1
|
Lu P, Peng Y, Bai J. Polyimide/Ag 2WO 4 Z-Scheme Heterojunction for Efficient Photocatalytic Degradation of Tetracycline. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12191-12199. [PMID: 38814134 DOI: 10.1021/acs.langmuir.4c01213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
It is of great significance to construct a Z-scheme heterojunction for improving solar light harvesting and achieving efficient separation of photogenerated carriers and then enhancement of the photocatalytic performance of semiconductor photocatalysts. Herein, the direct Z-scheme PI/Ag2WO4 heterojunction was designed and prepared according to the band edge potentials of the semiconductor. Due to the fact that the Z-scheme structure not only endowed the PI/Ag2WO4 composites with efficient separation of photogenerated electron-hole pairs but also reserved the redox ability of the valence band and conduction band of monophase catalysts, the 50% PI/Ag2WO4 heterojunction exhibited excellent photocatalytic activity, which were 2.9 and 1.5 times those of the PI and Ag2WO4 photocatalysts, respectively. The photocatalytic reaction mechanism of PI/Ag2WO4 composites was confirmed by the results of TEM, UV-vis, XPS, and EPR experiments. This work provides a feasible strategy to design high-performance photocatalysts in the field of practice purification of wastewater.
Collapse
Affiliation(s)
- Peng Lu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Yuqi Peng
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Jinwu Bai
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| |
Collapse
|
2
|
Takeno M, Nobre FX, da Costa FF, Botelho do Nascimento MV, Pessoa Júnior WA, Araújo Júnior EA, Sousa GDS, de Sá ML, Gurgel RS, Albuquerque P, Matos JMD, Leyet Ruiz Y, Grandini CR. Solvent Effect on the Structural, Optical, Morphology, and Antimicrobial Activity of Silver Phosphate Microcrystals by Conventional Hydrothermal Method. ACS OMEGA 2024; 9:23069-23085. [PMID: 38826548 PMCID: PMC11137729 DOI: 10.1021/acsomega.4c02943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/26/2024] [Accepted: 05/08/2024] [Indexed: 06/04/2024]
Abstract
The design of particle size and morphology are a promising approach to investigating the properties exhibited by different types of materials. In the present study, the silver phosphate microcrystals (Ag3PO4) were first time synthesized using the hydrothermal and solvothermal method by combination of the solvents water/isopropyl alcohol (SP-IA), water/acetone (SP-AC), water/ammonium hydroxide (AP-AH), all in a ratio of 1:1 (v/v). The synthesized materials were structurally characterized by X-ray diffraction (XRD), Rietveld refinement, and Raman vibrational spectroscopy, where it was confirmed that the pure phase was achieved for all prepared samples. The study of the optical properties by UV-vis diffuse reflectance spectroscopy (UV-vis/DRS) and colorimetry revealed that the obtained materials have an optical bandgap between 2.30 and 2.32 eV. The FE-SEM images collected revealed different morphologies for the synthesized materials, with a predominance of tetraploid-shaped microcrystals for the SP-AC sample, rods for the SP-IA sample, cubes and polyhedral for the SP-WT sample and condensed polyhedral for the SP-AH sample. The photocatalytic performance against the Rhodamine B dye (RhB) was 100%, 98.2%, 94.2%, and 87.8%, using the samples SP-AC, SP-IA, SP-WT, and SP-AH as photocatalyst at time of 12 min. On the other hand, the antimicrobial performance of SP-AC sample showed superior performance, resulting in the minimum inhibitory concentration-MIC of 7.81 μg mL-1 for the strain of E. coli, 7.81 μg mL-1 for the strain of E. aureus, 15.62 μg mL-1 for the strain of P. auruginosa, and 15.62 μg mL-1 for the strains of C. albicans. In this way, was synthesized a promissory antimicrobial and photocatalyst material, through an easy and cost-effective method.
Collapse
Affiliation(s)
- Mitsuo
Lopes Takeno
- Department
of Chemistry, Environment, and Food (DQA), Group of Energy Resources
and Nanomaterials (GREEN), Federal Institute of Education, Science and Technology of Amazonas, Campus Manaus Centro, Manaus, 69020-120, AM Brazil
| | - Francisco Xavier Nobre
- Department
of Chemistry, Environment, and Food (DQA), Group of Energy Resources
and Nanomaterials (GREEN), Federal Institute of Education, Science and Technology of Amazonas, Campus Manaus Centro, Manaus, 69020-120, AM Brazil
| | - Fagner Ferreira da Costa
- Department
of Chemistry, Environment, and Food (DQA), Group of Energy Resources
and Nanomaterials (GREEN), Federal Institute of Education, Science and Technology of Amazonas, Campus Manaus Centro, Manaus, 69020-120, AM Brazil
| | - Marcus Valério Botelho do Nascimento
- Department
of Chemistry, Environment, and Food (DQA), Group of Energy Resources
and Nanomaterials (GREEN), Federal Institute of Education, Science and Technology of Amazonas, Campus Manaus Centro, Manaus, 69020-120, AM Brazil
| | - Wanison André
Gil Pessoa Júnior
- Department
of Chemistry, Environment, and Food (DQA), Group of Energy Resources
and Nanomaterials (GREEN), Federal Institute of Education, Science and Technology of Amazonas, Campus Manaus Centro, Manaus, 69020-120, AM Brazil
| | - Edgar Alves Araújo Júnior
- Interdisciplinar
Laboratory of Advanced Materials-LIMAV, Federal University of Piauí-UFPI, Teresina, 64049-550 PI Brazil
| | - Giancarlo da Silva Sousa
- Interdisciplinar
Laboratory of Advanced Materials-LIMAV, Federal University of Piauí-UFPI, Teresina, 64049-550 PI Brazil
| | - Marcel Leiner de Sá
- Interdisciplinar
Laboratory of Advanced Materials-LIMAV, Federal University of Piauí-UFPI, Teresina, 64049-550 PI Brazil
| | - Raiana Silveira Gurgel
- Research
Group on Chemistry Applied to Technology, School of Technology, Amazonas State University, Manaus 69050-020, Brazil
| | - Patrícia
Melchionna Albuquerque
- Research
Group on Chemistry Applied to Technology, School of Technology, Amazonas State University, Manaus 69050-020, Brazil
| | - José Milton
Elias de Matos
- Interdisciplinar
Laboratory of Advanced Materials-LIMAV, Federal University of Piauí-UFPI, Teresina, 64049-550 PI Brazil
| | - Yurimiler Leyet Ruiz
- Department
of Materials Engineering, Laboratory of Processing of Technological
Materials (LPMaT), Federal University of
Amazonas, Faculty of Technology, Rua Av. General Rodrigo Otávio Jordão Ramos, 1200,
Coroado I, Manaus, 69067-005, Brazil
| | - Carlos Roberto Grandini
- Laboratório
de Anelasticidade e Biomateriais, UNESP−Universidade
Estadual Paulista, Bauru 17033-360, SP Brazil
| |
Collapse
|
3
|
Patrocinio KL, Santos JR, Granone LI, Ponce MA, Churio MS, Ribeiro LK, Teodoro MD, Llusar R, Andrés J, Longo E, Assis M. Tuning the morphology to enhance the catalytic activity of α-Ag 2WO 4 through V-doping. Dalton Trans 2023; 52:14982-14994. [PMID: 37811730 DOI: 10.1039/d3dt02352d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Here, we present the synthesis of a highly efficient V-doped α-Ag2WO4 catalyst for the oxidation of sulfides to sulfones, exhibiting a high degree of tolerance towards various sensitive functional groups. Remarkably, the catalysts with 0.01% V-doping content exhibited outstanding selectivity towards the oxidation process. Scavenger experiments indicated the direct involvement of electron-hole (e-/h+) pairs, hydroxyl radical (˙OH), and singlet oxygen (1O2) in the catalytic mechanism. Based on the experimental and theoretical results, the higher activity of the V-doped α-Ag2WO4 samples was associated with the preferential formation of the (100) surface in the catalyst morphology.
Collapse
Affiliation(s)
- Katiana Lima Patrocinio
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Jeziel Rodrigues Santos
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Luis Ignacio Granone
- Departamento de Química y Bioquímica, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR), CONICET, Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
| | - Miguel Adolfo Ponce
- Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
- Physics and Engineering Research Center CIFICEN (CICPBA-CONICET), National University of the Center of the Province of Buenos Aires (UNCPBA), Tandil, B7000GHG, Argentina
| | - Maria Sandra Churio
- Departamento de Química y Bioquímica, Facultad de Ciencias Exactas y Naturales, Instituto de Investigaciones Físicas de Mar del Plata (IFIMAR), CONICET, Universidad Nacional de Mar del Plata (UNMdP), Mar del Plata, 7600, Argentina
| | - Lara Kelly Ribeiro
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Marcio Daldin Teodoro
- Department of Physics, Federal University of São Carlos, São Carlos, SP 13565-905, Brazil
| | - Rosa Llusar
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Juan Andrés
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| | - Elson Longo
- CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905, São Carlos, SP, Brazil
| | - Marcelo Assis
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló, 12071, Spain.
| |
Collapse
|
4
|
Moreno H, Domingues GL, Assis M, Ortega PP, Mastelaro VR, Ramirez MA, Simões AZ. The Relationship between Photoluminescence Emissions and Photocatalytic Activity of CeO 2 Nanocrystals. Inorg Chem 2023; 62:4291-4303. [PMID: 36862825 DOI: 10.1021/acs.inorgchem.2c04411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
In this work, we focus on understanding the morphology and photocatalytic properties of CeO2 nanocrystals (NCs) synthesized via a microwave-assisted solvothermal method using acetone and ethanol as solvents. Wulff constructions reveal a complete map of available morphologies and a theoretical-experimental match with octahedral nanoparticles obtained through synthesis using ethanol as solvent. NCs synthesized in acetone show a greater contribution of emission peaks in the blue region (∼450 nm), which may be associated with higher Ce3+ concentration, originating shallow-level defects within the CeO2 lattice while for the samples synthesized in ethanol a strong orange-red emission (∼595 nm) suggests that oxygen vacancies may originate from deep-level defects within the optical bandgap region. The superior photocatalytic response of CeO2 synthesized in acetone compared to that of CeO2 synthesized in ethanol may be associated with an increase in long-/short-range disorder within the CeO2 structure, causing the Egap value to decrease, facilitating light absorption. Furthermore, surface (100) stabilization in samples synthesized in ethanol may be related to low photocatalytic activity. Photocatalytic degradation was facilitated by the generation of ·OH and ·O2- radicals as corroborated by the trapping experiment. The mechanism of enhanced photocatalytic activity has been proposed suggesting that samples synthesized in acetone tend to have lower e'─h· pair recombination, which is reflected in their higher photocatalytic response.
Collapse
Affiliation(s)
- H Moreno
- School of Engineering and Science, São Paulo State University, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, Guaratingueta 12516-410, São Paulo, Brazil
| | - G L Domingues
- School of Engineering and Science, São Paulo State University, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, Guaratingueta 12516-410, São Paulo, Brazil
| | - M Assis
- Department of Analytical and Physical Chemistry, University Jaume I, Av. Vicent Sos Baynat s/n, Castellón 12071, Spain
| | - P P Ortega
- School of Engineering and Science, São Paulo State University, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, Guaratingueta 12516-410, São Paulo, Brazil
| | - V R Mastelaro
- São Carlos Institute of Physics, University of São Paulo, São Carlos 13566-590, Brazil
| | - M A Ramirez
- School of Engineering and Science, São Paulo State University, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, Guaratingueta 12516-410, São Paulo, Brazil
| | - A Z Simões
- School of Engineering and Science, São Paulo State University, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, Guaratingueta 12516-410, São Paulo, Brazil
| |
Collapse
|
5
|
Pereira PFDS, De Foggi CC, Gouveia AF, Pinatti IM, Cabral LA, Guillamon E, Sorribes I, San-Miguel MA, Vergani CE, Simões AZ, da Silva EZ, Cavalcante LS, Llusar R, Longo E, Andrés J. Disclosing the Biocide Activity of α-Ag2−2xCuxWO4 (0 ≤ x ≤ 0.16) Solid Solutions. Int J Mol Sci 2022; 23:ijms231810589. [PMID: 36142511 PMCID: PMC9504239 DOI: 10.3390/ijms231810589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 02/02/2023] Open
Abstract
In this work, α-Ag2−2xCuxWO4 (0 ≤ x ≤ 0.16) solid solutions with enhanced antibacterial (against methicillin-resistant Staphylococcus aureus) and antifungal (against Candida albicans) activities are reported. A plethora of techniques (X-ray diffraction with Rietveld refinements, inductively coupled plasma atomic emission spectrometry, micro-Raman spectroscopy, attenuated total reflectance–Fourier transform infrared spectroscopy, field emission scanning electron microscopy, ultraviolet–visible spectroscopy, photoluminescence emissions, and X-ray photoelectron spectroscopy) were employed to characterize the as-synthetized samples and determine the local coordination geometry of Cu2+ cations at the orthorhombic lattice. To find a correlation between morphology and biocide activity, the experimental results were sustained by first-principles calculations at the density functional theory level to decipher the cluster coordinations and electronic properties of the exposed surfaces. Based on the analysis of the under-coordinated Ag and Cu clusters at the (010) and (101) exposed surfaces, we propose a mechanism to explain the biocide activity of these solid solutions.
Collapse
Affiliation(s)
- Paula Fabiana dos Santos Pereira
- CDMF, LIEC, Department of Chemistry, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos 13565-905, SP, Brazil
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain
| | - Camila Cristina De Foggi
- Department of Conservative Dentistry, Faculty of Dental Sciences, Federal University of Rio Grande do Sul, Rio Grande do Sul 90035-004, RS, Brazil
| | - Amanda Fernandes Gouveia
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain
- Institute of Chemistry, State University of Campinas (Unicamp), Campinas 13083-859, SP, Brazil
| | - Ivo Mateus Pinatti
- Department of Chemistry, Federal University of Maranhao, Avenida dos Portugueses, 1966, São Luís 65080-805, MA, Brazil
| | - Luís Antônio Cabral
- Institute of Physics, “Gleb Wataghin” (IFGW), State University of Campinas, Campinas 13083-859, SP, Brazil
| | - Eva Guillamon
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain
| | - Iván Sorribes
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain
| | - Miguel A. San-Miguel
- Institute of Chemistry, State University of Campinas (Unicamp), Campinas 13083-859, SP, Brazil
| | - Carlos Eduardo Vergani
- Departamento de Materiais Odontológicos e Prótese, Faculdade de Odontologia de Araraquara, São Paulo State University (UNESP), P.O. Box 1680, Araraquara 14801-903, SP, Brazil
| | - Alexandre Zirpoli Simões
- Faculty of Engineering of Guaratinguetá, São Paulo State University (UNESP), Guaratinguetá 12516-410, SP, Brazil
| | - Edison Z. da Silva
- Institute of Physics, “Gleb Wataghin” (IFGW), State University of Campinas, Campinas 13083-859, SP, Brazil
| | - Laécio Santos Cavalcante
- PPGQ-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, Teresina 64002-150, PI, Brazil
| | - Rosa Llusar
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain
| | - Elson Longo
- CDMF, LIEC, Department of Chemistry, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos 13565-905, SP, Brazil
| | - Juan Andrés
- Department of Physical and Analytical Chemistry, University Jaume I (UJI), 12071 Castelló, Spain
- Correspondence:
| |
Collapse
|
6
|
Bastos IS, Nobre FX, da Silva ER, Orlandi PP, Lima DC, da Cunha Mendes O, Manzato L, Duarte Pereira MLR, Leyet Y, Couceiro PRC, Brito WR. Silver tungstate microcrystals and their performance over several clinical multidrug resistant microorganisms. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129132] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
7
|
Lima AEB, Assis M, Resende ALS, Santos HLS, Mascaro LH, Longo E, Santos RS, Cavalcante LS, Luz GE. CuWO4|MnWO4 heterojunction thin film with improved photoelectrochemical and photocatalytic properties using simulated solar irradiation. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05143-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
8
|
A diagnosis approach for semiconductor properties evaluation from ab initio calculations: Ag-based materials investigation. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122670] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
9
|
Ribeiro LK, Assis M, Lima LR, Coelho D, Gonçalves MO, Paiva RS, Moraes LN, Almeida LF, Lipsky F, San-Miguel MA, Mascaro LH, Grotto RMT, Sousa CP, Rosa ILV, Cruz SA, Andrés J, Longo E. Bioactive Ag 3PO 4/Polypropylene Composites for Inactivation of SARS-CoV-2 and Other Important Public Health Pathogens. J Phys Chem B 2021; 125:10866-10875. [PMID: 34546760 PMCID: PMC8482321 DOI: 10.1021/acs.jpcb.1c05225] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/08/2021] [Indexed: 01/08/2023]
Abstract
The current unprecedented coronavirus pandemic (COVID-19) is increasingly demanding advanced materials and new technologies to protect us and inactivate SARS-CoV-2. In this research work, we report the manufacture of Ag3PO4 (AP)/polypropylene (PP) composites using a simple method and also reveal their long-term anti-SARS-CoV-2 activity. This composite shows superior antibacterial (against Staphylococcus aureus and Escherichia coli) and antifungal activity (against Candida albicans), thus having potential for a variety of technological applications. The as-manufactured materials were characterized by XRD, Raman spectroscopy, FTIR spectroscopy, AFM, UV-vis spectroscopy, rheology, SEM, and contact angle to confirm their structural integrity. Based on the results of first-principles calculations at the density functional level, a plausible reaction mechanism for the initial events associated with the generation of both hydroxyl radical •OH and superoxide radical anion •O2- in the most reactive (110) surface of AP was proposed. AP/PP composites proved to be an attractive avenue to provide human beings with a broad spectrum of biocide activity.
Collapse
Affiliation(s)
- Lara K. Ribeiro
- CDMF,
LIEC, Federal University of São Carlos—(UFSCar), São Carlos, São
Paulo 13565-905, Brazil
| | - Marcelo Assis
- CDMF,
LIEC, Federal University of São Carlos—(UFSCar), São Carlos, São
Paulo 13565-905, Brazil
- Department
of Physical and Analytical Chemistry, University
Jaume I (UJI), Castelló 12071, Spain
| | - Lais R. Lima
- Chemistry
Department, Federal University of São
Carlos (UFSCar), São Carlos, São Paulo 13565-905, Brazil
| | - Dyovani Coelho
- CDMF,
LIEC, Federal University of São Carlos—(UFSCar), São Carlos, São
Paulo 13565-905, Brazil
| | - Mariana O. Gonçalves
- Biomolecules
and Microbiology Laboratory (LaMiB), Biotechnology Graduation Program, Federal University of São Carlos (UFSCar), São Carlos, São
Paulo 13565-905, Brazil
| | - Robert S. Paiva
- Chemistry
Department, Federal University of São
Carlos (UFSCar), São Carlos, São Paulo 13565-905, Brazil
| | - Leonardo N. Moraes
- School
of Agriculture; São Paulo State University
(Unesp), Botucatu, São Paulo 18610-034, Brazil
- Molecular
Laboratory of Clinical Hospital of Botucatu, Medical School; São Paulo State University (Unesp), Botucatu, São Paulo 18618-687, Brazil
| | - Lauana F. Almeida
- School
of Agriculture; São Paulo State University
(Unesp), Botucatu, São Paulo 18610-034, Brazil
- Molecular
Laboratory of Clinical Hospital of Botucatu, Medical School; São Paulo State University (Unesp), Botucatu, São Paulo 18618-687, Brazil
| | - Felipe Lipsky
- Institute
of Chemistry, State University of Campinas
(Unicamp), Campinas, São Paulo 13083-970, Brazil
| | - Miguel A. San-Miguel
- Institute
of Chemistry, State University of Campinas
(Unicamp), Campinas, São Paulo 13083-970, Brazil
| | - Lúcia H. Mascaro
- CDMF,
LIEC, Federal University of São Carlos—(UFSCar), São Carlos, São
Paulo 13565-905, Brazil
| | - Rejane M. T. Grotto
- School
of Agriculture; São Paulo State University
(Unesp), Botucatu, São Paulo 18610-034, Brazil
- Molecular
Laboratory of Clinical Hospital of Botucatu, Medical School; São Paulo State University (Unesp), Botucatu, São Paulo 18618-687, Brazil
| | - Cristina P. Sousa
- Biomolecules
and Microbiology Laboratory (LaMiB), Biotechnology Graduation Program, Federal University of São Carlos (UFSCar), São Carlos, São
Paulo 13565-905, Brazil
| | - Ieda L. V. Rosa
- CDMF,
LIEC, Federal University of São Carlos—(UFSCar), São Carlos, São
Paulo 13565-905, Brazil
| | - Sandra A. Cruz
- Chemistry
Department, Federal University of São
Carlos (UFSCar), São Carlos, São Paulo 13565-905, Brazil
| | - Juan Andrés
- Department
of Physical and Analytical Chemistry, University
Jaume I (UJI), Castelló 12071, Spain
| | - Elson Longo
- CDMF,
LIEC, Federal University of São Carlos—(UFSCar), São Carlos, São
Paulo 13565-905, Brazil
| |
Collapse
|
10
|
Feitosa de Carvalho TA, Nobre FX, de Lima Barros A, Ghosh A, de Almeida Lima e Silva A, Oliveira dos Santos Fontenelle R, Rita de Morais Chaves Santos M, Elias de Matos JM. Investigation of optical, structural, and antifungal properties of lindgrenite obtained by conventional coprecipitation and ultrasound-assisted coprecipitation methods. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.121957] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Alvarez-Roca R, Gouveia AF, de Foggi CC, Lemos PS, Gracia L, da Silva LF, Vergani CE, San-Miguel M, Longo E, Andrés J. Selective Synthesis of α-, β-, and γ-Ag 2WO 4 Polymorphs: Promising Platforms for Photocatalytic and Antibacterial Materials. Inorg Chem 2021; 60:1062-1079. [PMID: 33372756 DOI: 10.1021/acs.inorgchem.0c03186] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Silver tungstate (Ag2WO4) shows structural polymorphism with different crystalline phases, namely, orthorhombic, hexagonal, and cubic structures that are commonly known as α, β, and γ, respectively. In this work, these Ag2WO4 polymorphs were selectively and successfully synthesized through a simple precipitation route at ambient temperature. The polymorph-controlled synthesis was conducted by means of the volumetric ratios of the silver nitrate/tungstate sodium dehydrate precursors in solution. The structural and electronic properties of the as-synthesized Ag2WO4 polymorphs were investigated by using a combination of X-ray diffraction and Rietveld refinements, X-ray absorption spectroscopy, X-ray absorption near-edge structure spectroscopy, field-emission scanning electron microscopy images, and photoluminescence. To complement and rationalize the experimental results, first-principles calculations, at the density functional theory level, were carried out, leading to an unprecedented glimpse into the atomic-level properties of the morphology and the exposed surfaces of Ag2WO4 polymorphs. Following the analysis of the local coordination of Ag and W cations (clusters) at each exposed surface of the three polymorphs, the structure-property relationship between the morphology and the photocatalytic and antibacterial activities against amiloride degradation under ultraviolet light irradiation and methicillin-resistant Staphylococcus aureus, respectively, was investigated. A possible mechanism of the photocatalytic and antibacterial activity as well the formation process and growth of the polymorphs is also explored and proposed.
Collapse
Affiliation(s)
| | - Amanda Fernandes Gouveia
- Institute of Chemistry, State University of Campinas, Unicamp, 13083-970 Campinas, SP Brazil.,Department of Physical and Analytical Chemistry, Jaume I University, 12071 Castelló de la Plana, Spain
| | | | | | - Lourdes Gracia
- Department of Physical and Analytical Chemistry, Jaume I University, 12071 Castelló de la Plana, Spain
| | | | | | - Miguel San-Miguel
- Institute of Chemistry, State University of Campinas, Unicamp, 13083-970 Campinas, SP Brazil
| | | | - Juan Andrés
- Department of Physical and Analytical Chemistry, Jaume I University, 12071 Castelló de la Plana, Spain
| |
Collapse
|
12
|
Zhai XY, Zhao YF, Zhang GY, Wang BY, Mao QY. In situ construction of a direct Z-scheme AgBr/α-Ag 2WO 4 heterojunction with promoted spatial charge migration and photocatalytic performance. NEW J CHEM 2021. [DOI: 10.1039/d0nj05965j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A hierarchical AgBr/α-Ag2WO4 Z-scheme heterojunction was facially constructed for greatly improved photocatalytic activity towards pollutant elimination due to promoted spatial separation of carriers with high redox capacity.
Collapse
Affiliation(s)
- Xiao-Ya Zhai
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Yi-Fan Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Guo-Ying Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Bing-Yu Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Qi-Yun Mao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules
- College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| |
Collapse
|
13
|
Gomes EO, Gracia L, Santiago AAG, Tranquilin RL, Motta FV, Amoresi RAC, Longo E, Bomio MRD, Andres J. Structure, electronic properties, morphology evolution, and photocatalytic activity in PbMoO 4 and Pb 1-2xCa xSr xMoO 4 ( x = 0.1, 0.2, 0.3, 0.4 and 0.5) solid solutions. Phys Chem Chem Phys 2020; 22:25876-25891. [PMID: 33156308 DOI: 10.1039/d0cp04596a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work PbMoO4 and Pb1-2xCaxSrxMoO4 (x = 0.1, 0.2, 0.3, 0.4 and 0.5) solid solutions have been successfully prepared, for the first time, by a simple co-precipitation method and the as-synthesized samples were subjected to a water-based reflux treatment. Structural characterization of these samples was performed using X-ray diffraction with Rietveld refinement analysis and Raman spectroscopy. Their optical properties were investigated by UV-Vis absorption spectroscopy and PL emissions, and the photocatalytic activity of the as-synthesized samples for the degradation process of Rhodamine B has been demonstrated. The surface structure and morphologies were characterized by field emission scanning electron microscopy. To complement and rationalize the experimental results, the geometry, electronic structures, and morphologies of as-synthesized samples were characterized by first-principles quantum-mechanical calculations at the density functional theory level. By using Wulff construction, based on the values of the surface energies for the (001), (100), (110), (111), (011) and (112) surfaces, a complete map of the available morphologies for PbMoO4 was obtained and a good agreement between the experimental and theoretical predicted morphologies was found. The structural and electronic changes induced by the substitution of Pb by Ca and Sr allow us to find a relationship among morphology, the electron-transfer process at the exposed surfaces, optical properties, and photocatalytic activity. We believe that our results offer new insights regarding the local coordination of superficial Pb/Ca/Sr and Mo cations (i.e., clusters) on each exposed surface of the corresponding morphology, which dictate the photocatalytic activities of the as-synthesized samples, a field that has so far remained unexplored. The present study, which combines multiple experimental methods and first-principles calculations, provides a deep understanding of the local structures, bonding, morphologies, band gaps, and electronic and optical properties, and opens the door to exploit the electrical, optical and photocatalytic activity of this very promising family of materials.
Collapse
Affiliation(s)
- E O Gomes
- Department of Analytical and Physical Chemistry, Universitat Jaume I, 12071 Castelló, Spain.
| | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Enhanced oxidase-like activity of Ag@Ag2WO4 nanorods for colorimetric detection of Hg2+. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125203] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
15
|
Huang J, Li D, Liu Y, Li R, Chen P, Liu H, Lv W, Liu G, Feng Y. Ultrathin Ag 2WO 4-coated P-doped g-C 3N 4 nanosheets with remarkable photocatalytic performance for indomethacin degradation. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122355. [PMID: 32105960 DOI: 10.1016/j.jhazmat.2020.122355] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 06/10/2023]
Abstract
As a metal-free photocatalyst, the photocatalytic activity of graphitic carbon nitride (g-C3N4) remains restricted due to an insufficient visible-light absorption capacity, the rapid recombination of photoinduced carriers, and low surface area. Consequently, P-doped g-C3N4 (PCN) was successfully prepared via a single -step thermal polymerization technique using phytic acid biomass and urea, which exhibited remarkable photocatalytic activity for the degradation of indometacin (IDM). The IDM degradation rate was 7.1 times greater than that of pristine g-C3N4 (CN). Furthermore, Ag2WO4 was loaded onto the surface of the PCN, which formed a Z-scheme heterostructure that promoted the separation of photogenerated carriers. According to analyses of the chemical binding states of PCN, P atoms replaced carbon atoms in the CN framework. According to electron localization function analysis, the low ELF values of P-N facilitated the transfer of photoelectrons. The results of active species scavenging experiments confirmed that superoxide radicals were the primary active species in the photocatalytic degradation system. Finally, the photocatalytic degradation pathways of IDM were predicted through the identification of by-products and IDM reaction sites.
Collapse
Affiliation(s)
- Jiaxing Huang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Daguang Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yang Liu
- Faculty of Environmental & Biological Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Ruobai Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ping Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Haijin Liu
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Xinxiang, 453007, China
| | - Wenying Lv
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Guoguang Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Yiping Feng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| |
Collapse
|
16
|
Laier LO, Assis M, Foggi CC, Gouveia AF, Vergani CE, Santana LCL, Cavalcante LS, Andrés J, Longo E. Surface-dependent properties of α-Ag2WO4: a joint experimental and theoretical investigation. Theor Chem Acc 2020. [DOI: 10.1007/s00214-020-02613-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
17
|
Assis M, Pontes Ribeiro RA, Carvalho MH, Teixeira MM, Gobato YG, Prando GA, Mendonça CR, de Boni L, Aparecido de Oliveira AJ, Bettini J, Andrés J, Longo E. Unconventional Magnetization Generated from Electron Beam and Femtosecond Irradiation on α-Ag 2WO 4: A Quantum Chemical Investigation. ACS OMEGA 2020; 5:10052-10067. [PMID: 32391493 PMCID: PMC7203983 DOI: 10.1021/acsomega.0c00542] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 04/13/2020] [Indexed: 05/29/2023]
Abstract
Novel magnetic metals and metal oxides that use both the spin and charge of an electron offer exciting technological applications. Their discovery could boost research on functional nanoscale materials. Here, for the first time, we report the magnetization of α-Ag2WO4 under electron beam and femtosecond laser irradiation. The formation and growth of silver oxides (AgO, Ag2O, and Ag3O4) and Ag nanofilaments can be observed on the surface of α-Ag2WO4 crystals. These features were also present in the composition of an extruded material and could open new avenues for surface magnetism studies. In order to understand these results, we used first-principles density functional theory calculations. This allowed us to investigate several potential scenarios for controlling magnetic properties. The effect of electron addition on the crystalline structures of α-Ag2WO4, Ag3O4, Ag2O, and AgO has been analyzed in detail. The creation of Ag and O vacancies on these compounds was also analyzed. Based on structural and electronic changes at the local coordination site of Ag, a mechanism was proposed. The mechanism illustrates the processes responsible for the formation and growth of metallic Ag and the magnetic response to electron beam irradiation.
Collapse
Affiliation(s)
- Marcelo Assis
- CDMF,
LIEC, Chemistry Department, Federal University
of São Carlos—(UFSCar), P.O. Box 676, 13565-905 São
Carlos, São Paulo, Brazil
| | - Renan Augusto Pontes Ribeiro
- CDMF,
LIEC, Chemistry Department, Federal University
of São Carlos—(UFSCar), P.O. Box 676, 13565-905 São
Carlos, São Paulo, Brazil
| | - Maria Helena Carvalho
- Physics
Department, Federal University of São
Carlos—(UFSCar), P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
| | - Mayara Mondego Teixeira
- CDMF,
LIEC, Chemistry Department, Federal University
of São Carlos—(UFSCar), P.O. Box 676, 13565-905 São
Carlos, São Paulo, Brazil
| | - Yara Galvão Gobato
- Physics
Department, Federal University of São
Carlos—(UFSCar), P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
| | - Gabriela Augusta Prando
- Physics
Department, Federal University of São
Carlos—(UFSCar), P.O. Box 676, 13565-905 São Carlos, São Paulo, Brazil
| | - Cleber Renato Mendonça
- IFSC—Instituto
de Física de São Carlos, Universidade
de São Paulo—(USP), 13566-590 São Carlos, São Paulo, Brazil
| | - Leonardo de Boni
- IFSC—Instituto
de Física de São Carlos, Universidade
de São Paulo—(USP), 13566-590 São Carlos, São Paulo, Brazil
| | | | - Jefferson Bettini
- Brazilian
Nanotechnology National Laboratory (LNNano), Rua Giuseppe Maximo Scolfa no 10000, BR-13083100 Campinas, São Paulo, Brazil
| | - Juan Andrés
- Department
of Analytical and Physical Chemistry, University
Jaume I (UJI), 12071 Castelló, Spain
| | - Elson Longo
- CDMF,
LIEC, Chemistry Department, Federal University
of São Carlos—(UFSCar), P.O. Box 676, 13565-905 São
Carlos, São Paulo, Brazil
| |
Collapse
|
18
|
Silva FCM, Silva LKR, Santos AGD, Caldeira VPS, Cruz-Filho JF, Cavalcante LS, Longo E, Luz GE. Structural Refinement, Morphological Features, Optical Properties, and Adsorption Capacity of α-Ag2WO4 Nanocrystals/SBA-15 Mesoporous on Rhodamine B Dye. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01560-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
19
|
Ayappan C, Jayaraman V, Palanivel B, Pandikumar A, Mani A. Facile preparation of novel Sb2S3 nanoparticles/rod-like α-Ag2WO4 heterojunction photocatalysts: Continuous modulation of band structure towards the efficient removal of organic contaminants. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116302] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
20
|
Podder S, Paul S, Basak P, Xie B, Fullwood NJ, Baldock SJ, Yang Y, Hardy JG, Ghosh CK. Bioactive silver phosphate/polyindole nanocomposites. RSC Adv 2020; 10:11060-11073. [PMID: 35495315 PMCID: PMC9050456 DOI: 10.1039/d0ra01129k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 03/10/2020] [Indexed: 01/09/2023] Open
Abstract
Materials capable of releasing reactive oxygen species (ROS) can display antibacterial and anticancer activity, and may also have anti-oxidant capacity if they suppress intracellular ROS (e.g. nitric oxide, NO) resulting in anti-inflammatory activity. Herein we report silver phosphate (Ag3PO4)/polyindole (Pln) nanocomposites which display antibacterial, anticancer and anti-inflammatory activity, and have therefore potential for a variety of biomedical applications. Materials capable of releasing reactive oxygen species (ROS) can display antibacterial and anticancer activity, and may also have antioxidant capacity if they suppress intracellular ROS (e.g. nitric oxide, NO) resulting in anti-inflammatory activity.![]()
Collapse
Affiliation(s)
- Soumik Podder
- School of Materials Science and Nanotechnology, Jadavpur University Kolkata-700032 India .,Department of Electronics and Telecommunication Engineering, C V Raman Global University Mahura Khorda Orissa-752054 India
| | - Samrat Paul
- School of Bioscience and Biomedical Engineering, Jadavpur University Kolkata-700032 India
| | - Piyali Basak
- School of Bioscience and Biomedical Engineering, Jadavpur University Kolkata-700032 India
| | - Bowen Xie
- Institute for Science and Technology in Medicine, School of Medicine, Keele University Stoke-on-Trent ST4 6QG UK
| | - Nigel J Fullwood
- Department of Biomedical and Life Sciences, Lancaster University Lancaster LA1 4YG UK
| | - Sara J Baldock
- Department of Chemistry, Lancaster University Lancaster Lancashire LA1 4YB UK
| | - Ying Yang
- Institute for Science and Technology in Medicine, School of Medicine, Keele University Stoke-on-Trent ST4 6QG UK
| | - John G Hardy
- Department of Chemistry, Lancaster University Lancaster Lancashire LA1 4YB UK .,Materials Science Institute, Lancaster University Lancaster Lancashire LA1 4YB UK
| | - Chandan K Ghosh
- School of Materials Science and Nanotechnology, Jadavpur University Kolkata-700032 India
| |
Collapse
|
21
|
Gouveia AF, Vieira VEM, Sczancoski JC, Lemos PS, Rout SK, Arul NS, Longo E, Cavalcante LS. Electronic Structure, Morphological Aspects, and Photocatalytic Discoloration of Three Organic Dyes with MgWO4 Powders Synthesized by the Complex Polymerization Method. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-019-01435-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
22
|
Santos CJ, Filho FM, Campos FL, Ferreira CDA, de Barros ALB, Soares DCF. Ag2WO4 nanoparticles radiolabeled with technetium-99m: a potential new tool for tumor identification and uptake. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06955-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
23
|
Nobre FX, Bastos IS, Dos Santos Fontenelle RO, Júnior EAA, Takeno ML, Manzato L, de Matos JME, Orlandi PP, de Fátima Souza Mendes J, Brito WR, da Costa Couceiro PR. Antimicrobial properties of α-Ag 2WO 4 rod-like microcrystals synthesized by sonochemistry and sonochemistry followed by hydrothermal conventional method. ULTRASONICS SONOCHEMISTRY 2019; 58:104620. [PMID: 31450327 DOI: 10.1016/j.ultsonch.2019.104620] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 05/24/2019] [Accepted: 05/28/2019] [Indexed: 05/29/2023]
Abstract
In this study we report the synthesis of silver tungstate microcrystals (α-Ag2WO4) by sonochemistry method (SC) at 65 °C and sonochemistry followed by conventional hydrothermal (SC + HC) for 1, 6 and 12 h, at 140 °C. The structural characterization by XRD confirms the alpha phase of the orthorhombic structure and the space group Pn2n, for all synthesized microcrystals. All the actives modes identified at the Raman spectroscopy were characteristic of alpha phase. The optical band gap by UV-Vis spectroscopy using the diffuse reflectance were 2.98, 3.0, 2.99 and 2.96 eV, for the microcrystals SC, SC + HC-1 h, SC + HC-6 h and SC + HC-12 h, respectively. FE-SEM images show the rod-like microcrystals, however, exhibiting the plane surface (1 0 1) only for the synthesized microcrystals with the assistance of the hydrothermal method (SC + HC-1 h, SC + HC- 6 h and SC + HC-12 h). The antimicrobial potential was confirmed for all α-Ag2WO4 microcrystals synthesized. However, the SC + HC-12 h microcrystals were more susceptible in the bacterial and fungal inhibition, with MIC values for microorganisms C. albicans, T. rubrum, MRSA e EHEC, 0.2-0.5, 4-9, 250 and 31.25 μg mL-1, respectively.
Collapse
Affiliation(s)
| | | | | | - Edgar Alves Araújo Júnior
- Laboratório Interdisciplinar de Materiais Avançados, Universidade Federal do Piauí, Teresina 64049-550, Amazonas, Brazil
| | - Mitsuo Lopes Takeno
- Instituto Federal do Amazonas, Campus Manaus Distrito Industrial, 69075-000 Amazonas, Brazil
| | - Lizandro Manzato
- Instituto Federal do Amazonas, Campus Manaus Distrito Industrial, 69075-000 Amazonas, Brazil
| | - José Milton Elias de Matos
- Laboratório Interdisciplinar de Materiais Avançados, Universidade Federal do Piauí, Teresina 64049-550, Amazonas, Brazil
| | | | | | - Walter Ricardo Brito
- Laboratório de Fisico-Química, Universidade Federal do Amazonas, Manaus 69077-000, Amazonas, Brazil
| | | |
Collapse
|
24
|
Wang S, Liu G, Wang L. Crystal Facet Engineering of Photoelectrodes for Photoelectrochemical Water Splitting. Chem Rev 2019; 119:5192-5247. [PMID: 30875200 DOI: 10.1021/acs.chemrev.8b00584] [Citation(s) in RCA: 260] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Photoelectrochemical (PEC) water splitting is a promising approach for solar-driven hydrogen production with zero emissions, and it has been intensively studied over the past decades. However, the solar-to-hydrogen (STH) efficiencies of the current PEC systems are still far from the 10% target needed for practical application. The development of efficient photoelectrodes in PEC systems holds the key to achieving high STH efficiencies. In recent years, crystal facet engineering has emerged as an important strategy in designing efficient photoelectrodes for PEC water splitting, which has yet to be comprehensively reviewed and is the main focus of this article. After the Introduction, the second section of this review concisely introduces the mechanisms of crystal facet engineering. The subsequent section provides a snapshot of the unique facet-dependent properties of some semiconductor crystals including surface electronic structures, redox reaction sites, surface built-in electric fields, molecular adsorption, photoreaction activity, photocorrosion resistance, and electrical conductivity. Then, the methods for fabricating photoelectrodes with faceted semiconductor crystals are reviewed, with a focus on the preparation processes. In addition, the notable advantages of the crystal facet engineering of photoelectrodes in terms of light harvesting, charge separation and transfer, and surface reactions are critically discussed. This is followed by a systematic overview of the modification strategies of faceted photoelectrodes to further enhance the PEC performance. The last section summarizes the major challenges and some invigorating perspectives for future research on crystal facet engineered photoelectrodes, which are believed to play a vital role in promoting the development of this important research field.
Collapse
Affiliation(s)
- Songcan Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Gang Liu
- Shenyang National Laboratory for Materials Science , Institute of Metal Research Chinese Academy of Sciences , 72 Wenhua Road , Shenyang 110016 , China.,School of Materials Science and Engineering , University of Science and Technology of China , 72 Wenhua Road , Shenyang 110016 , China
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| |
Collapse
|
25
|
Macedo NG, Machado TR, Roca RA, Assis M, Foggi CC, Puerto-Belda V, Mínguez-Vega G, Rodrigues A, San-Miguel MA, Cordoncillo E, Beltrán-Mir H, Andrés J, Longo E. Tailoring the Bactericidal Activity of Ag Nanoparticles/α-Ag2WO4 Composite Induced by Electron Beam and Femtosecond Laser Irradiation: Integration of Experiment and Computational Modeling. ACS APPLIED BIO MATERIALS 2019; 2:824-837. [DOI: 10.1021/acsabm.8b00673] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nadia G. Macedo
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | - Thales R. Machado
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | - Roman A. Roca
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | - Marcelo Assis
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | - Camila Cristina Foggi
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| | | | | | - André Rodrigues
- Department of Physical Chemistry, Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | - Miguel A. San-Miguel
- Department of Physical Chemistry, Institute of Chemistry, State University of Campinas, Campinas, São Paulo 13083-970, Brazil
| | | | | | | | - Elson Longo
- CDMF, LIEC, Federal University of São Carlos (UFSCar), P.O. Box 676, São Carlos, São Paulo13565-905, Brazil
| |
Collapse
|
26
|
Rahut S, Basu SS, Basu JK. Surfactant assisted self-assembly of Ag+ containing nanocrystals and their facet dependent photocatalytic activity. CrystEngComm 2019. [DOI: 10.1039/c8ce01563e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This work demonstrates a general route for synthesis of nanocatalysts containing silver ions using surfactants.
Collapse
Affiliation(s)
- Sibsankar Rahut
- Department of Chemical Engineering
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Soumya Shankar Basu
- Department of Chemical Engineering
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Jayanta Kumar Basu
- Department of Chemical Engineering
- Indian Institute of Technology
- Kharagpur 721302
- India
| |
Collapse
|
27
|
Wang BY, Zhang GY, Cui GW, Xu YY, Liu Y, Xing CY. Controllable fabrication of α-Ag2WO4 nanorod-clusters with superior simulated sunlight photocatalytic performance. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01025k] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work presents the greatly boosted photoactivity of α-Ag2WO4 nanorod-clusters fabricated by adjusting the molar ratio of raw materials.
Collapse
Affiliation(s)
- Bing-Yu Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Guo-Ying Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Guan-Wei Cui
- College of Chemistry
- Chemical Engineering and Materials Science
- Shandong Normal University
- Jinan 250014
- P. R. China
| | - Yan-Yan Xu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Yue Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| | - Chun-Yan Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- P. R. China
| |
Collapse
|
28
|
P. S. L, G. S. S, R. A. R, M. A, R. TM, H. BM, G. MV, E. C, J. A, E. L. Laser and electron beam-induced formation of Ag/Cr structures on Ag2CrO4. Phys Chem Chem Phys 2019; 21:6101-6111. [DOI: 10.1039/c8cp07263a] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The interactions of silver chromate with a femtosecond laser and electron beam irradiations were investigated.
Collapse
Affiliation(s)
- Lemos P. S.
- INCTMN-CDMF, Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Silva G. S.
- INCTMN-CDMF, Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Roca R. A.
- INCTMN-CDMF, Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Assis M.
- INCTMN-CDMF, Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Torres-Mendieta R.
- Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec
- 461 17 Liberec
- Czech Republic
| | - Beltrán-Mir H.
- Department of Inorganic and Organic Chemistry, University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Mínguez-Vega G.
- GROC UJI, Institut de Noves Tecnologies de la Imatge (INIT), University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Cordoncillo E.
- Department of Inorganic and Organic Chemistry, University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Andrés J.
- Department of Analytical and Physical Chemistry, University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Longo E.
- INCTMN-UNESP, Universidade Estadual Paulista
- 14801-907 Araraquara
- Brazil
| |
Collapse
|
29
|
Askari P, Mohebbi S, Do TO. High performance plasmonic activation of Ag on β-Ag2WO4/BiVO4 as nanophotocatalyst for oxidation of alcohols by incident visible light. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
30
|
Pereira PFS, Gouveia AF, Assis M, de Oliveira RC, Pinatti IM, Penha M, Gonçalves RF, Gracia L, Andrés J, Longo E. ZnWO4 nanocrystals: synthesis, morphology, photoluminescence and photocatalytic properties. Phys Chem Chem Phys 2018; 20:1923-1937. [DOI: 10.1039/c7cp07354b] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The best photocatalytic properties for monoclinic ZnWO4 nanocrystals are related to the surface energy and the types of clusters formed on their surface.
Collapse
|
31
|
Liu D, Huang W, Li L, Liu L, Sun X, Liu B, Yang B, Guo C. Experimental and theoretical investigation on photocatalytic activities of 1D Ag/Ag 2WO 4 nanostructures. NANOTECHNOLOGY 2017; 28:385702. [PMID: 28675753 DOI: 10.1088/1361-6528/aa7d96] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ag2WO4 is a significant photocatalyst that responds to UV light irradiation only, which greatly hinders it for further practical application for solar light. To address this problem, herein, 1D plasmonic Ag/Ag2WO4 photocatalysts have been fabricated by a successive process including hydrothermal synthesis to obtain Ag2WO4 followed by an additional in situ chemical-reduction process for Ag decoration. Then, the structural features, optical properties, and electronic structures of Ag2WO4 and Ag/Ag2WO4 nanowires were systematically investigated via a combination of theoretical calculations and experimental evidence. The plasmon-enhanced Ag/Ag2WO4 nanowires exhibited higher visible-light-driven photocatalytic activity, which performed a desired photodestruction ratio of 91.2% on methylene blue within 60 min and good stability in five cycles. The Ag decoration greatly facilitates visible-light harvesting and thus promotes photogenerated radical oxidation to dye, which is evidenced by the higher hydroxyl radical level of Ag/Ag2WO4 detected in the ESR test during the photocatalytic process. The theoretical calculation based on density functional theory indicates that Ag nanoparticles formed on the surface of Ag2WO4 could narrow the band gap of Ag2WO4. In addition, the surface plasmon resonance absorption effect and fast charge transfer effect in the metal-semiconductor system contribute to the photocatalytic performance of Ag/Ag2WO4.
Collapse
Affiliation(s)
- Danqing Liu
- School of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Souza ELS, Sczancoski JC, Nogueira IC, Almeida MAP, Orlandi MO, Li MS, Luz RAS, Filho MGR, Longo E, Cavalcante LS. Structural evolution, growth mechanism and photoluminescence properties of CuWO 4 nanocrystals. ULTRASONICS SONOCHEMISTRY 2017; 38:256-270. [PMID: 28633825 DOI: 10.1016/j.ultsonch.2017.03.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/06/2017] [Accepted: 03/06/2017] [Indexed: 05/27/2023]
Abstract
Copper tungstate (CuWO4) crystals were synthesized by the sonochemistry (SC) method, and then, heat treated in a conventional furnace at different temperatures for 1h. The structural evolution, growth mechanism and photoluminescence (PL) properties of these crystals were thoroughly investigated. X-ray diffraction patterns, micro-Raman spectra and Fourier transformed infrared spectra indicated that crystals heat treated and 100°C and 200°C have water molecules in their lattice (copper tungstate dihydrate (CuWO4·2H2O) with monoclinic structure), when the crystals are calcinated at 300°C have the presence of two phase (CuWO4·2H2O and CuWO4), while the others heat treated at 400°C and 500°C have a single CuWO4 triclinic structure. Field emission scanning electron microscopy revealed a change in the morphological features of these crystals with the increase of the heat treatment temperature. Transmission electron microscopy (TEM), high resolution-TEM images and selected area electron diffraction were employed to examine the shape, size and structure of these crystals. Ultraviolet-Visible spectra evidenced a decrease of band gap values with the increase of the temperature, which were correlated with the reduction of intermediary energy levels within the band gap. The intense photoluminescence (PL) emission was detected for the sample heat treat at 300°C for 1h, which have a mixture of CuWO4·2H2O and CuWO4 phases. Therefore, there is a synergic effect between the intermediary energy levels arising from these two phases during the electronic transitions responsible for PL emissions.
Collapse
Affiliation(s)
- E L S Souza
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - J C Sczancoski
- DQ-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, São Carlos, SP 13565-905, Brazil
| | - I C Nogueira
- ICE-Universidade Federal do Amazonas, Av. Rodrigo Otávio Japiim, P.O. Box 670, 69077-000 Manaus, AM, Brazil
| | - M A P Almeida
- CCT-Universidade Federal do Maranhão, P.O. Box 322, 65080-805 São Luís, MA, Brazil
| | - M O Orlandi
- Departamento de Físico-Química, Universidade Estadual Paulista, 14800-060 Araraquara, SP, Brazil
| | - M S Li
- IFSC-Universidade de São Paulo, P.O. Box 369, 13560-970 São Carlos, SP, Brazil
| | - R A S Luz
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - M G R Filho
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - E Longo
- Departamento de Físico-Química, Universidade Estadual Paulista, 14800-060 Araraquara, SP, Brazil
| | - L S Cavalcante
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil.
| |
Collapse
|
33
|
Pereira PFS, Santos CC, Gouveia AF, Ferrer MM, Pinatti IM, Botelho G, Sambrano JR, Rosa ILV, Andrés J, Longo E. α-Ag2–2xZnxWO4 (0 ≤ x ≤ 0.25) Solid Solutions: Structure, Morphology, and Optical Properties. Inorg Chem 2017; 56:7360-7372. [DOI: 10.1021/acs.inorgchem.7b00201] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paula F. S. Pereira
- CDMF,
LIEC, São Paulo State University, P.O. Box 355, Araraquara 14800-900, Brazil
| | - Clayane C. Santos
- CDMF,
LIEC, Federal University of São Carlos, P.O. Box 676, São Carlos 13565-905, Brazil
| | - Amanda F. Gouveia
- CDMF,
LIEC, Federal University of São Carlos, P.O. Box 676, São Carlos 13565-905, Brazil
| | - Mateus M. Ferrer
- Modeling
and Molecular Simulations Group, São Paulo State University, P.O. Box 473, Bauru 17033-360, Brazil
| | - Ivo M. Pinatti
- CDMF,
LIEC, Federal University of São Carlos, P.O. Box 676, São Carlos 13565-905, Brazil
| | - Gleice Botelho
- CDMF,
LIEC, Federal University of São Carlos, P.O. Box 676, São Carlos 13565-905, Brazil
| | - Julio R. Sambrano
- Modeling
and Molecular Simulations Group, São Paulo State University, P.O. Box 473, Bauru 17033-360, Brazil
| | - Ieda L. V. Rosa
- CDMF,
LIEC, Federal University of São Carlos, P.O. Box 676, São Carlos 13565-905, Brazil
| | - Juan Andrés
- Department
of Analytical and Physical Chemistry, University Jaume I, Castelló 12071, Spain
| | - Elson Longo
- CDMF,
LIEC, São Paulo State University, P.O. Box 355, Araraquara 14800-900, Brazil
| |
Collapse
|
34
|
|
35
|
Moura J, Freitas T, Cruz R, Pereira R, Silva A, Santos A, da Silva J, Luz-Lima C, Freire P, Coutinho H. β-Ag2MoO4 microcrystals: Characterization, antibacterial properties and modulation analysis of antibiotic activity. Biomed Pharmacother 2017; 86:242-247. [DOI: 10.1016/j.biopha.2016.12.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/06/2016] [Accepted: 12/07/2016] [Indexed: 10/20/2022] Open
|
36
|
Roca RA, Lemos PS, Gracia L, Andrés J, Longo E. Uncovering the metastable γ-Ag2WO4 phase: a joint experimental and theoretical study. RSC Adv 2017. [DOI: 10.1039/c6ra24692c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A combination of experiments and simulation provides a fundamental understanding of the structure of materials.
Collapse
Affiliation(s)
- Roman Alvarez Roca
- CDMF-UFSCar-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Pablo S. Lemos
- CDMF-UFSCar-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - Lourdes Gracia
- Department of Analytical and Physical Chemistry
- University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Juan Andrés
- Department of Analytical and Physical Chemistry
- University Jaume I (UJI)
- Castelló 12071
- Spain
| | - Elson Longo
- CDMF-UFSCar-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| |
Collapse
|
37
|
Bai S, Wang L, Li Z, Xiong Y. Facet-Engineered Surface and Interface Design of Photocatalytic Materials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1600216. [PMID: 28105398 PMCID: PMC5238752 DOI: 10.1002/advs.201600216] [Citation(s) in RCA: 133] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 06/28/2016] [Indexed: 05/19/2023]
Abstract
The facet-engineered surface and interface design for photocatalytic materials has been proven as a versatile approach to enhance their photocatalytic performance. This review article encompasses some recent advances in the facet engineering that has been performed to control the surface of mono-component semiconductor systems and to design the surface and interface structures of multi-component heterostructures toward photocatalytic applications. The review begins with some key points which should receive attention in the facet engineering on photocatalytic materials. We then discuss the synthetic approaches to achieve the facet control associated with the surface and interface design. In the following section, the facet-engineered surface design on mono-component photocatalytic materials is introduced, which forms a basis for the discussion on more complex systems. Subsequently, we elucidate the facet-engineered surface and interface design of multi-component photocatalytic materials. Finally, the existing challenges and future prospects are discussed.
Collapse
Affiliation(s)
- Song Bai
- Hefei National Laboratory for Physical Sciences at the MicroscaleiChEM (Collaborative Innovation Center of Chemistry for Energy Materials)Hefei Science Center (CAS) and School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026China
- Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsCollege of Chemistry and Life SciencesInstitute of Physical and ChemistryZhejiang Normal UniversityJinhuaZhejiang321004China
| | - Lili Wang
- Hefei National Laboratory for Physical Sciences at the MicroscaleiChEM (Collaborative Innovation Center of Chemistry for Energy Materials)Hefei Science Center (CAS) and School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026China
| | - Zhengquan Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsCollege of Chemistry and Life SciencesInstitute of Physical and ChemistryZhejiang Normal UniversityJinhuaZhejiang321004China
| | - Yujie Xiong
- Hefei National Laboratory for Physical Sciences at the MicroscaleiChEM (Collaborative Innovation Center of Chemistry for Energy Materials)Hefei Science Center (CAS) and School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui230026China
| |
Collapse
|
38
|
Sonochemical fabrication, characterization and enhanced photocatalytic performance of Ag2S/Ag2WO4 composite microrods. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(16)62515-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
39
|
Xiao F, Li Y, Ren Y, Shen X, Liu Y, Yang H. Preparation of Pd/C nanocatalyst for hydropurification of terephthalic acid from aqueous colloid solution. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.05.069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
40
|
Roca RA, Gouveia AF, Lemos PS, Gracia L, Andrés J, Longo E. Formation of Ag Nanoparticles on β-Ag2WO4 through Electron Beam Irradiation: A Synergetic Computational and Experimental Study. Inorg Chem 2016; 55:8661-71. [DOI: 10.1021/acs.inorgchem.6b01215] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roman A. Roca
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905 São Carlos-SP, Brazil
| | - Amanda F. Gouveia
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905 São Carlos-SP, Brazil
| | - Pablo S. Lemos
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905 São Carlos-SP, Brazil
| | - Lourdes Gracia
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló 12071, Spain
| | - Juan Andrés
- Department of Analytical and Physical Chemistry, University Jaume I (UJI), Castelló 12071, Spain
| | - Elson Longo
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box 676, CEP, 13565-905 São Carlos-SP, Brazil
| |
Collapse
|
41
|
Silva GS, Gracia L, Fabbro MT, Serejo dos Santos LP, Beltrán-Mir H, Cordoncillo E, Longo E, Andrés J. Theoretical and Experimental Insight on Ag2CrO4 Microcrystals: Synthesis, Characterization, and Photoluminescence Properties. Inorg Chem 2016; 55:8961-70. [DOI: 10.1021/acs.inorgchem.6b01452] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gabriela S. Silva
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box
676, CEP, 13565-905 São Carlos, São Paulo, Brazil
| | | | - Maria T. Fabbro
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box
676, CEP, 13565-905 São Carlos, São Paulo, Brazil
| | - Luis P. Serejo dos Santos
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box
676, CEP, 13565-905 São Carlos, São Paulo, Brazil
| | | | | | - Elson Longo
- CDMF-UFSCar-Universidade Federal de São Carlos, P.O. Box
676, CEP, 13565-905 São Carlos, São Paulo, Brazil
| | | |
Collapse
|
42
|
San-Miguel MA, da Silva EZ, Zannetti SM, Cilense M, Fabbro MT, Gracia L, Andrés J, Longo E. In situ growth of Ag nanoparticles on α-Ag2WO4 under electron irradiation: probing the physical principles. NANOTECHNOLOGY 2016; 27:225703. [PMID: 27114472 DOI: 10.1088/0957-4484/27/22/225703] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Exploiting the plasmonic behavior of Ag nanoparticles grown on α-Ag2WO4 is a widely employed strategy to produce efficient photocatalysts, ozone sensors, and bactericides. However, a description of the atomic and electronic structure of the semiconductor sites irradiated by electrons is still not available. Such a description is of great importance to understand the mechanisms underlying these physical processes and to improve the design of silver nanoparticles to enhance their activities. Motivated by this, we studied the growth of silver nanoparticles to investigate this novel class of phenomena using both transmission electron microscopy and field emission scanning electron microscopy. A theoretical framework based on density functional theory calculations (DFT), together with experimental analysis and measurements, were developed to examine the changes in the local geometrical and electronic structure of the materials. The physical principles for the formation of Ag nanoparticles on α-Ag2WO4 by electron beam irradiation are described. Quantum mechanical calculations based on DFT show that the (001) of α-Ag2WO4 displays Ag atoms with different coordination numbers. Some of them are able to diffuse out of the surface with a very low energy barrier (less than 0.1 eV), thus, initiating the growth of metallic Ag nanostructures and leaving Ag vacancies in the bulk material. These processes increase the structural disorder of α-Ag2WO4 as well as its electrical resistance as observed in the experimental measurements.
Collapse
Affiliation(s)
- Miguel A San-Miguel
- Institute of Chemistry, State University of Campinas-Unicamp, 13083-970, Campinas, SP, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
43
|
A S, K P P, K K B, S G, Varghese T. Influence of electron beam irradiation on structural and optical properties of α-Ag2WO4 nanoparticles. Micron 2016; 88:1-6. [PMID: 27223824 DOI: 10.1016/j.micron.2016.05.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 05/05/2016] [Accepted: 05/06/2016] [Indexed: 11/19/2022]
Abstract
The influence of 8MeV electron beam irradiation on the structural and optical properties of silver tungstate (α-Ag2WO4) nanoparticles synthesized by chemical precipitation method was investigated. The dose dependent effect of electron irradiation was investigated by various characterization techniques such as, X-ray diffraction, scanning electron microscopy, UV-vis absorption spectroscopy, photoluminescence and Raman spectroscopy. Systematic studies confirm that electron beam irradiation induces non-stoichiometry, defects and particle size variation on α-Ag2WO4, which in turn results changes in optical band gap, photoluminescence spectra and Raman bands.
Collapse
Affiliation(s)
- Sreedevi A
- Dept. of Applied Science and Humanities, Thejus Engineering College, Thrissur 680584, Kerala, India; Research and Development Centre, Bharathiar University, Coimbatore 641046, India
| | - Priyanka K P
- Nanoscience Research Centre (NSRC), Dept. of Physics, Nirmala College, Muvattupuzha 686 661, Kerala, India
| | - Babitha K K
- Nanoscience Research Centre (NSRC), Dept. of Physics, Nirmala College, Muvattupuzha 686 661, Kerala, India
| | - Ganesh S
- Dept. of Physics, Mangalore University, Mangalagamgotri, Karnataka, India
| | - T Varghese
- Nanoscience Research Centre (NSRC), Dept. of Physics, Nirmala College, Muvattupuzha 686 661, Kerala, India.
| |
Collapse
|
44
|
In situ Transmission Electron Microscopy observation of Ag nanocrystal evolution by surfactant free electron-driven synthesis. Sci Rep 2016; 6:21498. [PMID: 26979671 PMCID: PMC4793220 DOI: 10.1038/srep21498] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 01/26/2016] [Indexed: 11/29/2022] Open
Abstract
The study of the interaction of electron irradiation with matter and the response of the material to the passage of electrons is a very challenging problem. However, the growth mechanism observed during nanostructural evolution appears to be a broad and promising scientific field in nanotechnology. We report the in situ TEM study of nanostructural evolution of electron-driven silver (Ag) nanocrystals through an additive-free synthetic procedure. Observations revealed the direct effect of the electron beam on the morphological evolution of Ag nanocrystals through different mechanisms, such as mass transport, site-selective coalescence, and an appropriate structural configuration after coalescence leading to a more stable configuration. A fundamental understanding of the growth and formation mechanisms of Ag nanocrystals, which interact with the electron beam, is essential to improve the nanocrystal shape-control mechanisms as well as the future design and study of nanomaterials.
Collapse
|
45
|
Alvarez Roca R, Lemos PS, Andrés J, Longo E. Formation of Ag nanoparticles on metastable β-Ag2WO4 microcrystals induced by electron irradiation. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2015.11.048] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
46
|
Ng CHB, Fan WY. Preparation of highly uniform 1-dimensional α-Ag2WO4nanostructures with controllable aspect ratio and study of the growth mechanism. CrystEngComm 2016. [DOI: 10.1039/c6ce01298a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
47
|
Lemos PS, Altomare A, Gouveia AF, Nogueira IC, Gracia L, Llusar R, Andrés J, Longo E, Cavalcante LS. Synthesis and characterization of metastable β-Ag2WO4: an experimental and theoretical approach. Dalton Trans 2016; 45:1185-91. [DOI: 10.1039/c5dt03754a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The geometry, cluster coordination and electronic structure of metastable β-Ag2WO4 microcrystals were elucidated using experimental techniques and first-principles calculations.
Collapse
Affiliation(s)
- Pablo S. Lemos
- DQ-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - A. Altomare
- Institute of Crystallography-CNR
- 70126 Bari
- Italy
| | - A. F. Gouveia
- DQ-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
| | - I. C. Nogueira
- Instituto Federal do Maranhão
- PPG em Engenharia de Materiais
- São Luís
- Brazil
| | - L. Gracia
- CDMF-Universidade Estadual Paulista
- Araraquara
- Brazil
- University Jaume I
- Department of Analytical and Physical Chemistry
| | - R. Llusar
- University Jaume I
- Department of Analytical and Physical Chemistry
- 12071 Castellon
- Spain
| | - J. Andrés
- University Jaume I
- Department of Analytical and Physical Chemistry
- 12071 Castellon
- Spain
| | - E. Longo
- DQ-Universidade Federal de São Carlos
- 13565-905 São Carlos
- Brazil
- CDMF-Universidade Estadual Paulista
- Araraquara
| | | |
Collapse
|
48
|
de Oliveira RC, Gracia L, Assis M, Li MS, Andres J, Longo E, Cavalcante LS. Disclosing the electronic structure and optical properties of Ag4V2O7crystals: experimental and theoretical insights. CrystEngComm 2016. [DOI: 10.1039/c6ce01269h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
49
|
Tian S, Wang S, Wu Y, Gao J, Wang P, Xie H, Yang G, Han Y, Tan Y. The role of potassium promoter in isobutanol synthesis over Zn–Cr based catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02030a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The potassium promoter would tailor the microstructure of the Zn–Cr spinel and stabilize the surface hydroxyl species which greatly facilitate the formate of isobutanol.
Collapse
Affiliation(s)
- Shaopeng Tian
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Sichen Wang
- Shaanxi Yanchang Petroleum (Group) Corp. Ltd
- Xi'an
- PR China
| | - Yingquan Wu
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Junwen Gao
- Shaanxi Yanchang Petroleum (Group) Corp. Ltd
- Xi'an
- PR China
| | - Peng Wang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Hongjuan Xie
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Guohui Yang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Yizhuo Han
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| | - Yisheng Tan
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan
- China
| |
Collapse
|
50
|
Botelho G, Andres J, Gracia L, Matos LS, Longo E. Photoluminescence and Photocatalytic Properties of Ag 3 PO 4 Microcrystals: An Experimental and Theoretical Investigation. Chempluschem 2015; 81:202-212. [PMID: 31968763 DOI: 10.1002/cplu.201500485] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Indexed: 11/09/2022]
Abstract
The structural, morphological, and optical properties of Ag3 PO4 microcrystals were systematically characterized by using a combination of theoretical calculations and experimental techniques. These microcrystals were synthesized by the microwave-assisted hydrothermal (MAH) method. XRD, Rietveld refinements, and FTIR spectroscopy were employed to carry out a structural analysis; the morphologies of the microcrystals were examined by FEG-SEM. First-principles computational studies were used to calculate the geometries of bulk Ag3 PO4 and its (010), (100), (001), (110), (101), (011), and (111) surfaces. A continuous decrease in the energy of the (100) surface led to a good agreement between the experimental and theoretical morphologies. Optical properties were investigated by UV/Vis spectroscopy and photoluminescence (PL) measurements, which revealed a maximum PL emission at λ=444 nm. The MAH-synthesized sample exhibited good activity for the photocatalytic degradation of methyl orange dye under visible irradiation. The photocatalytic activity and PL behavior were correlated with the observed morphology.
Collapse
Affiliation(s)
- Gleice Botelho
- INCTMN-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, 13565-905, São Carlos, SP, Brazil
| | - Juan Andres
- Departament de Química Física i Analítica, Universitat Jaume I, 12071, Castelló de la Plana, Spain
| | - Lourdes Gracia
- Departament de Química Física i Analítica, Universitat Jaume I, 12071, Castelló de la Plana, Spain
| | - Leandro S Matos
- INCTMN-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, 13565-905, São Carlos, SP, Brazil
| | - Elson Longo
- INCTMN-UNESP, Universidade Estadual Paulista, P.O. Box 355, CEP., 14801-907, Araraquara, SP, Brazil
| |
Collapse
|