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Celesti C, Giofrè SV, Espro C, Legnani L, Neri G, Iannazzo D. Modified Gold Screen-Printed Electrodes for the Determination of Heavy Metals. SENSORS (BASEL, SWITZERLAND) 2024; 24:4935. [PMID: 39123983 DOI: 10.3390/s24154935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2024] [Revised: 07/28/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024]
Abstract
Screen-printed electrodes (SPEs) are reliable, portable, affordable, and versatile electrochemical platforms for the real-time analytical monitoring of emerging analytes in the environmental, clinical, and agricultural fields. The aim of this study was to evaluate the electrochemical behavior of gold screen-printed electrodes (SPGEs) modified with molecules containing amino (Tr-N) or α-aminophosphonate (Tr-P) groups for the selective and sensitive detection of the toxic metal ions Pb2+ and Hg2+ in aqueous samples. After optimizing the analytical parameters (conditioning potential and time, deposition potential and time, pH and concentration of the supporting electrolyte), anodic square wave stripping voltammetry (SWASV) was used to evaluate and compare the electrochemical performance of bare or modified electrodes for the detection of Hg2+ and Pb2+, either alone or in their mixtures in the concentration range between 1 nM and 10 nM. A significative improvement in the detection ability of Pb2+ ions was recorded for the amino-functionalized gold sensor SPGE-N, while the presence of a phosphonate moiety in SPGE-P led to greater sensitivity towards Hg2+ ions. The developed sensors allow the detection of Pb2+ and Hg2+ with a limit of detection (LOD) of 0.41 nM and 35 pM, respectively, below the legal limits for these heavy metal ions in drinking water or food, while the sensitivity was 5.84 µA nM-1cm-2 and 10 µA nM-1cm-2, respectively, for Pb2+ and Hg2+. The reported results are promising for the development of advanced devices for the in situ and cost-effective monitoring of heavy metals, even in trace amounts, in water resources.
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Affiliation(s)
- Consuelo Celesti
- Department of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, Italy
| | - Salvatore Vincenzo Giofrè
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno D'Alcontres 31, 98166 Messina, Italy
| | - Claudia Espro
- Department of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, Italy
| | - Laura Legnani
- Department of Biotechnology and Biosciences, University of Milano Bicocca, Piazza della Scienza 2, 20126 Milano, Italy
| | - Giovanni Neri
- Department of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, Italy
| | - Daniela Iannazzo
- Department of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, Italy
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Liu YZ, Cai X, Huang CC, Liu ZH, Yang YF, Li YY, Yang M, Chen SH, Huang XJ. Transforming crystal structures of cobalt molybdate to generate electron-rich sites for electrochemical detection of Pb(II). Anal Chim Acta 2024; 1314:342801. [PMID: 38876517 DOI: 10.1016/j.aca.2024.342801] [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: 04/18/2024] [Revised: 05/21/2024] [Accepted: 05/29/2024] [Indexed: 06/16/2024]
Abstract
BACKGROUND Most of the investigations on distinct crystal structures of catalysts are individually focused on the difference of surface functional groups or adsorption properties, but rarely explore the changes of active sites to affect the electrocatalytic performance. Catalysts with diverse crystal structures had been applied to modified electrodes in different electrocatalytic reactions. However, there is currently a lack of an essential understanding for the role of real active sites in catalysts with crystalline structures in electroanalysis, which is crucial for designing highly sensitive sensing interfaces. RESULTS Herein, cobalt molybdate with divergent crystal structures (α-CoMoO4 and β-CoMoO4) were synthesized by adjusting the calcination temperature, indicating that α-CoMoO4 (800 °C) (60.00 μA μM-1) had the highest catalytic ability than β-CoMoO4 (700 °C) (38.68 μA μM-1) and α-CoMoO4 (900 °C) (29.55 μA μM-1) for the catalysis of Pb(II). It was proved that the proportion of Co(II) and Mo(IV) as electron-rich sites in α-CoMoO4 (800 °C) were higher than β-CoMoO4 (700 °C) and α-CoMoO4 (900 °C), possessing more electrons to participate in the valence cycles of Co(II)/Co(III) and Mo(IV)/Mo(VI) to boost the catalytic reduction of Pb(II). Specifically, Co(II) transferred a part of electrons to Mo(VI), promoting the formation of Mo(IV). Co(II) and Mo(IV), as the electron-rich sites, providing electrons to Pb(II), further accelerating the conversion of Pb(II) into Pb(0). SIGNIFICANCE In the process of detecting Pb(II), the CoMoO4 structures under different temperatures have distinct content of electron-rich sites Co(II) and Mo(IV). α-CoMoO4 (800 °C), with the highest content are benefited to detect Pb(II). This work is conducive to understanding the effect of the changes of active sites resulting from crystal transformation on the electrocatalytic performance, and provides a way to construct sensitive electrochemical interfaces of distinct active sites.
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Affiliation(s)
- Yang-Zhi Liu
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China; State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Xin Cai
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Cong-Cong Huang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Zi-Hao Liu
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Yuan-Fan Yang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China
| | - Yong-Yu Li
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China.
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China; State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China.
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, 230026, China; State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China.
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Torrarit K, Cotchim S, Phonchai A, Chaisiwamongkhol K, Limbut W. Voltammetric co-determination of lead and copper in gunshot residue based on iron oxide particle/spent coffee grounds-modified electrode. Mikrochim Acta 2024; 191:417. [PMID: 38913195 DOI: 10.1007/s00604-024-06481-3] [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: 03/07/2024] [Accepted: 06/01/2024] [Indexed: 06/25/2024]
Abstract
A novel electrochemical sensor was developed for the detection of lead (Pb) and copper (Cu) ions using spent coffee grounds decorated with iron oxide particles (FeO/SCG). The FeO-decorated SCG was used to modify a glassy carbon electrode (GCE). FeO, SCG, and FeO/SCG were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The electrochemical properties of the modified electrode were characterized by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The electrode modifications increased the active surface area and electron transfer and enhanced the accumulation of the target analyte. In the optimal condition, the developed sensor showed linear ranges of 1.0 µg L-1-0.05 mg L-1 and 0.05 mg L-1-0.8 mg L-1 for Pb2+ and 5.0 µg L-1-0.1 mg L-1 and 0.1 mg L-1-0.8 mg L-1 for Cu2+. The limit of detection (LOD) was 1.0 µg L-1 for Pb2+ and 2.4 µg L-1 for Cu2+. The developed sensor was successfully applied to determine Pb2+ and Cu2+ in bullet holes. The results were in good agreement with those obtained by inductively coupled plasma optical emission spectrometry (ICP/OES).
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Affiliation(s)
- Kamonchanok Torrarit
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Suparat Cotchim
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
- Division of Physical Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Apichai Phonchai
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Korbua Chaisiwamongkhol
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Warakorn Limbut
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
- Forensic Science Innovation and Service Center, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
- Center of Excellence for Trace Analysis and Biosensor, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
- Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
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Jjagwe J, Olupot PW, Kulabako R, Carrara S. Electrochemical sensors modified with iron oxide nanoparticles/nanocomposites for voltammetric detection of Pb (II) in water: A review. Heliyon 2024; 10:e29743. [PMID: 38665564 PMCID: PMC11044046 DOI: 10.1016/j.heliyon.2024.e29743] [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: 01/09/2024] [Revised: 04/15/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Permissible limits of Pb2+ in drinking water are being reduced from 10 μgL-1 to 5 μgL-1, which calls for rapid, and highly reliable detection techniques. Electrochemical sensors have garnered attention in detection of heavy metal ions in environmental samples due to their ease of operation, low cost, and rapid detection responses. Selectivity, sensitivity and detection capabilities of these sensors, can be enhanced by modifying their working electrodes (WEs) with iron oxide nanoparticles (IONPs) and/or their composites. Therefore, this review is an in-depth analysis of the deployment of IONPs/nanocomposites in modification of electrochemical sensors for detection of Pb2+ in drinking water over the past decade. From the analyzed studies (n = 23), the optimal solution pH, deposition potential, and deposition time ranged between 3 and 5.6, -0.7 to -1.4 V vs Ag/AgCl, and 100-400 s, respectively. Majority of the studies employed square wave anodic stripping voltammetry (n = 16), in 0.1 M acetate buffer solution (n = 19) for detection of Pb2+. Limits of detection obtained (2.5 x 10-9 - 4.5 μg/L) were below the permissible levels which indicated good sensitivities of the modified electrodes. Despite the great performance of these modified electrodes, the primary source of IONPs has always been commercial iron-based salts in addition to the use of so many materials as modifying agents of these IONPs. This may limit reproducibility and sustainability of the WEs due to lengthy and costly preparation protocols. Steel and/or iron industrial wastes can be alternatively employed in generation of IONPs for modification of electrochemical sensors. Additionally, biomass-based activated carbons enriched with surface functional groups are also used in modification of bare IONPs, and subsequently bare electrodes. However, these two areas still need to be fully explored.
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Affiliation(s)
- Joseph Jjagwe
- Department of Mechanical Engineering, College of Engineering, Design, Art and Technology, Makerere University, P.O. Box 7062, Kampala, Uganda
| | - Peter Wilberforce Olupot
- Department of Mechanical Engineering, College of Engineering, Design, Art and Technology, Makerere University, P.O. Box 7062, Kampala, Uganda
| | - Robinah Kulabako
- Department of Civil and Environmental Engineering, College of Engineering, Design, Art and Technology, Makerere University, P.O. Box 7062, Kampala, Uganda
| | - Sandro Carrara
- Bio/CMOS Interfaces Laboratory, School of Engineering, Institute of Microengineering, École Polytechnique Fédérale de Lausanne (EPFL), Neuchâtel, Switzerland
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Liu J, Zhao J, Du J, Peng S, Wu J, Zhang W, Yan X, Lin Z. Predicting the binding configuration and release potential of heavy metals on iron (oxyhydr)oxides: A machine learning study on EXAFS. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133797. [PMID: 38377906 DOI: 10.1016/j.jhazmat.2024.133797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 02/09/2024] [Accepted: 02/13/2024] [Indexed: 02/22/2024]
Abstract
Heavy metals raise a global concern and can be easily retained by ubiquitous iron (oxyhydr)oxides in natural and engineered systems. The complex interaction between iron (oxyhydr)oxides and heavy metals results in various mineral-metal binding configurations, such as outer-sphere complexes and edge-sharing inner-sphere complexes, which determine the accumulation and release of heavy metals in the environment. However, traditional experimental approaches are time-consuming and inadequate to elucidate the complex binding relationships and configurations between iron (oxyhydr)oxides and heavy metals. Herein, a workflow that integrates the binding configuration data of 11 heavy metals on 7 iron (oxyhydr)oxides and then trains machine learning models to predict unknown binding configurations was proposed. The well-trained multi-grained cascade forest models exhibited high accuracy (> 90%) and predictive performance (R2 ∼ 0.75). The underlying effects of mineral properties, metal ion species, and environmental conditions on mineral-metal binding configurations were fully interpreted with data mining. Moreover, the metal release rate was further successfully predicted based on mineral-metal binding configurations. This work provides a method to accurately and quickly predict the binding configuration of heavy metals on iron (oxyhydr)oxides, which would provide guidance for estimating the potential release behavior of heavy metals and remediating heavy metal pollution in natural and engineered environments.
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Affiliation(s)
- Junqin Liu
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Jiang Zhao
- School of Mathmatics and Statistics, Beijing Technology and Business University, Beijing 100048, China
| | - Jiapan Du
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Suyi Peng
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Jiahui Wu
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China
| | - Wenchao Zhang
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, Hunan 410083, China
| | - Xu Yan
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, Hunan 410083, China.
| | - Zhang Lin
- School of Metallurgy and Environment, Central South University, Changsha, Hunan 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha, Hunan 410083, China
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6
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Zhao YH, Xia RZ, Liang B, Gao ZW, Song ZY, Yang M, Chen SH, Li PH, Xiao X, Huang XJ. Highly Accurate Determination of the Total Amount of Pb 2+ and Pb(OH) + in a Natural Water Environment Revealed by Dynamic Simulation and DFT Calculation: Benefit from the Electron Inverse Effect of Pt Nanoclusters over Defective g-C 3N 4. Anal Chem 2024; 96:5232-5241. [PMID: 38447030 DOI: 10.1021/acs.analchem.3c05707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Although utilizing nanomaterial-modified electrodes for lead ion detection has achieved great success, most of them are carried out under acidic conditions and ignore the variation of Pb(II) speciation at different pH conditions, leading to the potential inaccuracy of Pb(II) detection in a neutral natural water environment. Thus, designing a novel catalyst with high accuracy for the detection of various forms of the total amount of Pb(II) (Pb2+ and Pb(OH)+) in neutral waters is significant. Herein, Pt nanoclusters (Pt NCs) were elaborately constructed and stabilized on the Co single-atom-doped g-C3N4 with abundant N vacancies (Pt NCs/VN-C3N4), which achieved the ultrasensitive detection (102.16 μM μA-1) of Pb(II) in neutral conditions. The dynamic simulation and theoretical calculations reveal that the parallel deposition of Pb2+ and Pb(OH)+ occurs on the electrode surface modified by Pt NCs/VN-C3N4, and the current peaks of Pb(II) are cocontributed by Pb2+ and Pb(OH)+ species. An "electron inverse" phenomenon in Pt NCs/VN-C3N4 from the VN-C3N4 substrate to Pt NCs endows Pt NCs in an electron-rich state, serving as active centers to promote rapid and efficient reduction for both Pb2+ and Pb(OH)+, facilitating the accurate detection of the total amount of Pb(II) in all forms in the actual water environment.
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Affiliation(s)
- Yong-Huan Zhao
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
- Institute of Environmental Hefei Comprehensive National Science Center, Hefei 230088, P. R. China
| | - Rui-Ze Xia
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Bo Liang
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Zhi-Wei Gao
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- Institute of Environmental Hefei Comprehensive National Science Center, Hefei 230088, P. R. China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Xiangyu Xiao
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Xing-Jiu Huang
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
- Institute of Environmental Hefei Comprehensive National Science Center, Hefei 230088, P. R. China
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7
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Wang T, Fan Z, Xue W, Yang H, Li RW, Xu X. Controlled Growth and Size-Dependent Magnetic Domain States of 2D γ-Fe 2O 3. NANO LETTERS 2023; 23:10498-10504. [PMID: 37939014 DOI: 10.1021/acs.nanolett.3c03276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Nonlayered two-dimensional (2D) magnets have attracted special attention, as many of them possess magnetic order above room temperature and enhanced chemical stability compared to most existing vdW magnets, which offers remarkable opportunities for developing compact spintronic devices. However, the growth of these materials is quite challenging due to the inherent three-dimensionally bonded nature, which hampers the study of their magnetism. Here, we demonstrate the controllable growth of air-stable pure γ-Fe2O3 nanoflakes by a confined-vdW epitaxial approach. The lateral size of the nanoflakes could be adjusted from hundreds of nanometers to tens of micrometers by precisely controlling the annealing time. Interestingly, a lateral-size-dependent magnetic domain configuration was observed. As the sizes continuously increase, the magnetic domain evolves from single domain to vortex and finally to multidomain. This work provides guidance for the controllable synthesis of 2D inverse spinel-type crystals and expands the range of magnetic vortex materials into magnetic semiconductors.
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Affiliation(s)
- Tao Wang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan 030031, People's Republic of China
| | - Zhiwei Fan
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan 030031, People's Republic of China
| | - Wuhong Xue
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan 030031, People's Republic of China
| | - Huali Yang
- CAS Key Laboratory of Magnetic Materials and Devices & Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Run-Wei Li
- CAS Key Laboratory of Magnetic Materials and Devices & Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Xiaohong Xu
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, Taiyuan 030031, People's Republic of China
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8
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Zarei H, Sobhani S, Sansano JM. First Reusable Catalyst for the Reductive Coupling Reaction of Organohalides with Aldehydes. ACS OMEGA 2023; 8:36801-36814. [PMID: 37841197 PMCID: PMC10568700 DOI: 10.1021/acsomega.3c03414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 09/18/2023] [Indexed: 10/17/2023]
Abstract
In this study, we simulate the reductive coupling (Barbier-Grignard-type) reaction of organohalides with aldehydes using a new reusable catalyst. In this regard, bimetallic alloys of NiCo encapsulated in melamine-based dendrimers (MBD) immobilized on magnetic nanoparticles symbolized as γ-Fe2O3-MBD/NiCo were designed and synthesized. The structure and properties of the catalyst were studied by a variety of techniques such as Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), vibrating sample magnetometry (VSM), energy-dispersive spectrometry (EDS) mapping, and inductively coupled plasma (ICP). The presence of NiCo nanoalloys was confirmed by XRD and XPS analysis, TEM images, and EDS mapping. Various secondary alcohols were produced in good to high yields by reductive coupling of different types of aldehydes and organohalides in the presence of HCO2K as a nonmetallic reducing agent in aqueous media catalyzed by γ-Fe2O3-MBD/NiCo. In these reactions, the high catalytic performance of γ-Fe2O3-MBD/NiCo was achieved in comparison to monometallic counterparts due to the synergistic cooperative effect of Co and Ni in the NiCo nanoalloys. Magnetic and hydrophilic properties of the catalyst facilitate the catalyst recyclability for seven runs. The reusability of γ-Fe2O3-MBD/NiCo, use of water as an environmentally friendly solvent, ease of processing, and absence of metal additives make this process an excellent choice for the reductive coupling reaction to produce secondary alcohols from aldehydes. This is the first report on these kinds of reactions using a reusable catalyst.
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Affiliation(s)
- Hamed Zarei
- Department
of Chemistry, College of Sciences, University
of Birjand, Birjand 414, Iran
| | - Sara Sobhani
- Department
of Chemistry, College of Sciences, University
of Birjand, Birjand 414, Iran
| | - José Miguel Sansano
- Departamento
de Química Orgánica, Facultad de Ciencias, Centro de
Innovación en Química Avanzada (ORFEOCINQA) and Instituto
de Síntesis Orgánica (ISO), Universidad de Alicante, Apdo. 99, 03080 Alicante, Spain
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9
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Xia RZ, Cai X, Liang B, Dai HH, Liu YZ, Yang M, Chen SH, Li PH, Huang XJ. Bimodal interferences of Pb(II) induced by parallel deposition in Pb(II)-Cu(II) electrochemical detections: Voltammetric signals analysis combined with numerical simulations on transient interfacial phenomena. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132104. [PMID: 37490798 DOI: 10.1016/j.jhazmat.2023.132104] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/27/2023]
Abstract
The perplexity of double peaks in Pb(II) detections has been a threat to the reliability of Pb(II) electroanalysis results for a long term. For the complexity of electrode interfaces, rare studies were taken on mechanisms of Pb(II) double peaks through interfacial kinetics. In this work, analyses on experimental signals and interfacial simulations were working together to reveal that the generation of Pb(II) double peaks in Pb(II)-Cu(II) systems is the deposition of Pb(II) on Cu deposits occurring in parallel. By applying anode stripping voltammetry and cyclic voltammetry, a parallel deposition reaction was found to influence the shape of Pb(II) peaks, and the existence of the second peak was controlled through the adjustment of experimental conditions. A kinetic model was built to reveal the interference of electroanalysis signals caused by a parallel deposition reaction and simulations based on the model were combined with experiments to illustrate that double peaks of Pb(II) were caused by the parallel deposition on Cu(II) deposits. This work proposes another insight of Pb(II) double peaks from macroscale kinetics and pays more attention on the dynamic procedure of electroanalysis interfaces, which makes the study on environmental electroanalysis interface phenomena more clear and is enlightening to develop efficient electrical methods for pollutant monitoring.
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Affiliation(s)
- Rui-Ze Xia
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Xin Cai
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Bo Liang
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Hai-Hua Dai
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Yang-Zhi Liu
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Meng Yang
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.
| | - Shi-Hua Chen
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.
| | - Pei-Hua Li
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.
| | - Xing-Jiu Huang
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China.
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10
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Gao J, He D, Zhang J, Sun B, Wang G, Suo H, Zhang L, Zhao C. In-situ growth of porous rod-like tungsten oxide for electrochemical determination of cupric ion. Anal Chim Acta 2023; 1276:341645. [PMID: 37573124 DOI: 10.1016/j.aca.2023.341645] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/03/2023] [Accepted: 07/20/2023] [Indexed: 08/14/2023]
Abstract
Preconcentration can effectively enhance the detection performance of electrodes in the electrochemical detection of heavy metal ions, but it also presents challenges for real-time monitoring. Several attempts have been made to optimize preconcentration by improving the adsorption capacity or detection mechanism of the electrode. The valence transfer of tungsten oxide between W5+/W6+ can participate in the reduction between the electrode material and heavy metal ions, playing a role in preconcentration to some extent. Therefore, we developed a WO3/SSM electrochemical sensor for the detection of Cu(II) that utilizes the valence variation property of WO3. The crystallinity and microstructure of the WO3/SSM electrode can be regulated by controlling the deposition parameters, and we prepared three types of WO3/SSM with different morphologies to identify the influence of the electrochemical effective surface area. The proposed electrode shows high performance as a Cu(II) sensor under short preconcentration time (60 s), with an excellent sensitivity of 14.113 μA μM-1 cm-2 for 0.1-10.0 μM and 4.7356 μA μM-1 cm-2 for 10.0-20.0 μM. Overall, the combined effect of morphology and valence transfers shortens the preconcentration time and optimizes preconcentration while ensuring excellent electrode performance. This WO3/SSM electrode is expected to drive great advances in the application of tungsten oxide in the electrochemical detection of heavy metal ions.
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Affiliation(s)
- Jie Gao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130000, PR China
| | - Dong He
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130000, PR China
| | - Jingwen Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130000, PR China
| | - Bangning Sun
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130000, PR China
| | - Guanda Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130000, PR China
| | - Hui Suo
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130000, PR China
| | - Liang Zhang
- College of Chemistry and Materials Engineering, Bohai University, Jinzhou, 121013, PR China
| | - Chun Zhao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130000, PR China.
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11
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You J, Li J, Wang Z, Baghayeri M, Zhang H. Application of Co 3O 4 nanocrystal/rGO for simultaneous electrochemical detection of cadmium and lead in environmental waters. CHEMOSPHERE 2023:139133. [PMID: 37290509 DOI: 10.1016/j.chemosphere.2023.139133] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/13/2023] [Accepted: 06/03/2023] [Indexed: 06/10/2023]
Abstract
Sensing of cadmium (Cd) and lead (Pb) in environmental samples is crucial for identifying potential health risks associated with exposure to these heavy metals as well as understanding the extent of heavy metal contamination in different environments and its impact on the ecosystem. The present study elucidates the development of a novel electrochemical sensor that can detect Cd (II) and Pb (II) ions simultaneously. This sensor is fabricated using reduced graphene oxide (rGO) and cobalt oxide nanocrystals (Co3O4 nanocrystals/rGO). The characterization of Co3O4 nanocrystals/rGO was done by using various analytical techniques. The incorporation of cobalt oxide nanocrystals with intense absorption properties results in an amplification of the electrochemical current generated on the surface of the sensor by heavy metals. This, when coupled with the unique properties of the GO layer, enables the identification of trace levels of Cd (II) and Pb (II) in the surrounding environment. The electrochemical testing parameters were meticulously optimized to obtain high sensitivity and selectivity. The Co3O4 nanocrystals/rGO sensor exhibited exceptional performance in detecting Cd (II) and Pb (II) within a concentration range of 0.1-450 ppb. Notably, the limits of detection (LOD) for Pb (II) and Cd (II) were found to be highly impressive at 0.034 ppb and 0.062 ppb, respectively. The Co3O4 nanocrystals/rGO sensor integrated with the SWASV method displayed notable resistance to interference and exhibited consistent reproducibility and stability. Therefore, the suggested sensor has the potential to serve as a technique for detecting both ions in aqueous samples using SWASV analysis.
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Affiliation(s)
- Junhua You
- School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, 110870, China.
| | - Jingjing Li
- School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, 110870, China
| | - Zhiwei Wang
- School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, 110870, China
| | - Mehdi Baghayeri
- Department of Chemistry, Faculty of Science, Hakim Sabzevari University, PO. Box 397, Sabzevar, Iran.
| | - Hangzhou Zhang
- Department of Orthopedics, Joint Surgery and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, 110001, China.
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12
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Gurusamy L, Karuppasamy L, Anandan S, Barton SC, Chuang YH, Liu CH, Wu JJ. Review of oxygen-vacancies nanomaterials for non-enzymatic electrochemical sensors application. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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13
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Gu B, Du Y, Fang S, Chen X, Li X, Xu Q, Lu H. Fabrication of UV-Stable Perovskite Solar Cells with Compact Fe 2O 3 Electron Transport Layer by FeCl 3 Solution and Fe 3O 4 Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4415. [PMID: 36558268 PMCID: PMC9781711 DOI: 10.3390/nano12244415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/08/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Even though Fe2O3 is reported as the electron-transporting layer (ETL) in perovskite solar cells (PSCs), its fabrication and defects limit its performance. Herein, we report a Fe2O3 ETL prepared from FeCl3 solution with a dopant Fe3O4 nanoparticle modification. It is found that the mixed solution can reduce the defects and enhance the performance of Fe2O3 ETL, contributing to improved electron transfer and suppressed charge recombination. Consequently, the best efficiency is improved by more than 118% for the optimized device. The stability efficiency of the Fe2O3-ETL-based device is nearly 200% higher than that of the TiO2-ETL-based device after 7 days measurement under a 300 W Xe lamp. This work provides a facile method to fabricate environmentally friendly, high-quality Fe2O3 ETL for perovskite photovoltaic devices and provides a guide for defect passivation research.
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Affiliation(s)
- Bangkai Gu
- School of Physics, Southeast University, Nanjing 211189, China
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yi Du
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Song Fang
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xi Chen
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xiabing Li
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Qingyu Xu
- School of Physics, Southeast University, Nanjing 211189, China
| | - Hao Lu
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
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14
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Fe-doping induced surface Fe2+/Fe3+ cycle and activated redox-inert TiO2 for enhanced Hg(II) electrochemical sensing: An efficient strategy to strengthen the redox activity. Anal Chim Acta 2022; 1232:340472. [DOI: 10.1016/j.aca.2022.340472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 09/21/2022] [Accepted: 09/28/2022] [Indexed: 11/24/2022]
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15
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Xiao XY, Zhao YH, Li YY, Song ZY, Chen SH, Huang HQ, Yang M, Li PH, Huang XJ. General Strategies to Construct Highly Efficient Sensing Interfaces for Metal Ions Detection from the Perspective of Catalysis. Anal Chem 2022; 94:13631-13641. [PMID: 36150119 DOI: 10.1021/acs.analchem.2c01797] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Constructing high-effective electrode sensing interfaces has been considered an effective method for electrochemical detection toward heavy metal ions (HMIs). However, most research has been devoted to enhancing the stripping currents of HMIs by simply improving the adsorptive capacity and conductivity of the electrode modified materials, while lacking theoretical guidelines in fabricating catalytic sensing interfaces. Besides, the understanding of detection mechanisms is quite unscientific from the perspective of catalysis. This perspective summarizes five general strategies in designing highly efficient sensing interfaces in the recent five years, including modulating crystal phases, orientations and planes, defect engineering, ionic valence state cycle engineering, adsorption in situ catalysis strategy, and construction of atomic level catalytic active sites. What's more, the catalytic mechanisms for improving the signals of HMIs, such as boosting the electron transfer rates and conversion rates, lowering the energy barriers, etc., are introduced and emphasized. This study has a great significance in directionally controlling functionalized electrochemical sensors to achieve excellent sensitivity and selectivity in detecting environmental pollutants from the view of catalysis, and it also brings enlightenments and guidance to develop new electroanalytical methods.
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Affiliation(s)
- Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yong-Huan Zhao
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yong-Yu Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, P. R. China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hong-Qi Huang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
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16
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Yu HZ, Xu QQ, Cheng XL, Xue YQ, Ma HY, Ding XX, Liu Q, Li SS, Zhang YX. Hollow aluminosilicate microspheres with increased surface hydroxyl groups by etching method for electrochemical detection of Hg(II). Microchem J 2022. [DOI: 10.1016/j.microc.2022.107610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Copper tape to improve analytical performance of disposable carbon electrodes in stripping analysis. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107428] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Surface engineering of hematite nanorods photoanode towards optimized photoelectrochemical water splitting. J Colloid Interface Sci 2022; 626:879-888. [PMID: 35835039 DOI: 10.1016/j.jcis.2022.07.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/03/2022] [Accepted: 07/04/2022] [Indexed: 11/22/2022]
Abstract
Rapid charge recombination in hematite (Fe2O3) during photoelectrochemical water splitting is a major obstacle to achieving high-efficiency photoelectrodes. Surface defect engineering is considered as a viable strategy for enhancing photoelectrochemical activity of oxide photoanodes. Herein, a one-dimensional (1D) defective γ-Fe2O3 nanorods (DFNRs) photoanode is prepared using solvothermal and high-temperature hydrogenation strategies. The as-prepared DFNRs possess superior visible-light absorption capacity and exhibit excellent photoelectrochemical performance (0.98 mA cm-2), with approximately three-fold higher photocurrent density than that of pristine Fe2O3 (FNRs, 0.32 mA cm-2). The enhanced activity of the DFNRs results from the moderate formation of oxygen vacancy defects, which promotes spatial charge separation and transfer at the DFNRs/electrolyte interface, as well as the 1D nanorod structure, which favors rapid charge transfer. The surface of γ-Fe2O3 with hydroxyl (OH) groups provides sufficient surface-active sites. This result suggests that surface-oxygen deficiency of γ-Fe2O3 can not only expand the light absorption range but also facilitating photo-generated charge carriers separation. This surface engineering strategy provides an alternative method for preparing stable and highly active metal oxide photoanodes for photoelectrochemical water splitting.
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19
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Li G, Qi X, Zhang G, Wang S, Li K, Wu J, Wan X, Liu Y, Li Q. Low-cost Voltammetric Sensors for Robust Determination of Toxic Cd(II) and Pb(II) in Environment and Food Based on Shuttle-like α-Fe2O3 Nanoparticles Decorated β-Bi2O3 Microspheres. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107515] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Bai T, Ai J, Duan Y, Han L, Che S. Spin Selectivity of Chiral Mesostructured Iron Oxides with Different Magnetisms. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104509. [PMID: 35098648 DOI: 10.1002/smll.202104509] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 11/19/2021] [Indexed: 06/14/2023]
Abstract
Spin selectivity physically depends on either magnetic materials with strong internal magnetic fields or symmetry-breaking materials with large spin-orbit coupling (SOC). However, the spin selectivity of symmetry-breaking magnetic materials is not understood. Herein, the spin selectivity of iron oxides with different magnetisms arising from varying spin alignment is investigated. Chiral mesostructured films of Fe3 O4 (CMFFs), γ-Fe2 O3 (CMγFs), and α-Fe2 O3 (CMαFs), which share the same mesostructure, are prepared by a controllable calcination process of chiral mesostructured FeOOH films (CMOFs) grown on the substrate via an amino acid-induced hydrothermal route. CMFFs and CMγFs with ferrimagnetism exhibit magnetic field-dependent and simultaneously chirality-independent magnetic circular dichroism (MCD) signals, while CMαFs with antiferromagnetism exhibit chirality-dependent, magnetic field-independent MCD signals. It is speculated that the competitive effect between the spin alignment-induced and chirality-induced effective magnetic fields determines the energy splitting of opposite spins in the materials with different magnetisms.
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Affiliation(s)
- Te Bai
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Jing Ai
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Yingying Duan
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Lu Han
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
| | - Shunai Che
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China
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21
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Souza JC, Ribeiro RAP, G. da Trindade L, Oliveira RCD, D. Costa L, C. de Oliveira M, de Lazaro SR, Sambrano JR, Mendonça CR, de Boni L, L. Pontes FM, de Oliveira AJA, Leite ER, Longo E. Unconventional Disorder by Femtosecond Laser Irradiation in Fe 2O 3. ACS OMEGA 2021; 6:28049-28062. [PMID: 34723005 PMCID: PMC8552326 DOI: 10.1021/acsomega.1c04079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
This paper demonstrates that femtosecond laser-irradiated Fe2O3 materials containing a mixture of α-Fe2O3 and ε-Fe2O3 phases showed significant improvement in their photoelectrochemical performance and magnetic and optical properties. The absence of Raman-active vibrational modes in the irradiated samples and the changes in charge carrier emission observed in the photocurrent density results indicate an increase in the density of defects and distortions in the crystalline lattice when compared to the nonirradiated ones. The magnetization measurements at room temperature for the nonirradiated samples revealed a weak ferromagnetic behavior, whereas the irradiated samples exhibited a strong one. The optical properties showed a reduction in the band gap energy and a higher conductivity for the irradiated materials, causing a higher current density. Due to the high performance observed, it can be applied in dye-sensitized solar cells and water splitting processes. Quantum mechanical calculations based on density functional theory are in accordance with the experimental results, contributing to the elucidation of the changes caused by femtosecond laser irradiation at the molecular level, evaluating structural, energetic, and vibrational frequency parameters. The surface simulations enable the construction of a diagram that elucidates the changes in nanoparticle morphologies.
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Affiliation(s)
- Josiane C. Souza
- LIEC—CDMF—Department
of Chemistry, Federal University of São
Carlos, 13565-905 São Carlos, Brazil
| | - Renan A. P. Ribeiro
- Department
of Chemistry, State University of Minas
Gerais—UEMG, 35501-170 Divinópolis, Brazil
| | | | - Regiane C. de Oliveira
- Modeling
and Molecular Simulations Group, São
Paulo State University—UNESP, 17033-360 Bauru, Brazil
| | - Leonardo D. Costa
- Physics
Department, Federal University of São
Carlos, 13565-905 São Carlos, Brazil
| | - Marisa C. de Oliveira
- LIEC—CDMF—Department
of Chemistry, Federal University of São
Carlos, 13565-905 São Carlos, Brazil
| | - Sergio R. de Lazaro
- Department
of Chemistry, State University of Ponta
Grossa, 84030-900 Ponta Grossa, Brazil
| | - Julio R. Sambrano
- Modeling
and Molecular Simulations Group, São
Paulo State University—UNESP, 17033-360 Bauru, Brazil
| | - Cleber R. Mendonça
- Department
of Physics and Materials Science, Institute of Physics, University of São Paulo, 13566-590 São Carlos, Brazil
| | - Leonardo de Boni
- Department
of Physics and Materials Science, Institute of Physics, University of São Paulo, 13566-590 São Carlos, Brazil
| | - Fenelon M. L. Pontes
- Department
of Chemistry, São Paulo State University—UNESP, 17033-360 Bauru, Brazil
| | | | - Edson R. Leite
- LIEC—CDMF—Department
of Chemistry, Federal University of São
Carlos, 13565-905 São Carlos, Brazil
- Brazilian
Nanotechnology National Laboratory (LNNano) Brazilian Center for Research
in Energy and Materials (CNPEM), 13083-100 Campinas, Brazil
| | - Elson Longo
- LIEC—CDMF—Department
of Chemistry, Federal University of São
Carlos, 13565-905 São Carlos, Brazil
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22
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Xiao XY, Song ZY, Li PH, Chen SH, Li LN, Yang M, Lin CH, Huang XJ. Au 25 Nanoclusters Exhibit Superhigh Catalytic Activity in Electrochemical Detection of As(III). Anal Chem 2021; 93:14014-14023. [PMID: 34607426 DOI: 10.1021/acs.analchem.1c03748] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An atomic-level Au nanocluster, as an excellent photocatalyst, is generally not considered as an efficient electrocatalyst due to its poor stability. Herein, a method is proposed to stabilize abundant Au25 on Fe2O3 nanoplates (Au25/OV-Fe2O3) successfully with oxygen vacancies (OV) created. Au25/OV-Fe2O3 shows superhigh catalysis in the electrochemical reduction toward As(III). The record-breaking sensitivity (161.42 μA ppb-1) is two orders of magnitude higher than currently reported, where an ultratrace limit of detection (9 ppt) is obtained, suggesting promising applications in the analysis of organic and bioactive substances. The stability of Au25 is attributed to the Au-Fe bond formed after loading Au25 nanoclusters on Fe2O3 nanoplates through "electron compensation" and bond length (Au-S) shortening. Moreover, the ligand S atoms in Au25 nanoclusters significantly contribute to the reduction of As(III). The fantastic stability and superior catalytic ability of Au25/OV-Fe2O3 provide guidelines to stabilize Au nanoclusters on metal oxides, indicating their potential electroanalytical applications.
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Affiliation(s)
- Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Li-Na Li
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Chu-Hong Lin
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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23
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Rapid Microwave-Assisted Synthesis of Fe3O4/SiO2/TiO2 Core-2-Layer-Shell Nanocomposite for Photocatalytic Degradation of Ciprofloxacin. Catalysts 2021. [DOI: 10.3390/catal11101136] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In this work, magnetic nanoparticles based on magnetite were successfully prepared via rapid microwave-assisted synthesis. In order to obtain the ternary core–shell Fe3O4/SiO2/TiO2 nanocomposite, first magnetite (Fe3O4) nanoparticles were coated with a protective layer of silica (SiO2) and finally with titania (TiO2). The composite configuration comprising porous and photoactive shells should facilitate the removal of organic micropollutants (OMPs) from water. Furthermore, the magnetic core is critical for processing the management of the photocatalytic powder suspension. The magnetization of the prepared magnetic nanoparticles was confirmed by vibrating-sample magnetometry (VSM), while the structure and morphology of the core–shell nanocomposite were investigated by means of XRD, FTIR, and SEM. Adsorption and photocatalysis were evaluated by investigating the removal efficiency of ciprofloxacin (CIP) as a model OMP using the prepared magnetic core–shell nanocomposite under UV-A light irradiation. It was found that the Fe3O4/SiO2/TiO2 nanocomposite showed good synergistic adsorption and photocatalytic properties. The measurement of iron in eluate confirmed that no leaching occurred during the photocatalytic examination. The recovery of magnetic nanocomposite by an external magnetic field confirmed that the magnetically separated catalyst is highly suitable for recycling and reuse.
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24
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Chen SH, Song ZY, Li PH, Xiao XY, Huang HQ, Yang M, Lin CH, Li LN, Huang XJ. Boosting sensitive and selective detection toward Pb(II) via activation effect of Co and orbital coupling between Pb and O over Co@Co 3O 4 nanocatalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126157. [PMID: 34492937 DOI: 10.1016/j.jhazmat.2021.126157] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/14/2021] [Accepted: 05/15/2021] [Indexed: 06/13/2023]
Abstract
Fruitful achievements on electrochemical detection toward Pb(II) have been achieved, and their good performance is generally attributed to the adsorption property of nanomaterials. However, the design of sensing interfaces from the electronic structure and electron transfer process is limited. Here, Co@Co3O4 acquired an ultra-high detection sensitivity of 103.11 µA µM-1 toward Pb(II), outperforming the results previously reported. The interfacial oxygen atoms build an electron bridge for Co activating Co3O4. Particularly, new energy levels of oxygen atoms were generated and matched with that of Pb(II). The strong orbital coupling effect between O and Pb makes the Co@Co3O4 sensitive and selective toward Pb(II). Compared with Co metal and Co3O4, Pb(II) got more electrons from Co@Co3O4, and longer Pb-O bonds were formed, allowing more Pb(II) to be catalyzed and reduced. Also, the superior stability and reproducibility of electrochemical detection make electrodes practicably. This work reveals that metals can stimulate intrinsically catalytic activity of their metal oxides, with the generation of orbit energy levels that match to a specific analyte. It provides a promising strategy for constructing sensitive and selective sensing interfaces toward ultra-low concentration analyte in body fluid and other complex samples.
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Affiliation(s)
- Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Hong-Qi Huang
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230026, China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Chu-Hong Lin
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Li-Na Li
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, And Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
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25
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Wang H, Sun W, Liang X, Zou H, Jiao X, Lin KA, Li T. Two-dimensional Fe2O3 nanosheets as adsorbent for the removal of Pb(II) from aqueous solution. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116197] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Liu D, Tan H, Meng L, Jia H, Zhou W, Wu H. Preparation of Cysteine‐Functionalized Fe
3
O
4
Magnetic Nanoparticles for Determination of Cu
2+. ChemistrySelect 2021. [DOI: 10.1002/slct.202100919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dan Liu
- School of Chemical and Environmental Engineering Jiangsu University of Technology Zhongwu Avenue 1801 Changzhou 213001 P. R. China
| | - Heping Tan
- School of Chemical and Environmental Engineering Jiangsu University of Technology Zhongwu Avenue 1801 Changzhou 213001 P. R. China
| | - Lili Meng
- School of Chemical and Environmental Engineering Jiangsu University of Technology Zhongwu Avenue 1801 Changzhou 213001 P. R. China
| | - Hailang Jia
- School of Chemical and Environmental Engineering Jiangsu University of Technology Zhongwu Avenue 1801 Changzhou 213001 P. R. China
| | - Wenjuan Zhou
- School of Chemical and Environmental Engineering Jiangsu University of Technology Zhongwu Avenue 1801 Changzhou 213001 P. R. China
| | - Haiyan Wu
- School of Chemical and Environmental Engineering Jiangsu University of Technology Zhongwu Avenue 1801 Changzhou 213001 P. R. China
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27
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Ganie AS, Bano S, Khan N, Sultana S, Rehman Z, Rahman MM, Sabir S, Coulon F, Khan MZ. Nanoremediation technologies for sustainable remediation of contaminated environments: Recent advances and challenges. CHEMOSPHERE 2021; 275:130065. [PMID: 33652279 DOI: 10.1016/j.chemosphere.2021.130065] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/17/2021] [Accepted: 02/20/2021] [Indexed: 05/04/2023]
Abstract
A major and growing concern within society is the lack of innovative and effective solutions to mitigate the challenge of environmental pollution. Uncontrolled release of pollutants into the environment as a result of urbanisation and industrialisation is a staggering problem of global concern. Although, the eco-toxicity of nanotechnology is still an issue of debate, however, nanoremediation is a promising emerging technology to tackle environmental contamination, especially dealing with recalcitrant contaminants. Nanoremediation represents an innovative approach for safe and sustainable remediation of persistent organic compounds such as pesticides, chlorinated solvents, brominated or halogenated chemicals, perfluoroalkyl and polyfluoroalkyl substances (PFAS), and heavy metals. This comprehensive review article provides a critical outlook on the recent advances and future perspectives of nanoremediation technologies such as photocatalysis, nano-sensing etc., applied for environmental decontamination. Moreover, sustainability assessment of nanoremediation technologies was taken into consideration for tackling legacy contamination with special focus on health and environmental impacts. The review further outlines the ecological implications of nanotechnology and provides consensus recommendations on the use of nanotechnology for a better present and sustainable future.
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Affiliation(s)
- Adil Shafi Ganie
- Environmental Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Sayfa Bano
- Environmental Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Nishat Khan
- Environmental Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Saima Sultana
- Environmental Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Zubair Rehman
- Section of Organic Chemistry, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Mohammed M Rahman
- Center of Excellence for Advanced Material Research (CEAMR), King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Suhail Sabir
- Environmental Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Frederic Coulon
- School of Water, Energy and Environment, Cranfield University, Cranfield, MK43 0AL, United Kingdom
| | - Mohammad Zain Khan
- Environmental Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India.
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28
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Wang H, Ma J, Zhang J, Feng Y, Vijjapu MT, Yuvaraja S, Surya SG, Salama KN, Dong C, Wang Y, Kuang Q, Tshabalala ZP, Motaung DE, Liu X, Yang J, Fu H, Yang X, An X, Zhou S, Zi B, Liu Q, Urso M, Zhang B, Akande AA, Prasad AK, Hung CM, Van Duy N, Hoa ND, Wu K, Zhang C, Kumar R, Kumar M, Kim Y, Wu J, Wu Z, Yang X, Vanalakar SA, Luo J, Kan H, Li M, Jang HW, Orlandi MO, Mirzaei A, Kim HW, Kim SS, Uddin ASMI, Wang J, Xia Y, Wongchoosuk C, Nag A, Mukhopadhyay S, Saxena N, Kumar P, Do JS, Lee JH, Hong S, Jeong Y, Jung G, Shin W, Park J, Bruzzi M, Zhu C, Gerald RE, Huang J. Gas sensing materials roadmap. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33. [PMID: 33794513 DOI: 10.1088/1361-648x/abf477] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 04/01/2021] [Indexed: 05/14/2023]
Abstract
Gas sensor technology is widely utilized in various areas ranging from home security, environment and air pollution, to industrial production. It also hold great promise in non-invasive exhaled breath detection and an essential device in future internet of things. The past decade has witnessed giant advance in both fundamental research and industrial development of gas sensors, yet current efforts are being explored to achieve better selectivity, higher sensitivity and lower power consumption. The sensing layer in gas sensors have attracted dominant attention in the past research. In addition to the conventional metal oxide semiconductors, emerging nanocomposites and graphene-like two-dimensional materials also have drawn considerable research interest. This inspires us to organize this comprehensive 2020 gas sensing materials roadmap to discuss the current status, state-of-the-art progress, and present and future challenges in various materials that is potentially useful for gas sensors.
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Affiliation(s)
- Huaping Wang
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Jianmin Ma
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Jun Zhang
- College of Physics, Qingdao University, Qingdao 266071, People's Republic of China
| | - Yuezhan Feng
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, Zhengzhou University, Zhengzhou, 450002 Henan, People's Republic of China
| | - Mani Teja Vijjapu
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Saravanan Yuvaraja
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Sandeep G Surya
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Khaled N Salama
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Chengjun Dong
- School of Materials and Energy, Yunnan University, Kunming, People's Republic of China
| | - Yude Wang
- School of Materials and Energy, Yunnan University, Kunming, People's Republic of China
| | - Qin Kuang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
| | - Zamaswazi P Tshabalala
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
| | - David E Motaung
- Department of Physics, University of the Free State, PO Box 339, Bloemfontein ZA9300, South Africa
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
| | - Xianghong Liu
- College of Physics, Qingdao University, Qingdao 266071, People's Republic of China
| | - Junliang Yang
- School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China
| | - Haitao Fu
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang 110819, People's Republic of China
| | - Xiaohong Yang
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang 110819, People's Republic of China
- School of Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China
| | - Xizhong An
- School of Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China
| | - Shiqiang Zhou
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Baoye Zi
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Qingju Liu
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Mario Urso
- IMM-CNR and Dipartimento di Fisica e Astronomia 'Ettore Majorana', Università di Catania, via S Sofia 64, 95123 Catania, Italy
| | - Bo Zhang
- School of Internet of Things Engineering, Jiangnan University, Lihu Avenue 1800#, Wuxi, 214122, People's Republic of China
| | - A A Akande
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
- Advanced Internet of Things, CSIR NextGen Enterprises and Institutions, PO Box 395, Pretoria, 0001, South Africa
| | - Arun K Prasad
- Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India
| | - Chu Manh Hung
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Nguyen Van Duy
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Nguyen Duc Hoa
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Kaidi Wu
- College of Mechanical Engineering, Yangzhou University, People's Republic of China
| | - Chao Zhang
- College of Mechanical Engineering, Yangzhou University, People's Republic of China
| | - Rahul Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, India
| | - Mahesh Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, India
| | - Youngjun Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Jin Wu
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Zixuan Wu
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Xing Yang
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - S A Vanalakar
- Department of Physics, Karmaveer Hire Arts, Science, Commerce and Education College, Gargoti 416-009, India
| | - Jingting Luo
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Hao Kan
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Min Li
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul 08826, Republic of Korea
| | - Marcelo Ornaghi Orlandi
- Department of of Engineering, Physics and Mathematics, São Paulo State University (UNESP), Araraquara - SP 14800-060, Brazil
| | - Ali Mirzaei
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, 71557-13876, Iran
| | - Hyoun Woo Kim
- Division of Materials Science and Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Sang Sub Kim
- Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea
| | - A S M Iftekhar Uddin
- Department of Electrical and Electronic Engineering, Metropolitan University, Bateshwar, Sylhet-3103, Bangladesh
| | - Jing Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Yi Xia
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, People's Republic of China
| | - Chatchawal Wongchoosuk
- Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Anindya Nag
- DGUT-CNAM Institute, Dongguan University of Technology, Dongguan, People's Republic of China
| | | | - Nupur Saxena
- Department of Physics and Astronomical Sciences, Central University of Jammu, Rahya-Suchani, Samba, Jammu, J&K-181143, India
| | - Pragati Kumar
- Department of Nanosciences and Materials, Central University of Jammu, Rahya-Suchani, Samba, Jammu, J & K -181143, India
| | - Jing-Shan Do
- Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
| | - Jong-Ho Lee
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seongbin Hong
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yujeong Jeong
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Gyuweon Jung
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Wonjun Shin
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jinwoo Park
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Mara Bruzzi
- Department of Physics and Astronomy, Unviersity of Florence, Via G. Sansone 1, Sesto Fiorentino, Florence, Italy
| | - Chen Zhu
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
| | - Rex E Gerald
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
| | - Jie Huang
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
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29
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Sarkodie B, Hu Y, Bi W, Jiang J, Li C. Optimizing the catalytic activity of flame‐spray‐pyrolyzed Pt/Fe
2
O
3
catalyst toward CO oxidation: Effect of fluorination and reduction. NANO SELECT 2021. [DOI: 10.1002/nano.202000211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Bismark Sarkodie
- Shanghai Engineering Research Center of Hierarchical Nanomaterials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science & Technology Shanghai China
| | - Yanjie Hu
- Shanghai Engineering Research Center of Hierarchical Nanomaterials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science & Technology Shanghai China
| | - Wei Bi
- Shanghai Engineering Research Center of Hierarchical Nanomaterials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science & Technology Shanghai China
| | - Jiechao Jiang
- Shanghai Engineering Research Center of Hierarchical Nanomaterials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science & Technology Shanghai China
| | - Chunzhong Li
- Shanghai Engineering Research Center of Hierarchical Nanomaterials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science & Technology Shanghai China
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30
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Xie AD, Hu MG, Luo YH, Zhu XG, Wang ZH, Geng WY, Zhang H, Zhang DE, Zhang H. Synthesis of a stable iron( iii)–organic framework for a visible light induced simultaneous photocatalytic reduction of Cr( vi) and the degradation of organic dyes in water. NEW J CHEM 2021. [DOI: 10.1039/d1nj01643a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A stable microporous Fe-MOF was synthesized as single-crystals and was applied as a bifunctional catalyst for the photocatalytic Cr(vi) reduction and organic dyes degradation.
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Affiliation(s)
- A-Di Xie
- School of Environmental and Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222000
- P. R. China
| | - Ming-Gai Hu
- School of Environmental and Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222000
- P. R. China
| | - Yu-Hui Luo
- School of Environmental and Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222000
- P. R. China
| | - Xiang-Gui Zhu
- School of Environmental and Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222000
- P. R. China
| | - Zhi-Hui Wang
- Institute of Polyoxometalate Chemistry
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Wu-Yue Geng
- School of Environmental and Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222000
- P. R. China
| | - Hao Zhang
- School of Environmental and Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222000
- P. R. China
| | - Dong-En Zhang
- School of Environmental and Chemical Engineering
- Jiangsu Ocean University
- Lianyungang 222000
- P. R. China
| | - Hong Zhang
- Institute of Polyoxometalate Chemistry
- Department of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
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31
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Li PH, Song ZY, Yang M, Chen SH, Xiao XY, Duan W, Li LN, Huang XJ. Electrons in Oxygen Vacancies and Oxygen Atoms Activated by Ce 3+/Ce 4+ Promote High-Sensitive Electrochemical Detection of Pb(II) over Ce-Doped α-MoO 3 Catalysts. Anal Chem 2020; 92:16089-16096. [PMID: 33166462 DOI: 10.1021/acs.analchem.0c03725] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Modulating the active sites of oxygen vacancies (OVs) to enhance the catalytic properties of nanomaterials has attracted much research interest in various fields, but its intrinsic catalytic mechanism is always neglected. Herein, we establish an efficient strategy to promote the electrochemical detection of Pb(II) by regulating the concentration of OVs in α-MoO3 nanorods via doping Ce3+/Ce4+ ions. α-MoO3 with the Ce-doped content of 9% (C9M) exhibited the highest detection sensitivity of 106.64 μM μA-1 for Pb(II), which is higher than that achieved by other metal oxides and most precious metal nanomaterials. It is found that C9M possessed the highest concentration of OVs, which trapped some electrons for strong affinity interaction with Pb(II) and provided numerous atomic level interfaces of high surface free energy for catalysis reactions. X-ray absorption fine structure spectra and density functional theory calculation indicate that Pb(II) was bonded with the surface-activated oxygen atoms (Os) around Ce ions and obtained some electrons from Os. Besides, the longer Pb-O bonds on C9M were easier to break, causing a low desorption energy barrier to effectively accelerate Pb(II) desorbing to the electrode surface. This study helps to understand the changes in electronic structure and catalytic performance with heteroatom doping and OVs in chemically inert oxides and provide a reference for designing high-active electrocatalytic interfaces to realize ultrasensitive analysis of environmental contaminants.
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Affiliation(s)
- Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zong-Yin Song
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Wanchun Duan
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Li-Na Li
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology and Environmental Materials and Pollution Control Laboratory, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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32
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Engineering multi-shell Mn-Co oxide for ultrasensitive electroanalysis of Pb(II) in mining subsidence area water with promotion of adsorption and electron mediation: Behaviors and mechanisms of Mn(II)/Mn(III) and Co(II)/Co(III) cycles. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136991] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Yang M, Li PH, Chen SH, Xiao XY, Tang XH, Lin CH, Huang XJ, Liu WQ. Nanometal Oxides with Special Surface Physicochemical Properties to Promote Electrochemical Detection of Heavy Metal Ions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001035. [PMID: 32406188 DOI: 10.1002/smll.202001035] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/26/2020] [Accepted: 04/06/2020] [Indexed: 06/11/2023]
Abstract
Heavy metal ions (HMIs) are one of the major environmental pollution problems currently faced. To monitor and control HMIs, rapid and reliable detection is required. Electrochemical analysis is one of the promising methods for on-site detection and monitoring due to high sensitivity, short response time, etc. Recently, nanometal oxides with special surface physicochemical properties have been widely used as electrode modifiers to enhance sensitivity and selectivity for HMIs detection. In this work, recent advances in the electrochemical detection of HMIs using nanometal oxides, which are attributed to specific crystal facets and phases, surficial defects and vacancies, and oxidation state cycle, are comprehensively summarized and discussed in aspects of synthesis, characterization, electroanalysis application, and mechanism. Moreover, the challenges and opportunities for the development and application of nanometal oxides with functional surface physicochemical properties in electrochemical determination of HMIs are presented.
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Affiliation(s)
- Meng Yang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Xiang-Yu Xiao
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Xiang-Hu Tang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Chu-Hong Lin
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Wen-Qing Liu
- Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, P. R. China
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34
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Jian M, Xue P, Shi K, Li R, Ma L, Li P. Efficient degradation of indole by microbial fuel cell based Fe 2O 3-polyaniline-dopamine hybrid composite modified carbon felt anode. JOURNAL OF HAZARDOUS MATERIALS 2020; 388:122123. [PMID: 31972431 DOI: 10.1016/j.jhazmat.2020.122123] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 05/20/2023]
Abstract
Indole is a high-toxic refractory nitrogen-containing compound that could cause serious harm to the human and ecosystem. It has been a challenge to develop economical and efficient technology for degrading indole. Microbial fuel cell (MFC) has great potential in the removal of organic pollutants utilizing microorganisms as catalysts to degrade organic matter into the nutrients. Herein, a novel anode of Fe2O3-polyaniline-dopamine hybrid composite modified carbon felt (Fe2O3-PDHC/CF) was prepared by electrochemical deposition. The degradation efficiency of indole by the MFC loading Fe2O3-PDHC/CF anode was up to 90.3 % in 120 h operation, while that of the MFC loading CF anode was only 44.0 %. The maximum power density of the MFC loading Fe2O3-PDHC/CF anode was 3184.4 mW·m-2, increasing 113 % compared to the MFC loading CF anode. The superior performances of the MFC with Fe2O3-PDHC surface-modified anode owned to the synergistic effect of high conductive Fe2O3 and admirably biocompatible polyaniline-dopamine. MFC with the Fe2O3-PDHC/CF anode could produce considerable electricity and effectively degrade indole in water, which demonstrated a practical approach for the efficient degradation of refractory organic compounds in wastewater.
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Affiliation(s)
- Minjie Jian
- National Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, PR China; Ningxia Academy of Metrology & Quality Inspection, Yinchuan, 750200, PR China
| | - Ping Xue
- National Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, PR China.
| | - Keren Shi
- National Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, PR China
| | - Rui Li
- National Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, PR China
| | - Lan Ma
- National Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, PR China
| | - Peng Li
- National Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, PR China
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35
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Chen X, Zhang Y, Li C, Li C, Zeng T, Wan Q, Li Y, Ke Q, Yang N. Nanointerfaces of expanded graphite and Fe2O3 nanomaterials for electrochemical monitoring of multiple organic pollutants. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135118] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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36
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Ravipati ES, Mahajan NN, Sharma S, Hatware KV, Patil K. The toxicological effects of lead and its analytical trends: an update from 2000 to 2018. Crit Rev Anal Chem 2019; 51:87-102. [DOI: 10.1080/10408347.2019.1678381] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Eswar Sairam Ravipati
- School of Pharmacy and Technology Management SVKM’s NMIMS, Shirpur, Maharashtra, India
| | - Nikhil Nitin Mahajan
- School of Pharmacy and Technology Management SVKM’s NMIMS, Shirpur, Maharashtra, India
| | - Sanjay Sharma
- School of Pharmacy and Technology Management SVKM’s NMIMS, Shirpur, Maharashtra, India
| | - Ketan V. Hatware
- School of Pharmacy and Technology Management SVKM’s NMIMS, Shirpur, Maharashtra, India
| | - Kiran Patil
- School of Pharmacy and Technology Management SVKM’s NMIMS, Shirpur, Maharashtra, India
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37
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Zhang S, Shi Q, Christodoulatos C, Meng X. Lead and cadmium adsorption by electrospun PVA/PAA nanofibers: Batch, spectroscopic, and modeling study. CHEMOSPHERE 2019; 233:405-413. [PMID: 31176904 DOI: 10.1016/j.chemosphere.2019.05.190] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 04/26/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
Water-stable PVA/PAA nanofibers were fabricated through electrospinning and evaluated for their performance in lead (Pb(II)) and cadmium (Cd(II)) removal from water in a batch experiment. The adsorption mechanism of Pb(II) was explored using the extended X-ray absorption fine structure (EXAFS) spectroscopic analysis. The PVA/PAA nanofibers showed a pH-dependent behavior for heavy metal removal, and its adsorption capacities for Pb(II) and Cd(II) could reach as high as 159 and 102 mg/g, respectively. The calcium ion (Ca(II)) had no effect on Pb(II) removal at pH 5.0 whereas it significantly reduced Cd(II) removal at pH 7.0. The adsorption of Pb(II) and Cd(II) was spontaneous and exothermic in nature with a decrease in randomness. The saturated PVA/PAA nanofibers could be regenerated using acidic solutions for reuse. The Fourier-transform infrared (FTIR) spectroscopic analysis indicated the formation of surface complexes between adsorbed Pb(II) and Cd(II) and carboxyl groups on PVA/PAA nanofibers. Moreover, EXAFS analysis suggested that a Pb(II) cation was chelated with three carboxyl groups on the nanofibers. This molecular-level adsorption structure was successfully implemented into a surface complexation model for the prediction of the macroscopic Pb(II) and Cd(II) adsorption behaviors. The results gained from this study provided complementary information on heavy metal removal by a new generation of adsorbents and improved the fundamental understanding for the removal process.
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Affiliation(s)
- Shujuan Zhang
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, United States
| | - Qiantao Shi
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, United States
| | - Christos Christodoulatos
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, United States
| | - Xiaoguang Meng
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
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38
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Torkashvand N, Sarlak N. Synthesis of completely dispersed water soluble functionalized graphene/γ-Fe2O3 nanocomposite and its application as an MRI contrast agent. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111286] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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A novel electrochemical sensor based on a glassy carbon electrode modified with dendrimer functionalized magnetic graphene oxide for simultaneous determination of trace Pb(II) and Cd(II). Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.180] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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40
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Liang K, Hui LS, Turak A. Probing the multi-step crystallization dynamics of micelle templated nanoparticles: structural evolution of single crystalline γ-Fe 2O 3. NANOSCALE 2019; 11:9076-9084. [PMID: 31026010 DOI: 10.1039/c9nr00148d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Iron oxide nanoparticles synthesized with narrow size distribution were characterized using Raman spectroscopy, transmission electron microscopy and a superconducting quantum interference device magnetometer to investigate their composition, crystal structure and magnetic properties. Raman allowed us to explore the polymorphous transition of the iron oxide from the beginning of the synthesis process, as Raman can be used to monitor the precursors, the diblock-copolymer micelles and the resultant particles simultaneously under various processing steps. As different polymorphs possess distinct Raman active phonon modes, it also allows the identification of the exact phases of the resultant nanoparticles. Consequently, we show that the reverse micelle process results in pure phase nanoparticles only under certain conditions. Using insights obtained from examining the entire synthesis process, we can adjust the structure of small nanoparticles (∼6 nm) to achieve coercivity and saturation magnetization values that are usually only obtainable from larger particles (25 nm or larger). In this way, we show a route to tunable magnetic response based on the purity of the crystal phase rather than the particle size. By understanding the evolution of the entire synthesis process, it is possible to adjust the processing conditions to yield monodisperse single crystal phase nanoparticles for widespread use in a variety of applications.
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Affiliation(s)
- Kunyu Liang
- Department of Engineering Physics, McMaster University, Hamilton, Ontario, Canada.
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41
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Zhang J, Mou F, Wu Z, Tang S, Xie H, You M, Liang X, Xu L, Guan J. Simple-Structured Micromotors Based on Inherent Asymmetry in Crystalline Phases: Design, Large-Scale Preparation, and Environmental Application. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16639-16646. [PMID: 30990654 DOI: 10.1021/acsami.9b03579] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The key principle of designing a micro/nanomotor is to introduce asymmetry to a micro/nanoparticle. However, micro/nanomotors designed based on external asymmetry and inherent chemical and geometrical asymmetry usually suffer from tedious small-scale preparation, high cost, and/or complexity of external power and control devices, making them face insurmountable hurdles in practical applications. Herein, considering the possible distinct properties of different polymorphs, we propose a novel design strategy of simple-structured micromotors by introducing inherent asymmetry in crystalline phases. The inherent phase asymmetry can be easily introduced in spherical TiO2 particles by adjusting the calcination temperature to control the phase transition and growth of primary grains. The as-designed anatase/rutile TiO2 micromotors not only show efficient autonomous motions controlled by light in liquid media stemming from the asymmetric surface photocatalytic redox reactions but also have a promising application in environmental remediation due to their high photocatalytic activity in "on-the-fly" degradation of organic pollutants, facile large-scale fabrication, and low cost. The proposed design strategy may pave the way for the large-scale productions and applications of micro/nanomotors.
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Affiliation(s)
- Jianhua Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Fangzhi Mou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Zhen Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Shaowen Tang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Huarui Xie
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Ming You
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Xiong Liang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Leilei Xu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
| | - Jianguo Guan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering , Wuhan University of Technology , 122 Luoshi Road , Wuhan 430070 , China
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42
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Shi H, Zhu F, Zhou X, Li H, Yang F, Zhang X, Liu J. Large scale fabrication of disposable carbon cloth electrochemical sensors for simultaneous determination of heavy metal ion. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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43
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Masud MK, Kim J, Billah MM, Wood K, Shiddiky MJA, Nguyen NT, Parsapur RK, Kaneti YV, Alshehri AA, Alghamidi YG, Alzahrani KA, Adharvanachari M, Selvam P, Hossain MSA, Yamauchi Y. Nanoarchitectured peroxidase-mimetic nanozymes: mesoporous nanocrystalline α- or γ-iron oxide? J Mater Chem B 2019; 7:5412-5422. [DOI: 10.1039/c9tb00989b] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Next-generation nanozyme based biosensing: mesoporous nanocrystalline α- or γ-iron oxide?
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44
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Jian W, Jia R, Wang J, Zhang HX, Bai FQ. Iron oxides with a reverse spinel structure: impact of active sites on molecule adsorption. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00790c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe3O4 and γ-Fe2O3 with the same crystal structure reflect different catalytically active sites leading to different catalyst properties.
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Affiliation(s)
- Wei Jian
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Ran Jia
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Jian Wang
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Hong-Xing Zhang
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
| | - Fu-Quan Bai
- Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry and College of Chemistry
- Jilin University
- Changchun
- China
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45
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Li SS, Zhou WY, Jiang M, Li LN, Sun YF, Guo Z, Liu JH, Huang XJ. Insights into diverse performance for the electroanalysis of Pb(II) on Fe2O3 nanorods and hollow nanocubes: Toward analysis of adsorption sites. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.08.069] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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BiOCl/Fe2O3 heterojunction nanoplates with enhanced visible-light-driven photocatalytic performance for degrading organic pollutants and reducing Cr(VI). J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.06.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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47
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Cong Y, Geng Z, Sun Y, Yuan L, Wang X, Zhang X, Wang L, Zhang W, Huang K, Feng S. Cation Segregation of A-Site Deficiency Perovskite La 0.85FeO 3-δ Nanoparticles toward High-Performance Cathode Catalysts for Rechargeable Li-O 2 Battery. ACS APPLIED MATERIALS & INTERFACES 2018; 10:25465-25472. [PMID: 29984983 DOI: 10.1021/acsami.8b07924] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cation segregation of perovskite oxide is crucial to develop high-performance catalysts. Herein, we achieved the exsolution of α-Fe2O3 from parent La0.85FeO3-δ by a simple heat treatment. Compared to α-Fe2O3 and La0.85FeO3-δ, α-Fe2O3-LaFeO3- x achieved a significant improvement of lithium-oxygen battery performance in terms of discharge specific capacity and cycling stability. The promotion can be attributed to the interaction between α-Fe2O3 and LaFeO3- x. During the cycling test, α-Fe2O3-LaFeO3- x can be stably cycled for 108 cycles at a limited discharge capacity of 500 mAh g-1 at a current density of 100 mA g-1, which is remarkably longer than those of La0.85FeO3-δ (51 cycles), α-Fe2O3 (21 cycles), and mechanical mixing of LaFeO3 and α-Fe2O3 (26 cycles). In general, these results suggest a promising method to develop efficient lithium-oxygen battery catalysts via segregation.
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Affiliation(s)
| | | | | | | | | | - Xinbo Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130022 , People's Republic of China
| | - Lei Wang
- College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , People's Republic of China
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48
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Peng X, Liang WB, Wen ZB, Xiong CY, Zheng YN, Chai YQ, Yuan R. Ultrasensitive Fluorescent Assay Based on a Rolling-Circle-Amplification-Assisted Multisite-Strand-Displacement-Reaction Signal-Amplification Strategy. Anal Chem 2018; 90:7474-7479. [DOI: 10.1021/acs.analchem.8b01015] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Xin Peng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Wen-Bin Liang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Zhi-Bin Wen
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Cheng-Yi Xiong
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ying-Ning Zheng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ya-Qin Chai
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
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49
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Liu H, Lu X, Li M, Zhang L, Pan C, Zhang R, Li J, Xiang W. Structural Incorporation of Manganese into Goethite and Its Enhancement of Pb(II) Adsorption. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:4719-4727. [PMID: 29608058 DOI: 10.1021/acs.est.7b05612] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Natural goethite (α-FeOOH) commonly accommodates various metal elements by substituting for Fe, which greatly alters the surface reactivity of goethite. This study discloses the enhancement of Mn-substitution for the Pb2+adsorption capacity of goethite. The incorporated Mn in the synthesized goethite presents as Mn(III) and causes a slight decrease in the a and c of the unit cell parameters and an observable increase in the b direction due to the Jahn-Teller effect of the Mn(III)O6 octahedra. With the Mn content increasing, the particle size decreases gradually, and the surface clearly becomes roughened. The Pb2+ adsorption capacity of goethite is observably enhanced by Mn substitution due to the modified surface complexes. And the increased surface-area-normalized adsorption capacity for Mn-substituted goethite indicated that the enhancement of Pb adsorption is not only attributed to the increase of surface area but also to the change of binding complexes. Extended X-ray absorption fine structure (EXAFS) analysis indicates that the binding structures of Pb2+ on goethite presents as edge-sharing complexes with a regular RPb-Fe = 3.31 Å. In the case of Mn-goethite, Pb2+ is also bound with the Mn surface site on the edge-sharing complex with a larger RPb-Mn = 3.47 Å. The mechanism for enhancing Pb2+ adsorption on Mn-goethite can be interpreted as the preferred Pb2+ binding on the Mn site of Mn-goethite surface. In a summary, the Mn-goethite has great potential for material development in environmental remediation.
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Affiliation(s)
- Huan Liu
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering , Nanjing University , Nanjing , Jiangsu 210023 , China
- Department of Earth and Planetary Sciences , Washington University in St. Louis , 1 Brookings Drive , St. Louis , Missouri 63130 , United States
| | - Xiancai Lu
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering , Nanjing University , Nanjing , Jiangsu 210023 , China
| | - Meng Li
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering , Nanjing University , Nanjing , Jiangsu 210023 , China
| | - Lijuan Zhang
- Chinese Academy of Sciences, Shanghai Institute Applied Physics , Shanghai Synchrotron Radiation Facility , Shanghai 201204 , People's Republic of China
| | - Chao Pan
- Department of Energy, Environmental and Chemical Engineering , Washington University in St. Louis , St. Louis , Missouri 63130 United States
| | - Rui Zhang
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering , Nanjing University , Nanjing , Jiangsu 210023 , China
| | - Juan Li
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering , Nanjing University , Nanjing , Jiangsu 210023 , China
| | - Wanli Xiang
- Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering , Nanjing University , Nanjing , Jiangsu 210023 , China
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50
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Zhou WY, Li SS, Song JY, Jiang M, Jiang TJ, Liu JY, Liu JH, Huang XJ. High Electrochemical Sensitivity of TiO 2- x Nanosheets and an Electron-Induced Mutual Interference Effect toward Heavy Metal Ions Demonstrated Using X-ray Absorption Fine Structure Spectra. Anal Chem 2018. [PMID: 29542323 DOI: 10.1021/acs.analchem.7b02315] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Mutual interference is a severe issue that occurs during the electrochemical detection of heavy metal ions. This limitation presents a notable drawback for its high sensitivity to specific targets. Here, we present a high electrochemical sensitivity of ∼237.1 μA cm-2 μM-1 toward copper(II) [Cu(II)] based on oxygen-deficient titanium dioxide (TiO2- x) nanosheets. We fully demonstrated an atomic-level relationship between electrochemical behaviors and the key factors, including the high-energy (001) facet percentage, oxygen vacancy concentration, surface -OH content, and charge carrier density, is fully demonstrated. These four factors were quantified using Raman, electron spin resonance, X-ray photoelectron spectroscopy spectra, and Mott-Schottky plots. In the mutual interference investigation, we selected cadmium(II) [Cd(II)] as the target ion because of the significant difference in its stripping potential (∼700 mV). The results show that the Cd(II) can enhance the sensitivity of TiO2- x nanosheets toward Cu(II), exhibiting an electron-induced mutual interference effect, as demonstrated by X-ray absorption fine structure spectra.
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Affiliation(s)
- Wen-Yi Zhou
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei 230031 , People's Republic of China.,Department of Chemistry , University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Shan-Shan Li
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei 230031 , People's Republic of China.,Department of Chemistry , University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Jie-Yao Song
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Min Jiang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei 230031 , People's Republic of China.,Department of Chemistry , University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Tian-Jia Jiang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei 230031 , People's Republic of China.,Department of Chemistry , University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Jin-Yun Liu
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei 230031 , People's Republic of China.,Department of Chemistry , University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Jin-Huai Liu
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei 230031 , People's Republic of China.,Department of Chemistry , University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei 230031 , People's Republic of China.,Department of Chemistry , University of Science and Technology of China , Hefei 230026 , People's Republic of China
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