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Bayode AA, Ore OT, Nnamani EA, Sotunde B, Koko DT, Unuabonah EI, Helmreich B, Omorogie MO. Perovskite Oxides: Syntheses and Perspectives on Their Application for Nitrate Reduction. ACS OMEGA 2024; 9:19770-19785. [PMID: 38737083 PMCID: PMC11080040 DOI: 10.1021/acsomega.4c01487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/06/2024] [Accepted: 04/12/2024] [Indexed: 05/14/2024]
Abstract
Over the decades, the rise in nitrate levels in the ecosystem has posed a serious threat to the continuous existence of humans, fauna, and flora. The deleterious effects of increasing levels of nitrates in the ecosystem have led to adverse health and environmental implications in the form of methemoglobinemia and eutrophication, respectively. Different pathways/routes for the syntheses of perovskites and their oxides were presented in this review. In recent times, electrocatalytic reduction has emerged as the most utilized technique for the conversion of nitrates into ammonia, an industrial feedstock. According to published papers, the efficiency of various perovskites and their oxides used for the electrocatalytic reduction of nitrate achieved a high Faradaic efficiency of 98%. Furthermore, studies published have shown that there is a need to improve the chemical stability of perovskites and their oxides during scale-up applications, as well as their scalability for industrial applications.
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Affiliation(s)
- Ajibola A. Bayode
- College
of Chemical Engineering, Sichuan University
of Science and Engineering, Zigong 643000, P. R. China
- Department
of Chemical Sciences, Faculty of Natural Sciences, Redeemer’s University, P.M.B. 230, 232101 Ede, Nigeria
| | - Odunayo T. Ore
- Department
of Chemical Sciences, Achiever’s
University, P.M.B. 1030, 341101 Owo, Nigeria
| | - Esther A. Nnamani
- Department
of Chemical Sciences, Faculty of Natural Sciences, Redeemer’s University, P.M.B. 230, 232101 Ede, Nigeria
- Environmental
Science and Technology Unit, African Centre of Excellence for Water
and Environmental Research (ACEWATER), Redeemer’s
University, P.M.B. 230, 232101 Ede, Nigeria
| | - Babajide Sotunde
- Department
of Chemical Sciences, Faculty of Natural Sciences, Redeemer’s University, P.M.B. 230, 232101 Ede, Nigeria
- Environmental
Science and Technology Unit, African Centre of Excellence for Water
and Environmental Research (ACEWATER), Redeemer’s
University, P.M.B. 230, 232101 Ede, Nigeria
| | - Daniel T. Koko
- Department
of Chemical Sciences, Faculty of Natural Sciences, Redeemer’s University, P.M.B. 230, 232101 Ede, Nigeria
- Environmental
Science and Technology Unit, African Centre of Excellence for Water
and Environmental Research (ACEWATER), Redeemer’s
University, P.M.B. 230, 232101 Ede, Nigeria
| | - Emmanuel I. Unuabonah
- Department
of Chemical Sciences, Faculty of Natural Sciences, Redeemer’s University, P.M.B. 230, 232101 Ede, Nigeria
- Environmental
Science and Technology Unit, African Centre of Excellence for Water
and Environmental Research (ACEWATER), Redeemer’s
University, P.M.B. 230, 232101 Ede, Nigeria
| | - Brigitte Helmreich
- Chair
of Urban Water Systems Engineering, School
of Engineering and Design, Technical University of Munich (TUM), 85748 Garching, Germany
| | - Martins O. Omorogie
- Department
of Chemical Sciences, Faculty of Natural Sciences, Redeemer’s University, P.M.B. 230, 232101 Ede, Nigeria
- Environmental
Science and Technology Unit, African Centre of Excellence for Water
and Environmental Research (ACEWATER), Redeemer’s
University, P.M.B. 230, 232101 Ede, Nigeria
- Chair
of Urban Water Systems Engineering, School
of Engineering and Design, Technical University of Munich (TUM), 85748 Garching, Germany
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2
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Shen Z, Tang L, Shi J, Ding L, Wang W, Zhi S, Wu D. Electrocatalytic reduction of nitrate to ammonia by Pd/In modified Nickel foam electrode in aqueous solution. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120719. [PMID: 38520863 DOI: 10.1016/j.jenvman.2024.120719] [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: 11/09/2023] [Revised: 02/27/2024] [Accepted: 03/19/2024] [Indexed: 03/25/2024]
Abstract
Nitrate pollution in surface water and ground water has drawn wide attention, which has brought challenges to human health and natural ecology. Electroreduction of nitrate to NH3 in waste water was a way to turn waste into wealth, which has attracted interest of many researchers. Using Nickel foam as substrate, we prepared Pd/In bimetallic electrode (NF-Pd/In) according to a two-step electrodeposition method. There are many irregularly shaped particles in the size range of 10 nm-100 nm accumulated on the surface of prepared NF-Pd/In electrode, which could supply high specific area and more active sites for nitrate electroreduction. FESEM-EDS, XRD and XPS analysis confirmed the uniform distribution of Pd and In on the surface of prepared NF-Pd/In electrode, with a mass ratio of 4.5/1. Above 96% of 100 mg/L NO3--N was removed and 95% of NH3 selectivity was reached after 5 h of reaction under -1.6 V vs. Ag/AgCl sat. KCl when using 0.05 mol/L of Na2SO4 as electrolyte. High concentration of NaCl (0.05 mol/L) in the test solution dramatically decreased the NH3 selectivity because the produced NH3 could be further oxidized to N2 by the formed HClO from Cl-. EIS tests indicated that the prepared NF-Pd/In electrode showed much lower electrode resistance than NF due to the adsorptive property and electrocatalytic ability for nitrate removal. Density functional theory (DFT) calculations indicated that the presence of In could promote the conversion of NO3- to *NO3 during the process of nitrate electroreduction to NH3. Circulating tests demonstrated the stability of prepared NF-Pd/In electrode.
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Affiliation(s)
- Zhanhui Shen
- Henan Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution, School of Geographic Sciences, Xinyang Normal University, Xinyang, 464000, China.
| | - Li Tang
- 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, Xinxiang, 453007, China
| | - Jialu Shi
- Henan Key Laboratory for Synergistic Prevention of Water and Soil Environmental Pollution, School of Geographic Sciences, Xinyang Normal University, Xinyang, 464000, China
| | - Linjie Ding
- 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, Xinxiang, 453007, China
| | - Wanfeng Wang
- 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, Xinxiang, 453007, China
| | - Songsong Zhi
- 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, Xinxiang, 453007, China
| | - Dapeng Wu
- 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, Xinxiang, 453007, China
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3
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Xiong Y, Wang Y, Zhou J, Liu F, Hao F, Fan Z. Electrochemical Nitrate Reduction: Ammonia Synthesis and the Beyond. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2304021. [PMID: 37294062 DOI: 10.1002/adma.202304021] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 05/29/2023] [Indexed: 06/10/2023]
Abstract
Natural nitrogen cycle has been severely disrupted by anthropogenic activities. The overuse of N-containing fertilizers induces the increase of nitrate level in surface and ground waters, and substantial emission of nitrogen oxides causes heavy air pollution. Nitrogen gas, as the main component of air, has been used for mass ammonia production for over a century, providing enough nutrition for agriculture to support world population increase. In the last decade, researchers have made great efforts to develop ammonia processes under ambient conditions to combat the intensive energy consumption and high carbon emission associated with the Haber-Bosch process. Among different techniques, electrochemical nitrate reduction reaction (NO3RR) can achieve nitrate removal and ammonia generation simultaneously using renewable electricity as the power, and there is an exponential growth of studies in this research direction. Here, a timely and comprehensive review on the important progresses of electrochemical NO3RR, covering the rational design of electrocatalysts, emerging CN coupling reactions, and advanced energy conversion and storage systems is provided. Moreover, future perspectives are proposed to accelerate the industrialized NH3 production and green synthesis of chemicals, leading to a sustainable nitrogen cycle via prosperous N-based electrochemistry.
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Affiliation(s)
- Yuecheng Xiong
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Yunhao Wang
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Jingwen Zhou
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Fu Liu
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Fengkun Hao
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
| | - Zhanxi Fan
- Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, P. R. China
- City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, P. R. China
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4
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Chen Y, He J, Pang H, Yu D, Jiang P, Hao X, Zhang J. Electrochemical denitrification by a recyclable cobalt oxide cathode: Rapid recovery and selective catalysis. JOURNAL OF HAZARDOUS MATERIALS 2024; 463:132870. [PMID: 37924706 DOI: 10.1016/j.jhazmat.2023.132870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 10/16/2023] [Accepted: 10/24/2023] [Indexed: 11/06/2023]
Abstract
Cathodic aging and fouling have presented significant challenges in the realm of electrochemical denitrification for engineering applications. This study focused on the development of an economical and recyclable nanoporous Co3O4/Co cathode through anodization for nitrate reduction. What distinguished our cathode was its exceptional sustainability. Cobalt from the inactive catalyst could be reclaimed onto the substrate, enabling the regeneration of a new Co3O4 layer. This innovative approach resulted in an exceptionally low Co catalyst consumption, a mere 1.936 g/1 kg N, making it the most cost-effective choice among all Co-based cathodes. The Co3O4 catalyst exhibited a truncated octahedron structure, primarily composed of surface Co2+ ions. Density functional theory calculations confirmed that the bonding between the O atom in NO3- ions and the Co atom in Co3O4 was thermodynamically favorable, with a free energy of - 0.89 eV. Co2+ ions acted as "electron porters" facilitating electron transfer through a redox circle Co2+-Co3+-Co2+. However, the presence of two energy barriers (*NH2NO to *N2 and *N2 to N2) with respective heights of 0.83 eV and 1.17 eV resulted in a N2 selectivity of 9.84% and an NH3 selectivity of 90.02%. In actual wastewater treatment, approximately 78% of TN and 93% of NO3- were successfully removed after 3 h, consistent with the prediction kinetic model. This anodization-based strategy offers a significant advantage in terms of long-term cost and presents a new paradigm for electrode sustainability.
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Affiliation(s)
- Yiwen Chen
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Junguo He
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Heliang Pang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Dehai Yu
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Peigeng Jiang
- North China Municipal Engineering Design & Research Institute Co., Ltd, Tianjin 300202, China Guangzhou University, Guangzhou 510006, PR China
| | - Xiujuan Hao
- School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, PR China
| | - Jie Zhang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
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5
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Ye J, Yang Y, Teng M, Wang A, Xia J, He G, Chen H. Mixed-valence Cu-based heterostructures for efficient electrochemical nitrate reduction to ammonia. Dalton Trans 2024; 53:1673-1679. [PMID: 38169003 DOI: 10.1039/d3dt03849a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
The electrocatalytic NO3- reduction reaction (NO3RR) to NH3 provides a promising pathway for ambient NH3 synthesis and environmental pollution treatment. Cu and its oxides are recognized as effective NO3RR electrocatalysts due to their favorable d-orbital energy levels and superior kinetics. In this work, mixed-valence Cu-based catalysts with tunable valence states were constructed via an inorganic salt-induced MOF-derived strategy. Notably, optimized Cu-CuxO/C-0.3 featured a Cu/Cu2O heterostructure and demonstrated the lowest Cu valence state. The resulting Cu/Cu2O heterointerface facilitated electron transfer and increased the density of electrochemically active sites, leading to an enhanced faradaic efficiency of 81.4% and a remarkable yield rate of 13.38 mg h-1 cm-2 (ca. 2.39 mol h-1 gcat.-1) at -0.8 V vs. RHE. This work presents insights for designing multi-phase heterostructured NO3RR catalysts and emphasizes their potential significance in efficient ammonia production.
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Affiliation(s)
- Jingrui Ye
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu Province, China.
| | - Yilin Yang
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu Province, China.
| | - Mengjuan Teng
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu Province, China.
| | - An Wang
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu Province, China.
| | - Jiawei Xia
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu Province, China.
| | - Guangyu He
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu Province, China.
| | - Haiqun Chen
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu Province, China.
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6
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Li Q, Liu GH, Qi L, Wang H, Xian G. Chlorine-mediated electrochemical advanced oxidation process for ammonia removal: Mechanisms, characteristics and expectation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 896:165169. [PMID: 37400024 DOI: 10.1016/j.scitotenv.2023.165169] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/06/2023] [Accepted: 06/25/2023] [Indexed: 07/05/2023]
Abstract
Chlorine-Mediated Electrochemical Advanced Oxidation (Cl-EAO) technology is a promising approach for ammonia removal from wastewater due to its numerous advantages, including small infrastructure, short processing time, easy operation, high security, and high nitrogen selectivity. This paper provides a review of the ammonia oxidation mechanisms, characteristics, and anticipated applications of Cl-EAO technology. The mechanisms of ammonia oxidation encompass breakpoint chlorination and chlorine radical oxidation, although the contributions of active chlorine, Cl, and ClO remain uncertain. This study critically examines the limitations of existing research and suggests that a combination of determining free radical concentration and simulating a kinetic model would help elucidate the contributions of active chlorine, Cl, and ClO to ammonia oxidation. Furthermore, this review comprehensively summarizes the characteristics of ammonia oxidation, including kinetic properties, influencing factors, products, and electrodes. The amalgamation of Cl-EAO technology with photocatalytic and concentration technologies has the potential to enhance ammonia oxidation efficiency. Future research should concentrate on clarifying the contributions of active chlorine, Cl, and ClO to ammonia oxidation, the production of chloramines and other byproducts, and the development of more efficient anodes for the Cl-EAO process. The main objective of this review is to enhance the understanding of the Cl-EAO process. The findings presented herein contribute to the advancement of Cl-EAO technology and provide a foundation for future studies in this field.
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Affiliation(s)
- Qiangang Li
- School of Environment and Nature Resources, Renmin University of China, Beijing 100872, China
| | - Guo-Hua Liu
- School of Environment and Nature Resources, Renmin University of China, Beijing 100872, China.
| | - Lu Qi
- School of Environment and Nature Resources, Renmin University of China, Beijing 100872, China
| | - Hongchen Wang
- School of Environment and Nature Resources, Renmin University of China, Beijing 100872, China
| | - Guang Xian
- Logistics Command Department, Army Logistics Academy, Chongqing 401331, China
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7
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Zhang Y, Chu LW, Wang L, Li HK, Zhao QF, Ding YH. Enhanced reduction of nitrate by TDER packed with surface-modified plastic particles electrodes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115236. [PMID: 37421897 DOI: 10.1016/j.ecoenv.2023.115236] [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: 12/25/2022] [Revised: 06/04/2023] [Accepted: 07/04/2023] [Indexed: 07/10/2023]
Abstract
Based on Iron cathodes, nitrate could be selectively decomposed into other lower-valence nitrogen compounds, including ammonia, nitrogen gas, nitrite and nitric oxide, but the removal efficiencies of nitrate and total nitrogen (TN), are affected significantly by the synergistic effects of anodes, chloride electrolyte and conductive plastic particles electrodes. In this work, the base material Titanium (Ti) metal plates and plastic particles which surfaces were mainly coated with Ru-Sn oxidizing compounds, were applied as plates anodes and conductive particles electrodes in Three Dimensional Electrode Reactors (TDER). The Ti/RuSn plate anodes showed excellent performance on degrading nitrate, more nitrogen gas (83.84%) and less ammonia (15.51%) was produced, less TN and Iron ion (0.02 mg/L) was left in the wastewater, and less amount of chemical sludge (0.20 g/L) was produced. Furthermore, the removal efficiencies of nitrate and TN were further increased by the surface-modified plastic particles, which were cheap, reusable, corrosion-resistance, easy to obtain as manufactured materials and light to be suspended in waters. The degradation of nitrate and its intermediates was enhanced possibly by the continuous synergistic reactions initiated by hydrogen radicals, which was generated on the countless surficial active Ru-Sn sites of Ti/RuSn metal plate anodes and plastic particles electrodes, among residual nitrogen intermediates, most of ammonia was selectively converted to gaseous nitrogen by hypochlorite from chloride ion reaction.
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Affiliation(s)
- Yang Zhang
- College of environment and safety engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Long-Wei Chu
- College of environment and safety engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Lei Wang
- College of environment and safety engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Hao-Kang Li
- College of environment and safety engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Qun-Fang Zhao
- College of environment and safety engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yuan-Hong Ding
- College of environment and safety engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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8
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Chen KL, Ahmad MS, Chen CL. Enhanced nitrate reduction over functionalized Pd/Cu electrode with tunable conversion to nitrogen and sodium hydroxide recovery. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 869:161849. [PMID: 36716879 DOI: 10.1016/j.scitotenv.2023.161849] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/10/2023] [Accepted: 01/22/2023] [Indexed: 06/18/2023]
Abstract
Development of heteroatomic electrocatalysts with a particular geometric structure for wastewater denitrification remains a formidable challenge. Herein, we reported the fabrication of a series of PdCu electrodes with Pd electrodeposition times varying from 60 s to 360 s. Physiochemical and electrochemical techniques were used to analyze the structure, morphology and activity of as prepared catalytic electrodes. XRD data revealed the formation of a PdCu alloy, while a reduced particle sizes (ca. 5.3 nm) and a uniform distribution of Pd over Cu was demonstrated by TEM. The XPS measurement indicated the presence of redox (Pd0 and Cu+2) states hence demonstrating the formation of a PdCu alloy. A nitrate removal efficiency of ~98 %, N2 selectivity ~86 % with an alkali recovery of 335 mM was obtained over Pd/Cu 180 s at 0.68 mA cm-2. Enhanced nitrate reducibility and extended durability reveal the viability of a novel electrocatalytic and electrodialysis system for degrading NO3- in water, as well as a system for efficiently recovering liquid alkali.
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Affiliation(s)
- Kuan-Ling Chen
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Muhammad Sheraz Ahmad
- Center for Environmental Sustainability and Human Health, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Ching-Lung Chen
- Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan; Center for Environmental Sustainability and Human Health, Ming Chi University of Technology, New Taipei City 24301, Taiwan.
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Chen M, Zhuang S, Cheng J, Miao J, Tai X, Gu Y, Qin Z, Zhang J, Tang Y, Sun Y, Wan P. Nano-Polycrystalline Cu Layer Interlaced with Ti 3+-Self-Doped TiO 2 Nanotube Arrays as an Electrocatalyst for Reduction of Nitrate to Ammonia. ACS APPLIED MATERIALS & INTERFACES 2023; 15:16680-16691. [PMID: 36961955 DOI: 10.1021/acsami.2c22399] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The electrochemical nitrate reduction reaction (NO3RR) is considered as a promising strategy to degrade nitrate-containing wastewater and synthesize recyclable ammonia at atmospheric pressure and room temperature. In this work, the copper oxides-derived nano-polycrystalline Cu (NPC Cu) was integrated with Ti3+-self-doped TiO2 nanotube arrays (NTA) to fabricate the NPC Cu/H-TiO2 NTA. Ti3+-self-doped TiO2 NTAs and the NPC Cu facilitate electron transfer and mass transportation and create abundant active sites. The unique nanostructure in which Cu nano-polycrystals interlace with the TiO2 nanotube accelerates the electron transfer from the substrate to surface NPC Cu. The density functional theory calculations confirm that the built-in electric field between Cu and TiO2 improves the adsorption characteristic of the NPC Cu/H-TiO2 NTA, thereby converting the endothermic NO3- adsorption step into an exothermic process. Therefore, the high NO3- conversion of 98.97%, the Faradic efficiency of 95.59%, and the ammonia production yield of 0.81 mg cm-2 h-1 are achieved at -0.45 V vs reversible hydrogen electrode in 10 mM NaNO3 (140 mg L-1)-0.1 M Na2SO4. This well-designed NPC Cu/H-TiO2 NTA as an effective electrocatalyst for the 8e- NO3RR possesses promising potential in the applications of ammonia production.
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Affiliation(s)
- Mingfei Chen
- Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
- Changchun Green Drive Hydrogen Technology Co., Ltd, China-Korea Building, No. 1577 Jinhui Road, China-Kore (Changchun) International Cooperation Demonstration Zone, Changchun 130102, China
| | - Shuxian Zhuang
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
- Carbon Neutrality Research Center, State Power Investment Corporation Central Research Institute, South Park, Beijing Future Science Park, Changping District, Beijing 102209, China
| | - Jinlu Cheng
- Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
| | - Jinyuan Miao
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
| | - Xuefeng Tai
- Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
| | - Yinghua Gu
- Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
| | - Zhiwei Qin
- Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
| | - Jinpeng Zhang
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
| | - Yang Tang
- Institute of Applied Electrochemistry, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
| | - Yanzhi Sun
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
| | - Pingyu Wan
- National Fundamental Research Laboratory of New Hazardous Chemicals Assessment & Accident Analysis, Beijing University of Chemical Technology, Number 15, Northeast Road, Chaoyang District, Beijing 100029, China
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10
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Chen Y, He J, Pang H, Jiang P, Qu F, Yu D, Zhang J. New insight into electrochemical denitrification using a self-organized nanoporous V O-Co 3O 4/Co cathode: Plasma-assistant oxygen vacancies catalyzed efficient nitrate reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 850:157845. [PMID: 35932858 DOI: 10.1016/j.scitotenv.2022.157845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/01/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
A novel self-organized nanoporous VO-Co3O4/Co cathode was prepared via anodization and plasma treatment and obtained a significant nitrate reduction efficiency. In the anodization, an oxide layer with the nano-sized pore structure initially grew in-situ on the Co substrate and showed a better surface area. Subsequently, He-plasma increased surface oxygen vacancies (VO) from 24 % to 57 %. Electrons in vacancies were charged into empty eg orbital of low-spin Co3+(Oh, octahedral) and firstly generated high-spin Co2+(Oh) with the configuration of t2g6eg1, accounting for 71.7 % of cobalt species. Accordingly, two original mechanisms (Vo-catalyzed and Co2+(Oh)-catalyzed) were concluded in this study. Oxygen vacancies increased the charge intensity and served as absorption sites in nitrate reduction. Meanwhile, massive Co2+(Oh) provided electrons in the eg orbital with a higher energy state and mediated the faster electron transfer through a Co2+-Co3+-Co2+ redox cycle, compared with Co2+ (Td, tetrahedral). Ultimately, a faster reaction kinetic of 0.0220 min-1 was achieved by VO-Co3O4 than other cathodes e.g., Co3O4 (0.0150 min-1). Such VO-Co3O4/Co cathode-based denitrification strategy displayed great advantages in engineering application and completely removed 90 % of TN from actual wastewater.
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Affiliation(s)
- Yiwen Chen
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Junguo He
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Heliang Pang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Peigen Jiang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Fangshu Qu
- School of Civil Engineering, Guangzhou University, Guangzhou 510006, PR China
| | - Dehai Yu
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Jie Zhang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
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11
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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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12
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Tran R, Wang D, Kingsbury R, Palizhati A, Persson KA, Jain A, Ulissi ZW. Screening of bimetallic electrocatalysts for water purification with machine learning. J Chem Phys 2022; 157:074102. [DOI: 10.1063/5.0092948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Electrocatalysis provides a potential solution to [Formula: see text] pollution in wastewater by converting it to innocuous N2 gas. However, materials with excellent catalytic activity are typically limited to expensive precious metals, hindering their commercial viability. In response to this challenge, we have conducted the most extensive computational search to date for electrocatalysts that can facilitate [Formula: see text] reduction reaction, starting with 59 390 candidate bimetallic alloys from the Materials Project and Automatic-Flow databases. Using a joint machine learning- and computation-based screening strategy, we evaluated our candidates based on corrosion resistance, catalytic activity, N2 selectivity, cost, and the ability to synthesize. We found that only 20 materials will satisfy all criteria in our screening strategy, all of which contain varying amounts of Cu. Our proposed list of candidates is consistent with previous materials investigated in the literature, with the exception of Cu–Co and Cu–Ag based compounds that merit further investigation.
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Affiliation(s)
- Richard Tran
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Duo Wang
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Ryan Kingsbury
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Aini Palizhati
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
| | - Kristin Aslaug Persson
- Department of Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720, USA
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Anubhav Jain
- Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Zachary W. Ulissi
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
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13
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Shi J, Gao Y, Liu D, Shen Z, Fan J, Yu Y, Bao M, Li P, Yao R. Preparing porous Cu/Pd electrode on nickel foam using hydrogen bubbles dynamic template for high-efficiency and high-stability removal of nitrate from water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:57629-57643. [PMID: 35355186 DOI: 10.1007/s11356-022-19942-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Electrochemical reduction is a promising technology to remove nitrate from water. The metallic composition and geometry of electrodes usually dominate the nitrate removal property. Based on nickel foam (NF), we prepared Cu/Pd bimetallic electrode using hydrogen bubbles dynamic template according to a two-step electrodeposition method (Pd after Cu). The micromorphology, crystal structure, and metallic composition were analyzed by using the field emission scanning electron microscope with energy dispersive spectroscopy (FESEM-EDS), powder X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) instruments, respectively. 4.4 mg of Cu and 1.4 mg of Pd were detected on the prepared Cu/Pd electrode. The micromorphology of prepared Cu/Pd electrode showed a grape-bunch look with porous structure of two stage sizes (100-500 nm and 200-300 μm). 98% of the initial NO3--N (100 mg/L) was removed under the potential of - 1.6 V vs. Ag/AgCl saturated KCl after 24 h of reaction when using 0.05 mol/L of Na2SO4 or NaCl as electrolyte. But the concentration of produced NH4+-N was higher than 80 mg/L when using Na2SO4 as electrolyte, which was close to 0 mg/L when using NaCl as electrolyte. The cyclic voltammetry curves of 1000 cycles and the long-term continuous flow test of about 200 h suggested that the prepared Cu/Pd electrode showed high stability for nitrate removal from water.
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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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of 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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of China
| | - Daoru Liu
- 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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of China
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of 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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of China.
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, 163 Xianlin Avenue, Nanjing, 210046, People's Republic of China.
| | - Jing Fan
- 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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of China
| | - Yating Yu
- 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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of China
| | - Meihui Bao
- 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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of China
| | - Panpan Li
- 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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of China
| | - Rui Yao
- 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, NO. 64 Jianshe Road, Xinxiang, 453007, People's Republic of China
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14
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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: 132] [Impact Index Per Article: 66.0] [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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15
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Zha L, Bai J, Zhou C, Zhang Y, Li J, Wang P, Zhang B, Zhou B. Treatment of hazardous organic amine wastewater and simultaneous electricity generation using photocatalytic fuel cell based on TiO 2/WO 3 photoanode and Cu nanowires cathode. CHEMOSPHERE 2022; 289:133119. [PMID: 34864014 DOI: 10.1016/j.chemosphere.2021.133119] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 10/15/2021] [Accepted: 11/27/2021] [Indexed: 06/13/2023]
Abstract
Organic amines are regarded as high toxic, refractory chemicals due to the great damage on human body, and ecosystem. The treatment of organic amine wastewater involves the removal of total nitrogen and toxic organics simultaneously, which is one of the biggest difficulties in wastewater treatment. In this study, hazardous organic amine wastewater was purified by a photocatalytic fuel cell (PFC) with efficient nitrogen removal and organic degradation, and its chemical energy was recovered simultaneously based on hydroxyl radical (HO·) and chlorine radical (Cl·) reaction in a novel TiO2/WO3 and 3D Cu nanowires modified Cu foam (CuNWs/CF) system. TiO2/WO3 heterojunction as photoanode provided rapid charge separation and good stability, and the composite of poly-Si enhanced the light harvest and charge transfer. HO· played critical role in degrading organic amines, while Cl· was responsible for selectively oxidizing amine group or NH4+ to N2. Besides, trace amount of NO2- and NO3- formed by over-oxidation was eliminated on CuNWs/CF cathode due to large specific surface area and fast charge transfer. Moderate Cl- concentration and initial pH had vital influence on strengthening Cl· and HO· generation in the system, and the optimal conditions were 50 mM NaCl and pH = 7. For methylamine, ethylamine and dimethylamine wastewater, the system showed total nitrogen removal efficiency of 94.93%, 91.81%, 93.10% and total organic carbon removal of 58.47%, 53.57%, and 56.71% within 2 h, respectively. Moreover, the corresponding maximum power densities of 2.49, 2.40, 2.27 mW cm-2 were also generated, respectively. The study proposes an efficient, sustainable method for the treatment of hazardous organic amine wastewater and simultaneous energy recovery.
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Affiliation(s)
- Lina Zha
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Jing Bai
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Changhui Zhou
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Yan Zhang
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, PR China.
| | - Jinhua Li
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Pengbo Wang
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Bo Zhang
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Baoxue Zhou
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China.
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16
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Yin Z, Liu J, Jiang L, Chu J, Yang T, Kong A. Semi-enclosed Cu nanoparticles with porous nitrogen-doped carbon shells for efficient and tolerant nitrate electroreduction in neutral condition. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139585] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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17
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Zheng W, Zhu L, Yan Z, Lin Z, Lei Z, Zhang Y, Xu H, Dang Z, Wei C, Feng C. Self-Activated Ni Cathode for Electrocatalytic Nitrate Reduction to Ammonia: From Fundamentals to Scale-Up for Treatment of Industrial Wastewater. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:13231-13243. [PMID: 34379386 DOI: 10.1021/acs.est.1c02278] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Electrocatalytic reduction has recently received increasing attention as a method of converting waste nitrate into value-added ammonia, but most studies have focused on complex strategies of catalyst preparation and little has been done in the way of large-scale demonstrations. Herein, we report that in situ activation of a pristine Ni electrode, either on a lab scale or a pilot scale, is effective in facilitating nitrate reduction to ammonia, exhibiting extraordinarily high activity, selectivity, and stability. The self-activated Ni cathode has a robust capacity to reduce nitrate over a wide range of concentrations and achieves great conversion yield, NH4+-N selectivity, and Faradaic efficiency, respectively, 95.3, 95.5, and 64.4% at 200 mg L-1 NO3--N and 97.8, 97.1, and 90.4% at 2000 mg L-1 NO3--N, for example. Fundamental research indicates that Ni(OH)2 nanoparticles are formed on the Ni electrode surface upon self-activation, which play crucial roles in governing nitrate reduction reaction (NO3RR) through the atomic H*-mediated pathway and accordingly suppressing hydrogen evolution reaction. More importantly, the self-activated Ni(OH)2@Ni cathode can be easily scaled up to allow large volumes of real industrial wastewater to be processed, successfully transferring nitrate into ammonia with high yields and Faradaic efficiency. This study demonstrates a new, mild, and promising method of cleaning nitrate-laden wastewater that produces ammonia as a valuable byproduct.
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Affiliation(s)
- Wenxiao Zheng
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Liuyi Zhu
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Zhang Yan
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Zichao Lin
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Zhenchao Lei
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Yifan Zhang
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Haolin Xu
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Zhi Dang
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Chaohai Wei
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
| | - Chunhua Feng
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou 510006, P. R. China
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18
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Lan Y, Luo H, Ma Y, Hua Y, Liao T, Yang J. Synergy between copper and iron sites inside carbon nanofibers for superior electrocatalytic denitrification. NANOSCALE 2021; 13:10108-10115. [PMID: 34060572 DOI: 10.1039/d1nr01489g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Developing low-cost electrocatalysts for the nitrate reduction reaction (NO3RR) with superior performance is of great significance for wastewater treatment. Herein, we synthesized bimetal Cu/Fe nanoparticles encased in N-doped carbon nanofibers (Cu/Fe@NCNFs) through simple electrospinning followed by a pyrolysis reduction strategy. Metallic copper is beneficial for reducing nitrate to nitrite, and the existence of Fe is conducive to convert nitrate and nitrite into nitrogen. Additionally, the nitrogen-doped carbon nanofibers also facilitate the adsorption of nitrate, and the continuous and complete fiber structure enhances the stability of the catalyst and prevents the corrosion of the active sites. Therefore, the synergetic effect of bimetal Cu/Fe and N-doped carbon fiber plays a key role in promoting the efficiency of nitrate reduction. The obtained Cu/Fe@NCNF catalyst exhibits a satisfactory nitrate conversion efficiency of 76%, removal capacity of 5686 mg N g-1 Cu/Fe and nitrogen selectivity of 94%.
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Affiliation(s)
- Yue Lan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, International Joint Laboratory for Advanced Fiber and Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, P. R. China.
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19
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Yao F, Jia M, Yang Q, Chen F, Zhong Y, Chen S, He L, Pi Z, Hou K, Wang D, Li X. Highly selective electrochemical nitrate reduction using copper phosphide self-supported copper foam electrode: Performance, mechanism, and application. WATER RESEARCH 2021; 193:116881. [PMID: 33571901 DOI: 10.1016/j.watres.2021.116881] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/08/2021] [Accepted: 01/25/2021] [Indexed: 06/12/2023]
Abstract
A highly active and selective electrode is essential in electrochemical denitrification. Although the emerging Cu-based electrode has attracted intensive attentions in electrochemical NO3- reduction, the issues such as restricted activity and selectivity are still unresolved. In our work, a binder-free composite electrode (Cu3P/CF) was first prepared by direct growth of copper phosphide on copper foam and then applied to electrochemical NO3- reduction. The resulting Cu3P/CF electrode showed enhanced electrochemical performance for NO3- reduction (84.3%) with high N2 selectivity (98.01%) under the initial conditions of 1500 mg L-1 Cl- and 50 mg N L-1 NO3-. The cyclic voltammetry (CV) and electrochemical impedance spectra (EIS) demonstrated that electrochemical NO3- reduction was achieved through electron transfer between NO3- and Cu0 originated from CF. The in-situ grown Cu3P served as the bifunctional catalyst, the electron mediator or bridge to facilitate the electron-transfer for NO3- reduction and the stable catalyst to produce atomic H* toward NO2- conversion. Meanwhile, the Cu3P/CF remained its electrocatalytic activity even after eight cyclic experiments. Finally, a 2-stage treatment strategy, pre-oxidation by Ir-Ru/Ti anode and post-reduction by Cu3P/CF cathode, was designed for electrochemical chemical oxygen demand (COD) and total nitrogen (TN) removal from real wastewater.
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Affiliation(s)
- Fubing Yao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China.
| | - Maocong Jia
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China
| | - Qi Yang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China.
| | - Fei Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400044, China; College of Environment and Ecology, Chongqing University, Chongqing, 400044, China.
| | - Yu Zhong
- Key Laboratory of Water Pollution Control Technology, Hunan Research Academy of Environmental Sciences, Changsha, 410004, P.R. China
| | - Shengjie Chen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China
| | - Li He
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China
| | - Zhoujie Pi
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China
| | - Kunjie Hou
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China
| | - Xiaoming Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, P.R. China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P.R. China
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20
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Wang Z, Young SD, Goldsmith BR, Singh N. Increasing electrocatalytic nitrate reduction activity by controlling adsorption through PtRu alloying. J Catal 2021. [DOI: 10.1016/j.jcat.2020.12.031] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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21
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Meng X, Yao L, Jiang W, Jiang X, Liu C, Yang L. In Situ Growth Synthesis of the CNTs@AC Hybrid Material for Efficient Nitrate-Nitrogen Adsorption. ACS OMEGA 2021; 6:1612-1622. [PMID: 33490821 PMCID: PMC7818592 DOI: 10.1021/acsomega.0c05566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 12/30/2020] [Indexed: 06/12/2023]
Abstract
Nitrate-nitrogen (NO3-N) is a common pollutant in aquatic environments and causes many environmental issues and health problems. This study successfully applied the activated AC@CNT composite synthesized by CNTs in-situ growth and post-treated by myristyltrimethylammonium bromide (MTAB) for NO3-N adsorption from wastewater. The results show that the highest NO3-N adsorption capacity of AC@CNTs-M was 14.59 mg·g-1. The in-situ growth of CNTs gave a higher specific surface area and more mesoporous volume, while MTAB uniformly occupied part of the pore structure after the modification process. The AC@CNTs-M had more surface functional groups of hydroxyl and carboxyl, which are favorable for the adsorption of NO3-N. The NO3-N adsorption on AC@CNTs-M was best defined by the pseudo-second-order model, and the isothermal analysis shows that NO3-N adsorption is a multiple process with a maximum adsorption capacity of 27.07 mg·g-1. All the results demonstrate the great potential of AC@CNTs-M for NO3-N adsorption from water, especially in acidic wastewater.
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Affiliation(s)
- Xiaomi Meng
- College
of Architecture and Environment, Sichuan
University, Chengdu 610065, P. R. China
| | - Lu Yao
- College
of Architecture and Environment, Sichuan
University, Chengdu 610065, P. R. China
- National
Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, P. R. China
| | - Wenju Jiang
- College
of Architecture and Environment, Sichuan
University, Chengdu 610065, P. R. China
- National
Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, P. R. China
| | - Xia Jiang
- College
of Architecture and Environment, Sichuan
University, Chengdu 610065, P. R. China
- National
Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, P. R. China
| | - Chengjun Liu
- College
of Architecture and Environment, Sichuan
University, Chengdu 610065, P. R. China
| | - Lin Yang
- College
of Architecture and Environment, Sichuan
University, Chengdu 610065, P. R. China
- National
Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, P. R. China
- National
Engineering Laboratory for Clean Technology of Leather Manufacture, Sichuan University, Chengdu, Sichuan 610065, China
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22
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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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23
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Wang Z, Richards D, Singh N. Recent discoveries in the reaction mechanism of heterogeneous electrocatalytic nitrate reduction. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02025g] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We review advances in the electrocatalytic nitrate reduction mechanism and evaluate future efforts. Existing work could be supplemented by controlling reaction conditions and quantifying active sites to determine activity on a per-site basis.
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Affiliation(s)
- Zixuan Wang
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Catalysis Science and Technology Institute
| | - Danielle Richards
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Catalysis Science and Technology Institute
| | - Nirala Singh
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
- Catalysis Science and Technology Institute
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24
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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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25
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Efficient nitrate and oxygen electroreduction over pyrolysis-free mesoporous covalent Co-salophen coordination frameworks on carbon nanotubes. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137280] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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26
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He P, Mao T, Wang A, Yin Y, Shen J, Chen H, Zhang P. Enhanced reductive removal of ciprofloxacin in pharmaceutical wastewater using biogenic palladium nanoparticles by bubbling H2. RSC Adv 2020; 10:26067-26077. [PMID: 35519754 PMCID: PMC9055312 DOI: 10.1039/d0ra03783d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/03/2020] [Indexed: 11/25/2022] Open
Abstract
To treat waste with waste and efficiently remove the organic pollutant, waste palladiums(ii) were adsorbed and reduced on microorganism surface to catalyze the reductive removal of ciprofloxacin in pharmaceutical wastewater. By optimizing conditions such as pH and temperature, the amount of biogenic palladium adsorbed and reduced on E. coli reached 139.48 mg g−1 (Pd/microorganisms). Moreover, most of the Pd(ii) was reduced to nanometer-sized Pd(0) as characterized by TEM and SEM with EDXA. Using the obtained biogenic palladium, the reductive removal of ciprofloxacin is up to 87.70% at 25 °C, 3.03 folds of that achieved in the absence of H2. The results show that waste E. coli microorganisms can efficiently adsorb and remove waste Pd(ii) and produce Bio-Pd nanoparticle catalysts in the presence of H2. This biogenic palladium presents high catalytic activity and great advantages in the reductive degradation of ciprofloxacin. Our method can also be applied to other waste metal ions to prepare the biogenic metals, facilitate their recovery and reuse in degrading organic pollutants in wastewater to achieve “treating waste using waste”. A solution has been successfully introduced to three key challenges from the wastewater containing waste microorganisms, metal and ciprofloxacin, respectively.![]()
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Affiliation(s)
- Peipei He
- College of Materials, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Tianyu Mao
- College of Materials, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Anming Wang
- College of Materials, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Youcheng Yin
- Holistic Integrative Pharmacy Institutes
- College of Medicine
- Hangzhou Normal University
- Hangzhou
- China
| | - Jinying Shen
- College of Materials, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Haoming Chen
- College of Materials, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
| | - Pengfei Zhang
- College of Materials, Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310014
- P. R. China
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