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Shih YJ, Dong CD, Huang YH, Huang CP. Electro-sorption of ammonium ion onto nickel foam supported highly microporous activated carbon prepared from agricultural residues (dried Luffa cylindrica). THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 673:296-305. [PMID: 30991319 DOI: 10.1016/j.scitotenv.2019.04.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
An electrode made of loofah sponge derived activated carbon supported on nickel foam (AC/Ni) was successfully fabricated and used to remove ammonium ion (NH4+) from aqueous solution. A multilayer adsorption isotherm was used to describe ammonium electro-sorption on AC/Ni electrodes at different temperature, initial NH4+ concentration, and electrical field. The cyclic voltammetry (CV) results suggested that the electrical capacitance of AC/Ni electrodes, with the AC being prepared without preheating (OAC) or with low temperature heating (i.e., 300 AC), were higher than those prepared at high preheating temperature (i.e., 400 AC and 500 AC). Increasing the electro-sorption temperature from 10 to 50 °C decreased the monolayer NH4+ adsorption capacity from 5 to ca. 2-3 mg-N g-1, respectively. Background electrolyte, namely, sodium sulfate, exhibited significant competitive effect on the adsorption of ammonium ion at sodium ion concentration > 10-2 M. The activation energy and heat of adsorption were 9-23.2 kJ mol-1 and -3.7--10.7 kJ mol-1, respectively, indicating a physisorption and exothermic adsorption characteristics. Based on the kinetics and thermodynamics analysis, there was slight increase in the activation energy with elevating preheating temperature, which increased the quantity of micro-pores and surface heterogeneity of the AC materials. Overall, results clearly demonstrated that carbon pyrolysis played a role on the capacitive charging behaviors of electrodes and the efficiency of NH4+ electro-sorption on the AC/Ni electrodes.
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Affiliation(s)
- Yu-Jen Shih
- Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan.
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan
| | - Yao-Hui Huang
- Department of Chemical Engineering, National Cheng-Kung University, Tainan 701, Taiwan
| | - C P Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, DE 19716, USA.
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Masibi KK, Fayemi OE, Adekunle AS, Sherif ESM, Ebenso EE. Electrocatalysis of Lindane Using Antimony Oxide Nanoparticles Based-SWCNT/PANI Nanocomposites. Front Chem 2018; 6:423. [PMID: 30298128 PMCID: PMC6160894 DOI: 10.3389/fchem.2018.00423] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 08/24/2018] [Indexed: 11/24/2022] Open
Abstract
This work describes the chemical synthesis of antimony oxide nanoparticles (AONPs), polyaniline (PANI), acid functionalized single-walled carbon nanotubes (fSWCNTs), and the nanocomposite (AONP-PANI-SWCNT) as catalyst for the trace detection of lindane. Successful synthesis of the nanomaterials was confirmed by Fourier transform infrared (FT-IR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, x-ray diffraction (XRD) spectroscopy, and scanning electron microscopy (SEM). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were used for investigating the electrochemical behavior of the modified electrodes in the ferrocyanide/ferricyanide ([Fe(CN)6]4−/[Fe(CN)6]3−) redox probe. GCE-AONP-PANI-SWCNT exhibited faster electron transport properties as well as higher electroactivity as compared to bare-GCE, GCE-AONPs, GCE-PANI, and GCE-SWCNT electrodes. Electrocatalytic studies further showed that GCE-AONP-PANI-SWCNT modified electrode was stable (after 20 scans) with only a small current drop in lindane (0.57%). The GCE-AONP-PANI-SWCNT electrode with low detection limit of 2.01 nM performed better toward the detection of lindane as compared to other studies in literature. The GCE-AONP-PANI-SWCNT electrode is highly selective toward the detection of lindane in the presence of various organic and inorganic interfering species. Real sample analysis of river water and tap water samples using the developed sensor gave satisfactory percentage recoveries therefore confirming the potential of the proposed sensor for practical application.
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Affiliation(s)
- Kgotla K Masibi
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa.,Material Science Innovation and Modelling Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
| | - Omolola E Fayemi
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa.,Material Science Innovation and Modelling Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
| | - Abolanle S Adekunle
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa.,Material Science Innovation and Modelling Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa.,Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - El-Sayed M Sherif
- Center of Excellence for Research in Engineering Materials, King Saud University, Al-Riyadh, Saudi Arabia.,Electrochemistry and Corrosion Laboratory, Department of Physical Chemistry, National Research Centre, Cairo, Egypt
| | - Eno E Ebenso
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa.,Material Science Innovation and Modelling Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
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Bolbukh Y, Podkoscielna B, Lipke A, Bartnicki A, Gawdzik B, Tertykh V. Immobilization of Polymeric Luminophor on Nanoparticles Surface. NANOSCALE RESEARCH LETTERS 2016; 11:206. [PMID: 27090657 PMCID: PMC4835396 DOI: 10.1186/s11671-016-1410-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 04/04/2016] [Indexed: 06/05/2023]
Abstract
Polymeric luminophors with reduced toxicity are of the priorities in the production of lighting devices, sensors, detectors, bioassays or diagnostic systems. The aim of this study was to develop a method of immobilization of the new luminophor on a surface of nanoparticles and investigation of the structure of the grafted layer. Monomer 2,7-(2-hydroxy-3-methacryloyloxypropoxy)naphthalene (2,7-NAF.DM) with luminophoric properties was immobilized on silica and carbon nanotubes in two ways: mechanical mixing with previously obtained polymer and by in situ oligomerization with chemisorption after carrier's modification with vinyl groups. The attached polymeric (or oligomeric) surface layer was studied using thermal and spectral techniques. Obtained results confirm the chemisorption of luminophor on the nanotubes and silica nanoparticles at the elaborated synthesis techniques. The microstructure of 2,7-NAF.DM molecules after chemisorption was found to be not changed. The elaborated modification approach allows one to obtain nanoparticles uniformly covered with polymeric luminophor.
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Affiliation(s)
- Yuliia Bolbukh
- />Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17 General Naumov Str., 03164 Kyiv, Ukraine
| | - Beata Podkoscielna
- />Faculty of Chemistry, Maria Curie-Skłodowska University, pl. Maria Curie-Skłodowskiej 3, 2-031 Lublin, Poland
| | - Agnieszka Lipke
- />Faculty of Chemistry, Maria Curie-Skłodowska University, pl. Maria Curie-Skłodowskiej 3, 2-031 Lublin, Poland
| | - Andrzej Bartnicki
- />Faculty of Chemistry, Maria Curie-Skłodowska University, pl. Maria Curie-Skłodowskiej 3, 2-031 Lublin, Poland
| | - Barbara Gawdzik
- />Faculty of Chemistry, Maria Curie-Skłodowska University, pl. Maria Curie-Skłodowskiej 3, 2-031 Lublin, Poland
| | - Valentin Tertykh
- />Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 17 General Naumov Str., 03164 Kyiv, Ukraine
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Ji T, Chen L, Mu L, Zhu J. Molecular Transformation, Diffusion, and Assembling into Three-Dimensional Freestanding Tube Arrays via a Triphasic Reaction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11525-11531. [PMID: 27748115 DOI: 10.1021/acs.langmuir.6b03418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Converting nitrobenzene to freestanding polyaniline tube arrays has been successfully carried out in a "water-oil-water" triphasic reaction system, where catalytic reduction of nitrobenzene to aniline and aniline polymerization reactions were synergistically integrated. With optimized control over molecular diffusion and reaction at separate solid/liquid and liquid/liquid interfaces, polyaniline nanostructures could be synthesized with different morphologies. The paired molecular diffusion and reaction rate is revealed as the dominating factor that determines the feasibility of the reaction system to produce a patterned array structure. Slow molecular diffusion leads to a better ordered three-dimensional (3D) assembling structure. This work demonstrates a new approach to control 3D assembling structures with integrated control on diffusion and reaction across multiple liquid/liquid interfaces.
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Affiliation(s)
- Tuo Ji
- Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
| | - Long Chen
- Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
| | - Liwen Mu
- Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
| | - Jiahua Zhu
- Intelligent Composites Laboratory, Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
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Lin W, Xu K, Peng J, Xing Y, Gao S, Ren Y, Chen M. Polynaphthoxazine-based 1D carbon nano-materials: electrospun fabrication, characterization and electrochemical properties. Polym Chem 2016. [DOI: 10.1039/c6py01229a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Polynaphthoxazine-based 1D carbon nano-materials were fabricated by a single-nozzle electrospinning process in a mixed polymer solution followed by curing and carbonization.
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Affiliation(s)
- Weihong Lin
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- People's Republic of China
| | - Kai Xu
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- People's Republic of China
| | - Jun Peng
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- People's Republic of China
| | - Yuxiu Xing
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- People's Republic of China
| | - Shuxi Gao
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- People's Republic of China
| | - Yuanyuan Ren
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- People's Republic of China
| | - Mingcai Chen
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- People's Republic of China
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