1
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Khalid H, Haq AU, Naqvi SAR, Usman M, Bokhari TH. Enhancement of photocatalytic activity of Ba-doped CoO for degradation of Emamectin benzoate in aqueous solution. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1245. [PMID: 37737954 DOI: 10.1007/s10661-023-11864-9] [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: 03/10/2023] [Accepted: 09/11/2023] [Indexed: 09/23/2023]
Abstract
The present study was focused on the preparation of cobalt oxide (CoO) and barium-doped cobalt oxide (Ba-doped CoO) by following the co-precipitation method for the degradation of Emamectin benzoate pesticide in the aqueous medium. The prepared catalysts were characterized using SEM, EDX, and XRD to confirm the formation of catalysts and to observe the variation in the composition of catalysts during the degradation study. It can be suggested from the results of SEM, EDX, XRD, and FTIR analyses that Ba atom has successfully incorporated in the crystalline structure of CoO. The degradation of Emamectin benzoate pesticide was studied under the influence of different factors like solution pH, the dose of catalyst, contact time, temperature, and initial concentration of pesticide. It was observed that solution pH affects the degradation of the pesticide, and maximum degradation (23% and 54%) was found at pH 5.0 and 6.0 using CoO and Ba-doped CoO, respectively. The degradation of pesticides was found to be increased continuously (27-35% in case of CoO while 47-58% in case Ba-doped CoO) with the time of contact. However, the degradation was found to be decreased (23-3% in case of CoO while 47-44% in case Ba-doped CoO) with an increase in temperature. Likewise, in the beginning, degradation was observed to be increased up to some extent with the dose of catalyst and initial concentration of pesticide but started to decrease with further augmentation in the dose of catalyst and initial concentration of pesticide. It may be concluded from this study that doping of Ba considerably enhanced the photocatalytic ability of CoO for Emamectin benzoate pesticide.
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Affiliation(s)
- Huma Khalid
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Atta Ul Haq
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan.
| | - Syed Ali Raza Naqvi
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Usman
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
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2
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Kosmulski M. The pH dependent surface charging and points of zero charge. X. Update. Adv Colloid Interface Sci 2023; 319:102973. [PMID: 37573830 DOI: 10.1016/j.cis.2023.102973] [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: 05/26/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023]
Abstract
Surfaces are often characterized by their points of zero charge (PZC) and isoelectric points (IEP). Different authors use these terms for different quantities, which may be equal to the actual PZC under certain conditions. Several popular methods lead to results which are inappropriately termed PZC. This present review is limited to zero-points obtained in the presence of inert electrolytes (halides, nitrates, and perchlorates of the 1st group metals). IEP are reported for all kinds of materials. PZC of metal oxides obtained as common intersection points of potentiometric curves for 3 or more ionic strengths (or by means of equivalent methods) are also reported, while the apparent PZC obtained by mass titration, pH-drift method, etc. are deliberately neglected. The results published in the recent publications and older results overlooked in the previous compilations by the same author are reported. The PZC/IEP are accompanied by information on the temperature and on the nature and concentration of supporting electrolyte (if available). The references to previous reviews by the same author allow to compare the newest results with the PZC/IEP of similar materials from the older literature.
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Affiliation(s)
- Marek Kosmulski
- Lublin University of Technology, Nadbystrzycka 38, PL-20618 Lublin, Poland.
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3
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Gao X, Yin H, Guo C, Yan B, Li M, Xin L, Wu Z. Comprehensive removal of various dyes by thiourea modified chitosan/nano ZnS composite via enhanced photocatalysis: Performance and mechanism. Int J Biol Macromol 2023; 247:125677. [PMID: 37406916 DOI: 10.1016/j.ijbiomac.2023.125677] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/28/2023] [Accepted: 07/01/2023] [Indexed: 07/07/2023]
Abstract
Dyeing wastewater is a carcinogenic pollutant, which is widely known for its harmful effects on humans and marine organisms. In this study, a novel composite was prepared by blending thiourea modified chitosan with zinc sulfide nanoparticles (T-CS/ZnS) to comprehensively remove methyl orange (MO), rhodamine B (Rh B), and methylene blue (MB) effectively. Characterization results suggested that the synthesized composite has an irregular and rough surface that provided high specific surface area for adsorption process, while the strong optical response and low bandgap width contributed to the subsequent photocatalytic degradation of adsorbed dye molecules. Under optimum experimental conditions, the removal rates of MO, Rh B, and MB were 99.59 %, 99.49 %, and 91.04 %, respectively. Amino and hydroxyl groups provide electrons in photocatalytic reactions. The reaction process is consistent with the quasi-first-order kinetic model, and the material has good stability and regeneration potential. This study indicated that T-CS/ZnS composite is a highly effective material for the treatment of dyeing wastewaters.
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Affiliation(s)
- Xiangpeng Gao
- Engineering Research Center of Biofilm Water Purification and Utilization Technology of Ministry of Education, Anhui University of Technology, Ma'anshan, Anhui 243032, China; School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Huiqing Yin
- Engineering Research Center of Biofilm Water Purification and Utilization Technology of Ministry of Education, Anhui University of Technology, Ma'anshan, Anhui 243032, China; School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Cheng Guo
- Engineering Research Center of Biofilm Water Purification and Utilization Technology of Ministry of Education, Anhui University of Technology, Ma'anshan, Anhui 243032, China; School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Boting Yan
- School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Mingyang Li
- School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Lili Xin
- Engineering Research Center of Biofilm Water Purification and Utilization Technology of Ministry of Education, Anhui University of Technology, Ma'anshan, Anhui 243032, China; School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China
| | - Zhaoyang Wu
- Engineering Research Center of Biofilm Water Purification and Utilization Technology of Ministry of Education, Anhui University of Technology, Ma'anshan, Anhui 243032, China; School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, Anhui 243032, China.
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4
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Gomes BR, Lopes JL, Coelho L, Ligonzo M, Rigoletto M, Magnacca G, Deganello F. Development and Upscaling of SiO 2@TiO 2 Core-Shell Nanoparticles for Methylene Blue Removal. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2276. [PMID: 37630862 PMCID: PMC10458987 DOI: 10.3390/nano13162276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023]
Abstract
SiO2@TiO2 core-shell nanoparticles were successfully synthesized via a simple, reproducible, and low-cost method and tested for methylene blue adsorption and UV photodegradation, with a view to their application in wastewater treatment. The monodisperse SiO2 core was obtained by the classical Stöber method and then coated with a thin layer of TiO2, followed by calcination or hydrothermal treatments. The properties of SiO2@TiO2 core-shell NPs resulted from the synergy between the photocatalytic properties of TiO2 and the adsorptive properties of SiO2. The synthesized NPs were characterized using FT-IR spectroscopy, HR-TEM, FE-SEM, and EDS. Zeta potential, specific surface area, and porosity were also determined. The results show that the synthesized SiO2@TiO2 NPs that are hydrothermally treated have similar behaviors and properties regardless of the hydrothermal treatment type and synthesis scale and better performance compared to the SiO2@TiO2 calcined and TiO2 reference samples. The generation of reactive species was determined by EPR, and the photocatalytic activity was evaluated by the methylene blue (MB) removal in aqueous solution under UV light. Hydrothermally treated SiO2@TiO2 showed the highest adsorption capacity and photocatalytic removal of almost 100% of MB after 15 min in UV light, 55 and 89% higher compared to SiO2 and TiO2 reference samples, respectively, while the SiO2@TiO2 calcined sample showed 80%. It was also observed that the SiO2-containing samples showed a considerable adsorption capacity compared to the TiO2 reference sample, which improved the MB removal. These results demonstrate the efficient synergy effect between SiO2 and TiO2, which enhances both the adsorption and photocatalytic properties of the nanomaterial. A possible photocatalytic mechanism was also proposed. Also noteworthy is that the performance of the upscaled HT1 sample was similar to one of the lab-scale synthesized samples, demonstrating the potentiality of this synthesis methodology in producing candidate nanomaterials for the removal of contaminants from wastewater.
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Affiliation(s)
- Bárbara R. Gomes
- CeNTItvc—Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal; (B.R.G.); (J.L.L.)
| | - Joana L. Lopes
- CeNTItvc—Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal; (B.R.G.); (J.L.L.)
| | - Lorena Coelho
- CeNTItvc—Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal; (B.R.G.); (J.L.L.)
| | - Mattia Ligonzo
- Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy; (M.L.); (M.R.); (G.M.)
| | - Monica Rigoletto
- Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy; (M.L.); (M.R.); (G.M.)
| | - Giuliana Magnacca
- Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy; (M.L.); (M.R.); (G.M.)
- NIS Interdepartmental Centre, Università degli Studi di Torino, Via Pietro Giuria 7, 10124 Torino, Italy
| | - Francesca Deganello
- Consiglio Nazionale delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), Via Ugo La Malfa 153, 90146 Palermo, Italy;
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5
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Salgado BCB, Valentini A. Photocatalytic performance of SiO2@TiO2 spheres in selective conversion of oxidation of benzyl alcohol to benzaldehyde and reduction of nitrobenzene to aniline. AN ACAD BRAS CIENC 2023; 95:e20220105. [PMID: 37436200 DOI: 10.1590/0001-3765202320220105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 05/17/2022] [Indexed: 07/13/2023] Open
Abstract
Selective photocatalytic oxidation of benzyl alcohol to benzaldehyde and reduction of nitrobenzene to aniline reactions are investigated by using SiO2@TiO2 spheres produced in a simple route using chitosan as a template. The spheres are predominantly macroporous and, the XRD points out an amorphous crystallographic profile suggesting the uniform distribution of TiO2. Under low-power lighting for 4 hours, the conversions achieved was of the order of 49% and 99% for benzyl alcohol and nitrobenzene, respectively, with selectivity to benzaldehyde and aniline of 99% in both reactions. The study also follows the effects of the solvent and the presence of O2.
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Affiliation(s)
- Bruno C B Salgado
- Departamento de Química e Meio Ambiente, Instituto Federal do Ceará, Campus Maracanaú, 61939-140 Maracanaú, CE, Brazil
| | - Antoninho Valentini
- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará, Campus do Pici, 60455-970 Fortaleza, CE, Brazil
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6
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Khan N, Gul T, Khan I, Alabbad EA, Ali S, Saeed K, Khan I. Scavenging of Organic Pollutant and Fuel Generation through Cost-Effective and Abundantly Accessible Rust: A Theoretical Support with DFT Simulations. MATERIALS (BASEL, SWITZERLAND) 2022; 16:142. [PMID: 36614481 PMCID: PMC9821181 DOI: 10.3390/ma16010142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/19/2022] [Accepted: 12/21/2022] [Indexed: 06/15/2023]
Abstract
Waste management and energy generation are the foremost concerns due to their direct relationship with biological species and the environment. Herein, we report the utilization of iron rust (inorganic pollutant) as a photocatalyst for the photodegradation of methylene blue (MB) dye (organic pollutant) under visible light (economic) and water oxidation (energy generation). Iron rust was collected from metallic pipes and calcined in the furnace at 700 °C for 3 h to remove the moisture/volatile content. The uncalcined and calcined rust NPs are characterized through scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier-transform infrared (FTIR) analysis, X-ray Diffraction (XRD), and thermogravimetric analysis (TGA). The morphological study illustrated that the shape of uncalcined and calcined iron rust is spongy, porous, and agglomerated. The XRD and DLS particle sizes are in a few hundred nanometers range. The photodegradation (PD) investigation shows that calcined rust NPs are potent for the PD of modeled MB, and the degradation efficiency was about 94% in a very short time of 11 min. The photoelectrochemical (PEC) measurements revealed that calcined rust NPs are more active than uncalcined rust under simulated 1 SUN illumination with the respective photocurrent densities of ~0.40 and ~0.32 mA/cm2. The density functional theory simulations show the chemisorption of dye molecules over the catalyst surface, which evinces the high catalytic activity of the catalyst. These results demonstrate that cheaper and abundantly available rust can be useful for environmental and energy applications.
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Affiliation(s)
- Nisar Khan
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Charsadda 24540, Pakistan
| | - Tamanna Gul
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Charsadda 24540, Pakistan
| | - Idrees Khan
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Charsadda 24540, Pakistan
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710129, China
| | - Eman A. Alabbad
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1980, Dammam 31441, Saudi Arabia
| | - Shahid Ali
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Khalid Saeed
- Department of Chemistry, Bacha Khan University, Khyber Pakhtunkhwa, Charsadda 24540, Pakistan
| | - Ibrahim Khan
- School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Seoul 06974, Republic of Korea
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7
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da Silva DJ, Duran A, Cabral AD, Fonseca FLA, Bueno RF, Wang SH, Rosa DS. Delta SARS-CoV-2 inactivation and bactericidal performance of cotton wipes decorated with TiO 2/Ag nanoparticles like Brazilian heavy-fruited Myrciaria cauliflora. MATERIALS TODAY. COMMUNICATIONS 2022; 33:104288. [PMID: 36033158 PMCID: PMC9394096 DOI: 10.1016/j.mtcomm.2022.104288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 08/01/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
The current pandemic of Coronavirus Disease 2019 (COVID-19) raised several concerns about using conventional textiles for manufacturing personal protective equipment without self-disinfecting properties since the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is transmitted mainly by aerosols that can transpose cotton masks. Therefore, developing new cotton fibers with high self-disinfecting ability is essential to avoid a new pandemic due to new SARS-CoV-2 variants. Herein, we developed cotton wipes (CFs) with fibers coated by Ag, TiO2, and Ag/TiO2 hybrid nanoparticles like Brazilian heavy-fruited Myrciaria cauliflora by a sonochemical approach. Moreover, the coated CFs present high antimicrobial performance against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), being able to inactivate infectious SARS-CoV-2 (Delta variant) by the destruction of the spike, membrane, and nucleocapsid proteins while the viral RNA is not significantly affected, according to the molecular biological findings.
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Affiliation(s)
- Daniel J da Silva
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Av. dos Estados 5001, Santo André, SP 09210-210, Brazil
- Department of Metallurgical and Materials Engineering, Polytechnic School, University of São Paulo, Av. Prof. Mello Moraes 2643, São Paulo, SP, 05508-030, Brazil
| | - Adriana Duran
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Av. dos Estados 5001, Santo André, SP 09210-210, Brazil
| | - Aline D Cabral
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Av. dos Estados 5001, Santo André, SP 09210-210, Brazil
| | - Fernando L A Fonseca
- Faculty of Medicine of ABC (FMABC), Department of Clinical Analysis, Av. Lauro Gomes 2000, Santo André, SP 09060-870, Brazil
| | - Rodrigo F Bueno
- Coordinator of the COVID-19 Monitoring Network in Wastewater National Water and Basic Sanitation Agency, Ministry of Science, Technology and Innovation and Ministry of Health, Brazil. Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Av. dos Estados 5001, Santo André, SP 09210-210, Brazil
| | - Shu Hui Wang
- Department of Metallurgical and Materials Engineering, Polytechnic School, University of São Paulo, Av. Prof. Mello Moraes 2643, São Paulo, SP, 05508-030, Brazil
| | - Derval S Rosa
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Av. dos Estados 5001, Santo André, SP 09210-210, Brazil
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8
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Jamil YMS, Awad MAH, Al‐Maydama HMA, EL‐Ghoul Y, Al‐Hakimi AN. Synthesis and study of enhanced electrochemical properties of NiO Nanoparticles Deposited on TiO
2
nanotubes. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | - Yassine EL‐Ghoul
- Department of Chemistry, College of Science Qassim University Buraidah Saudi Arabia
- Textile Engineering Laboratory University of Monastir Monastir Tunisia
| | - Ahmed N. Al‐Hakimi
- Department of Chemistry, College of Science Qassim University Buraidah Saudi Arabia
- Department of Chemistry, Faculty of Sciences Ibb University Ibb Yemen
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9
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Abstract
The unavailability of clean drinking water is one of the significant health issues in modern times. Industrial dyes are one of the dominant chemicals that make water unfit for drinking. Among these dyes, methylene blue (MB) is toxic, carcinogenic, and non-biodegradable and can cause a severe threat to human health and environmental safety. It is usually released in natural water sources, which becomes a health threat to human beings and living organisms. Hence, there is a need to develop an environmentally friendly, efficient technology for removing MB from wastewater. Photodegradation is an advanced oxidation process widely used for MB removal. It has the advantages of complete mineralization of dye into simple and nontoxic species with the potential to decrease the processing cost. This review provides a tutorial basis for the readers working in the dye degradation research area. We not only covered the basic principles of the process but also provided a wide range of previously published work on advanced photocatalytic systems (single-component and multi-component photocatalysts). Our study has focused on critical parameters that can affect the photodegradation rate of MB, such as photocatalyst type and loading, irradiation reaction time, pH of reaction media, initial concentration of dye, radical scavengers and oxidising agents. The photodegradation mechanism, reaction pathways, intermediate products, and final products of MB are also summarized. An overview of the future perspectives to utilize MB at an industrial scale is also provided. This paper identifies strategies for the development of effective MB photodegradation systems.
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10
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da Silva DJ, Souza AG, Ferreira GDS, Duran A, Cabral AD, Fonseca FLA, Bueno RF, Rosa DS. Cotton Fabrics Decorated with Antimicrobial Ag-Coated TiO 2 Nanoparticles Are Unable to Fully and Rapidly Eradicate SARS-CoV-2. ACS APPLIED NANO MATERIALS 2021; 4:12949-12956. [PMID: 37556280 PMCID: PMC8673468 DOI: 10.1021/acsanm.1c03492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 11/30/2021] [Indexed: 05/02/2023]
Abstract
The successful development of multifunctional cotton fabrics with antimicrobial and antiviral activities is essential to prevent the proliferation of microorganisms and transmission of coronavirus virions today, especially with the emergence of new variants of SARS-CoV-2. In this work, we developed antimicrobial cotton fabrics with Ag/TiO2 nanoparticles synthesized via sonochemistry. Here, we show that more than 50% of infectious SARS-CoV-2 remain active after prolonged direct contact self-disinfecting materials capable of inhibiting the proliferation of Escherichia coli and Staphylococcus aureus. The findings bring several epidemiologic worries about using silver and TiO2 as self-disinfecting nanostructured agents to prevent coronavirus transmission.
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Affiliation(s)
- Daniel J. da Silva
- Center for Engineering, Modeling, and Applied Social
Sciences (CECS), Federal University of ABC (UFABC), Santo
André, São Paulo 09210-210, Brazil
| | - Alana G. Souza
- Center for Engineering, Modeling, and Applied Social
Sciences (CECS), Federal University of ABC (UFABC), Santo
André, São Paulo 09210-210, Brazil
| | - Greiciele da S. Ferreira
- Center for Engineering, Modeling, and Applied Social
Sciences (CECS), Federal University of ABC (UFABC), Santo
André, São Paulo 09210-210, Brazil
| | - Adriana Duran
- Center for Engineering, Modeling, and Applied Social
Sciences (CECS), Federal University of ABC (UFABC), Santo
André, São Paulo 09210-210, Brazil
| | - Aline D. Cabral
- Center for Engineering, Modeling, and Applied Social
Sciences (CECS), Federal University of ABC (UFABC), Santo
André, São Paulo 09210-210, Brazil
| | - Fernando L. A. Fonseca
- Faculty of Medicine of ABC
(FMABC), Department of Clinical Analysis, Santo André, São
Paulo 09060-870, Brazil
| | - Rodrigo F. Bueno
- Center for Engineering, Modeling, and Applied Social
Sciences (CECS), Federal University of ABC (UFABC), Santo
André, São Paulo 09210-210, Brazil
- Coordinator of the COVID-19 Monitoring in Wastewater
Network, National Water and Basic Sanitation Agency, Ministry of Science,
Technology and Innovation, and Ministry of Health, Brasilia, Distrito
Federal 70067-900, Brazil
| | - Derval S. Rosa
- Center for Engineering, Modeling, and Applied Social
Sciences (CECS), Federal University of ABC (UFABC), Santo
André, São Paulo 09210-210, Brazil
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11
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Assis M, Simoes LGP, Tremiliosi GC, Coelho D, Minozzi DT, Santos RI, Vilela DCB, do Santos JR, Ribeiro LK, Rosa ILV, Mascaro LH, Andrés J, Longo E. SiO 2-Ag Composite as a Highly Virucidal Material: A Roadmap that Rapidly Eliminates SARS-CoV-2. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:638. [PMID: 33806671 PMCID: PMC8001031 DOI: 10.3390/nano11030638] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 02/22/2021] [Accepted: 02/26/2021] [Indexed: 02/07/2023]
Abstract
COVID-19, as the cause of a global pandemic, has resulted in lockdowns all over the world since early 2020. Both theoretical and experimental efforts are being made to find an effective treatment to suppress the virus, constituting the forefront of current global safety concerns and a significant burden on global economies. The development of innovative materials able to prevent the transmission, spread, and entry of COVID-19 pathogens into the human body is currently in the spotlight. The synthesis of these materials is, therefore, gaining momentum, as methods providing nontoxic and environmentally friendly procedures are in high demand. Here, a highly virucidal material constructed from SiO2-Ag composite immobilized in a polymeric matrix (ethyl vinyl acetate) is presented. The experimental results indicated that the as-fabricated samples exhibited high antibacterial activity towards Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) as well as towards SARS-CoV-2. Based on the present results and radical scavenger experiments, we propose a possible mechanism to explain the enhancement of the biocidal activity. In the presence of O2 and H2O, the plasmon-assisted surface mechanism is the major reaction channel generating reactive oxygen species (ROS). We believe that the present strategy based on the plasmonic effect would be a significant contribution to the design and preparation of efficient biocidal materials. This fundamental research is a precedent for the design and application of adequate technology to the next-generation of antiviral surfaces to combat SARS-CoV-2.
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Affiliation(s)
- Marcelo Assis
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castellon, Spain
| | - Luiz Gustavo P. Simoes
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Guilherme C. Tremiliosi
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Dyovani Coelho
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Daniel T. Minozzi
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Renato I. Santos
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Daiane C. B. Vilela
- Nanox Tecnologia S/A, 13562-400 São Carlos, SP, Brazil; (L.G.P.S.); (G.C.T.); (D.T.M.); (R.I.S.); (D.C.B.V.)
| | - Jeziel Rodrigues do Santos
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Lara Kelly Ribeiro
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Ieda Lucia Viana Rosa
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Lucia Helena Mascaro
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
| | - Juan Andrés
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castellon, Spain
| | - Elson Longo
- CDMF, LIEC, Federal University of São Carlos—(UFSCar), 13565-905 São Carlos, SP, Brazil; (M.A.); (D.C.); (J.R.d.S.); (L.K.R.); (I.L.V.R.); (L.H.M.); (E.L.)
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