1
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Shi X, Chen S, Zhao K, Wu S, Ye F, Yu H, Zhang Y, Chen X, Liang Y, Niu J. Nanoconfinement-mediated non-radical enhanced pollutant degradation on Fe single-atom electrocatalyst. JOURNAL OF HAZARDOUS MATERIALS 2025; 490:137764. [PMID: 40022931 DOI: 10.1016/j.jhazmat.2025.137764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2024] [Revised: 02/17/2025] [Accepted: 02/24/2025] [Indexed: 03/04/2025]
Abstract
Heterogeneous electro-Fenton (EF) technology is an efficient approach for antibiotics degradation, but the effective mineralization of pollutants in complex actual water remains challenging due to the susceptibility of hydroxyl radical (∙OH) to environmental influences. Herein, a Fe-single atom anchored porous hollow carbon sphere (FexHCS) material with nano-confinement structure was designed for simultaneously catalyzing H2O2 to produce ∙OH and 1O2. Benefiting from oxidation of ∙OH and selective reaction of alkyl group with 1O2, the kinetic constant (k) of the FexHCS-based EF system achieves 4.13 h-1, which is 3.7 times higher than that of the traditional Fenton (1.13 h-1) under the same conditions for ofloxacin (OFL) degradation. The mineralization efficiency of OFL by FexHCS-based EF reaches 72.7 %, exceeding most of the previously reported catalysts within 1 h. The COD value of actual pharmaceutical wastewater is reduced from 801 mg L-1 to 49 mg L-1 after 5 h of treatment, and the energy consumption for wastewater treatment is calculated to be 15.9 kW h kg-1 COD-1. This work demonstrates the attractive advantages of 1O2 enhanced electro-Fenton performance in complex actual water and provides new insights into developing novel electrocatalysts for wastewater treatment.
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Affiliation(s)
- Xinglei Shi
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Saixi Chen
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Kun Zhao
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Shuai Wu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Fei Ye
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Hongtao Yu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yuanhao Zhang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Xiaolong Chen
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Yusheng Liang
- Petrochina Lanzhou Petrochemical Company, Lanzhou 730060, China
| | - Junfeng Niu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
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2
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Ječmenica Dučić M, Vasić Anićijević D, Aćimović D, Švorc Ľ, Bugarski B, Pešić R, Brdarić T. Predicting the Fate of Bisphenol A During Electrochemical Oxidation: A Simple Semiempirical Method Based on the Concentration Profile of Hydroxyl Radicals. Int J Mol Sci 2025; 26:4785. [PMID: 40429926 PMCID: PMC12112118 DOI: 10.3390/ijms26104785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2025] [Revised: 05/08/2025] [Accepted: 05/11/2025] [Indexed: 05/29/2025] Open
Abstract
The efficiency of electrochemical advanced oxidation processes (EAOPs) is fundamentally governed by hydroxyl-radical (•OH) generation. While direct experimental measurements of these transient species remain complex and impractical, robust computational methods for predicting their temporal profiles are notably scarce. This work presents a semi-empirical methodology based on H2O2 measuring experiments that enables indirect •OH quantification. We employed a recently developed carbon-based electrode and the priority pollutant bisphenol A (BPA) as the model system. The system achieved 92.3% BPA degradation with 84% mineralization efficiency during 5-h electrooxidation at 15 mA/cm2. Gas chromatography/mass spectrometry (GC/MS) was used for tracking BPA and detection of intermediates. On this basis, we developed a computational model that successfully predicts temporal concentration profiles of all reactive species interacting with •OH, along with degradation kinetics across current densities (10-20 mA/cm2). By incorporating predictions from the Toxicity Estimation Software Tool (T.E.S.T.), the developed model accurately simulates time-dependent evolution of relative toxicity throughout the treatment process. The presented approach has a general character and requires rather simple experimental input to predict and optimize degradation outcome in terms of input concentration, degradation time, current density, and final toxicity. Further modifications of the model would enable widening to other EAOPs systems.
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Affiliation(s)
- Marija Ječmenica Dučić
- Department of Physical Chemistry, Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12–14, 11000 Belgrade, Serbia
| | - Dragana Vasić Anićijević
- Department of Physical Chemistry, Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12–14, 11000 Belgrade, Serbia
| | - Danka Aćimović
- Department of Physical Chemistry, Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12–14, 11000 Belgrade, Serbia
| | - Ľubomír Švorc
- Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Branko Bugarski
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Radojica Pešić
- Department of Chemical Engineering, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
| | - Tanja Brdarić
- Department of Physical Chemistry, Vinča Institute of Nuclear Sciences—National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12–14, 11000 Belgrade, Serbia
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3
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Xu J, Chen R, Song J, Liu S, Shen Y, Zhang Y. Emerging techniques and scenarios of scanning electrochemical microscopy for the characterization of electrocatalytic reactions. Chem Sci 2025:d5sc01854d. [PMID: 40406210 PMCID: PMC12093058 DOI: 10.1039/d5sc01854d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2025] [Accepted: 05/12/2025] [Indexed: 05/26/2025] Open
Abstract
To fulfill the evergrowing energy consumption demands and the pursuit of sustainable and renewable energy, electrocatalytic reactions such as the water electrocatalysis reaction, the O2 reduction reaction, the N2 reduction reaction (NRR), the CO2 reduction reaction (CO2RR), etc., have drawn a lot of attention. Scanning electrochemical microscopy (SECM) is a powerful technique for in situ surface characterization, providing critical information about the local reactivity of electrocatalysts and unveiling key information about the reaction mechanisms, which are essential for the rational design of novel electrocatalysts. There has been a growing trend of SECM-based studies in electrocatalytic reactions, with a major focus on water splitting and O2 reduction reactions, and relying mostly on conventional SECM techniques. Recently, novel operation modes of SECM have emerged, adding new features to the functionality of SECM and successfully expanding the scope of SECM to other electrocatalytic reactions, i.e., the NRR, the NO3 - reduction reaction (NO3RR), the CO2RR and so on, as well as more complicated electrolysis systems, i.e. gas diffusion electrodes. In this perspective, we summarized recent progress in the development of novel SECM techniques and recent SECM-based research studies on the NRR, NO3RR, CO2RR, and so on, where quantitative information on the reaction mechanism and catalyst reactivity was uncovered through SECM. The development of novel SECM techniques and the application of these techniques can provide new insights into the reaction mechanisms of diverse electrocatalytic reactions as well as the in situ characterization of electrocatalysts, facilitating the pursuit of sustainable and renewable energy.
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Affiliation(s)
- Jinming Xu
- Jiangsu Province Key Laboratory of Critical Care Medicine, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
| | - Ran Chen
- Jiangsu Province Key Laboratory of Critical Care Medicine, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
| | - Juanxian Song
- Jiangsu Province Key Laboratory of Critical Care Medicine, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
| | - Songqin Liu
- Jiangsu Province Key Laboratory of Critical Care Medicine, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
| | - Yanfei Shen
- Jiangsu Province Key Laboratory of Critical Care Medicine, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
| | - Yuanjian Zhang
- Jiangsu Province Key Laboratory of Critical Care Medicine, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical Research, School of Chemistry and Chemical Engineering, Southeast University Nanjing 211189 China
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4
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Arriaga EA, Ingram JC, Lucy CA, Winfield L. Roots of Innovation in Analytical Chemistry. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2025; 18:1-21. [PMID: 40372818 DOI: 10.1146/annurev-anchem-061622-035620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2025]
Abstract
The article profiles 11 academic analytical chemists and explores the impact of their unique backgrounds and identities on their creativity and contributions to the field. The narratives provide inspiration and a reminder of the humanity of those contributing to innovation in analytical chemistry. Arranged alphabetically by last name, these innovators are Abraham Badu-Tawiah, Karl Booksh, Luis A. Colón, Purnendu (Sandy) Dasgupta, Jani C. Ingram, Lisa M. Jones, Matthew Lockett, Shelley Minteer, Renã A.S. Robinson, Joaquín Rodríguez-López, and Isiah M. Warner.
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Affiliation(s)
- Edgar A Arriaga
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, USA
| | - Jani C Ingram
- Department of Chemistry and Biochemistry, Northern Arizona University, Flagstaff, Arizona, USA
| | - Charles A Lucy
- Department of Chemistry, Gunning/Lemieux Chemistry Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Leyte Winfield
- Department of Chemistry and Biochemistry, Spelman College, Atlanta, Georgia, USA;
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5
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Chandran Prasanna Ramachandran R, Sreedevi GS, Edwin BT, Palantavida S, Viswanathan MR, Shereef A. Unveiling the key toxicity indicators and mechanisms on phytotoxicity of cerium dioxide nanoparticles in rice (Oryza sativa). CHEMOSPHERE 2025; 376:144270. [PMID: 40048914 DOI: 10.1016/j.chemosphere.2025.144270] [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: 06/18/2024] [Revised: 12/08/2024] [Accepted: 02/27/2025] [Indexed: 03/23/2025]
Abstract
The splendid varieties of cerium dioxide nanoparticles (nCeO2) and their diverse applications stimulated their uncontrolled discharge in the biological system. So, in the present study, Oryza sativa was adopted as a model plant and its phytotoxic effects were studied with neutrally charged, >12 nm sized spherical nCeO2 (0 g/L, 2 g/L, 4 g/L, 6 g/L, 8 g/L & 10 g/L). The studies were also conducted with bulk ceria counterparts and compared. This work is focused on a systematic approach to evaluate the phytotoxicity of nCeO2 in Oryza sativa, in terms of key toxicity indicators, nanoparticle uptake, and aggregation mechanisms. With this study, we propose a new sensing approach with non-fluorescent/non-chemiluminescent molecules for the detection of the generation of reactive oxygen species (ROS) to study the mechanism of phytotoxicity. An aggregation mechanism was also detailed to explicate the ROS-induced phytotoxicity. The study demonstrates that an increase in the production of ROS causes progressive cellular damage in Oryza sativa only at lower exposure level concentrations of nCeO2 (≥4 g/L). Our findings revealed that the key toxicity indicators and the actual nanoparticle uptake and aggregation mechanisms will decide the extent of phytotoxicity of nCeO2 in Oryza sativa.
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Affiliation(s)
| | - Gauri Santhoshkumar Sreedevi
- Department of Chemistry, T.K.M College of Arts and Science, Research Centre, University of Kerala, Kerala, India
| | - Boby T Edwin
- Cashew Export Promotion Council of India (CEPCI), Kollam, Kerala, 691001, India
| | - Shajesh Palantavida
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Kanakapura, Bangalore, Karnataka, 562112, India
| | - Mangalaraja R Viswanathan
- Facultad de Ingenieríay Ciencias, Universidad Adolfo Ibáñez, Diag. Las Torres 2640, Peñalolén, 7941169, Región Metropolitana, Santiago, Chile
| | - Anas Shereef
- Department of Chemistry, T.K.M College of Arts and Science, Research Centre, University of Kerala, Kerala, India.
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6
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Wang H, Xu Y, Zhang Z, Luo B, Hou D, Lu Y, Xie M, Guan W, Peng J, Wang H, Tao W. Exosome-Functionalized Self-Carrier Enzyme-Like/Drug With Triple Amplified Anti-Oxidative Stress for Synergistic Depression Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2025:e2411030. [PMID: 40259849 DOI: 10.1002/smll.202411030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2024] [Revised: 04/10/2025] [Indexed: 04/23/2025]
Abstract
Depression, a severe disorder affecting both physical and mental health, is commonly treated with first-line antidepressants, which often exhibit limited efficacy due to poor penetration of the blood-brain barrier (BBB) and significant side effects, thus requiring the exploitation of biocompatible and effective treatments. Recent studies suggest that depression is closely linked to an imbalance in oxidative stress and subsequent inflammatory responses. Antioxidant therapies and targeting oxidative stress in inflammatory depression are therefore emerging as promising strategies. In this study, an exosome-functionalized and geniposide (GEN) self-carried Prussian blue (PB) nanotherapeutic approach is fabricated to realize efficient BBB penetration for synergistic depression therapy. The porous PB carrier possesses multi-enzyme capabilities, which can effectively scavenge the accumulated ROS, protecting the slightly inflammatory acidic environment released GEN from oxidation, and the GEN subsequently works simultaneously with PB to activate the Nrf2-ARE pathway, enhancing the body's oxidative stress defense mechanisms synergistically. The triple-amplified anti-oxidant strategy of this nanomaterial is shown to mitigate microglial activation and the reduction in neuroplasticity, ultimately alleviating the pathological markers of inflammatory depression. Overall, the constructed nanomaterials underscore the therapeutic potential of anti-oxidative stress for synergistic removal of ROS and activation of the Nrf2-ARE pathway in the treatment of inflammatory depression.
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Affiliation(s)
- Hanqing Wang
- College of Pharmacy & Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ningxia Medical University, Yinchuan, 750004, China
| | - Yunzhu Xu
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zicheng Zhang
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Banxin Luo
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Department of General Surgery, Nanjing Drum Tower Hospital, Nanjing, 210023, China
| | - Dahai Hou
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Youyuan Lu
- College of Pharmacy & Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ningxia Medical University, Yinchuan, 750004, China
| | - Mingxia Xie
- College of Pharmacy & Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ningxia Medical University, Yinchuan, 750004, China
| | - Wenxian Guan
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Department of General Surgery, Nanjing Drum Tower Hospital, Nanjing, 210023, China
| | - Jinlei Peng
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Hui Wang
- School of Pharmacology, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Weiwei Tao
- School of Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
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7
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Putnam ST, Santiago-Carboney A, Qian P, Rodríguez-López J. Scanning Electrochemical Microscopy: An Evolving Toolbox for Revealing the Chemistry within Electrochemical Processes. Anal Chem 2025; 97:8147-8181. [PMID: 40193215 DOI: 10.1021/acs.analchem.4c06996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2025]
Affiliation(s)
- Seth T Putnam
- Department of Chemistry, University of Illinois Urbana-Champaign, 600 South Matthews Avenue, Urbana, Illinois 61801, United States
| | - Armando Santiago-Carboney
- Department of Chemistry, University of Illinois Urbana-Champaign, 600 South Matthews Avenue, Urbana, Illinois 61801, United States
| | - Peisen Qian
- Department of Chemistry, University of Illinois Urbana-Champaign, 600 South Matthews Avenue, Urbana, Illinois 61801, United States
| | - Joaquín Rodríguez-López
- Department of Chemistry, University of Illinois Urbana-Champaign, 600 South Matthews Avenue, Urbana, Illinois 61801, United States
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8
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Asserghine A, Baby A, N’Diaye J, Romo AB, Das S, Litts CA, Jain PK, Rodríguez-López J. Dissolved Oxygen Redox as the Source of Hydrogen Peroxide and Hydroxyl Radical in Sonicated Emulsive Water Microdroplets. J Am Chem Soc 2025; 147:11851-11858. [PMID: 40132215 PMCID: PMC11987017 DOI: 10.1021/jacs.4c16759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2024] [Revised: 03/12/2025] [Accepted: 03/14/2025] [Indexed: 03/27/2025]
Abstract
Sonicated emulsive water microdroplets (SEWMs) accelerate and enable a variety of catalyst-free chemical transformations. However, significant unanswered questions remain regarding the chemical intermediates they form and their possible redox origin. In this study, we identified dissolved O2 as the primary originator of reactive oxygen species (ROS) such as OH• and H2O2. We uncovered the role of dissolved O2 redox by using a combination of microelectrochemical methods to detect H2O2, isotopic methods to identify the source of H2O2, and a combination of electron spin resonance and the DMPO spin trap to detect radicals such as OH•. Notably, we found that H2O2 production is correlated with O2 content via a reduction pathway enabled by a sufficiently large reducing power that can additionally generate H2 and even perform Pb electroless deposition on Au and Cu metal substrates. Building on our findings, continuous O2 bubbling of SEWMs showed accumulation of H2O2 up to ∼88 mM in the aqueous phase within 1 h of sonication, demonstrating the scale-up promise of this method. Distinct to sonochemistry of a single phase, this study advances our understanding of the confluence of redox and chemical reaction mechanisms within SEWMs as a biphasic system. This insight paves the way for improving their reaction kinetics, yield, and selectivity, positioning these attractive redox microreactors as alternatives to traditional electrolyzers.
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Affiliation(s)
- Abdelilah Asserghine
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Beckman
Institute for Advanced Science and Technology, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Aravind Baby
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Department
of Materials Science and Engineering, University
of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Jeanne N’Diaye
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Beckman
Institute for Advanced Science and Technology, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Adolfo
I. B. Romo
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Supriya Das
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Beckman
Institute for Advanced Science and Technology, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Chloe A. Litts
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Prashant K. Jain
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Joaquín Rodríguez-López
- Department
of Chemistry, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Beckman
Institute for Advanced Science and Technology, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
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9
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Wang L, Cao J, Wang P, Fu Y, Chen J, Wang Z. Hydroperoxide-Independent Generation of Spin Trapping Artifacts by Quinones and DMPO: Implications for Radical Identification in Quinone-Related Reactions. ENVIRONMENT & HEALTH (WASHINGTON, D.C.) 2025; 3:143-153. [PMID: 40012872 PMCID: PMC11851217 DOI: 10.1021/envhealth.4c00142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Revised: 10/10/2024] [Accepted: 10/11/2024] [Indexed: 02/28/2025]
Abstract
Quinones, as highly redox active molecules in biology, are believed to react with hydroperoxides to produce highly reactive •OH, assuming that radical adducts are exclusively formed by the addition of free radicals to the spin trap as detected by the electron paramagnetic resonance (EPR) methodology. Here, direct formation of the same DMPO adduct as that formed by genuine radical trapping of •OH is discovered, while quinones (i.e., 1,4-benzoquinone (BQ), methyl-BQ (2-Me-BQ, 2,5-Me-BQ, 2,6-Me-BQ), and chlorinated-BQ (2-Cl-BQ, 2,5-Cl-BQ, 2,6-Cl-BQ)) meet with the spin trap 5,5-dimethyl-1-pyrroline N-oxide (DMPO), independent of peroxides. According to differences in alcohol-derived adducts (e.g., DMPO-CH2OH or DMPO-OCH3) while alcohol is attacked by •OH or DMPO•+, a nonradical mechanism is proposed for the BQ/DMPO system. This is further evidenced by the mass spectrometry data in which DMPO-OCH3 has been identified in BQ (or chlorinated-BQ)/DMPO systems. 17O incorporation experiments verify that hydroxyl oxygen in DMPO-OH originates from water. The DMPO-OH adduct might be formed via direct oxidation and water substitution or one-electron oxidation and nucleophilic addition. This study provides a peroxide-independent alternative route leading to DMPO-OH adduct in quinone-based systems, which has profound implications for assessing adverse health effects and even biogeochemical impacts of quinones if EPR is applied.
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Affiliation(s)
- Lingli Wang
- Shanghai
Key Lab for Urban Ecological Processes and Eco-Restoration, School
of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Jinhui Cao
- Shanghai
Key Lab for Urban Ecological Processes and Eco-Restoration, School
of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Pu Wang
- Shanghai
Key Lab for Urban Ecological Processes and Eco-Restoration, School
of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Yu Fu
- Shanghai
Key Lab for Urban Ecological Processes and Eco-Restoration, School
of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Jialin Chen
- Shanghai
Key Lab for Urban Ecological Processes and Eco-Restoration, School
of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
| | - Zhaohui Wang
- Shanghai
Key Lab for Urban Ecological Processes and Eco-Restoration, School
of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China
- Technology
Innovation Center for Land Spatial Eco-restoration in Metropolitan
Area, Ministry of Natural Resources, 3663 N. Zhongshan Road, Shanghai 200062, China
- Shanghai
Engineering Research Center of Biotransformation of Organic Solid
Waste, Shanghai 200241, China
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10
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Afsahi N, Zhang Z, Faez S, Noël JM, Panda MR, Majumder M, Naseri N, Lemineur JF, Kanoufi F. Seeing nanoscale electrocatalytic reactions at individual MoS 2 particles under an optical microscope: probing sub-mM oxygen reduction reaction. Faraday Discuss 2025; 257:107-125. [PMID: 39451059 PMCID: PMC11504976 DOI: 10.1039/d4fd00132j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 07/09/2024] [Indexed: 10/26/2024]
Abstract
MoS2 is a promising electrocatalytic material for replacing noble metals. Nanoelectrochemistry studies, such as using nanoelectrochemical cell confinement, have particularly helped in demonstrating the preferential electrocatalytic activity of MoS2 edges. These findings have been accompanied by considerable research efforts to synthesize edge-abundant nanomaterials. However, to fully apprehend their electrocatalytic performance, at the single particle level, new instrumental developments are also needed. Here, we feature a highly sensitive refractive index based optical microscopy technique, namely interferometric scattering microscopy (iSCAT), for monitoring local electrochemistry at single MoS2 petal-like sub-microparticles. This work focuses on the oxygen reduction reaction (ORR), which operates at low current densities and thus requires high-sensitivity imaging techniques. By employing a precipitation reaction to reveal the ORR activity and utilizing the high spatial resolution and contrast of iSCAT, we achieve the sensitivity required to evaluate the ORR activity at single MoS2 particles.
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Affiliation(s)
- Nikan Afsahi
- Université Paris Cité, CNRS, ITODYS, F-75013 Paris, France.
| | - Zhu Zhang
- Université Paris Cité, CNRS, ITODYS, F-75013 Paris, France.
- Nanophotonics, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
| | - Sanli Faez
- Nanophotonics, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
| | - Jean-Marc Noël
- Université Paris Cité, CNRS, ITODYS, F-75013 Paris, France.
| | - Manas Ranjan Panda
- Nanoscale Science and Engineering Laboratory (NSEL), Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC, 3800, Australia
- ARC Research Hub for Advanced Manufacturing with 2D Materials (AM2D), Monash University, Clayton, VIC, 3800, Australia
| | - Mainak Majumder
- Nanoscale Science and Engineering Laboratory (NSEL), Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC, 3800, Australia
- ARC Research Hub for Advanced Manufacturing with 2D Materials (AM2D), Monash University, Clayton, VIC, 3800, Australia
| | - Naimeh Naseri
- Nanoscale Science and Engineering Laboratory (NSEL), Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC, 3800, Australia
- ARC Research Hub for Advanced Manufacturing with 2D Materials (AM2D), Monash University, Clayton, VIC, 3800, Australia
- Department of Physics, Sharif University of Technology, Tehran 11365-9161, Iran
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11
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Liao Y, Zhang Z, Zhao Y, Zhang S, Zha K, Ouyang L, Hu W, Zhou W, Sun Y, Liu G. Glucose oxidase: An emerging multidimensional treatment option for diabetic wound healing. Bioact Mater 2025; 44:131-151. [PMID: 39484022 PMCID: PMC11525048 DOI: 10.1016/j.bioactmat.2024.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 10/06/2024] [Accepted: 10/06/2024] [Indexed: 11/03/2024] Open
Abstract
The healing of diabetic skin wounds is a complex process significantly affected by the hyperglycemic environment. In this context, glucose oxidase (GOx), by catalyzing glucose to produce gluconic acid and hydrogen peroxide, not only modulates the hyperglycemic microenvironment but also possesses antibacterial and oxygen-supplying functions, thereby demonstrating immense potential in the treatment of diabetic wounds. Despite the growing interest in GOx-based therapeutic strategies in recent years, a systematic summary and review of these efforts have been lacking. To address this gap, this review article outlines the advancements in the application of GOx and GOx-like nanozymes in the treatment of diabetic wounds, including reaction mechanisms, the selection of carrier materials, and synergistic therapeutic strategies such as multi-enzyme combinations, microneedle structures, and gas therapy. Finally, the article looks forward to the application prospects of GOx in aiding the healing of diabetic wounds and the challenges faced in translating these innovations to clinical practice. We sincerely hope that this review can provide readers with a comprehensive understanding of GOx-based diabetic treatment strategies, facilitate the rigorous construction of more robust multifunctional therapeutic systems, and ultimately benefit patients with diabetic wounds.
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Affiliation(s)
| | | | | | | | - Kangkang Zha
- Wuhan Union Hospital of Tongji Medical College of Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Jianghan District, Wuhan, Hubei, 430022, China
| | - Lizhi Ouyang
- Wuhan Union Hospital of Tongji Medical College of Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Jianghan District, Wuhan, Hubei, 430022, China
| | - Weixian Hu
- Wuhan Union Hospital of Tongji Medical College of Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Jianghan District, Wuhan, Hubei, 430022, China
| | - Wu Zhou
- Wuhan Union Hospital of Tongji Medical College of Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Jianghan District, Wuhan, Hubei, 430022, China
| | - Yun Sun
- Wuhan Union Hospital of Tongji Medical College of Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Jianghan District, Wuhan, Hubei, 430022, China
| | - Guohui Liu
- Wuhan Union Hospital of Tongji Medical College of Huazhong University of Science and Technology, No. 1277 Jiefang Avenue, Jianghan District, Wuhan, Hubei, 430022, China
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12
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Quan L, Zhou EC, Guo XW, Yin G. Antioxidant activity of herbal medicine Pyrrosia lingua evaluated by electron paramagnetic resonance spectroscopy. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2025; 17:476-484. [PMID: 39652227 DOI: 10.1039/d4ay02045f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2025]
Abstract
The hydroxyl radical (˙OH) is one of the most reactive and harmful reactive oxygen species in living organisms. In this study, we used electron paramagnetic resonance (EPR) spectroscopy to evaluate the antioxidant activity of herbal medicine Pyrrosia lingua (PL) by measuring its scavenging activity against ˙OH radicals. Using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical as a scavenging model, the PL extract (0.6 mg mL-1) was able to scavenge 95.1% of 0.5 mmol L-1 DPPH radicals, showing a quantitative linear relationship between the DPPH radical concentration and the double integral area under the characteristic peaks of the EPR spectra, with a coefficient of determination R2 = 0.9986. Additionally, we also studied the scavenging activity of the PL extract towards hyperactive ˙OH radicals through the reduction of the intensity of the DMPO-OH˙ adducts. The PL extract (0.5 mg mL-1) showed a high scavenging ability against extremely short-lived ˙OH radicals, with a scavenging rate of 93.6% for ˙OH radicals generated by continuous ultraviolet-irradiation of a 5 mM H2O2 aqueous solution for 30 minutes. This study developed a method based on EPR spectroscopy measurements to detect ˙OH radicals captured by herbal medicine, providing a reference for the application of PL in antioxidant and clinical disease therapies.
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Affiliation(s)
- Li Quan
- The First School of Clinical Medicine, Jiangsu University Key Laboratory of Tonifying Kidney and Anti-senescence, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Department of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China.
| | - En-Chao Zhou
- The First School of Clinical Medicine, Jiangsu University Key Laboratory of Tonifying Kidney and Anti-senescence, Nanjing University of Chinese Medicine, Nanjing, 210023, China
- Department of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China.
| | - Xue-Wen Guo
- Center of Modern Analysis, Nanjing University, Nanjing, 210023, China
| | - Gui Yin
- School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210023, China
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13
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Jiang H, Liu X, Zhao D, Jia YK, Wang YQ, Li W, Liu ZP, Wang JD. An Entropy-Driven Multipedal DNA Walker Microsensor for In Situ Electrochemical Detection of ATP. Anal Chem 2024; 96:20656-20664. [PMID: 39699555 DOI: 10.1021/acs.analchem.4c05482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2024]
Abstract
Microelectrode- and nanoelectrode-based electrochemistry has become a powerful tool for the in situ monitoring of various biomolecules in vivo. However, two challenges limit the application of micro- and nanoelectrodes: the difficulty of highly sensitive detection of nonelectroactive molecules and the specific detection of target molecules in complex biological environments. Herein, we propose an electrochemical microsensor based on an entropy-driven multipedal DNA walker for the highly sensitive and selective detection of ATP. An ATP aptamer was immobilized on the microelectrode surface to form the DNA walker track for selective ATP recognition. Multiple walking "legs" were attached to quantum dots to create the multipedal DNA walker. ATP was selectively captured by the ATP aptamer, triggering the autonomous movement of the multipedal DNA walker on the microelectrode interface, which brought methylene blue (MB) closer to the microelectrode interface, realizing a cascade signal amplification. Additionally, ATP release induced by hypotonic conditions in BV2 cells was successfully monitored, indicating that increased cell volume enhances ATP release. This multipedal DNA walker microsensor offers a novel strategy for in situ, highly sensitive, and selective monitoring of nonelectroactive biomolecules in vivo, which is crucial for investigating the neurochemical processes involved in neurological diseases.
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Affiliation(s)
- Hong Jiang
- State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Xiao Liu
- State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Dong Zhao
- State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Yu-Kang Jia
- State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Ya-Qin Wang
- State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Wei Li
- State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Zhao-Peng Liu
- State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Ji-Dong Wang
- State Key Laboratory of Metastable Materials Science and Technology, Nano-Biotechnology Key Lab of Hebei Province, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
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14
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Theofanous A, Deligiannakis Y, Louloudi M. Hybrids of Gallic Acid@SiO 2 and {Hyaluronic-Acid Counterpats}@SiO 2 against Hydroxyl ( ●OH) Radicals Studied by EPR: A Comparative Study vs Their Antioxidant Hydrogen Atom Transfer Activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:26412-26424. [PMID: 39644266 DOI: 10.1021/acs.langmuir.4c02760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2024]
Abstract
Hydrogen atom transfer (HAT) and single electron transfer (SET) are two fundamental pathways for antiradical/antioxidant processes; however, a systematic in-tandem operational evaluation of the same system is lacking. Herein, we present a comparative study of the HAT and SET processes applied to a library of well-characterized hybrid materials SiO2@GA, SiO2@GLA, SiO2@GLAM, and the doubly hybrid material {GLA@SiO2@GLAM}. Hydroxyl radicals (•OH), produced by a Fenton system, react via the single electron transfer (SET) pathway and hydrogen atom transfer, through oxygen- and carbon-atoms, respectively, while the stable-radical DPPH via the HAT pathway through oxygen-atoms. Electron paramagnetic resonance spectroscopy (EPR), eminently suited for in situ detection and quantification of free radicals, was used as a state-of-the-art tool to monitor •OH using the spin-trapping-EPR method. We found that the SiO2@GA hybrid exhibited the highest SET •OH-scavenging activity i.e., [2.7 mol of •OH per mol of grafted GA]. Then, SiO2@GLA, SiO2@GLAM, and GLA@SiO2@GLAM can scavenge 1.2, 1.3, and 0.57 mol of •OH per mol of anchored organic, respectively. The HAT efficiency for SiO2@GA was [2.0 mol of DPPH per mol of grafted GA], while SiO2@GLA, SiO2@GLAM, and GLA@SiO2@GLAM exhibited a HAT efficiency of 1.1 DPPH moles per mol of anchored organic. The data are analyzed based on the molecular structure of the organics and their -R-OH moieties. Accordingly, based on the present data we suggest that for hydroxyl (•OH) radicals, the mechanisms involved are SET from an oxygen atom and HAT from a carbon atom. In contrast, for DPPH radicals, the HAT mechanism is exclusively operating and involves hydrogen atom abstraction from OH groups.
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Affiliation(s)
- Annita Theofanous
- Laboratory of Biomimetic Catalysis and Hybrid Materials, Department of Chemistry, University of Ioannina, Panepistimioupoli, Ioannina GR-45110, Greece
| | - Yiannis Deligiannakis
- Laboratory of Physical Chemistry of Materials and Environment, Department of Physics, University of Ioannina, Panepistimioupoli, Ioannina GR-45110, Greece
| | - Maria Louloudi
- Laboratory of Biomimetic Catalysis and Hybrid Materials, Department of Chemistry, University of Ioannina, Panepistimioupoli, Ioannina GR-45110, Greece
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15
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Kicheeva AG, Sushko ES, Bondarenko LS, Baimuratova RK, Kydralieva KA, Schwaminger SP, Prassl R, Tropskaya NS, Dzhardimalieva GI, Smirnykh DV, Martynova AA, Kudryasheva NS. Cytotoxic and radical activities of metal-organic framework modified with iron oxide: Biological and physico-chemical analyses. Chem Biol Interact 2024; 399:111150. [PMID: 39025288 DOI: 10.1016/j.cbi.2024.111150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 07/02/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024]
Abstract
Metal-organic framework (MOF) modified with iron oxide, Fe3O4-MOF, is a perspective drug delivery agent, enabling magnetic control and production of active hydroxyl radicals, •OH, via the Fenton reaction. This paper studies cytotoxic and radical activities of Fe-containing nanoparticles (NPs): Fe3O4-MOF and its components - bare Fe3O4 and MOF (MIL-88B). Luminous marine bacteria Photobacteriumphosphoreum were used as a model cellular system to monitor bioeffects of the NPs. Neither the NPs of Fe3O4-MOF nor MOF showed cytotoxic effects in a wide range of concentrations (<10 mg/L); while Fe3O4 was toxic at >3·10-3 mg/L. The NPs of Fe3O4 did not affect the bacterial bioluminescence enzymatic system; their toxic effect was attributed to cellular membrane processes. The integral content of reactive oxygen species (ROS) was determined using a chemiluminescence luminol assay. Bacteria mitigated excess of ROS in water suspensions of Fe3O4-MOF and MOF, maintaining bioluminescence intensity closer to the control; this resulted in low toxicity of these NPs. We estimated the activity of •OH radicals in the NPs samples with physical and chemical methods - spin capture technology (using electron paramagnetic resonance spectroscopy) and methylene blue degradation. Physico-chemical interpretation of cellular responses is provided in terms of iron content, iron ions release and •OH radical production.
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Affiliation(s)
- Arina G Kicheeva
- Institute of Biophysics SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 660036, Krasnoyarsk, Russia.
| | - Ekaterina S Sushko
- Institute of Biophysics SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 660036, Krasnoyarsk, Russia; Siberian Federal University, 660041, Krasnoyarsk, Russia.
| | - Lyubov S Bondarenko
- Moscow Aviation Institute (National Research University), 125993, Moscow, Russia
| | - Rose K Baimuratova
- Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 142432, Chernogolovka, Moscow Region, Russia
| | - Kamila A Kydralieva
- Moscow Aviation Institute (National Research University), 125993, Moscow, Russia
| | - Sebastian P Schwaminger
- BioTechMed-Graz, 8010, Graz, Austria; Division of Medicinal Chemistry, Medizinische Universität Graz, Otto Loewi Forschungszentrum, Neue Stiftingtalstraße 6, 3. Stock, A-8010, Graz, Austria
| | - Ruth Prassl
- BioTechMed-Graz, 8010, Graz, Austria; Gottfried Schatz Research Center, Division of Biophysics, Medical University of Graz, Neue Stiftingtalstraße 2, Graz, 8010, Austria
| | - Nataliya S Tropskaya
- Moscow Aviation Institute (National Research University), 125993, Moscow, Russia; Sklifosovsky Institute for Emergency Medicine, Moscow, Russia
| | - Gulzhian I Dzhardimalieva
- Moscow Aviation Institute (National Research University), 125993, Moscow, Russia; Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 142432, Chernogolovka, Moscow Region, Russia
| | | | | | - Nadezhda S Kudryasheva
- Institute of Biophysics SB RAS, Federal Research Center 'Krasnoyarsk Science Center SB RAS', 660036, Krasnoyarsk, Russia; Siberian Federal University, 660041, Krasnoyarsk, Russia.
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16
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Ling L, Xi M, Wang H, Xiao R, Zheng L, Hu L, Gu W, Zhu C. Tuning electrochemical water activation over NiIr single-atom alloy aerogels for stable electrochemiluminescence. Sci Bull (Beijing) 2024; 69:2387-2394. [PMID: 38679503 DOI: 10.1016/j.scib.2024.04.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/01/2024] [Accepted: 04/12/2024] [Indexed: 05/01/2024]
Abstract
The anodic oxygen evolution reaction is a well-acknowledged side reaction in traditional aqueous electrochemiluminescence (ECL) systems due to the generation and surface aggregation of oxygen at the electrode, which detrimentally impacts the stability and efficiency of ECL emission. However, the effect of reactive oxygen species generated during water oxidation on ECL luminophores has been largely overlooked. Taking the typical luminol emitter as an example, herein, we employed NiIr single-atom alloy aerogels possessing efficient water oxidation activity as a prototype co-reaction accelerator to elucidate the relationship between ECL behavior and water oxidation reaction kinetics for the first time. By regulating the concentration of hydroxide ions in the electrolyte, the electrochemical oxidation processes of both luminol and water are finely tuned. When the concentration of hydroxide ions in electrolyte is low, the kinetics of water oxidation is attenuated, which limits the generation of oxygen, effectively mitigates the influence of oxygen accumulation on the ECL strength, and offers a novel perspective for harnessing side reactions in ECL systems. Finally, a sensitive and stable sensor for antioxidant detection was constructed and applied to the practical sample detection.
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Affiliation(s)
- Ling Ling
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Mengzhen Xi
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Hengjia Wang
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Runshi Xiao
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China; Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Wuhan Institute of Technology, Wuhan 430205, China
| | - Lirong Zheng
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Liuyong Hu
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Wuhan Institute of Technology, Wuhan 430205, China.
| | - Wenling Gu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China.
| | - Chengzhou Zhu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, China.
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17
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Zhang G, Li Y, Zhao C, Gu J, Zhou G, Shi Y, Zhou Q, Xiao F, Fu WJ, Chen Q, Ji Q, Qu J, Liu H. Redox-neutral electrochemical decontamination of hypersaline wastewater with high technology readiness level. NATURE NANOTECHNOLOGY 2024; 19:1130-1140. [PMID: 38724611 DOI: 10.1038/s41565-024-01669-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 04/01/2024] [Indexed: 08/18/2024]
Abstract
Industrial hypersaline wastewaters contain diverse pollutants that harm the environment. Recovering clean water, alkali and acid from these wastewaters can promote circular economy and environmental protection. However, current electrochemical and advanced oxidation processes, which rely on hydroxyl radicals to degrade organic compounds, are inefficient and energy intensive. Here we report a flow-through redox-neutral electrochemical reactor (FRER) that effectively removes organic contaminants from hypersaline wastewaters via the chlorination-dehalogenation-hydroxylation route involving radical-radical cross-coupling. Bench-scale experiments demonstrate that the FRER achieves over 75% removal of total organic carbon across various compounds, and it maintains decontamination performance for over 360 h and continuously treats real hypersaline wastewaters for two months without corrosion. Integrating the FRER with electrodialysis reduces operating costs by 63.3% and CO2 emissions by 82.6% when compared with traditional multi-effect evaporation-crystallization techniques, placing our system at technology readiness levels of 7-8. The desalinated water, high-purity NaOH (>95%) and acid produced offset industrial production activities and thus support global sustainable development objectives.
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Affiliation(s)
- Gong Zhang
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Yongqi Li
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
- School of Hydraulic and Hydropower Engineering, North China Electric Power University, Beijing, China
| | - Chenxuan Zhao
- Shanghai Key Laboratory of Magnetic Resonance, State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai, China
| | - Jiabao Gu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Gang Zhou
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, China
| | - Yanfeng Shi
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Qi Zhou
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Feng Xiao
- School of Hydraulic and Hydropower Engineering, North China Electric Power University, Beijing, China
| | - Wen-Jie Fu
- College of Environment and Resources, Guangxi Normal University, Guilin, China
| | - Qingbai Chen
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Qinghua Ji
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Jiuhui Qu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Huijuan Liu
- Center for Water and Ecology, State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China.
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18
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Qiu Y, Wu Y, Wei X, Luo X, Jiang W, Zheng L, Gu W, Zhu C, Yamauchi Y. Improvement in ORR Durability of Fe Single-Atom Carbon Catalysts Hybridized with CeO 2 Nanozyme. NANO LETTERS 2024; 24:9034-9041. [PMID: 38990087 DOI: 10.1021/acs.nanolett.4c02178] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
FeNC catalysts are considered one of the most promising alternatives to platinum group metals for the oxygen reduction reaction (ORR). Despite the extensive research on improving ORR activity, the undesirable durability of FeNC is still a critical issue for its practical application. Herein, inspired by the antioxidant mechanism of natural enzymes, CeO2 nanozymes featuring catalase-like and superoxide dismutase-like activities were coupled with FeNC to mitigate the attack of reactive oxygen species (ROS) for improving durability. Benefiting from the multienzyme-like activities of CeO2, ROS generated from FeNC is instantaneously eliminated to alleviate the corrosion of carbon and demetallization of metal sites. Consequently, FeNC/CeO2 exhibits better ORR durability with a decay of only 5 mV compared to FeNC (18 mV) in neutral electrolyte after 10k cycles. The FeNC/CeO2-based zinc-air battery also shows minimal voltage decay over 140 h in galvanostatic discharge-charge cycling tests, outperforming FeNC and commercial Pt/C.
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Affiliation(s)
- Yiwei Qiu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China
| | - Yu Wu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China
| | - Xiaoqian Wei
- Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo Shinjuku, Tokyo, 169-8555, Japan
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Xin Luo
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China
| | - Wenxuan Jiang
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics Department, Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Wenling Gu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China
| | - Chengzhou Zhu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, People's Republic of China
| | - Yusuke Yamauchi
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
- Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero Giheung-gu, Yongin-si, Gyeonggi-do 17104, South Korea
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19
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Xi M, Wu Y, Li J, Wang H, Qin Y, Wang C, Hu L, Gu W, Zhu C. Pre-Adsorbed H-Mediated Electrochemiluminescence. NANO LETTERS 2024; 24:8809-8817. [PMID: 39008523 DOI: 10.1021/acs.nanolett.4c01093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
In conventional electrochemiluminescence (ECL) systems, the presence of the competitive cathodic hydrogen evolution reaction (HER) in aqueous electrolytes is typically considered to be a side reaction, leading to a reduced ECL efficiency and stability due to H2 generation and aggregation at the electrode surface. However, the significant role of adsorbed hydrogen (H*) as a key intermediate, formed during the Volmer reaction in the HER process, has been largely overlooked. In this study, employing the luminol-H2O2 system as a model, we for the first time demonstrate a novel H*-mediated coreactant activation mechanism, which remarkably enhances the ECL intensity. H* facilitates cleavage of the O-O bond in H2O2, selectively generating highly reactive hydroxyl radicals for efficient ECL reactions. Experimental investigations and theoretical calculations demonstrate that this H*-mediated mechanism achieves superior coreactant activation compared to the conventional direct electron transfer pathway, which unveils a new pathway for coreactant activation in the ECL systems.
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Affiliation(s)
- Mengzhen Xi
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yu Wu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Jingshuai Li
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Hengjia Wang
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Ying Qin
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Canglong Wang
- Institute of Modern Physics, Chinese Academy of Science, Lanzhou 730000, P. R. China
| | - Liuyong Hu
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Wenling Gu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Chengzhou Zhu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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20
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Putnam ST, Rodríguez-López J. Real-time investigation of reactive oxygen species and radicals evolved from operating Fe-N-C electrocatalysts during the ORR: potential dependence, impact on degradation, and structural comparisons. Chem Sci 2024; 15:10036-10045. [PMID: 38966386 PMCID: PMC11220586 DOI: 10.1039/d4sc01553c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 05/28/2024] [Indexed: 07/06/2024] Open
Abstract
Improving the stability of platinum-group-metal-free (PGM-free) catalysts is a critical roadblock to the development of economically feasible energy storage and conversion technologies. Fe-N-C catalysts, the most promising class of PGM-free catalysts, suffer from rapid degradation. The generation of reactive oxygen species (ROS) during the oxygen reduction reaction (ORR) has been proposed as a central cause of this loss of activity. However, there is insufficient understanding of the generation and dynamics of ROS under catalytic conditions due to the difficulty of detecting and quantifying short-lived ROS such as the hydroxyl radical, OH˙. To accomplish this, we use operando scanning electrochemical microscopy (SECM) to probe the production of radicals by a commercial pyrolyzed Fe-N-C catalyst in real-time using a redox-active spin trap methodology. SECM showed the monotonic production of OH˙ which followed the ORR activity. Our results were thoroughly backed using electron spin resonance confirmation to show that the hydroxyl radical is the dominant radical species produced. Furthermore, OH˙ and H2O2 production followed distinct trends. ROS studied as a function of catalyst degradation also showed a decreased production, suggesting its relation to the catalytic activity of the sample. The structural origins of ROS production were also probed using model systems such as iron phthalocyanine (FePc) and Fe3O4 nanoparticles, both of which showed significant generation of OH˙ during the ORR. These results provide a comprehensive insight into the critical, yet under-studied, aspects of the production and effects of ROS on electrocatalytic systems and open the door for further mechanistic and kinetic investigation using SECM.
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Affiliation(s)
- Seth T Putnam
- Department of Chemistry, University of Illinois Urbana-Champaign 600 S. Matthews Ave. Urbana IL 61801 USA
| | - Joaquín Rodríguez-López
- Department of Chemistry, University of Illinois Urbana-Champaign 600 S. Matthews Ave. Urbana IL 61801 USA
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21
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Hu Z, Zhu J, Chen R, Wu Y, Zheng K, Liu C, Pan Y, Chen J, Sun Y, Xie Y. High-Rate and Selective C 2H 6-to-C 2H 4 Photodehydrogenation Enabled by Partially Oxidized Pd δ+ Species Anchored on ZnO Nanosheets under Mild Conditions. J Am Chem Soc 2024. [PMID: 38842530 DOI: 10.1021/jacs.4c02827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Photocatalytic C2H6-to-C2H4 conversion is very promising, yet it remains a long-lasting challenge due to the high C-H bond dissociation energy of 420 kJ mol-1. Herein, partially oxidized Pdδ+ species anchored on ZnO nanosheets are designed to weaken the C-H bond by the electron interaction between Pdδ+ species and H atoms, with efforts to achieve high-rate and selective C2H6-to-C2H4 conversion. X-ray photoelectron spectra, Bader charge calculations, and electronic localization function demonstrate the presence of partially oxidized Pdδ+ sites, while quasi-in situ X-ray photoelectron spectra disclose the Pdδ+ sites initially adopt and then donate the photoexcited electrons for C2H6 dehydrogenation. In situ electron paramagnetic resonance spectra, in situ Fourier transform infrared spectra, and trapping agent experiments verify C2H6 initially converts to CH3CH2OH via ·OH radicals, then dehydroxylates to CH3CH2· and finally to C2H4, accompanied by H2 production. Density-functional theory calculations elucidate that loading Pd site can lengthen the C-H bond of C2H6 from 1.10 to 1.12 Å, which favors the C-H bond breakage, affirmed by a lowered energy barrier of 0.04 eV. As a result, the optimized 5.87% Pd-ZnO nanosheets achieve a high C2H4 yield of 16.32 mmol g-1 with a 94.83% selectivity as well as a H2 yield of 14.49 mmol g-1 from C2H6 dehydrogenation in 4 h, outperforming all the previously reported photocatalysts under similar conditions.
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Affiliation(s)
- Zexun Hu
- Hefei National Research Center for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Juncheng Zhu
- Hefei National Research Center for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Runhua Chen
- Hefei National Research Center for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Yang Wu
- Hefei National Research Center for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Kai Zheng
- Hefei National Research Center for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Chengyuan Liu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
| | - Yang Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, China
| | - Jiafu Chen
- Hefei National Research Center for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Yongfu Sun
- Hefei National Research Center for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Yi Xie
- Hefei National Research Center for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, China
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22
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Ren X, Yang Y, Kong X, Liu Z. Integrin α vβ 3-targeted self-assembled polypeptide nanomicelles for efficacious sonodynamic therapy against breast cancer. NANOSCALE 2024; 16:9953-9965. [PMID: 38693876 DOI: 10.1039/d4nr00794h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Sonodynamic therapy (SDT) is an advanced non-invasive cancer treatment strategy with moderate tissue penetration, less invasiveness and a reliable curative effect. However, due to the low stability, potential bio-toxicity and lack of tumor targeting capability of most sonosensitizers, the vast clinical application of SDT has been challenging and limited. Therefore, it is desirable to develop a novel approach to implement sonosensitizers to SDT for cancer treatments. In this study, an amphiphilic polypeptide was designed to effectively encapsulate rose bengal (RB) as a model sonosensitizer to form peptido-nanomicelles (REPNs). The as-fabricated REPNs demonstrated satisfactory tumor targeting and fluorescence performances, which made them superb imaging tracers in vivo. In the meantime, they generated considerable amounts of reactive oxygen species (ROS) to promote tumor cell apoptosis under ultrasound irradiation and showed excellent anti-tumor performance without obvious side effects. These engineered nanomicelles in combination with medical ultrasound may be used to achieve integrin αvβ3-targeted sonodynamic therapy against breast cancer, and it is also a promising non-invasive cancer treatment strategy for clinical translations.
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Affiliation(s)
- Xueli Ren
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, 300072, Tianjin, China.
| | - Yanxi Yang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, 300072, Tianjin, China.
| | - Xinru Kong
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, 300072, Tianjin, China.
| | - Zhe Liu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, 300072, Tianjin, China.
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23
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Zhou Y, Wu Y, Luo Z, Ling L, Xi M, Li J, Hu L, Wang C, Gu W, Zhu C. Regulating Reactive Oxygen Species over M-N-C Single-Atom Catalysts for Potential-Resolved Electrochemiluminescence. J Am Chem Soc 2024; 146:12197-12205. [PMID: 38629507 DOI: 10.1021/jacs.4c02986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The development of potential-resolved electrochemiluminescence (ECL) systems with dual emitting signals holds great promise for accurate and reliable determination in complex samples. However, the practical application of such systems is hindered by the inevitable mutual interaction and mismatch between different luminophores or coreactants. In this work, for the first time, by precisely tuning the oxygen reduction performance of M-N-C single-atom catalysts (SACs), we present a dual potential-resolved luminol ECL system employing endogenous dissolved O2 as a coreactant. Using advanced in situ monitoring and theoretical calculations, we elucidate the intricate mechanism involving the selective and efficient activation of dissolved O2 through central metal species modulation. This modulation leads to the controlled generation of hydroxyl radical (·OH) and superoxide radical (O2·-), which subsequently trigger cathodic and anodic luminol ECL emission, respectively. The well-designed Cu-N-C SACs, with their moderate oxophilicity, enable the simultaneous generation of ·OH and O2·-, thereby facilitating dual potential-resolved ECL. As a proof of concept, we employed the principal component analysis statistical method to differentiate antibiotics based on the output of the dual-potential ECL signals. This work establishes a new avenue for constructing a potential-resolved ECL platform based on a single luminophore and coreactant through precise regulation of active intermediates.
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Affiliation(s)
- Yan Zhou
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yu Wu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Zhen Luo
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Ling Ling
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Mengzhen Xi
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Jingshuai Li
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Liuyong Hu
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Hubei Engineering Technology Research Center of Optoelectronic and New Energy Materials, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Canglong Wang
- Institute of Modern Physics, University of Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Wenling Gu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Chengzhou Zhu
- State Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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24
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Alanazi M, Yong J, Wu M, Zhang Z, Tian D, Zhang R. Recent Advances in Detection of Hydroxyl Radical by Responsive Fluorescence Nanoprobes. Chem Asian J 2024; 19:e202400105. [PMID: 38447112 DOI: 10.1002/asia.202400105] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/06/2024] [Accepted: 03/06/2024] [Indexed: 03/08/2024]
Abstract
Hydroxyl radical (•OH), a highly reactive oxygen species (ROS), is assumed as one of the most aggressive free radicals. This radical has a detrimental impact on cells as it can react with different biological substrates leading to pathophysiological disorders, including inflammation, mitochondrion dysfunction, and cancer. Quantification of this free radical in-situ plays critical roles in early diagnosis and treatment monitoring of various disorders, like macrophage polarization and tumor cell development. Luminescence analysis using responsive probes has been an emerging and reliable technique for in-situ detection of various cellular ROS, and some recently developed •OH responsive nanoprobes have confirmed the association with cancer development. This paper aims to summarize the recent advances in the characterization of •OH in living organisms using responsive nanoprobes, covering the production, the sources of •OH, and biological function, especially in the development of related diseases followed by the discussion of luminescence nanoprobes for •OH detection.
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Affiliation(s)
- Mazen Alanazi
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland, 4072, Australia
| | - Jiaxi Yong
- Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, St. Lucia, Queensland, 4072, Australia
| | - Miaomiao Wu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland, 4072, Australia
| | - Zexi Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland, 4072, Australia
| | - Dihua Tian
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland, 4072, Australia
| | - Run Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland, 4072, Australia
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25
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Dong H, Jiang Z, Chen Y, Han H, Zhou Y, Wang X, Xu M, Liu L. Ratiometric electrochemical determination of hydroxyl radical based on graphite paper modified with metal-organic frameworks and impregnated with salicylic acid. Mikrochim Acta 2024; 191:121. [PMID: 38308135 DOI: 10.1007/s00604-024-06202-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/08/2024] [Indexed: 02/04/2024]
Abstract
Hydroxyl radical (•OH) detection is pivotal in medicine, biochemistry and environmental chemistry. Yet, electrochemical method-specific detection is challenging because of hydroxyl radicals' high reactivity and short half-life. In this study, we aimed to modify the electrode surface with a specific recognition probe for •OH. To achieve this, we conducted a one-step hydrothermal process to fabricate a CoZnMOF bimetallic organic framework directly onto conductive graphite paper (Gp). Subsequently, we introduced salicylic acid (SA) and methylene blue (MB), which easily penetrated the pores of CoZnMOF. By selectively capturing •OH by SA and leveraging the electrochemical signal generated by the reaction product, we successfully developed an electrochemical sensor Gp/CoZnMOF/SA + MB. The prepared sensor exhibited a good linear relationship with •OH concentrations ranging from 1.25 to 1200 nM, with a detection limit of 0.2 nM. Additionally, the sensor demonstrated excellent reproducibility and accuracy due to the incorporation of an internal reference. It exhibited remarkable selectivity for •OH detection, unaffected by other electrochemically active substances. The establishment of this sensor provides a way to construct MOF-modified sensors for the selective detection of other reactive oxygen species (ROS), offering a valuable experimental basis for ROS-related disease research and environmental safety investigations.
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Affiliation(s)
- Hui Dong
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, People's Republic of China.
| | - Zhenlong Jiang
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, People's Republic of China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, People's Republic of China
| | - Yanan Chen
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, People's Republic of China
| | - Huabo Han
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, People's Republic of China.
| | - Yanli Zhou
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, People's Republic of China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, People's Republic of China
| | - Xiaobing Wang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, People's Republic of China.
| | - Maotian Xu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, People's Republic of China
| | - Lantao Liu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases, Shangqiu Normal University, Shangqiu, 476000, People's Republic of China.
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, People's Republic of China.
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26
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Woo HK, Gautam AK, Barroso-Martínez JS, Baddorf AP, Zhou K, Choi YY, He J, Mironenko AV, Rodríguez-López J, Cai L. Defect Engineering of WO 3 by Rapid Flame Reduction for Efficient Photoelectrochemical Conversion of Methane into Liquid Oxygenates. NANO LETTERS 2023; 23:11493-11500. [PMID: 38061056 DOI: 10.1021/acs.nanolett.3c03131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Photoelectrochemical (PEC) conversion is a promising way to use methane (CH4) as a chemical building block without harsh conditions. However, the PEC conversion of CH4 to value-added chemicals remains challenging due to the thermodynamically favorable overoxidation of CH4. Here, we report WO3 nanotube (NT) photoelectrocatalysts for PEC CH4 conversion with high liquid product selectivity through defect engineering. By tuning the flame reduction treatment, we carefully controlled the oxygen vacancies of WO3 NTs. The optimally reduced WO3 NTs suppressed overoxidation of CH4 showing a high total C1 liquid selectivity of 69.4% and a production rate of 0.174 μmol cm-2 h-1. Scanning electrochemical microscopy revealed that oxygen vacancies can restrain the production of hydroxyl radicals, which, in excess, could further oxidize C1 intermediates to CO2. Additionally, band diagram analysis and computational studies elucidated that oxygen vacancies thermodynamically suppress overoxidation. This work introduces a strategy for understanding and controlling the selectivity of photoelectrocatalysts for direct conversion of CH4 to liquids.
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Affiliation(s)
- Ho Kun Woo
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Ankit Kumar Gautam
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jaxiry S Barroso-Martínez
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Arthur P Baddorf
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Kai Zhou
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yoon Young Choi
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jiajun He
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Alexander V Mironenko
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Joaquín Rodríguez-López
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Lili Cai
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
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27
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Li N, Wang P, Xie Y, Wang B, Zhu C, Xue L, Han X, Gu N, Sun J. Expression of clMagR/clCry4 protein in mBMSCs provides T 2-contrast enhancement of MRI. Acta Biomater 2023; 172:309-320. [PMID: 37778484 DOI: 10.1016/j.actbio.2023.09.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 09/16/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
Here, we propose for the first time the evaluation of magnetosensitive clMagR/clCry4 as a magnetic resonance imaging (MRI) reporter gene that imparts sensitivity to endogenous contrast in eukaryotic organisms. Using a lentiviral vector, we introduced clMagR/clCry4 into C57BL/6 mice-derived bone marrow mesenchymal stem cells (mBMSCs), which could specifically bind with iron, significantly affected MRI transverse relaxation, and generated readily detectable contrast without adverse effects in vivo. Specifically, clMagR/clCry4 makes mBMSCs beneficial for enhancing the sensitivity of MRI-R2 for iron-bearing granules, in which cells recruit exogenous iron and convert these stores into an MRI-detectable contrast; this is not achievable with control cells. Additionally, Prussian blue staining was performed together with ultrathin cell slices to provide direct evidence of natural iron-bearing granules being detectable on MRI. Hence, it was inferred that the sensitivity of MRI detection should be correlated with clMagR/clCry4 and exogenous iron. Taken together, the clMagR/clCry4 has great potential as an MRI reporter gene. STATEMENT OF SIGNIFICANCE: In this study, we propose the evaluation of magnetosensitive clMagR/clCry4 as an MRI reporter gene, imparting detection sensitivity to eukaryotic mBMSCs for endogenous contrast. At this point, the clMagR and clCry4 were located within the cytoplasm and possibly influence each other. The clMagR/clCry4 makes mBMSCs beneficial for enhancing the sensitivity of MRI-R2 for iron-bearing granules, in which protein could specifically bind with iron and convert these stores into MRI-detectable contrast; this is not achieved by control cells. The viewpoint was speculated that the clMagR/clCry4 and exogenous iron were complementary to each other. Additionally, Prussian blue staining was performed together with TEM observations to provide direct evidence that the iron-bearing granules were sensitive to MRI.
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Affiliation(s)
- Nuan Li
- Jiangsu Key Laboratory of Biomaterials and Devices, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Peng Wang
- Jiangsu Key Laboratory of Biomaterials and Devices, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing 210096, China; Department of Sports Medicine and Adult Reconstructive Surgery, the Affiliated Drum Tower Hospital of Nanjing University, Nanjing 210008, China
| | - Yuanyuan Xie
- Clinical Stem Cell Center, the Affiliated Drum Tower Hospital of Nanjing University, Nanjing 210008, China
| | - Bin Wang
- Clinical Stem Cell Center, the Affiliated Drum Tower Hospital of Nanjing University, Nanjing 210008, China
| | - Chenzhuo Zhu
- Southeast University-Monash University Joint Graduate School, Southeast University, Suzhou 215123, China
| | - Le Xue
- Jiangsu Key Laboratory of Biomaterials and Devices, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Xiaofeng Han
- School of Biological Sciences and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Ning Gu
- Medical School, Nanjing University, Nanjing 210093, China
| | - Jianfei Sun
- Jiangsu Key Laboratory of Biomaterials and Devices, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing 210096, China.
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28
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Asserghine A, Baby A, Putnam ST, Qian P, Gao E, Zhao H, Rodríguez-López J. In situ detection of reactive oxygen species spontaneously generated on lead acid battery anodes: a pathway for degradation and self-discharge at open circuit. Chem Sci 2023; 14:12292-12298. [PMID: 37969580 PMCID: PMC10631249 DOI: 10.1039/d3sc04736a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 10/17/2023] [Indexed: 11/17/2023] Open
Abstract
Prospects for refurbishing and recycling energy storage technologies such as lead acid batteries (LABs) prompt a better understanding of their failure mechanisms. LABs suffer from a high self-discharge rate accompanied by deleterious hard sulfation processes which dramatically decrease cyclability. Furthermore, the evolution of H2, CO, and CO2 also poses safety risks. Despite the maturity of LAB technologies, the mechanisms behind these degradation phenomena have not been well established, thus hindering attempts to extend the cycle life of LABs in a sustainable manner. Here, we investigate the effect of the oxygen reduction reaction (ORR) on the sulfation of LAB anodes under open circuit (OC). For the first time, we found that the sulfation reaction is significantly enhanced in the presence of oxygen. Interestingly, we also report the formation of reactive oxygen species (ROS) during this process, known to hamper cycle life of batteries via corrosion. Electron spin resonance (ESR) and in situ scanning electrochemical microscopy (SECM) unambiguously demonstrated the presence of OH˙ and of H2O2 as the products of spontaneous ORR on LAB anodes. High temporal resolution SECM measurements of the hydrogen evolution reaction (HER) during LAB anode corrosion displayed a stochastic nature, highlighting the value of the in situ experiment. Balancing the ORR and HER prompts self-discharge while reaction of the carbon additives with highly oxidizing ROS may explain previously reported parasitic reactions generating CO and CO2. This degradation mode implicating ROS and battery corrosion impacts the design, operation, and recycling of LABs as well as upcoming chemistries involving the ORR.
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Affiliation(s)
- Abdelilah Asserghine
- Department of Chemistry, University of Illinois Urbana-Champaign 600 S Mathews Ave. Urbana IL 61801 USA
| | - Aravind Baby
- Department of Chemistry, University of Illinois Urbana-Champaign 600 S Mathews Ave. Urbana IL 61801 USA
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign 1304 W Green St. Urbana IL 61801 USA
| | - Seth T Putnam
- Department of Chemistry, University of Illinois Urbana-Champaign 600 S Mathews Ave. Urbana IL 61801 USA
| | - Peisen Qian
- Department of Chemistry, University of Illinois Urbana-Champaign 600 S Mathews Ave. Urbana IL 61801 USA
| | - Elizabeth Gao
- U.S. Army Corps of Engineers, ERDC Construction and Engineering Research Laboratory (CERL) Champaign IL 61822 USA
| | - Huimin Zhao
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Joaquín Rodríguez-López
- Department of Chemistry, University of Illinois Urbana-Champaign 600 S Mathews Ave. Urbana IL 61801 USA
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29
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Liu M, Ye Y, Xu L, Gao T, Zhong A, Song Z. Recent Advances in Nanoscale Zero-Valent Iron (nZVI)-Based Advanced Oxidation Processes (AOPs): Applications, Mechanisms, and Future Prospects. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2830. [PMID: 37947676 PMCID: PMC10647831 DOI: 10.3390/nano13212830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 11/12/2023]
Abstract
The fast rise of organic pollution has posed severe health risks to human beings and toxic issues to ecosystems. Proper disposal toward these organic contaminants is significant to maintain a green and sustainable development. Among various techniques for environmental remediation, advanced oxidation processes (AOPs) can non-selectively oxidize and mineralize organic contaminants into CO2, H2O, and inorganic salts using free radicals that are generated from the activation of oxidants, such as persulfate, H2O2, O2, peracetic acid, periodate, percarbonate, etc., while the activation of oxidants using catalysts via Fenton-type reactions is crucial for the production of reactive oxygen species (ROS), i.e., •OH, •SO4-, •O2-, •O3CCH3, •O2CCH3, •IO3, •CO3-, and 1O2. Nanoscale zero-valent iron (nZVI), with a core of Fe0 that performs a sustained activation effect in AOPs by gradually releasing ferrous ions, has been demonstrated as a cost-effective, high reactivity, easy recovery, easy recycling, and environmentally friendly heterogeneous catalyst of AOPs. The combination of nZVI and AOPs, providing an appropriate way for the complete degradation of organic pollutants via indiscriminate oxidation of ROS, is emerging as an important technique for environmental remediation and has received considerable attention in the last decade. The following review comprises a short survey of the most recent reports in the applications of nZVI participating AOPs, their mechanisms, and future prospects. It contains six sections, an introduction into the theme, applications of persulfate, hydrogen peroxide, oxygen, and other oxidants-based AOPs catalyzed with nZVI, and conclusions about the reported research with perspectives for future developments. Elucidation of the applications and mechanisms of nZVI-based AOPs with various oxidants may not only pave the way to more affordable AOP protocols, but may also promote exploration and fabrication of more effective and sustainable nZVI materials applicable in practical applications.
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Affiliation(s)
- Mingyue Liu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
- Engineering Research Center of Recycling & Comprehensive Utilization of Pharmaceutical and Chemical Waste of Zhejiang Province, Taizhou University, Taizhou 318000, China
| | - Yuyuan Ye
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
| | - Linli Xu
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
| | - Ting Gao
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
| | - Aiguo Zhong
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
| | - Zhenjun Song
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China
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Liu S, Qu H, Mao Y, Yao L, Dong B, Zheng L. Ce(IV)-coordinated organogel-based assay for on-site monitoring of propyl gallate with turn-on fluorescence signal. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:132001. [PMID: 37429188 DOI: 10.1016/j.jhazmat.2023.132001] [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: 04/21/2023] [Revised: 06/27/2023] [Accepted: 07/04/2023] [Indexed: 07/12/2023]
Abstract
Propyl gallate (PG) is a commonly used synthetic phenolic antioxidant in foodstuffs and industrial products. Due to the potential health risk of PG, rapid and on-site detection in food and environment samples are important to guarantee human health. Herein, we demonstrated rapid monitoring of PG by a fluorescence turn-on strategy based on a specific fluorogenic reaction between PG and polyethyleneimine (PEI). Specifically, Ce4+ with oxidase-mimicking activity oxidized PG to its oxides, which then reacted with PEI through the Michael addition to generate the fluorescent compound. The proposed fluorogenic reaction had good specificity for PG, which could distinguish PG from other phenolic antioxidants and interferences. Furthermore, portable and low-cost organogel test kits were prepared using poly(ethylene glycol) diacrylate for quantitative and on-site detection of PG via a smartphone-based sensing platform. The organogel-based assay detection limit was 1.0 μg mL-1 with recoveries ranging from 80.2% to 106.2% in edible oils and surface water. Suitability of the developed assay was also validated by high-performance liquid chromatography. Our study provides an effective fluorescent approach to rapid, specific, and convenient monitoring of PG, which is useful for diminishing the risk of PG exposure.
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Affiliation(s)
- Shuai Liu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Hao Qu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
| | - Yu Mao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China
| | - Lili Yao
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Baolei Dong
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China.
| | - Lei Zheng
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China; Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China.
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Jangra R, Ahlawat K, Dixit A, Prakash R. Efficient deactivation of aerosolized pathogens using a dielectric barrier discharge based cold-plasma detergent in environment device for good indoor air quality. Sci Rep 2023; 13:10295. [PMID: 37357240 DOI: 10.1038/s41598-023-37014-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 06/14/2023] [Indexed: 06/27/2023] Open
Abstract
Air pollution is one of the top 5 risks causing chronic diseases according to WHO and airborne transmitted pathogens infection is a huge challenge in the current era. Long living pathogens and small size aerosols are not effectively dealt with by the available indoor air purifiers. In this work, a dielectric barrier discharge (DBD) based portable cold-plasma detergent in environment device is reported and its disinfection efficiency has been analyzed in the indoor environment of sizes up to 3 × 2.4 × 2.4 m3. The deactivation efficiency of total microbial counts (TMCs) and total fungal counts (TFCs) is found to be more than 99% in 90 min of continuous operation of the device at the optimized parameters. The complete inactivation of MS2 phage and Escherichia coli bacteria with more than 5 log reduction (99.999%) has also been achieved in 30 min and 90 min of operation of the device in an enclosed environment. The device is able to produce negative ions predominantly dominated by natural plasma detergent along with positive ions in the environment similar to mother nature. The device comprises a coaxial DBD geometry plasma source with a specially designed wire mesh electrode of mild steel with a thickness of 1 mm. The need for feed gas, pellets and/or differential pressure has been eliminated from the DBD discharge source for efficient air purification. The existence of negative ions for more than 25 s on average is the key advantage, which can also deactivate long living pathogens and small size aerosols.
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Affiliation(s)
- Ramavtar Jangra
- Department of Physics, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India
| | - Kiran Ahlawat
- Department of Physics, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India
| | - Ambesh Dixit
- Department of Physics, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India
| | - Ram Prakash
- Department of Physics, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India.
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Pang Y, Ma Z, Song Q, Wang Z, Shi YE. Sensitive detection of butyrylcholinesterase activity based on a stimuli-responsive fluorescence reaction. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 299:122886. [PMID: 37210854 DOI: 10.1016/j.saa.2023.122886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/06/2023] [Accepted: 05/12/2023] [Indexed: 05/23/2023]
Abstract
A fluorogenic reaction between the chelate of Mn(II)-citric acid and terephthalic acid (PTA) was discovered, which was carried out through heating the aqueous mixture of Mn2+, citric acid and PTA. Detailed investigations indicated the reaction products were 2-hydroxyterephthalic acid (PTA-OH), which was attributed to the reaction between PTA and OH, formed by the triggering of Mn(II)-citric acid in the presence of dissolved O2. PTA-OH showed a strong blue fluorescence, peaked at 420 nm, and the fluorescence intensity presented a sensitive response to pH of the reaction system. Based on these mechanisms, the fluorogenic reaction was used for the detection of butyrylcholinesterase activity, achieving a detection limit of 0.15 U/L. The detection strategy was successfully applied in human serum samples, and it was also extended for the detection of organophosphorus pesticides and radical scavengers. Such a facile fluorogenic reaction and its stimuli-responsive properties offered an effective tool for designing detection pathways in the fields of clinical diagnosis, environmental monitoring and bioimaging.
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Affiliation(s)
- Yuexin Pang
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Zerui Ma
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Qian Song
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China
| | - Zhenguang Wang
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China.
| | - Yu-E Shi
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry and Materials Science, Hebei University, Baoding 071002, China.
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Clark V, Pellitero MA, Arroyo-Currás N. Explaining the Decay of Nucleic Acid-Based Sensors under Continuous Voltammetric Interrogation. Anal Chem 2023; 95:4974-4983. [PMID: 36881708 PMCID: PMC10035425 DOI: 10.1021/acs.analchem.2c05158] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 02/23/2023] [Indexed: 03/09/2023]
Abstract
Nucleic acid-based electrochemical sensors (NBEs) can support continuous and highly selective molecular monitoring in biological fluids, both in vitro and in vivo, via affinity-based interactions. Such interactions afford a sensing versatility that is not supported by strategies that depend on target-specific reactivity. Thus, NBEs have significantly expanded the scope of molecules that can be monitored continuously in biological systems. However, the technology is limited by the lability of the thiol-based monolayers employed for sensor fabrication. Seeking to understand the main drivers of monolayer degradation, we studied four possible mechanisms of NBE decay: (i) passive desorption of monolayer elements in undisturbed sensors, (ii) voltage-induced desorption under continuous voltammetric interrogation, (iii) competitive displacement by thiolated molecules naturally present in biofluids like serum, and (iv) protein binding. Our results indicate that voltage-induced desorption of monolayer elements is the main mechanism by which NBEs decay in phosphate-buffered saline. This degradation can be overcome by using a voltage window contained between -0.2 and 0.2 V vs Ag|AgCl, reported for the first time in this work, where electrochemical oxygen reduction and surface gold oxidation cannot occur. This result underscores the need for chemically stable redox reporters with more positive reduction potentials than the benchmark methylene blue and the ability to cycle thousands of times between redox states to support continuous sensing for long periods. Additionally, in biofluids, the rate of sensor decay is further accelerated by the presence of thiolated small molecules like cysteine and glutathione, which can competitively displace monolayer elements even in the absence of voltage-induced damage. We hope that this work will serve as a framework to inspire future development of novel sensor interfaces aiming to eliminate the mechanisms of signal decay in NBEs.
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Affiliation(s)
- Vincent Clark
- Chemistry-Biology
Interface Program, Zanvyl Krieger School of Arts & Sciences, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Miguel Aller Pellitero
- Departamento
de Química Física y Analítica, Universidad de Oviedo, Av. Julián Clavería 8, Oviedo 33006, Spain
- Instituto
de Investigación Sanitaria Del Principado de Asturias, Avenida de Roma, Oviedo 33011, Spain
- Department
of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Netzahualcóyotl Arroyo-Currás
- Chemistry-Biology
Interface Program, Zanvyl Krieger School of Arts & Sciences, Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department
of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
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Aryldiazonium reduction mechanism deciphered by scanning electrochemical microscopy through an EC’ process. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Non-Conventional Synthesis and Repetitive Application of Magnetic Visible Light Photocatalyst Powder Consisting of Bi-Layered C-Doped TiO2 and Ni Particles. Catalysts 2023. [DOI: 10.3390/catal13010169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
In the current study, a non-conventional application of the magnetron sputtering technique was proposed. A four-step synthesis procedure allowed us to produce a magnetic photocatalyst powder consisting of bi-layered particles with carbon-doped TiO2 on one side, and metallic Ni on the other side. XRD, SEM and EDS methods were used for sample characterization. It was determined, that after the sputtering process optimization, the bandgap of carbon-doped TiO2 was reduced to approximately 3.1 eV and its light adsorption increased over the whole visible light spectrum. The repetitive Rhodamine B solution bleaching with magnetic photocatalyst powder and visible light showed interesting evolvement of photocatalyst efficiency. After the first cycle, Rhodamine B concentration was reduced by just 35%. However, after the second cycle, the reduction had already reached nearly 50%. Photocatalytic bleaching efficiency continued to improve rapidly until higher than 95% of Rhodamine B concentration reduction was achieved (at tenth cycle). For the next ten cycles, photocatalytic bleaching efficiency remained relatively stable. The initial gain in efficiency was attributed to the magnetic photocatalyst particle size reduction from an initial diameter of 100–150 µm to 5 µm. Naturally, the 20–30 times size reduction resulted in a remarkably increased active surface area, which was a key factor for the increased performance.
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