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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Djearamane S, Loh ZC, Lee JJ, Wong LS, Rajamani R, Luque PA, Gupta PK, Liang SXT. Remedial Aspect of Zinc Oxide Nanoparticles Against Serratia Marcescens and Enterococcus Faecalis. Front Pharmacol 2022; 13:891304. [PMID: 35747753 PMCID: PMC9209744 DOI: 10.3389/fphar.2022.891304] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/14/2022] [Indexed: 11/20/2022] Open
Abstract
Zinc oxide nanoparticles (ZnO NPs) have been widely used in biomedical applications due to their high biocompatibility and low toxicity to humans. The present work aimed to investigate the antibacterial effects of different concentrations of ZnO NPs on two opportunistic pathogens, Serratia marcescens and Enterococcus faecalis. The surface interaction between nanoparticles and bacterial cell wall, and the subsequent morphological alterations on the bacterial surface, were examined through Fourier transform infrared spectroscopy and scanning electron microscope. The energy dispersive X-ray analysis was used to confirm the elemental composition of ZnO NPs and the cellular accumulation of ZnO NPs in bacteria. The growth-inhibitory test demonstrated a dose-dependent growth inhibitory effect of ZnO NPs against both the test bacteria, as the higher concentration of nanoparticles caused the higher bacterial growth inhibition. The results showed that ZnO NPs caused a higher growth inhibition (63.50 ± 2.50%) on the Gram-positive bacterium E. faecalis compared to the Gram-negative bacterium S. marcescens (51.27 ± 4.56%). Fourier transform infrared spectrum revealed the possible involvement of hydroxyl, carboxyl, amides, methylene, and phosphate groups from the biomolecules of bacterial cell wall such as proteins, carbohydrates, lipids, and phospholipids in the interaction of ZnO NPs on bacterial cell surface. Energy dispersive X-ray analysis showed the higher accumulation of ZnO NPs in E. faecalis than S. marcescens analogous to the bacterial growth inhibition. Scanning electron microscopy images confirmed the antibacterial properties of ZnO NPs, showing the loss of integrity of cell membrane and distortion of bacterial cells. Hence, the potential of ZnO NP as an antibacterial agent against S. marcescens and E. faecalis has been confirmed.
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Affiliation(s)
- Sinouvassane Djearamane
- Department of Biomedical Science, Universiti Tunku Abdul Rahman (UTAR), Kampar, Malaysia
- *Correspondence: Sinouvassane Djearamane,
| | - Zhe Chi Loh
- Department of Biomedical Science, Universiti Tunku Abdul Rahman (UTAR), Kampar, Malaysia
| | - Jun Jie Lee
- Department of Biomedical Science, Universiti Tunku Abdul Rahman (UTAR), Kampar, Malaysia
| | - Ling Shing Wong
- Faculty of Health and Life Sciences, INTI International University, Nilai, Malaysia
| | | | - Priscy Alfredo Luque
- Faculty of Engineering, Architecture, and Design, Autonomous University of Baja California, Mexicali, Mexico
| | - Piyush Kumar Gupta
- Department of Life Sciences, School of Basic Sciences and Research, Sharda University, Greater Noida, India
- Department of Biotechnology, Graphic Era Deemed to be University, Dehradun, India
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Gómez-Gutiérrez CM, Luque PA, Castro-Beltran A, Vilchis-Nestor AR, Lugo-Medina E, Carrillo-Castillo A, Quevedo-Lopez MA, Olivas A. Study of the morphology of ZnS thin films deposited on different substrates via chemical bath deposition. Scanning 2015; 37:389-392. [PMID: 26011683 DOI: 10.1002/sca.21227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/09/2015] [Accepted: 05/11/2015] [Indexed: 06/04/2023]
Abstract
In this work, the influence of substrate on the morphology of ZnS thin films by chemical bath deposition is studied. The materials used were zinc acetate, tri-sodium citrate, thiourea, and ammonium hydroxide/ammonium chloride solution. The growth of ZnS thin films on different substrates showed a large variation on the surface, presenting a poor growth on SiO2 and HfO2 substrates. The thin films on ITO substrate presented a uniform and compact growth without pinholes. The optical properties showed a transmittance of about 85% in the visible range of 300-800 nm with band gap of 3.7 eV.
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Affiliation(s)
| | - P A Luque
- Facultad de Ingenier, í, a, Arquitectura y Diseño, UABC, Ensenada, B.C., México
| | | | - A R Vilchis-Nestor
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Toluca, México
| | - Eder Lugo-Medina
- Departamento de Ingeniería Química, IT de Los Mochis, Los Mochis, Sinaloa, México
| | | | - M A Quevedo-Lopez
- Department of Materials Science and Engineering, UT at Dallas, Richardson, Texas
| | - A Olivas
- Centro de Nanociencias y Nanotecnología-UNAM, Ensenada, B.C., México
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Gómez-Gutiérrez CM, Luque PA, Guerra-Rivas G, López-Sánchez JA, Armenta MA, Quintana JM, Olivas A. Solvothermal synthesis of nickel-tungsten sulfides for 2-propanol dehydration. Scanning 2015; 37:165-71. [PMID: 25676058 DOI: 10.1002/sca.21194] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 01/09/2015] [Indexed: 05/25/2023]
Abstract
The bimetallic nickel-tungsten catalysts were prepared via solvothermal method. The X-ray Diffractometer (XRD) analysis revealed that the corresponding peaks at 14°, 34°, and 58° were for tungsten disulfide (WS2 ) hexagonal phase. The catalysts displayed different crystalline phase with nickel addition, and as an effect the WS2 surface area decreased from 74.7 to 2.0 m(2) g(--1) . In this sense, high-resolution transmission electron microscopy (HRTEM) showed the layers set in direction (002) with an onion-like morphology, and in the center of the particles there is a large amount of nickel contained with 6-8 layers covering it. The catalytic dehydration of 2-propanol was selective to propene in 100% at 250 °C for the sample with 0.7 of atomic ratio of Ni/Ni + W.
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Affiliation(s)
| | - P A Luque
- Facultad de Ingeniería, Arquitectura y Diseño, UABC, Ensenada B.C., México
| | - G Guerra-Rivas
- Facultad de Ingeniería, Arquitectura y Diseño, UABC, Ensenada B.C., México
| | - J A López-Sánchez
- PCeIM, Centro de Nanociencias y Nanotecnología-UNAM, Km. 107 Carretera Tijuana-Ensenada, Ensenada B.C., México
| | - M A Armenta
- PCeIM, Centro de Nanociencias y Nanotecnología-UNAM, Km. 107 Carretera Tijuana-Ensenada, Ensenada B.C., México
| | - J M Quintana
- Facultad de Ciencias Químicas e Ingeniería, UABC, Calzada Universidad, Parque Industrial Internacional Tijuana, Tijuana B.C., México
| | - A Olivas
- Centro de Nanociencias y Nanotecnología - UNAM, Km. 107 Carretera Tijuana-Ensenada, Ensenada B.C., México
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