability during ten recycling experiments. This study indicated that the binderless composite cathode NiCu@N-C/NF had great potential in electrocatalytic NO3- removal from wastewater.
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Affiliation(s)
- Li He
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - Fubing Yao
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China; Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Changsha 410083, PR China.
| | - Yu Zhong
- Key Laboratory of Water Pollution Control Technology, Hunan Research Academy of Environmental Sciences, Changsha 410004, PR China
| | - Chang Tan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Kunjie Hou
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Zhoujie Pi
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Shengjie Chen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Xiaoming Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Qi Yang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
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19
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Sánchez BS, Neyertz CA, Zanuttini MS, Querini CA, Mendow G. Hybrid process for nitrates elimination in water. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.06.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Abstract
In this work, we study the effect of modifying the metal loading (0.5–1.5 wt.% Pd and 0.1–1 wt.% Sn or In), the impregnation order of noble or promoter metal (Pd–Sn or Sn–Pd), and the type of promoter metal (Sn or In) during the preparation process for a Pd bimetallic catalyst, supported on γ-alumina, used in the catalytic reduction of nitrate. The deposition of the noble metal over the promoter metal, especially with Pd:Sn ratios (wt.) of 1:10 and 1:2, favored the hydrogen spillover rate and increased the H concentration on the catalyst surface, enhancing NH4+ production. On the other hand, Pd–In catalysts showed higher activity than the Sn catalysts, as well as higher NH4+ selectivity. The stability of the Pd–Sn/Al2O3 (1.5–1 wt.%) catalyst was evaluated in long-term experiments for the treatment of synthetic water (100 mg L−1 NO3−) and three different commercial drinking waters. This Pd–Sn/Al2O3 catalyst achieved a stable nitrate conversion for a duration of 50 h in the synthetic water treatment. However, the catalyst showed a significant activity loss in the presence of other ions (different to NO3−) in the reaction medium, increasing slightly the selectivity to NH4+.
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21
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Jiang G, Ouyang J, Li X, Liu Z, lu: X, Jiang Y, Zhao Y, Dong F. 稳定化缺电子Cuδ+活性点位电催化还原水体硝氮研究. CHINESE SCIENCE BULLETIN-CHINESE 2022. [DOI: 10.1360/tb-2022-0408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Sanchis I, Diaz E, Pizarro A, Rodriguez J, Mohedano A. Nitrate reduction with bimetallic catalysts. A stability-addressed overview. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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23
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Jiao Z, Zhou Y, Miao Z, Wen X, Yun Y. Research on catalytic denitrification by zero-valent iron (Fe0) and Pd-Ag catalyst. PLoS One 2022; 17:e0266057. [PMID: 35427386 PMCID: PMC9012368 DOI: 10.1371/journal.pone.0266057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 03/11/2022] [Indexed: 11/19/2022] Open
Abstract
This study primarily focused on how to effectively remove nitrate by catalytic denitrification through zero-valent iron (Fe0) and Pd-Ag catalyst. Response surface methodology (RSM), instead of the single factor experiments and orthogonal tests, was firstly applied to optimize the condition parameters of the catalytic process. Results indicated that RSM is accurate and feasible for the condition optimization of catalytic denitrification. Better catalytic performance (71.6% N2 Selectivity) was obtained under the following conditions: 5.1 pH, 127 min reaction time, 3.2 mass ration (Pd: Ag), and 4.2 g/L Fe0, which was higher than the previous study designed by single factor experiments and orthogonal tests, 68.1% and 68.7% of N2 Selectivity, respectively. However, under this optimal conditions, N2 selectivity showed a mild decrease (69.3%), when the real wastewater was used as influent. Further study revealed that cations (K+, Na+, Ca2+, Mg2+, and Al3+) and anions (Cl-, HCO3-, and SO42-) exist in wastewater could have distinctive influence on N2 selectivity. Finally, the reaction mechanism and kinetic model of catalytic denitrification were further studied.
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Affiliation(s)
- Zhen Jiao
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, China
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Yu Zhou
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Zhijia Miao
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Xueyou Wen
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Yupan Yun
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
- * E-mail:
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24
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Xu H, Ma Y, Chen J, Zhang WX, Yang J. Electrocatalytic reduction of nitrate - a step towards a sustainable nitrogen cycle. Chem Soc Rev 2022; 51:2710-2758. [PMID: 35274646 DOI: 10.1039/d1cs00857a] [Citation(s) in RCA: 139] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Nitrate enrichment, which is mainly caused by the over-utilization of fertilisers and industrial sewage discharge, is a major global engineering challenge because of its negative influence on the environment and human health. To solve this serious problem, many technologies, such as the activated sludge method, reverse osmosis, ion exchange, adsorption, and electrodialysis, have been developed to reduce the nitrate levels in water bodies. However, the applications of these traditional techniques are limited by several drawbacks, such as a long sludge retention time, slow kinetics, and undesirable by-products. From an environmental perspective, the most promising nitrate reduction technology is enabled to convert nitrate into benign N2, and features low cost, high efficiency, and environmental friendliness. Recently, electrocatalytic nitrate reduction has been proven by satisfactory research achievements to be one of the most promising methods among these technologies. This review provides a comprehensive account of nitrate reduction using electrocatalysis methods. The fundamentals of electrocatalytic nitrate reduction, including the reaction mechanisms, reactor design principles, product detection methods, and performance evaluation methods, have been systematically summarised. A detailed introduction to electrocatalytic nitrate reduction on transition metals, especially noble metals and alloys, Cu-based electrocatalysts, and Fe-based electrocatalysts is provided, as they are essential for the accurate reporting of experimental results. The current challenges and potential opportunities in this field, including the innovation of material design systems, value-added product yields, and challenges for products beyond N2 and large-scale sewage treatment, are highlighted.
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Affiliation(s)
- Hui Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Yuanyuan Ma
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Jun Chen
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute of Innovative Materials, Innovation Campus, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Wei-Xian Zhang
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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25
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Nurlan N, Akmanova A, Hamid S, Lee W. Competitive inhibition of catalytic nitrate reduction over Cu-Pd-hematite by groundwater oxyanions. CHEMOSPHERE 2022; 290:133331. [PMID: 34922954 DOI: 10.1016/j.chemosphere.2021.133331] [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: 09/22/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
The presence of various oxyanions in the groundwater could be the main challenge for the successive application of Cu-Pd-hematite bimetallic catalyst to aqueous NO3- reduction due to the inhibition of its catalytic reactivity and alteration of product selectivity. The batch experiments showed that the reduction kinetics of NO3- was strongly suppressed by ClO4-, PO43-, BrO3- and SO32- at low concentrations (>5 mg/L) and HCO3-, CO32-, SO42- and Cl- at high concentrations (20-500 mg/L). The presence of anions significantly changing the end-product selectivities influenced high N2 selectivity. The selectivity toward N2 increased from 55% to 60%, 60%, and 70% as the concentrations of PO43-, SO32-, and SO42- increased, respectively. It decreased from 55% to 35% in the presence of HCO3- and CO32- in their concentration range of 0-500 mg/L. The production of NO2- was generally not detected, while the formation of NH4+ was observed as the second by-product. It was found that the presence of oxyanions in the NO3- reduction influenced the reactivity and selectivity of bimetallic catalysts by i) competing for active sites (PO43-, SO32-, and BrO3- cases) due to their similar structure, ii) blockage of the promoter and/or noble metal (HCO3-, CO32-, SO42-, Cl- and ClO4- cases), and iii) interaction with the support surface (PO43- case). The results can provide a new insight for the successful application of catalytic NO3- reduction technology with high N2 selectivity to the contaminated groundwater system.
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Affiliation(s)
- Nurbek Nurlan
- Green Energy and Environmental Laboratory, National Laboratory Astana, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
| | - Ainash Akmanova
- Green Energy and Environmental Laboratory, National Laboratory Astana, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
| | - Shanawar Hamid
- Environmental Sustainability Research Center, Department of Agricultural Engineering, Faculty of Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan.
| | - Woojin Lee
- Green Energy and Environmental Laboratory, National Laboratory Astana, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan; Department of Civil and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan.
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26
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Beagan DM, Cabelof AC. Recent advances in metal-mediated nitrogen oxyanion reduction using reductively borylated and silylated N-heterocycles. Dalton Trans 2022; 51:2203-2213. [PMID: 35044399 DOI: 10.1039/d1dt03740d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reduction of nitrogen oxyanions is critical for the remediation of eutrophication caused by anthropogenic perturbations to the natural nitrogen cycle. There are many approaches to nitrogen oxyanion reduction, and here we report our advances in reductive deoxygenation using pre-reduced N-heterocycles. We show examples of nitrogen oxyanion reduction using Cr, Fe, Co, Ni, and Zn, and we evaluate the role of metal choice, number of coordinated oxyanions, and ancillary ligands on the reductive transformations. We report the experimental challenges faced and provide an outlook on new directions to repurpose nitrogen oxyanions into value-added products.
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Affiliation(s)
- Daniel M Beagan
- Department of Chemistry, Indiana University Bloomington, Bloomington, Indiana, USA
| | - Alyssa C Cabelof
- Department of Chemistry, Indiana University Bloomington, Bloomington, Indiana, USA
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27
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Jaworski MA, Navas M, Bertolini GR, Peroni MB, Cabello CI, Gazzoli D, Casella ML. Catalytic hydrogenation of nitrate in water: improvement of the activity and selectivity to N 2 by using Rh(III)-hexamolybdate supported on ZrO 2-Al 2O 3. ENVIRONMENTAL TECHNOLOGY 2022; 43:560-571. [PMID: 32674688 DOI: 10.1080/09593330.2020.1797895] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 05/17/2020] [Indexed: 06/11/2023]
Abstract
Catalysts prepared on ZrO2, Al2O3 and ZrO2-Al2O3 (ZrAl-10) supported with Anderson heteropolyanion (RhMo6) as active phase were investigated for the elimination of NO3- from water. Raman characterization of pure and supported RhMo6 phase showed the presence of polymolybdic species of different degrees of complexity when RhMo6 was supported. The temperature-programmed reduction study revealed the synergic effect between Rh and Mo species, through which the reducibility of Mo was promoted by Rh, and different phase/support interactions were verified. Among the supports, ZrAl-10 presented the highest acidity due to the presence of ZrO2 in the tetragonal modification and high specific surface area (due to Al2O3), favouring rhodium-molybdenum active phase/support interaction and high dispersion. All catalysts prepared were active in removing NO3-, the one prepared with the RhMo6 phase on the ZrAl-10 support being the most active. These results point to the formation of an active surface with a high dispersion of Rh and Mo. The highest selectivity to N2 (99.3) exhibited by the RhMo6/ZrAl-10 catalyst is proposed to be related to the high Rh dispersion (0.755) and to the presence of Lewis acid sites (oxygen vacancies) of the tetragonal ZrO2 modification that favour NO3- adsorption through electrostatic interactions.
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Affiliation(s)
- María A Jaworski
- Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA), CCT-CONICET La Plata, Universidad Nacional de La Plata and Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
- Facultad de Ingeniería, Universidad Nacional de La Plata, La Plata, Argentina
| | - Marisa Navas
- Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA), CCT-CONICET La Plata, Universidad Nacional de La Plata and Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
| | - Guillermo R Bertolini
- Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA), CCT-CONICET La Plata, Universidad Nacional de La Plata and Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
| | - María B Peroni
- Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA), CCT-CONICET La Plata, Universidad Nacional de La Plata and Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
- Facultad de Ingeniería, Universidad Nacional de La Plata, La Plata, Argentina
| | - Carmen I Cabello
- Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA), CCT-CONICET La Plata, Universidad Nacional de La Plata and Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
- Facultad de Ingeniería, Universidad Nacional de La Plata, La Plata, Argentina
- Miembro CIC, Comisión de Investigaciones Científicas y Técnicas, Argentina
| | - Delia Gazzoli
- Dipartimento di Chimica, La Sapienza Università di Roma, Roma, Italy
| | - Mónica L Casella
- Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco" (CINDECA), CCT-CONICET La Plata, Universidad Nacional de La Plata and Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
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28
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Xu P, Agarwal S, Lefferts L. Formic acid generating in-situ H2 and CO2 for nitrite reduction in aqueous phase. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01448j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aim of this work is to explore and to understand the effect of pH, concentrations and presence of oxygen traces on reduction nitrite in drinking water with Pd/γ-Al2O3, using...
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Varapragasam SP, Andriolo JM, Skinner JL, Grumstrup EM. Photocatalytic Reduction of Aqueous Nitrate with Hybrid Ag/g-C 3N 4 under Ultraviolet and Visible Light. ACS OMEGA 2021; 6:34850-34856. [PMID: 34963968 PMCID: PMC8697391 DOI: 10.1021/acsomega.1c05523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
The concentration of nitrate in natural surface waters by agricultural runoff remains a challenging problem in environmental chemistry. One promising denitrification strategy is to utilize photocatalysts, whose light-driven excited states are capable of reducing nitrate to nitrogen gas. We have synthesized and characterized pristine and silver-loaded graphitic carbon nitrides and assessed their activity for photocatalytic nitrate reduction at neutral pH. While nitrate reduction does occur on the pristine material, the silver cocatalyst greatly enhances product yields. Kinetic studies performed in batch photoreactors under both UV and visible excitation suggest that nitrate reduction to produce aqueous nitrite, ammonium, and nitrogen gas proceeds via a cooperative water reduction on the silver metal domains to produce adsorbed H atoms. By varying the percentage of silver loading onto the g-C3N4, the density of metal domains can be adjusted, which in turn tunes the reduction selectivity toward various products.
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Affiliation(s)
- Shelton
J. P. Varapragasam
- Department
of Chemistry and Biochemistry, Montana State
University, Bozeman, Montana 59717, United States
| | - Jessica M. Andriolo
- Department
of Mechanical Engineering, Montana Technological
University, Butte, Montana 59701, United
States
| | - Jack L. Skinner
- Department
of Mechanical Engineering, Montana Technological
University, Butte, Montana 59701, United
States
| | - Erik M. Grumstrup
- Department
of Chemistry and Biochemistry, Montana State
University, Bozeman, Montana 59717, United States
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30
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Min B, Gao Q, Yan Z, Han X, Hosmer K, Campbell A, Zhu H. Powering the Remediation of the Nitrogen Cycle: Progress and Perspectives of Electrochemical Nitrate Reduction. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03072] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bokki Min
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States,
| | - Qiang Gao
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States,
| | - Zihao Yan
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States,
| | - Xue Han
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States,
| | - Kait Hosmer
- Department of Biological Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States,
| | - Alayna Campbell
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States,
| | - Huiyuan Zhu
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States,
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31
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Tokazhanov G, Han S, Lee W. Enhanced catalytic reduction of p-nitrophenol by nano zerovalent iron - supported metal catalysts. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106337] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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32
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Shi J, Gao Y, Zang L, Shen Z, Peng G. Performance of Pd/Sn catalysts supported by chelating resin prestoring reductant for nitrate reduction in actual water. ENVIRONMENTAL RESEARCH 2021; 201:111577. [PMID: 34228952 DOI: 10.1016/j.envres.2021.111577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/30/2021] [Accepted: 06/20/2021] [Indexed: 06/13/2023]
Abstract
Catalytic hydrogen reduction has appeared as a promising strategy for chemical denitrification with advantages of high activity and simple operation. However, the risk and low utilization of H2 is the disadvantage of catalytic hydrogen reduction. In recent years, catalytic reduction reactions in the presence of sodium borohydride (NaBH4) have been extensively studied. NaBH4 can be used as an electron source to generate electrons on the surface of the catalyst and can catalyze the reduction of pollutants. But it makes commercialization costly and causes significant environmental pollution if widely use NaBH4. In this study, we prepared supported Pd/Sn bimetallic nanoparticles which could adsorb NaBH4 during the preparation of the Pd/Sn bimetallic catalyst as the prestoring reductant. No additional reducing agent is required during nitrate reduction process. The performance and mechanism for nitrate reduction by using Pd/Sn bimetallic nanoparticles were discussed. Moreover, the catalyst D-Pd1/Sn1 reached a complete nitrate removal in the municipal wastewater treatment plant effluent water within 3 h. The results provide a prospect for denitrification in biological wastewater treatment plants.
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Affiliation(s)
- Jialu Shi
- Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, 64 East of Construction Road, Xinxiang, 453007, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210046, China.
| | - Ya Gao
- Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, 64 East of Construction Road, Xinxiang, 453007, China
| | - Ling Zang
- Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, 64 East of Construction Road, Xinxiang, 453007, China; School of Civil Engineering, Southeast University, Nanjing, 211189, China
| | - Zhanhui Shen
- Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, 64 East of Construction Road, Xinxiang, 453007, China; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210046, China
| | - Gege Peng
- Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, 64 East of Construction Road, Xinxiang, 453007, China
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33
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Denitrification on PdCu-AC with hydrogen from electrocatalytic water splitting. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04540-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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34
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Beltrame TF, Zoppas FM, Ferreira JZ, Marchesini FA, Bernardes AM. Nitrate reduction by electrochemical processes using copper electrode: evaluating operational parameters aiming low nitrite formation. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:200-215. [PMID: 34280164 DOI: 10.2166/wst.2021.215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This work aims to present different electroreduction and electrocatalytic processes configurations to treat nitrate contaminated water. The parameters tested were: current density, cell potential, electrode potential, pH values, cell type and catalyst use. It was found that the nitrite ion is present in all process variations used, being the resulting nitrite concentration higher in an alkaline pH. The increase in current density on galvanostatic operation mode provides a greater reduction of nitrate (64%, 1.4 mA cm-2) if compared to the potentiostatic (20%) and constant cell potential (37%) configurations. In a dual-chamber cell the nitrate reduction with current density of 1.4 mA cm-2 was tested and obtained as a NO3- reduction of 85%. The use of single chamber cell presented 32 ± 3% of nitrate reduction, indicating that in this cell type the nitrate reduction is smaller than in dual-chamber cell (64%). The presence of a Pd catalyst with 3.1% wt. decreased the nitrite (1.0 N-mg L-1) and increased the gaseous compounds (9.4 N-mg L-1) formation. The best configuration showed that, by fixing the current density, the highest nitrate reduction is obtained and the pH presents a significant influence during the tests. The use of the catalyst decreased the nitrite and enhanced the gaseous compounds formation.
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Affiliation(s)
- T F Beltrame
- Laboratório de Corrosão, Proteção e Reciclagem de Materiais LACOR-UFRGS (Universidade Federal do Rio Grande do Sul), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil
| | - F M Zoppas
- Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE-CONICET), Santiago del Estero 2829, CP 3000, Santa Fe, Argentina
| | - J Z Ferreira
- Laboratório de Corrosão, Proteção e Reciclagem de Materiais LACOR-UFRGS (Universidade Federal do Rio Grande do Sul), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil
| | - F A Marchesini
- Instituto de Investigaciones en Catálisis y Petroquímica (INCAPE-CONICET), Santiago del Estero 2829, CP 3000, Santa Fe, Argentina
| | - A M Bernardes
- Laboratório de Corrosão, Proteção e Reciclagem de Materiais LACOR-UFRGS (Universidade Federal do Rio Grande do Sul), Av. Bento Gonçalves, 9500, Porto Alegre, RS, Brazil
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Liu X, Wei J, Hou L, Zhu Y, Wu Y, Xing L, Zhang Y, Li J. Feasibility of nanoscale zerovalent iron-loaded sediment-based biochar (nZVI-SBC) for simultaneous removal of nitrate and phosphate: high selectivity toward dinitrogen and synergistic mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:37448-37458. [PMID: 33715122 DOI: 10.1007/s11356-021-13322-w] [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: 12/10/2020] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
In the process of water treatment, excessive nitrogen and phosphorus pollutants are of great concern. Therefore, we prepared nanoscale zerovalent iron loaded on sediment-based biochar (nZVI-SBC) to conduct nitrate and phosphate removal at the same time. The characterization demonstrated that nZVI-SBC was successfully synthesized, which had obvious advantages for larger specific surface area and better dispersion compared with pure nZVI. The batch experiments indicated that the best loading ratio of nZVI to SBC and optimum dosage for nitrate and phosphate were 1:1and 2 g L-1, respectively. Their removal by nZVI-SBC was an acid-driven process. Anoxic environment was more conducive to the reduction of nitrate while the phosphate removal was fond of oxygen environment. A total of 77.78% of nitrate and 99.21% of phosphate have been successfully removed, mainly depending on reduction and complexation mechanism, respectively. Moreover, nZVI-SBC had higher N2 selectivity and produced less ammonium than nZVI. The interaction between nitrate and phosphate was studied to manifest that they had different degrees of inhibition during the removal of the other. Our research indicated that nZVI-SBC has great potential for remediation of nitrogen and phosphorus polluted water.
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Affiliation(s)
- Xiaohui Liu
- College of Architecture Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang district, Beijing, 100124, China
| | - Jia Wei
- College of Architecture Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang district, Beijing, 100124, China.
| | - Liangang Hou
- College of Architecture Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang district, Beijing, 100124, China
| | - Yuhan Zhu
- College of Architecture Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang district, Beijing, 100124, China
| | - Yaodong Wu
- College of Architecture Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang district, Beijing, 100124, China
| | - Luyi Xing
- College of Architecture Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang district, Beijing, 100124, China
| | - Yifei Zhang
- College of Architecture Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang district, Beijing, 100124, China
| | - Jun Li
- College of Architecture Engineering, Beijing University of Technology, 100 Pingleyuan, Chaoyang district, Beijing, 100124, China
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Zhou D, Luo YH, Zheng CW, Long M, Long X, Bi Y, Zheng X, Zhou C, Rittmann BE. H 2-Based Membrane Catalyst-Film Reactor (H 2-MCfR) Loaded with Palladium for Removing Oxidized Contaminants in Water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:7082-7093. [PMID: 33900089 DOI: 10.1021/acs.est.1c01189] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Scalable applications of precious-metal catalysts for water treatment face obstacles in H2-transfer efficiency and catalyst stability during continuous operation. Here, we introduce a H2-based membrane catalyst-film reactor (H2-MCfR), which enables in situ reduction and immobilization of a film of heterogeneous Pd0 catalysts that are stably anchored on the exterior of a nonporous H2-transfer membrane under ambient conditions. In situ immobilization had >95% yield of Pd0 in controllable forms, from isolated single atoms to moderately agglomerated nanoparticles (averaging 3-4 nm). A series of batch tests documented rapid Pd-catalyzed reduction of a wide spectrum of oxyanions (nonmetal and metal) and organics (e.g., industrial raw materials, solvents, refrigerants, and explosives) at room temperature, owing to accurately controlled H2 supply on demand. Reduction kinetics and selectivity were readily controlled through the Pd0 loading on the membranes, H2 pressure, and pH. A 45-day continuous treatment of trichloroethene (TCE)-contaminated water documented removal fluxes up to 120 mg-TCE/m2/d with over 90% selectivity to ethane and minimal (<1.5%) catalyst leaching or deactivation. The results support that the H2-MCfR is a potentially sustainable and reliable catalytic platform for reducing oxidized water contaminants: simple synthesis of an active and versatile catalyst that has long-term stability during continuous operation.
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Affiliation(s)
- Dandan Zhou
- Engineering Lab for Water Pollution Control and Resources Recovery of Jilin Province, School of Environment, Northeast Normal University, Changchun 130021, China
| | - Yi-Hao Luo
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Chen-Wei Zheng
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Min Long
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Xiangxing Long
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Yuqiang Bi
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Xiong Zheng
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Chen Zhou
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
| | - Bruce E Rittmann
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, Tempe, Arizona 85287-5701, United States
- Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment, Arizona State University, Tempe, Arizona 85287-5701, United States
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37
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Wang Z, Chen G, Wang X, Yang G, Liu Y, Zhang C. Performance of L-Cu&Mn-nZVFe@B nanomaterial on nitrate selective reduction under UV irradiation and persulfate activation in the presence of oxalic acid. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123378. [PMID: 32659583 DOI: 10.1016/j.jhazmat.2020.123378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 05/31/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
A novel nanomaterial (L-Cu&Mn-nZVFe@B) was synthesized and was applied to nitrate selective reduction under UV irradiation and persulfate activation in the presence of oxalic acid. Results denoted the deposition of copper could prompt the nitrate conversion and improve the nitrate conversion significantly. The high nitrate conversion was on account of the formation of galvanic cells accelerating the generation of electrons, in which Fe° acted as anode and Cu° acted as cathode. Meanwhile, the coexistence of Cu2O and MnO2 exhibited excellent photocatalytic performance with the obvious improvement of N2 selectivity because of the formation of heterojunction could boost the generation of CO2-. Furthermore, the deposition of manganese could also accelerate the generation of CO2- through the activation of persulfate. The conversion of NO3- was almost 100 % and the N2 selectivity could reach 81.57 % by the S2O82-/UV/L-Cu&Mn-nZVFe@B/H2C2O4 system when the initial nitrate concentration was 100 mg /L, the L-Cu&Mn-nZVFe@B dosage was 6.0 g/L, the H2C2O4 dosage was 15 mmol/L, pH was 5.0, the reaction time was 100 min under 25 °C. Research provides an alternative approach for selective reduction nitrate into nitrogen.
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Affiliation(s)
- Zhen Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China; School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China.
| | - Guanghui Chen
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China; School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China
| | - Xinrui Wang
- School of Chemical and Chemical Engineering, University of Jinan, Jinan, Shandong Province, 250022, PR China
| | - Guihua Yang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China
| | - Yu Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China
| | - Chao Zhang
- School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China
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Zhou C, Bai J, Zhang Y, Li J, Li Z, Jiang P, Fang F, Zhou M, Mei X, Zhou B. Novel 3D Pd-Cu(OH) 2/CF cathode for rapid reduction of nitrate-N and simultaneous total nitrogen removal from wastewater. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123232. [PMID: 32653780 DOI: 10.1016/j.jhazmat.2020.123232] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 05/23/2020] [Accepted: 06/14/2020] [Indexed: 06/11/2023]
Abstract
Removal of NO3- is a challenging problem in wastewater treatment. Electrocatalysis shows a great potential to remove NO3- but selectively converting NO3- to N2 is facing a low efficiency. Here, a novel 3D Pd-Cu(OH)2/CF cathode based electrocatalytic (EC) system was proposed that can rapidly and selectively convert NO3- to NH4+, and further convert to N2 simultaneously. The special designs for the system include: Cu(OH)2 nanowires were firstly grown on copper foam (CF) with excellent conductivity that features high specific surface area in enhancing NO3- absorption and conversion to NO2-. Then, palladium (Pd) with a superior photons activation capacity was doped on the Cu(OH)2 nanowires to promote the reduction of NO2- to NH4+. Then NH4+ was quickly oxidized into N2 by active chlorine. Finally, total nitrogen (TN) could easily be removed completely via above exhaustive cycle reactions. The 3D Pd-Cu(OH)2/CF cathode exhibits a 98.8 % conversion of NO3- to NH4+ in 45 min with the reported highest removal rate of 0.017 cm-2 min-1, which is 19.4 times higher than that of CF. The converted NH4+ was finally exhaustively oxidized to N2 with a 98.7 % of TN removal in 60 min.
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Affiliation(s)
- Changhui Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Jing Bai
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Yan Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Jinhua Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.
| | - Zhijing Li
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Panyu Jiang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Fei Fang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Mengyang Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xiaojie Mei
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Baoxue Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China; Key Laboratory of Thin Film and Microfabrication Technology, Ministry of Education, Shanghai 200240, PR China; Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake-Watershed, Yunnan 650034, PR China.
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Mosleh I, Abbaspourrad A. Peptide-directed Pd-decorated Au and PdAu nanocatalysts for degradation of nitrite in water. RSC Adv 2021; 11:32615-32621. [PMID: 35493599 PMCID: PMC9042164 DOI: 10.1039/d1ra05304c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/29/2021] [Indexed: 01/18/2023] Open
Abstract
In this work, a palladium binding peptide, Pd4, has been used for the synthesis of catalytically active palladium-decorated gold (Pd-on-Au) nanoparticles (NPs) and palladium–gold (PdxAu100−x) alloy NPs exhibiting high nitrite degradation efficiency. Pd-on-Au NPs with 20% to 300% surface coverage (sc%) of Au showed catalytic activity commensurate with sc%. Additionally, the catalytic activity of PdxAu100−x alloy NPs varied based on palladium composition (x = 6–59). The maximum nitrite removal efficiency of Pd-on-Au and PdxAu100−x alloy NPs was obtained at sc 100% and x = 59, respectively. The synthesized peptide-directed Pd-on-Au catalysts showed an increase in nitrite reduction three and a half times better than monometallic Pd and two and a half times better than PdxAu100−x NPs under comparable conditions. Furthermore, peptide-directed NPs showed high activity after five reuse cycles. Pd-on-Au NPs with more available activated palladium atoms showed high selectivity (98%) toward nitrogen gas production over ammonia. In this work, a palladium binding peptide, Pd4, has been used for the synthesis of catalytically active palladium-decorated gold (Pd-on-Au) nanoparticles (NPs) and palladium–gold (PdxAu100−x) alloy NPs exhibiting high nitrite degradation efficiency.![]()
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Affiliation(s)
- Imann Mosleh
- Department of Food Science, College of Agricultural and Life Sciences, Cornell University, Stocking Hall, Ithaca, NY, 14853, USA
| | - Alireza Abbaspourrad
- Department of Food Science, College of Agricultural and Life Sciences, Cornell University, Stocking Hall, Ithaca, NY, 14853, USA
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Quiton KGN, Lu MC, Huang YH. Synthesis and catalytic utilization of bimetallic systems for wastewater remediation: A review. CHEMOSPHERE 2021; 262:128371. [PMID: 33182123 DOI: 10.1016/j.chemosphere.2020.128371] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 09/02/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
The environment is affected by agricultural, domestic, and industrial activities that lead to drastic problems such as global warming and wastewater generation. Wastewater pollution is of public concern, making the treatment of persistent pollutants in water and wastewater highly imperative. Several conventional treatment technologies (physicochemical processes, biological degradation, and oxidative processes) have been applied to water and wastewater remediation, but each has numerous limitations. To address this issue, treatment using bimetallic systems has been extensively studied. This study reviews existing research on various synthesis methods for the preparation of bimetallic catalysts and their catalytic application to the treatment of organic (dyes, phenol and its derivatives, and chlorinated organic compounds) and inorganic pollutants (nitrate and hexavalent chromium) from water and wastewater. The reaction mechanisms, removal efficiencies, operating conditions, and research progress are also presented. The results reveal that Fe-based bimetallic catalysts are one of the most efficient heterogeneous catalysts for the treatment of organic and inorganic contamination. Furthermore, the roles and performances of bimetallic catalysts in the removal of these environmental contaminants are different.
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Affiliation(s)
- Khyle Glainmer N Quiton
- Department of Chemical Engineering, Sustainable Environment Research Center, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ming-Chun Lu
- Department of Environmental Resources Management, Chia Nan University of Pharmacy and Science, Tainan, 71710, Taiwan.
| | - Yao-Hui Huang
- Department of Chemical Engineering, Sustainable Environment Research Center, National Cheng Kung University, Tainan, 701, Taiwan.
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41
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Gholinejad M, Khosravi F, Afrasi M, Sansano JM, Nájera C. Applications of bimetallic PdCu catalysts. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02339f] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bimetallic PdCu nanoparticles can be applied as catalysts in a wide range of chemical and electrochemical reactions.
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Affiliation(s)
- Mohammad Gholinejad
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
- Research Center for Basic Sciences & Modern Technologies (RBST)
| | - Faezeh Khosravi
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
| | - Mahmoud Afrasi
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
| | - José M. Sansano
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
- Departamento de Química Orgánica e Instituto de Síntesis Orgánica
| | - Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
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42
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Wang Z, Ortiz EM, Goldsmith BR, Singh N. Comparing electrocatalytic and thermocatalytic conversion of nitrate on platinum–ruthenium alloys. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01075a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Comparison between thermocatalytic and electrocatalytic nitrate reduction reactions highlights mechanistic similarities and differences between the two reactions.
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Affiliation(s)
- Zixuan Wang
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
- Catalysis Science and Technology Institute, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
| | - Evan M. Ortiz
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
- Catalysis Science and Technology Institute, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
| | - Bryan R. Goldsmith
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
- Catalysis Science and Technology Institute, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
| | - Nirala Singh
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
- Catalysis Science and Technology Institute, University of Michigan, Ann Arbor, Michigan 48109-2136, USA
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43
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Li K, Chen C, Bian X, Sun T, Jia J. Electrolytic nitrate reduction using Co3O4 rod-like and sheet-like cathodes with the control of (220) facet exposure and Co2+/Co3+ ratio. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137121] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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44
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Cu+ based active sites of different oxides supported Pd-Cu catalysts and electrolytic in-situ H2 evolution for high-efficiency nitrate reduction reaction. J Catal 2020. [DOI: 10.1016/j.jcat.2020.10.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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45
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Chen X, Zhang T, Kan M, Song D, Jia J, Zhao Y, Qian X. Binderless and Oxygen Vacancies Rich FeNi/Graphitized Mesoporous Carbon/Ni Foam for Electrocatalytic Reduction of Nitrate. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:13344-13353. [PMID: 32993297 DOI: 10.1021/acs.est.0c05631] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Energy consumption and long-term stability of a cathode are two important aspects of great concern in electrocatalytic nitrate reduction. This work studied a binderless FeNi/graphitized mesoporous carbon directly formed on Ni Foam (FeNi/g-mesoC/NF, 7.3 wt % of Fe) and evaluated its electrocatalytic nitrate reduction performance. We proposed a unique structure model of FeNi/g-mesoC/NF cathode in which FeNi alloy nanoparticles were uniformly embedded in mesoporous carbon and graphitized carbon shells were coated on isolated alloy nanoparticles. Oxygen vacancies (OVs) in FeNi oxide passivating layer facilitate the conversion of NO3--N anions on cathode. Toxic NO2--N was almost undetected due to the synergetic effects of FeNi electrocatalysis, and the NO3--N conversion was high in comparation with ever reported iron-based cathode. The NO3--N conversion showed ultrahigh electrocatalytic stability during one-month-recycling test while the physiochemical properties showed negligible change for FeNi/g-mesoC/NF except the increase of OVs. The energy consumption to treat simulated underground water (50% of NO3--N conversion) was low (0.7 kWh mol-1) for 50 mg L-1 NO3--N. This binderless composite cathode shows great potential in electrocatalytic NO3--N removal in underground water.
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Affiliation(s)
- Xiaotong Chen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Ting Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Miao Kan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Dinggui Song
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Jinping Jia
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Yixin Zhao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, P.R. China
| | - Xufang Qian
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
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46
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Effect and mechanism of graphene structured palladized zero-valent iron nanocomposite (nZVI-Pd/NG) for water denitration. Sci Rep 2020; 10:9931. [PMID: 32555218 PMCID: PMC7303133 DOI: 10.1038/s41598-020-66725-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 03/02/2020] [Indexed: 11/08/2022] Open
Abstract
Nitrate reduction by zero-valent iron-based materials has been extensively studied. However, the aggregation of nanoparticles and the preference for unfavored ammonia products limit the application of this technology. To overcome this issue, this study introduced a novel synthesized nanoscale palladized zero-valent iron graphene composite (nZVI-Pd/NG) and explored its nitrate reduction efficiency. A nitrate removal rate of 97.0% was achieved after 120 min of reaction for an initial nitrate concentration of 100 mg N/L. The nitrogen gas selectivity was enhanced from 0.4% to 15.6% at the end point compared to nanoscale zero-valent iron (nZVI) particles under the same conditions. Further analyses revealed that zero-valent metal nanoparticles spread uniformly on the graphene surface, with a thin layer of iron (hydr)oxides dominated by magnetite. The nZVI-Pd/NG exhibited good catalytic activity with the associated activation energy of 17.6 kJ/mol being significantly lower than that with nZVI (42.8 kJ/mol). The acidic condition promoted a higher nZVI utilization rate, with the excess dosage of nZVI-Pd/NG ensuring a high nitrate removal rate for a wide pH range. This study demonstrates an improvement in nitrate reduction efficiency in a nZVI system by combining the exceptional properties of graphene and palladium.
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47
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Huo X, Vanneste J, Cath TY, Strathmann TJ. A hybrid catalytic hydrogenation/membrane distillation process for nitrogen resource recovery from nitrate-contaminated waste ion exchange brine. WATER RESEARCH 2020; 175:115688. [PMID: 32171095 DOI: 10.1016/j.watres.2020.115688] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/26/2020] [Accepted: 03/02/2020] [Indexed: 06/10/2023]
Abstract
Ion exchange is widely used to treat nitrate-contaminated groundwater, but high salt usage for resin regeneration and management of waste brine residuals increase treatment costs and add environmental burdens. Development of palladium-based catalytic nitrate treatment systems for brine treatment and reuse has showed promising activity for nitrate reduction and selectivity towards the N2 over the alternative product ammonia, but this strategy overlooks the potential value of nitrogen resources. Here, we evaluated a hybrid catalytic hydrogenation/membrane distillation process for nitrogen resource recovery during treatment and reuse of nitrate-contaminated waste ion exchange brines. In the first step of the hybrid process, a Ru/C catalyst with high selectivity towards ammonia was found to be effective for nitrate hydrogenation under conditions representative of waste brines, including expected salt buildup that would occur with repeated brine reuse cycles. The apparent rate constants normalized to metal mass (0.30 ± 0.03 mM min-1 gRu-1 under baseline condition) were comparable to the state-of-the-art bimetallic Pd catalyst. In the second stage of the hybrid process, membrane distillation was applied to recover the ammonia product from the brine matrix, capturing nitrogen as ammonium sulfate, a commercial fertilizer product. Solution pH significantly influenced the rate of ammonia mass transfer through the gas-permeable membrane by controlling the fraction of free ammonia species (NH3) present in the solution. The rate of ammonia recovery was not affected by increasing salt levels in the brine, indicating the feasibility of membrane distillation for recovering ammonia over repeated reuse cycles. Finally, high rates of nitrate hydrogenation (apparent rate constant 1.80 ± 0.04 mM min-1 gRu-1) and ammonia recovery (overall mass transfer coefficient 0.20 m h-1) with the hybrid treatment process were demonstrated when treating a real waste ion exchange brine obtained from a drinking water utility. These findings introduce an innovative strategy for recycling waste ion exchange brine while simultaneously recovering potentially valuable nitrogen resources when treating contaminated groundwater.
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Affiliation(s)
- Xiangchen Huo
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, USA
| | - Johan Vanneste
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, USA
| | - Tzahi Y Cath
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, USA
| | - Timothy J Strathmann
- Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO, USA.
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48
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Liu Z, Dong S, Zou D, Ding J, Yu A, Zhang J, Shan C, Gao G, Pan B. Electrochemically mediated nitrate reduction on nanoconfined zerovalent iron: Properties and mechanism. WATER RESEARCH 2020; 173:115596. [PMID: 32062228 DOI: 10.1016/j.watres.2020.115596] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/19/2020] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
Selective reduction of nitrate to N2 is attractive but still a difficult challenge in the water treatment field. Herein, we established a flow-through electrochemical system packed with polymeric beads supported nZVI (nZVI@D201) for selective nitrate reduction. Consequently, efficient nitrate reduction in the flow mode was achieved on nZVI@D201 under electrochemical regulation with N2 selectivity of up to 95% for at least 60 h. Otherwise, nZVI was gradually exhausted after 20 h, and the product was mainly the undesired NH4+. Through a series of comparative experiments, we clarified that the enhanced nitrate reduction on nZVI under electrochemical regulation was mainly attributed to electrons (from cathode) and active hydrogen ([H]) rather than the previously speculated H2. Combining the characterizations of nZVI during nitrate reduction by X-ray diffraction and X-ray photoelectron spectrometry, we found that nitrate reduction under electrochemical regulation was mediated by nZVI along with the resultant Fe0@FexOy-Fe(II) structure and was sustained by electrons (from cathode) and [H] via the in situ reduction of Fe(III) back to Fe(II). Meanwhile, the undesirable product NH4+ was efficiently oxidized to N2 by the active chlorine generated on the anode. This study not only clarifies the mechanism of enhanced nitrate reduction on nZVI via electrochemical regulation but also advances the technological coupling of nZVI reduction with electrochemistry.
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Affiliation(s)
- Zhenwei Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China
| | - Shangshang Dong
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China
| | - Di Zou
- Tianjin Academy of Environmental Sciences, Tianjin, 300191, China
| | - Jie Ding
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China
| | - Anqing Yu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China
| | - Jing Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China
| | - Chao Shan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing, 210023, China.
| | - Guandao Gao
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing, 210023, China.
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210023, China; Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing, 210023, China
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Shen Z, Zhang Y, Zhou C, Bai J, Chen S, Li J, Wang J, Guan X, Rahim M, Zhou B. Exhaustive denitrification via chlorine oxide radical reactions for urea based on a novel photoelectrochemical cell. WATER RESEARCH 2020; 170:115357. [PMID: 31812812 DOI: 10.1016/j.watres.2019.115357] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 11/18/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
Urea is a major source of nitrogen pollution in domestic sewage and its denitrification is difficult since it is very likely to be converted into ammonia or nitrate instead of expected N2. Herein, we propose an exhaustive denitrification method for urea via the oxidation of amine/ammonia-N with chlorine oxide radical, which induced from a bi-functional RuO2//WO3 anode, and the highly selective reduction of nitrate-N on cathode in photoelectrochemical cell (PEC). Under illumination, the WO3 photoanode side promotes the quantities hydroxyl and reactive chlorine radical, and these radicals are immediately combined to stronger chlorine oxide radical by RuO2 side, which obviously enhances the efficiency and speed of the urea oxidation. Synchronously, the over-oxidized nitrate can be selectively reduced by Pd and Au nanoparticles on the surface of cathode. Eventually, exhaustive denitrification is realized by the circulative reaction. Experimental observations and theoretical calculation revealed that chlorine oxide radical promoted significant denitrification of urea with an efficiency of 99.74% in 60 min under the optimum condition. The removal rate constant of the RuO2//WO3 anode was 3.08 times than that of single WO3 anode and 2.64 times than that of single RuO2 anode, confirming the chlorine oxide radical had stronger ability on denitrification than reactive chlorine radical. Also, the bi-functional anode contributed to best current efficiencies, utilizing the energy availably. This work proposes a promising method of exhaustive denitrification for urea.
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Affiliation(s)
- Zhaoxi Shen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Yan Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Changhui Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Jing Bai
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Shuai Chen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Jinhua Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China.
| | - Jiachen Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Xiaohong Guan
- College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Mohammadi Rahim
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China; Department of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | - Baoxue Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; Key Laboratory of Thin Film and Microfabrication Technology, Ministry of Education, Shanghai, 200240, PR China; Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake-Watershed, Yunnan, 650034, PR China.
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50
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Tang W, Zhang Y, Bai J, Li J, Wang J, Li L, Zhou T, Chen S, Rahim M, Zhou B. Efficient denitrification and removal of natural organic matter, emerging pollutants simultaneously for RO concentrate based on photoelectrocatalytic radical reaction. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116032] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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