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Shaghaleh H, Alhaj Hamoud Y, Sun Q. Effective and green in-situ remediation strategies based on TEMPO-nanocellulose/lignin/MIL-100(Fe) hydrogel nanocomposite adsorbent for lead and copper in agricultural soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124623. [PMID: 39069244 DOI: 10.1016/j.envpol.2024.124623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 07/11/2024] [Accepted: 07/25/2024] [Indexed: 07/30/2024]
Abstract
Hydrogel adsorbents are promising tools for reducing heavy metals' bioavailability in contaminated soil. However, their practical feasibility remains limited by the low stability, inefficient removal efficiency, and potential secondary pollution. Optimizing the adsorption operation and the functional properties of hydrogel adsorbents could eliminate this method's drawbacks. Herein, three innovative in-situ remediation strategies for Pb/Cu-contaminated soil were adopted based on the concept of novel TEMPO-cellulose (TO-NFCs)/lignin/acrylamide@MIL-100(Fe) nanocomposite hydrogel adsorbent (NCLMH). Characteristic analyses revealed ideal Pb/Cu adsorption mechanisms by swelling, complexation, electrical attraction, and ion exchange via carboxyl/hydroxyl/carbonyl groups and unsaturated Fe(III) sites on ANCMH besides FeOOH formation. The highest maximum theoretical adsorption capacities of Pb(II) and Cu(II) on ANCMH were 416.39 and 133.98 mg/g, under pH 6.5, governed by pseudo-second-order/Freundlich models. Greenhouse pot experiments with contaminated soils amended with two-depth layers of 0.5% NCLMHs (SA@NCLMH) displayed a decline in Pb and Cu bioavailability up to 85.9% and 74.5% within 45 d. Soil column studies simulating continuous water soil flushing coupled with NCLMH layers, instead of conventional extractant fluids, and connected to NCLMH-sand column as purification unit (CF@NCLMH) achieved higher removal rates for Pb, and Cu of 89.5% and 77.2% within 24 h. Alternatively, conducting multiple-pulse soil flushing mode (MF@NCLMH) gained the highest Pb and Cu removal of 96.5% and 85.4%, as the water flushing-stop flux events allowed adequate water movement/residence period, promoting Pb/Cu desorption-adsorption from soil to NCLMH. Also, the NCLMH-sand column conducting and easy separation of the stable/reusable NCLMHs prevented the potential secondary pollution. Interestingly, the three remediated soils reached the corresponding regulation of the permissible limits for Pb and Cu residential scenarios in medium-to-heavily agricultural polluted soils, alleviating the Pb/Cu bioaccumulation and phytotoxicity symptoms in cultivated wheat, especially after MF@NCLMH treatment. This study introduces promising alternative remediation strategies with high sustainability and feasibility in acidic-to-neutral heavy metal-contaminated agricultural soil.
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Affiliation(s)
- Hiba Shaghaleh
- Key Lab of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yousef Alhaj Hamoud
- The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210098, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China
| | - Qin Sun
- Key Lab of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China.
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Kumari P, Kumar K, Kumar A. In-situ oil-spill remediation by an electrodeposited superhydrophobic copper mesh. MARINE POLLUTION BULLETIN 2024; 204:116513. [PMID: 38795464 DOI: 10.1016/j.marpolbul.2024.116513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 04/14/2024] [Accepted: 05/18/2024] [Indexed: 05/28/2024]
Abstract
The present study aims to combat the problem of oil in water pollution via its separation using a superhydrophobic copper mesh. An ecofriendly superhydrophobic copper mesh with a water contact angle of 166 ± 2° is developed by a facile two-step process (electrodeposition followed by coating). The coated mesh with mechanical robustness, chemical endurance and thermal stability is a promising choice for real-world conditions. Additionally, its resistance to corrosion in harsh chemical environments ensures its long-term durability. With a separation efficiency of 99.9 %, the coated mesh serves as an efficient medium for oil-water separation. It can be used as a reusable filtering medium with high separation efficiency in alkali and neutral environments. Besides, it is also competent for continuous oil-water separation and collection of oil from wastewater. Thus, the above study clearly manifests that the coated mesh holds tremendous potential for large-scale oil spill cleanup.
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Affiliation(s)
- Preeti Kumari
- Department of Chemical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand 826004, India
| | - Kaushal Kumar
- Department of Physics, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand 826004, India
| | - Aditya Kumar
- Department of Chemical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand 826004, India.
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Sau S, Kundu S. Fabrication of highly stretchable salt and solvent blended PEDOT:PSS/PVA free-standing films: non-linear to linear electrical conduction response. RSC Adv 2024; 14:5193-5206. [PMID: 38332796 PMCID: PMC10851924 DOI: 10.1039/d3ra08260a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/02/2024] [Indexed: 02/10/2024] Open
Abstract
Nowadays, ductile and conducting polymeric materials are highly utilizable in the realm of stretchable organic electronics. Here, mechanically ductile and electrically conducting free-standing films are fabricated by blending different solvents such as dimethyl sulfoxide (DMSO), diethylene glycol (DEG) and N,N-dimethylformamide (DMF), and salts such as silver nitrate (AgNO3), zinc chloride (ZnCl2), copper chloride (CuCl2) and indium chloride (InCl3) with the homogeneous solution of poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) and poly(vinyl alcohol) (PVA) through solution casting method. The presence of salt modifies the PEDOT conformation from benzoid to quinoid, and induces the evolution of different morphologies. ZnCl2 or AgNO3 blended films have lower surface roughness and good miscibility with polymers, while CuCl2 or InCl3 blended films have relatively higher surface roughness as well as irregularly distributed surface morphology. Some crystalline domains are also formed due to the salt agglomeration. The presence of salt inside PEDOT:PSS/PVA/solvent system changes the current-voltage response from non-linear to linear. Among all the films, zinc salt blended PEDOT:PSS/PVA/DMSO, PEDOT:PSS/PVA/DEG and PEDOT:PSS/PVA/DMF films have higher conductivity, and zinc salt blended PEDOT:PSS/PVA/DEG film shows the highest conductivity of 0.041 ± 0.0014 S cm-1, while silver salt blended PEDOT:PSS/PVA/DMSO, PEDOT:PSS/PVA/DEG and PEDOT:PSS/PVA/DMF films have higher elongation at break, and silver salt blended PEDOT:PSS/PVA/DMSO film shows the highest elongation at break of 670 ± 31%. Both the charge carriers, i.e., electrons and ions, contribute to the electrical conduction, and the presence of hydrogen bonds and ionic interactions among PEDOT+, PSS-, PVA, residual solvent, salt cations and anions modifies the film behaviours. Among all the films, ZnCl2 blended PEDOT:PSS/PVA/DMSO film offers relatively superior behaviours having higher conductivity (0.025 ± 0.0013 S cm-1) and elongation at break (517 ± 15%), and therefore can have potential applications in the fields of wearable devices, bioelectronics, etc.
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Affiliation(s)
- Sanjib Sau
- Soft Nano Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology Vigyan Path, Paschim Boragaon, Garchuk Guwahati Assam 781035 India
| | - Sarathi Kundu
- Soft Nano Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology Vigyan Path, Paschim Boragaon, Garchuk Guwahati Assam 781035 India
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Balasubramaniyan NG, Perumal P. Highly efficient electrochemical detection of H 2O 2 utilizing an innovative copper porphyrinic nanosheet decorated bismuth metal-organic framework modified electrode. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:624-638. [PMID: 38198128 DOI: 10.1039/d3ay01804k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
The ability to detect hydrogen peroxide is important due to the presence in biological systems. Researchers are highly interested in developing efficient electrochemical hydrogen peroxide sensors. Metal-organic frameworks (MOFs) with their composites, an emerging class of porous materials, are ideal candidates for heterogeneous catalysts because of their versatile functionalities. Using a facile solvothermal reaction, we fabricated a 2D Cu-TCPP nanosheet uniformly grown on a 3D Bi-MOF. The process takes advantage of the large surface area and pore volume of the Bi-MOF while maintaining the crystallinity of Bi-BTC when Cu-TCPP is added to the surface. The sensor was fabricated by depositing the Bi-BTC-Cu-TCPP nanocomposites on a glassy carbon electrode to conduct electrochemical measurements such as cyclic voltammetry and electrochemical impedance spectroscopy. Finally, differential pulse voltammetry was utilized to investigate the effect of hydrogen peroxide on the electrochemical activity of Bi-BTC-Cu-TCPP deposited on a glassy carbon electrode. This electrode showed high electrochemical performance activity for the reduction of hydrogen peroxide. The sensor showed a linear response to H2O2 in the 10-120 μM concentration range, with a detection limit of 0.20 μM. The sensor was also stable and selective for H2O2 in the presence of other interfering species. This work demonstrates the potential of nanocomposite-based electrochemical sensors for sensitive and selective detection of H2O2. Besides, the modified electrode has many advantages, including remarkable catalytic activity, long-term stability, good reproducibility, and a good signal response during H2O2 reduction.
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Affiliation(s)
- Nandha Gopal Balasubramaniyan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu 603 203, India.
| | - Panneerselvam Perumal
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu 603 203, India.
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Effect of deposition conditions on the properties of Ni–Mo–W coatings as electrocatalysts for hydrogen evolution reaction. J APPL ELECTROCHEM 2021. [DOI: 10.1007/s10800-021-01615-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chong H, Zhang G, Wu Y, Xu B, Wang G, Wang C. Enantioselective recognition of amino acid based on electrochemical deposition and X-ray diffraction technology. J Inorg Biochem 2021; 218:111398. [PMID: 33684685 DOI: 10.1016/j.jinorgbio.2021.111398] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 02/05/2021] [Accepted: 02/06/2021] [Indexed: 02/01/2023]
Abstract
Addition of D-Asp in the electrochemical deposition process of Bismuth film resulted the generation of a new diffraction peak in X-ray diffraction (XRD) spectrum. This phenomenon was not observed in the situation of L-Asp. The new diffraction peak might suggest D-Asp could result in the generation of a specific Bismuth structure. Enantioselective recognition of D- and L-Asp can be realized based on this new XRD peak. The limit of detection was determined to be 3.5 × 10-8 and 1.7 × 10-8 mol L-1 for D- and L-Asp, respectively. The XRD spectra of electrodeposited Copper films fabricated in the presence of D- or L-Asp showed different lattice plane diffraction peak intensity ratios. The reason was believed to be chirality induced different binding capabilities of Asp enantiomers that influenced Copper film growth. Therefore, the combination of electrochemical deposition using Copper as metal source and XRD technology can be used to achieve enantioselective recognition of Asp. The limit of detection for D- and L-Asp were determined to be 1.5 × 10-10 and 1.2 × 10-11 mol L-1, respectively.
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Affiliation(s)
- Hui Chong
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, China
| | - Gaomin Zhang
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, China
| | - Yaohang Wu
- College of Materials Science and Engineering, Jilin University, Changchun City, Jilin Province, China
| | - Bin Xu
- Testing Center of Yangzhou University, City of Yangzhou, Jiangsu Province, China
| | - Guoxiu Wang
- School of Mathematical and Physical Sciences, PO Box 123, Broadway, Sydney, NSW, 2007 Australia.
| | - Chengyin Wang
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, China; Testing Center of Yangzhou University, City of Yangzhou, Jiangsu Province, China.
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Hamedpour V, Sasaki Y, Zhang Z, Kubota R, Minami T. Simple Colorimetric Chemosensor Array for Oxyanions: Quantitative Assay for Herbicide Glyphosate. Anal Chem 2019; 91:13627-13632. [PMID: 31556601 DOI: 10.1021/acs.analchem.9b02822] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Although the determination of oxyanions due to correlation with metabolic processes and diseases is in high demand, most of the developed methods are suffering from a shortage of a capability of on-site analysis, sensitivity, and user-friendliness. This paper introduces the first colorimetric chemosensor array targeting various anions including glyphosate. The proposed sensor benefits from some notable features such as utilizing only commercially available reagents, recognizing similarly structured compounds by biomaterial-free sensors, and providing a fingerprint-like response originating from pattern recognition. The detection mechanism is based on an anion sensing strategy named coordination binding-based sensor array (CBSA). In CBSA, competitive coordinative bonding of a metal ion (Zn2+) between a catechol dye (i.e., indicator) and target anions occurs, and changes in the optical properties of the dye represent the target's concentration. For data processing, two chemometrical techniques including linear discrimination analysis (LDA) and an artificial neural network (ANN) for pattern classification and regression/prediction purposes were successfully employed, respectively. Finally, the proposed chemosensor was subjected to glyphosate samples (commercial herbicide and tap water samples) and produced satisfactory results.
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Affiliation(s)
- Vahid Hamedpour
- Institute of Industrial Science , The University of Tokyo , 4-6-1 Komaba , Meguro-ku, Tokyo 153-8505 , Japan
| | - Yui Sasaki
- Institute of Industrial Science , The University of Tokyo , 4-6-1 Komaba , Meguro-ku, Tokyo 153-8505 , Japan
| | - Zhoujie Zhang
- Institute of Industrial Science , The University of Tokyo , 4-6-1 Komaba , Meguro-ku, Tokyo 153-8505 , Japan
| | - Riku Kubota
- Institute of Industrial Science , The University of Tokyo , 4-6-1 Komaba , Meguro-ku, Tokyo 153-8505 , Japan
| | - Tsuyoshi Minami
- Institute of Industrial Science , The University of Tokyo , 4-6-1 Komaba , Meguro-ku, Tokyo 153-8505 , Japan
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Xia C, Geng H, Li X, Zhang Y, Wang F, Tang X, Blake RE, Li H, Chang SJ, Yu C. Mechanism of methylphosphonic acid photo-degradation based on phosphate oxygen isotopes and density functional theory. RSC Adv 2019; 9:31325-31332. [PMID: 35527942 PMCID: PMC9072446 DOI: 10.1039/c9ra05169d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 09/06/2019] [Indexed: 11/21/2022] Open
Abstract
Methylphosphonic acid (MPn) is an intermediate in the synthesis of the phosphorus-containing nerve agents, such as sarin and VX, and a biosynthesis product of marine microbes with ramifications to global climate change and eutrophication. Here, we applied the multi-labeled water isotope probing (MLWIP) approach to investigate the C-P bond cleavage mechanism of MPn under UV irradiation and density functional theory (DFT) to simulate the photo-oxidation reaction process involving reactive oxygen species (ROS). The results contrasted with those of the addition of the ROS-quenching compounds, 2-propanol and NaN3. The degradation kinetics results indicated that the extent of MPn degradation was more under alkaline conditions and that the degradation process was more rapid at the initial stage of the reaction. The phosphate oxygen isotope data confirmed that one exogenous oxygen atom was incorporated into the product orthophosphate (PO4) following the C-P bond cleavage, and the oxygen isotopic composition of this free PO4 was found to vary with pH. The combined results of the ROS-quenching experiments and DFT indicate that the C-P bond was cleaved by OH-/˙OH and not by other reactive oxygen species. Based on these results, we have established a mechanistic model for the photolysis of MPn, which provides new insights into the fate of MPn and other phosphonate/organophosphate compounds in the environment.
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Affiliation(s)
- Congcong Xia
- Jiangxi Transportation Institute China 809 Jinsha Road 330038 Nanchang China
- School of Energy & Environmental Engineering, University of Science and Technology Beijing 30 Xueyuan Road 100083 Beijing China
| | - Huanhuan Geng
- School of Energy & Environmental Engineering, University of Science and Technology Beijing 30 Xueyuan Road 100083 Beijing China
| | - Xiaobao Li
- Jiangxi Transportation Institute China 809 Jinsha Road 330038 Nanchang China
| | - Yiyue Zhang
- School of Energy & Environmental Engineering, University of Science and Technology Beijing 30 Xueyuan Road 100083 Beijing China
| | - Fei Wang
- School of Energy & Environmental Engineering, University of Science and Technology Beijing 30 Xueyuan Road 100083 Beijing China
| | - Xiaowen Tang
- School of Pharmaceutical Sciences, Sun Yet-sen University 510006 Guangzhou China
| | - R E Blake
- School of Energy & Environmental Engineering, University of Science and Technology Beijing 30 Xueyuan Road 100083 Beijing China
- Department of Geology and Geophysics, Yale University P.O. Box 208109 New Haven CT 06520-8109 USA
| | - Hui Li
- Department of Geology and Geophysics, Yale University P.O. Box 208109 New Haven CT 06520-8109 USA
| | - Sae Jung Chang
- Department of Geology and Geophysics, Yale University P.O. Box 208109 New Haven CT 06520-8109 USA
| | - Chan Yu
- School of Energy & Environmental Engineering, University of Science and Technology Beijing 30 Xueyuan Road 100083 Beijing China
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