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Salaheldin H, Aboelnga A, Elsayed A. Mycosynthesis of zinc sulfide/zinc oxide nanocomposite using Fusarium oxysporum for catalytic degradation of methylene blue dye, antimicrobial, and anticancer activities. Sci Rep 2024; 14:32165. [PMID: 39741154 DOI: 10.1038/s41598-024-81855-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2024] [Accepted: 11/29/2024] [Indexed: 01/02/2025] Open
Abstract
In the present study, extracellular cell-free filtrate (CFF) of fungal Fusarium oxysporum f. sp. cucumerinum (FOC) species, was utilized to biosynthesize zinc oxide /zinc sulfide (ZnO/ZnS) nanocomposite. This was achieved by mixing the metal salt with the fungal CFF for 96 h at a temperature of 27 ± 1.0 °C and a pH of 6.5. Several analytical techniques, such as XRD, TEM, UV-Vis, FTIR, DLS, and zeta potential studies, have confirmed the synthesis of NPs. Fungal CFF enzymes and metabolites stabilized produced NPs, according to FTIR. The nanocomposite particle diameter (15-80 nm) was estimated using HR-TEM imaging. The DLS and XRD measurements verified those findings. The zone of inhibition diameter for MRSA was 35 ± 0.21 mm, while B. subtilis measured 33 ± 0.32 mm against the nanocomposite. For E. coli and S. typhi bacterial isolates, it was 25 ± 0.19 and 32 ± 0.36 mm, respectively. The determined MIC value for E. coli was 5,000 µg/mL and MRSA was 500 µg/mL. The ZnO/ZnS nanocomposite has a dose-dependent cytotoxic effect on breast cancer cells, with an IC50 of 197 ± 0.895 µg/mL. The Methylene blue dye was removed by 87.51% using the nanocomposite. Thus, green biosynthesized ZnO/ZnS nanocomposites are recommended for pharmaceutical, industrial, and biological applications.
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Affiliation(s)
- Hosam Salaheldin
- Biophysics Research Group, Faculty of Science, Physics Department, Mansoura University, Mansoura, 35516, Egypt.
| | - Aya Aboelnga
- Faculty of Science, Botany Department, Mansoura University, Mansoura, 35516, Egypt
| | - Ashraf Elsayed
- Faculty of Science, Botany Department, Mansoura University, Mansoura, 35516, Egypt
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2
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Gindose TG, Gebreslassie G, Hailegebreal TD, Ashebr TG, Mtunzi F, Atisme TB, Zereffa EA. Novel polyvinyl alcohol-assisted MnO 2-ZnO-CuO nanocomposites as an efficient photocatalyst for methylene blue degradation from wastewater. RSC Adv 2024; 14:38459-38469. [PMID: 39635357 PMCID: PMC11616714 DOI: 10.1039/d4ra06476c] [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: 09/07/2024] [Accepted: 11/09/2024] [Indexed: 12/07/2024] Open
Abstract
Pristine ZnO (Z), MnO2 (M), CuO (C) photocatalysts and polyvinyl alcohol (PVA)-assisted MnO2-ZnO-CuO (MZC) nanocomposites were synthesized via the sol-gel method. The synthesized samples were characterized using thermal analysis (TGA), X-ray diffraction (XRD), dynamic light scattering (DLS), scanning electron microscopy (SEM), energy dispersive X-ray (EDS), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM) techniques. The thermal analysis results of the prepared nanomaterial confirmed that the suitable calcination temperature for the synthesis of these nanomaterials is 420 °C. In addition to the morphological and elemental composition, the characteristic diffraction peaks of the MZC nanomaterial were found to align with those of the pristine Z, M, and C photocatalysts. The photocatalytic activities of the synthesized nanomaterials for methylene blue (MB) degradation were evaluated under optimized conditions. The degradation efficiencies of Z, M, C, and MZC were found to be 45%, 57%, 66%, and 93%, respectively, for MB in 180 minutes. The MZC nanocomposite exhibited superior photocatalytic activity compared to the pristine materials, which is attributed to the synergetic effect of the Z, M, and C photocatalysts. The effects of pH, initial dye concentration, and catalyst load were also explored to determine the optimum conditions. The best photocatalytic efficiency was observed at pH 8, with a 130 mg L-1 catalyst load, and a 10 mg L-1 initial dye concentration. The efficiency of the MZC nanocomposite in real textile wastewater was also tested, achieving 80% degradation of pollutants within 180 minutes. Recycling experiments were conducted for four consecutive cycles under optimal conditions. The photodegradation efficiency for the first, second, third, and fourth cycles was 93%, 91%, 90%, and 89%, respectively, demonstrating high consistency in photodegradation performance across the four cycles. Moreover, a Z-scheme photocatalytic mechanism was proposed as a potential mechanism for the MZC photocatalytic system.
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Affiliation(s)
- Teketel Girma Gindose
- Department of Industrial Chemistry, Addis Ababa Science and Technology University P. O. Box 16417 Addis Ababa Ethiopia
- Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University P. O. Box 1647 Addis Ababa Ethiopia
| | - Gebrehiwot Gebreslassie
- Department of Industrial Chemistry, Addis Ababa Science and Technology University P. O. Box 16417 Addis Ababa Ethiopia
- Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University P. O. Box 1647 Addis Ababa Ethiopia
- School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China Chengdu 611731 China
| | - Tessema Derbe Hailegebreal
- Department of Industrial Chemistry, Addis Ababa Science and Technology University P. O. Box 16417 Addis Ababa Ethiopia
- Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University P. O. Box 1647 Addis Ababa Ethiopia
- Department of Chemistry, Wachemo University P. O. Box 667 Hossana Ethiopia
| | - Tesfay G Ashebr
- Department of Industrial Chemistry, Addis Ababa Science and Technology University P. O. Box 16417 Addis Ababa Ethiopia
- Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University P. O. Box 1647 Addis Ababa Ethiopia
| | - Fanyana Mtunzi
- Department of Biotechnology and Chemistry, Vaal University of Technology Moshoeshoe Road Sebokengn 1983 South Africa
| | - Tsegaye Belege Atisme
- Department of Industrial Chemistry, Addis Ababa Science and Technology University P. O. Box 16417 Addis Ababa Ethiopia
- Nanotechnology Centre of Excellence, Addis Ababa Science and Technology University P. O. Box 1647 Addis Ababa Ethiopia
| | - Enyew Amare Zereffa
- Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University P. O. Box 1888 Adama Ethiopia
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El-Mas SM, Hassaan MA, El-Subruiti GM, Eltaweil AS, El Nemr A. Box-Behnken design optimization of 2D Ti3C2Tx MXene nanosheets as a microwave-absorbing catalyst for methylene blue dye degradation. CHEMICAL ENGINEERING JOURNAL 2024; 500:156969. [DOI: 10.1016/j.cej.2024.156969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2025]
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Negash A, Derseh LM, Tedla A, Yassin JM. Eco-friendly synthesis of CuO/Bi 2O 3 nanocomposite for efficient photocatalytic degradation of rhodamine B dye. Sci Rep 2024; 14:23393. [PMID: 39379438 PMCID: PMC11461685 DOI: 10.1038/s41598-024-74408-2] [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: 07/23/2024] [Accepted: 09/25/2024] [Indexed: 10/10/2024] Open
Abstract
Plant-mediated synthesized materials are receiving more attention than conventional ones due to their wide availability, ease of access, simple preparation methods, environmental benign, and possess superior physicochemical properties. In this work, plant extract-mediated CuO, Bi2O3, and CuO/Bi2O3 nanocomposite samples were successfully synthesized using bamboo leaves extract as a capping agent. These materials were utilized for the photodegradation of Rhodamine B (RhB) dye, which served as a model organic dye pollutant. The physicochemical characterization techniques such as XRD, SEM-EDS, FTIR, and DRS-UV-vis spectrophotometry provide insight into the crystal structure, morphology, surface functional groups, and optical properties. These analyses confirm the effective formation of CuO, Bi2O3, and CuO/Bi2O3 materials. Surprisingly, upon calcination at 450 °C for 4 h, the color of the nanocomposite changed from pale green to gray greenish, providing evidence for the formation of the CuO in CuO/Bi2O3 nanocomposite. The photocatalytic optimization parameters such as pH (4), catalyst load (35 mg), irradiation time (180 min) and concentration of RhB (10 mg L-1) dye were investigated. By coupling CuO with Bi2O3 nanoparticles resulted in an improved photocatalytic property for the degradation of RhB dye under optimal conditions. As a result, CuO/Bi2O3 nanocomposite exhibited a significantly boosted photocatalytic degradation efficiency (95.6%) compared to pure CuO (40.2%) and Bi2O3 (80.5%) photocatalysts, with good reusability. For comparison purpose, the photocatalytic degradation of RhB dye using selected photocatalyst was evaluated under dark and sunlight systems. This eco-friendly approach holds great potential for synthesis new nanocomposite with modified properties, thereby enabling the practical application of high-efficiency photocatalysts. The plausible mechanism of the electrons and holes transfer was proposed.
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Affiliation(s)
- Asfaw Negash
- Department of Chemistry, Debre Berhan University, P.O. Box 445, Debre Berhan, Ethiopia
| | - Lemma M Derseh
- Department of Chemistry, Debre Berhan University, P.O. Box 445, Debre Berhan, Ethiopia
| | - Abebe Tedla
- Department of Chemistry, Debre Berhan University, P.O. Box 445, Debre Berhan, Ethiopia
| | - Jemal M Yassin
- Department of Chemistry, Debre Berhan University, P.O. Box 445, Debre Berhan, Ethiopia.
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Chen LH, Chen XY, Song S, Zhang SF, Zhao YG, Lu Y. Preparation of Magnetic Spongy Porous Carbon Skeleton Materials for Efficient Removal of BTEX. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:18736-18749. [PMID: 39172386 DOI: 10.1021/acs.langmuir.4c02465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Magnetic polymer microspheres have been extensively utilized as separable and highly efficient adsorbents in wastewater treatment. In this study, a series of novel magnetic spongy porous carbon skeleton materials (Mag-SPCS) have been designed and synthesized by acetonitrile suspension precipitation polymerization, which combines the advantages of the acetonitrile precipitation method and the suspension polymerization method. It was demonstrated that the transformation of the material morphology from microspheres to a porous sponge was achieved by a gradual decrease in the usage amount of ethylene glycol. After N,N-dimethyloctadecylamine (C18) was grafted onto the Mag-SPCS materials, the C18-Mag-SPCS materials with a superhigh saturation adsorption capacity and superfast adsorption efficiency were used for the removal of BTEX (toluene, benzene, and para-xylene) in wastewater. Subsequently, the adsorption properties of the composites with different morphologies were evaluated, and the effect of the usage amount of C18 on the adsorption properties of the C18-Mag-SPCS was further investigated. The maximum adsorption capacities of C18-Mag-SPCS for benzene, toluene, and para-xylene were 714.84, 564.32, and 394.48 mg/g, respectively. The adsorption process was conducted in accordance with the proposed secondary and Langmuir models. Finally, the FTIR, XPS, and XRD characterization results before and after adsorption demonstrated that the adsorption mechanism of toluene onto C18-Mag-SPCS was primarily hydrogen bonding, π-π stacking, and van der Waals forces. These findings of the study indicate that the composite material exhibits an ultrahigh saturation adsorption capacity and ultrafast adsorption efficiency, thereby confirming its considerable potential for application in wastewater treatment.
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Affiliation(s)
- Li-Hui Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
| | - Xing-Yi Chen
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
| | - Shuang Song
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shui-Feng Zhang
- Key Laboratory of Biosafety Detection for Zhejiang Market Regulation, Zhejiang Fangyuan Test Group Co., Ltd., Hangzhou 310018, China
| | - Yong-Gang Zhao
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
| | - Yin Lu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
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Ullah I, Khan SS, Ahmad W, Liu L, Rady A, Aldahmash B, Yu C, Wang Y. Silver incorporated SeTe nanoparticles with enhanced photothermal and photodynamic properties for synergistic effects on anti-bacterial activity and wound healing. RSC Adv 2024; 14:18871-18878. [PMID: 38873544 PMCID: PMC11167613 DOI: 10.1039/d4ra01343c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 05/22/2024] [Indexed: 06/15/2024] Open
Abstract
Bacteria invade the host's immune system, thereby inducing serious infections. Current treatments for bacterial infections mostly rely on single modalities, which cannot completely inhibit bacteria. This study evaluates the therapeutic potential of SeTe-Ag NPs, designed with excellent photo responsiveness, with a particular focus on their dual-action antibacterial effect and wound healing properties. SeTe-Ag NPs exhibited promising synergistic antibacterial effects due to their superior photothermal and photodynamic properties. The investigation records substantial zones of inhibition of bacteria, demonstrating potent antibacterial effect. Furthermore, upon the irradiation of near-infrared (NIR) light, SeTe-Ag NPs exhibit remarkable antibiofilm and wound-healing capabilities. Overall, this study shows the applications of NIR-active SeTe-Ag NPs, which serve as a versatile platform for biomedical applications.
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Affiliation(s)
- Irfan Ullah
- College of Life Science and Technology, Beijing University of Chemical Technology No. 15 East Road of North Third Ring Road, Chao Yang District Beijing 100029 China
| | - Shahin Shah Khan
- College of Life Science and Technology, Beijing University of Chemical Technology No. 15 East Road of North Third Ring Road, Chao Yang District Beijing 100029 China
| | - Waqar Ahmad
- College of Life Science and Technology, Beijing University of Chemical Technology No. 15 East Road of North Third Ring Road, Chao Yang District Beijing 100029 China
| | - Luo Liu
- College of Life Science and Technology, Beijing University of Chemical Technology No. 15 East Road of North Third Ring Road, Chao Yang District Beijing 100029 China
| | - Ahmed Rady
- Department of Zoology, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Badr Aldahmash
- Department of Zoology, College of Science, King Saud University P. O. Box 2455 Riyadh 11451 Saudi Arabia
| | - Changyuan Yu
- College of Life Science and Technology, Beijing University of Chemical Technology No. 15 East Road of North Third Ring Road, Chao Yang District Beijing 100029 China
| | - Yushu Wang
- School of Pharmaceutical Sciences, Southern Medical University No. 1023, South Shatai Road Guangzhou 510515 P. R. China
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Sharma P, Ganguly M, Sahu M. Photocatalytic degradation of methyl blue dye with H 2O 2 sensing. RSC Adv 2024; 14:14606-14615. [PMID: 38708118 PMCID: PMC11066736 DOI: 10.1039/d4ra01354a] [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: 02/22/2024] [Accepted: 04/26/2024] [Indexed: 05/07/2024] Open
Abstract
A condensation polymer (urea-formaldehyde resin) passivated ZnO nanoparticles were used as an efficient photocatalyst for methyl blue degradation in the presence of H2O2 involving a Fenton-like reaction. The formation of OH˙ radicals were attributed to the pivotal factor for the degradation process. The method was easy and recyclable. The dose of photocatalyst, initial dye concentration, pH variation, variations of the composition of the photocatalyst, and the effect of scavengers were gauged. The degraded product was highly fluorescent and fluorometric detection of H2O2 was achieved along with a colorimetric recognition pathway. No other dye could be degraded under similar experimental conditions, implying the novel utility of methyl blue for environmental remediation.
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Affiliation(s)
- Priyanka Sharma
- Department of Chemistry, Manipal University Jaipur Jaipur-Ajmer Express Highway, Dehmi Kalan Jaipur Rajasthan 303007 India
| | - Mainak Ganguly
- Department of Chemistry, Manipal University Jaipur Jaipur-Ajmer Express Highway, Dehmi Kalan Jaipur Rajasthan 303007 India
| | - Mamta Sahu
- Department of Chemistry, Manipal University Jaipur Jaipur-Ajmer Express Highway, Dehmi Kalan Jaipur Rajasthan 303007 India
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Adaikalam K, Vikraman D, Lee DH, Cho YA, Kim HS. Optical and UV Shielding Properties of Inorganic Nanoparticles Embedded in Polymethyl Methacrylate Nanocomposite Freestanding Films. Polymers (Basel) 2024; 16:1048. [PMID: 38674968 PMCID: PMC11053758 DOI: 10.3390/polym16081048] [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: 02/26/2024] [Revised: 04/02/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Polymethyl methacrylate (PMMA) is an interesting polymer employed in various applications due to its outstanding properties. However, its electrical and mechanical properties can be further improved by incorporating nanoparticles, and in particular, PMMA nanocomposite with nanoparticles provides various multifunctional properties. This work reports PMMA nanocomposite preparation and structural and optical characterizations incorporating carbon nanotubes (CNTs), TiO2 nanoparticles, and carbon quantum dots (CQDs). CNT/PMMA, TiO2/PMMA, and CQD/PMMA nanocomposite freestanding films were prepared using a simple solution method. Various properties of the prepared composite films were analyzed using scanning electron microscopy, X-ray diffraction, photoluminescence, Fourier transform infrared, and UV-Vis and Raman spectroscopy. Optical parameters and photocatalytic dye degradation for the films are reported, focusing on the properties of the materials. The CNT/PMMA, TiO2/PMMA, and CQD/PMMA films achieved, respectively, good electrical conductivity, photodegradation, and fluorescence compared with other composite films.
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Affiliation(s)
- Kathalingam Adaikalam
- Millimeter-Wave Innovation Technology Research Center, Dongguk University-Seoul, Seoul 04620, Republic of Korea;
| | - Dhanasekaran Vikraman
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (D.V.); (D.-H.L.); (Y.-A.C.)
| | - Du-Hee Lee
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (D.V.); (D.-H.L.); (Y.-A.C.)
| | - Yoon-A Cho
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (D.V.); (D.-H.L.); (Y.-A.C.)
| | - Hyun-Seok Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (D.V.); (D.-H.L.); (Y.-A.C.)
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Shakoor M, Shakoor MB, Jilani A, Ahmed T, Rizwan M, Dustgeer MR, Iqbal J, Zahid M, Yong JWH. Enhancing the Photocatalytic Degradation of Methylene Blue with Graphene Oxide-Encapsulated g-C 3N 4/ZnO Ternary Composites. ACS OMEGA 2024; 9:16187-16195. [PMID: 38617626 PMCID: PMC11007858 DOI: 10.1021/acsomega.3c10172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/06/2024] [Accepted: 03/08/2024] [Indexed: 04/16/2024]
Abstract
Methylene blue (MB) is a toxic contaminant present in wastewater. Here, we prepared various composites of graphene oxide (GO) with graphitic carbon nitride (g-C3N4) and zinc oxide (ZnO) for the degradation of MB. In comparison to ZnO (22.9%) and g-C3N4/ZnO (76.0%), the ternary composites of GO/g-C3N4/ZnO showed 90% photocatalytic degradation of MB under a light source after 60 min. The experimental setup and parameters were varied to examine the process and effectiveness of MB degradation. Based on the results of the experiments, a proposed photocatalytic degradation process that explains the roles of GO, ZnO, and g-C3N4 in improving the photocatalytic efficacy of newly prepared GO/g-C3N4/ZnO was explored. Notably, the g-C3N4/ZnO nanocomposite's surface was uniformly covered with ZnO nanorods. The images of the samples clearly demonstrated the porous nature of GO/g-C3N4/ZnO photocatalysts, and even after being mixed with GO, the g-C3N4/ZnO composite retained the layered structure of the original material. The catalyst's porous structure plausibly enhanced the degradation of the contaminants. The high-clarity production of g-C3N4 and the effectiveness of the synthesis protocol were later validated by the absence of any trace contamination in the energy-dispersive X-ray spectroscopy (EDS) results. The composition of the ZnO elements and their spectra were revealed by the EDS results of the prepared ZnO nanorods, g-C3N4/ZnO, and GO/g-C3N4/ZnO. The outcomes indicated that the nanocomposites were highly uncontaminated and contained all necessary elements to facilitate the transformative process. The results of this experiment could be applied at a large scale, thus proving the effectiveness of photocatalysts for the removal of dyes.
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Affiliation(s)
- Muhammad
Hassan Shakoor
- Department
of Chemistry, Riphah International University, Faisalabad Campus, Faisalabad 38000, Pakistan
| | - Muhammad Bilal Shakoor
- College
of Earth & Environmental Sciences, University
of the Punjab, Lahore 54590, Pakistan
| | - Asim Jilani
- Center
of Nanotechnology, King Abdulaziz University, 21589 Jeddah, Saudi Arabia
| | - Toheed Ahmed
- Department
of Chemistry, Riphah International University, Faisalabad Campus, Faisalabad 38000, Pakistan
| | - Muhammad Rizwan
- Department
of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Mohsin Raza Dustgeer
- Department
of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Javed Iqbal
- Center
of Nanotechnology, King Abdulaziz University, 21589 Jeddah, Saudi Arabia
| | - Muhammad Zahid
- Department
of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan
| | - Jean Wan Hong Yong
- Department
of Biosystems and Technology, Swedish University
of Agricultural Sciences, 23456 Alnarp, Sweden
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Fauzia, Khan MA, Chaman M, Azam A. Antibacterial and sunlight-driven photocatalytic activity of graphene oxide conjugated CeO 2 nanoparticles. Sci Rep 2024; 14:6606. [PMID: 38503811 PMCID: PMC10951321 DOI: 10.1038/s41598-024-54905-0] [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: 10/10/2023] [Accepted: 02/18/2024] [Indexed: 03/21/2024] Open
Abstract
This work focuses on the structural, morphological, optical, photocatalytic, antibacterial properties of pure CeO2 nanoparticles (NPs) and graphene oxide (GO) based CeO2 nanocomposites (GO-1/CeO2, GO-5/CeO2, GO-10/CeO2, GO-15/CeO2), synthesized using the sol-gel auto-combustion and subsequent sonication method, respectively. The single-phase cubic structure of CeO2 NPs was confirmed by Rietveld refined XRD, HRTEM, FTIR and Raman spectroscopy. The average crystallite size was calculated using Debye Scherrer formula and found to increase from 20 to 25 nm for CeO2 to GO-15/CeO2 samples, respectively. The related functional groups were observed from Fourier transform infrared (FTIR) spectroscopy, consistent with the outcomes of Raman spectroscopy. The optical band gap of each sample was calculated by using a Tauc plot, which was observed to decrease from 2.8 to 1.68 eV. The valence state of Ce (Ce3+ and Ce4+) was verified using X-ray photoelectron spectroscopy (XPS) for CeO2 and GO-10/CeO2. The poisonous methylene blue (MB) dye was used to evaluate the photocatalytic activity of each sample in direct sunlight. The GO-15/CeO2 nanocomposite showed the highest photocatalytic activity with rate constant (0.01633 min-1), and it degraded the MB dye molecules by 100% within 120 min. The high photocatalytic activity of this material for degrading MB dye establishes it as an outstanding candidate for wastewater treatment. Further, these nanocomposites also demonstrated excellent antimicrobial activity against Pseudomonas aeruginosa PAO1.
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Affiliation(s)
- Fauzia
- Department of Applied Physics, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh, 202002, India
| | - Mo Ahamad Khan
- Department of Microbiology, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, UP, 202002, India
| | - Mohd Chaman
- Mewat Engineering College, Nuh, Mewat, Haryana, 122107, India
| | - Ameer Azam
- Department of Applied Physics, Z.H. College of Engineering & Technology, Aligarh Muslim University, Aligarh, 202002, India.
- Department of Physics, Faculty of Science, Islamic University of Madinah, 42351, Madinah, Saudi Arabia.
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