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Dhanasekaran A, Priyadarshini N, Perumal I, Suresh G, Sagadevan S. Hydroxyapatite derived from eggshell embedded on functionalized g-C 3N 4 for synergistic extraction of U(VI) from aqueous solution. CHEMOSPHERE 2024; 364:143018. [PMID: 39111674 DOI: 10.1016/j.chemosphere.2024.143018] [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: 06/09/2024] [Accepted: 08/02/2024] [Indexed: 08/13/2024]
Abstract
In this paper, we report hydroxyapatite derived from egg-shell biowaste embedded on diglycolamic acid functionalized graphitic carbon nitride nanocomposite (abbreviated as HAp@D-gCN). The compositional and morphological characteristics of HAp@D-gCN were evaluated using scanning electron microscope, X-ray diffraction, BET, FTIR techniques and surface charge using zeta potential measurement. The sorption of U(VI) species on HAp@D-gCN was investigated through batch studies as a function of pH, contact time, initial U(VI) concentration, adsorbent dosage and ionic strength. The adsorption of U(VI) onto HAp@D-gCN was confirmed by FTIR, XRD and EDS elemental mapping. Adsorption kinetics follow pseudo second order model and it attains equilibrium within 20 min. Adsorption isotherm data correlates well with Langmuir isotherm model with a maximum sorption capacity of 993.6 mg of U(VI) per gram of HAp@D-gCN at 298K. U(VI) can be leached from the loaded adsorbent using 0.01 M Na2CO3 as desorbing agent and its sorption capacity remains unaffected even after 4 adsorption-desorption cycles. Hence, the present study reveals that HAp@D-gCN nanocomposite could serve as an environmental friendly material with potential application in environmental remediation.
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Affiliation(s)
- A Dhanasekaran
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Chennai, 600127, Tamil Nadu, India
| | - N Priyadarshini
- Department of Chemistry, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, 603110, Tamil Nadu, India
| | - Ilaiyaraja Perumal
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Chennai, 600127, Tamil Nadu, India.
| | - G Suresh
- Department of Physics, Aarupadai Veedu Institute of Technology, Vinayaka Mission's Research Foundation (DU), Chennai, 603104, Tamil Nadu, India
| | - Suresh Sagadevan
- Nanotechnology and Catalysis Research Centre, Institute of Advanced Studies, Universiti of Malaya, 50603, Kuala Lumpur, Malaysia; Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamil Nadu, 603103, India
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Mamba FB, Mbuli BS, Ramontja J. Synergistic effect of ZnO/Ag 2O@g-C 3N 4 based nanocomposites embedded in carrageenan matrix for dye degradation in water. Heliyon 2024; 10:e31109. [PMID: 38828361 PMCID: PMC11140603 DOI: 10.1016/j.heliyon.2024.e31109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 05/02/2024] [Accepted: 05/09/2024] [Indexed: 06/05/2024] Open
Abstract
This research achieved success by synthesizing innovative nanocomposite composed of zinc oxide (ZnO), graphitic carbon nitride (g-C3N4) and silver oxide (Ag2O) nanomaterials incorporated into a carrageenan matrix, thus creating an environmentally friendly and stable support structure. The synthesis process involved hydrothermal and chemical precipitation methods to create photocatalytic g-C3N4, ZnO, and Ag2O nanocomposites. The success is evident through the characterization results, which unveiled distinctive peaks corresponding to Zn-O (590-404 cm-1) and Ag-O (2072 cm-1) stretching in the Fourier transform infrared (FTIR) and X-ray diffraction (XRD) analyses, conclusively confirming the successful synthesis of g-C3N4, ZnO, Ag2O, and their respective nanocomposites. Further validation through a scanning electron microscope coupled with an energy dispersive spectrometer (SEM-EDX) and elemental mapping affirmed the presence of Zn, O, Ag, C, and N. Additionally, transmission electron microscope (TEM) imaging unveiled the nanosheet morphology of g-C3N4, the nanorod structure of ZnO, and the spherical form of Ag2O nanomaterials. ZnO and Ag2O nanomaterials demonstrated a consistent 10-20 nm size range. To underscore their ability to harness visible light, the nanomaterials were excited at 380 nm, emitting visible light emission within the 400-450 nm range. The synthesized nanocomposites showcased outstanding adsorption and photocatalytic properties, achieving efficiency ranging from 80 % to 98 %, attributed to the synergistic interactions between the various components. These findings culminate in a confirmation of the research's success, validating the exceptional potential of these nanocomposites for various applications.
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Affiliation(s)
- Feziwe B. Mamba
- Department of Chemical Sciences, Faculty of Science, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg, 2028, South Africa
- DSI/Mintek Nanotechnology Innovation Centre, University of Johannesburg, Doornfontein, 2028, South Africa
- Centre for Nanomaterials Science Research, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Bhekani S. Mbuli
- Department of Chemical Sciences, Faculty of Science, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg, 2028, South Africa
- DSI/Mintek Nanotechnology Innovation Centre, University of Johannesburg, Doornfontein, 2028, South Africa
- Centre for Nanomaterials Science Research, University of Johannesburg, Doornfontein, 2028, South Africa
| | - James Ramontja
- Department of Chemical Sciences, Faculty of Science, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg, 2028, South Africa
- DSI/Mintek Nanotechnology Innovation Centre, University of Johannesburg, Doornfontein, 2028, South Africa
- Centre for Nanomaterials Science Research, University of Johannesburg, Doornfontein, 2028, South Africa
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Matei (Brazdis) RI, Baroi AM, Fistos T, Fierascu I, Grapin M, Raditoiu V, Raduly FM, Nicolae CA, Fierascu RC. Clam Shell-Derived Hydroxyapatite: A Green Approach for the Photocatalytic Degradation of a Model Pollutant from the Textile Industry. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2492. [PMID: 38893756 PMCID: PMC11172594 DOI: 10.3390/ma17112492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/16/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024]
Abstract
This work aims to evaluate the potential use of natural wastes (in particular, clam shells) to synthesize one of the most well-known and versatile materials from the phosphate mineral group, hydroxyapatite (HAP). The obtained material was characterized in terms of morphology and composition using several analytical methods (scanning electron microscopy-SEM, X-ray diffraction-XRD, X-ray fluorescence-XRF, Fourier transform infrared spectroscopy-FTIR, thermal analysis-TGA, and evaluation of the porosity and specific surface characteristics by the Brunauer-Emmett-Teller-BET method) in order to confirm the successful synthesis of the material and to evaluate the presence of potential secondary phases. The developed material was further doped with iron oxide (HAP-Fe) using a microwave-assisted method, and both materials were evaluated in terms of photocatalytic activity determined by the photodecomposition of methylene blue (MB) which served as a contaminant model. The best results (approx. 33% MB degradation efficiency, after 120 min. of exposure) were obtained for the hydroxyapatite material, superior to the HAP-Fe composite (approx. 27%). The utilization of hydroxyapatite obtained from clam shells underscores the importance of sustainable and eco-friendly practices in materials syntheses. By repurposing waste materials from the seafood industry, we not only reduce environmental impact, but also create a valuable resource with diverse applications, contributing to advancements in both healthcare and environmental protection.
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Affiliation(s)
- Roxana Ioana Matei (Brazdis)
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania
| | - Anda Maria Baroi
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
- Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Blvd., 011464 Bucharest, Romania
| | - Toma Fistos
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania
| | - Irina Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
- Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Blvd., 011464 Bucharest, Romania
| | - Maria Grapin
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania
| | - Valentin Raditoiu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
| | - Florentina Monica Raduly
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
| | - Cristian Andi Nicolae
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
| | - Radu Claudiu Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania; (R.I.M.); (A.M.B.); (T.F.); (I.F.); (M.G.); (V.R.); (F.M.R.); (C.A.N.)
- Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology Politehnica Bucharest, 1-7 Gh. Polizu Str., 011061 Bucharest, Romania
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Chen PY, Keerthi Reddy T, Rajaji U, Alothman AA, Govindasamy M. Optimization of Electrochemical Sensitivity in Anticancer Drug Quantification through ZnS@CNS Nanosheets: Synthesis via Accelerated Sonochemical Methodology. ULTRASONICS SONOCHEMISTRY 2024; 105:106858. [PMID: 38564910 PMCID: PMC11002299 DOI: 10.1016/j.ultsonch.2024.106858] [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: 01/01/2024] [Revised: 03/06/2024] [Accepted: 03/23/2024] [Indexed: 04/04/2024]
Abstract
Zinc sulfide/graphitic Carbon Nitride binary nanosheets were synthesized by using a novel sonochemical pathway with high electrocatalytic ability. The as- obtained samples were characterized by various analytical methods such as Transmission Electron Microscopy (TEM), Field emission scanning electron microscopy (FESEM), Energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction analysis (XRD), and X-ray photoelectron spectroscopy (XPS) to evaluate the properties of ZnS@CNS synthesized by this new route. Subsequently, the electrical and electrochemical performance of the proposed electrodes were characterized by using EIS and CV to establish an electroactive ability of the nanocomposites. The complete properties like structural and physical of ZnS@CNS were analyzed. As-prepared binary nanocomposite was applied towards the detection of anticancer drug (flutamide) by various electrochemical methods such as cyclic voltammetry (CV), differential pulse voltammetry (DPV) and amperometry. The glassy carbon electrode modified with a ZnS@CNS composite demonstrates a remarkable electrocatalytic efficiency for detecting flutamide in a pH 7.0 (PBS). The composite modified electrode shows synergistic effect of ZnS and CNS catalyst. The electrochemical sensing performance of the linear range was improved significantly due to high electroactive sites and rapid electron transport pathways. Crucially, the electrochemical method was successfully demonstrated in biological fluids which reveals its potential real-time applicability in the analysis of drug.
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Affiliation(s)
- Pin-Yi Chen
- Department of Mechanical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan; International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices, Ming Chi University of Technology, New Taipei City 24301, Taiwan; Department of Mechanical Engineering, Chang Gung University, Taoyuan City 33302, Taiwan.
| | - T Keerthi Reddy
- Department of Mechanical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Umamaheswari Rajaji
- Centre for Applied Research, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 602105, Tamil Nadu, India
| | - Asma A Alothman
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mani Govindasamy
- International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices, Ming Chi University of Technology, New Taipei City 24301, Taiwan; Research Center for Intelligence Medical Devices, Ming Chi University of Technology, New Taipei City 243303, Taiwan.
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Kumaravel S, Avula B, Chandrasatheesh C, Niyitanga T, Saranya R, Hasan I, Abisheik T, Rai RS, Pandiyan V, Balu K. Rational construction of MOF derived α-Fe 2O 3/g-C 3N 4 composite for effective photocatalytic degradation of organic pollutants and electrocatalytic oxygen evolution reaction. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123972. [PMID: 38306923 DOI: 10.1016/j.saa.2024.123972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/20/2024] [Accepted: 01/27/2024] [Indexed: 02/04/2024]
Abstract
In recent years, researchers have been actively investigating metal oxide-based materials with narrow bandgaps due to their potential applications toward wastewater treatment and oxygen evolution reactions (OER). In this study, we successfully synthesized g-C3N4 (GCN), Fe2O3, and Fe2O3/g-C3N4 (FGCN) using thermal polymerization and hydrothermal methods. We characterized the physicochemical and structural properties of these materials through various analytical techniques including XRD, FT-IR, UV-DRS, XPS, FE-SEM, and HR-TEM analyses, confirming the effective construction of the FGCN composite catalyst. We evaluated the photocatalytic activity of Fe2O3, GCN, and FGCN composite catalysts by assessing their ability to degrade rhodamine B (RhB) and crystal violet (CV) by exposing them to sunlight for 150 min. Among these catalysts, the FGCN composite demonstrated excellent photocatalytic performance, achieving 93 % and 95 % degradation of RhB and CV, respectively, under 150 min of sunlight exposure. The developed Fe2O3/g-C3N4@Nickel foam (FGCN@NF) composite catalyst exhibits remarkable OER performance, with a reduced Tafel slope of 64 mV/dec and a low overpotential of 290 mV at a current density of 10 mA/cm2 and shows excellent durable performance over a long time (15 h). Total Organic Carbon (TOC) analysis confirmed the mineralization of both dyes. The photocatalytic performance remained largely unchanged after five consecutive experiments, demonstrating excellent reusability and photostability. Trapping experiments revealed that O2●- is the main species responsible for the photocatalytic decomposition of various dyes by the FGCN composite catalyst. Therefore, the development of a versatile photo/electrocatalytic system that can efficiently promote energy conversion in environmental applications has attracted great attention.
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Affiliation(s)
- Sakthivel Kumaravel
- School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
| | - Balakrishna Avula
- Department of Chemistry, Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous), Nandyal, Andhra Pradesh 518501, India
| | | | - Theophile Niyitanga
- School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
| | - Rajasekar Saranya
- Department of Biotechnology, SRM Institute of Science and Technology, Ramapuram, Chennai 600089, Tamil Nadu, India
| | - Imran Hasan
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - T Abisheik
- Department of Physics, Nehru Memorial College (Autonomous), Puthanampatti (Affiliated to Bharathidasan University), Tiruchirappalli 621007, Tamil Nadu, India
| | - Rajakumar S Rai
- Division of Mechanical Engineering, Karunya Institute of Technology and Sciences, Karunya Nagar, Coimbatore 641114, Tamil Nadu, India
| | - V Pandiyan
- Department of Physics, Nehru Memorial College (Autonomous), Puthanampatti (Affiliated to Bharathidasan University), Tiruchirappalli 621007, Tamil Nadu, India
| | - Krishnakumar Balu
- Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 602105, Tamil Nadu, India; Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, E.T.S. de Ingenieros, Universidad de Sevilla, Avda. Camino de los Descubrimientos s/n., 41092 Sevilla, Spain.
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Pompapathi K, Anantharaju KS, Surendra BS, Meena S, Uma B, Chowdhury AP, Murthy HCA. Synergistic effect of a Bi 2Zr 2O 7 and hydroxyapatite composite: organic pollutant remediation, antibacterial and electrochemical sensing applications. RSC Adv 2023; 13:28198-28210. [PMID: 37753401 PMCID: PMC10518660 DOI: 10.1039/d3ra05222b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 09/08/2023] [Indexed: 09/28/2023] Open
Abstract
Global concern regarding the energy crisis and environmental pollution is increasing. The fabrication of efficient catalysts remains a long-term goal. Recently, green synthesis methods for catalyst fabrication have attracted the scientific community. Herein, a simple approach to synthesize bismuth zirconate-hydroxyapatite (BZO-HA) nanocomposites using Mentha spicata (mint) leaves as a reducing agent via a combustion method has been reported. The use of a green reducing agent provided economic attributes to this work. Among the prepared samples, the BZO-HA (20%) composite exhibited superior photocatalytic activity. The photodegradation efficiency of the composite reached 90.3% and 98.4% for methylene blue (MB) and rose Bengal (RB) dyes, respectively. The results showed the excellent optical performance of the prepared composites. The constructed sensor (BZO-HA 20%) for the very first time showed outstanding selectivity and performance towards sensing lead nitrate and dextrose compared to bare bismuth zirconate (BZO) and hydroxyapatite (HA). A three-electrode system using 0.1 M KCl was used for the study. The synthesized composite BZO-HA (20%) can sense lead nitrate and dextrose over the concentration range of 1-5 mM in the potential range from -1.0 V to +1.0 V. The BZO-HA composite was also investigated against Gram-negative (S. typhi) and Gram-positive (S. aureus) bacteria for antibacterial activity studies. Enhanced antibacterial activity was observed compared to bare BZO and HA catalysts. Thus, the prepared BZO-HA nanocomposite exhibited multifunctional applications.
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Affiliation(s)
- K Pompapathi
- Dr. D. Premachandra Sagar Centre for Advanced Materials, Dayananda Sagar College of Engineering Shavige Malleshwara Hills, Kumaraswamy Layout Bengaluru 560111 India
- Department of Material Science, Mangalore University Mangalagangotri Mangalore 574199 Karnataka India
| | - K S Anantharaju
- Dr. D. Premachandra Sagar Centre for Advanced Materials, Dayananda Sagar College of Engineering Shavige Malleshwara Hills, Kumaraswamy Layout Bengaluru 560111 India
- Department of Chemistry, Dayananda Sagar College of Engineering Shavige Malleshwara Hills, Kumaraswamy Layout Bengaluru 560111 India
| | - B S Surendra
- Department of Chemistry, Dayananda Sagar College of Engineering Shavige Malleshwara Hills, Kumaraswamy Layout Bengaluru 560111 India
| | - S Meena
- Department of Chemistry, Dayananda Sagar College of Engineering Shavige Malleshwara Hills, Kumaraswamy Layout Bengaluru 560111 India
| | - B Uma
- Department of Chemistry, Dayananda Sagar College of Engineering Shavige Malleshwara Hills, Kumaraswamy Layout Bengaluru 560111 India
| | - Arpita Paul Chowdhury
- Department of Chemistry, Dayananda Sagar College of Engineering Shavige Malleshwara Hills, Kumaraswamy Layout Bengaluru 560111 India
| | - H C Ananda Murthy
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University Adama, P O Box 1888 Ethiopia
- Department of Prosthodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical and Technical Science (SIMATS), Saveetha University Chennai 600077 Tamil Nadu India
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Alshammari GM, Al-Ayed MS, Abdelhalim MA, Al-Harbi LN, Qasem AA, Abdo Yahya M. Development of luminescence carbon quantum dots for metal ions detection and photocatalytic degradation of organic dyes from aqueous media. ENVIRONMENTAL RESEARCH 2023; 226:115661. [PMID: 36913999 DOI: 10.1016/j.envres.2023.115661] [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: 02/09/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
In the present study, fish scale waste was used for the organic synthesis of luminescence CQDs by the hydrothermal method. The impact of CQDs on improved photocatalytic degradation of organic dyes and metal ions detection is examined in this study. The synthesized CQDs had a variety of characteristics that were detected, such as crystallinity, morphology, functional groups, and binding energies. The luminescence CQDs showed outstanding photocatalytic effectiveness for the destruction of methylene blue (96.5%) and reactive red 120 dye (97.8%), respectively after 120 min exposure to visible light (420 nm). The high electron transport properties of the CQDs edges, which make it possible to efficiently separate electron-hole pairs, are attributed to the enhanced photocatalytic activity of the CQDs. These degradation results prove that the CQDs are the outcome of a synergistic interaction between visible light (adsorption); a potential mechanism is also suggested, and the kinetics is analyzed to use a pseudo-first-order model. Additionally, the metal ions detection of CQDs was studied by various metal ions (Hg2+, Fe2+, Cu2+, Ni2+, and Cd2+) in an aqueous solution and results revealed that the PL intensity of CQDs in presence of cadmium ions decreased. Studies show that the organic fabrication of CQDs are effective photocatalyst and may one day serve as the ideal material to reduce water pollution.
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Affiliation(s)
- Ghedeir Muslem Alshammari
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Mohammed Suliman Al-Ayed
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohamed Anwar Abdelhalim
- Department of Physics and Astronomy, College of Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Laila Naif Al-Harbi
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Akram Ahmed Qasem
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammed Abdo Yahya
- Department of Food Science & Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
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Chuaicham C, Noguchi Y, Shenoy S, Shu K, Trakulmututa J, Srikhaow A, Sekar K, Sasaki K. Simultaneous Photocatalytic Sugar Conversion and Hydrogen Production Using Pd Nanoparticles Decorated on Iron-Doped Hydroxyapatite. Catalysts 2023. [DOI: 10.3390/catal13040675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
Pd nanoparticles (PdNPs) were successfully deposited on the surface of Fe(III)-modified hydroxyapatite (HAp), which was subsequently used as a photocatalyst for simultaneous photocatalytic H2 evolution and xylose conversion. The structural phase and morphology of the pristine HAp, FeHAp, and Pd@FeHAp were examined using XRD, SEM, and TEM instruments. At 20 °C, Pd@FeHAp provided a greater xylose conversion than pristine HAp and FeHAp, about 2.15 times and 1.41 times, respectively. In addition, lactic acid and formic acid production was increased by using Pd@FeHAp. The optimal condition was further investigated using Pd@FeHAp, which demonstrated around 70% xylose conversion within 60 min at 30 °C. Moreover, only Pd@FeHAp produced H2 under light irradiation. To clarify the impact of Fe(III) doping in FeHAp and heterojunction between PdNPs and FeHAp in the composite relative to pure Hap, the optical and physicochemical properties of Pd@FeHAp samples were analyzed, which revealed the extraordinary ability of the material to separate and transport photogenerated electron-hole pairs, as demonstrated by a substantial reduction in photoluminescence intensity when compared to Hp and FeHAp. In addition, a decrease in electron trap density in the Pd@FeHAp composite using reversed double-beam photoacoustic spectroscopy was attributed to the higher photocatalytic activity rate. Furthermore, the development of new electronic levels by the addition of Fe(III) to the structure of HAp in FeHAp may improve the ability to absorb light by lessening the energy band gap. The photocatalytic performance of the Pd@FeHAp composite was improved by lowering charge recombination and narrowing the energy band gap. As a result, a newly developed Pd@FeHAp composite might be employed as a photocatalyst to generate both alternative H2 energy and high-value chemicals.
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Affiliation(s)
- Chitiphon Chuaicham
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Yuto Noguchi
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Sulakshana Shenoy
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Kaiqian Shu
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Jirawat Trakulmututa
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Assadawoot Srikhaow
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Karthikeyan Sekar
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan
- Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India
| | - Keiko Sasaki
- Department of Earth Resources Engineering, Kyushu University, Fukuoka 819-0395, Japan
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Ranjith R, Vignesh S, Balachandar R, Suganthi S, Raj V, Ramasundaram S, Kalyana Sundar J, Shkir M, Oh TH. Construction of novel g-C 3N 4 coupled efficient Bi 2O 3 nanoparticles for improved Z-scheme photocatalytic removal of environmental wastewater contaminant: Insight mechanism. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117134. [PMID: 36584459 DOI: 10.1016/j.jenvman.2022.117134] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Recently, the major environmental pollution produced by the release of wastewater in liquid type is one of the most extensive forms of foremost pollution in water ecosystems. In this article, the Bi2O3/g-C3N4 nanocomposite with a direct Z-scheme was effectively obtained by a facile hydrothermal system. The crystal structures, surface morphology, chemical composition, and the optical belongings of the as-obtained composite catalysts were examined by Power XRD, FT-IR spectra, High-resolution XPS spectra, FE-SEM images with EDX spectra, High-resolution TEM images, UV-Vis DRS, and PL spectra respectively. Furthermore, the photocatalytic performance was assessed by the degradation of aqueous Rhodamine B (Rh B) dye under visible-light exposure. The Bi2O3/g-C3N4 composite photocatalysts (PCs) showed the maximum photo-degradation efficiency through a rate constant value of 0.0149 min-1, which is 4.9 and 5.3 folds superior to Bi2O3, and GCN, respectively. The better GBO2 nanocomposite PCs showed a superior photocatalytic degradation performance (>82%) of aqueous Rh B dye after five successive recycles. Moreover, based on these outcomes of the radical scavenging test, a direct and effective Z-scheme photocatalytic charger transfer mechanism was also projected. Finally, the reusability of the as-obtained Bi2O3/g-C3N4 nanocomposite has better stability and reusability, which was a favourable applicant for wastewater handling.
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Affiliation(s)
- R Ranjith
- Department of Physics, K.S.R. College of Engineering, Tiruchengode, 637 215, Tamil Nadu, India
| | - S Vignesh
- Materials Science Research Laboratory, Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Ramalingam Balachandar
- Department of Biotechnology, Prathyusha Engineering College, Chennai, 602 025, Tamil Nadu, India
| | - S Suganthi
- Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem, 636 011, Tamil Nadu, India.
| | - V Raj
- Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Subramaniyan Ramasundaram
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan-si, Gyeongbuk, 38541, Republic of Korea.
| | - J Kalyana Sundar
- Materials Science Research Laboratory, Department of Physics, Periyar University, Salem, 636 011, Tamil Nadu, India
| | - Mohd Shkir
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia; University Center for Research & Development (UCRD), Chandigarh University, NH95, Chandigarh-Ludhiana Highway, Gharuan, Mohali, Punjab, 140413, India
| | - Tae Hwan Oh
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan-si, Gyeongbuk, 38541, Republic of Korea
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10
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Yahia B, Faouzi S, Mohamed T. Methylene Blue Photo-degradation on the Hetero-junction System α-Fe2O3 / BaTiO3 Under Sunlight. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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11
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Recent Advances in g-C 3N 4-Based Materials and Their Application in Energy and Environmental Sustainability. Molecules 2023; 28:molecules28010432. [PMID: 36615622 PMCID: PMC9823828 DOI: 10.3390/molecules28010432] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/22/2022] [Accepted: 12/25/2022] [Indexed: 01/05/2023] Open
Abstract
Graphitic carbon nitride (g-C3N4), with facile synthesis, unique structure, high stability, and low cost, has been the hotspot in the field of photocatalysis. However, the photocatalytic performance of g-C3N4 is still unsatisfactory due to insufficient capture of visible light, low surface area, poor electronic conductivity, and fast recombination of photogenerated electron-hole pairs. Thus, different modification strategies have been developed to improve its performance. In this review, the properties and preparation methods of g-C3N4 are systematically introduced, and various modification approaches, including morphology control, elemental doping, heterojunction construction, and modification with nanomaterials, are discussed. Moreover, photocatalytic applications in energy and environmental sustainability are summarized, such as hydrogen generation, CO2 reduction, and degradation of contaminants in recent years. Finally, concluding remarks and perspectives on the challenges, and suggestions for exploiting g-C3N4-based photocatalysts are presented. This review will deepen the understanding of the state of the art of g-C3N4, including the fabrication, modification, and application in energy and environmental sustainability.
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12
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Zhao X, Zhang C, Ren Z, Wang B, Yang Q, An L, Liu J. Application of electrochemistry technology to effectively inhibit dye pollution and unfixed dye transfer in a washing microenvironment. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02597-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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13
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Hossain MS, Tuntun SM, Bahadur NM, Ahmed S. Enhancement of photocatalytic efficacy by exploiting copper doping in nano-hydroxyapatite for degradation of Congo red dye. RSC Adv 2022; 12:34080-34094. [PMID: 36505682 PMCID: PMC9704492 DOI: 10.1039/d2ra06294a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022] Open
Abstract
This research deals with the photocatalytic activity of hydroxyapatite and the improvement of efficiency by doping various percentages of copper; the catalysts were synthesized by the wet-chemical method. Pure and copper-doped photocatalysts were characterized by several techniques including X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), dynamic scanning calorimetry (DSC), and UV-Vis spectroscopy. The competency of pure and copper-doped hydroxyapatite as photocatalysts was assessed by their interaction with Congo red dye. The crystallographic parameters of the catalysts were also estimated by employing the XRD technique, and a relationship was established between the calculated parameters and photocatalytic performance. Crystallite size was calculated from various model equations, which revealed an acceptable crystallite size of 42-68 nm. Copper doping in hydroxyapatite impressively augmented the photocatalytic efficacy, for example 99% dye was degraded upon 0.63% Cu-doping compared to 75% for the pure HAp, which was exemplified not only by the reaction rate but also by the quantum yield. The degradation percentages changed with time but became fixed at 200 min. The molar extinction coefficient was estimated by employing the Beer-Lambert law and further utilized to compute the photonic efficiency of the catalysts. In the study of the photochemical reaction, a simplified reaction process was proposed, and the potentials of the conduction band and valence band were assessed, which influenced the activity. The doping of Cu in crystalline hydroxyapatite will enhance the photocatalytic activity towards Congo red dye under all experimental conditions.
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Affiliation(s)
- Md. Sahadat Hossain
- Glass Research Division, Institute of Glass & Ceramic Research and Testing, Bangladesh Council of Scientific and Industrial Research (BCSIR)Dhaka 1205Bangladesh
| | - Supanna Malek Tuntun
- Glass Research Division, Institute of Glass & Ceramic Research and Testing, Bangladesh Council of Scientific and Industrial Research (BCSIR)Dhaka 1205Bangladesh,Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology UniversityNoakhaliBangladesh
| | - Newaz Mohammed Bahadur
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology UniversityNoakhaliBangladesh
| | - Samina Ahmed
- Glass Research Division, Institute of Glass & Ceramic Research and Testing, Bangladesh Council of Scientific and Industrial Research (BCSIR)Dhaka 1205Bangladesh,BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR)Dhaka 1205Bangladesh
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Luo B, Wu C, Zhang F, Wang T, Yao Y. Preparation of Porous Ellipsoidal Bismuth Oxyhalide Microspheres and Their Photocatalytic Performances. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6035. [PMID: 36079416 PMCID: PMC9457083 DOI: 10.3390/ma15176035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 06/15/2023]
Abstract
Well-dispersed and uniform porous ellipsoidal-shaped bismuth oxyhalides (nominal composition: 80%BiOCl/20%BiOI) microspheres were obtained by a facile solvothermal method, in which process the use of polyvinylpyrrolidone (PVP) as template agent was found to be crucial. At 150 °C, elliptical porous particles with a particle size of 0.79 μm were formed. Instead of forming solid solutions, the study of X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) shows that the prepared 80%BiOCl/20%BiOI microspheres are composite of BiOCl and BiOI in nature and the obtained crystallite size is about 5.6 nm. The optical bandgap of 80%BiOCl/20%BiOI was measured to be 2.93 eV, which is between the bandgap values of BiOCl and BiOI. The 80%BiOCl/20%BiOI microspheres were able to decompose various organic dyes (rhodamine B-RhB, methyl orange-MO, methylene blue-MB, methyl violet-MV) under an illuminated condition with the degradation rate in the order of RhB > MB > MV > MO, and 98% of RhB can be degraded in 90 min. Radical scavenger tests showed that photogenerated holes are the main active species for the photocatalytic decomposition of all of the tested organic dyes. Our results show that the obtained porous ellipsoidal-shaped 80%BiOCl/20%BiOI microspheres are promising for the degradation of various organic pollutants under the illumination of visible light.
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Affiliation(s)
- Bing Luo
- China Southern Power Grid, Guangzhou 510623, China
| | - Canfeng Wu
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
| | - Fuzeng Zhang
- China Southern Power Grid, Guangzhou 510623, China
| | | | - Yingbang Yao
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
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