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Sadat Hosseini M, Yazdani E, Nadafan M. Enhanced third-order nonlinear optical properties of ZnO@C-N composite microspheres. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 322:124799. [PMID: 39029198 DOI: 10.1016/j.saa.2024.124799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 07/01/2024] [Accepted: 07/08/2024] [Indexed: 07/21/2024]
Abstract
We report the third-order nonlinear optical (NLO) properties of ZnO@C-N composite microspheres and pure ZnO which have been investigated with the Z-scan technique under continuous wave laser. ZnO@C-N composite microspheres have been hydrothermally synthesized at two different precursor concentrations to have structures at different impurity levels. Moreover, pure ZnO is prepared under the annealing process. The nonlinear optical absorption of samples was measured by using the open-aperture Z-scan technique and was evaluated relating to the two-photon absorption (TPA) mechanism. Moreover, both ZnO@C-N and ZnO microstructures exhibited a negative nonlinear refractive index (NLR) referring to the self-defocusing effect. The order of the (NLR) value, is about 10-10(cm2/W) and, the NLA coefficients of specimens are in the order of 10-5(cm/W). The NLA coefficient has a similar behavior as the NLR versus increasing incident intensity of the laser. The results show that the nonlinearity response of ZnO@C-N composites is higher than the pure ZnO and ZnO@C-N at higher precursor concentrations exhibits the maximum amount of NLA and NLR coefficients compared to other samples. This observation which is attributed to the change in optical and structural properties of material due to impurity presence, underscores the presence of impurity for engineering materials to improve the nonlinearity properties.
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Affiliation(s)
| | - Elnaz Yazdani
- Department of Physics, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Marzieh Nadafan
- Department of Physics, Faculty of Science, Shahid Rajaee Teacher Training University, Lavizan, P. O. Box 16788-15811, Tehran, Iran.
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Ali Ansari S, Parveen N, Aljaafari A, Alshoaibi A, Alsulaim GM, Waqas Alam M, Zahid Ansari M. Novel furfural-complexed approach to synthesizing carbon-Doped ZnO with breakthrough photocatalytic efficacy. J Adv Res 2024:S2090-1232(24)00357-6. [PMID: 39128701 DOI: 10.1016/j.jare.2024.08.014] [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: 04/04/2024] [Revised: 07/17/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024] Open
Abstract
INTRODUCTION The efficiency of zinc oxide (ZnO) nanoparticles for environmental decontamination is limited by their reliance on ultraviolet (UV) light and rapid charge carrier recombination. Carbon doping has been proposed to address these challenges by potentially enhancing visible light absorption and charge separation. OBJECTIVES This study aims to introduce a novel, single-step synthesis method for carbon-doped ZnO (C-Z) nanoparticles, leveraging the decomposition of zinc nitrate hexahydrate and furfural under a nitrogen atmosphere to improve photocatalytic activity under visible light. METHODS A series of C-Z variants (C-Z-1 to C-Z-5) and an undoped sample (ZnO-0) were synthesized. The influence of furfural on the synthesis process and doping mechanism was analyzed by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and UV-visible diffuse reflectance spectroscopy (DRS). RESULTS XPS confirmed the integration of carbon within the ZnO matrix, and XRD indicated increased lattice dimensions owing to doping. DRS revealed bandgap narrowing, suggesting enhanced charge separation. Among the variants, C-Z-3 significantly outperformed the others, showing a 12-fold increase in the photocatalytic degradation rate of Rhodamine B compared to undoped ZnO. CONCLUSION The developed single-step synthesis method for C-Z nanoparticles represents a major advancement in materials engineering for ecological applications. The enhanced photocatalytic activity under visible light, as demonstrated by C-Z-3, underscores the potential of these nanoparticles for environmental decontamination.
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Affiliation(s)
- Sajid Ali Ansari
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia.
| | - Nazish Parveen
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 380, Hofuf, Al-Ahsa 31982, Saudi Arabia.
| | - Abdullah Aljaafari
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia
| | - Adil Alshoaibi
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia
| | - Ghayah M Alsulaim
- Department of Chemistry, College of Science, King Faisal University, P.O. Box 380, Hofuf, Al-Ahsa 31982, Saudi Arabia
| | - Mir Waqas Alam
- Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi Arabia
| | - Mohd Zahid Ansari
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
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Govindarasu M, Vaiyapuri M, Kim JC. Protective effect of zinc oxide nanoparticles synthesized using Cassia alata for DSS-induced ulcerative colitis in mice model. Bioprocess Biosyst Eng 2024; 47:1393-1407. [PMID: 38942827 DOI: 10.1007/s00449-024-03047-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 06/11/2024] [Indexed: 06/30/2024]
Abstract
The most prevalent form of inflammatory bowel disease (IBD), ulcerative colitis (UC), is characterized by persistent inflammation of the colorectal mucosa. It is asymptomatic, whereas Crohn's disease (CD) causes patchy lesions in the gastrointestinal tract. Men and women suffer equally from ulcerative colitis, which usually strikes in the second and third decades of life and becomes more common in senior citizens. In the present study, we produced zinc oxide nanoparticles using the natural herbal plant, Cassia alata. Zinc oxide nanoparticles have remarkable antimicrobial and antitumor benefits in the field of biomedical science. Furthermore, the synthesized zinc oxide nanoparticles (ZnO NPs) were characterized using UV, XRD, FTIR, and SEM analyses. The XRD analysis confirmed the crystallite nature and purity of the synthesized nanoparticles. Zinc oxide nanoparticles with a uniform size and partially agglomerated morphology were verified by SEM analysis. We investigated the protective effects of environmentally friendly zinc oxide nanoparticles in dextran sodium sulfate-induced ulcerative colitis mouse models. Green synthesized Cassia alata zinc oxide nanoparticles (CA ZnO NPs) reversed weight loss, disease activity index, colon shortening, and colon histological damage. Zinc oxide nanoparticles reduce hypersensitivity, oxidative stress, and inflammation, and protect the mucosal layer. Green synthesized CA ZnO NPs demonstrated protection against dextran sodium sulfate-induced ulcerative colitis via anti-inflammatory activity.
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Affiliation(s)
- Mydhili Govindarasu
- Institute of Forest Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Manju Vaiyapuri
- Department of Biochemistry, Periyar University, Tamil Nadu 636 011, Salem, India
| | - Jin-Chul Kim
- Department of Biomedical Science and Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, 24341, Republic of Korea.
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Chen X, Bagnall D, Nasiri N. Highly Porous ZnO/CNT Hybrid Microclusters for Superior UV Photodetection. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27614-27626. [PMID: 38722974 DOI: 10.1021/acsami.4c02284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The formation of nanoscale junctions among nanoparticles in self-assembled nanostructures is crucial for improving both interfacial conductivity and structural integrity. However, the inherent reliance on weak van der Waals forces to hold nanoparticles together poses challenges in developing commercially viable devices due to their inefficient carrier transport characteristics. This study presents the successful integration of carbon nanotubes (CNTs) into highly porous nanomicrocluster arrays of ZnO, resulting in the formation of cohesive and crack-free highly porous ZnO/CNT heterojunction films. This integration marks a significant improvement in UV photodetection performance, demonstrating a record-high photocurrent to dark current ratio of 3.3 × 106 and an exceptional responsivity of 18.5 A/W at a low bias of 0.5 V and under an ultra low light density of 25 μW/cm2. These findings underscore the efficacy of this high-performance structure as a versatile and scalable platform technology for the rapid, cost-effective fabrication of hybrid photodetectors in wearable and portable devices.
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Affiliation(s)
- Xiaohu Chen
- NanoTech Laboratory, School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
- Smart Green Cities Research Centre, Macquarie University, Sydney 2109, Australia
| | - Darren Bagnall
- Smart Green Cities Research Centre, Macquarie University, Sydney 2109, Australia
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
| | - Noushin Nasiri
- NanoTech Laboratory, School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
- Smart Green Cities Research Centre, Macquarie University, Sydney 2109, Australia
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Rabchinskii MK, Sysoev VV, Brzhezinskaya M, Solomatin MA, Gabrelian VS, Kirilenko DA, Stolyarova DY, Saveliev SD, Shvidchenko AV, Cherviakova PD, Varezhnikov AS, Pavlov SI, Ryzhkov SA, Khalturin BG, Prasolov ND, Brunkov PN. Rationalizing Graphene-ZnO Composites for Gas Sensing via Functionalization with Amines. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:735. [PMID: 38727329 PMCID: PMC11085583 DOI: 10.3390/nano14090735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/03/2024] [Accepted: 04/17/2024] [Indexed: 05/12/2024]
Abstract
The rational design of composites based on graphene/metal oxides is one of the pillars for advancing their application in various practical fields, particularly gas sensing. In this study, a uniform distribution of ZnO nanoparticles (NPs) through the graphene layer was achieved, taking advantage of amine functionalization. The beneficial effect of amine groups on the arrangement of ZnO NPs and the efficiency of their immobilization was revealed by core-level spectroscopy, pointing out strong ionic bonding between the aminated graphene (AmG) and ZnO. The stability of the resulting Am-ZnO nanocomposite was confirmed by demonstrating that its morphology remains unchanged even after prolonged heating up to 350 °C, as observed by electron microscopy. On-chip multisensor arrays composed of both AmG and Am-ZnO were fabricated and thoroughly tested, showing almost tenfold enhancement of the chemiresistive response upon decorating the AmG layer with ZnO nanoparticles, due to the formation of p-n heterojunctions. Operating at room temperature, the fabricated multisensor chips exhibited high robustness and a detection limit of 3.6 ppm and 5.1 ppm for ammonia and ethanol, respectively. Precise identification of the studied analytes was achieved by employing the pattern recognition technique based on linear discriminant analysis to process the acquired multisensor response.
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Affiliation(s)
- Maxim K. Rabchinskii
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
| | - Victor V. Sysoev
- Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., Saratov 410054, Russia; (V.V.S.); (M.A.S.); (A.S.V.)
| | - Maria Brzhezinskaya
- Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany;
| | - Maksim A. Solomatin
- Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., Saratov 410054, Russia; (V.V.S.); (M.A.S.); (A.S.V.)
| | - Vladimir S. Gabrelian
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
| | - Demid A. Kirilenko
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
| | - Dina Yu. Stolyarova
- NRC “Kurchatov Institute”, Akademika Kurchatova pl. 1, Moscow 123182, Russia;
| | - Sviatoslav D. Saveliev
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
- Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., Saratov 410054, Russia; (V.V.S.); (M.A.S.); (A.S.V.)
| | - Alexander V. Shvidchenko
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
| | - Polina D. Cherviakova
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
| | - Alexey S. Varezhnikov
- Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., Saratov 410054, Russia; (V.V.S.); (M.A.S.); (A.S.V.)
| | - Sergey I. Pavlov
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
| | - Sergei A. Ryzhkov
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
- Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya St., Saratov 410054, Russia; (V.V.S.); (M.A.S.); (A.S.V.)
| | - Boris G. Khalturin
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
| | - Nikita D. Prasolov
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
| | - Pavel N. Brunkov
- Ioffe Institute, Politekhnicheskaya St. 26, Saint Petersburg 194021, Russia; (V.S.G.); (D.A.K.); (S.D.S.); (A.V.S.); (P.D.C.); (S.I.P.); (S.A.R.); (B.G.K.); (N.D.P.); (P.N.B.)
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Mohd Raub AA, Bahru R, Mohamed MA, Latif R, Mohammad Haniff MAS, Simarani K, Yunas J. Photocatalytic activity enhancement of nanostructured metal-oxides photocatalyst: a review. NANOTECHNOLOGY 2024; 35:242004. [PMID: 38484390 DOI: 10.1088/1361-6528/ad33e8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/14/2024] [Indexed: 04/04/2024]
Abstract
Nanostructured metal oxide semiconductors have emerged as promising nanoscale photocatalysts due to their excellent photosensitivity, chemical stability, non-toxicity, and biocompatibility. Enhancing the photocatalytic activity of metal oxide is critical in improving their efficiency in radical ion production upon optical exposure for various applications. Therefore, this review paper provides an in-depth analysis of the photocatalytic activity of nanostructured metal oxides, including the photocatalytic mechanism, factors affecting the photocatalytic efficiency, and approaches taken to boost the photocatalytic performance through structure or material modifications. This paper also highlights an overview of the recent applications and discusses the recent advancement of ZnO-based nanocomposite as a promising photocatalytic material for environmental remediation, energy conversion, and biomedical applications.
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Affiliation(s)
- Aini Ayunni Mohd Raub
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | - Raihana Bahru
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | - Mohd Ambri Mohamed
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | - Rhonira Latif
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
| | | | - Khanom Simarani
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Kuala Lumpur, Malaysia
| | - Jumril Yunas
- Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi, 43600, Selangor, Malaysia
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Selvaraj K, Spontón ME, Estenoz DA, Forchetti Casarino A, Veerasamy US, Kumar M, Al-Mohaimeed AM, Al-Onazi WA, Kannaiyan D. Development of quinoline-based heteroatom polybenzoxazines reinforced graphitic carbon nitride (GCN) carbonisation composites for emerging supercapacitor applications. SOFT MATTER 2024; 20:1210-1223. [PMID: 38229512 DOI: 10.1039/d3sm01445b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
The current research described in this paper, focuses on the development of a new quinoline-based Mannich-type benzoxazine and its use to obtain advanced carbonisation materials with a high energy storage capacity. Based on this, a quinoline-based benzoxazine monomer (Q-xda) was synthesised by a reaction between 8-hydroxyquinoline, xylylenediamine and paraformaldehyde, and it is characterised by FT-IR and 1H-NMR spectroscopy. Composites were prepared from the benzoxazine and variable weight percentages of graphitic carbon nitride (GCN) (i.e., 5, 10, and 15 wt%). The oxazine ring-opening curing process of the polybenzoxazine composites, and its subsequent pyrolysis reaction was performed; and their chemical structures were confirmed using FT-IR spectroscopy. Also, the thermal and morphological characteristics of the composites were evaluated by XRD, thermogravimetric analysis (TGA), and SEM analyses. According to the results of the thermal experiments, adding GCN reinforcement significantly increased the thermal stability and char yield of the resultant composites. Electrochemical, and hydrophobic investigations were also carried out, and the results of these suggesting that the composites reinforced with 15 wt% GCN exhibit the highest dielectric constant (high κ = 10.2) and contact angle (145°). However, all the crosslinked composites demonstrated a remarkable electrochemical performance as pseudocapacitors. The resulting poly(Q-xda) + 15 wt% GCN electrodes showed a higher capacitance and a lower transferred charge resistance (i.e., 370 F g-1 at 6 A g-1 and 20.8 Ω) than the poly(Q-xda) electrode (i.e., 216 F g-1 at 6 A g-1 and 26.0 Ω). In addition, the poly(Q-xda) + 15% GCN exhibited a cycling efficiency of 96.2% even after 2000 cycles. From these results, it can be concluded that the constructed electrodes perform well in electrochemical operations.
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Affiliation(s)
- Kumar Selvaraj
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET, Ruta Nacional 168, Km. 0, Santa Fe, 3000, Argentina.
- Facultad de Ingeniería Química, Universidad Nacional del Litoral (UNL), Santiago del Estero 2829, Santa Fe, 3000, Argentina.
| | - Marisa Elisabet Spontón
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET, Ruta Nacional 168, Km. 0, Santa Fe, 3000, Argentina.
- Facultad de Ingeniería Química, Universidad Nacional del Litoral (UNL), Santiago del Estero 2829, Santa Fe, 3000, Argentina.
| | - Diana Alejandra Estenoz
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET, Ruta Nacional 168, Km. 0, Santa Fe, 3000, Argentina.
- Facultad de Ingeniería Química, Universidad Nacional del Litoral (UNL), Santiago del Estero 2829, Santa Fe, 3000, Argentina.
| | - Agustín Forchetti Casarino
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET, Ruta Nacional 168, Km. 0, Santa Fe, 3000, Argentina.
- Facultad de Ingeniería Química, Universidad Nacional del Litoral (UNL), Santiago del Estero 2829, Santa Fe, 3000, Argentina.
| | - Uma Shankar Veerasamy
- Department of Mechanical Engineering, Chiang Mai University, Muang, Chiang Mai 50200, Thailand
| | - Manimaran Kumar
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN), JI. Raya Bogor KM. 46, Cibinong, 16911, Indonesia
| | - Amal M Al-Mohaimeed
- Department of Chemistry, College of Science, King Saud University, Riyadh 11495, Saudi Arabia
| | - Wedad A Al-Onazi
- Department of Chemistry, College of Science, King Saud University, Riyadh 11495, Saudi Arabia
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Fiaz M, Sohail M, Nafady A, Will G, Wahab MA. A facile two-step hydrothermal preparation of 2D/2D heterostructure of Bi 2WO 6/WS 2 for the efficient photodegradation of methylene blue under sunlight. ENVIRONMENTAL RESEARCH 2023; 234:116550. [PMID: 37437862 DOI: 10.1016/j.envres.2023.116550] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/26/2023] [Accepted: 07/02/2023] [Indexed: 07/14/2023]
Abstract
A facile two-step hydrothermal method was successfully used to prepare a photocatalyst Bi2WO6/WS2 heterojunction for methyl blue (MB) photodegradation. Fabricated photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray analysis (EDX), and X-ray photoelectron spectroscopy (XPS). Band gap measurements were carried out by diffuse reflectance spectroscopy (DRS). Results indicated that the prepared heterostructure photocatalyst has increased visible light absorption. Photocatalytic performance was evaluated under sunlight irradiation for methylene blue (MB) degradation as a model dye. Variations in pH (4-10), amount of catalyst (0.025-0.1 g/L), and initial MB concentrations (5-20 ppm) were carried out, whereas all prepared catalysts were used to conduct the tests with a visible spectrophotometer. Degradation activity improved with the pH increase; the optimum pH was approximately 8. Catalyst concentration is directly related to degradation efficiency and reached 93.56% with 0.075 g of the catalyst. Among tested catalysts, 0.01 Bi2WO6/WS2 has exhibited the highest activity and a degradation efficiency of 99.0% in 40 min (min) for MB. MB photodegradation follows pseudo-first-order kinetics, and obtained values of kapp were 0.0482 min-1, 0.0337 min-1, 0.0205 min-1, and 0.0087 min-1 for initial concentrations of 5 ppm, 10 ppm, 15 ppm, and 20 ppm, respectively. The catalyst was reused for six cycles with a negligible decrease in the degradation activity. Heterostructure 0.01 Bi2WO6/WS2 has exhibited a photocurrent density of 16 μA cm-2, significantly higher than 2.0 and 4.5 μA cm-2 for the pristine WS2 and Bi2WO6, respectively. The findings from these investigations may serve as a crucial stepping stone towards the remediation of polluted water facilitated by implementing such highly efficient photocatalysts.
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Affiliation(s)
- Muhammad Fiaz
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan
| | - Manzar Sohail
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan.
| | - Ayman Nafady
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Geoffrey Will
- Energy and Process Engineering Laboratory, School of Mechanical, Medical and Process Engineering, Faculty of Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia
| | - Md A Wahab
- Energy and Process Engineering Laboratory, School of Mechanical, Medical and Process Engineering, Faculty of Science, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4000, Australia.
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Villegas-Fuentes A, Rosillo-de la Torre A, Vilchis-Nestor AR, Luque PA. Improvement of the optical, photocatalytic and antibacterial properties of ZnO semiconductor nanoparticles using different pepper aqueous extracts. CHEMOSPHERE 2023; 339:139577. [PMID: 37480957 DOI: 10.1016/j.chemosphere.2023.139577] [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: 05/08/2023] [Revised: 07/08/2023] [Accepted: 07/17/2023] [Indexed: 07/24/2023]
Abstract
Peppers are fruits that grow on plants of the genus Capsicum and are popular for their use in gastronomy as a condiment and for their anti-inflammatory and anti-cancer properties due to their phytocompounds such as flavonoids, polyphenols, or alkaloids. Semiconductor zinc oxide (ZnO) nanoparticles (NPs) were synthesized using a green approach employing natural aqueous extracts of several varieties of peppers (jalapeño, morita, and ghost). The obtained NPs were characterized by different techniques, and their photocatalytic and antibacterial activity was studied. The signal at 620 cm-1 in the FTIR spectra belonging to the Zn-O bond, the appearance of the main peaks of a hexagonal wurtzite structure in the XRD pattern, and the characteristic signals in the UV-Vis spectra confirm the correct formation of ZnO NPs. The photocatalytic activity was analyzed against Methylene Blue (MB), Rhodamine B (RB), and Methyl Orange (MO) under UV and sunlight. All syntheses were able to degrade more than 93% of the pollutants under UV light. Antibacterial assays were performed against gram-positive and gram-negative bacteria. All syntheses exhibited antibacterial activity against all bacteria and maximum growth inhibition against Bacillus subtilis. The prominent results demonstrate that natural aqueous extracts obtained from peppers can be used to synthesize ZnO NPs with photocatalytic and biomedical applications.
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Affiliation(s)
- A Villegas-Fuentes
- Universidad Autónoma de Baja California, Facultad de Ingeniería, Arquitectura y Diseño, C.P. 22860, Ensenada, B.C, Mexico
| | - A Rosillo-de la Torre
- Universidad de Guanajuato, División de Ciencias e Ingeniería, Loma del Bosque #103, Col. Lomas del campestre, C.P. 37150, León, Gto, Mexico
| | - A R Vilchis-Nestor
- Centro Conjunto de Investigación en Química Sustentable, UAEM-UNAM, Toluca, Mexico
| | - P A Luque
- Universidad Autónoma de Baja California, Facultad de Ingeniería, Arquitectura y Diseño, C.P. 22860, Ensenada, B.C, Mexico.
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10
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Nayak RR, Gupta T, Chauhan RP. Organic waste peel-assisted synthesis of ZnSe nanoparticles for solar-driven photocatalytic degradation of cationic and anionic dye. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:88167-88179. [PMID: 37436625 DOI: 10.1007/s11356-023-28630-6] [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: 01/26/2023] [Accepted: 07/02/2023] [Indexed: 07/13/2023]
Abstract
The environment and public health are currently being threatened by the water pollution caused by dyes. Finding eco-friendly and economically viable photocatalysts has been a hot issue in recent years, as photocatalytic dye degradation is essential for eliminating dye from contaminated water as compared to other methods because of the cost factor and efficiency in removing organic contaminants. Using un-doped ZnSe for degrading activity has very seldom been attempted up to this point. Therefore, the current research focuses on the use of zinc selenide nanomaterials, which are produced via a green synthesis process from the organic waste peels of orange and potato using the hydrothermal method, and utilizes them as photocatalysts for the degradation of dyes using sunlight as a natural source of light. The crystal structure, bandgap, and surface morphology and analysis of the synthesized materials serve as indicators of their characteristics. Citrate in orange peel-mediated synthesis assists in forming a particle size of 1.85 nm and a large surface area of 17.078 m2/g enabling more surface-active sites resulting in degradation efficiency of 97.16% and 93.61% for methylene blue and Congo red dye, respectively, which outperforms commercial ZnSe in the dye degradation. The presented work maintains overall sustainability in real-practical applications by utilizing sunlight in photocatalytic degradation activity instead of sophisticated equipment and using waste peels as a capping and stabilizing agent in the green synthesis method for the preparation of photocatalysts.
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Affiliation(s)
- Ripsa Rani Nayak
- National Institute of Technology, Kurukshetra, Haryana, 136119, India
| | - Tripti Gupta
- National Institute of Technology, Kurukshetra, Haryana, 136119, India
| | - Rishi Pal Chauhan
- National Institute of Technology, Kurukshetra, Haryana, 136119, India.
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11
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Reddy NR, Kumar AS, Reddy PM, Merum D, Kakarla RR, Jung JH, Joo SW, Aminabhavi TM. Sharp-edged pencil type ZnO flowers and BiOI flakes combined with carbon nanofibers as heterostructured hybrid photocatalysts for the removal of hazardous pollutants from contaminated water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 332:117397. [PMID: 36731414 DOI: 10.1016/j.jenvman.2023.117397] [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: 12/12/2022] [Revised: 01/20/2023] [Accepted: 01/26/2023] [Indexed: 06/18/2023]
Abstract
The growth of advanced micro-and nanostructures with metal oxides has consistently generated extraordinary interest in energy and environmental applications. Cutting-edge nanostructures exhibit superior reactive sites and surface areas, thus improving the performance in crucial domains. In this study, sharp-edged pencil-type ZnO flowers and BiOI flakes as pristine materials, and their composition with carbon nanofibers (CNFs) (ZnO-BiOI@CNFs) as a hetero hybrid catalyst as well as binary compositions such as ZnO-BiOI, ZnO@CNFs, and BiOI@CNFs catalysts were fabricated using a simple and convenient hydrothermal synthesis process. The composition of newly produced innovative nanostructures was examined for azo dye degradation under solar simulator exposure. Dye degradation of ∼95% was achieved by the hybrid catalyst (ZnO-BiOI@CNFs) during 120 min of irradiation, which was ∼1.8 and 2.1-times higher than pristine ZnO and BiOI nanostructures, respectively. The improved hybrid catalysts were able to degrade methyl orange (MO) and rhodamine B (RhB) dyes. Importantly, mixed dyes RhB, MO, and azo dye demonstrated 47% dye degradation using a hybrid catalyst. These mixed dye-scalable hybrid catalyst performances offer additional insights into commercialization/industrialization. The outstanding performance of the hybrid catalyst is attributed to the unidirectional electron flow with pencil-like ZnO, a catalyst with a larger absorption zone, high surface area, and reactive sites, particularly ZnO and BiOI nanostructures, and decreased recombination rate with a heterojunction interface. In addition, CNFs can operate as electron traps and sinks, providing very quick redox reactions. To produce the sophisticated nanostructures with homogeneous morphologies, this work presents new insights into energy and environmental applications.
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Affiliation(s)
- N Ramesh Reddy
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - A Sai Kumar
- Department of Physics, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - P Mohan Reddy
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Dhananjaya Merum
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Raghava Reddy Kakarla
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Jae Hak Jung
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Sang Woo Joo
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Tejraj M Aminabhavi
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, 580031, Karnataka, India; University Center for Research & Development (UCRO), Chandigarh University, Gharuan, Mohali, 140413, Punjab, 140 413, India.
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12
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Rao BK. Site specific interactions of amino acids with (ZnO) 12 cluster: Density functional approach. J Biomol Struct Dyn 2022; 40:13325-13333. [PMID: 34613890 DOI: 10.1080/07391102.2021.1987327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The Stability and electronic properties of bio-hybrid molecules are investigated in the framework of the first-principles density functional theory. The site-specific interactions between (ZnO)12 nano-cluster and arginine/aspartic acid are investigated. There are partially ionic and covalent bonds between the interacting atoms, higher binding energy 8.86 eV is observed at -COOH site of arginine, and 7.60 eV at -CN site of aspartic acid during the interaction with a nano-cluster. Higher HOMO-LUMO gap 4.3 eV is found in arginine, and smaller 2.6 eV in a cluster, it becomes zero with -COOH site of arginine, and 0.8 eV at -CN site of aspartic acid during the formation of bio-hybrids, i.e. highly stable amino acids arg/asp-nano-cluster (ZnO)12 bio-hybrids are formed with small forbidden energy-gap. This study will support in the formation of drugs which will improve the response in wound healing, immune functioning in burn injuries, and in the treatment of bone dysfunction.HighlightsThe binding energy is higher in a bio-hybrid at -COOH site of Arg, and -CN site of Asp.HOMO-LUMO gap is higher in a pristine Arg (4.3 eV), smaller in a cluster (2.6 eV), zero gap in a bio-hybrid with -COOH site of Arg, smaller 0.8 eV at -CN site of Asp.Higher binding energy is found with the small forbidden energy-gap of bio-hybrid molecules.This study will support in the formation of drugs which will improve the response in wound healing, immune functioning in burn injuries, and in the treatment of bone dysfunction.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- B Keshav Rao
- Department of Applied Physics, Shri Shankaracharya Technical Campus, Bhilai, Chhattisgarh, India
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13
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Kavitha G, Vinothkumar J, Pavithra S, Komal M, Sherlin Nivetha M, Kayalvizhi R, Abirami N. Biogenic synthesis of argentum nanocomposites for visible light photocatalyst of dye degradation. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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Shinde SB, Dhengale SD, Nille OS, Jadhav SS, Gore AH, Bhosale TR, Birajdar NB, Kolekar SS, Kolekar GB, V Anbhule P. Template free synthesis of mesoporous carbon from fire cracker waste and designing of ZnO-Mesoporous carbon photocatalyst for dye (MO) degradation. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Atchudan R, Perumal S, Edison TNJI, Albasher G, Sundramoorthy AK, Vinodh R, Lee YR. Lotus-biowaste derived sulfur/nitrogen-codoped porous carbon as an eco-friendly electrocatalyst for clean energy harvesting. ENVIRONMENTAL RESEARCH 2022; 214:113910. [PMID: 35870499 DOI: 10.1016/j.envres.2022.113910] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
Recent research is focused on biomass-derived porous carbon materials for energy harvesting (hydrogen evolution reaction) because of their cost-effective synthesis, enriched with heteroatoms, lightweight, and stable properties. Here, the synthesis of porous carbon (PC) materials from lotus seedpod (LP) and lotus stem (LS) is reported by the pyrolysis method. The porous and graphitic structure of the prepared LP-PC and LS-PC materials were confirmed by field emission scanning electron microscopy, transmission electron microscopy with selected area electron diffraction, X-ray diffraction, and nitrogen adsorption-desorption measurements. Heteroatoms in LP-PC and LS-PC materials were investigated by attenuated total reflection-Fourier transform infrared and X-ray photoelectron spectroscopy. The specific surface area of LP-PC and LS-PC were calculated as 457 and 313 m2 g-1, respectively. Nitrogen and sulfur enriched LP-PC and LS-PC materials were found to be effective electrocatalysts for hydrogen evolution reactions. LP-PC catalyst showed a very low overpotential of 111 mV with the Tafel slope of 69 mV dec-1, and LS-PC catalyst achieved a Tafel slope of 85 mV dec-1 with a low overpotential of 135 mV. This work is expected to be extended for the development of biomass as a sustainable porous carbon electrocatalyst with a tunable structure, elements, and electronic properties. Furthermore, preparing carbon materials from the biowaste and applying clean energy harvesting might reduce environmental pollution.
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Affiliation(s)
- Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Suguna Perumal
- Department of Chemistry, Sejong University, Seoul, 143747, Republic of Korea.
| | | | - Gadah Albasher
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ashok K Sundramoorthy
- Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Velappanchavadi, Chennai, 600077, Tamil Nadu, India
| | - Rajangam Vinodh
- School of Electrical and Computer Engineering, Pusan National University, Busan, 46241, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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16
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Kamarasu L, Sree Nannapaneni S, Arunachalam S, Arumugam P, Kumar Katari N. GCN decorated manganese oxide for photocatalytic degradation of methylene blue. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Carbon Quantum Dots Bridged TiO2/CdIn2S4 toward Photocatalytic Upgrading of Polycyclic Aromatic Hydrocarbons to Benzaldehyde. Molecules 2022; 27:molecules27217292. [PMID: 36364119 PMCID: PMC9653999 DOI: 10.3390/molecules27217292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/22/2022] [Accepted: 10/23/2022] [Indexed: 11/29/2022] Open
Abstract
Conversion of hazardous compounds to value-added chemicals using clean energy possesses massive industrial interest. This applies especially to the hazardous compounds that are frequently released in daily life. In this work, a S-scheme photocatalyst is optimized by rational loading of carbon quantum dots (CQDs) during the synthetic process. As a bridge, the presence of CQDs between TiO2 and CdIn2S4 improves the electron extraction from TiO2 and supports the charge transport in S-scheme. Thanks to this, the TiO2/CQDs/CdIn2S4 presents outstanding photoactivity in converting the polycyclic aromatic hydrocarbons (PAHs) released by cigarette to value-added benzaldehyde. The optimized photocatalyst performs 87.79% conversion rate and 72.76% selectivity in 1 h reaction under a simulated solar source, as confirmed by FT-IR and GC-MS. A combination of experiments and theoretical calculations are conducted to demonstrate the role of CQDs in TiO2/CQDs/CdIn2S4 toward photocatalysis.
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18
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Abbasi S, Dastan D, Ţălu Ş, Tahir MB, Elias M, Tao L, Li Z. Evaluation of the dependence of methyl orange organic pollutant removal rate on the amount of titanium dioxide nanoparticles in MWCNTs-TiO 2 photocatalyst using statistical methods and Duncan’s multiple range test. INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY 2022. [DOI: 10.1080/03067319.2022.2060085] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sedigheh Abbasi
- Central Research Laboratory, Esfarayen University of Technology, Esfarayen, North Khorasan, Iran
| | - Davoud Dastan
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Ştefan Ţălu
- The Directorate of Research, Development and Innovation Management (DMCDI), Technical University of Cluj-Napoca,Cluj-Napoca, Romania
| | - M. B. Tahir
- Department of Physics, Khwaja Fareed University of Engineering and Information Technology Rahim yar Khan, Pakistan
| | - Md. Elias
- Department of Chemistry, Jagannath University, Dhaka, Bangladesh
| | - Lin Tao
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, Liaoning, China
| | - Zhi Li
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, Liaoning, People’s Republic of China
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19
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Arumugam B, Nagarajan V, Nattamai Perumal K, Annaraj J, Kannan Ramaraj S. Fabrication of wurtzite ZnO embedded functionalized carbon black as sustainable electrocatalyst for detecting endocrine disruptor trichlorophenol. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Venkatesan S, Suresh S, Ramu P, Kandasamy M, Arumugam J, Thambidurai S, Prabu K, Pugazhenthiran N. Biosynthesis of zinc oxide nanoparticles using Euphorbia milii leaf constituents: Characterization and improved photocatalytic degradation of methylene blue dye under natural sunlight. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Khosravi M, Saeednia S, Iranmanesh P, Hatefi Ardakani M. Cauliflower-like Nickel Sulfide Nanostructures: Preparation, Optical Properties, Catalytic and Photocatalytic Activities. J CLUST SCI 2022. [DOI: 10.1007/s10876-021-02210-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Kitchen Waste Derived Porous Nanocarbon Spheres for Metal Free Degradation of Azo Dyes: An Environmental Friendly, Cost Effective Method. J CLUST SCI 2022. [DOI: 10.1007/s10876-021-02208-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Intrinsically inert hyperbranched interlayer for enhanced stability of organic solar cells. Sci Bull (Beijing) 2022; 67:171-177. [DOI: 10.1016/j.scib.2021.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/07/2021] [Accepted: 09/15/2021] [Indexed: 11/20/2022]
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24
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Huang R, Zhang M, Zheng Z, Wang K, Liu X, Chen Q, Luo D. Photocatalytic Degradation of Tobacco Tar Using CsPbBr3 Quantum Dots Modified Bi2WO6 Composite Photocatalyst. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2422. [PMID: 34578738 PMCID: PMC8472219 DOI: 10.3390/nano11092422] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/07/2021] [Accepted: 09/14/2021] [Indexed: 11/16/2022]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) in tobacco tar are regarded as a significant threat to human health. PAHs are formed due to the incomplete combustion of organics in tobacco and cigarette paper. Herein, for the first time, we extended the application of CsPbBr3 quantum dots (CsPbBr3) to the photocatalytic degradation of tobacco tar, which was collected from used cigarette filters. To optimize the photoactivity, CsPbBr3 was coupled with Bi2WO6 for the construction of a type-II photocatalyst. The photocatalytic performance of the CsPbBr3/Bi2WO6 composite was evaluated by the degradation rate of PAHs from tobacco tar under simulated solar irradiation. The results revealed that CsPbBr3/Bi2WO6 possesses a large specific surface area, outstanding absorption ability, good light absorption and rapid charge separation. As a result, in addition to good stability, the composite photocatalyst performed remarkably well in degrading PAHs (over 96% were removed in 50 mins of irradiation by AM 1.5 G). This study sheds light on promising novel applications of halide perovskite.
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Affiliation(s)
- Runda Huang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China; (R.H.); (Z.Z.); (Q.C.)
| | - Menglong Zhang
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, China
| | - Zhaoqiang Zheng
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China; (R.H.); (Z.Z.); (Q.C.)
| | - Kunqiang Wang
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Huangpu Hydrogen Innovation Center, Guangzhou University, Guangzhou 510006, China;
| | - Xiao Liu
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, China
| | - Qizan Chen
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China; (R.H.); (Z.Z.); (Q.C.)
| | - Dongxiang Luo
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China; (R.H.); (Z.Z.); (Q.C.)
- School of Chemistry and Chemical Engineering, Institute of Clean Energy and Materials, Guangzhou Key Laboratory for Clean Energy and Materials, Huangpu Hydrogen Innovation Center, Guangzhou University, Guangzhou 510006, China;
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25
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Comparison Study of Cytotoxicity of Bare and Functionalized Zinc Oxide Nanoparticles. Int J Mol Sci 2021; 22:ijms22179529. [PMID: 34502438 PMCID: PMC8431566 DOI: 10.3390/ijms22179529] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/29/2021] [Accepted: 08/30/2021] [Indexed: 01/16/2023] Open
Abstract
In this paper, a study of the cytotoxicity of bare and functionalized zinc oxide nanoparticles (ZnO NPs) is presented. The functionalized ZnO NPs were obtained by various types of biological methods including microbiological (intra- and extracellular with Lactobacillus paracasei strain), phytochemical (Medicago sativa plant extract) and biochemical (ovalbumin from egg white protein) synthesis. As a control, the bare ZnO NPs gained by chemical synthesis (commercially available) were tested. The cytotoxicity was measured through the use of (3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) dye as well as lactate dehydrogenase (LDH) assays against murine fibroblast L929 and Caco-2 cell lines. As a complementary method, scanning electron microscopy (SEM) was performed to assess the morphology of the tested cells after treatment with ZnO NPs. The microscopic data confirmed the occurrence of apoptotic blebbing and loss of membrane permeability after the administration of all ZnO NPs. The reactive oxygen species (ROS) concentration during the cell lines’ exposure to ZnO NPs was measured fluorometrically. Additionally, the photocatalytic degradation of methylene blue (MB) dye in the different light conditions, as well as the antioxidant activity of bare and functionalized ZnO NPs, is also reported. The addition of all types of tested ZnO NPs to methylene blue resulted in enhanced rates of photo-degradation in the presence of both types of irradiation, but the application of UV light resulted in higher photocatalytic activity of ZnO NPs. Furthermore, bare (chemically synthetized) NPs have been recognized as the strongest photocatalysts. In the context of the obtained results, a mechanism underlying the toxicity of bio-ZnO NPs, including (a) the generation of reactive oxygen species and (b) the induction of apoptosis, is proposed.
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26
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Singh A, Nenavathu BP, Irfan, Mohsin M. Facile synthesis of Te-doped ZnO nanoparticles and their morphology-dependent antibacterial studies. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-021-01654-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Alanazi HS, Ahmad N, Alharthi FA. Synthesis of Gd/N co-doped ZnO for enhanced UV-vis and direct solar-light-driven photocatalytic degradation. RSC Adv 2021; 11:10194-10202. [PMID: 35423487 PMCID: PMC8695734 DOI: 10.1039/d0ra10698d] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 03/03/2021] [Indexed: 01/09/2023] Open
Abstract
The construction of a UV-Vis and direct sunlight functioning photocatalyst is a puzzling task for organic pollutant removal. Herein, we have fabricated Gd/N co-doped ZnO nanoparticles for the first-time using a simple co-precipitation method for photocatalytic degradation application. The heteroatom doping enhances the light absorption ability and acts as a photo-induced electron-hole separator by creating a trap state. Co-doped ZnO shows comparatively high photocatalytic degradation efficiency of about 87% and 93% under UV-Vis and direct solar light respectively. Moreover, the prepared photocatalyst exhibits excellent stability for the recycling process. Hence, we believe that this heteroatom co-doped ZnO photocatalyst is an auspicious material for the photocatalytic organic pollutant degradation reaction.
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Affiliation(s)
- Hamdah S Alanazi
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Kingdom of Saudi Arabia
| | - Naushad Ahmad
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Kingdom of Saudi Arabia
| | - Fahad A Alharthi
- Department of Chemistry, College of Science, King Saud University Riyadh 11451 Kingdom of Saudi Arabia
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28
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Dash D, Panda NR, Sahu D. Sm3+ driven enhancement in photocatalytic degradation of hazardous dyes and photoluminescence properties of hexagonal-ZnO nanocolumns. NANO EXPRESS 2021. [DOI: 10.1088/2632-959x/abd90b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Abstract
Samarium doped ZnO (Sm-ZnO) nanocolumns were grown by wet chemical method and the doping effect of Sm3+ on visible light photocatalytic (PC) and photoluminescence (PL) properties of ZnO was investigated. Methylene blue (MB) and methyl orange (MO) were considered for the degradation study as a step initiated towards the remediation of industrial wastewater. Subsequent characterization studies by x-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) enumerate that the hexagonal-wurtzite structured Sm-ZnO is highly crystalline in nature and possesses hexagonal column like nano-architectures. Although, a charge imbalance exists between the ions, the substitutional effects of Sm3+ at Zn2+ sites have been observed from the XRD spectra and discussed by suitable mechanisms. FTIR measurement gives the information on the evolution of peaks related to metal-oxygen bond in Sm-ZnO which may be linked with Sm ions. PC measurement shows that the degradation efficiency of 95% can be achieved by Sm-ZnO photocatalysts in degrading MB and 91% for MO. Sm doping induces high charge separation efficiency and generation of OH ions in ZnO leading to such improvisation in degradation efficiency. The prepared Sm-ZnO nanocatalysts possess high degree of photostability and reusability even after fourth cycle of photodegradation. PL spectra show the suppression of the sharp and intense excitonic emission band of ZnO in Sm-ZnO due to low rated direct recombination of carriers. Incorporation of Sm3+ ends up with intrinsic defect mediated enhancement in the visible emissions especially in the blue, yellow and red region of light spectrum.
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29
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Soundharraj P, Dhinasekaran D, Rajendran AR, Prakasarao A, Ganesan S. N-Doped zinc oxide as an effective fluorescence sensor for urea detection. NEW J CHEM 2021. [DOI: 10.1039/d1nj00372k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This paper reports on the development of N-doped zinc oxide nanoparticle (N–ZnO) based optical biosensor for selective urea detection.
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Affiliation(s)
| | | | - Ajay Rakkesh Rajendran
- Department of Physics and Nanotechnology
- SRM Institute of Science and Technology
- Chennai
- India
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30
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Kumar B, Kumar S, Singh V, Vohra A, Chauhan N, Goyal R. Preparation of strontium doped mesoporous ZnO nanoparticles to investigate their dye degradation efficiency. NANO EXPRESS 2020. [DOI: 10.1088/2632-959x/abc393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Mesoporous strontium doped ZnO nanoparticles are synthesized as photocatalyst by using zinc nitrate hexahydrate, surfactant P123, strontium nitrate hexahydrate via the hydrothermal process. X-ray diffraction (XRD), UV-visible spectroscopy (UV), Fourier transform infrared (FTIR), Photoluminescence (PL), Energy-dispersive x-ray (EDX), Scanning electron microscopy (SEM), Transmission Electron Microscopy (TEM), and Brunauer–Emmett–Teller (BET) characterizations are used for the analysis of all the samples. XRD spectra disclose the disparity in the crystal size 14.98 to 22.74 nm. The study of UV spectroscopy revealed the energy bandgap difference between 3.3–2.92 eV. PL spectroscopy shows the effect of doping on the electron-hole recombination rate of the sample. FTIR analysis has utilized to determine the functional groups such as –OH, C=O=C, and –C–O present in the sample. EDX spectra show the elemental compositions of the sample. SEM images show the agglomerated morphology and TEM images show the different shape morphology of the sample. BET analysis shows the occurrence of 39.9 m2 g−1 surface area with mesoporous morphology. The effect of the increasing percentage of strontium on the photocatalytic capability of ZnO is checked against methylene blue and congo red dyes with 75% and 80% degradation.
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Beniwal A. SnO 2-ZnO-Fe 2O 3 tri-composite based room temperature operated dual behavior ammonia and ethanol sensor for ppb level detection. NANOSCALE 2020; 12:19732-19745. [PMID: 32966499 DOI: 10.1039/d0nr05389a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this paper, we present a novel room temperature (RT) operated SnO2-ZnO-Fe2O3 based tri-composite analyte sensor with dual behavior having detection ability of up to ∼1 ppb with a substantial % response (R) to detect ammonia and ethanol vapors. The tri-composite is synthesized via a sol-gel spin coating technique and characterized using X-ray diffraction (XRD) for structural analysis. Fourier transform infrared spectroscopy (FTIR) and Raman results are used to confirm tri-composite formation. Further, field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM) and atomic force microscopy (AFM) results are used for examining the detailed surface morphology and structural and topographical characteristics of the tri-composite. The sensing characteristics are monitored from 1 ppb to 50 ppm for ammonia detection and 1 ppb to 25 ppm for ethanol detection at RT (∼27 °C) under ∼45% relative humidity (RH) conditions. This dual sensing behavior (based on change in resistance under ammonia and ethanol exposure) of the sensor is used to differentiate and detect the presence of ammonia (resistance decreases) and ethanol (resistance increases) with high %R within a few seconds. In addition, the sensor showed excellent sensing characteristics under moist conditions (up to 85% RH) and outstanding reproducibility, and was found to be highly stable, selective and specific towards the target analytes. This work not only reports a RT operated ppb level ammonia and ethanol sensor, but also explores the novel SnO2-ZnO-Fe2O3 tri-composite along with a scientific approach towards multi-composite nanostructures to develop analyte sensors.
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Affiliation(s)
- Ajay Beniwal
- Department of Electronics and Communication Engineering, Indian Institute of Information Technology - Allahabad, Prayagraj, 211015, India.
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Yaqoob AA, Mohd Noor NHB, Serrà A, Mohamad Ibrahim MN. Advances and Challenges in Developing Efficient Graphene Oxide-Based ZnO Photocatalysts for Dye Photo-Oxidation. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E932. [PMID: 32408530 PMCID: PMC7279554 DOI: 10.3390/nano10050932] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 02/07/2023]
Abstract
The efficient remediation of organic dyes from wastewater is increasingly valuable in water treatment technology, largely owing to the tons of hazardous chemicals currently and constantly released into rivers and seas from various industries, including the paper, pharmaceutical, textile, and dye production industries. Using solar energy as an inexhaustible source, photocatalysis ranks among the most promising wastewater treatment techniques for eliminating persistent organic pollutants and new emerging contaminants. In that context, developing efficient photocatalysts using sunlight irradiation and effectively integrating them into reactors, however, pose major challenges in the technologically relevant application of photocatalysts. As a potential solution, graphene oxide (GO)-based zinc oxide (ZnO) nanocomposites may be used together with different components (i.e., ZnO and GO-based materials) to overcome the drawbacks of ZnO photocatalysts. Indeed, mounting evidence suggests that using GO-based ZnO nanocomposites can promote light absorption, charge separation, charge transportation, and photo-oxidation of dyes. Despite such advances, viable, low-cost GO-based ZnO nanocomposite photocatalysts with sufficient efficiency, stability, and photostability remain to be developed, especially ones that can be integrated into photocatalytic reactors. This article offers a concise overview of state-of-the-art GO-based ZnO nanocomposites and the principal challenges in developing them.
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Affiliation(s)
- Asim Ali Yaqoob
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia; (A.A.Y.); (N.H.b.M.N.)
| | | | - Albert Serrà
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Mechanics of Materials and Nanostructures, Feuerwerkerstrasse 39, CH-3602 Thun, Switzerland
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