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Garcia-Sanz C, Andreu A, Pawlyta M, Vukoičić A, Milivojević A, de las Rivas B, Bezbradica D, Palomo JM. Artificial Manganese Metalloenzymes with Laccase-like Activity: Design, Synthesis, and Characterization. ACS APPLIED BIO MATERIALS 2024; 7:4760-4771. [PMID: 38916249 PMCID: PMC11253090 DOI: 10.1021/acsabm.4c00571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/13/2024] [Accepted: 06/17/2024] [Indexed: 06/26/2024]
Abstract
Laccase is an oxidase of great industrial interest due to its ability to catalyze oxidation processes of phenols and persistent organic pollutants. However, it is susceptible to denaturation at high temperatures, sensitive to pH, and unstable in the presence of high concentrations of solvents, which is a issue for industrial use. To solve this problem, this work develops the synthesis in an aqueous medium of a new Mn metalloenzyme with laccase oxidase mimetic catalytic activity. Geobacillus thermocatenulatus lipase (GTL) was used as a scaffold enzyme, mixed with a manganese salt at 50 °C in an aqueous medium. This leads to the in situ formation of manganese(IV) oxide nanowires that interact with the enzyme, yielding a GTL-Mn bionanohybrid. On the other hand, its oxidative activity was evaluated using the ABTS assay, obtaining a catalytic efficiency 300 times higher than that of Trametes versicolor laccase. This new Mn metalloenzyme was 2 times more stable at 40 °C, 3 times more stable in the presence of 10% acetonitrile, and 10 times more stable in 20% acetonitrile than Novozym 51003 laccase. Furthermore, the site-selective immobilized GTL-Mn showed a much higher stability than the soluble form. The oxidase-like activity of this Mn metalloenzyme was successfully demonstrated against other substrates, such as l-DOPA or phloridzin, in oligomerization reactions.
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Affiliation(s)
- Carla Garcia-Sanz
- Instituto
de Catálisis y Petroleoquímica (ICP), CSIC, c/Marie Curie 2, Campus UAM Cantoblanco, 28049 Madrid, Spain
| | - Alicia Andreu
- Instituto
de Catálisis y Petroleoquímica (ICP), CSIC, c/Marie Curie 2, Campus UAM Cantoblanco, 28049 Madrid, Spain
| | - Mirosława Pawlyta
- Faculty
of Mechanical Technology, Silesian Technical
University, Stanisława
Konarskiego 18A, 44-100 Gliwice, Poland
| | - Ana Vukoičić
- Innovation
Center of Faculty of Technology and Metallurgy, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Ana Milivojević
- Faculty
of Technology and Metallurgy, University
of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Blanca de las Rivas
- Department
of Microbial Biotechnology, Institute of
Food Science, Technology and Nutrition (ICTAN-CSIC), José Antonio Novais 10, 28040 Madrid, Spain
| | - Dejan Bezbradica
- Faculty
of Technology and Metallurgy, University
of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Jose M. Palomo
- Instituto
de Catálisis y Petroleoquímica (ICP), CSIC, c/Marie Curie 2, Campus UAM Cantoblanco, 28049 Madrid, Spain
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2
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Zeng L, Liu X, Ma J, Yang J, Yang J, Zhou Y. Current progress on manganese in constructed wetlands: Bibliometrics, effects on wastewater treatment, and plant uptake. ENVIRONMENTAL RESEARCH 2024; 249:118382. [PMID: 38331160 DOI: 10.1016/j.envres.2024.118382] [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: 12/14/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/10/2024]
Abstract
Constructed wetlands (CWs) are a pollutant treatment design inspired by natural wetlands and are widely utilized for the removal of common pollutants. The research focus lies in the circulation of manganese (Mn) in the environment to enhance pollutant removal within CWs. This paper provides a comprehensive review of recent advancements in understanding the role and effects of Mn in chemical weapons, based on literature retrieval from 2002 to 2021. Ecological risk assessment and heavy metals within CWs emerge as current areas of research interest. Mn sources within CWs primarily include natural deposition, heavy metal wastewater, and intentional addition. The cycling between Mn(II) and Mn(IV) facilitates enhanced wastewater treatment within CWs. Moreover, employing a Mn matrix proves effective in reducing ammonia nitrogen wastewater, organic pollutants, as well as heavy metals such as Cd and Pb, thereby addressing complex pollution challenges practically. To comprehensively analyze influencing factors on the system's performance, both internal factors (biological species, design parameters, pH levels, etc.) and external factors (seasonal climate variations, precipitation patterns, ultraviolet radiation exposure, etc.) were discussed. Among these factors, microorganisms, pollutants, and temperature are the most important influencing factors, which emphasizes the importance of these factors for wetland operation. Lastly, this paper delves into plant absorption of Mn along with coping strategies employed by plants when faced with Mn poisoning or deficiency scenarios. When utilizing Mn for the regulation of constructed wetlands, it is crucial to consider the tolerance levels of associated plant species. Furthermore, the study predicts future research hotspots encompass high-efficiency catalysis techniques, matrix-filling approaches, and preparation of resource utilization methods involving Mn nanomaterials.
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Affiliation(s)
- Lingfeng Zeng
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Xin Liu
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Jiezhi Ma
- Department of Obstetrics and Gynecology, Xiangya Third Hospital, Central South University, Changsha City, Hunan Province, 410013, China.
| | - Jie Yang
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, China
| | - Jian Yang
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, China.
| | - Yaoyu Zhou
- Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, China
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3
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Liu Y, Song X, Xu Z, Wang Y, Hou X, Wang Y, Cao X, Wang W. Biomineralized manganese oxide mediated nitrogen-contained wastewater treatment. BIORESOURCE TECHNOLOGY 2024; 400:130689. [PMID: 38599353 DOI: 10.1016/j.biortech.2024.130689] [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: 12/23/2023] [Revised: 03/24/2024] [Accepted: 04/08/2024] [Indexed: 04/12/2024]
Abstract
In recent years, manganese (Mn) has emerged as an accelerator for nitrogen metabolism. However, the bioactivity of manganese is limited by the restricted contact between microbes and manganese minerals in the solid phase and by the toxicity of manganese to microbes. To enhance the bioactivity of solid-phase manganese, biomineralized manganese oxide (MnOx) modified by Lactobacillus was introduced. Nitrogen removal performance have confirmed the effective role of biomineralized MnOx in accelerating the removal of total inorganic nitrogen (TIN). Metagenomic analysis has confirmed the enhancement of the nitrogen metabolic pathway and microbial extracellular electron transfer (MEET) in biomineralized MnOx treatment group (BIOA group). Additionally, the enrichment of manganese oxidation and denitrification genus indicates a coupling between nitrogen metabolism and manganese metabolism. One point of views is that biomineralized MnOx-mediated nitrogen transformation processes could serve as a substitute for traditional nitrogen removal processes.
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Affiliation(s)
- Yingying Liu
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Xinshan Song
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
| | - Zhongshuo Xu
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
| | - Yifei Wang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Xiaoxiao Hou
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Yuhui Wang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Xin Cao
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Wei Wang
- School of Ecological Technology and Engineering, Shanghai Institute of Technology, Shanghai 201418, China
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4
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Wu ST, Su HQ, Xiao QX, Qiu ZY, Huang GQ, He MN, Ge Y, Wang CH, Lin YW. Design of bifunctional ultrathin MnO 2 nanofilm with laccase-like activity for sensing environmental pollutants containing phenol groups. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132493. [PMID: 37716263 DOI: 10.1016/j.jhazmat.2023.132493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/19/2023] [Accepted: 09/04/2023] [Indexed: 09/18/2023]
Abstract
Laccase-catalyzed oxidative reactions are increasingly examined as a reliable approach to environmental analysis and remediation, and it is urgent to widen metal category to compensate huge gap in the number of studies on copper- and non-copper laccase mimics. Herein, two-dimensional ultrathin MnO2 nanofilm (Mn-uNF) was designed via a chemical deposition and alkali etching process. Similar to Cu-laccase, Mn-uNF can oxidize phenols via a one-electron-transfer reaction of Mn(III) and accelerate the MnIII/MnIV state cycle through an unconventional oxygen reduction process. The excellent laccase-like performance of Mn-uNF can be ascribed to the abundant atomically dispersed Vo-assisted Mn(III) and surface -OH species, which was confirmed by characterizations and DFT calculation. Further, a facile dual-function colorimetric platform was designed for array sensing of o-, m-, and p-dihydroxybenzene isomers and one-step discrimination of tetracyclines containing phenol groups. These findings provide reasonable guidance for the design of a nanozyme with active Mn sites as a new family member of highly efficient copper-free laccase mimics.
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Affiliation(s)
- Sheng-Tao Wu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Hui-Qi Su
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Qian-Xiang Xiao
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Zhi-Yu Qiu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Gang-Qiang Huang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Man-Ni He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Yi Ge
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Cong-Hui Wang
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; Lab of Protein Structure and Function, University of South China Medical School, Hengyang 421001, China.
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5
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Achamyeleh A, Ankala BA, Workie YA, Mekonnen ML, Abda EM. Bacterial Nanocellulose/Copper as a Robust Laccase-Mimicking Bionanozyme for Catalytic Oxidation of Phenolic Pollutants. ACS OMEGA 2023; 8:43178-43187. [PMID: 38024715 PMCID: PMC10652835 DOI: 10.1021/acsomega.3c06847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023]
Abstract
Industrial effluents containing phenolic compounds are a major public health concern and thus require effective and robust remediation technologies. Although laccase-like nanozymes are generally recognized as being catalytically efficient in oxidizing phenols, their support materials often lack resilience in harsh environments. Herein, bacterial nanocellulose (BNC) was introduced as a sustainable, strong, biocompatible, and environmentally friendly biopolymer for the synthesis of a laccase-like nanozyme (BNC/Cu). A native bacterial strain that produces nanocellulose was isolated from black tea broth fermented for 1 month. The isolate that produced BNC was identified as Bacillus sp. strain T15, and it can metabolize hexoses, sucrose, and less expensive substrates, such as molasses. Further, BNC/Cu nanozyme was synthesized using the in situ reduction of copper on the BNC. Characterization of the nanozyme by scanning electron microscopy (SEM) and X-ray diffraction (XRD) confirmed the presence of the copper nanoparticles dispersed in the layered sheets of BNC. The laccase-mimetic activity was assessed using the chromogenic redox reaction between 2,4-dichlorophenol (2,4-DP) and 4-aminoantipyrine (4-AP) with characteristic absorption at 510 nm. Remarkably, BNC/Cu has 50.69% higher catalytic activity than the pristine Cu NPs, indicating that BNC served as an effective biomatrix to disperse Cu NPs. Also, the bionanozyme showed the highest specificity toward 2,4-DP with a Km of 0.187 mM, which was lower than that of natural laccase. The bionanozyme retained catalytic activity across a wider temperature range with optimum activity at 85 °C, maintaining 38% laccase activity after 11 days and 46.77% activity after the fourth cycle. The BNC/Cu bionanozyme could efficiently oxidize more than 70% of 1,4-dichlorophenol and phenol in 5 h. Thereby, the BNC/Cu bionanozyme is described here as having an efficient ability to mimic laccase in the oxidation of phenolic compounds that are commonly released into the environment by industry.
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Affiliation(s)
- Afomiya
Animaw Achamyeleh
- Biotechnology
Department, Addis Ababa Science and Technology
University, Addis Ababa, P.O. Box 1647, Ethiopia
| | - Biniyam Abera Ankala
- Industrial
Chemistry Department, Addis Ababa Science and Technology University, Addis Ababa, P.O. Box
1647, Ethiopia
| | - Yitayal Admassu Workie
- Industrial
Chemistry Department, Addis Ababa Science and Technology University, Addis Ababa, P.O. Box
1647, Ethiopia
- Nanotechnology
Center of Excellence, Addis Ababa Science
and Technology University, Addis
Ababa, P.O. Box 1647, Ethiopia
| | - Menbere Leul Mekonnen
- Industrial
Chemistry Department, Addis Ababa Science and Technology University, Addis Ababa, P.O. Box
1647, Ethiopia
- Nanotechnology
Center of Excellence, Addis Ababa Science
and Technology University, Addis
Ababa, P.O. Box 1647, Ethiopia
| | - Ebrahim M. Abda
- Biotechnology
Department, Addis Ababa Science and Technology
University, Addis Ababa, P.O. Box 1647, Ethiopia
- Biotechnology
and Bio-processing Center of Excellence, Addis Ababa Science and Technology University, Addis Ababa, P.O. Box 1647, Ethiopia
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6
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Xu W, Zhang Y, Zhang X, Xu X, Wang Q. One stone, two birds: A Cu-S cluster as a laccase-mimicking nanozyme and sulfite activator for phenol remediation in marine environments. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131776. [PMID: 37285787 DOI: 10.1016/j.jhazmat.2023.131776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/29/2023] [Accepted: 06/02/2023] [Indexed: 06/09/2023]
Abstract
Phenols are infamous pollutants in marine environments and present a grave danger to human health, which makes their efficient detection and removal serious issues. Colorimetry is a simple method for detecting phenols in water because phenols can be oxidized by natural laccase and generate a brown product. However, high cost and poor stability impede the wide-spread implementation of natural laccase in phenol detection. To reverse this adverse situation, a nanoscale Cu-S cluster, Cu4(MPPM)4 (Cu4S4, MPPM = 2-mercapto-5-n-propylpyrimidine), is synthesized. As a stable and inexpensive nanozyme, Cu4S4 shows excellent laccase-mimicking activity and prompts the oxidation of phenols. This characteristic makes Cu4S4 a perfect option for phenol detection with colorimetry. In addition, Cu4S4 also exhibits sulfite activation properties. It can degrade phenols and other pollutants with advanced oxidation processes (AOPs). Theoretical calculations show good laccase-mimicking and sulfite activation properties originating from appropriate interactions between Cu4S4 and substrates. We anticipate that the phenol detection and degradation characteristics of Cu4S4 make it a promising material to be used for practical phenol remediation in water environments.
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Affiliation(s)
- Wei Xu
- Department of Chemistry, College of Science, Northeastern University, Shenyang 110819 Liaoning, China
| | - Yifei Zhang
- Department of Chemistry, College of Science, Northeastern University, Shenyang 110819 Liaoning, China
| | - Xia Zhang
- Department of Chemistry, College of Science, Northeastern University, Shenyang 110819 Liaoning, China
| | - Xinxin Xu
- Department of Chemistry, College of Science, Northeastern University, Shenyang 110819 Liaoning, China.
| | - Qiang Wang
- Key Laboratory of Electromagnetic Processing of Materials, MOE, Northeastern University, Shenyang 110819 Liaoning, China.
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7
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Cheng Q, Zhang L, Lei L, Huang H, Li Y. Spectrophotometric Determination of Alkaline Phosphatase in Serum by A Copper Prussian Blue Analog as A Novel Polyphenol Oxidase-Like Nanozyme. ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2157422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Qi Cheng
- College of Food Science and Engineering, Jilin University, Changchun, China
| | - Ling Zhang
- College of Food Science and Engineering, Jilin University, Changchun, China
| | - Lulu Lei
- College of Food Science and Engineering, Jilin University, Changchun, China
| | - Hui Huang
- College of Food Science and Engineering, Jilin University, Changchun, China
| | - Yongxin Li
- Key Lab of Groundwater Resources and Environment of Ministry of Education, Key Lab of Water Resources and Aquatic Environment of Jilin Province, College of New Energy and Environment, Jilin University, Changchun, China
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de Lima SLS, Pereira FS, de Lima RB, de Freitas IC, Spadotto J, Connolly BJ, Barreto J, Stavale F, Vitorino HA, Fajardo HV, Tanaka AA, Garcia MAS, da Silva AGM. MnO 2-Ir Nanowires: Combining Ultrasmall Nanoparticle Sizes, O-Vacancies, and Low Noble-Metal Loading with Improved Activities towards the Oxygen Reduction Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12173039. [PMID: 36080076 PMCID: PMC9457901 DOI: 10.3390/nano12173039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/11/2022] [Accepted: 08/16/2022] [Indexed: 06/02/2023]
Abstract
Although clean energy generation utilizing the Oxygen Reduction Reaction (ORR) can be considered a promising strategy, this approach remains challenging by the dependence on high loadings of noble metals, mainly Platinum (Pt). Therefore, efforts have been directed to develop new and efficient electrocatalysts that could decrease the Pt content (e.g., by nanotechnology tools or alloying) or replace them completely in these systems. The present investigation shows that high catalytic activity can be reached towards the ORR by employing 1.8 ± 0.7 nm Ir nanoparticles (NPs) deposited onto MnO2 nanowires surface under low Ir loadings (1.2 wt.%). Interestingly, we observed that the MnO2-Ir nanohybrid presented high catalytic activity for the ORR close to commercial Pt/C (20.0 wt.% of Pt), indicating that it could obtain efficient performance using a simple synthetic procedure. The MnO2-Ir electrocatalyst also showed improved stability relative to commercial Pt/C, in which only a slight activity loss was observed after 50 reaction cycles. Considering our findings, the superior performance delivered by the MnO2-Ir nanohybrid may be related to (i) the significant concentration of reduced Mn3+ species, leading to increased concentration of oxygen vacancies at its surface; (ii) the presence of strong metal-support interactions (SMSI), in which the electronic effect between MnOx and Ir may enhance the ORR process; and (iii) the unique structure comprised by Ir ultrasmall sizes at the nanowire surface that enable the exposure of high energy surface/facets, high surface-to-volume ratios, and their uniform dispersion.
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Affiliation(s)
- Scarllett L. S. de Lima
- Departamento de Engenharia Química e de Materiais-DEQM, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225 Gávea, Rio de Janeiro 22453-900, RJ, Brazil
| | - Fellipe S. Pereira
- Departamento de Química, Centro de Ciências Exatas e Tecnologias, Universidade Federal do Maranhão (UFMA), Av. dos Portugueses, 1966 Vila Bacanga, São Luís 65080-805, MA, Brazil
| | - Roberto B. de Lima
- Departamento de Química, Centro de Ciências Exatas e Tecnologias, Universidade Federal do Maranhão (UFMA), Av. dos Portugueses, 1966 Vila Bacanga, São Luís 65080-805, MA, Brazil
| | - Isabel C. de Freitas
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, São Paulo 05508-000, SP, Brazil
| | - Julio Spadotto
- Department of Materials, Henry Royce Institute, University of Manchester, Manchester M13 9PL, UK
| | - Brian J. Connolly
- Department of Materials, Henry Royce Institute, University of Manchester, Manchester M13 9PL, UK
| | - Jade Barreto
- Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro 22290-180, RJ, Brazil
| | - Fernando Stavale
- Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro 22290-180, RJ, Brazil
| | - Hector A. Vitorino
- South American Center for Education and Research in Public Health, Universidad Norbert Wiener, Lima 15108, Peru
| | - Humberto V. Fajardo
- Departamento de Química, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto 35400-000, MG, Brazil
| | - Auro A. Tanaka
- Departamento de Química, Centro de Ciências Exatas e Tecnologias, Universidade Federal do Maranhão (UFMA), Av. dos Portugueses, 1966 Vila Bacanga, São Luís 65080-805, MA, Brazil
| | - Marco A. S. Garcia
- Departamento de Química, Centro de Ciências Exatas e Tecnologias, Universidade Federal do Maranhão (UFMA), Av. dos Portugueses, 1966 Vila Bacanga, São Luís 65080-805, MA, Brazil
| | - Anderson G. M. da Silva
- Departamento de Engenharia Química e de Materiais-DEQM, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente, 225 Gávea, Rio de Janeiro 22453-900, RJ, Brazil
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El-Said WA, Alsulmi A, Alshitari W. Hydrothermal synthesis of Mn3O4 nanorods modified indium tin oxide electrode as an efficient nanocatalyst towards direct urea electrooxidation. PLoS One 2022; 17:e0272586. [PMID: 35925927 PMCID: PMC9352088 DOI: 10.1371/journal.pone.0272586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 07/21/2022] [Indexed: 11/18/2022] Open
Abstract
Control fabrication of metal-oxide nanocatalysts for electrochemical reactions has received considerable research attention. Here, manganese oxide (Mn3O4) nanorods modified indium tin oxide (ITO) electrodes were prepared based on the in-situ one-step hydrothermal methods. The nanorods were well characterized using field emission scanning electron microscopy, Fourier transform infrared, and X-ray diffraction spectroscopy. The results showed the formation of pure crystalline Mn3O4 nanorods with a length of approximately 1.4 μm and a thickness of approximately 100 ± 30 nm. The Mn3O4 nanorod-modified ITO electrodes were used for accelerating urea electrochemical oxidation at room temperature using cyclic and square wave voltammetry techniques. The results indicated that the modified electrode demonstrated excellent electrocatalytic performance toward urea electrooxidation in an alkaline medium over concentrations ranging from 0.2 to 4 mol/L. The modified electrode showed high durability, attaining more than 88% of its baseline performance after 150 cycles; furthermore, the chronoamperometry technique demonstrated high stability. Thus, the Mn3O4 nanorod-modified ITO electrode is a promising anode for direct urea fuel cell applications.
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Affiliation(s)
- Waleed A. El-Said
- Department of Chemistry, University of Jeddah, College of Science, Jeddah, Saudi Arabia
- Department of Chemistry, Faculty of Science, Assiut University, Assiut, Egypt
- * E-mail:
| | - Ahmad Alsulmi
- Department of Chemistry, University of Jeddah, College of Science, Jeddah, Saudi Arabia
| | - Wael Alshitari
- Department of Chemistry, University of Jeddah, College of Science, Jeddah, Saudi Arabia
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10
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Le TN, Le XA, Tran TD, Lee KJ, Kim MI. Laccase-mimicking Mn-Cu hybrid nanoflowers for paper-based visual detection of phenolic neurotransmitters and rapid degradation of dyes. J Nanobiotechnology 2022; 20:358. [PMID: 35918697 PMCID: PMC9344716 DOI: 10.1186/s12951-022-01560-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 07/18/2022] [Indexed: 12/23/2022] Open
Abstract
Background Laccase-based biosensors are efficient for detecting phenolic compounds. However, the instability and high cost of laccases have hindered their practical utilization. Results In this study, we developed hierarchical manganese dioxide–copper phosphate hybrid nanoflowers (H–Mn–Cu NFs) as excellent laccase-mimicking nanozymes. To synthesize the H–Mn–Cu NFs, manganese dioxide nanoflowers (MnO2 NFs) were first synthesized by rapidly reducing potassium permanganate using citric acid. The MnO2 NFs were then functionalized with amine groups, followed by incubation with copper sulfate for three days at room temperature to drive the coordination interaction between the amine moieties and copper ions and to induce anisotropic growth of the petals composed of copper phosphate crystals, consequently yielding H–Mn–Cu NFs. Compared with those of free laccase, at the same mass concentration, H–Mn–Cu NFs exhibited lower Km (~ 85%) and considerably higher Vmax (~ 400%), as well as significantly enhanced stability in the ranges of pH, temperature, ionic strength, and incubation periods evaluated. H–Mn–Cu NFs also catalyzed the decolorization of diverse dyes considerably faster than the free laccase. Based on these advantageous features, a paper microfluidic device incorporating H–Mn–Cu NFs was constructed for the convenient visual detection of phenolic neurotransmitters, including dopamine and epinephrine. The device enabled rapid and sensitive quantification of target neurotransmitters using an image acquired using a smartphone. Conclusions These results clearly show that H–Mn–Cu NFs could be potential candidates to replace natural laccases for a wide range of applications in biosensing, environmental protection, and biotechnology. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01560-0.
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Affiliation(s)
- Thao Nguyen Le
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam, 13120, Gyeonggi, Republic of Korea
| | - Xuan Ai Le
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam, 13120, Gyeonggi, Republic of Korea
| | - Tai Duc Tran
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam, 13120, Gyeonggi, Republic of Korea
| | - Kang Jin Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam, 13120, Gyeonggi, Republic of Korea
| | - Moon Il Kim
- Department of BioNano Technology, Gachon University, 1342 Seongnamdae-ro, Sujeong-gu, Seongnam, 13120, Gyeonggi, Republic of Korea.
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11
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Savinova OS, Solyev PN, Fedorova TV, Kochetkov SN, Savinova TS. Comparative analysis of the white rot fungus Trametes hirsuta 072 laccases ability to modify 17β-oestradiol in the aqueous medium. BIOCATAL BIOTRANSFOR 2022. [DOI: 10.1080/10242422.2022.2085034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Olga S. Savinova
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Pavel N. Solyev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Tatiana V. Fedorova
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Sergey N. Kochetkov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Tatiana S. Savinova
- “F.F. Erisman Federal Scientific Center of Hygiene” of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing Russian Federation, Mytishchi, Russia
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12
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Ge H, Zhang H. Fungus-Based MnO/Porous Carbon Nanohybrid as Efficient Laccase Mimic for Oxygen Reduction Catalysis and Hydroquinone Detection. NANOMATERIALS 2022; 12:nano12091596. [PMID: 35564305 PMCID: PMC9103193 DOI: 10.3390/nano12091596] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 04/27/2022] [Accepted: 05/01/2022] [Indexed: 01/27/2023]
Abstract
Developing efficient laccase-mimicking nanozymes via a facile and sustainable strategy is intriguing in environmental sensing and fuel cells. In our work, a MnO/porous carbon (MnO/PC) nanohybrid based on fungus was synthesized via a facile carbonization route. The nanohybrid was found to possess excellent laccase-mimicking activity using 2,2′-azinobis (3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt (ABTS) as the substrate. Compared with the natural laccase and reported nanozymes, the MnO/PC nanozyme had much lower Km value. Furthermore, the electrochemical results show that the MnO/PC nanozyme had high electrocatalytic activity toward the oxygen reduction reaction (ORR) when it was modified on the electrode. The hybrid nanozyme could catalyze the four-electron ORR, similar to natural laccase. Moreover, hydroquinone (HQ) induced the reduction of oxABTS and caused the green color to fade, which provided colorimetric detection of HQ. A desirable linear relationship (0–50 μM) and detection limit (0.5 μM) were obtained. Our work opens a simple and sustainable avenue to develop a carbon–metal hybrid nanozyme in environment and energy applications.
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13
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Lin Y, Wang F, Yu J, Zhang X, Lu GP. Iron single-atom anchored N-doped carbon as a 'laccase-like' nanozyme for the degradation and detection of phenolic pollutants and adrenaline. JOURNAL OF HAZARDOUS MATERIALS 2022; 425:127763. [PMID: 34801307 DOI: 10.1016/j.jhazmat.2021.127763] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/01/2021] [Accepted: 11/09/2021] [Indexed: 05/09/2023]
Abstract
To solve the inherent defects of laccase, the first iron single-atom anchored N-doped carbon material (Fe1@CN-20) as a laccase mimic was disclosed. The FeN4 structure of this material can well mimic the catalytic activity of laccase. Although Fe1@CN-20 has a lower metal content (2.9 wt%) than any previously reported laccase mimics, it exhibits kinetic constants comparable to those of laccase, as its Km (Michaelis constant) and Vmax (maximum rate) are 0.070 mM and 2.25 µM/min respectively, which are similar to those of laccase (0.078 mM, 2.49 µM/min). This catalyst displays excellent stability even under extreme pH (2-9), high temperature (100 °C), strong ionic strength (500 mM of NaCl), high ethanol concentration (volume ratio 40%) and long storage time (2 months). Additionally, it can be reused for at least 7 times with only a slight loss in activity. Therefore, this material has a much lower price and better stability and recyclability than laccase, which has been applied in the detection and degradation of a series of phenolic compounds. In the detection of adrenaline, Fe1@CN-20 achieved a detection limit of 1.3 µM, indicating it is more sensitive than laccase (3.9 µM).
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Affiliation(s)
- Yamei Lin
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Fei Wang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Jie Yu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Xing Zhang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China.
| | - Guo-Ping Lu
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei Street, Nanjing 210094, PR China.
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14
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Recent Advances in the Development of Laccase-Based Biosensors via Nano-Immobilization Techniques. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10020058] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Monitoring phenolic compounds is critical in the environmental, food, and medical sectors. Among many recent advanced detection platforms, laccase-based biosensing platforms gave very rapid, effective, online, and in situ sensing of phenolic compounds. In laccase-based biosensors, laccase immobilization techniques have a vital role. However, a detailing of the advancements in laccase immobilization techniques employed in laccase-based biosensors is lacking in the literature. Thus, in this review, we assessed how the nano-immobilization techniques shaped the laccase biosensing platforms. We discussed novel developments in laccase immobilization techniques such as entrapment, adsorption, cross-linking, and covalent over new nanocomposites in laccase biosensors. We made a comprehensive assessment based on the current literature for future perspectives of nano-immobilized laccase biosensors. We found the important key areas toward which future laccase biosensor research seems to be heading. These include 1. A focus on the development of multi-layer laccase over electrode surface, 2. The need to utilize more covalent immobilization routes, as they change the laccase specificity toward phenolic compounds, 3. The advancement in polymeric matrices with electroconductive properties, and 4. novel entrapment techniques like biomineralization using laccase molecules. Thus, in this review, we provided a detailed account of immobilization in laccase biosensors and their feasibility in the future for the development of highly specific laccase biosensors in industrial, medicinal, food, and environmental applications.
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15
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Lei L, Yang X, Song Y, Huang H, Li Y. Current research progress on laccase-like nanomaterials. NEW J CHEM 2022. [DOI: 10.1039/d1nj05658a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The first systematic review of the progress of research on the types and applications of laccase-like activity of nanomaterials is reported.
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Affiliation(s)
- Lulu Lei
- College of Food Science and Engineering, Jilin University, Changchun 130025, P. R. China
| | - Xiaoyu Yang
- College of Food Science and Engineering, Jilin University, Changchun 130025, P. R. China
| | - Yudong Song
- College of Food Science and Engineering, Jilin University, Changchun 130025, P. R. China
| | - Hui Huang
- College of Food Science and Engineering, Jilin University, Changchun 130025, P. R. China
| | - Yongxin Li
- Key Lab of Groundwater Resources and Environment of Ministry of Education, Key Lab of Water Resources and Aquatic Environment of Jilin Province, College of New Energy and Environment, Jilin University, Changchun 130021, P. R. China
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16
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Memon AH, Wei B, Shams S, Jiang Y, Jiao M, Su M, Liang H. Construction of robust bienzyme-mimicking nanocatalysts for dye degradation by self-assembly of hematin, metal ions, and nucleotides. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01125a] [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 growing proportion of the textile industry has led to an increase in the concentration of colored dyes in aquatic systems.
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Affiliation(s)
- Amjad Hussain Memon
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
- Government Boys High School Manjhand, Education and Literary Department, Govt of Sindh, Pakistan
| | - Bin Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Saira Shams
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yucui Jiang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Mengzhao Jiao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Mingming Su
- School of Environment and Natural Resources, Renmin University of China, Beijing, PR China
| | - Hao Liang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
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17
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Worku AK, Ayele DW, Habtu NG. Influence of nickel doping on MnO2 nanoflowers as electrocatalyst for oxygen reduction reaction. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04746-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Abstract
Doping is promising strategy for the alteration of nanomaterials to enhance their optical, electrical, and catalytic activities. The development of electrocatalysts for oxygen reduction reactions (ORR) with excellent activity, low cost and durability is essential for the large-scale utilization of energy storage devices such as batteries. In this study, MnO2 and Ni-doped MnO2 nanowires were prepared through a simple co-perception technique. The influence of nickel concentration on electrochemical performance was studied using linear sweep voltammetry and cyclic voltammetry. The morphological, thermal, structural, and optical properties of MnO2 and Ni-doped MnO2 nanowires were examined by SEM, ICP-OES, FT-IR, XRD, UV–Vis, BET and TGA/DTA. Morphological analyses showed that pure MnO2 and Ni-doped MnO2 had flower-like and nanowire structures, respectively. The XRD study confirmed the phase transformation from ε to α and β phases of MnO2 due to the dopant. It was also noted from the XRD studies that the crystallite sizes of pure MnO2 and Ni-doped MnO2 were in the range of 2.25–6.6 nm. The band gaps of MnO2 and 0.125 M Ni-doped MnO2 nanoparticles were estimated to be 2.78 and 1.74 eV, correspondingly, which can be seen from UV–Vis. FTIR spectroscopy was used to determine the presence of functional groups and M–O bonds (M = Mn, Ni). The TGA/TDA examination showed that Ni-doping in MnO2 led to an improvement in its thermal properties. The cyclic voltammetry results exhibited that Ni-doped MnO2 nanowires have remarkable catalytic performance for ORR in 0.1 M KOH alkaline conditions. This work contributes to the facile preparation of highly active and durable catalysts with improved catalytic performance mainly due to the predominance of nickel.
Article Highlights
MnO2 and Ni-doped MnO2 nanowires were synthesized via a facile co-perception approach.
Nickel doping in MnO2 induces the formation of wire-like nanostructures.
Nickel doping enhances the electrochemical activity and thermal stability of MnO2 nanoflowers.
The addition of nickel into MnO2 promoted the catalytic activity for oxygen reduction reaction.
A higher catalytic activity was achieved in 0.125 M Ni-MnO2 nanowires.
Graphic abstract
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18
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Wong ELS, Vuong KQ, Chow E. Nanozymes for Environmental Pollutant Monitoring and Remediation. SENSORS (BASEL, SWITZERLAND) 2021; 21:E408. [PMID: 33430087 PMCID: PMC7827938 DOI: 10.3390/s21020408] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/03/2021] [Accepted: 01/06/2021] [Indexed: 12/20/2022]
Abstract
Nanozymes are advanced nanomaterials which mimic natural enzymes by exhibiting enzyme-like properties. As nanozymes offer better structural stability over their respective natural enzymes, they are ideal candidates for real-time and/or remote environmental pollutant monitoring and remediation. In this review, we classify nanozymes into four types depending on their enzyme-mimicking behaviour (active metal centre mimic, functional mimic, nanocomposite or 3D structural mimic) and offer mechanistic insights into the nature of their catalytic activity. Following this, we discuss the current environmental translation of nanozymes into a powerful sensing or remediation tool through inventive nano-architectural design of nanozymes and their transduction methodologies. Here, we focus on recent developments in nanozymes for the detection of heavy metal ions, pesticides and other organic pollutants, emphasising optical methods and a few electrochemical techniques. Strategies to remediate persistent organic pollutants such as pesticides, phenols, antibiotics and textile dyes are included. We conclude with a discussion on the practical deployment of these nanozymes in terms of their effectiveness, reusability, real-time in-field application, commercial production and regulatory considerations.
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Affiliation(s)
| | | | - Edith Chow
- Aperture, Ryde, NSW 2112, Australia; (E.L.S.W.); (K.Q.V.)
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19
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Stasyuk N, Smutok O, Demkiv O, Prokopiv T, Gayda G, Nisnevitch M, Gonchar M. Synthesis, Catalytic Properties and Application in Biosensorics of Nanozymes and Electronanocatalysts: A Review. SENSORS (BASEL, SWITZERLAND) 2020; 20:E4509. [PMID: 32806607 PMCID: PMC7472306 DOI: 10.3390/s20164509] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 02/06/2023]
Abstract
The current review is devoted to nanozymes, i.e., nanostructured artificial enzymes which mimic the catalytic properties of natural enzymes. Use of the term "nanozyme" in the literature as indicating an enzyme is not always justified. For example, it is used inappropriately for nanomaterials bound with electrodes that possess catalytic activity only when applying an electric potential. If the enzyme-like activity of such a material is not proven in solution (without applying the potential), such a catalyst should be named an "electronanocatalyst", not a nanozyme. This paper presents a review of the classification of the nanozymes, their advantages vs. natural enzymes, and potential practical applications. Special attention is paid to nanozyme synthesis methods (hydrothermal and solvothermal, chemical reduction, sol-gel method, co-precipitation, polymerization/polycondensation, electrochemical deposition). The catalytic performance of nanozymes is characterized, a critical point of view on catalytic parameters of nanozymes described in scientific papers is presented and typical mistakes are analyzed. The central part of the review relates to characterization of nanozymes which mimic natural enzymes with analytical importance ("nanoperoxidase", "nanooxidases", "nanolaccase") and their use in the construction of electro-chemical (bio)sensors ("nanosensors").
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Affiliation(s)
- Nataliya Stasyuk
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (N.S.); (O.S.); (O.D.); (T.P.); (G.G.)
| | - Oleh Smutok
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (N.S.); (O.S.); (O.D.); (T.P.); (G.G.)
- Department of Biology and Chemistry, Drohobych Ivan Franko State Pedagogical University, 82100 Drohobych, Ukraine
| | - Olha Demkiv
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (N.S.); (O.S.); (O.D.); (T.P.); (G.G.)
- Faculty of Veterinary Hygiene, Ecology and Law, Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies, 79000 Lviv, Ukraine
| | - Tetiana Prokopiv
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (N.S.); (O.S.); (O.D.); (T.P.); (G.G.)
| | - Galina Gayda
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (N.S.); (O.S.); (O.D.); (T.P.); (G.G.)
| | - Marina Nisnevitch
- Department of Chemical Engineering, Ariel University, Kyriat-ha-Mada, Ariel 4070000, Israel;
| | - Mykhailo Gonchar
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 79005 Lviv, Ukraine; (N.S.); (O.S.); (O.D.); (T.P.); (G.G.)
- Department of Biology and Chemistry, Drohobych Ivan Franko State Pedagogical University, 82100 Drohobych, Ukraine
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20
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Sun K, Liu Q, Li S, Qi Y, Si Y. MnO 2 nanozyme-driven polymerization and decomposition mechanisms of 17β-estradiol: Influence of humic acid. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122393. [PMID: 32120219 DOI: 10.1016/j.jhazmat.2020.122393] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 02/22/2020] [Accepted: 02/22/2020] [Indexed: 06/10/2023]
Abstract
Nanozymes, which display the bifunctional properties of nanomaterials and natural enzymes, are useful tools for environmental remediation. In this research, nano-MnO2 was selected for its intrinsic enzyme-like activity to remove 17β-estradiol (E2). Results indicated that nano-MnO2 exhibited laccase-like activity (7.22 U·mg-1) and removed 97.3 % of E2 at pH 6. Humic acid (HA) impeded E2 removal (only 72.4 %) by competing with E2 for the catalytic sites of the MnO2 nanozyme surface, and there was a good linear correlation between the kinetic constants and HA concentrations (R2 = 0.9489). Notably, the phenolic -OH of E2 interacted with HA to yield various polymeric products via radical-driven covalent coupling, resulting in ablation of phenolic -OH but increase of ether groups in the polymeric structure. Intermediate products, including estrone, E2 homo-/hetero-oligomers, E2 hydroxylated and quinone-like products, as well as aromatic ring-opening species, were identified. Interestingly, HA hindered the extent of E2 oxidation, homo-coupling, and decomposition but accelerated E2 and HA hetero-coupling. A reasonable catalytic pathway of E2 and HA involving MnO2 nanozyme was proposed. These findings provide novel insights into the influence of HA on MnO2 nanozyme-driven E2 radical polymerization and decomposition, consequently favoring the ecological water restoration and the global carbon cycle.
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Affiliation(s)
- Kai Sun
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China.
| | - Qingzhu Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Shunyao Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yongbo Qi
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China
| | - Youbin Si
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China.
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21
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CuO nanorods as a laccase mimicking enzyme for highly sensitive colorimetric and electrochemical dual biosensor: Application in living cell epinephrine analysis. Colloids Surf B Biointerfaces 2020; 195:111228. [PMID: 32668372 DOI: 10.1016/j.colsurfb.2020.111228] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 06/03/2020] [Accepted: 06/26/2020] [Indexed: 12/12/2022]
Abstract
A sensitive colorimetric and electrochemical sensor for measuring of epinephrine (EP) was developed based on CuO nanorods (NRs), and applicability of the sensor for detection of release epinephrine (EP) from living cells was evaluated. The CuO NRs was prepared using a facile and efficient method in low temperature and characterized by Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and Energy-dispersive X-ray spectroscopy (EDX). The CuO NRs exhibited laccase-like activity and could oxidize epinephrine (EP) to a colored product. No interference from the common interfering agents such as dopamine, ascorbic acid and uric acid was observed. Colorimetric sensor demonstrated a linear range of 0.6-18 μM with detection limit of 0.31 μM. Furthermore, the electrochemical study showed CuO NRs exhibited excellent electrocatalytic activity towards epinephrine oxidation. Differential pulse voltammetry signals increase with increasing of EP concentration in the range 0.04-14 μM, with a detection limit of 20 nM. Finally, the proposed sensor applied to perform real-time monitoring of epinephrine released by PC12 cells, indicating that CuO NRs provide a new platform for developing high-performance sensors in biological applications.
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Wang X, Xiang W, Wang S, Ge J, Qu R, Wang Z. Oxidative Oligomerization of Phenolic Endocrine Disrupting Chemicals Mediated by Mn(III)-L Complexes and the Role of Phenoxyl Radicals in the Enhanced Removal: Experimental and Theoretical Studies. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:1573-1582. [PMID: 31886653 DOI: 10.1021/acs.est.9b05423] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Soluble manganese(III), stabilized by ligands as Mn(III)-L complexes, are ubiquitous in natural waters and wastewaters and can potentially serve as both the oxidant and reductant in one-electron transfer reactions with organic contaminants. In this study, the oxidative transformations of 14 phenolic endocrine disrupting chemicals (EDCs) by in situ-formed Mn(III)-L complexes, generated from irradiated water containing Mn(II) and humic acid, were investigated. The pseudo-first-order rate constants (kobs, h-1) of these phenols varied from 1.0 × 10-4 to 5.9 × 10-2. A quantitative structure-activity relationship model was developed, which suggests that the electron-donating ability (EHOMO) of phenolic chemicals was the most important molecular characteristic for the Mn(III)-L-mediated oxidative transformation. Phenol transformation was initiated by the generation of a phenoxyl radical through electron transfer to Mn(III)-L. Subsequent self-coupling reactions between phenoxyl radicals resulted in the formation of self-coupling dimers and trimers. With the addition of simple phenol as a cosubstrate, enhanced transformations of these phenolic EDCs were clearly observed, and cross-coupling products of simple phenol and the substrates were also detected. In addition, a reaction activation energy calculation based on the transition-state theory indicated that the cross-coupling reaction was more likely than the self-coupling reaction to occur in the presence of phenol. This work provides new insights into the environmental fate of phenolic compounds.
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Affiliation(s)
- Xinghao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , P. R. China
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science , Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Wenrui Xiang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , P. R. China
| | - Siyuan Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , P. R. China
| | - Jiali Ge
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , P. R. China
| | - Ruijuan Qu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , P. R. China
| | - Zunyao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Nanjing 210023 , P. R. China
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Chen W, Li S, Wang J, Sun K, Si Y. Metal and metal-oxide nanozymes: bioenzymatic characteristics, catalytic mechanism, and eco-environmental applications. NANOSCALE 2019; 11:15783-15793. [PMID: 31432841 DOI: 10.1039/c9nr04771a] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phenolic contaminants (R-OH) are a category of highly toxic organic compounds that are widespread in aquatic ecosystems and can induce carcinogenic risk to wildlife and humans; natural enzymes as green catalysts are capable of step-polymerizing these compounds to produce diverse macromolecular self-coupling products via radical-mediated C-C and C-O-C bonding at either the ortho- or para-carbon position, thereby evading the bioavailability and ecotoxicity of these compounds. Intriguingly, certain artificial metal and metal-oxide nanomaterials are known as nanozymes. They not only possess the unique properties of nanomaterials but also display intrinsic enzyme-mimicking activities. These artificial nanozymes are expected to surmount the shortcomings, such as low stability, easy inactivation, difficult recycling, and high cost, of natural enzymes, thus contributing to eco-environmental restoration. This review highlights the available studies on the enzymatic characteristics and catalytic mechanisms of natural enzymes and artificial metal and metal-oxide nanozymes in the removal and transformation of R-OH. These advances will provide key research directions beneficial to the multifunctional applications of artificial nanozymes in aquatic ecosystems.
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Affiliation(s)
- Wenjun Chen
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, China.
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Wang X, Wang S, Qu R, Ge J, Wang Z, Gu C. Enhanced Removal of Chlorophene and 17β-estradiol by Mn(III) in a Mixture Solution with Humic Acid: Investigation of Reaction Kinetics and Formation of Co-oligomerization Products. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:13222-13230. [PMID: 30339370 DOI: 10.1021/acs.est.8b04116] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Reaction with soluble Mn(II) has been considered as a main decay pathway for superoxide in natural waters, accompanied by an important Mn redox cycling. In this study, the interaction of Mn(II) and humic acid (HA) was investigated in visible light irradiated water. Our results indicate that HA may play a dual role to act as a photosensitizer to produce superoxide anions (O2-) and as a strong ligand to stabilize the Mn(III), forming soluble Mn(III)L species for substrate transformation. Furthermore, the reaction kinetics, products, and mechanisms of chlorophene (CP) and estradiol (E2) mixture in the Mn(II)/HA/visible light reaction systems were assessed. The removal of CP and E2 was enhanced by 24.3% and 13.2%, respectively, in mixture solution at initial concentration of 1.0 μM for each target contaminant, as compared to the case of single-compound degradation. Product identification and density functional theory calculations indicated that cross-coupling reaction of CP and E2 radicals was more likely to occur than the self-coupling reaction in mixture solution. In addition, estrogenic activities of initial reaction solution were also effectively decreased during the transformation process. These findings provide new insights into Mn(III)-mediated reactions to better understand the environmental fate of organic contaminant mixture in waters.
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Affiliation(s)
- Xinghao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu, Nanjing 210023 , P. R. China
| | - Siyuan Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu, Nanjing 210023 , P. R. China
| | - Ruijuan Qu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu, Nanjing 210023 , P. R. China
| | - Jiali Ge
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu, Nanjing 210023 , P. R. China
| | - Zunyao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu, Nanjing 210023 , P. R. China
| | - Cheng Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment , Nanjing University , Jiangsu, Nanjing 210023 , P. R. China
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Wang S, Wang X, Li C, Xu X, Wei Z, Wang Z, Qu R. Photodegradation of 17β-estradiol on silica gel and natural soil by UV treatment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 242:1236-1244. [PMID: 30118911 DOI: 10.1016/j.envpol.2018.08.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/31/2018] [Accepted: 08/05/2018] [Indexed: 06/08/2023]
Abstract
This paper evaluates the UV photodegradation of 17β-estradiol (E2) on silica gel and in natural soil with different soil components. Silica gel was chosen as a stable and pure support to simulate the photochemical behavior of E2 on the surface of natural soil. Ultraviolet light, rather than visible light, was confirmed to play a decisive role in the photodegradation of E2 on silica gel. The effect of three soil components, including humic acid (HA), inorganic salts, and relative humidity (RH), on the photochemical behavior of E2 on silica gel or soil under UV irradiation was then evaluated. Two HA concentrations (10 and 20 mg g-1) and three salts (ferric sulfate, copper sulfate and sodium carbonate) were observed to obviously inhibit the degradation of E2 on silica gel. Interestingly, nitrate was found to obviously improve the removal efficiency of E2. Both too-dry and too-wet conditions obviously reduced the removal rate of E2, and the optimum relative humidity (RH) value was found to be approximately about 35% (30 °C). Furthermore, twenty intermediate products and two major pathways were proposed to describe the transformation processes of E2 treated by UV irradiation, among which oligomers were found to be the major intermediate products before complete mineralization. The efficient UV removal of E2 on silica gel and natural soil suggested a feasible strategy to remediate E2 contaminated soil.
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Affiliation(s)
- Siyuan Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Xinghao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Chenguang Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Xinxin Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Zhongbo Wei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Zunyao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China
| | - Ruijuan Qu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu, 210023, PR China.
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