1
|
Corrales J, Acosta J, Castro S, Riascos H, Serna-Galvis E, Torres-Palma RA, Ávila-Torres Y. Manganese Dioxide Nanoparticles Prepared by Laser Ablation as Materials with Interesting Electronic, Electrochemical, and Disinfecting Properties in Both Colloidal Suspensions and Deposited on Fluorine-Doped Tin Oxide. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4061. [PMID: 36432347 PMCID: PMC9698065 DOI: 10.3390/nano12224061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Nanoparticles (NPs) of α-MnO2 have high applicability in photoelectrochemical, heterogeneous photocatalysis, optical switching, and disinfection processes. To widen this panorama about MnO2 NPs, the formation of this material by laser ablation and deposition by dip-coating on fluorine-doped tin oxide (FTO), were considered in this study. The optical, spectroscopic, electrochemical characterization, and the evaluation of the antimicrobial activity, plus the photocatalytic response, were measured herein in colloidal media and deposited. For the deposition of NPs on FTO sheet, an anode is produced with a pseudocapacitive behavior, and 2.82 eV of band gap (GAP) in comparison with colloidal NPs for a value of 3.84 eV. Both colloidal suspension and deposited NPs have intrinsic antibacterial activity against two representative microorganisms (E. coli and S. aureus), and this biological activity was significantly enhanced in the presence of UVA light, indicating photocatalytic activity of the material. Thus, both the colloidal suspension and deposited NPs can act as disinfecting agents themselves or via light activation. However, an antibacterial behavior different for E. coli and S. aureus was observed, in function of the aggregation state, obtaining total E. coli disinfection at 30 min for deposited samples on FTO.
Collapse
Affiliation(s)
- Jhonatan Corrales
- Maester in Chemical Sciencies, Faculty of technology, Universidad Tecnológica de Pereira, Pereira 660003, Colombia
| | - Jorge Acosta
- Department of Macromolecular Compounds, Faculty of Chemistry, Lomonosov Moscow State University MSU, 119991 Moscow, Russia
| | - Sandra Castro
- Grupo de Investigación en Elctroquímica y Medio Ambiente, Universidad Santiago de Cali, Faculty of Sciences, Santiago de Cali 760035, Colombia
| | - Henry Riascos
- Grupo de Ablación Láser, Universidad Tecnológica de Pereira, Pereira 660001, Colombia
| | - Efraim Serna-Galvis
- Grupo de Investigación Catalizadores y Adsorbentes (Catalad), Faculty of Exact and Natural Sciences, Chemistry Institution, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín 050010, Colombia
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Faculty of Exact and Natural Sciences, Chemistry Institution, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín 050010, Colombia
| | - Ricardo A. Torres-Palma
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Faculty of Exact and Natural Sciences, Chemistry Institution, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín 050010, Colombia
| | - Yenny Ávila-Torres
- Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Faculty of Exact and Natural Sciences, Chemistry Institution, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín 050010, Colombia
| |
Collapse
|
2
|
Salomón FF, Vega NC, Jurado JP, Morán Vieyra FE, Tirado M, Comedi D, Campoy-Quiles M, Cattaneo M, Katz NE. Heteroleptic Ruthenium(II) Complexes with 2,2'-Bipyridines Having Carbonitriles as Anchoring Groups for ZnO Surfaces: Syntheses, Physicochemical Properties, and Applications in Organic Solar Cells. Inorg Chem 2021; 60:5660-5672. [PMID: 33821633 DOI: 10.1021/acs.inorgchem.0c03691] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Heteroleptic ruthenium (II) complexes were used for sensitizing ZnO surfaces in organic solar cells (OSCs) as mediators with photoactive layers. The complexes [Ru(4,4'-X2-bpy)(Mebpy-CN)2]2+ (with X = -CH3, -OCH3 and -N(CH3)2; bpy = 2,2'-bipyridine; Mebpy-CN = 4-methyl-2,2'-bipyridine-4'-carbonitrile) were synthesized and studied by analytical and spectroscopical techniques. Spectroscopic, photophysical, and electrochemical properties were tuned by changing the electron-donating ability of the -X substituents at the 4,4'-positions of the bpy ring and rationalized by quantum mechanical calculations. These complexes were attached through nitrile groups to ZnO as interfacial layer in an OSC device with a PBDB-T:ITIC photoactive layer. This modified inorganic electron transport layer generates enhancement in photoconversion of the solar cells, reaching up to a 23% increase with respect to the unsensitized OSCs. The introduction of these dyes suppresses some degradative reactions of the nonfullerene acceptor due to the photocatalytic activity of zinc oxide, which was maintained stable for about 11 months. Improving OSC efficiencies and stabilities can thus be achieved by a judicious combination of new inorganic and organic materials.
Collapse
Affiliation(s)
- Fernando F Salomón
- INQUINOA (CONICET-UNT), Instituto de Química Física, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, 4000 San Miguel de Tucumán, Argentina
| | - Nadia C Vega
- INFINOA (CONICET-UNT), NANOPROJECT, Depto. de Física, FACET, Universidad Nacional de Tucumán, Av. Independencia 1800, 4000 San Miguel de Tucumán, Argentina
| | - José Piers Jurado
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193 Bellaterra, España
| | - Faustino E Morán Vieyra
- INBIONATEC (CONICET-UNSE), Laboratorio de Cinética y Fotoquímica, Universidad Nacional de Santiago del Estero, RN 9, Km 1125, 4206 Santiago del Estero, Argentina
| | - Mónica Tirado
- INFINOA (CONICET-UNT), NANOPROJECT, Depto. de Física, FACET, Universidad Nacional de Tucumán, Av. Independencia 1800, 4000 San Miguel de Tucumán, Argentina
| | - David Comedi
- INFINOA (CONICET-UNT), NANOPROJECT, Depto. de Física, FACET, Universidad Nacional de Tucumán, Av. Independencia 1800, 4000 San Miguel de Tucumán, Argentina
| | - Mariano Campoy-Quiles
- Instituto de Ciencia de Materiales de Barcelona (ICMAB-CSIC), Campus de la Universitat Autònoma de Barcelona, 08193 Bellaterra, España
| | - Mauricio Cattaneo
- INQUINOA (CONICET-UNT), Instituto de Química Física, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, 4000 San Miguel de Tucumán, Argentina
| | - Néstor E Katz
- INQUINOA (CONICET-UNT), Instituto de Química Física, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, 4000 San Miguel de Tucumán, Argentina
| |
Collapse
|
3
|
Salomón F, Vega NC, Parella T, Morán Vieyra FE, Borsarelli CD, Longo C, Cattaneo M, Katz NE. Novel Heteroleptic Ruthenium(II) Complexes with 2,2'- Bipyridines Containing a Series of Electron-Donor and Electron-Acceptor Substituents in 4,4'-Positions: Syntheses, Characterization, and Application as Sensitizers for ZnO Nanowire-Based Solar Cells. ACS OMEGA 2020; 5:8097-8107. [PMID: 32309719 PMCID: PMC7161030 DOI: 10.1021/acsomega.0c00243] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
A novel series of complexes of the formula [Ru(4,4'-X2-bpy)2(Mebpy-CN)](PF6)2 (X = -CH3, -OCH3, -N(CH3)2; Mebpy-CN = 4-methyl-2,2'-bipyridine-4'-carbonitrile) have been synthesized and characterized by spectroscopic, electrochemical, and photophysical techniques. Inclusion of the electron-withdrawing substituent -CN at one bpy ligand and different electron-donor groups -X at the 4,4'-positions of the other two bpy ligands produce a fine tuning of physicochemical properties. Redox potentials, electronic absorption maxima, and emission maxima correlate well with Hammett's σp parameters of X. Quantum mechanical calculations are consistent with experimental data. All the complexes can be anchored through the nitrile moiety of Mebpy-CN over ZnO nanowires in dye-sensitized solar cells that exhibit an improvement of light to electrical energy conversion efficiency as the electronic asymmetry increases in the series.
Collapse
Affiliation(s)
- Fernando
F. Salomón
- INQUINOA
(UNT- CONICET), Instituto de Química Física, Facultad
de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, (T4000INI) San Miguel de Tucumán, Argentina
| | - Nadia C. Vega
- INQUINOA
(UNT- CONICET), Instituto de Química Física, Facultad
de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, (T4000INI) San Miguel de Tucumán, Argentina
| | - Teodor Parella
- Servei
de RMN, Universitat Autonóma de Barcelona, Bellaterra E-08193, Barcelona, Spain
| | - Faustino Eduardo Morán Vieyra
- INBIONATEC
(UNSE-CONICET), Universidad Nacional de
Santiago del Estero, RN 9, Km 1125,
(4206) Santiago del Estero, Argentina
| | - Claudio D. Borsarelli
- INBIONATEC
(UNSE-CONICET), Universidad Nacional de
Santiago del Estero, RN 9, Km 1125,
(4206) Santiago del Estero, Argentina
| | - Claudia Longo
- Institute
of Chemistry, University of Campinas, UNICAMP, C. Postal 6154, 13083-970 Campinas, Sao Paulo, Brazil
| | - Mauricio Cattaneo
- INQUINOA
(UNT- CONICET), Instituto de Química Física, Facultad
de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, (T4000INI) San Miguel de Tucumán, Argentina
| | - Néstor E. Katz
- INQUINOA
(UNT- CONICET), Instituto de Química Física, Facultad
de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, (T4000INI) San Miguel de Tucumán, Argentina
| |
Collapse
|
4
|
Torres JA, Nogueira AE, da Silva GT, Lopes OF, Wang Y, He T, Ribeiro C. Enhancing TiO2 activity for CO2 photoreduction through MgO decoration. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2019.09.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|