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Fan W, Liu C, Wang H, Wu J, Chen S, Fang W, Wu C, Quan Y, Wang D, Qi Y. FeCoNi molybdenum-based oxides for efficient electrocatalytic oxygen evolution reaction. J Colloid Interface Sci 2024; 662:460-470. [PMID: 38364471 DOI: 10.1016/j.jcis.2024.02.104] [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: 12/16/2023] [Revised: 02/08/2024] [Accepted: 02/12/2024] [Indexed: 02/18/2024]
Abstract
The search for highly efficient and inexpensive electrocatalysts is crucial to the advancement of environmentally friendly and sustainable energy sources. Here, adopting a one-step hydrothermal method, we have effectively fabricated a self-supported multi-metal molybdenum-based oxide (FeCoNi-MoO4) on nickel foam (NF). In addition to changing the catalyst's microstructure, the introducing of Fe and Co, enhanced its active center count, improved its electronic structure, and in turn reduced the difficulty for high-valence Ni and Fe species to form, which accelerates the oxygen evolution reaction (OER) kinetics by promoting the development of the actual active materials, NiOOH and FeOOH. FeCoNi-MoO4 has outstanding OER performance, requiring just 204 mV overpotentials at 10 mA cm-2 and 271 mV at 100 mA cm-2. Its exceptional OER kinetics at both low and high currents are indicated by a Tafel slope of 50.6 mV dec-1, which is attributed to the combined effect of its multi-metal composition and a higher number of active sites. Moreover, the FeCoNi-MoO4 electrode was operated continuously for over 48 h. Furthermore, the density functional theory (DFT) results demonstrated that the introducing of Fe and Co, which quickens the rate of electron transfer during the electrocatalytic process, improves the ability of oxygen intermediate species to adsorb, and ultimately lowers the overpotential, is responsible for the increased electrocatalytic activity of FeCoNi-MoO4. This work offers hope for further developments in the sector by proposing an efficient approach for creating multi-active electrocatalysts that are stable, economical, and efficient.
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Affiliation(s)
- Weikai Fan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Chaofan Liu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Hairong Wang
- Shanghai Special Equipment Supervision and Inspection Technology Research Institute, Shanghai 200333, China
| | - Jiang Wu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China.
| | - Sheng Chen
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Weijie Fang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Chenyu Wu
- College of Electric Power Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Yuyue Quan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Daolei Wang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China.
| | - Yongfeng Qi
- College of Electrical, Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China.
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2
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Wang M, Zhang Q, Wang Y, Liu X. Boosting the Catalytic Performance of NiMoO 4 Nanorods in H 2 Generation upon NH 3BH 3 Hydrolysis via a Reduction Process. Inorg Chem 2023; 62:17555-17564. [PMID: 37822237 DOI: 10.1021/acs.inorgchem.3c03068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Although a range of noble metal catalysts, including Ru, Rh, Pd, Pt, and Au, have been developed for efficient H2 generation upon NH3BH3 hydrolysis at room temperature, this is a highly urgent need for exploring earth-abundant metal nanocatalysts for H2 generation upon NH3BH3 hydrolysis. Herein, a NaBH4 reduction strategy was developed to boost the catalytic performance of NiMoO4 nanorods in H2 generation upon NH3BH3 hydrolysis. Indeed, the pristine NiMoO4 nanorods were catalytically inert in NH3BH3 hydrolysis. Significantly, the reduced NiMoO4 nanorods presented excellent catalytic activity in H2 generation upon NH3BH3 hydrolysis, with a turnover frequency (TOF) of 31.2 L(H2)·gcat-1·h-1. Interestingly, the TOF of NH3BH3 hydrolysis over reduced NiMoO4 nanorods significantly increased from 31.2 to 53.6 L(H2)·gcat-1·h-1 under 0.3 M NaOH. The boosting catalytic performance of NiMoO4 nanorods via NaBH4 reduction in H2 generation might be attributed to the higher content of Oads and the formation of nickel boride in the reduced NiMoO4 nanorods. In this work, NH3BH3 hydrolysis over reduced NiMoO4 nanorods was not only used for safe H2 generation but also for its in situ tandem hydrogenation in organic chemistry.
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Affiliation(s)
- Miaomiao Wang
- Department of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Qing Zhang
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
| | - Yanlan Wang
- Department of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Xiang Liu
- Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education, College of Materials and Chemical Engineering, China Three Gorges University, Yichang, Hubei 443002, China
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3
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Cao J, Huang W, Wang Y, Zhang Q, Liu X. Dehydrogenation of N2H4·H2O over NiMoO4 Nanorods-Stabilized NiPt Bimetal Nanoparticles for On-demand H2 Evolution. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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Yousefipour K, Sarraf-Mamoory R, Mollayousefi S. Synthesis of manganese molybdate/MWCNT nanostructure composite with a simple approach for supercapacitor applications. RSC Adv 2022; 12:27868-27876. [PMID: 36320277 PMCID: PMC9520677 DOI: 10.1039/d2ra04691a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/15/2022] [Indexed: 01/07/2023] Open
Abstract
Recently, magnesium molybdate materials have attracted scientific attention for application in supercapacitor devices due to advantages like low synthesis cost and good redox reactions. Nevertheless, these materials endure low electrical conductivity leading to inferior electrochemical performance. To eliminate this drawback, we prepare a composite powder containing magnesium molybdate and functionalized carbon nanotubes (MMO/C) using a simple process to improve the supercapacitive properties. The results proved an electrostatic interaction between the two components of the composite powder, which contains 18-30 nm magnesium molybdate nanoparticles. A crystal model related to magnesium molybdate powder (MMO) was simulated, illustrating that MnO6 octahedra are formed next to MoO4 tetrahedra. The mesoporous structure of both powders was confirmed whereas the specific surface area of the MMO was enhanced by 69.9% to 36.86 m2 g-1 in the MMO/C powder with more electroactive sites. The higher electrical conductivity of the MMO/C electrode was proved using electrochemical impedance spectroscopy (EIS) results, with the MMO/C electrode achieving a specific capacitance of 571 F g-1 at 1 A g-1 current density, improved by more than 4.5 times that of the MMO. Furthermore, the rate performance and cycling stability of the MMO/C electrode reached 87% and 85.2%, respectively. Finally, a two-electrode energy storage device (MMO/C//AC) was assembled. It reveals a specific capacitance of 94.7 F g-1, a maximum energy density of 29.6 W h kg-1 at a power density of 660.1 W kg-1, and cycling performance of 84.3% after 2000 cycles. As a result, the resulting data demonstrate that the MMO/C electroactive material has promising abilities in capacitive energy storage systems.
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Affiliation(s)
- Kian Yousefipour
- Department of Materials Engineering, Tarbiat Modares UniversityTehranIran
| | | | - Shadi Mollayousefi
- Department of Materials Engineering, Tarbiat Modares UniversityTehranIran
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5
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Ruthenium and Nickel Molybdate-Decorated 2D Porous Graphitic Carbon Nitrides for Highly Sensitive Cardiac Troponin Biosensor. BIOSENSORS 2022; 12:bios12100783. [PMID: 36290921 PMCID: PMC9599711 DOI: 10.3390/bios12100783] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/13/2022] [Accepted: 09/19/2022] [Indexed: 12/14/2022]
Abstract
Two-dimensional (2D) layered materials functionalized with monometallic or bimetallic dopants are excellent materials to fabricate clinically useful biosensors. Herein, we report the synthesis of ruthenium nanoparticles (RuNPs) and nickel molybdate nanorods (NiMoO4 NRs) functionalized porous graphitic carbon nitrides (PCN) for the fabrication of sensitive and selective biosensors for cardiac troponin I (cTn-I). A wet chemical synthesis route was designed to synthesize PCN-RuNPs and PCN-NiMoO4 NRs. Morphological, elemental, spectroscopic, and electrochemical investigations confirmed the successful formation of these materials. PCN-RuNPs and PCN-NiMoO4 NRs interfaces showed significantly enhanced electrochemically active surface areas, abundant sites for immobilizing bioreceptors, porosity, and excellent aptamer capturing capacity. Both PCN-RuNPs and PCN-NiMoO4 NRs materials were used to develop cTn-I sensitive biosensors, which showed a working range of 0.1–10,000 ng/mL and LODs of 70.0 pg/mL and 50.0 pg/mL, respectively. In addition, the biosensors were highly selective and practically applicable. The functionalized 2D PCN materials are thus potential candidates to develop biosensors for detecting acute myocardial infractions.
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6
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Supercapacitive performance of Fe-doped nickel molybdate/rGO hybrids: The effect of rGO. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Hakimyfard A, Samimifar M, Ostadjoola S, Khademinia S, Kafi‐Ahmadi L. L
x
‐β‐NiMoO
4
(L = None, Al, V, Fe, Co) Nanocomposites: Facile Solid‐State Synthesis, Magnetic, Optical, and Electrochemical Properties. CRYSTAL RESEARCH AND TECHNOLOGY 2022. [DOI: 10.1002/crat.202200044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alireza Hakimyfard
- Department of Physics, Faculty of Science Jundi‐Shapur University of Technology Dezful 64617‐96736 Iran
| | - Mohammad Samimifar
- Department of Chemistry, Faculty of Science Jundi‐Shapur University of Technology Dezful 64617‐96736 Iran
| | - Soroor Ostadjoola
- Department of Physics, Faculty of Science Jundi‐Shapur University of Technology Dezful 64617‐96736 Iran
| | - Shahin Khademinia
- Department of Inorganic Chemistry, Faculty of Chemistry Semnan University Semnan 35131‐ 19111 Iran
| | - Leila Kafi‐Ahmadi
- Department of Inorganic Chemistry, Faculty of Chemistry Urmia University Urmia 57561‐51818 Iran
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8
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Study on Extraction and Antioxidant Activity of Flavonoids from Hemerocallis fulva (Daylily) Leaves. Molecules 2022; 27:molecules27092916. [PMID: 35566266 PMCID: PMC9104616 DOI: 10.3390/molecules27092916] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/29/2022] [Accepted: 05/02/2022] [Indexed: 11/16/2022] Open
Abstract
Hemerocallis fulva is a medical and edible plant. In this study, we optimized the ultrasound-assisted extraction (UAE) process of extracting flavonoids from Hemerocallis fulva leaves by single-factor experiments and response surface methodology (RSM). The optimum extraction conditions generating the maximal total flavonoids content was as follows: 70.6% ethanol concentration; 43.9:1 mL/g solvent to sample ratio; 61.7 °C extraction temperature. Under the optimized extraction conditions, the total flavonoid content (TFC) in eight Hemerocallis fulva varieties were determined, and H. fulva (L.) L. var. kwanso Regel had the highest TFC. The cytotoxicity of the extract was studied using the Cell Counting Kit-8 (CCK-8 assay). When the concentration was less than 1.25 mg/mL, the extract had no significant cytotoxicity to HaCaT cells. The antioxidant activity was measured via chemical antioxidant activity methods in vitro and via cellular antioxidant activity methods. The results indicated that the extract had a strong ABTS and •OH radical scavenging activity. Additionally, the extract had an excellent protective effect against H2O2-induced oxidative damage at a concentration of 1.25 mg/mL, which could effectively reduce the level of ROS to 106.681 ± 9.733% (p < 0.001), compared with the 163.995 ± 6.308% of the H2O2 group. We identified five flavonoids in the extracts using high-performance liquid chromatography (HPLC). Infrared spectroscopy indicated that the extract contained the structure of flavonoids. The results showed that the extract of Hemerocallis fulva leaves had excellent biocompatibility and antioxidant activity, and could be used as a cheap and potential source of antioxidants in the food, cosmetics, and medicine industries.
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10
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Highly Efficient Methylene Blue Dye Removal by Nickel Molybdate Nanosorbent. Molecules 2021; 26:molecules26051378. [PMID: 33806498 PMCID: PMC7961506 DOI: 10.3390/molecules26051378] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/24/2021] [Accepted: 02/27/2021] [Indexed: 11/17/2022] Open
Abstract
Removing methylene blue (MB) dye from aqueous solutions was examined by the use of nickel molybdate (α-NiMoO4) as an adsorbent produced by an uncomplicated, rapid, and cost-effective method. Different results were produced by varying different parameters such as the pH, the adsorbent dose, the temperature, the contact time, and the initial dye concentration. Adsorbent dose and pH had a major removal effect on MB. Interestingly, a lower amount of adsorbent dose caused greater MB removal. The amount of removal gained was efficient and reached a 99% level with an initial methylene blue solution concentration of ≤160 ppm at pH 11. The kinetic studies indicated that the pseudo-second-order kinetic model relates very well with that of the obtained experimental results. The thermodynamic studies showed that removing the MB dye was favorable, spontaneous, and endothermic. Impressively, the highest quantity of removal amount of MB dye was 16,863 mg/g, as shown by the Langmuir model. The thermal regeneration tests revealed that the efficiency of removing MB (11,608 mg/g) was retained following three continuous rounds of recycled adsorbents. Adsorption of MB onto α-NiMoO4 nanoparticles and its regeneration were confirmed by Fourier transform infrared spectroscopy (FTIR) analysis and scanning electron microscopy (SEM) analysis. The results indicated that α-NiMoO4 nanosorbent is an outstanding and strong candidate that can be used for removing the maximum capacity of MB dye in wastewater.
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11
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Stenzel D, Issac I, Wang K, Azmi R, Singh R, Jeong J, Najib S, Bhattacharya SS, Hahn H, Brezesinski T, Schweidler S, Breitung B. High Entropy and Low Symmetry: Triclinic High-Entropy Molybdates. Inorg Chem 2021; 60:115-123. [PMID: 33314913 DOI: 10.1021/acs.inorgchem.0c02501] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Metal molybdates constitute a promising class of materials with a wide application range. Here, we report, to our knowledge for the first time, on the preparation and characterization of medium-entropy and high-entropy metal molybdates, synthesized by an oxalate-based coprecipitation approach. The high-entropy molybdate crystallizes in a triclinic structure, thus rendering it as high-entropy material with the lowest symmetry reported so far. This is noteworthy because high-entropy materials usually tend to crystallize into highly symmetrical structures. It is expected that application of the high-entropy concept to metal molybdates alters the material's characteristics and adds the features of high-entropy systems, that is, tailorable composition and properties. The phase purity and solid solution nature of the molybdates were confirmed by XRD, Raman spectroscopy, TEM, XPS, and ICP-OES.
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Affiliation(s)
- David Stenzel
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ibrahim Issac
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Kai Wang
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Raheleh Azmi
- Institute for Applied Materials - Energy Storage Systems, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ruby Singh
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Jaehoon Jeong
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Saleem Najib
- Faculty of Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Subramshu S Bhattacharya
- Department of Metallurgical and Materials Engineering, Nano Functional Materials Technology Centre (NFMTC), Indian Institute of Technology Madras, Chennai 600036, India
| | - Horst Hahn
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.,Joint Research Laboratory Nanomaterials, Technical University Darmstadt, Otto-Berndt-Strasse 3, 64206 Darmstadt, Germany.,Helmholtz Institute Ulm for Electrochemical Energy Storage, Helmholtzstrasse 11, 89081 Ulm, Germany
| | - Torsten Brezesinski
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Simon Schweidler
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ben Breitung
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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12
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Jayabalan T, Matheswaran M, Radhakrishnan TK, Naina Mohamed S. Influence of Nickel molybdate nanocatalyst for enhancing biohydrogen production in microbial electrolysis cell utilizing sugar industrial effluent. BIORESOURCE TECHNOLOGY 2021; 320:124284. [PMID: 33137640 DOI: 10.1016/j.biortech.2020.124284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 05/13/2023]
Abstract
Biohydrogen production in Microbial Electrolysis Cell (MEC) had inspired the researchers to overcome the challenges associated towards sustainability. Despite microbial community and various substrates, economical cathode catalyst development is most significant factor for enhancing hydrogen production in the MEC. Hence, in this study, the performance of MEC was investigated with a sugar industry effluent (COD 4200 ± 20 mg/L) with graphite anode and modified Nickel foam (NF) cathode. Nickel molybdate (NiMoO4) coated NF achieved a higher hydrogen production rate 0.12 ± 0.01 L.L-1D-1 as compared to control under favorable conditions. Electrochemical characterizations demonstrated that the improved catalytic activity of novel nanocatalyst with lower impedance favoring faster hydrogen evolution kinetics. The MEC with the novel catalyst performed with 58.2% coloumbic efficiency, 20.36% cathodic hydrogen recovery, 11.96% overall hydrogen recovery and 54.38% COD removal efficiency for a 250 mL substrate during 5 days' batch cycle. Hence, the potentiality of modified cathode was established with the real time industrial effluent highlighting the waste to wealth bio-electrochemical technology.
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Affiliation(s)
- Tamilmani Jayabalan
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
| | - Manickam Matheswaran
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
| | - T K Radhakrishnan
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
| | - Samsudeen Naina Mohamed
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India.
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13
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Iron Molybdate Fe 2(MoO 4) 3 Nanoparticles: Efficient Sorbent for Methylene Blue Dye Removal from Aqueous Solutions. Molecules 2020; 25:molecules25215100. [PMID: 33153124 PMCID: PMC7663641 DOI: 10.3390/molecules25215100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/24/2020] [Accepted: 10/30/2020] [Indexed: 02/07/2023] Open
Abstract
The present study investigated iron molybdate (Fe2(MoO4)3), synthesized via a simple method, as a nanosorbent for methylene blue (MB) dye removal from aqueous solutions. Investigations of the effects of several parameters like contact time, adsorbent dose, initial dye concentration, temperature and pH were carried out. The results showed that MB removal was affected, significantly, by adsorbent dose and pH. Interestingly, lower values of adsorbent dose resulted in the removal of higher amounts of MB. At the optimum pH, the removal efficiency of 99% was gained with an initial MB concentration of ≤60 ppm. The kinetic study specified an excellent correlation of the experimental results with the pseudo-second-order kinetics model. Thermodynamic studies proved a spontaneous, favorable and endothermic removal. The maximum amount of removal capacity of MB dye was 6173 mg/g, which was determined from the Langmuir model. The removal efficiency was shown to be retained after three cycles of reuse, as proven by thermal regeneration tests. The presence and adsorption of the dye onto the Fe2(MoO4)3 nanoparticle surface, as well as the regeneration of the latter, was ascertained by scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR). These findings are indicative that the investigated nanosorbent is an excellent candidate for the removal of MB in wastewater.
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14
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Wu-Hua C, Ji Z, Yu-Fan W. Redetermination of the crystal structure of catena-poly[aqua-(1,10-phenanthroline-κ 2
N, N′)-(μ 2-tetraoxidomolybdato(VI)-κ 2
O: O′)manganese(II) monohydrate, C 12H 12N 2O 6MoMn. Z KRIST-NEW CRYST ST 2020. [DOI: 10.1515/ncrs-2020-0065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C12H12N2O6MoMn, triclinic, P1̄ (no. 2), a = 7.0427(3) Å, b = 10.4459(7) Å, c = 10.5778(6) Å, α = 73.233(6)°, β = 83.372(4)°, γ = 77.340(4)°, V = 725.85(7) Å3, Z = 2, R
gt(F) = 0.0386, wR
ref(F
2) = 0.0916, T = 293(2) K.
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Affiliation(s)
- Chen Wu-Hua
- College of Chemistry and Material Science, Fujian Provincial Colleges and University Engineering Research Center of Solid Waste Resource Utilization (Longyan University), Longyan University , Longyan 364012 , Fujian Province , P.R. China
| | - Zhou Ji
- College of Chemistry and Material Science, Fujian Provincial Colleges and University Engineering Research Center of Solid Waste Resource Utilization (Longyan University), Longyan University , Longyan 364012 , Fujian Province , P.R. China
| | - Wang Yu-Fan
- College of Chemistry and Material Science, Fujian Provincial Colleges and University Engineering Research Center of Solid Waste Resource Utilization (Longyan University), Longyan University , Longyan 364012 , Fujian Province , P.R. China
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15
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Vutolkina A, Glotov A, Baygildin I, Akopyan A, Talanova M, Terenina M, Maximov A, Karakhanov E. Ni–Mo sulfide nanosized catalysts from water-soluble precursors for hydrogenation of aromatics under water gas shift conditions. PURE APPL CHEM 2020. [DOI: 10.1515/pac-2019-1115] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The unsupported catalysts were obtained during hydrogenation by in situ high-temperature decomposition (above 300 °C) of water-soluble metal precursors (ammonium molybdate and nickel nitrate) in water-in-oil (W/O) emulsions stabilized by surfactant (SPAN-80) using elemental sulfur as sulfiding agent. These self-assembly Ni–Mo sulfide nanosized catalysts were tested in hydrogenation of aromatics under CO pressure in water-containing media for hydrogen generation through a water gas shift reaction (WGSR). The composition of the catalysts was determined by XRF and active sulfide phase was revealed by XRD, TEM and XPS techniques. The calculations based on TEM and XPS data showed that the catalysts are highly dispersed. The surfactant was found to affect both dispersion and metal distribution for Ni and Mo species, providing shorter slab length in terms of sulfide particle formation and stacking within high content of NiMoS phase. Catalytic evaluation in hydrogenation of aromatics was performed in a high-pressure batch reactor at T = 380–420 °С, p(CO) = 5 MPa with water content of 20 wt.% and CO/H2O molar ratio of 1.8 for 4–8 h. As shown experimentally with unsupported Ni–Mo sulfide catalysts, the activity of aromatic rings depends on the substituent therein and decreases as follows: anthracene>>1-methylnaphthalene≈2-methylnaphthalene>1,8-dimethylnaphthale-ne>>1,3-di-methylnaphthalene>2,6-dimethylnaphthalene≈2,3-dimethylnaphthalene>2-ethyl-naphthalene. The anthracene conversion reaches up to 97–100% for 4 h over the whole temperature range, while for 1MN and 2MN it doesn’t exceed 92 and 86% respectively even at 420 °С for 8 h. Among dimethyl-substituted aromatics the higher conversion of 45% was achieved for 1,8-dimethylnaphthalene with 100% selectivity to tetralines at 400 °С for 6 h. Similar to 1- and 2-methylnaphtalenes, the hydrogenation of asymmetric dimethyl-substituted substrate carries out through the unsubstituted aromatic ring indicating that steric factors influence on the sorption mechanism over active metal sites. The catalysts were found to be reused for at least six cycles when the hydrogenation is sulfur-assisted preventing metal oxide formation. It was established, that at the first 2–3 h known as the induction period, the oxide catalyst precursors formed slowly by metal salt decomposition, which reveals that it is the rate-determining step. The sulfidation is rather fast based on high catalytic activity data on 2MN conversion retaining at 93–95% upon recycling.
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Affiliation(s)
- Anna Vutolkina
- Faculty of Chemistry, Department of Petroleum Chemistry and Organic Catalysis , Lomonosov Moscow State University , GSP-1, 1-3 Leninskiye Gory, 119991 , Moscow , Russia
| | - Aleksandr Glotov
- Faculty of Chemistry, Department of Petroleum Chemistry and Organic Catalysis , Lomonosov Moscow State University , GSP-1, 1-3 Leninskiye Gory, 119991 , Moscow , Russia
- Faculty of Chemical and Environmental Engineering, Department of Physical and Colloid Chemistry , Gubkin Russian State University of Oil and Gas (NRU) , 65 Leninsky Prospekt, 119991 , Moscow , Russia
| | - Ilnur Baygildin
- Faculty of Chemistry, Department of Petroleum Chemistry and Organic Catalysis , Lomonosov Moscow State University , GSP-1, 1-3 Leninskiye Gory, 119991 , Moscow , Russia
| | - Argam Akopyan
- Faculty of Chemistry, Department of Petroleum Chemistry and Organic Catalysis , Lomonosov Moscow State University , GSP-1, 1-3 Leninskiye Gory, 119991 , Moscow , Russia
| | - Marta Talanova
- Faculty of Chemistry, Department of Petroleum Chemistry and Organic Catalysis , Lomonosov Moscow State University , GSP-1, 1-3 Leninskiye Gory, 119991 , Moscow , Russia
| | - Maria Terenina
- Faculty of Chemistry, Department of Petroleum Chemistry and Organic Catalysis , Lomonosov Moscow State University , GSP-1, 1-3 Leninskiye Gory, 119991 , Moscow , Russia
| | - Anton Maximov
- Faculty of Chemistry, Department of Petroleum Chemistry and Organic Catalysis , Lomonosov Moscow State University , GSP-1, 1-3 Leninskiye Gory, 119991 , Moscow , Russia
- A.V. Topchiev Institute of Petrochemical Synthesis, RAS , GSP-1, 29 Leninsky Prospekt, 119991 , Moscow , Russia
| | - Eduard Karakhanov
- Faculty of Chemistry, Department of Petroleum Chemistry and Organic Catalysis , Lomonosov Moscow State University , GSP-1, 1-3 Leninskiye Gory, 119991 , Moscow , Russia
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Paul A, Dhar SS. Construction of hierarchical MnMoO4/NiFe2O4 nanocomposite: Highly efficient visible light driven photocatalyst in the degradation of different polluting dyes in aqueous medium. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124090] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Han PP, Li J, Xing CL, Zhao M, Han QX, Li MX. Octamolybdate-based hybrids for direct conversion of aldehydes and ketones to oximes. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.107592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Oudghiri-Hassani H, Rakass S, Abboudi M, Mohmoud A, Al Wadaani F. Preparation and Characterization of α-Zinc Molybdate Catalyst: Efficient Sorbent for Methylene Blue and Reduction of 3-Nitrophenol. Molecules 2018; 23:E1462. [PMID: 29914133 PMCID: PMC6100590 DOI: 10.3390/molecules23061462] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/08/2018] [Accepted: 06/15/2018] [Indexed: 11/16/2022] Open
Abstract
Zinc molybdate (ZnMoO₄) was prepared by thermal decomposition of an oxalate complex under a controlled temperature of 500 °C. Analyses of the oxalate complex were carried out using Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). On the other hand, analyses of the synthesized zinc molybdate were carried out by X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller technique (BET). The efficiency of the synthesized catalyst was tested with the reduction reaction of 3-nitrophenol (3-NP), and was also applied as a sorbent for methylene blue dye (MB) in aqueous solutions. The catalytic test of zinc molybdate shows a very high activity. The concentration reduction progress and adsorption of the dye were followed by an ultraviolet-visible (UV-vis) spectrophotometer.
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Affiliation(s)
- Hicham Oudghiri-Hassani
- Chemistry Department, College of Science, Taibah University, Al-Madinah 30002, Saudi Arabia.
- Département Sciences de la Nature, Cégep de Drummondville, 960 rue Saint-Georges, Drummondville, QC J2C 6A2, Canada.
| | - Souad Rakass
- Chemistry Department, College of Science, Taibah University, Al-Madinah 30002, Saudi Arabia.
| | - Mostafa Abboudi
- Chemistry Department, College of Science, Taibah University, Al-Madinah 30002, Saudi Arabia.
| | - Ahmed Mohmoud
- Chemistry Department, College of Science, Taibah University, Al-Madinah 30002, Saudi Arabia.
| | - Fahd Al Wadaani
- Chemistry Department, College of Science, Taibah University, Al-Madinah 30002, Saudi Arabia.
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