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He Y, Zhong D, Xu Y, Jiang R, Zhang J, Liao P. Preparation of Ti/SnO 2-Sb 2O 4-La Electrode with TiO 2 Nanotubes Intermediate Layer and the Electrochemical Oxidation Performance of Rhodamine B. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7569-7580. [PMID: 38544311 DOI: 10.1021/acs.langmuir.4c00177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
A La-doped Ti/SnO2-Sb2O4 electrode with TiO2-NTs intermediate layer (Ti/TiO2-NTs/SnO2-Sb2O4-La) was created via the electrodeposition technique. The physicochemical and electrochemical properties of the electrode were analyzed through FESEM, XRD, XPS, CV, and LSV electrochemical tests. The results showed that TiO2-NTs were tightly packed on the surface of Ti substrate, thus improving the binding force of the SnO2-Sb2O4-La coating, offering greater specific surface area, more active spots, higher current response, and longer lifespan for the degradation of rhodamine B. The lifespan of the Ti/TiO2-NTs/SnO2-Sb2O4-La electrode reached 200 min (1000 mA cm-2, 1 M H2SO4), while the actual service life was up to 3699 h. Under the conditions of initial pH 3.0, Na2SO4 concentration of 0.1 M, current density of 30 mA cm-2, and initial rhodamine B concentration of 20 mg L-1, the color and TOC removal rate of rhodamine B reached 100% and 86.13% within 15 and 30 min, respectively. Rhodamine B was decomposed into acids, esters, and other molecular compounds under the action of •OH and SO4•- free radicals and electrocatalysis, and finally completely mineralized into CO2 and H2O. It is anticipated that this work will yield a novel research concept for producing DSA electrodes with superior catalytic efficacy and elevated stability.
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Affiliation(s)
- Yuanzhen He
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Dengjie Zhong
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Yunlan Xu
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Ran Jiang
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Jiayou Zhang
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Pengfei Liao
- School of Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
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2
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Abbasi S, Li Z, Dastan D, Tao L. The effect of individual factors, their binary and ternary interactions on photodegradation rate of organic contaminants using photocatalysts based on multi-walled carbon nanotubes (MWCNTs): statistical analysis based on ANOVA and RSM. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1191. [PMID: 37698686 DOI: 10.1007/s10661-023-11704-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 08/09/2023] [Indexed: 09/13/2023]
Abstract
The influence of three main parameters including irradiation time, weight fraction of photocatalysts including multi-walled carbon nanotubes and different amount of TiO2 (MCT#1 and MCT#2) and pH is investigated for the degradation rate of methyl orange (MO). Analysis of variance (ANOVA) and response surface methodology (RSM) have been applied to study the binary and ternary interactions of the main parameters on the degradation rate. The ANOVA results confirm that all of three studied factors have a considerable efficacy on degradation rate of MO at 5% level of probability. Meanwhile, the results show that the degradation rate is enhanced with increasing the weight fraction in range of 0.1 to 0.3%wt and irradiation time in a period of 5 to 35min.The lowest and highest degradation are observed at pH=7 and pH=3, respectively. The normality of residue distribution can be confirmed using graphical analysis. The RSM results reveal that the degradation rate dependency on irradiation time is higher than the weight fraction of photocatalysts.
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Affiliation(s)
- Sedigheh Abbasi
- Central Research Laboratory, Esfarayen University of Technology, Esfarayen, North Khorasan, Iran.
| | - Zhi Li
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, Liaoning, People's Republic of China
| | - Davoud Dastan
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Lin Tao
- School of Chemical Engineering, University of Science and Technology Liaoning, Anshan, 114051, Liaoning, China
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3
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Serbout W, Bensouici F, Meglali O, Iaiche S, Bououdina M, Bellucci S, Humayun M. Fabrication of ordered layered SnO 2/TiO 2 heterostructures and their photocatalytic performance for methyl blue degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:85792-85802. [PMID: 37392297 DOI: 10.1007/s11356-023-28451-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023]
Abstract
The rapid growth in population and industrialization has given rise to serious environmental issues, especially the water pollution. Photocatalysis with the assist of semiconductor photocatalysts has been considered as an advanced oxidation technique for degrading a variety of pollutants under solar irradiation. In this work, we have fabricated SnO2-TiO2 heterostructures with different ordered layers of SnO2 and TiO2 via the sol-gel dip-coating technique and utilized in photocatalysis for degradation of methyl blue dye under UV irradiation. The influence of the layer's position on SnO2 and TiO2 properties is investigated via the various techniques. The grazing incidence X-ray diffraction (GIXRD) analysis reveals that the as-prepared films exhibit pure anatase TiO2 and kesterite SnO2 phases. The 2SnO2/2TiO2 heterostructure exhibit the maximum crystallite size and smallest deviation from the ideal structure. Scanning electron microscopy cross-section images manifest good adhesion of the layers to each other and to the substrate. Fourier transform infrared spectroscopy reveals the characteristic vibration modes of SnO2 and TiO2 phases. UV-visible spectroscopy measurements indicate that all films exhibit high transparency (T = 80%) and the SnO2 film reveals a direct band gap of 3.6 eV, while the TiO2 film exhibits an indirect band gap of 2.9 eV. The optimal 2SnO2/2TiO2 heterostructure film revealed best photocatalytic degradation performance and the reaction rate constant for methylene blue solution under UV irradiation. This work will trigger the development of highly efficient heterostructure photocatalysts for environmental remediation.
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Affiliation(s)
- Walid Serbout
- Materials Science and Informatics Laboratory, Ziane Achour University, 17000, Djelfa, Algeria
| | - Fayçal Bensouici
- Laboratory of Structures, Properties and Intermolecular Interactions LASPI2A, Department of Matter, Abbes Laghrour University, 40.000, Khenchela, Algeria
| | - Omar Meglali
- Materials Science and Informatics Laboratory, Ziane Achour University, 17000, Djelfa, Algeria
- Faculty of Sciences, Mohammed Boudiaf University, M'Sila, 28000, Algeria
| | - Sabrina Iaiche
- Laboratory of Structures, Properties and Intermolecular Interactions LASPI2A, Department of Matter, Abbes Laghrour University, 40.000, Khenchela, Algeria
| | - Mohamed Bououdina
- Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia
| | - Steffano Bellucci
- INFN-Laboratori Nazionali Di Frascati, Vie. E. Fermi 54, 00044, Frascati, Italy
| | - Muhammad Humayun
- Energy, Water, and Environment Lab, College of Humanities and Sciences, Prince Sultan University, Riyadh, 11586, Saudi Arabia.
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Rangel-Vázquez I, Del Angel G, Ramos-Ramírez E, González F, Acevedo-Peña P, Gómez CM, Tzompantzi F, Gutiérrez-Ortega N, Torres-Torres JG. Improvement of photocatalytic activity in the degradation of 4-chlorophenol and phenol in aqueous medium using tin-modified TiO 2 photocatalysts. RSC Adv 2023; 13:13862-13879. [PMID: 37181503 PMCID: PMC10173256 DOI: 10.1039/d3ra01910a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/01/2023] [Indexed: 05/16/2023] Open
Abstract
In this work, we present the synthesis of TiO2 photocatalysts modified with different % mol of tin using the sol-gel method. The materials were characterized using different analytical techniques. The Rietveld refinement, XPS, Raman and UV-Vis techniques confirm the substitution of tin in the TiO2 structural lattice due to changes in crystal lattice parameters, the low-energy shift of the Sn 3d5/2 orbital, generation of oxygen vacancies and the decreased band gap and increased BET surface area. The material with 1 mol% tin shows superior catalytic activity compared to the references for the degradation of 40 ppm 4-chlorophenol (3 hours of reaction) and 50 ppm phenol (6 hours of reaction). Reactions fit pseudo first order kinetics in both instances. The increase in photodegradation efficiency was attributed to the generation of energy levels below the TiO2 conduction band caused by the incorporation of 1% mol of tin, oxygen vacancies, and the heterojunction formed between the brookite-anatase-rutile, causing inhibition of the recombination of the electron (e-) and hole (h+) photogenerated species. The easy synthesis, low cost and increased photodegradation efficiency of the photocatalyst with 1 mol% tin have the potential to favor the remediation of recalcitrant compounds in water.
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Affiliation(s)
- I Rangel-Vázquez
- Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato de la Universidad de Guanajuato Noria Alta s/n, Col. Noria Alta, Gto Guanajuato C. P. 36050 Mexico
| | - G Del Angel
- Departamento de Química Av. Ferrocarril San Rafael Atlixco, Núm. 186, Col. Leyes de Reforma 1 A Sección, Alcaldía Iztapalapa C.P. 09310 Ciudad de México México
| | - E Ramos-Ramírez
- Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato de la Universidad de Guanajuato Noria Alta s/n, Col. Noria Alta, Gto Guanajuato C. P. 36050 Mexico
| | - F González
- Departamento de Ingenieria de Procesos e Hidráulica, Universidad Autónoma Metropolitana-Iztapalapa Av. Ferrocarril San Rafael Atlixco, Núm. 186, Col. Leyes de Reforma 1 A Sección, Alcaldía Iztapalapa C.P. 09310 Ciudad de México México
| | - Próspero Acevedo-Peña
- CONACYT-Laboratorio Nacional de Conversión y Almacenamiento de Energía CICATA-Legaria, Instituto Politecnico Nacional Calzada Legaria 694. Col. Irrigación C. P. 11500 Ciudad de México Mexico
| | - C Martínez Gómez
- Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato de la Universidad de Guanajuato Noria Alta s/n, Col. Noria Alta, Gto Guanajuato C. P. 36050 Mexico
| | - F Tzompantzi
- Departamento de Química Av. Ferrocarril San Rafael Atlixco, Núm. 186, Col. Leyes de Reforma 1 A Sección, Alcaldía Iztapalapa C.P. 09310 Ciudad de México México
| | - Norma Gutiérrez-Ortega
- División de Ingenierias, Departamento de Ingeniería Civil y Ambiental, Universidad de Guanajuato Gto Guanajuato 36000 Mexico
| | - J G Torres-Torres
- Universidad Juárez Autónoma de Tabasco, Laboratorio de Nanomateriales Catalíticos Aplicados al Desarrollo de Fuentes de Energía y de Remediación Ambiental, Centro de Investigación de Ciencia y Tecnología Aplicada de Tabasco (CICTAT), DACB Km. 1 Carretera Cunduacán-Jalpa de Méndez AP. 24, Cunduacán C. P. 86690 Tabasco Mexico
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5
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Shabna S, Dhas SSJ, Biju C. Potential progress in SnO2 nanostructures for enhancing photocatalytic degradation of organic pollutants. CATAL COMMUN 2023. [DOI: 10.1016/j.catcom.2023.106642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
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6
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Habib A, Ikram M, Haider A, Ul-Hamid A, Shahzadi I, Haider J, Kanoun MB, Goumri-Said S, Nabgan W. Experimental and theoretical study of catalytic dye degradation and bactericidal potential of multiple phase Bi and MoS 2 doped SnO 2 quantum dots †. RSC Adv 2023; 13:10861-10872. [PMID: 37033429 PMCID: PMC10077344 DOI: 10.1039/d3ra00698k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/30/2023] [Indexed: 04/08/2023] Open
Abstract
In the present study, different concentrations (1 and 3%) of Bi were incorporated into a fixed amount of molybdenum disulfide (MoS2) and SnO2 quantum dots (QDs) by co-precipitation technique. This research aimed to increase the efficacy of dye degradation and bactericidal behavior of SnO2. The high recombination rate of SnO2 can be decreased upon doping with two-dimensional materials (MoS2 nanosheets) and Bi metal. These binary dopants-based SnO2 showed a significant role in methylene blue (MB) dye degradation in various pH media and antimicrobial potential as more active sites are provided by nanostructured MoS2 and Bi3+ is responsible for producing a variety of different oxygen vacancies within SnO2. The prepared QDs were described via morphology, optical characteristics, elemental composition, functional group, phase formation, crystallinity, and d-spacing. In contrast, antimicrobial activity was checked at high and low dosages against Escherichia coli (E. coli) and the inhibition zone was calculated utilizing a Vernier caliper. Furthermore, prepared samples have expressed substantial antimicrobial effects against E. coli. To further explore the interactions between the MB and Bi/MoS2–SnO2 composite, we modeled and calculated the MB adsorption using density functional theory and the Heyd–Scuseria–Ernzerhof hybrid (HSE06) approach. There is a relatively strong interaction between the MB molecule and Bi/MoS2–SnO2 composite. In the present study, different concentrations (1 and 3%) of Bi were incorporated into a fixed amount of molybdenum disulfide and SnO2 quantum dots by co-precipitation technique. This research aimed to increase the efficacy of dye degradation and bactericidal behavior of SnO2.![]()
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Affiliation(s)
- Ayesha Habib
- Solar Cell Applications Research Lab, Department of Physics, Government College University LahoreLahore54000PunjabPakistan
| | - Muhammad Ikram
- Solar Cell Applications Research Lab, Department of Physics, Government College University LahoreLahore54000PunjabPakistan
| | - Ali Haider
- Department of Clinical Sciences, Faculty of Veterinary and Animal Sciences, Muhammad Nawaz Shareef University of Agriculture (MNSUA) Multan66000Pakistan
| | - Anwar Ul-Hamid
- Core Research Facilities, Research Institute, King Fahd University of Petroleum & MineralsDhahran31261Saudi Arabia
| | - Iram Shahzadi
- Faculty of Pharmacy, The University of Lahore54000Pakistan
| | - Junaid Haider
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of SciencesTianjin 300308China
| | - Mohammed Benali Kanoun
- Department of Mathematics and Sciences, College of Humanities and Sciences, Prince Sultan UniversityP.O. Box 66833Riyadh 11586Saudi Arabia
| | - Souraya Goumri-Said
- Physics Department, College of Science and General Studies, Alfaisal UniversityP.O. Box 50927Riyadh 11533Saudi Arabia
| | - Walid Nabgan
- Departament d’Enginyeria Química, Universitat Rovira i VirgiliAv Països Catalans 2643007TarragonaSpain
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7
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Hernández-Del Castillo PC, Oliva J, Rodriguez-Gonzalez V. An eco-friendly and sustainable support of agave-fibers functionalized with graphene/TiO2:SnO2 for the photocatalytic degradation of the 2,4-D herbicide from the drinking water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115514. [PMID: 35751295 DOI: 10.1016/j.jenvman.2022.115514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 05/24/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
In this research, we evaluated the photocatalytic performance of biodegradable composites for the removal of the 2,4-Dichlorophenoxyacetic acid (2,4-D) herbicide. The composite was composed by agave fibers (AgF), graphene-microplates (GM) and titanium dioxide TiO2/SnO2 (TSn) nanoparticles (NPs) and was named TSn + AgF/GM. Both, the TSn NPs and the GM were deposited on the AgF using the Dip-coating method. According to the analysis by X-Ray Diffraction (XRD), the crystalline phase for the TiO2 and SnO2 was anatase and tetragonal-rutile, respectively. The Scanning Electron Microscopy (SEM) images demonstrated that the AgF were completely saturated by the GM (which had average dimensions of 15 μm × 22 μm) and by conglomerations of TSn NPs with average size of 642 nm. The TSn NPs and the TSn + AgF/GM composite were evaluated for the photocatalytic degradation of the 2,4-D herbicide under ultraviolet-visible (UV-Vis) light and found a maximum degradation of 98.4 and 93.7% (after 4 h) for the TSn NPs and the TSn + AgF/GM composite, respectively. Reuse cycles were also performed and the degradation percentage decreased by 13.1% and by 7.8% (after 3 cycles of reuse) when the TSn NPs and the TSn + AgF/GM composite are employed, respectively. Scavenger experiments were also carried out and found that the oxidizing agents are mainly produced in the order of: •OH>•O2- > h+; then, the main oxidizing agents generated during the photocatalytic reaction were the hydroxyl radicals. Thus, the photocatalytic system studied in this work for the degradation of 2,4-D could pave the way for the development of new eco-friendly/floatable photocatalysts, which can be applied in wastewater-treatment plants.
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Affiliation(s)
- P C Hernández-Del Castillo
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - J Oliva
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico.
| | - V Rodriguez-Gonzalez
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico.
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8
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Vanlalhmingmawia C, Lalhriatpuia C, Tiwari D, Kim DJ. Noble metal-doped TiO 2 thin films in the efficient removal of Mordant Orange-1: insights of degradation process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:51732-51743. [PMID: 35247174 DOI: 10.1007/s11356-021-17568-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
Nanocomposite Ag0(NPs)/TiO2 is synthesised in a facile template method enabling nanoparticles of reduced Ag evenly distributed within the titania network. The morphological studies of nanocomposites were extensively performed employing SEM/EDX (scanning electron microscopy/energy dispersive X-ray), TEM (transmission electron microscopy) and AFM (atomic force microscopy). Moreover, the bandgap energies of materials were obtained using the diffuse reflectance spectrometer (DRS). The newer insights in the photocatalytic elimination of Mordant Orange-1 (MO1) was obtained using the nanocomposite thin film for various parametric studies utilising the UV-A and LED illuminations. The kinetics of degradation of MO1 was performed, and the rate constant was favoured at lower concentrations of MO1. Moreover, the elimination efficiency of MO1 was favoured with a decrease in solution pH. The NPOC results inferred that a fairly good extent of MO1 was mineralised using a thin-film catalyst for both the UV-A and LED illuminations. The minimal effect of several co-ions demonstrated the applicability of thin films in the elimination of MO1, and the stability of the thin film has shown the potential applicability of thin-film catalysts. Further, the mechanism of photocatalytic degradation was demonstrated with the radical scavenger studies and ascertained the reaction pathways.
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Affiliation(s)
| | - Chhakchhuak Lalhriatpuia
- Department of Chemistry, Pachhunga University College, Mizoram University, Aizawl, 796001, India
| | - Diwakar Tiwari
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl, 796004, India.
| | - Dong-Jin Kim
- Department of Environment Science and Biotechnology, Hallym University, Chuncheon, 24252, Republic of Korea
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9
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Titanium and Silicon Dioxide-Coated Fabrics for Management and Tuning of Infrared Radiation. SENSORS 2022; 22:s22103918. [PMID: 35632326 PMCID: PMC9143692 DOI: 10.3390/s22103918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 02/05/2023]
Abstract
Far infrared radiation (FIR) is emitted by every body at a given temperature, including the human body. FIR ranging between 4–14 μm is considered useful for cell growth, and the human body emits a maximum of infrared (IR) radiation at the wavelength of approximately 9.3 µm. In the present study, fabrics based on five different raw textiles having the same yarn count as well as the same weaving patterns were designed and created. Some of them were subjected to a coating process. The fabrics to be tested were as follows: coated with TiO2 nanoparticles, coated with SiO2 nanoparticles, coated fabric that does not contain bioceramic nanoparticle (BNFC), and non-coated fabrics (NCF). The structural characterization of the resulting samples was performed using scanning electron microscopy (SEM), abrasion tests, and air permeability. Following the structural characterization, the infrared emissivity properties were investigated using infrared thermography as well as attenuated total reflectance Fourier-transform infrared spectroscopy in the 8–14 IR range. According to the experimental findings, the fabrics coated with TiO2 and SiO2 displayed increased infrared emissivity values compared to the uncoated ones. In addition, it was observed that the use of bioceramic powders had no effect on air permeability and abrasion properties.
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10
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The Influence of Synthesis Methods and Experimental Conditions on the Photocatalytic Properties of SnO2: A Review. Catalysts 2022. [DOI: 10.3390/catal12040428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Semiconductors based on transition metal oxides represent an important class of materials used in emerging technologies. For this, the performance of these materials strongly depends on the size and morphology of particles, surface charge characteristics, and the presence of bulk and surface defects that are influenced by the synthesis method and the experimental conditions the materials are prepared. In this context, the present review aims to report the importance of choosing the synthesis methods and experimental conditions to modify structural, morphological, and electronic characteristics of semiconductors, more specifically, tin oxide (SnO2), since these parameters may be a determinant for better performance in various applications, including photocatalysis. SnO2 is an n-type semiconductor with a band gap between 3.6 and 4.0 eV, whose intrinsic characteristics are responsible for its electrical conductivity, good optical characteristics, high thermal stability, and other qualities. Such characteristics have provided excellent results in advanced oxidative processes, i.e., heterogeneous photocatalysis applications. This process involves semiconductors in the production of hydroxyl radicals via activation by light absorption, and it is considered as an emerging and promising technology for domestic-industrial wastewater treatment. In our review article, we focused on the photodegradation of different organic dyes and types of persistent organic pollutants using SnO2-based photocatalysts, and how the efficiency of these materials can be impacted by synthesis methods and experimental conditions employed to prepare them.
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11
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Rajput RB, Jamble SN, Kale RB. A review on TiO 2/SnO 2 heterostructures as a photocatalyst for the degradation of dyes and organic pollutants. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 307:114533. [PMID: 35121365 DOI: 10.1016/j.jenvman.2022.114533] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Industrialization, civilization and human activities have all grown steadily in recent years. As a result, small and large industries discharge many organic pollutants into the environment and contribute to environmental pollution. These compounds are quite stable and challenging to break down over time, posing a long-term risk. The heterogeneous advanced oxidation processes technology has gained tremendous attention. It depends on the light-induced formation of e-/h+ pairs, which combine with water and aqueous oxygen to generate highly reactive hydroxyl radicals that degrade the organic pollutants in a solution and convert them ultimately into non-toxic products. In this paper, the synergetic impact of TiO2-SnO2 coupling with other semiconductor materials and their photodegradation performance on toxic contaminants in an aqueous medium has been reviewed. In addition, multiple approaches for the synthesis of TiO2-SnO2 photocatalysts have been discussed. Among them, hydrothermal, sol-gel, electrospinning, precipitation and even their combination are extensively used to synthesize various forms of nanostructures. These techniques demonstrate better tunability for visible absorption, suppression of e-/h+ pair recombination and enhanced e-/h+ separation to improve photocatalytic performance. This paper also summarises the role of different operating factors such as catalyst loading, pH, pollutants variation concentration, various light sources and oxidizing agents on the photodegradation of organic pollutants.
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Affiliation(s)
- Rekha B Rajput
- Department of Physics, The Institute of Science, Madam Cama Road, Mumbai, India.
| | - Shweta N Jamble
- Department of Physics, The Institute of Science, Madam Cama Road, Mumbai, India
| | - Rohidas B Kale
- Department of Physics, The Institute of Science, Madam Cama Road, Mumbai, India.
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12
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Lalliansanga, Tiwari D, Tiwari A, Shukla A, Shim MJ, Lee SM. Facile synthesis and characterization of Ag(NP)/TiO2 nanocomposite: Photocatalytic efficiency of catalyst for oxidative removal of Alizarin Yellow. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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13
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Zhao L, Li G, Li F, Yao M. Enhanced visible light photoactivity of TiO2/SnO2 films by tridoping with Y/F/Ag ions. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2021.02.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Synergistic Excited State Involved Catalytic Reduction of (NH3-trz)[Fe(dipic)2] Complex by SnO2/TiO2 Nanocomposite. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02304-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Bhat SA, Sher F, Hameed M, Bashir O, Kumar R, Vo DVN, Ahmad P, Lima EC. Sustainable nanotechnology based wastewater treatment strategies: achievements, challenges and future perspectives. CHEMOSPHERE 2022; 288:132606. [PMID: 34678350 DOI: 10.1016/j.chemosphere.2021.132606] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 09/27/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
Nanotechnology is being an emerging science for wastewater treatment requires more research emphasis and depth knowledge. For wastewater treatment, different forms of nanomaterials are used based on the type of contaminants and treatment efficiency desired. With the development in the field of nanomaterials, novel and emerging nanomaterials are coming into existence. The nanomaterials used for wastewater treatment can be carbon, single-walled carbon nanotubes, multiple walled carbon nanotubes, covalent organic frameworks, metal and metal oxide- based nanoparticles. Graphene based nanoparticles, their oxides (GO) and reduced graphene oxide (rGO) find tremendous applicability to be used in wastewater treatment purposes. Due to the introduction of graphene oxide nanoparticles in the adsorbent materials, their adsorption capacities have get enhanced and such materials have also improved the mechanical stability of the adsorbent. Ferric oxide shows greater adsorption capacities for organic pollutants. Furthermore, magnetic nano-powder confers a low adsorption capacity for phenols. Pyrrolidone reduced graphene oxide (PVP-RGO) nanoparticles have been used as adsorbents for the elimination of inorganic target contaminant copper, with great adsorption (1698 mg/g). The present study comprehensively reviews nanotechnology as a wastewater treatment strategy besides enlightening its safety issues and efficiency. The novelty of this article is that it highlights the overview of recent applications of various types of nanomaterials and research works releated to it. Such an approach will be helpful to get insights into technological advances, applications and future challenges of nanotechnology implementation for wastewater treatment.
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Affiliation(s)
- Shakeel Ahmad Bhat
- College of Agricultural Engineering, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar Srinagar,India
| | - Farooq Sher
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS, United Kingdom.
| | - Mariam Hameed
- School of Chemistry, University of the Punjab, Lahore, 54590, Pakistan; International Society of Engineering Science and Technology, United Kingdom
| | - Omar Bashir
- Department of Food Technology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir,Shalimar Srinagar,India
| | - Rohitashw Kumar
- College of Agricultural Engineering, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shalimar Srinagar,India
| | - Dai-Viet N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam
| | - Parvaiz Ahmad
- Botany and Microbiology Department, College of Science, King Saud University, P. O. Box. 2460, Riyadh, 11451, Saudi Arabia
| | - Eder C Lima
- Institute of Chemistry, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Goncalves 9500, P.O. Box 15003, ZIP, 91501-970, Porto Alegre, RS, Brazil
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Wu M, Lu L, Yang Y, Chang Y, Chen R, Li Y, Du J, Tao C, Liu Z, Liu Y, Gou L, Pan S, Ran D, Li J. A triethanolamine-assisted fabrication of stable Sb doped-SnO2/Ti electrode for electrocatalytic oxidation of rhodamine B. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kumari MLA, Devi LG, Maia G, Chen TW, Al-Zaqri N, Ali MA. Mechanochemical synthesis of ternary heterojunctions TiO 2(A)/TiO 2(R)/ZnO and TiO 2(A)/TiO 2(R)/SnO 2 for effective charge separation in semiconductor photocatalysis: A comparative study. ENVIRONMENTAL RESEARCH 2022; 203:111841. [PMID: 34380049 DOI: 10.1016/j.envres.2021.111841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/01/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
TiO2, ZnO, and SnO2 metal oxides were synthesized by the sol-gel method and heterojunctions were fabricated by combining TiO2 with either ZnO or SnO2 in a 1:1 ratio using mechanochemical ball milling process. The ball milling process promotes phase transition of TiO2 from anatase to rutile and yields ternary heterojunction of the type TiO2(A)/TiO2(R)/ZnO and TiO2(A)/TiO2(R)/SnO2 (A-anatase and R-rutile). These ternary heterojunctions were characterized by various analytical techniques and its photocatalytic efficiency is evaluated using 4-Chloro Phenol as a model compound under UV and solar light. The enhanced catalytic activity of TiO2(A)/TiO2(R)/ZnO heterojunction is attributed to the formation of Ti3+-Vo defect states which leads to the efficient charge carrier separation. During the ball milling process severe crystal deformation takes place in TiO2 and ZnO lattices by creating crystal lattice distortion which leads to the formation of defects due to valency mismatch between Ti4+ and Zn2+. A mechanistic pathway is proposed for the enhanced photocatalytic activity of the ternary heterojunctions.
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Affiliation(s)
- M L Aruna Kumari
- Department of Post Graduate Studies in Chemistry, Bangalore University, Bengaluru, 560001, India; Department of Chemistry, M. S. Ramaiah College of Arts, Science, and Commerce, Bengaluru, 560054, India.
| | - L Gomathi Devi
- Department of Post Graduate Studies in Chemistry, Bangalore University, Bengaluru, 560001, India
| | - Gilberto Maia
- Institute of Chemistry, Universidade Federal de Mato Grosso do Sul, Av. Senador Filinto Muller, 1555, Campo Grande, MS, 79074-460, Brazil
| | - Tse-Wei Chen
- Department of Materials, Imperial College London, London, SW7 2AZ, United Kingdom
| | - Nabil Al-Zaqri
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - M Ajmal Ali
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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Wang N, Pan Y. High efficient synthesis of extremely fine nano-SnO2 photocatalytic materials by dealloying Cu50Sn50 alloy powders with mainly exposed {123} facts in η-Cu6Sn5. CrystEngComm 2022. [DOI: 10.1039/d2ce00469k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Extremely fine nano-SnO2 photocatalysts were successfully synthesized by dealloying method using high corrosion activity Cu50Sn50 alloy powders as precursor materials. The results show that the dealloying cycles for Cu50Sn50 precursors...
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Fatimah I, Purwiandono G, Citradewi PW, Sagadevan S, Oh WC, Doong RA. Influencing Factors in the Synthesis of Photoactive Nanocomposites of ZnO/SiO 2-Porous Heterostructures from Montmorillonite and the Study for Methyl Violet Photodegradation. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3427. [PMID: 34947775 PMCID: PMC8708840 DOI: 10.3390/nano11123427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 12/05/2022]
Abstract
In this work, photoactive nanocomposites of ZnO/SiO2 porous heterostructures (PCHs) were prepared from montmorillonite clay. The effects of preparation methods and Zn content on the physicochemical features and photocatalytic properties were investigated. Briefly, a comparison of the use of hydrothermal and microwave-assisted methods was done. The Zn content was varied between 5 and 15 wt% and the characteristics of the nanomaterials were also examined. The physical and chemical properties of the materials were characterized using X-ray diffraction, diffuse-reflectance UV-Vis, X-ray photoelectron spectroscopy, and gas sorption analyses. The morphology of the synthesized materials was characterized through scanning electron microscopy and transmission electron microscopy. The photocatalytic performance of the prepared materials was quantified through the photocatalytic degradation of methyl violet (MV) under irradiation with UV and visible light. It was found that PCHs exhibit greatly improved physicochemical characteristics as photocatalysts, resulting in boosting photocatalytic activity for the degradation of MV. It was found that varied synthesis methods and Zn content strongly affected the specific surface area, pore distribution, and band gap energy of PCHs. In addition, the band gap energy was found to govern the photoactivity. Additionally, the surface parameters of the PCHs were found to contribute to the degradation mechanism. It was found that the prepared PCHs demonstrated excellent photocatalytic activity and reusability, as seen in the high degradation efficiency attained at high concentrations. No significant changes in activity were seen until five cycles of photodegradation were done.
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Affiliation(s)
- Is Fatimah
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Sleman, Yogyakarta 55584, Indonesia; (G.P.); (P.W.C.)
| | - Gani Purwiandono
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Sleman, Yogyakarta 55584, Indonesia; (G.P.); (P.W.C.)
| | - Putwi Widya Citradewi
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Islam Indonesia, Kampus Terpadu UII, Jl. Kaliurang Km 14, Sleman, Yogyakarta 55584, Indonesia; (G.P.); (P.W.C.)
| | - Suresh Sagadevan
- Nanotechnology & Catalysis Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia;
| | - Won-Chun Oh
- Department of Advanced Materials Science and Engineering, Hanseo University, Seosan-si 356-706, Chungnam, Korea
| | - Ruey-an Doong
- Institute of Analytical and Environmental Sciences, National Tsing Hua University, 101, Sec. 2, Kuang Fu Road, Hsinchu 30013, Taiwan;
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Ismail GA, Allam NG, El-Gemizy WM, Salem MAS. Potential role of Spirulina (Arthrospira) platensis biomass for removal of TiO2NPs -MG hybrid nanocomposite produced after wastewater treatment by TiO2 nanoparticles. AN ACAD BRAS CIENC 2021; 93:e20201669. [PMID: 34730741 DOI: 10.1590/0001-3765202120201669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 01/21/2021] [Indexed: 11/21/2022] Open
Abstract
Biosynthesis of titanium dioxide nanoparticles (TiO2NPs) by Sphingomonas paucimobilis B34 bacteria was successfully achieved and followed by UV-Vis spectroscopy. The nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and fourier transform infrared spectroscopy (FTIR) techniques. The biosynthesized TiO2NPs were spherical in shape with an average particle size of 15.6 nm. These TiO2NPs were used as nono-catalyst for removing of malachite green (MG) dye (at 103 mol/L) from wastewater solution. As indicated by the results, the biosynthesized TiO2NPs represented a capable approach for MG removal with up to 83 % efficiency. The removal process was found to follow a pseudo-first-order kinetics. Furthermore, the developed TiO2NPs-MG hybrid nanocomposite was efficiently removed from the medium by using Spirulina platensis cyanobacterial biomass after wastewater treatment. S. platensis biomass was able to remove up to 89.43 % of the hybrid nanocomposite by a biosorption process. The resultant water effluent, after TiO2NPs-MG removal, showed no toxicity towards Vigna radiate L. seedlings implying its safety for agriculture purposes. According to the obtained results, S. platensis living biomass could play a dual re-cycling role, as natural biosorbent for removing both nanoparticles and dye (TiO2NPs-MG hybrid nano-composite) from solution after wastewater treatment for healthier environmental management.
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Affiliation(s)
- Gehan Ahmed Ismail
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Nanis Gamal Allam
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
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21
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Abd-Rabboh HSM, Galal AH, Aziz RA, Ahmed MA. A novel BiVO 3/SnO 2 step S-scheme nano-heterojunction for an enhanced visible light photocatalytic degradation of amaranth dye and hydrogen production. RSC Adv 2021; 11:29507-29518. [PMID: 35479533 PMCID: PMC9040752 DOI: 10.1039/d1ra04717e] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 07/26/2021] [Indexed: 11/21/2022] Open
Abstract
The destruction of toxic pollutants and production of hydrogen gas on the surface of semiconductors under light irradiation is the main significance of photocatalysis. Heterojunctions with matching in band gap energy are urgently required for enhancing the redox power of the charge carriers. A step S-scheme BiVO3/SnO2 nano-heterojunction was carefully synthesized for a successful photodegradation of amaranth dye and photocatalytic hydrogen evolution. Tetragonal SnO2 nanoparticles of 80 m2 g-1 surface area and distinct mesoporous structure were fabricated by a sol-gel route in the presence of Tween-80 as the pore structure directing agent. BiVO3 nanoparticles were deposited homogeneously on the SnO2 surface in an ultrasonic bath of power intensity 300 W. The photocatalytic efficiency in the destruction of amaranth dye soar with increasing BiVO3 contents of up to 10 wt%. The hydrogen evolution rate reached 8.2 mmol g-1 h-1, which is eight times stronger than that of pristine SnO2. The sonicated nanocomposites were investigated by XRD, BET, FESEM, HRTEM, EDS, DRS and PL techniques. The step S-scheme heterojunction with superior oxidative and reductive power is the primary key for the exceptional photocatalytic process. The PL of terephthalic acid and the scavenger trapping experiments reveal the charge migration through the step S-scheme mechanism rather than the type (II) heterojunction mechanism.
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Affiliation(s)
- Hisham S M Abd-Rabboh
- Chemistry Department, Faculty of Science, King Khalid University PO Box 9004 Abha 61413 Saudi Arabia.,Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
| | - A H Galal
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568.,Chemical Engineering Department, The British University in Egypt Egypt
| | - Rafi Abdel Aziz
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
| | - M A Ahmed
- Department of Chemistry, Faculty of Science, Ain Shams University Abbassia Cairo 11566 Egypt +20 224831836 +20 103979568
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Keerthana SP, Yuvakkumar R, Ravi G, Manimegalai M, Pannipara M, Al-Sehemi AG, Gopal RA, Hanafiah MM, Velauthapillai D. Investigation on (Zn) doping and anionic surfactant (SDS) effect on SnO 2 nanostructures for enhanced photocatalytic RhB dye degradation. ENVIRONMENTAL RESEARCH 2021; 199:111312. [PMID: 34019891 DOI: 10.1016/j.envres.2021.111312] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/04/2021] [Accepted: 05/06/2021] [Indexed: 06/12/2023]
Abstract
Herein we reported the effect of doping and addition of surfactant on SnO2 nanostructures for enhanced photocatalytic activity. Pristine SnO2, Zn-SnO2 and SDS-(Zn-SnO2) was prepared via simple co-precipitation method and the product was annealed at 600 °C to obtain a clear phase. The structural, optical, vibrational, morphological characteristics of the synthesized SnO2, Zn-SnO2 and SDS-(Zn-SnO2) product were investigated. SnO2, Zn-SnO2 and SDS-(Zn-SnO2) possess crystallite size of 20 nm, 19 nm and 18 nm correspondingly with tetragonal structure and high purity. The metal oxygen vibrations were present in FT-IR spectra. The obtained bandgap energies of SnO2, Zn-SnO2 and SDS-(Zn-SnO2) were 3.58 eV, 3.51 eV and 2.81 eV due to the effect of dopant and surfactant. This narrowing of bandgap helped in the photocatalytic activity. The morphology of the pristine sample showed poor growth of nanostructures with high level of agglomeration which was effectively reduced for other two samples. Product photocatalytic action was tested beneath visible light of 300 W. SDS-(Zn-SnO2) nanostructure efficiency showed 90% degradation of RhB dye which is 2.5 times higher than pristine sample. Narrow bandgap, crystallite size, better growth of nanostructures paved the way for SDS-(Zn-SnO2) to degrade the toxic pollutant. The superior performance and individuality of SDS-(Zn-SnO2) will makes it a potential competitor on reducing toxic pollutants from wastewater in future research.
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Affiliation(s)
- S P Keerthana
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India
| | - R Yuvakkumar
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
| | - G Ravi
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
| | - M Manimegalai
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India
| | | | | | - Ramu Adam Gopal
- School of Materials Science and Engineering, Hongik University, 2639, Sejong-ro, Jochiwon-eup Sejong City, 30016, South Korea
| | - Marlia M Hanafiah
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi UKM, Selangor, Malaysia; Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, 43600, Bangi UKM, Selangor, Malaysia
| | - Dhayalan Velauthapillai
- Faculty of Engineering and Science, Western Norway University of Applied Sciences, Bergen, 5063, Norway.
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Abstract
The aim of this work was to immobilize reduced graphene oxide (RGO) and titanium dioxide (TiO2) on the surface of selected fibrous structures. Textile fabrics made of cotton (CO) and polyamide (PA) were used as a carrier. The following modification methods were applied: coating for modification of PA and dip-coating for modification of CO. In the dip-coating method, no auxiliaries were used, which is a huge advantage. The RGO/TiO2 coated fabrics were characterized using several techniques: ultraviolet–visible (UV–VIS) spectroscopy, scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The obtained results showed the immobilization of RGO and TiO2 on the fabrics. Raw fabrics absorb much less radiation than coated ones, which is associated with strong absorption of radiation by applied modifiers (RGO and TiO2). Photocatalytic activity of functionalized textiles was determined using aqueous phenol solutions. Phenol removal efficiency obtained for RGO/TiO2 coated CO and RGO/TiO2 coated PA was 51% and 46%, respectively. The hydroxyl radicals play a major role in the phenol photocatalytic degradation. The phenol removal efficiency in the fifth cycle was higher (about 14% and 8% for RGO/TiO2 coated CO and RGO/TiO2 coated PA, respectively) compared to the first cycle.
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Ayyakannu Sundaram G, Maniarsu S, P. Vijendar R, Veerappan G, Karthikeyan V, Nomura K, Wang J. Hierarchical Sn and AgCl co-doped TiO2 microspheres as electron transport layer for enhanced perovskite solar cell performance. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo). Catalysts 2020. [DOI: 10.3390/catal10050491] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
In this work, a new metal-to-metal charge transfer (MMCT) heterogeneous catalyst (Nb–O–Mo) was synthesized by a chemical grafting method under an inert atmosphere. The activity of the covalently anchored oxo-bridged Nb–O–Mo catalyst was estimated for decolorization of Rh B, congo red, and crystal violet dyes in an aqueous solution under fluorescent light. The catalyst was characterized via X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometer, Fourier-transform infrared, and FT-Raman. The catalytic decolorization was evaluated from the UV spectra of dyes in aqueous solution by changing different factors, including dye concentration, temperature, and catalyst loading. Decolorization percentages were 83%–89%, 86%–95%, 97%–99% for Rh B, Congo Red and Crystal Violet in 1 min at 298 K, showing the best performance among other catalysts. Decolorization efficiency for 50 ppm of Rh B was improved from 92% to 98%, with a temperature increase to 318 K.
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TiO2–SnO2 Nanocomposites: Effect of Acid–Base and Structural-Adsorption Properties on Photocatalytic Performance. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01467-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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A SnO 2/CeO 2 Nano-Composite Catalyst for Alizarin Dye Removal from Aqueous Solutions. NANOMATERIALS 2020; 10:nano10020254. [PMID: 32024060 PMCID: PMC7075236 DOI: 10.3390/nano10020254] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 01/25/2020] [Accepted: 01/27/2020] [Indexed: 12/22/2022]
Abstract
A new SnO2/CeO2 nano-composite catalyst was synthesized, characterized and used for the removal of alizarin dyes from aqueous solutions. The composite material was prepared using a precipitation method. X-ray powder diffractometry (XRD), high resolution transmission electron microscopy (HR-TEM), Brunauer–Emmett–Teller methodology (BET) and Fourier Transform Infrared Spectrometry (ATR-FTIR) were utilized for the characterization of the prepared composite. The prepared nano-composite revealed high affinity for the adsorption and decomposition of alizarin dyes. The adsorption capacity under different experimental conditions (adsorbate concentration, contact time, adsorbent dose and pH) was examined. Under optimized experimental conditions, the removal of alizarin yellow, alizarin red and alizarin-3-methylimino-diacetic acid dyes from aqueous solutions was about 96.4%,87.8% and 97.3%, respectively. The adsorption isotherms agreed with the models of Langmuir, Freundlich and Temkin isotherms.
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A novel UV and visible light driven photocatalyst AgIO4/ZnO nanoparticles with highly enhanced photocatalytic performance for removal of rhodamine B and indigo carmine dyes. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112245] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Effect of organic capping agents on the optical and photocatalytic activity of mesoporous TiO2 nanoparticles by sol–gel method. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0424-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Fe-doped SnO2 decorated reduced graphene oxide nanocomposite with enhanced visible light photocatalytic activity. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Hassan SM, Ahmed AI, Mannaa MA. Structural, photocatalytic, biological and catalytic properties of SnO2/TiO2 nanoparticles. CERAMICS INTERNATIONAL 2018; 44:6201-6211. [DOI: 10.1016/j.ceramint.2018.01.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
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Mishra A, Butola BS. Development of Cotton Fabrics with Durable UV Protective and Self-cleaning Property by Deposition of Low TiO2
Levels through Sol-gel Process. Photochem Photobiol 2018; 94:503-511. [DOI: 10.1111/php.12888] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 12/11/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Anu Mishra
- Department of Textile Technology; Indian Institute of Technology; Delhi India
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de Assis GC, Skovroinski E, Leite VD, Rodrigues MO, Galembeck A, Alves MCF, Eastoe J, de Oliveira RJ. Conversion of "Waste Plastic" into Photocatalytic Nanofoams for Environmental Remediation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8077-8085. [PMID: 29462559 DOI: 10.1021/acsami.7b19834] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Plastic debris is a major environmental concern, and to find effective ways to reuse polystyrene (PS) presents major challenges. Here, it is demonstrated that polystyrene foams impregnated with SnO2 are easily generated from plastic debris and can be applied to photocatalytic degradation of dyes. SnO2 nanoparticles were synthesized by a polymeric precursor method, yielding specific surface areas of 15 m2/g after heat treatment to 700 °C. Crystallinity, size, and shape of the SnO2 particles were assessed by X-ray diffraction (XRD) and transmission electron microscopy (TEM), demonstrating the preparation of crystalline spherical nanoparticles with sizes around 20 nm. When incorporated into PS foams, which were generated using a thermally induced phase separation (TIPS) process, the specific surface area increased to 48 m2/g. These PS/SnO2 nanofoams showed very good efficiency for photodegradation of rhodamine B, under UV irradiation, achieving up to 98.2% removal. In addition the PS/SnO2 nanofoams are shown to retain photocatalytic activity for up to five reuse cycles.
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Affiliation(s)
- Geovania C de Assis
- Departamento de Química , Universidade Estadual da Paraíba , Campina Grande 58429-500 , Brazil
| | - Euzébio Skovroinski
- Programa de Pós-Graduação em Ciência de Materiais , Universidade Federal de Pernambuco , Recife 50740-540 , Brazil
| | - Valderi D Leite
- Departamento de Química , Universidade Estadual da Paraíba , Campina Grande 58429-500 , Brazil
| | - Marcelo O Rodrigues
- Instituto de Química , Universidade de Brasília , Brasília 70297-400 , Brazil
| | - André Galembeck
- Departamento de Química Fundamental , Universidade Federal de Pernambuco , Recife 50740-540 , Brazil
- Centro de Tecnologias Estratégicas do Nordeste , Ministério da Ciência, Tecnologia, Inovações e Comunicações , Recife 50740-545 , Brazil
| | - Mary C F Alves
- Departamento de Química , Universidade Estadual da Paraíba , Campina Grande 58429-500 , Brazil
| | - Julian Eastoe
- School of Chemistry , University of Bristol , Bristol BS8 1TS , U.K
| | - Rodrigo J de Oliveira
- Departamento de Química , Universidade Estadual da Paraíba , Campina Grande 58429-500 , Brazil
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Faraji M, Mohaghegh N, Abedini A. Ternary composite of TiO2 nanotubes/Ti plates modified by g-C3N4 and SnO2 with enhanced photocatalytic activity for enhancing antibacterial and photocatalytic activity. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 178:124-132. [DOI: 10.1016/j.jphotobiol.2017.11.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 10/17/2017] [Accepted: 11/05/2017] [Indexed: 11/28/2022]
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35
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Farhadi A, Mohammadi M, Ghorbani M. On the assessment of photocatalytic activity and charge carrier mechanism of TiO 2 @SnO 2 core-shell nanoparticles for water decontamination. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.02.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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36
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Epifani M, Kaciulis S, Mezzi A, Altamura D, Giannini C, Díaz R, Force C, Genç A, Arbiol J, Siciliano P, Comini E, Concina I. Inorganic Photocatalytic Enhancement: Activated RhB Photodegradation by Surface Modification of SnO 2 Nanocrystals with V 2O 5-like species. Sci Rep 2017; 7:44763. [PMID: 28300185 PMCID: PMC5353695 DOI: 10.1038/srep44763] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/13/2017] [Indexed: 11/09/2022] Open
Abstract
SnO2 nanocrystals were prepared by precipitation in dodecylamine at 100 °C, then they were reacted with vanadium chloromethoxide in oleic acid at 250 °C. The resulting materials were heat-treated at various temperatures up to 650 °C for thermal stabilization, chemical purification and for studying the overall structural transformations. From the crossed use of various characterization techniques, it emerged that the as-prepared materials were constituted by cassiterite SnO2 nanocrystals with a surface modified by isolated V(IV) oxide species. After heat-treatment at 400 °C, the SnO2 nanocrystals were wrapped by layers composed of vanadium oxide (IV-V mixed oxidation state) and carbon residuals. After heating at 500 °C, only SnO2 cassiterite nanocrystals were obtained, with a mean size of 2.8 nm and wrapped by only V2O5-like species. The samples heat-treated at 500 °C were tested as RhB photodegradation catalysts. At 10-7 M concentration, all RhB was degraded within 1 h of reaction, at a much faster rate than all pure SnO2 materials reported until now.
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Affiliation(s)
- Mauro Epifani
- Istituto per la Microelettronica e i Microsistemi, IMM-CNR, Via Monteroni, 73100 Lecce, Italy
| | - Saulius Kaciulis
- Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR, PO Box 10, 00015 Monterotondo Stazione, Roma, Italy
| | - Alessio Mezzi
- Istituto per lo Studio dei Materiali Nanostrutturati, ISMN-CNR, PO Box 10, 00015 Monterotondo Stazione, Roma, Italy
| | - Davide Altamura
- Istituto di Cristallografia, IC-CNR, Via Giovanni Amendola, 122/O, 70126 Bari, Italy
| | - Cinzia Giannini
- Istituto di Cristallografia, IC-CNR, Via Giovanni Amendola, 122/O, 70126 Bari, Italy
| | - Raül Díaz
- Electrochemical Processes Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra, 3 28935 Móstoles, Spain
| | - Carmen Force
- NMR Unit, Centro de Apoyo Tecnológico, Universidad Rey Juan Carlos, c/Tulipán, s/n, 28933 Móstoles, Spain
| | - Aziz Genç
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain.,ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Catalonia, Spain
| | - Pietro Siciliano
- Istituto per la Microelettronica e i Microsistemi, IMM-CNR, Via Monteroni, 73100 Lecce, Italy
| | - Elisabetta Comini
- Department of Information Engineering, Brescia University, Via Valotti 9, 25133 Brescia, Italy.,CNR-INO SENSOR Lab, Via Branze 45, 25123 Brescia, Italy
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Abdel Messih M, Ahmed M, Soltan A, Anis SS. Facile approach for homogeneous dispersion of metallic silver nanoparticles on the surface of mesoporous titania for photocatalytic degradation of methylene blue and indigo carmine dyes. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.11.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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38
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Saeed M, Siddique M, Usman M, ul Haq A, Khan SG, Raoof HA. Synthesis and Characterization of Zinc Oxide and Evaluation of its Catalytic Activities for Oxidative Degradation of Rhodamine B Dye in Aqueous Medium. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/zpch-2016-0921] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
We herein report the synthesis of zinc oxide and evaluation of its catalytic performance for degradation of Rhodamine B dye in aqueous medium. Sodium hydroxide and zinc acetate dihydrate were used as precursor materials for synthesis of zinc oxide catalyst. X-ray difractometry, Fourier transform infer red spectroscopy, scanning electron microscopy, thermogravimetric and surface area analyses were used as characterization techniques. Catalytic performance of prepared zinc oxide was evaluated for degradation of Rhodamine B dye in aqueous medium. Catalytic degradation of dye was taking place according to Eley-Rideal mechanism which states that oxygen adsorbed at the surface of ZnO reacts with dye in fluid phase. During the reaction, reactive radicals are formed as a result of electron-hole pair formation between conduction and valence band of zinc oxide catalyst which degrade the dye into water and carbon dioxide.
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Affiliation(s)
- Muhammad Saeed
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
| | - Mohsin Siddique
- Department of Chemistry , Bacha Khan University Charsadda , Pakistan
| | - Muhammad Usman
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
| | - Atta ul Haq
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
| | - Samreen Gul Khan
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
| | - Hafiz Abdur Raoof
- Department of Chemistry , Government College University Faisalabad , Allama Iqbal Road Faisalabad , Pakistan
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39
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Effect of structural defects towards the performance of TiO2/SnO2/WO3 photocatalyst in the degradation of 1,2-dichlorobenzene. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.03.044] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Lee HI, Lee YY, Kang DU, Lee K, Kwon YU, Kim JM. Self-arrangement of nanoparticles toward crystalline metal oxides with high surface areas and tunable 3D mesopores. Sci Rep 2016; 6:21496. [PMID: 26893025 PMCID: PMC4759599 DOI: 10.1038/srep21496] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 01/26/2016] [Indexed: 11/10/2022] Open
Abstract
We demonstrate a new design concept where the interaction between silica nanoparticles (about 1.5 nm in diameter) with titania nanoparticles (anatase, about 4 nm or 6 nm in diameter) guides a successful formation of mesoporous titania with crystalline walls and controllable porosity. At an appropriate solution pH (~1.5, depending on the deprotonation tendencies of two types of nanoparticles), the smaller silica nanoparticles, which attach to the surface of the larger titania nanoparticles and provide a portion of inactive surface and reactive surface of titania nanoparticles, dictate the direction and the degree of condensation of the titania nanoparticles, resulting in a porous 3D framework. Further crystallization by a hydrothermal treatment and subsequent removal of silica nanoparticles result in a mesoporous titania with highly crystalline walls and tunable mesopore sizes. A simple control of the Si/Ti ratio verified the versatility of the present method through the successful control of mean pore diameter in the range of 2–35 nm and specific surface area in the ranges of 180–250 m2 g−1. The present synthesis method is successfully extended to other metal oxides, their mixed oxides and analogues with different particle sizes, regarding as a general method for mesoporous metal (or mixed metal) oxides.
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Affiliation(s)
- Hyung Ik Lee
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Yoon Yun Lee
- SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, 440-746 Korea
| | - Dong-Uk Kang
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Kirim Lee
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Young-Uk Kwon
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.,SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, 440-746 Korea
| | - Ji Man Kim
- Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.,SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, 440-746 Korea
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41
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Srinivasan NR, Bandyopadhyaya R. SnxTi1−xO2 solid-solution-nanoparticle embedded mesoporous silica (SBA-15) hybrid as an engineered photocatalyst with enhanced activity. Faraday Discuss 2016; 186:353-70. [DOI: 10.1039/c5fd00126a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Synthesis of hybrids of a porous host-material (with well-dispersed embedded nanoparticles inside the pore), wherein each nanoparticle has precisely controlled properties (size and composition) poses a generic challenge. To this end, a new strategy is proposed to form SnxTi1−xO2 solid-solution-nanoparticles inside the pores of sphere-like mesoporous silica (SBA-15), with different percentages of Sn in the nanoparticle (varying from 5 to 50 at%), for enhanced photocatalysis. X-ray diffraction confirms the formation of solid-solution nanoparticles in the porous silica hybrid, while the location of nanoparticles and elemental composition are identified using electron microscopy. The hybrid with 5 at% of Sn (Sn0.05Ti0.95O2-sphere-like SBA-15) shows the maximum photocatalytic activity for degradation of rhodamine-B dye (first order rate constant for degradation, k = 1.86 h−1), compared to both pure TiO2-sphere-like SBA-15 (k = 1.38 h−1) or pure SnO2-sphere-like SBA-15 (k = 0.14 h−1) or other hybrids in this series. XPS and PL spectra suggest the formation of more oxygen vacancies during the replacement of Ti4+ with Sn4+. Electrochemical studies reveal that there is a reduction of charge transfer resistance from 910 kΩ cm−2 for TiO2-sphere-like SBA-15, to 332 kΩ cm−2 for Sn0.05Ti0.95O2-sphere-like SBA-15. These results imply that the enhancement in photocatalytic performance is as a result of delay in recombination of charge carriers. Therefore, the approach followed in the present work to form solid-solution nanoparticles inside a porous host without causing pore blockage, would be a promising route towards increasing reaction rates in catalytic applications of hybrid materials.
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Affiliation(s)
- N. R. Srinivasan
- Department of Chemical Engineering
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Rajdip Bandyopadhyaya
- Department of Chemical Engineering
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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42
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Joshi S, Ippolito SJ, Sunkara MV. Convenient architectures of Cu2O/SnO2 type II p–n heterojunctions and their application in visible light catalytic degradation of rhodamine B. RSC Adv 2016. [DOI: 10.1039/c6ra07150c] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Enhanced photocatalytic performance of a coupled p-type Cu2O/n-type SnO2 nanocomposite primarily attributed to the hierarchical architecture and heterojunction formation.
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Affiliation(s)
- Shravanti Joshi
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)
- School of Science
- College of Science
- Engineering & Health
- RMIT University
| | - Samuel J. Ippolito
- Centre for Advanced Materials and Industrial Chemistry (CAMIC)
- School of Science
- College of Science
- Engineering & Health
- RMIT University
| | - Manorama V. Sunkara
- RMIT-IICT Research Centre
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
- Nanomaterials Laboratory
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43
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Ganeshraja AS, Thirumurugan S, Rajkumar K, Zhu K, Wang Y, Anbalagan K, Wang J. Effects of structural, optical and ferromagnetic states on the photocatalytic activities of Sn–TiO2 nanocrystals. RSC Adv 2016. [DOI: 10.1039/c5ra25609g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ferromagnetic Sn–TiO2 nanocrystals were newly developed, and their photocatalytic activity showed structural, luminescent and magnetic dependences.
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Affiliation(s)
| | | | - Kanniah Rajkumar
- Department of Chemistry
- Pondicherry University
- Pondicherry 605014
- India
| | - Kaixin Zhu
- Mössbauer Effect Data Center
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Yanjie Wang
- Mössbauer Effect Data Center
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | | | - Junhu Wang
- Mössbauer Effect Data Center
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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44
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Cheng L, Kang Y. Bi5O7I/Bi2O3 composite photocatalyst with enhanced visible light photocatalytic activity. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.09.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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45
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Wang Q, Fang Y, Meng H, Wu W, Chu G, Zou H, Cheng D, Chen J. Enhanced simulated sunlight induced photocatalytic activity by pomegranate-like S doped SnO2@TiO2 spheres. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.06.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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46
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Chen X, Liu F, Liu B, Tian L, Hu W, Xia Q. A novel route to graphite-like carbon supporting SnO2 with high electron transfer and photocatalytic activity. JOURNAL OF HAZARDOUS MATERIALS 2015; 287:126-32. [PMID: 25638039 DOI: 10.1016/j.jhazmat.2015.01.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/31/2014] [Accepted: 01/13/2015] [Indexed: 06/04/2023]
Abstract
Mesoporous graphite-like carbon supporting SnO2 (carbon-SnO2) nanocomposites were prepared by a modified solvothermal method combined with a post-calcination at 500°C under a nitrogen atmosphere. The polyvinylpyrrolidone not only promotes the nucleation and crystallization, but also provides the carbon source in the process. The results of scanning electron microscopy and transmission electron microscopy show a uniform distribution of SnO2 nanoparticles on the graphite- like carbon surface. Raman and X-ray photoelectron spectra indicate the presence of strong C-Sn interaction between SnO2 and graphite-like carbon. Photoelectrochemical measurements confirm that the effective separation of electron-hole pairs on the carbon-SnO2 nanocomposite leads to a high photocatalytic activity on the degradation of Rhodamine B and glyphosate under simulated sunlight irradiation. The nanocomposite materials show a potential application in dealing with the environmental and industrial contaminants under sunlight irradiation.
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Affiliation(s)
- Xianjie Chen
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Hubei University, Wuhan 430062, PR China; Ministry of Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, PR China
| | - Fenglin Liu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Hubei University, Wuhan 430062, PR China; Ministry of Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, PR China
| | - Bing Liu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Hubei University, Wuhan 430062, PR China; Ministry of Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, PR China
| | - Lihong Tian
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Hubei University, Wuhan 430062, PR China; Ministry of Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, PR China.
| | - Wei Hu
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Hubei University, Wuhan 430062, PR China; Ministry of Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, PR China
| | - Qinghua Xia
- Hubei Collaborative Innovation Center for Advanced Organochemical Materials, Hubei University, Wuhan 430062, PR China; Ministry of Education Key Laboratory for the Synthesis and Applications of Organic Functional Molecules, Hubei University, Wuhan 430062, PR China
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Abou-Gamra ZM, Ahmed MA. TiO<sub>2</sub> Nanoparticles for Removal of Malachite Green Dye from Waste Water. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/aces.2015.53039] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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48
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Wang J, Wang X, Dong X, Zhang X, Ma H, Fei X. Multilayered TiO2@SnO2hollow nanostructures: facile synthesis and enhanced photocatalytic performance. RSC Adv 2014. [DOI: 10.1039/c4ra12103a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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49
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Lu W, Guo L, Jia Y, Guo Y, Li Z, Lin J, Huang J, Wang W. Significant enhancement in photocatalytic activity of high quality SiC/graphene core–shell heterojunction with optimal structural parameters. RSC Adv 2014. [DOI: 10.1039/c4ra06026a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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50
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Das M, Bhattacharyya KG. Oxidation of Rhodamine B in aqueous medium in ambient conditions with raw and acid-activated MnO2, NiO, ZnO as catalysts. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.04.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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