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Wang E, Huang T, Wu Q, Huang L, Kong D, Wang H. Influence of Hydrothermal Modification on Adsorptive Performance of Clay Minerals for Malachite Green. Molecules 2024; 29:1974. [PMID: 38731464 PMCID: PMC11085210 DOI: 10.3390/molecules29091974] [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: 03/04/2024] [Revised: 03/28/2024] [Accepted: 04/04/2024] [Indexed: 05/13/2024] Open
Abstract
Artificially modified adsorbing materials mainly aim to remedy the disadvantages of natural materials as much as possible. Using clay materials such as rectorite, sodium bentonite and metakaolinite (solid waste material) as base materials, hydrothermally modified and unmodified materials were compared. CM-HT and CM (adsorbing materials) were prepared and used to adsorb and purify wastewater containing malachite green (MG) dye, and the two materials were characterized through methods such as BET, FT-IR, SEM and XRD. Results: (1) The optimal conditions for hydrothermal modification of CM-HT were a temperature of 150 °C, a time of 2 h, and a liquid/solid ratio 1:20. (2) Hydrothermal modification greatly increased the adsorptive effect. The measured maximum adsorption capacity of CM-HT for MG reached 290.45 mg/g (56.92% higher than that of CM). The theoretical maximum capacity was 625.15 mg/g (186.15% higher than that of CM). (3) Because Al-OH and Si-O-Al groups were reserved in unmodified clay mineral adsorbing materials with good adsorbing activity, after hydrothermal modification, the crystal structure of the clay became loosened along the direction of the c axis, and the interlayer space increased to partially exchange interlayer metal cations connected to the bottom oxygen, giving CM-HT higher electronegativity and creating more crystal defects and chemically active adsorbing sites for high-performance adsorption. (4) Chemical adsorption was the primary way by which CM-HT adsorbed cationic dye, while physical adsorption caused by developed pore canal was secondary. The adsorption reaction occurred spontaneously.
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Affiliation(s)
- Enwen Wang
- School of Resources and Environmental Engineering, Anshun University, Anshun 561000, China
| | - Teng Huang
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
- Key Laboratory of Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Ministry of Education, Mianyang 621010, China
| | - Qian Wu
- School of Resources and Environmental Engineering, Anshun University, Anshun 561000, China
| | - Lanchun Huang
- School of Resources and Environmental Engineering, Anshun University, Anshun 561000, China
| | - Desong Kong
- School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
| | - Hai Wang
- School of Resources and Environmental Engineering, Anshun University, Anshun 561000, China
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Hosny NM, Gomaa I, Elmahgary MG, Ibrahim MA. ZnO doped C: Facile synthesis, characterization and photocatalytic degradation of dyes. Sci Rep 2023; 13:14173. [PMID: 37648749 PMCID: PMC10468539 DOI: 10.1038/s41598-023-41106-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 08/22/2023] [Indexed: 09/01/2023] Open
Abstract
Carbon doped ZnO nanoparticles have been synthesized from the thermal decomposition of Zinc citrate precursor. The precursor was synthesized from semi-solid paste and then subjected to calcination at 700 °C to produce ZnO nanoparticles. The precursor and ZnO were characterized by Fourier Transform Infrared Spectroscopy, UV-visible (UV-Vis) spectra, Transmission Electron Microscope, Field Emission Scanning Electron Microscope, Energy Dispersive Analysis by X-ray (EDAX), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results ensured the formation of hexagonal 2D-ZnO nanoparticles with a layer thickness of 25 nm. The optical band gap of ZnO was determined and found to be 2.9 eV, which is lower than the bulk. Photocatalytic degradation of Fluorescein dye as an anionic dye and Rhodamine B as a cationic dye was evaluated via C-ZnO NPs under UV irradiation. ZnO displayed 99% degradation of Fluorescein dye after 240 min and a complete photocatalytic degradation of Rhodamine B dye after 120 min under UV irradiation.
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Affiliation(s)
- Nasser Mohammed Hosny
- Chemistry Department , Faculty of Science, Port Said University, POB 42522, Port Said, Egypt.
| | - Islam Gomaa
- Chemistry Department , Faculty of Science, Port Said University, POB 42522, Port Said, Egypt
- Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El Sherouk City, Cairo, 11837, Egypt
| | - Maryam G Elmahgary
- Chemical Engineering Department, The British University in Egypt (BUE), El Shrouk City, Cairo, Egypt
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
| | - Medhat A Ibrahim
- Spectroscopy Department, National Research Centre, 33 El-Bohouth St., Dokki, Giza, 12622, Egypt.
- Molecular Modeling and Spectroscopy Laboratory, Centre for Excellence for Advanced Science, National Research Centre, 33 El-Bohouth St, Dokki, Giza, 12622, Egypt.
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Weon SH, Han J, Choi YK, Park S, Lee SH. Development of Blended Biopolymer-Based Photocatalytic Hydrogel Beads for Adsorption and Photodegradation of Dyes. Gels 2023; 9:630. [PMID: 37623085 PMCID: PMC10454056 DOI: 10.3390/gels9080630] [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: 07/12/2023] [Revised: 07/28/2023] [Accepted: 08/04/2023] [Indexed: 08/26/2023] Open
Abstract
Blended biopolymer-based photocatalytic hydrogel beads were synthesized by dissolving the biopolymers in 1-ethyl-3-methylimidazolium acetate ([Emim][Ac]), adding TiO2, and reconstituting the beads with ethanol. The incorporation of modifying biopolymer significantly enhanced the adsorption capacity of the cellulose/TiO2 beads. Cellulose/carrageenan/TiO2 beads exhibited a 7.0-fold increase in adsorption capacity for methylene blue (MB). In contrast, cellulose/chitosan/TiO2 beads showed a 4.8-fold increase in adsorption capacity for methyl orange (MO) compared with cellulose/TiO2 beads. In addition, cellulose/TiO2 microbeads were prepared through the sol-gel transition of the [Emim][Ac]-in-oil emulsion to enhance photodegradation activity. These microbeads displayed a 4.6-fold higher adsorption capacity and 2.8-fold higher photodegradation activity for MB than the millimeter-sized beads. Furthermore, they exhibited superior dye removal efficiencies for various dyes such as Congo red, MO, MB, crystal violet, and rhodamine B, surpassing the performance of larger beads. To expand the industrial applicability of the microbeads, biopolymer/TiO2 magnetic microbeads were developed by incorporating Fe2O3. These magnetic microbeads outperformed millimeter-sized beads regarding the efficiency and time required for MB removal from aqueous solutions. Furthermore, the physicochemical properties of magnetic microbeads can be easily controlled by adjusting the type of biopolymer modifier, the TiO2 and magnetic particle content, and the ratio of each component based on the target molecule. Therefore, biopolymer-based photocatalytic magnetic microbeads have great potential not only in environmental fields but also in biomedical fields.
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Affiliation(s)
- Seung Hyeon Weon
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea; (S.H.W.); (J.H.); (Y.-K.C.)
| | - Jiwoo Han
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea; (S.H.W.); (J.H.); (Y.-K.C.)
| | - Yong-Keun Choi
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea; (S.H.W.); (J.H.); (Y.-K.C.)
- R&D Center, ChoiLab Inc., Seoul 01811, Republic of Korea
| | - Saerom Park
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea; (S.H.W.); (J.H.); (Y.-K.C.)
- R&D Center, ChoiLab Inc., Seoul 01811, Republic of Korea
| | - Sang Hyun Lee
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea; (S.H.W.); (J.H.); (Y.-K.C.)
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Yavaş A, Atan E, Sutcu M. Self-cleaning and photocatalytic properties of eco-friendly clay-based facing bricks from industrial and natural wastes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27798-1. [PMID: 37264170 DOI: 10.1007/s11356-023-27798-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 05/17/2023] [Indexed: 06/03/2023]
Abstract
In this study, self-cleaning and photocatalytic performance of clay-based facing bricks produced using two different wastes (red mud: RM, hazelnut shell: HS) under visible light by an organic pollutant, methylene blue (MB), were discussed. The results revealed that the incorporation of waste into the samples improved the photocatalytic activity for certain ratios and also provided the desired physical properties according to the relevant standards. In terms of self-cleaning performance, the best results were obtained from the samples containing 5% RM (RM5HS) and 10% RM (RM10HS) combined with 10% of HS by weight. While RM10HS with an apparent reaction rate of 2.99 × 10-1 h-1 achieved total removal efficiency of 89.74%, RM5HS with an apparent reaction rate of 2.82 × 10-1 h-1 was able to remove 91.21% of initial concentration of MB dye.
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Affiliation(s)
- Ahmet Yavaş
- Metallurgical and Materials Engineering Dept, Izmir Katip Celebi University, 35620, Izmir, Turkey
| | - Ebubekir Atan
- Mechanical Engineering Dept, Izmir Katip Celebi University, 35620, Izmir, Turkey
| | - Mucahit Sutcu
- Metallurgical and Materials Engineering Dept, Izmir Katip Celebi University, 35620, Izmir, Turkey.
- Metallurgical and Materials Engineering Dept, Manisa Celal Bayar University, 45140, Manisa, Turkey.
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Kaur M, Charak A, Sandhu S, Toor AP, Singh V. Biomass-derived graphene modified γ-Fe 2O 3/N,Fe–TiO 2@GO: a prolific photoactive material with extended visible to near IR harvesting. Catal Sci Technol 2023. [DOI: 10.1039/d2cy01502a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study reports the development of a novel ternary self-assembled γ-Fe2O3/N,Fe–TiO2@GO nanocomposite as a visible to near IR (NIR) active photocatalyst prepared by ultrasonic activation followed by hydrothermal treatment.
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Affiliation(s)
- Manpreet Kaur
- Department of Applied Sciences, Punjab Engineering College, Deemed to be University, Sector-12, Chandigarh, India
| | - Abhishek Charak
- Department of Production and Industrial Engineering, Punjab Engineering College, Deemed to be University, Sector-12, Chandigarh, India
| | - Sofia Sandhu
- Department of Applied Sciences, Punjab Engineering College, Deemed to be University, Sector-12, Chandigarh, India
| | - Amrit Pal Toor
- Dr. SSB, University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, India
- Energy Research Centre, Panjab University, Chandigarh, India
| | - Vasundhara Singh
- Department of Applied Sciences, Punjab Engineering College, Deemed to be University, Sector-12, Chandigarh, India
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Elgarahy AM, Maged A, Elwakeel KZ, El-Gohary F, El-Qelish M. Tuning cationic/anionic dyes sorption from aqueous solution onto green algal biomass for biohydrogen production. ENVIRONMENTAL RESEARCH 2023; 216:114522. [PMID: 36243056 DOI: 10.1016/j.envres.2022.114522] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/10/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Global water security and energy demands associated with uncontrollable population growth and rapid industrial progress are one of the utmost serious needs dangerously confronting humanity. On account of waste as a wealth strategy; a multifunctional eco-friendly sorbent (MGAP) from green alga was prepared successfully for remediation of cationic/anionic organic dyes and biohydrogen production. The structural and morphological properties of sorbent were systematically scrutinized by a variety of spectral analyses. The loading capacity of MGAP towards rhodamine B (RhB) and methyl orange (MO) dyes was inclusivity inspected under variable experimental conditions. The adsorption kinetics of both dyes onto MGAP was in good agreement with pseudo-second-order theory, whereas adsorption isotherms could fit well with the Langmuir model, with satisfactory loading capacities of 144.92 and 196.04 mg g-1 for RhB and MO molecules, respectively. Moreover, ultra-sonication treatment admirably decreased the sorption equilibrium time from 180.0 min to 30.0 min. Furthermore, spent sorbent was managed particularly for biohydrogen production with a measured yield of 112.89, 116.59, and 128.17 mL-H2/gVS for MGAP, MGAP-MO, and MGAP-RhB, respectively. Overall, the produced MGAP can potentially be offered up as a promising dye scavenger for wastewater remediation and biohydrogen production, thereby fulfilling waste management and circular economy.
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Affiliation(s)
- Ahmed M Elgarahy
- Egyptian Propylene and Polypropylene Company (EPPC), Port Said, Egypt; Environmental Chemistry Division, Environmental Science Department, Faculty of Science, Port Said University, Port Said, Egypt
| | - Ali Maged
- Geology Department, Faculty of Science, Suez University, P.O. Box 43518, El Salam City, Suez Governorate, Egypt.
| | - Khalid Z Elwakeel
- Environmental Chemistry Division, Environmental Science Department, Faculty of Science, Port Said University, Port Said, Egypt
| | - Fatma El-Gohary
- Water Pollution Research Department, National Research Centre, El Buhouth St., Dokki, 12622, Cairo, Egypt
| | - Mohamed El-Qelish
- Water Pollution Research Department, National Research Centre, El Buhouth St., Dokki, 12622, Cairo, Egypt
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Fatimah I, Fadillah G, Ayu Rednasari R, Wahyuningsih S. Green reduction of graphene oxide using Annona muricata leaves extract for adsorption of methylene blue. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sagadevan S, Alshahateet SF, Anita Lett J, Fatimah I, Poonchi Sivasankaran R, Kassegn Sibhatu A, Leonardg E, Le MV, Soga T. Highly efficient photocatalytic degradation of methylene blue dye over Ag2O nanoparticles under solar light irradiation. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Bhat AH, Chishti HTN. Adsorption of rhodamine-B by polypyrrole Sn (IV) tungstophosphate nanocomposite cation exchanger: Kinetic-cum-thermodynamic investigations. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2114912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Aabid Hussain Bhat
- Department of Chemistry, National Institute of Technology Srinagar, Srinagar, India
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Mineral-Supported Photocatalysts: A Review of Materials, Mechanisms and Environmental Applications. ENERGIES 2022. [DOI: 10.3390/en15155607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Although they are of significant importance for environmental applications, the industrialization of photocatalytic techniques still faces many difficulties, and the most urgent concern is cost control. Natural minerals possess abundant chemical inertia and cost-efficiency, which is suitable for hybridizing with various effective photocatalysts. The use of natural minerals in photocatalytic systems can not only significantly decrease the pure photocatalyst dosage but can also produce a favorable synergistic effect between photocatalyst and mineral substrate. This review article discusses the current progress regarding the use of various mineral classes in photocatalytic applications. Owing to their unique structures, large surface area, and negatively charged surface, silicate minerals could enhance the adsorption capacity, reduce particle aggregation, and promote photogenerated electron-hole pair separation for hybrid photocatalysts. Moreover, controlling the morphology and structure properties of these materials could have a great influence on their light-harvesting ability and photocatalytic activity. Composed of silica and alumina or magnesia, some silicate minerals possess unique orderly organized porous or layered structures, which are proper templates to modify the photocatalyst framework. The non-silicate minerals (referred to carbonate and carbon-based minerals, sulfate, and sulfide minerals and other special minerals) can function not only as catalyst supports but also as photocatalysts after special modification due to their unique chemical formula and impurities. The dye-sensitized minerals, as another natural mineral application in photocatalysis, are proved to be superior photocatalysts for hydrogen evolution and wastewater treatment. This work aims to provide a complete research overview of the mineral-supported photocatalysts and summarizes the common synergistic effects between different mineral substrates and photocatalysts as well as to inspire more possibilities for natural mineral application in photocatalysis.
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Photocatalytic Dye Degradation and Bio-Insights of Honey-Produced α-Fe2O3 Nanoparticles. WATER 2022. [DOI: 10.3390/w14152301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Iron oxide nanoparticles are produced using simple auto combustion methods with honey as a metal-stabilizing and -reducing agent. Herein, α-Fe2O3 nanoparticles are produced using an iron nitrate precursor. These prepared samples are analyzed by an X-ray diffractometer (XRD), FTIR spectroscopy, UV-DRS, and a field-emission scanning electron microscope (FESEM) combined with energy-dispersive spectroscopy and a vibrating sample magnetometer (VSM). The XRD results confirm a rhombohedral structure with an R3c¯ space group single-phase formation of α-Fe2O3 in all samples. FESEM images reveal the different morphologies for the entire three samples. TEM analysis exhibits spherical shapes and their distribution on the surfaces. XPS spectroscopy confirms the Fe-2p and O-1s state and their valency. The VSM study shows strong ferromagnetic behavior. The prepared α-Fe2O3 nanoparticles exhibit exceptional charge carriers and radical production. The prepared sample retains excellent photocatalytic, antifungal and antibacterial activity.
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Enhanced Photocatalytic Activity of Zn-Al Layered Double Hydroxides for Methyl Violet and Peat Water Photooxidation. NANOMATERIALS 2022; 12:nano12101650. [PMID: 35630872 PMCID: PMC9146421 DOI: 10.3390/nano12101650] [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: 03/25/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 02/04/2023]
Abstract
Zn-Al Layered Double Hydroxides (Zn-Al LDHs) and its calcined form were successfully prepared and utilized for the removal of methyl violet (MV) and treatment of peat water by photocatalytic oxidation. The research was aimed to evaluate the effect of calcination to Zn-Al LDHs for the effect on the physicochemical character and the capability as a photocatalyst. The characterization of the samples was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer–Emmet–Teller specific surface area (BET), and X-ray photoelectron spectroscopy (XPS). The results showed that the increased BET specific surface area along with the enhanced porous structure was achieved by the calcination procedure, which is associated with the enhanced interlayer space of d003 identified by XRD analysis. Thermal conversion showed an influence to the increased band gap energy from 3.10 eV in the uncalcined Zn-Al LDHs into 3.16 eV for the calcined material. These character changes contributed to the enhanced photocatalytic activity of the Zn-AL LDHs by calcination, which was proposed and verified by experiments. It was observed that photocatalytic activity of the material for MV gave about a 45.57% removal of MV and a 68% removal for the natural organic material of the peat water.
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