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Chandrabose V, Kim T, Park JW, Jung SY, Oh JM. Effect of Tetrahedrally Coordinated Al on the Surface Acidity of Mg-Al Binary Mixed Oxides. Molecules 2023; 28:6072. [PMID: 37630324 PMCID: PMC10459910 DOI: 10.3390/molecules28166072] [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: 06/30/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Metal oxides (MOs) having Mg and Al with Mg/Al ratios of 1, 2, 3, and 4 were synthesized via calcination of the layered double hydroxides (LDH). The X-ray diffraction analysis revealed that all the MO consisted of periclase (MgO) crystallite with comparable crystallinity regardless of the metal ratio. According to the 27Al magic-angle spinning nuclear magnetic resonance, the phase transformation from LDH to MO upon calcination facilitated the evolution of the Al3+ ions with unsaturated coordination at the surface of MO. The specific surface area values of MOs were not significantly different from each other, ranging between 100 and 200 m2/g, suggesting that the metal ratio did not strongly influence the porous structure of MO. The temperature-dependent desorption of ammonia demonstrated that the Lewis acidity of the Al-rich MOs was the largest with an Mg/Al ratio of 1, attributed to the efficient exposure of the surface-active site Al3+-O2- pairs. The acidity of heterogenous Al-rich MOs significantly increased with the exposed tetrahedral Al site on the surface and dramatically diminished when the molar ratio (Mg/Al) was over two.
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Affiliation(s)
- Vidya Chandrabose
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
| | - Taeho Kim
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
| | - Ji won Park
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
- Developing Product Quality Innovation Team, LG Display, Paju 10845, Republic of Korea
| | - Sang-Yong Jung
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
- SN Bioscience, 422-Na, LH Business Growth Center, 54 Changeop-ro, Sujeong-gu, Seongnam-si 13449, Republic of Korea
| | - Jae-Min Oh
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
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Bashar MA, Molla MTH, Chandra D, Malitha MD, Islam MS, Rahman MS, Ahsan MS. Hydrothermal synthesis of cobalt substitute zinc-ferrite (Co 1-xZn xFe 2O 4) nanodot, functionalised by polyaniline with enhanced photocatalytic activity under visible light irradiation. Heliyon 2023; 9:e15381. [PMID: 37096001 PMCID: PMC10122038 DOI: 10.1016/j.heliyon.2023.e15381] [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: 12/27/2022] [Revised: 04/05/2023] [Accepted: 04/05/2023] [Indexed: 04/26/2023] Open
Abstract
Fabrication and development of effective visible-light-responsive photocatalysts are required to tackle critical environmental issues. The aim of this study was to develop a nanocomposite material with improved photocatalytic activity for the degradation of industrial dyes such as Reactive Orange-16 (RO-16), Reactive Blue (RB-222), Reactive Yellow-145 (RY-145), and Disperse Red-1 (DR-1) without the need for a post-separation process after use. Here we report the hydrothermal synthesis of nanodots of Co1-xZnxFe2O4 (x = 0.3, 0.5 and 0.7), coated with polyaniline, by in situ polymerization. The Co1-xZnxFe2O4 nanodots, coated with polyaniline (PANI) nanograins, facilitated optical properties by easily capturing visible light. X-ray Diffraction (XRD) patterns and Scanning Electron Microscopy (SEM) images have confirmed the single-phase spinel structure of Co1-xZnxFe2O4 nanodot and nano-pore size of the Co1-xZnxFe2O4/PANI nanophotocatalyst. The specific surface area of the Brunauer-Emmett-Teller (BET) of the Co1-xZnxFe2O4/PANI photocatalyst was determined to be 24.50 m2/g by multipoint analysis. The final Co1-xZnxFe2O4/PANI (x = 0.5) nanophotocatalyst showed high efficiency in the catalytic degradation of toxic dyes (∼98% within 5 min), with good mechanical stability and recyclability under visible light irradiation. The nanophotocatalyst was re-used and its efficiency was largely maintained, even after seven cycles (∼82%) of degradation. The effects of various parameters, such as initial dye concentration, nanophotocatalyst concentration, initial pH of dye solution, and reaction kinetics were studied. According to the Pseudo-first-order kinetic model, photodegradation data followed the first-order reaction rate (R2 > 0.95) of degradation of dyes. In conclusion, a simple and low-cost synthesis process, speedy degradation and excellent stability of polyaniline-coated Co1-xZnxFe2O4 nanophotocatalyst could be used as a promising photocatalyst for dye-wastewater treatment.
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Affiliation(s)
- Md Abul Bashar
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Tamzid Hossain Molla
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Dipesh Chandra
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Dipu Malitha
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | - Md Suman Islam
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
| | | | - Md Shameem Ahsan
- Department of Applied Chemistry and Chemical Engineering, University of Rajshahi, Rajshahi, 6205, Bangladesh
- Corresponding author.
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Mallakpour S, Radfar Z, Feiz M. Chitosan/tannic acid/ZnFe layered double hydroxides and mixed metal oxides nanocomposite for the adsorption of reactive dyes. Carbohydr Polym 2023; 305:120528. [PMID: 36737213 DOI: 10.1016/j.carbpol.2022.120528] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/14/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023]
Abstract
The fabrication of the environmentally friendly nanocomposite beads containing chitosan (Chi), tannic acid (TA), layered double hydroxides (LDH), and mixed metal oxides (MMO) was carried out. The synthesized ZnFe LDH, ZnFe MMO, and fabricated beads (Chi/TA@LDH and Chi/TA@MMO) were characterized using FESEM, XRD, FTIR, BET, and TGA. The beads were applied for the simultaneous removal of three reactive dyes. The design of experiments was based on a full factorial design considering the effect of six independent variables (initial dye concentrations, adsorbent dosage, time, and adsorbent type) on the dye removal percentages (DR%) of each dye. Regression equations were extracted from the experimental results (R2 > 0.983) and high obtained F-values from analysis of variance (ANOVA) proved the significance of the models. The maximum adsorption capacity of the dyes onto, Chi/TA@LDH and Chi/TA@MMO beads were between 257 and 483 mg g-1. The spontaneity and exothermic nature of the adsorption processes were determined by thermodynamic studies (-8 < ΔH° (KJ mol-1) < -1, -22 < ΔG° (KJ mol-1) < -18). Reusability studies showed that the fabricated beads could be regenerated and applied several times.
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Affiliation(s)
- Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
| | - Zeinab Radfar
- Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran
| | - Mahmoud Feiz
- Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
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GadelHak Y, Salama E, Abd-El Tawab S, Mouhmed EA, Alkhalifah DHM, Hozzein WN, Mohaseb M, Mahmoud RK, Amin RM. Waste Valorization of a Recycled ZnCoFe Mixed Metal Oxide/Ceftriaxone Waste Layered Nanoadsorbent for Further Dye Removal. ACS OMEGA 2022; 7:44103-44115. [PMID: 36506177 PMCID: PMC9730514 DOI: 10.1021/acsomega.2c05528] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 11/08/2022] [Indexed: 05/14/2023]
Abstract
Waste valorization of spent wastewater nanoadsorbents is a promising technique to support the circular economy strategies. The terrible rise of heavy metal pollution in the environment is considered a serious threat to the terrestrial and aquatic environment. This led to the necessity of developing cost-effective, operation-convenient, and recyclable adsorbents. ZnCoFe mixed metal oxide (MMO) was synthesized using co-precipitation. The sample was characterized using X-ray powder diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. Factors affecting the adsorption process such as pH, the dose of adsorbent, and time were investigated. ZnCoFe MMO showed the maximum adsorption capacity of 118.45 mg/g for ceftriaxone sodium. The spent MMO was recycled as an adsorbent for malachite green (MG) removal. Interestingly, the spent adsorbent showed 94% removal percent for MG as compared to the fresh MMO (90%). The kinetic investigation of the adsorption process was performed and discussed. In addition, ZnCoFe MMO was tested as an antimicrobial agent. The proposed approach opens up a new avenue for recycling wastes after adsorption into value-added materials for utilization in adsorbent production with excellent performance as antimicrobial agents.
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Affiliation(s)
- Yasser GadelHak
- Department
of Materials Science and Nanotechnology, Faculty of Postgraduate Studies
for Advanced Sciences, Beni-Suef University, Beni-Suef62511, Egypt
| | - Esraa Salama
- Chemistry
Department, Faculty of Sciences. Beni-Suef
University. Beni-Suef62511, Egypt
| | - Samah Abd-El Tawab
- Food
Science and Technology Department, Faculty of Agriculture, Fayoum University, Fayoum63514, Egypt
| | - Eman Abouzied Mouhmed
- Food
Science and Technology Department, Faculty of Agriculture, Fayoum University, Fayoum63514, Egypt
| | - Dalal Hussien M. Alkhalifah
- Department
of Biology, College of Science, Princess
Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh11671, Saudi Arabia
| | - Wael N. Hozzein
- Botany
and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef62511, Egypt
| | - Mona Mohaseb
- Physics Department,
Faculty of Science, Beni-Suef University, Beni-Suef62511, Egypt
- Department
of Physics, Faculty of Applied Sciences, Umm-Al-Qura University, Mecca21421, Saudi Arabia
| | - Rehab K. Mahmoud
- Chemistry
Department, Faculty of Sciences. Beni-Suef
University. Beni-Suef62511, Egypt
| | - Rafat M. Amin
- Physics Department,
Faculty of Science, Beni-Suef University, Beni-Suef62511, Egypt
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Development of Mesopore Structure of Mixed Metal Oxide through Albumin-Templated Coprecipitation and Reconstruction of Layered Double Hydroxide. NANOMATERIALS 2021; 11:nano11030620. [PMID: 33801502 PMCID: PMC7999424 DOI: 10.3390/nano11030620] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/16/2021] [Accepted: 02/25/2021] [Indexed: 01/27/2023]
Abstract
Mixed metal oxide (MMO) with relatively homogeneous mesopores was successfully obtained by calcination and reconstruction of albumin-templated layered double hydroxide (LDH). The aggregation degree of albumin-template was controlled by adjusting two different synthesis routes, coprecipitation and reconstruction. X-ray diffraction patterns and scanning electron microscopic images indicated that crystal growth of LDH was fairly limited during albumin-templated coprecipitation due to the aggregation. On the hand, crystal growth along the lateral direction was facilitated in albumin-templated reconstruction due to the homogeneous distribution of proteins moiety. Different state of albumin during LDH synthesis influenced the local disorder and porous structure of calcination product, MMO. The N2 adsorption-desorption isotherms demonstrated that calcination on reconstructed LDH produced MMO with large specific surface area and narrow distribution of mesopores compared with calcination of coprecipitated LDH.
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Zhang H, Qin J, Gao Z, Meng Q, He G, Chen H. Magnetically separable graphene-based Ni–Fe mixed metal oxide nanocubes derived from a Prussian- blue analogue: synthesis, structure and application in oxidative degradation of bisphenol A. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01827a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mixed metal oxide (MMO) nanocubes were prepared by calcining a Ni–Fe Prussian-blue analogue (Ni–Fe PBA) and then uniformly supported on reduced graphene oxide (RGO) through a simple hydrothermal reaction instead of the commonly used etching.
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Affiliation(s)
- Hao Zhang
- Key Laboratory of Advanced Catalytic Materials and Technology
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Changzhou University
- Changzhou
- China
| | - Jingyu Qin
- Key Laboratory of Advanced Catalytic Materials and Technology
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Changzhou University
- Changzhou
- China
| | - Zhifeng Gao
- Key Laboratory of Advanced Catalytic Materials and Technology
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Changzhou University
- Changzhou
- China
| | - Qi Meng
- Key Laboratory of Advanced Catalytic Materials and Technology
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Changzhou University
- Changzhou
- China
| | - Guangyu He
- Key Laboratory of Advanced Catalytic Materials and Technology
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Changzhou University
- Changzhou
- China
| | - Haiqun Chen
- Key Laboratory of Advanced Catalytic Materials and Technology
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center
- Changzhou University
- Changzhou
- China
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