1
|
Malik U, Mazur M, Gudi RD, Mandaliya DD, Selvakannan PR, Bhargava SK. Colloidal carbon soot templated TiO 2/Ag surface functionalized 3D printed metal brushes as new generation surface enhanced Raman scattering substrates. J Colloid Interface Sci 2024; 671:325-335. [PMID: 38815369 DOI: 10.1016/j.jcis.2024.05.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/14/2024] [Accepted: 05/23/2024] [Indexed: 06/01/2024]
Abstract
This present work demonstrated the functional transformation of 3D printed metal substrates into a new family of Surface-enhanced Raman Scattering substrates, a promising approach in developing SERS-based Point-of-care (PoC) analytical platforms. l-Powder Bed Fusion (l-PBF, Additive manufacturing or 3D printing technique) printed metal substrates have rough surfaces, and exhibit high thermal stability and intrinsic chemical inertness, necessitating a suitable surface functionalization approach. This present work demonstrated a unique multi-stage approach to transform l-PBF printed metal structures as recyclable SERS substrates by colloidal carbon templating, chemical vapor deposition, and electroless plating methods sequentially. The surface of the printed metal structures was functionalized using the colloidal carbon soot particles, that were formed by the eucalyptus oil flame deposition method. These carbon particles were shown to interact with the metals present in the printed structures by forming metal carbides and function as an adlayer on the surface. Subsequent deposition of TiO2 onto these templates led to strong grafting of TiO2 and retaining the fractal structure of the soot template onto the metal surface. Electroless deposition of silver nanoparticles resulted in the formation of fractally structured TiO2/Ag nanostructures and these functionalized printed metal structures were shown as excellent SERS substrates in enhancing the vibrational spectral features of Rhodamine B (RhB). The presence of TiO2 photocatalyst on the surface was shown to remove the RhB analyte from the surface under photochemical conditions, which enables the regeneration of SERS activity, and the substrate can be recycled. The migration of metals from the printed metal structures into the fractally ordered TiO2/Ag nanostructures was found to enhance the photocatalytic activity and increase the recyclability of these substrates. This study demonstrates the potential of 3D-printed Inconel metal substrates as next-generation recyclable SERS platforms, offering a substantial advancement over traditional colloidal, thin-film, flexible, and hard SERS substrates.
Collapse
Affiliation(s)
- Uzma Malik
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne 3001, Victoria, Australia
| | - Maciej Mazur
- Centre for Additive Manufacturing, School of Engineering, RMIT University, 3001, Victoria, Australia
| | - Ravindra D Gudi
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Dharmendra D Mandaliya
- Department of Chemical Engineering, L.D. College of Engineering, Ahmedabad 380015, India
| | - P R Selvakannan
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne 3001, Victoria, Australia.
| | - Suresh K Bhargava
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne 3001, Victoria, Australia.
| |
Collapse
|
2
|
Napruszewska BD, Walczyk A, Duraczyńska D, Kryściak-Czerwenka J, Karcz R, Gaweł A, Nowak P, Serwicka EM. TiO 2 Nanoparticles with Adjustable Phase Composition Prepared by an Inverse Microemulsion Method: Physicochemical Characterization and Photocatalytic Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1130. [PMID: 38998735 PMCID: PMC11243671 DOI: 10.3390/nano14131130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2024] [Revised: 06/26/2024] [Accepted: 06/29/2024] [Indexed: 07/14/2024]
Abstract
Titania nanoparticles (NPs) find wide application in photocatalysis, photovoltaics, gas sensing, lithium batteries, etc. One of the most important synthetic challenges is maintaining control over the polymorph composition of the prepared nanomaterial. In the present work, TiO2 NPs corresponding to anatase, rutile, or an anatase/rutile/brookite mixture were obtained at 80 °C by an inverse microemulsion method in a ternary system of water/cetyltrimethylammonium bromide/1-hexanol in a weight ratio of 17:28:55. The only synthesis variables were the preparation of the aqueous component and the nature of the Ti precursor (Ti(IV) ethoxide, isopropoxide, butoxide, or chloride). The materials were characterized with X-ray diffraction, scanning/transmission electron microscopy, N2 adsorption-desorption isotherms, FTIR and Raman vibrational spectroscopies, and diffuse reflectance spectroscopy. The synthesis products differed significantly not only in phase composition, but also in crystallinity, textural properties, and adsorption properties towards water. All TiO2 NPs were active in the photocatalytic decomposition of rhodamine B, a model dye pollutant of wastewater streams. The mixed-phase anatase/rutile/brookite nanopowders obtained from alkoxy precursors showed the best photocatalytic performance, comparable to or better than the P25 reference. The exceptionally high photoactivity was attributed to the advantageous electronic effects known to accompany multiphase titania composition, namely high specific surface area and strong surface hydration. Among the single-phase materials, anatase samples showed better photoactivity than rutile ones, and this effect was associated, primarily, with the much higher specific surface area of anatase photocatalysts.
Collapse
Affiliation(s)
- Bogna D Napruszewska
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Anna Walczyk
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
- Faculty of Chemistry, Jagiellonian University Krakow, Gronostajowa 2, 30-387 Krakow, Poland
| | - Dorota Duraczyńska
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Joanna Kryściak-Czerwenka
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Robert Karcz
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Adam Gaweł
- Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Paweł Nowak
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| | - Ewa M Serwicka
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland
| |
Collapse
|
3
|
Bachvarova-Nedelcheva A, Iordanova R, Kaneva N. The Solvent Role for the Decomposition of Paracetamol in Distilled and Drinking Water by Pure and Ag-Modified TiO 2 Sol-Gel Powders. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1791. [PMID: 38673148 PMCID: PMC11051041 DOI: 10.3390/ma17081791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/10/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024]
Abstract
In this study, pure TiO2 gels were synthesized by applying the sol-gel method, using Ti(IV) butoxide with the addition of two different solvents, namely ethylene glycol (EG) and isopropanol (isop), with only air moisture present. It was established using XRD that the gel prepared with the addition of EG was amorphous even at 400 °C, while the other gel was amorphous up to 300 °C. It was found that TiO2 (anatase) had a dominant crystalline phase during heating to 600 °C, while at 700 °C, TiO2 (rutile) appeared. The as-obtained powdered materials were annealed at 500 °C and subsequently underwent photocatalytic tests with paracetamol. Additionally, the TiO2 samples were modified with Ag+ co-catalysts (10-2 M), using photofixation by UV illumination. The photocatalytic activity of the Ag-modified powders was also tested in the photodegradation of a commonly used paracetamol in aqueous solution under UV light illumination. The obtained data exhibited that the annealed samples had better photocatalytic efficiency and decomposed paracetamol faster in comparison to the non-annealed sol-gel powders. The highest degradation efficiency was observed for the TBT/isop/Ag material, with degradation efficiencies average values of 65.59% and 75.61% paracetamol achieved after the third cycle of photocatalytic treatment. The co-catalytically modified powders had higher photocatalytic efficiency in comparison to the pure nanosized powders. Moreover, the sol-gel powders of TBT/EG, TBT/EG/Ag (10-2 M), TBT/isop, and TBT/isop/Ag (10-2 M) demonstrated the ability to retain their photocatalytic activity even after three cycles of use, suggesting that they could find practical use in the treatment of pharmaceutical wastewater. The observed photocatalytic efficiency and positive impact of silver make the prepared powders a desirable choice for pharmaceutical drug degradation, helping to promote environmentally friendly and effective wastewater treatment technology.
Collapse
Affiliation(s)
- Albena Bachvarova-Nedelcheva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bld. 11, 1113 Sofia, Bulgaria;
| | - Reni Iordanova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bld. 11, 1113 Sofia, Bulgaria;
| | - Nina Kaneva
- Laboratory of Nanoparticle Science and Technology, Department of General and Inorganic Chemistry, Faculty of Chemistry and Pharmacy, University of Sofia, 1 James Bourchier Blvd., 1164 Sofia, Bulgaria;
| |
Collapse
|
4
|
Thakur N, Thakur N, Kumar A, Thakur VK, Kalia S, Arya V, Kumar A, Kumar S, Kyzas GZ. A critical review on the recent trends of photocatalytic, antibacterial, antioxidant and nanohybrid applications of anatase and rutile TiO2 nanoparticles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169815. [PMID: 38184262 DOI: 10.1016/j.scitotenv.2023.169815] [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: 11/03/2023] [Revised: 12/22/2023] [Accepted: 12/29/2023] [Indexed: 01/08/2024]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) have become a focal point of research due to their widespread daily use and diverse synthesis methods, including physical, chemical, and environmentally sustainable approaches. These nanoparticles possess unique attributes such as size, shape, and surface functionality, making them particularly intriguing for applications in the biomedical field. The continuous exploration of TiO2 NPs is driven by the quest to enhance their multifunctionality, aiming to create next-generation products with superior performance. Recent research efforts have specifically focused on understanding the anatase and rutile phases of TiO2 NPs and evaluating their potential in various domains, including photocatalytic processes, antibacterial properties, antioxidant effects, and nanohybrid applications. The hypothesis guiding this research is that by exploring different synthesis methods, particularly chemical and environmentally friendly approaches, and incorporating doping and co-doping techniques, the properties of TiO2 NPs can be significantly improved for diverse applications. The study employs a comprehensive approach, investigating the effects of nanoparticle size, shape, dose, and exposure time on performance. The synthesis methods considered encompass both conventional chemical processes and environmentally friendly alternatives, with a focus on how doping and co-doping can enhance the properties of TiO2 NPs. The research unveils valuable insights into the distinct phases of TiO2 NPs and their potential across various applications. It sheds light on the improved properties achieved through doping and co-doping, showcasing advancements in photocatalytic processes, antibacterial efficacy, antioxidant capabilities, and nanohybrid applications. The study concludes by emphasizing regulatory aspects and offering suggestions for product enhancement. It provides recommendations for the reliable application of TiO2 NPs, addressing a comprehensive spectrum of critical aspects in TiO2 NP research and application. Overall, this research contributes to the evolving landscape of TiO2 NP utilization, offering valuable insights for the development of innovative and high-performance products.
Collapse
Affiliation(s)
- Naveen Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh 176041, India.
| | - Nikesh Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh 176041, India
| | - Anil Kumar
- School of chemical and metallurgical engineering, University of the Witwatersrand, Johannesburg, South Africa
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, SRUC, Kings Buildings West Mains Road, Edinburgh EH9 3JG, United Kingdom
| | - Susheel Kalia
- Department of Chemistry, ACC Wing (Academic Block) Indian Military Academy, Dehradun, Uttarakhand 248007, India
| | - Vedpriya Arya
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, Uttarakhand 249405, India
| | - Ashwani Kumar
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, Uttarakhand 249405, India
| | - Sunil Kumar
- Department of Animal Sciences, Central University of Himachal Pradesh, Kangra, Shahpur, Himachal Pradesh 176206, India
| | - George Z Kyzas
- Hephaestus Laboratory, Department of Chemistry, School of Science, International Hellenic University, Kavala, Greece.
| |
Collapse
|
5
|
Kuk-Dzul L, Jiménez LF, Vega-Azamar RE, Gurrola MP, Cruz JC, Trejo-Arroyo DL. Photocatalytic Activity and Self-Cleaning Effect of Coating Mortars with TiO 2 Added: Practical Cases in Warm Sub-Humid Climates. MATERIALS (BASEL, SWITZERLAND) 2023; 17:190. [PMID: 38204042 PMCID: PMC10779537 DOI: 10.3390/ma17010190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 10/30/2023] [Accepted: 11/02/2023] [Indexed: 01/12/2024]
Abstract
In this study, the photocatalytic activity of coating mortars with synthetized and commercial TiO2 nanoparticles added has been evaluated at 2, 3 and 5% by weight of cement by calculating the degradation efficiency of methyl orange and red wine dyes exposed to both visible-light and UV radiation; also, the self-cleaning effect of coatings exposed to weather conditions (warm sub-humid climate) was assessed. TiO2 nanoparticles were synthesized via the sol-gel method to a low synthesis temperature and characterized via X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The results show synthesized TiO2 particles in anatase phase with a crystallite size of 14.69 nm, and hemispherical particles with sizes of submicron order. The addition percentage with the best performance in the coating mortars was 3%, with both commercial and synthesized TiO2; however, coating mortars with synthesized TiO2 exhibited the highest degradation efficiency for both dyes when they were exposed to visible light, while mortars with commercial TiO2 exhibited the highest degradation efficiency when exposed to UV radiation. In addition, in coating mortars with synthesized TiO2, the self-cleaning effect was evident from the beginning of exposure to weather, reaching the largest dye-free surface at the end of exposure. The compressive strength increased significantly in mortars with TiO2 addition.
Collapse
Affiliation(s)
- Liliana Kuk-Dzul
- Tecnológico Nacional de México/I.T. de Chetumal, Av. Insurgentes 330, Chetumal 77013, Mexico; (L.K.-D.); (L.F.J.); (R.E.V.-A.)
| | - Luis F. Jiménez
- Tecnológico Nacional de México/I.T. de Chetumal, Av. Insurgentes 330, Chetumal 77013, Mexico; (L.K.-D.); (L.F.J.); (R.E.V.-A.)
| | - Ricardo E. Vega-Azamar
- Tecnológico Nacional de México/I.T. de Chetumal, Av. Insurgentes 330, Chetumal 77013, Mexico; (L.K.-D.); (L.F.J.); (R.E.V.-A.)
| | - Mayra P. Gurrola
- IxM-CONAHCYT-Tecnológico Nacional de México/I.T. de Chetumal, Av. Insurgentes 330, Chetumal 77013, Mexico;
| | - Julio C. Cruz
- Tecnológico Nacional de México/I.T. de Chetumal, Av. Insurgentes 330, Chetumal 77013, Mexico; (L.K.-D.); (L.F.J.); (R.E.V.-A.)
| | - Danna L. Trejo-Arroyo
- IxM-CONAHCYT-Tecnológico Nacional de México/I.T. de Chetumal, Av. Insurgentes 330, Chetumal 77013, Mexico;
| |
Collapse
|
6
|
Khorramifar A, Karami H, Lvova L, Kolouri A, Łazuka E, Piłat-Rożek M, Łagód G, Ramos J, Lozano J, Kaveh M, Darvishi Y. Environmental Engineering Applications of Electronic Nose Systems Based on MOX Gas Sensors. SENSORS (BASEL, SWITZERLAND) 2023; 23:5716. [PMID: 37420880 PMCID: PMC10300923 DOI: 10.3390/s23125716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 06/05/2023] [Accepted: 06/12/2023] [Indexed: 07/09/2023]
Abstract
Nowadays, the electronic nose (e-nose) has gained a huge amount of attention due to its ability to detect and differentiate mixtures of various gases and odors using a limited number of sensors. Its applications in the environmental fields include analysis of the parameters for environmental control, process control, and confirming the efficiency of the odor-control systems. The e-nose has been developed by mimicking the olfactory system of mammals. This paper investigates e-noses and their sensors for the detection of environmental contaminants. Among different types of gas chemical sensors, metal oxide semiconductor sensors (MOXs) can be used for the detection of volatile compounds in air at ppm and sub-ppm levels. In this regard, the advantages and disadvantages of MOX sensors and the solutions to solve the problems arising upon these sensors' applications are addressed, and the research works in the field of environmental contamination monitoring are overviewed. These studies have revealed the suitability of e-noses for most of the reported applications, especially when the tools were specifically developed for that application, e.g., in the facilities of water and wastewater management systems. As a general rule, the literature review discusses the aspects related to various applications as well as the development of effective solutions. However, the main limitation in the expansion of the use of e-noses as an environmental monitoring tool is their complexity and lack of specific standards, which can be corrected through appropriate data processing methods applications.
Collapse
Affiliation(s)
- Ali Khorramifar
- Department of Biosystems Engineering, University of Mohaghegh Ardabili, Ardabil 56199, Iran; (A.K.); (A.K.)
| | - Hamed Karami
- Department of Petroleum Engineering, Knowledge University, Erbil 44001, Iraq;
| | - Larisa Lvova
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Alireza Kolouri
- Department of Biosystems Engineering, University of Mohaghegh Ardabili, Ardabil 56199, Iran; (A.K.); (A.K.)
| | - Ewa Łazuka
- Department of Applied Mathematics, Faculty of Technology Fundamentals, Lublin University of Technology, 20-618 Lublin, Poland; (E.Ł.); (M.P.-R.)
| | - Magdalena Piłat-Rożek
- Department of Applied Mathematics, Faculty of Technology Fundamentals, Lublin University of Technology, 20-618 Lublin, Poland; (E.Ł.); (M.P.-R.)
| | - Grzegorz Łagód
- Department of Water Supply and Wastewater Disposal, Faculty of Environmental Engineering, Lublin University of Technology, 20-618 Lublin, Poland;
| | - Jose Ramos
- College of Computing and Engineering, Nova Southeastern University (NSU), 3301 College Avenue, Fort Lauderdale, FL 33314-7796, USA;
| | - Jesús Lozano
- Department of Electric Technology, Electronics and Automation, University of Extremadura, Avda. De Elvas S/n, 06006 Badajoz, Spain;
| | - Mohammad Kaveh
- Department of Petroleum Engineering, Knowledge University, Erbil 44001, Iraq;
| | - Yousef Darvishi
- Department of Biosystems Engineering, University of Tehran, Tehran P.O. Box 113654117, Iran;
| |
Collapse
|
7
|
Ahn J, Park S, Oh D, Lim Y, Nam JS, Kim J, Jung W, Kim ID. Rapid Joule Heating Synthesis of Oxide-Socketed High-Entropy Alloy Nanoparticles as CO 2 Conversion Catalysts. ACS NANO 2023. [PMID: 37229643 DOI: 10.1021/acsnano.3c00443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The unorthodox surface chemistry of high-entropy alloy nanoparticles (HEA-NPs), with numerous interelemental synergies, helps catalyze a variety of essential chemical processes, such as the conversion of CO2 to CO, as a sustainable path to environmental remediation. However, the risk of agglomeration and phase separation in HEA-NPs during high-temperature operations are lasting issues that impede their practical viability. Herein, we present HEA-NP catalysts that are tightly sunk in an oxide overlayer for promoting the catalytic conversion of CO2 with exceptional stability and performance. We demonstrated the controlled formation of conformal oxide overlayers on carbon nanofiber surfaces via a simple sol-gel method, which facilitated a large uptake of metal precursor ions and helped to decrease the reaction temperature required for nanoparticle formation. During the rapid thermal shock synthesis process, the oxide overlayer would also impede nanoparticle growth, resulting in uniformly distributed small HEA-NPs (2.37 ± 0.78 nm). Moreover, these HEA-NPs were firmly socketed in the reducible oxide overlayer, enabling an ultrastable catalytic performance involving >50% CO2 conversion with >97% selectivity to CO for >300 h without extensive agglomeration. Altogether, we establish the rational design principles for the thermal shock synthesis of high-entropy alloy nanoparticles and offer a helpful mechanistic perspective on how the oxide overlayer impacts the nanoparticle synthesis behavior, providing a general platform for the designed synthesis of ultrastable and high-performance catalysts that could be utilized for various industrially and environmentally relevant chemical processes.
Collapse
Affiliation(s)
- Jaewan Ahn
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Membrane Innovation Center for Anti-Virus & Air-Quality Control, KI Nanocentury, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Seyeon Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Membrane Innovation Center for Anti-Virus & Air-Quality Control, KI Nanocentury, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - DongHwan Oh
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yunsung Lim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jong Seok Nam
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Membrane Innovation Center for Anti-Virus & Air-Quality Control, KI Nanocentury, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jihan Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - WooChul Jung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Il-Doo Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Membrane Innovation Center for Anti-Virus & Air-Quality Control, KI Nanocentury, Korea Advanced Institute of Science and Technology (KAIST); 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| |
Collapse
|
8
|
Metanawin T, Panutumrong P, Metanawin S. Synthesis of Polyurethane/TiO
2
Hybrid with High Encapsulation Efficiency Using One‐Step Miniemulsion Polymerization for Methylene Blue Degradation and its Antibacterial Applications. ChemistrySelect 2023. [DOI: 10.1002/slct.202204522] [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]
Affiliation(s)
- Tanapak Metanawin
- Department of Materials and Production Technology Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand
| | - Praripatsaya Panutumrong
- Department of Materials and Production Technology Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand
| | - Siripan Metanawin
- Department of Textile Engineering Faculty of Engineering Rajamangala University of Technology Thanyaburi Pathum Thani 12120 Thailand
- Advanced Materials Design Development (AMDD) Research Unit Faculty of Engineering Rajamangala University of Technology Thanyaburi Pathum Thani 12110 Thailand
| |
Collapse
|
9
|
Gordeeva A, Thersleff T, Hsu YJ, Liebske C, Ulmer P, Andersson O, Häussermann U. Electronic structure characterization of TiO2-II with the α-PbO2 structure by electron-energy-loss-spectroscopy and comparison with anatase, brookite, and rutile. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
|
10
|
Kumari P, Saha R, Saikia G, Bhujel A, Choudhury MG, Jagdale P, Paul S. Synthesis of Mixed-Phase TiO 2-ZrO 2 Nanocomposite for Photocatalytic Wastewater Treatment. TOXICS 2023; 11:234. [PMID: 36976999 PMCID: PMC10051327 DOI: 10.3390/toxics11030234] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/20/2023] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
The use of TiO2 nanoparticles for photocatalysis for the degradation of organic dyes under UV light for wastewater treatment has been widely studied. However, the photocatalytic characteristics of TiO2 nanoparticles are inadequate due to their UV light response and higher band gap. In this work, three nanoparticles were synthesized: (i) TiO2 nanoparticle was synthesized by a sol-gel process. (ii) ZrO2 was prepared using a solution combustion process and (iii) mixed-phase TiO2-ZrO2 nanoparticles were synthesized by a sol-gel process to remove Eosin Yellow (EY) from aqueous solutions in the wastewater. XRD, FTIR, UV-VIS, TEM, and XPS analysis methods were used to examine the properties of the synthesized products. The XRD investigation supported the tetragonal and monoclinic crystal structures of the TiO2 and ZrO2 nanoparticles. TEM studies identified that mixed-phase TiO2-ZrO2 nanoparticles have the same tetragonal structure as pure mixed-phase. The degradation of Eosin Yellow (EY) was examined using TiO2, ZrO2, and mixed-phase TiO2-ZrO2 nanoparticles under visible light. The results confirmed that the mixed-phase TiO2-ZrO2nanoparticles show a higher level of photocatalytic activity, and the process is accomplished at a high degradation rate in lesser time and at a lower power intensity.
Collapse
Affiliation(s)
- Pooja Kumari
- Advanced Materials Research and Energy Application Laboratory (AMREAL), Department of Energy Engineering, North-Eastern Hill University, Shillong 793022, India
| | - Rajib Saha
- Advanced Materials Research and Energy Application Laboratory (AMREAL), Department of Energy Engineering, North-Eastern Hill University, Shillong 793022, India
| | - Gaurav Saikia
- Advanced Materials Research and Energy Application Laboratory (AMREAL), Department of Energy Engineering, North-Eastern Hill University, Shillong 793022, India
| | - Aditya Bhujel
- Advanced Materials Research and Energy Application Laboratory (AMREAL), Department of Energy Engineering, North-Eastern Hill University, Shillong 793022, India
| | - Mahua Gupta Choudhury
- Advanced Materials Research and Energy Application Laboratory (AMREAL), Department of Energy Engineering, North-Eastern Hill University, Shillong 793022, India
| | - Pravin Jagdale
- Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy
| | - Samrat Paul
- Advanced Materials Research and Energy Application Laboratory (AMREAL), Department of Energy Engineering, North-Eastern Hill University, Shillong 793022, India
| |
Collapse
|
11
|
Bharti DK, Verma R, Rani S, Agarwal D, Mehra S, Gangwar AK, Gupta BK, Singh N, Srivastava AK. Synthesis and Characterization of Highly Crystalline Bi-Functional Mn-Doped Zn 2SiO 4 Nanostructures by Low-Cost Sol-Gel Process. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:538. [PMID: 36770499 PMCID: PMC9921793 DOI: 10.3390/nano13030538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/28/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Herein, we demonstrate a process for the synthesis of a highly crystalline bi-functional manganese (Mn)-doped zinc silicate (Zn2SiO4) nanostructures using a low-cost sol-gel route followed by solid state reaction method. Structural and morphological characterizations of Mn-doped Zn2SiO4 with variable doping concentration of 0.03, 0.05, 0.1, 0.2, 0.5, 1.0, and 2.0 wt% were investigated by using X-ray diffraction and high-resolution transmission electron microscopy (HR-TEM) techniques. HR-TEM-assisted elemental mapping of the as-grown sample was conducted to confirm the presence of Mn in Zn2SiO4. Photoluminescence (PL) spectra indicated that the Mn-doped Zn2SiO4 nanostructures exhibited strong green emission at 521 nm under 259 nm excitation wavelengths. It was observed that PL intensity increased with the increase of Mn-doping concentration in Zn2SiO4 nanostructures, with no change in emission peak position. Furthermore, magnetism in doped Zn2SiO4 nanostructures was probed by static DC magnetization measurement. The observed photoluminescence and magnetic properties in Mn-doped Zn2SiO4 nanostructures are discussed in terms of structural defect/lattice strain caused by Mn doping and the Jahn-Teller effect. These bi-functional properties of as-synthesized Zn2SiO4 nanostructures provide a new platform for their potential applications towards magneto-optical and spintronic and devices areas.
Collapse
Affiliation(s)
- Dhiraj Kumar Bharti
- Nanoscale Research Facility, Indian Institute of Technology Delhi, New Delhi 110016, India
- CSIR—Advanced Materials and Processes Research Institute, Bhopal 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- CSIR—National Physical Laboratory, New Delhi 110012, India
| | - Rajni Verma
- School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Sonam Rani
- CSIR—National Physical Laboratory, New Delhi 110012, India
| | - Daksh Agarwal
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
- Lam Research Corporation, Fremont, CA 94538, USA
| | - Sonali Mehra
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- CSIR—National Physical Laboratory, New Delhi 110012, India
| | | | - Bipin Kumar Gupta
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- CSIR—National Physical Laboratory, New Delhi 110012, India
| | - Nidhi Singh
- CSIR—National Physical Laboratory, New Delhi 110012, India
| | - Avanish Kumar Srivastava
- CSIR—Advanced Materials and Processes Research Institute, Bhopal 462026, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- CSIR—National Physical Laboratory, New Delhi 110012, India
| |
Collapse
|
12
|
Composite CdS/TiO2 Powders for the Selective Reduction of 4-Nitrobenzaldehyde by Visible Light: Relation between Preparation, Morphology and Photocatalytic Activity. Catalysts 2022. [DOI: 10.3390/catal13010074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
A series of composite CdS/TiO2 powders was obtained by nucleation of TiO2 on CdS nanoseeds. This combination presents the appropriate band edge position for photocatalytic redox reactions: visible light irradiation of CdS allows the injection of electrons into dark TiO2, increasing the lifetimes of separated charges. The electrons have been used for the quantitative photoreduction of 4-nitrobenzaldehyde to 4-aminobenzaldehyde, whose formation was pointed out by 1H NMR and ESI-MS positive ion mode. Concomitant sacrificial oxidation of 2-propanol, which was also the proton source, occurred. The use of characterization techniques (XRD, N2 adsorption-desorption) evidenced the principal factors driving the photocatalytic reaction: the nanometric size of anatase crystalline domains, the presence of dispersed CdS to form an extended active junction CdS/anatase, and the presence of mesopores as nanoreactors. The result is an efficient photocatalytic system that uses visible light. In addition, the presence of TiO2 in combination with CdS improves the stability of the photoactive material, enabling its recyclability.
Collapse
|
13
|
Chai YD, Pang YL, Lim S, Chong WC, Lai CW, Abdullah AZ. Recent Progress on Tailoring the Biomass-Derived Cellulose Hybrid Composite Photocatalysts. Polymers (Basel) 2022; 14:polym14235244. [PMID: 36501638 PMCID: PMC9736154 DOI: 10.3390/polym14235244] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022] Open
Abstract
Biomass-derived cellulose hybrid composite materials are promising for application in the field of photocatalysis due to their excellent properties. The excellent properties between biomass-derived cellulose and photocatalyst materials was induced by biocompatibility and high hydrophilicity of the cellulose components. Biomass-derived cellulose exhibited huge amount of electron-rich hydroxyl group which could promote superior interaction with the photocatalyst. Hence, the original sources and types of cellulose, synthesizing methods, and fabrication cellulose composites together with applications are reviewed in this paper. Different types of biomasses such as biochar, activated carbon (AC), cellulose, chitosan, and chitin were discussed. Cellulose is categorized as plant cellulose, bacterial cellulose, algae cellulose, and tunicate cellulose. The extraction and purification steps of cellulose were explained in detail. Next, the common photocatalyst nanomaterials including titanium dioxide (TiO2), zinc oxide (ZnO), graphitic carbon nitride (g-C3N4), and graphene, were introduced based on their distinct structures, advantages, and limitations in water treatment applications. The synthesizing method of TiO2-based photocatalyst includes hydrothermal synthesis, sol-gel synthesis, and chemical vapor deposition synthesis. Different synthesizing methods contribute toward different TiO2 forms in terms of structural phases and surface morphology. The fabrication and performance of cellulose composite catalysts give readers a better understanding of the incorporation of cellulose in the development of sustainable and robust photocatalysts. The modifications including metal doping, non-metal doping, and metal-organic frameworks (MOFs) showed improvements on the degradation performance of cellulose composite catalysts. The information and evidence on the fabrication techniques of biomass-derived cellulose hybrid photocatalyst and its recent application in the field of water treatment were reviewed thoroughly in this review paper.
Collapse
Affiliation(s)
- Yi Ding Chai
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Yean Ling Pang
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Correspondence: or ; Tel.: +603-9086-0288; Fax: +603-9019-8868
| | - Steven Lim
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Woon Chan Chong
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Chin Wei Lai
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute for Advanced Studies, University of Malaya, Kuala Lumpur 50603, Malaysia
| | | |
Collapse
|
14
|
Castelló Lux K, Hot J, Fau P, Bertron A, Kahn ML, Ringot E, Fajerwerg K. Nano-gold decorated ZnO: an alternative photocatalyst promising for NOx degradation. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
15
|
Classification, Synthetic, and Characterization Approaches to Nanoparticles, and Their Applications in Various Fields of Nanotechnology: A Review. Catalysts 2022. [DOI: 10.3390/catal12111386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Nanoparticles typically have dimensions of less than 100 nm. Scientists around the world have recently become interested in nanotechnology because of its potential applications in a wide range of fields, including catalysis, gas sensing, renewable energy, electronics, medicine, diagnostics, medication delivery, cosmetics, the construction industry, and the food industry. The sizes and forms of nanoparticles (NPs) are the primary determinants of their properties. Nanoparticles’ unique characteristics may be explored for use in electronics (transistors, LEDs, reusable catalysts), energy (oil recovery), medicine (imaging, tumor detection, drug administration), and more. For the aforementioned applications, the synthesis of nanoparticles with an appropriate size, structure, monodispersity, and morphology is essential. New procedures have been developed in nanotechnology that are safe for the environment and can be used to reliably create nanoparticles and nanomaterials. This research aims to illustrate top-down and bottom-up strategies for nanomaterial production, and numerous characterization methodologies, nanoparticle features, and sector-specific applications of nanotechnology.
Collapse
|
16
|
Devi P, Verma R, Singh JP. Advancement in electrochemical, photocatalytic, and photoelectrochemical CO2 reduction: Recent progress in the role of oxygen vacancies in catalyst design. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
17
|
Niu X, Du Y, Liu J, Li J, Sun J, Guo Y. Facile Synthesis of TiO 2/MoS 2 Composites with Co-Exposed High-Energy Facets for Enhanced Photocatalytic Performance. MICROMACHINES 2022; 13:mi13111812. [PMID: 36363833 PMCID: PMC9696059 DOI: 10.3390/mi13111812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/14/2022] [Accepted: 10/21/2022] [Indexed: 06/05/2023]
Abstract
In this work, with the the H2TiO3 colloidal suspension and MoS2 as the precursors, TiO2/MoS2 composites composed of anatase TiO2 nanocrystals with co-exposed {101} and [111]-facets (nanorod and nanocuboid), {101} and {010} facets (nanospindle), and MoS2 microspheres constructed by layer-by-layer self-assembly of nanosheets were hydrothermally synthesized under different pH conditions. The characterization has been performed by combining X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high resolution TEM (HRTEM), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectra, and UV-visible absorption spectrum analyses. The photocatalytic degradation of rhodamine B (RhB) in an aqueous suspension was employed to evaluate the photocatalytic activity of the as-prepared pHx-TiO2/MoS2 composites. The photocatalytic degradation efficiency of pH3.5-TiO2/MoS2 composite was the highest (99.70%), which was 11.24, 2.98, 1.48, 1.21, 1.09, 1.03, 1.10, and 1.14 times that of Blank, MoS2, CM-TiO2, pH1.5-TiO2/MoS2, pH5.5-TiO2/MoS2, pH7.5-TiO2/MoS2, pH9.5-TiO2/MoS2, pH11.5-TiO2/MoS2, respectively. The pH3.5-TiO2/MoS2 composite exhibited the highest photocatalytic degradation rate, which may be attributed to the synergistic effects of its large specific surface area, suitable heterojunction structure, and favorable photogenerated charge-separation efficiency. This work is expect to provide primary insights into the photocatalytic effect of TiO2/MoS2 composite with co-exposed high-energy facets, and make a contribution to designing more efficient and stable photocatalysts.
Collapse
Affiliation(s)
- Xianjun Niu
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China
| | - Yien Du
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China
| | - Jian Liu
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China
| | - Jinxiao Li
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China
| | - Jiayi Sun
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China
| | - Yuwei Guo
- College of Chemistry, Baotou Teachers’ College, Baotou 014030, China
| |
Collapse
|
18
|
Zhu K, Zhu Q, Jiang M, Zhang Y, Shao Z, Geng Z, Wang X, Zeng H, Wu X, Zhang W, Huang K, Feng S. Modulating Ti
t
2g
Orbital Occupancy in a Cu/TiO
2
Composite for Selective Photocatalytic CO
2
Reduction to CO. Angew Chem Int Ed Engl 2022; 61:e202207600. [DOI: 10.1002/anie.202207600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Kainan Zhu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| | - Qian Zhu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| | - Mengpei Jiang
- Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences 72 Wenhua RD Shenyang 110016 China
| | - Yaowen Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| | - Zhiyu Shao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| | - Zhibin Geng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| | - Xiyang Wang
- Department of Mechanical and Mechatronics Engineering Waterloo Institute for Nanotechnology Materials Interface Foundry University of Waterloo Waterloo Ontario N2L3G1 Canada
| | - Hui Zeng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| | - Xiaofeng Wu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| | - Wei Zhang
- Electron Microscopy Center and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials Jilin University Changchun 130012 China
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| | - Shouhua Feng
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry Jilin Provincial International Cooperation Key Laboratory of Advanced Inorganic Solid Functional Materials College of Chemistry Jilin University Changchun 130012 China
| |
Collapse
|
19
|
Zhu K, Zhu Q, Jiang M, Zhang Y, Shao Z, Geng Z, Wang X, Zeng H, Wu X, Zhang W, Huang K, Feng S. Modulating Ti t2g Orbit‐occupancy in Cu/TiO2 Composite for Selective Photocatalytic CO2 Reduction to CO. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kainan Zhu
- Jilin University college of chemistry CHINA
| | - Qian Zhu
- Jilin University college of chemistry CHINA
| | - Mengpei Jiang
- Chinese Academy of Sciences Shenyang National Laboratory for Materials Science Institute of Metal Research CHINA
| | | | - Zhiyu Shao
- Jilin University College of Chemistry CHINA
| | | | - Xiyang Wang
- University of Waterloo Department of Mechanical and Mechatronics Engineering Waterloo Institute for Nanotechnology CANADA
| | - Hui Zeng
- Jilin University College of Chemistry CHINA
| | | | - Wei Zhang
- Jilin University Electron Microscopy Center and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials CHINA
| | - Keke Huang
- Jilin University College of Chemistry Qianjin Street 2699 130012 Changchun CHINA
| | | |
Collapse
|
20
|
Electrochemical cholesterol sensors based on nanostructured metal oxides: Current progress and future perspectives. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-022-02605-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
21
|
Makableh YF, Momani NF, Athamneh T, Al-Abed R, Alshorman I. Enhanced synergic effect of the antibacterial activity and hydrophobicity of polydimethylsiloxane polymer loaded with titanium dioxide nanoparticles and ciprofloxacin. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04226-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
22
|
Photocatalytic TiO2 nanomaterials as potential antimicrobial and antiviral agents: Scope against blocking the SARS-COV-2 spread. MICRO AND NANO ENGINEERING 2022. [PMCID: PMC8685168 DOI: 10.1016/j.mne.2021.100100] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The whole world is struggling with current coronavirus pandemic that shows urgent need to develop novel technologies, medical innovations or innovative materials for controlling SARS-CoV-2 infection. The mode of infection of SARS-CoV-2 is still not well known and seems to spread through surface, air, and water. Therefore, the whole surrounding environment needs to be disinfected with continuous function. For that purpose, materials with excellent antiviral properties, cost effective, environmental friendly and practically applicable should be researched. Titanium dioxide (TiO2) under ultraviolet light produces strong oxidative effect and is utilized as photocatalytic disinfectant in biomedical field. TiO2 based photocatalysts are effective antimicrobial/antiviral agents under ambient conditions with potential to be used even in indoor environment for inactivation of bacteria/viruses. Interestingly, recent studies highlight the effective disinfection of SARS-CoV-2 using TiO2 photocatalysts. Here, scope of TiO2 photocatalysts as emerging disinfectant against SARS-CoV-2 infection has been discussed in view of their excellent antibacterial and antiviral activities against various bacteria and viruses (e.g. H1N1, MNV, HSV, NDV, HCoV etc.). The current state of development of TiO2 based nano-photocatalysts as disinfectant shows their potential to combat with SARS-CoV-2 viral infection and are promising for any other such variants or viruses, bacteria in future studies.
Collapse
|
23
|
Influence of the Micro-Nanostructuring of Titanium Dioxide Films on the Photocatalytic Degradation of Formic Acid under UV Illumination. NANOMATERIALS 2022; 12:nano12061008. [PMID: 35335821 PMCID: PMC8953088 DOI: 10.3390/nano12061008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/08/2022] [Accepted: 03/15/2022] [Indexed: 12/04/2022]
Abstract
Surface micro-nanostructuring can provide new functionalities and properties to coatings. For example, it can improve the absorption efficiency, hydrophobicity and/or tribology properties. In this context, we studied the influence of micro-nanostructuring on the photocatalytic efficiency of sol-gel TiO2 coatings during formic acid degradation under UV illumination. The micro-nanostructuring was performed using the UV illumination of microspheres deposited on a photopatternable sol-gel layer, leading to a hexagonal arrangement of micropillars after development. The structures and coatings were characterized using Raman spectroscopy, ellipsometry, atomic force microscopy and scanning electron microscopy. When the sol-gel TiO2 films were unstructured and untreated at 500 °C, their effect on formic acid’s degradation under UV light was negligible. However, when the films were annealed at 500 °C, they crystallized in the anatase phase and affected the degradation of formic acid under UV light, also depending on the thickness of the layer. Finally, we demonstrated that surface micro-nanostructuring in the form of nanopillars can significantly increase the photocatalytic efficiency of a coating during the degradation of formic acid under UV light.
Collapse
|
24
|
Breuch R, Klein D, Moers C, Siefke E, Wickleder C, Kaul P. Development of Gold Nanoparticle-Based SERS Substrates on TiO2-Coating to Reduce the Coffee Ring Effect. NANOMATERIALS 2022; 12:nano12050860. [PMID: 35269348 PMCID: PMC8912524 DOI: 10.3390/nano12050860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 02/27/2022] [Accepted: 03/01/2022] [Indexed: 02/05/2023]
Abstract
Hydrophilic surface-enhanced Raman spectroscopy (SERS) substrates were prepared by a combination of TiO2-coatings of aluminium plates through a direct titanium tetraisopropoxide (TTIP) coating and drop coated by synthesised gold nanoparticles (AuNPs). Differences between the wettability of the untreated substrates, the slowly dried Ti(OH)4 substrates and calcinated as well as plasma treated TiO2 substrates were analysed by water contact angle (WCA) measurements. The hydrophilic behaviour of the developed substrates helped to improve the distribution of the AuNPs, which reflects in overall higher lateral SERS enhancement. Surface enhancement of the substrates was tested with target molecule rhodamine 6G (R6G) and a fibre-coupled 638 nm Raman spectrometer. Additionally, the morphology of the substrates was characterised using scanning electron microscopy (SEM) and Raman microscopy. The studies showed a reduced influence of the coffee ring effect on the particle distribution, resulting in a more broadly distributed edge region, which increased the spatial reproducibility of the measured SERS signal in the surface-enhanced Raman mapping measurements on mm scale.
Collapse
Affiliation(s)
- René Breuch
- Institute of Safety and Security Research, University of Applied Sciences Bonn-Rhein-Sieg, von-Liebig-Str. 20, 53359 Rheinbach, Germany; (D.K.); (C.M.); (E.S.)
- Correspondence: (R.B.); (P.K.)
| | - Daniel Klein
- Institute of Safety and Security Research, University of Applied Sciences Bonn-Rhein-Sieg, von-Liebig-Str. 20, 53359 Rheinbach, Germany; (D.K.); (C.M.); (E.S.)
| | - Cassandra Moers
- Institute of Safety and Security Research, University of Applied Sciences Bonn-Rhein-Sieg, von-Liebig-Str. 20, 53359 Rheinbach, Germany; (D.K.); (C.M.); (E.S.)
| | - Eleni Siefke
- Institute of Safety and Security Research, University of Applied Sciences Bonn-Rhein-Sieg, von-Liebig-Str. 20, 53359 Rheinbach, Germany; (D.K.); (C.M.); (E.S.)
| | - Claudia Wickleder
- Inorganic Chemistry, Department Chemie and Biologie, Cµ—Center for Micro- and Nanochemistry and (Bio)Technology, Faculty of Science and Technology, University of Siegen, Adolf-Reichwein-Str., 57068 Siegen, Germany;
| | - Peter Kaul
- Institute of Safety and Security Research, University of Applied Sciences Bonn-Rhein-Sieg, von-Liebig-Str. 20, 53359 Rheinbach, Germany; (D.K.); (C.M.); (E.S.)
- Correspondence: (R.B.); (P.K.)
| |
Collapse
|
25
|
Komárková B, Ecorchard P, Motlochová M, Slovák V, Vislocká X, Smržová D, Kormunda M, Bezdička P, Lušpai K, Šimunková M, Dvoranová D, Šrámová Slušná M, Belháčová L, Šubrt J. Effect of amines on the peroxo-titanates and photoactivity of annealed TiO2. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
26
|
Bahjat HH, Ismail RA, Sulaiman GM, Mohammed HA, Al-Omar M, Mohammed SAA, Khan RA. Preparation of Iron Oxide and Titania-Based Composite, Core-Shell Populated, Nanoparticulates Material by Two-Step LASER Ablation in Aqueous Media as Antimicrobial and Anticancer Agents. Bioinorg Chem Appl 2022; 2022:1854473. [PMID: 35116061 PMCID: PMC8807045 DOI: 10.1155/2022/1854473] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/15/2021] [Accepted: 09/17/2021] [Indexed: 12/12/2022] Open
Abstract
Iron oxide and titania-based composite nanoparticles (NPs) populated with core-shell structures, as part of the mixture of the monometallic NPs, were prepared in water medium by the two-fluence LASER ablation technique by applying 30 and 60 mJ/cm2 LASER energy irradiations. The prepared monometallics, composite, and core-shell NPs structures were confirmed from the XRD, TEM, and EDX analyses, followed by the FE-SEM and UV absorptions. Optically, the NPs exhibited an increase in the energy gap from 3.27 eV to 3.75 eV as LASER fluence increased from 30 mJ/cm2 to 60 mJ/cm2. The average NPs core size distributions for the core-shell material ranged at ∼70 nm with the shell thickness around 20 nm. The biggest NPs were of ∼170 nm size which were sparsely distributed. The magnetization behaviors of the NPs were also investigated using the vibrating sample magnetometer (VSM). The NPs showed antimicrobial activities against the pathogenic species: Escherichia coli and Staphylococcus aureus. The antimicrobial activities of the synthesized NPs, synthesized under the influence of magnetic fields, were found to be more potent than the NPs synthesized without the presence of any magnetic field. The NPs prepared under the influence of the magnetic fields also comparatively exhibited higher levels of cytotoxicity against lung cancer cell lines (A549) than the NPs prepared under no magnetic field's influence by the similar energy level effects of the LASER fluence. The flow cytometry analyses confirmed the NPs' cytotoxic impacts against the human lung cancer A549 cell lines through the initiation of apoptosis and promotion of the cell cycle arrest at the G1 phase of cell division. To further confirm the cytotoxic effects and the mechanism of the anticancer activity of the synthesized NPs against the A549 cell lines, several related parameters (cell viability, membrane permeability, nuclear intensity, and cytochrome-C release) were analyzed using the high-content screening (HCS) assay. The study suggested that the prepared NPs have potential as antimicrobial and also as anti-lung-cancer agents as tested in vitro. These NPs can also be part of combined chemotherapy in different oncological interventions, as well as a sonosensitizer in sonomagnetic heating-based therapy, especially for cancers.
Collapse
Affiliation(s)
- Hasan H. Bahjat
- Division of LASER Science and Technology, Department of Applied Sciences, University of Technology, Baghdad 10066, Iraq
| | - Raid A. Ismail
- Division of LASER Science and Technology, Department of Applied Sciences, University of Technology, Baghdad 10066, Iraq
| | - Ghassan M. Sulaiman
- Division of Biotechnology, Department of Applied Sciences, University of Technology, Baghdad 10066, Iraq
| | - Hamdoon A. Mohammed
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Qassim 51452, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo 11371, Egypt
| | - Mohsen Al-Omar
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Qassim 51452, Saudi Arabia
- Department of Pharmaceutical Chemistry and Pharmacognosy, College of Pharmacy, JUST, Irbid, Jordan
| | - Salman A. A. Mohammed
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Qassim 51452, Saudi Arabia
| | - Riaz A. Khan
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Qassim 51452, Saudi Arabia
| |
Collapse
|
27
|
Tahir R, Zahra SA, Naeem U, Akinwande D, Rizwan S. First observation on emergence of strong room-temperature ferroelectricity and multiferroicity in 2D-Ti 3C 2T x free-standing MXene film. RSC Adv 2022; 12:24571-24578. [PMID: 36128398 PMCID: PMC9426648 DOI: 10.1039/d2ra04428e] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/16/2022] [Indexed: 11/26/2022] Open
Abstract
Two-dimensional (2D) multiferroics are key candidate materials towards advancement of smart technology. Here, we employed a simple synthesis approach to address the long-awaited dream of developing ferroelectric and multiferroic 2D materials, especially in the new class of materials called MXenes. The etched Ti3C2Tx MXene was first synthesized after HF-treatment followed by a delamination process for successful synthesis of free-standing Ti3C2Tx film. The free-standing film was then exposed to air at room-temperature and heated at different temperatures to form a TiO2 layer derived from the Ti3C2Tx MXene itself. The ferroelectric measurement showed a clear polarization hysteresis loop at room-temperature. Also, due to the reported ferromagnetic behavior of Ti3C2Tx MXene, our composite could show multiferroic properties at room-temperature. The magnetoelectric coupling test was also performed that showed a clear, switchable spontaneous polarization under applied magnetic field. TiO2 is reported to be an incipient ferroelectric that assumes a ferroelectric phase in composite form. The structural and morphological analysis confirmed successful synthesis of free-standing film and the Raman spectroscopy revealed the formation of different phases of TiO2 and the observed ferroelectricity could be due to structural deformation as a result of the formation of this new phase. The measured value of remanent polarization is 0.5 μC cm−2. This is the first report on the existence of a ferroelectric phase and multiferroic coupling in 2D free-standing MXene film at room-temperature which opens-up the possibility of 2D material-based electric and magnetic data storage applications at room-temperature. Two-dimensional (2D) multiferroics are key candidate materials towards advancement of smart technology.![]()
Collapse
Affiliation(s)
- Rabia Tahir
- Physics Characterization and Simulations Lab (PCSL), Department of Physics, School of Natural Sciences, National University of Sciences and Technology (NUST), H-12 Islamabad, Pakistan
| | - Syedah Afsheen Zahra
- Physics Characterization and Simulations Lab (PCSL), Department of Physics, School of Natural Sciences, National University of Sciences and Technology (NUST), H-12 Islamabad, Pakistan
| | - Usman Naeem
- Physics Characterization and Simulations Lab (PCSL), Department of Physics, School of Natural Sciences, National University of Sciences and Technology (NUST), H-12 Islamabad, Pakistan
| | - Deji Akinwande
- Microelectronics Research Center, The University of Texas at Austin, Austin, TX 78758, USA
| | - Syed Rizwan
- Physics Characterization and Simulations Lab (PCSL), Department of Physics, School of Natural Sciences, National University of Sciences and Technology (NUST), H-12 Islamabad, Pakistan
| |
Collapse
|
28
|
Li J, Jin Y, Wang Y, Zhao Y, Su H. Detecting Pb 2+by a 'turn-on' fluorescence sensor based on DNA functionalized magnetic nanocomposites. NANOTECHNOLOGY 2021; 33:075603. [PMID: 34399416 DOI: 10.1088/1361-6528/ac1dd3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/16/2021] [Indexed: 06/13/2023]
Abstract
Sensitive and selective detection of the lead ion (Pb2+) plays an important role in terms of both human health and environmental protection, as the heavy metal is fairly ubiquitous and highly toxic. The highly stable fluorescence biosensor is composed of Fe3O4@TiO2core-shell nanocomposites, functionalized with a carboxyl fluorescein labeled DNA. The morphology, physical and chemical properties of the sensing nanomaterials were studied by transmission electron microscopy, FT-IR spectroscopy (FT-IR), x-ray powder diffraction and vibrating sample magnetometer. UV-visible and fluorescence spectroscopy were used to characterize the fluorescein functionalized magnetic nanoparticles. The performance of Pb2+detection displayed an excellent linearity (R2 = 0.995) in the range of 10-10to 5 × 10-9ppm with a detection limit of 10-10ppm, based on the optimization of the fabrication process and aptamers' specification. The fluorescence biosensor has an accurate response, excellent recoveries and high adsorbent capacities. It was successfully applied for the determination of Pb2+in contaminated water and serum samples; the detection of limit in both media were 10-10ppm. These features ensure the potential use of aptamer functionalized magnetic nanocomposites as a new class of non-toxic biocompatible sensors for biological and environmental applications.
Collapse
Affiliation(s)
- Jiayi Li
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| | - Yu Jin
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| | - Yaoqiang Wang
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| | - Yilin Zhao
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| | - Haijia Su
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, People's Republic of China
| |
Collapse
|
29
|
Pathak S, Verma R, Kumar P, Singh A, Singhal S, Sharma P, Jain K, Pant RP, Wang X. Facile Synthesis, Static, and Dynamic Magnetic Characteristics of Varying Size Double-Surfactant-Coated Mesoscopic Magnetic Nanoparticles Dispersed Stable Aqueous Magnetic Fluids. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3009. [PMID: 34835770 PMCID: PMC8620981 DOI: 10.3390/nano11113009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 01/03/2023]
Abstract
The present work reports the synthesis of a stable aqueous magnetic fluid (AMF) by dispersing double-surfactant-coated Fe3O4 magnetic nanoparticles (MNPs) in water using a facile ambient scalable wet chemical route. MNPs do not disperse well in water, resulting in low stability. This was improved by dispersing double-surfactant (oleic acid and sodium oleate)-coated MNPs in water, where cross-linking between the surfactants improves the stability of the AMFs. The stability was probed by rheological measurements and all the AMF samples showed a good long-term stability and stability against a gradient magnetic field. Further, the microwave spin resonance behavior of AMFs was studied in detail by corroborating the experimental results obtained from the ferromagnetic resonance (FMR) technique to theoretical predictions by appropriate fittings. A broad spectrum was perceived for AMFs which indicates strong ferromagnetic characteristics. The resonance field shifted to higher magnetic field values with the decrease in particle size as larger-size MNPs magnetize and demagnetize more easily since their magnetic spins can align in the field direction more definitely. The FMR spectra was fitted to obtain various spin resonance parameters. The asymmetric shapes of the FMR spectra were observed with a decrease in particle sizes, which indicates an increase in relaxation time. The relaxation time increased with a decrease in particle sizes (sample A to D) from 37.2779 ps to 42.8301 ps. Further, a detailed investigation of the structural, morphological, and dc magnetic properties of the AMF samples was performed. Room temperature dc magnetic measurements confirmed the superparamagnetic (SPM) characteristics of the AMF and the M-H plot for each sample was fitted with a Langevin function to obtain the domain magnetization, permeability, and hydrodynamic diameter of the MNPs. The saturation magnetization and coercivity of the AMF samples increased with the increase in dispersed MNPs' size of the samples. The improvement in the stability and magnetic characteristics makes AMFs suitable candidates for various biomedical applications such as drug delivery, magnetic fluid hyperthermia, and biomedicines.
Collapse
Affiliation(s)
- Saurabh Pathak
- Department of Mechanical Engineering, University of Melbourne, Parkville, VIC 3052, Australia
- School of Engineering, RMIT University, Melbourne, VIC 3001, Australia; (P.S.); (X.W.)
| | - Rajni Verma
- School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Prashant Kumar
- School of Sciences, RMIT University, Melbourne, VIC 3001, Australia;
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi 110012, India; (A.S.); (K.J.); (R.P.P.)
| | - Arjun Singh
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi 110012, India; (A.S.); (K.J.); (R.P.P.)
| | - Sakshi Singhal
- Institute of Nuclear Medicine & Allied Sciences, DRDO, Brig SK Mazumdar Road, Delhi 110054, India;
| | - Pragati Sharma
- School of Engineering, RMIT University, Melbourne, VIC 3001, Australia; (P.S.); (X.W.)
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi 110012, India; (A.S.); (K.J.); (R.P.P.)
| | - Komal Jain
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi 110012, India; (A.S.); (K.J.); (R.P.P.)
| | - Rajendra Prasad Pant
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi 110012, India; (A.S.); (K.J.); (R.P.P.)
| | - Xu Wang
- School of Engineering, RMIT University, Melbourne, VIC 3001, Australia; (P.S.); (X.W.)
| |
Collapse
|
30
|
Influence of TiO2 concentration on the characteristics of ZnO nanoparticles fabricated via sonication assisted with gelatin. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111350] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
31
|
Abstract
Ag–TiO2 nanostructures were prepared by electrospinning, followed by calcination at 400 °C, and their photocatalytic and antibacterial actions were studied. Morphological characterization revealed the presence of one-dimensional uniform Ag–TiO2 nanostructured nanofibers, with a diameter from 65 to 100 nm, depending on the Ag loading, composed of small crystals interconnected with each other. Structural characterization indicated that Ag was successfully integrated as small nanocrystals without affecting much of the TiO2 crystal lattice. Moreover, the presence of nano Ag was found to contribute to reducing the band gap energy, which enables the activation by the absorption of visible light, while, at the same time, it delays the electron–hole recombination. Tests of their photocatalytic activity in methylene blue, amaranth, Congo red and orange II degradation revealed an increase by more than 20% in color removal efficiency at an almost double rate for the case of 0.1% Ag–TiO2 nanofibers with respect to pure TiO2. Moreover, the minimum inhibitory concentration was found as low as 2.5 mg/mL for E. coli and 5 mg/mL against S. aureus for the 5% Ag–TiO2 nanofibers. In general, the Ag–TiO2 nanostructured nanofibers were found to exhibit excellent structure and physical properties and to be suitable for efficient photocatalytic and antibacterial uses. Therefore, these can be suitable for further integration in various important applications.
Collapse
|
32
|
Du YE, Niu X, He X, Hou K, Liu H, Zhang C. Synthesis and Photocatalytic Activity of TiO 2/CdS Nanocomposites with Co-Exposed Anatase Highly Reactive Facets. Molecules 2021; 26:6031. [PMID: 34641575 PMCID: PMC8512152 DOI: 10.3390/molecules26196031] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 11/17/2022] Open
Abstract
In this work, TiO2/CdS nanocomposites with co-exposed {101}/[111]-facets (NH4F-TiO2/CdS), {101}/{010} facets (FMA-TiO2/CdS), and {101}/{010}/[111]-facets (HF-TiO2/CdS and Urea-TiO2/CdS) were successfully synthesized through a one-pot solvothermal method by using [Ti4O9]2- colloidal solution containing CdS crystals as the precursor. The crystal structure, morphology, specific surface area, pore size distribution, separation, and recombination of photogenerated electrons/holes of the TiO2/CdS nanocomposites were characterized. The photocatalytic activity and cycling performance of the TiO2/CdS nanocomposites were also investigated. The results showed that as-prepared FMA-TiO2/CdS with co-exposed {101}/{010} facets exhibited the highest photocatalytic activity in the process of photocatalytic degradation of methyl orange (MO), and its degradation efficiency was 88.4%. The rate constants of FMA-TiO2/CdS was 0.0167 min-1, which was 55.7, 4.0, 3.7, 3.5, 3.3, and 1.9 times of No catalyst, CdS, HF-TiO2/CdS, NH4F-TiO2/CdS, CM-TiO2, Urea-TiO2/CdS, respectively. The highest photocatalytic activity of FMA-TiO2/CdS could be attributed to the synergistic effects of the largest surface energy, co-exposed {101}/{010} facets, the lowest photoluminescence intensity, lower charge-transfer resistance, and a higher charge-transfer efficiency.
Collapse
Affiliation(s)
- Yi-en Du
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China; (X.N.); (X.H.); (K.H.)
| | - Xianjun Niu
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China; (X.N.); (X.H.); (K.H.)
| | - Xinru He
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China; (X.N.); (X.H.); (K.H.)
| | - Kai Hou
- Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, China; (X.N.); (X.H.); (K.H.)
| | - Huiling Liu
- Department of Mechanics, Jinzhong University, Jinzhong 030619, China
| | - Caifeng Zhang
- Department of Chemistry, Taiyuan Normal University, Jinzhong 030619, China
| |
Collapse
|
33
|
Jawale NS, Arbuj SS, Umarji GG, Rane SB. Synthesis of Anatase/Brookite Mixed Phase TiO
2
Nanostructures and its Photocatalytic Performance Study. ChemistrySelect 2021. [DOI: 10.1002/slct.202102349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Niteen S. Jawale
- Centre for Materials for Electronics Technology (C-MET) Ministry of Electronics and Information Technology (MeitY) Government of India Panchawati Off Pashan Road Pune 411008 India
| | - Sudhir S. Arbuj
- Centre for Materials for Electronics Technology (C-MET) Ministry of Electronics and Information Technology (MeitY) Government of India Panchawati Off Pashan Road Pune 411008 India
| | - Govind G. Umarji
- Centre for Materials for Electronics Technology (C-MET) Ministry of Electronics and Information Technology (MeitY) Government of India Panchawati Off Pashan Road Pune 411008 India
| | - Sunit B. Rane
- Centre for Materials for Electronics Technology (C-MET) Ministry of Electronics and Information Technology (MeitY) Government of India Panchawati Off Pashan Road Pune 411008 India
| |
Collapse
|
34
|
Abstract
The interest in advanced photocatalytic technologies with metal oxide-based nanomaterials has been growing exponentially over the years due to their green and sustainable characteristics. Photocatalysis has been employed in several applications ranging from the degradation of pollutants to water splitting, CO2 and N2 reductions, and microorganism inactivation. However, to maintain its eco-friendly aspect, new solutions must be identified to ensure sustainability. One alternative is creating an enhanced photocatalytic paper by introducing cellulose-based materials to the process. Paper can participate as a substrate for the metal oxides, but it can also form composites or membranes, and it adds a valuable contribution as it is environmentally friendly, low-cost, flexible, recyclable, lightweight, and earth abundant. In term of photocatalysts, the use of metal oxides is widely spread, mostly since these materials display enhanced photocatalytic activities, allied to their chemical stability, non-toxicity, and earth abundance, despite being inexpensive and compatible with low-cost wet-chemical synthesis routes. This manuscript extensively reviews the recent developments of using photocatalytic papers with nanostructured metal oxides for environmental remediation. It focuses on titanium dioxide (TiO2) and zinc oxide (ZnO) in the form of nanostructures or thin films. It discusses the main characteristics of metal oxides and correlates them to their photocatalytic activity. The role of cellulose-based materials on the systems’ photocatalytic performance is extensively discussed, and the future perspective for photocatalytic papers is highlighted.
Collapse
|
35
|
Ermokhina NI, Shvalagin VV, Romanovska NI, Manoryk PA, Barakov RY, Kompanets MO, Sapsay VI, Klymchuk DO, Puziy AM. Synthesis and characterization of different binary and ternary phase mixtures of mesoporous nanocrystalline titanium dioxide. SN APPLIED SCIENCES 2021. [DOI: 10.1007/s42452-021-04474-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
AbstractDifferent phase compositions of mesoporous nanocrystalline TiO2 (meso-nc-TiO2), comprised of anatase (16–100%), rutile (0–70%) and brookite (0–52%) were obtained by sol–gel synthesis with or without hydrothermal treatment (HTT) by means of titanium tetrabutoxide and dibenzo-18-croun-6 as structure-forming agent in the presence of HCl. It was shown, that small amounts of surfactant and/or lanthanum salt as well as HTT determine phase composition and texture of meso-nc-TiO2. All samples were calcined at 500 оС and characterized by SEM, TEM, XRD and N2-adsorption/desorption isotherms. It has been established that photocatalytic properties of almost all obtained samples significantly exceed the photocatalytic activity of Evonik P-25 TiO2 in gas phase ethanol oxidation. The most active sample is characterized by phase composition of anatase (97%)-rutile (3%). It is obvious, that decrease of photocatalytic activity of sample was affected by decrease of anatase phase content. It was shown that the specific surface area of the sample is not a key factor affecting the activity of mixed-phase meso-nc-TiO2 samples in the process of ethanol oxidation.
Collapse
|
36
|
Du Y, Niu X, Zhang C, Li X, Cai X, Guo Y, Wang P. FacileSynthesis of Anatase TiO
2
Nanocrystals with Co‐Exposed{101}, {010}/{100} and [111]‐Facets for EfficientPhotodegradation of Methylene Blue. ChemistrySelect 2021. [DOI: 10.1002/slct.202004195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yi‐en Du
- School of Chemistry & Chemical Engineering Jinzhong University Jinzhong 030619 China
| | - Xianjun Niu
- School of Chemistry & Chemical Engineering Jinzhong University Jinzhong 030619 China
| | - Caifeng Zhang
- Department of Chemistry Taiyuan Normal University Jinzhong 030619 China
| | - Xiaodong Li
- School of Chemistry & Chemical Engineering Jinzhong University Jinzhong 030619 China
| | - Xuemei Cai
- School of Chemistry & Chemical Engineering Jinzhong University Jinzhong 030619 China
| | - Yanqing Guo
- School of Chemistry & Chemical Engineering Jinzhong University Jinzhong 030619 China
| | - Pengfei Wang
- State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 China
| |
Collapse
|
37
|
Pathak S, Verma R, Singhal S, Chaturvedi R, Kumar P, Sharma P, Pant RP, Wang X. Spin dynamics investigations of multifunctional ambient scalable Fe 3O 4 surface decorated ZnO magnetic nanocomposite using FMR. Sci Rep 2021; 11:3799. [PMID: 33589699 PMCID: PMC7884716 DOI: 10.1038/s41598-021-83394-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 12/22/2020] [Indexed: 11/09/2022] Open
Abstract
Microwave spin resonance behavior of the Fe3O4 surface decorated ZnO nanocomposites (FZNC) has been investigated by ferromagnetic resonance (FMR). Modified hydrothermal method has been adopted to fabricate FZNC samples with Fe3O4 nanoparticles chains were used as seeds in the uniform magnetic field to decorate them on the surface of the ZnO nanoparticles in a unique configuration. Spin dynamics investigation confirms the transition of ZnO from diamagnetic to ferromagnetic as the sharp FMR spectra converts to the broad spectra with Fe3O4 nanoparticles incorporation. A single broad FMR spectra confirms that no isolated Fe3+ or Zn2+ ions exist which is also in agreement with XRD confirming suitable composite formation. Further, the increase in Fe3O4 concentration leads to decrease in g-value which is resulting from the internal field enhancement due to magnetic ordering. Also, various spin resonance parameters were calculated for the FZNC which provides a detail information about the magnetic ordering, exchange coupling and anisotropy. Elemental analysis confirms the presence of Fe and Zn simultaneously and transmission electron microscopy (TEM) image show the presence of Fe3O4 on the grain boundaries of ZnO which has been confirmed by taking high-resolution TEM and electron diffraction patterns on both sides of the interface. These unique structural configuration of the FZNC has tremendous potential in various magneto-optoelectronic, spintronics and electro-chemical applications.
Collapse
Affiliation(s)
- Saurabh Pathak
- School of Engineering, RMIT University, Melbourne, VIC, Australia.
- Department of Mechanical Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia.
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi, India.
| | - Rajni Verma
- School of Physics, The University of Melbourne, Parkville, VIC, Australia
| | - Sakshi Singhal
- Institute of Nuclear Medicine & Allied Sciences, DRDO, Brig SK Mazumdar Road, Delhi, India
| | | | - Prashant Kumar
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi, India
| | - Pragati Sharma
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi, India
| | - R P Pant
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi, India
| | - Xu Wang
- School of Engineering, RMIT University, Melbourne, VIC, Australia.
| |
Collapse
|
38
|
Chaurasiya N, Kumar U, Sikarwar S, Yadav B, Yadawa PK. Synthesis of TiO2 nanorods using wet chemical method and their photovoltaic and humidity sensing applications. SENSORS INTERNATIONAL 2021. [DOI: 10.1016/j.sintl.2021.100095] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
39
|
Ligand-to-metal charge transfer (LMCT) complex: New approach to non-enzymatic glucose sensors based on TiO2. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
40
|
Gopalan AI, Lee JC, Saianand G, Lee KP, Chun WY, Hou YL, Kannan V, Park SS, Kim WJ. Cost-Effective Production of TiO 2 with 90-Fold Enhanced Photocatalytic Activity Via Facile Sequential Calcination and Ball Milling Post-Treatment Strategy. MATERIALS 2020; 13:ma13225072. [PMID: 33182834 PMCID: PMC7696072 DOI: 10.3390/ma13225072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 10/28/2020] [Accepted: 11/06/2020] [Indexed: 11/25/2022]
Abstract
Titanium dioxide (TiO2), the golden standard among the photocatalysts, exhibits a varying level of photocatalytic activities (PCA) amongst the synthetically prepared and commercially available products. For commercial applications, superior photoactivity and cost-effectiveness are the two main factors to be reckoned with. This study presents the development of simple, cost-effective post-treatment processes for a less costly TiO2 to significantly enhance the PCA to the level of expensive commercial TiO2 having demonstrated superior photoactivities. We have utilized sequential calcination and ball milling (BM) post-treatment processes on a less-costlier KA100 TiO2 and demonstrated multi-fold (nearly 90 times) enhancement in PCA. The post-treated KA100 samples along with reference commercial samples (P25, NP400, and ST01) were well-characterized by appropriate instrumentation and evaluated for the PCA considering acetaldehyde photodegradation as the model reaction. Lattice parameters, phase composition, crystallite size, surface functionalities, titanium, and oxygen electronic environments were evaluated. Among post-treated KA100, the sample that is subjected to sequential 700 °C calcination and BM (KA7-BM) processes exhibited 90-fold PCA enhancement over pristine KA100 and the PCA-like commercial NP400 (pure anatase-based TiO2). Based on our results, we attribute the superior PCA for KA7-BM due to the smaller crystallite size, the co-existence of mixed anatase-srilankite-rutile phases, and the consequent multiphase heterojunction formation, higher surface area, lattice disorder/strain generation, and surface oxygen environment. The present work demonstrates a feasible potential for the developed post-treatment strategy towards commercial prospects.
Collapse
Affiliation(s)
- Anantha-Iyengar Gopalan
- School of Architecture and Civil Engineering, Daegyeong Regional Infrastructure Technology Development Center, Kyungpook National University, Daegu 41566, Korea; (A.-I.G.); (K.-P.L.)
| | - Jun-Cheol Lee
- Department of Architecture, Seowon University, Cheongju 28674, Korea;
| | - Gopalan Saianand
- Global Centre for Environmental Remediation (GCER), Faculty of Science, The University of Newcastle, Callaghan 2308, NSW, Australia;
| | - Kwang-Pill Lee
- School of Architecture and Civil Engineering, Daegyeong Regional Infrastructure Technology Development Center, Kyungpook National University, Daegu 41566, Korea; (A.-I.G.); (K.-P.L.)
| | - Woo-Young Chun
- Real-scale Fire Testing; Research Center, Korea Conformity Laboratories, 33-72, Eonjang 1-Gil, Samcheok-si, Gangwon-do 25913, Korea;
| | - Yao-long Hou
- Department of Civil Engineering, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu 41566, Korea; (Y.-l.H.); (S.-S.P.)
| | | | - Sung-Sik Park
- Department of Civil Engineering, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu 41566, Korea; (Y.-l.H.); (S.-S.P.)
| | - Wha-Jung Kim
- School of Architecture and Civil Engineering, Daegyeong Regional Infrastructure Technology Development Center, Kyungpook National University, Daegu 41566, Korea; (A.-I.G.); (K.-P.L.)
- Correspondence: ; Tel.: +82-53-950-6335
| |
Collapse
|
41
|
Sano K, Kuttassery F, Shimada T, Ishida T, Takagi S, Ohtani B, Yamakata A, Honma T, Tachibana H, Inoue H. Optically Transparent Colloidal Dispersion of Titania Nanoparticles Storable for Longer than One Year Prepared by Sol/Gel Progressive Hydrolysis/Condensation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:44743-44753. [PMID: 32915534 DOI: 10.1021/acsami.0c12951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The molecular catalyst sensitized system (MCSS), where an excited molecular catalyst adsorbed on a semiconductor such as TiO2 injects electrons to the conduction band of the semiconductor leading to hydrogen evolution/CO2 reduction coupled with an oxidation of water on the molecular catalyst, has been one of the most probable candidates in the approach to artificial photosynthesis. For a full utilization of visible light, however, a serious light scattering of the aqueous suspension of TiO2 in the visible region, which is generally experienced, should be avoided. Here, we report a preparation of optically transparent colloidal dispersion of TiO2 by the sol/gel reaction of TiCl4 through progressive hydrolysis/condensation under the basic condition without any calcination processes. The TiO2 nanoparticles (TiO2(NPs)) obtained were characterized as an amorphous particle (∼10-15 nm) having a microcrystal domain of anatase within several nm by XRD, Raman spectroscopies, XRF, XAFS, TG/DTA, and HRTEM, respectively. The energy-resolved distribution of carrier electron traps in TiO2(NPs) as a fingerprint of TiO2 was characterized through reversed double-beam photo-acoustic spectroscopy to have a close similarity to that of TiO2(ST-01) as well as the observation of carrier traps by transient absorption spectroscopy. Though the powder TiO2(NP) itself was not dispersed well in aqueous solution, the wet TiO2(NPs) as prepared before being dried up provided a completely transparent aqueous dispersion under the acidic condition (1 M HCl). Addition of methanol enabled the colloidal dispersion (TiO2(NPs, MeOH/H2O, 0.1 M HCl)) to keep the optical transparency for longer than 1 year (550 days), which is the first example of TiO2 dispersion storable for such a long period. TiO2(NPs, MeOH/H2O) exhibited a moderate photocatalytic reactivity of H2 evolution with a quantum yield of ∼2.6% upon 365 nm light irradiation. An optically transparent thin film of TiO2(NPs, MeOH/H2O) was also successfully prepared on a glass plate to exhibit an enhanced hydrophilicity upon UV light irradiation.
Collapse
Affiliation(s)
- Keito Sano
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Fazalurahman Kuttassery
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Tetsuya Shimada
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Tamao Ishida
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Shinsuke Takagi
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Bunsho Ohtani
- Institute for catalysis Hokkaido University, North 21, West 10, Sapporo 001-0021, Japan
| | - Akira Yamakata
- Toyota Technological Institute, 2-12-1, Hisakata, Tempaku, Nagoya 468-8511, Japan
| | - Tetsuo Honma
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | - Hiroshi Tachibana
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| | - Haruo Inoue
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan
| |
Collapse
|
42
|
Svora P, Ecorchard P, Pližingrová E, Komárková B, Svorová Pawełkowicz S, Murafa N, Maříková M, Smržová D, Wagner B, Machálková A, Bezdička P. Influence of Inorganic Bases on the Structure of Titanium Dioxide-Based Microsheets. ACS OMEGA 2020; 5:23703-23717. [PMID: 32984689 PMCID: PMC7513341 DOI: 10.1021/acsomega.0c02570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 08/21/2020] [Indexed: 06/11/2023]
Abstract
Laboratory synthesis of microsheets of titanium dioxide from titanyl sulfate involves the use of ammonia solution, whereas another inorganic base is most likely to be employed at the industrial level, as ammonia is a toxic agent and therefore should be avoided according to European Union (EU) regulations. Selected nontoxic bases such as sodium, potassium, and lithium hydroxides have been tested as an alternative to ammonia solution to obtain amorphous and crystalline TiO2-based microsheets. The final products obtained at each step of the procedure (samples lyophilized and annealed at 230 and 800 °C) were analyzed with electron and atomic force microscopy, X-ray powder diffraction, thermal analysis, and Fourier transform infrared (FTIR) and Raman spectroscopies to determine their morphology and phase composition. The differences in the morphology of the obtained products were described in detail as well as phase and structural composition throughout the process. It was found that, in the last step of the synthesis, microsheets annealed at 800 °C were built of small rods and oval or platy crystalline particles depending on the base used. The temperature of formation of anatase, rutile, and alkali-metal titanates in correlation with the ionic radius of the alkali metal present in the sample was discussed.
Collapse
Affiliation(s)
- Petr Svora
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
- Institute
of Physics of the Czech Academy
of Sciences, Na Slovance
1999/2, 182 21 Prague
8, Czech Republic
| | - Petra Ecorchard
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
| | - Eva Pližingrová
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
| | - Bára Komárková
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
- Department
of Chemistry, University of Ostrava, 30. dubna 22, 701 03 Ostrava, Czech Republic
| | | | - Natalija Murafa
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
| | - Monika Maříková
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
| | - Darina Smržová
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
| | - Barbara Wagner
- Faculty
of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Aneta Machálková
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
| | - Petr Bezdička
- Institute
of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež, Czech Republic
| |
Collapse
|
43
|
Luna-Sanguino G, Tolosana-Moranchel A, Carbajo J, Pascual L, Rey A, Faraldos M, Bahamonde A. Role of surrounding crystallization media in TiO2 polymorphs coexistence and the effect on AOPs performance. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
44
|
Telbiz GM, Vlasenko NV, Didenko OZ, Strizhak PE. Acid–Base and Catalytic Properties of Sulfated Mesoporous Titanium Oxide in Glycerol Oligomerization. THEOR EXP CHEM+ 2020. [DOI: 10.1007/s11237-020-09652-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
45
|
Olive Leaves as Biotemplates for Enhanced Solar-Light Harvesting by a Titania-Based Solid. NANOMATERIALS 2020; 10:nano10061057. [PMID: 32486324 PMCID: PMC7353264 DOI: 10.3390/nano10061057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 05/24/2020] [Accepted: 05/26/2020] [Indexed: 11/16/2022]
Abstract
Olive leaves (by-product from olive oil production in olive mills) were used as biotemplates to synthesize a titania-based artificial olive leaf (AOL). Scanning electron microscopy (SEM) images of AOL showed the successful replication of trichomes and internal structure channels present in olive leaves. The BET surface area of AOL was 52 m2·g-1. X-ray diffraction (XRD) and Raman spectra revealed that the resulting solid was in the predominantly-anatase crystalline form (7.5 nm average particle size). Moreover, the synthesis led to a red-shift in light absorption as compared to reference anatase (gap energies of 2.98 and 3.2 eV, respectively). The presence of surface defects (as evidenced by X-ray photoelectron spectroscopy, XPS, and electron paramagnetic resonance spectroscopy, EPR) and doping elements (e.g., 1% nitrogen, observed by elemental analysis and XPS) could account for that. AOL was preliminarily tested as a catalyst for hydrogen production through glycerol photoreforming and exhibited an activity 64% higher than reference material Evonik P25 under solar irradiation and 144% greater under ultraviolet radiation, (under voltage) UV.
Collapse
|
46
|
Kitamura N, Soejima T. Low-temperature One-pot Aqueous Synthesis and Application of Anatase/Rutile TiO 2 Composite Nanoparticles. CHEM LETT 2020. [DOI: 10.1246/cl.200137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Naoki Kitamura
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| | - Tetsuro Soejima
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502, Japan
| |
Collapse
|
47
|
Jordanovová V, Losertová M, Štencek M, Lukášová T, Simha Martynková G, Peikertová P. Microstructure and Properties of Nanostructured Coating on Ti6Al4V. MATERIALS 2020; 13:ma13030708. [PMID: 32033268 PMCID: PMC7040900 DOI: 10.3390/ma13030708] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/20/2020] [Accepted: 02/03/2020] [Indexed: 11/16/2022]
Abstract
Implant surface properties of Ti6Al4V alloy that is currently used as a biocompatible material because of a variety of unique properties can be improved by a self-organized TiO2 layer. The TiO2 nanotubes forming on the titanium-based materials is a relatively recent technology for the surface properties modification and represents pronounced potential in promoting cell adhesion, proliferation, and differentiation that facilitate an implant osseointegration. This work focuses on the influence of surface treatment quality and anodic oxidation parameters on the structure features and properties of TiO2 nanotube coatings. The nanotubes were formed on Ti6Al4V alloy substrates by simultaneous surface oxidation and controlled dissolving of an oxide film in the presence of fluorine ions. The anodization process on ground or polished samples was performed at experimental condition of 30 V for 1 h. The selected anodized samples were heat treated for 2 h at 500 °C under flowing argon. All samples were characterized by scanning electron microscopy, X-ray diffraction analysis, and Raman spectroscopy. The corrosion rate in physiological solution reached 0.0043, 0.0182, and 0.0998 mm per year for the samples in polished and not-anodized, as-anodized, and anodized-heat treated conditions, respectively.
Collapse
Affiliation(s)
- Veronika Jordanovová
- Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Poruba, Czech Republic; (V.J.); (T.L.)
| | - Monika Losertová
- Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Poruba, Czech Republic; (V.J.); (T.L.)
- Correspondence:
| | - Michal Štencek
- Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Poruba, Czech Republic; (V.J.); (T.L.)
| | - Tereza Lukášová
- Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Poruba, Czech Republic; (V.J.); (T.L.)
| | - Gražyna Simha Martynková
- Nanotechnology Centre, VŠB—Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Poruba, Czech Republic; (G.S.M.); (P.P.)
- IT4Innovations Centre of Excellence, VŠB—Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Poruba, Czech Republic
| | - Pavlína Peikertová
- Nanotechnology Centre, VŠB—Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Poruba, Czech Republic; (G.S.M.); (P.P.)
| |
Collapse
|
48
|
Hasanzadeh Kafshgari M, Goldmann WH. Insights into Theranostic Properties of Titanium Dioxide for Nanomedicine. NANO-MICRO LETTERS 2020; 12:22. [PMID: 34138062 PMCID: PMC7770757 DOI: 10.1007/s40820-019-0362-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 12/08/2019] [Indexed: 05/02/2023]
Abstract
Titanium dioxide (TiO2) nanostructures exhibit a broad range of theranostic properties that make them attractive for biomedical applications. TiO2 nanostructures promise to improve current theranostic strategies by leveraging the enhanced quantum confinement, thermal conversion, specific surface area, and surface activity. This review highlights certain important aspects of fabrication strategies, which are employed to generate multifunctional TiO2 nanostructures, while outlining post-fabrication techniques with an emphasis on their suitability for nanomedicine. The biodistribution, toxicity, biocompatibility, cellular adhesion, and endocytosis of these nanostructures, when exposed to biological microenvironments, are examined in regard to their geometry, size, and surface chemistry. The final section focuses on recent biomedical applications of TiO2 nanostructures, specifically evaluating therapeutic delivery, photodynamic and sonodynamic therapy, bioimaging, biosensing, tissue regeneration, as well as chronic wound healing.
Collapse
Affiliation(s)
| | - Wolfgang H Goldmann
- Department of Physics, Biophysics Group, University of Erlangen-Nuremberg, 91052, Erlangen, Germany.
| |
Collapse
|
49
|
Mubarak S, Dhamodharan D, Divakaran N, Kale MB, Senthil T, Wu L, Wang J. Enhanced Mechanical and Thermal Properties of Stereolithography 3D Printed Structures by the Effects of Incorporated Controllably Annealed Anatase TiO 2 Nanoparticles. NANOMATERIALS 2020; 10:nano10010079. [PMID: 31906295 PMCID: PMC7022956 DOI: 10.3390/nano10010079] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 12/15/2019] [Accepted: 12/25/2019] [Indexed: 12/22/2022]
Abstract
Fabrication of low-cost, durable and efficient metal oxide nanocomposites were successfully synthesized and reinforced with photo-resin via 3-dimensional printing. Here, we put forward a novel approach to enhance the mechanical and thermal behaviors of stereolithography (SLA) 3D printed architecture by adding TiO2 nanoparticles (TNPs) in different crystalline phases (anatase and rutile), which were obtained at different annealing temperatures from 400 °C to 1000°C. The heat-treated anatase TNPs were scrutinized by X-ray diffraction(XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, diffusive reflectance spectroscopy (DRS), and transmission electron microscopy (TEM) analysis. Among all the samples, at 800 °C, annealed anatase TNPs exposed a highly crystalline anatase phase, having a low energy bandgap and a comparably high tensile strength (47.43 MPa) and high elastic modulus (2.261 GPa) for the 3D printed samples, showing improvement by 103% and 32%, respectively, compared with the printed pristine stereolithography resin (SLR) sample. Moreover, enhanced storage modulus and tan δ values were achieved via the better interfacial interactions between the incorporated nanofillers and the SLR matrix. In addition to this, enhanced thermal conductivity and thermal stability of the SLR matrix were also noted. The low energy bandgap and nanoscale size of the fillers helped to achieve good dispersion and allowed the UV light to penetrate at a maximum depth through the photo resin.
Collapse
Affiliation(s)
- Suhail Mubarak
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China; (S.M.); (D.D.); (N.D.); (M.B.K.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Duraisami Dhamodharan
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China; (S.M.); (D.D.); (N.D.); (M.B.K.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nidhin Divakaran
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China; (S.M.); (D.D.); (N.D.); (M.B.K.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Manoj B. Kale
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China; (S.M.); (D.D.); (N.D.); (M.B.K.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - T. Senthil
- Advanced Research School for Technology and Product Simulation, Central Institute of Plastics Engineering and Technology, Chennai 600032, India;
| | - Lixin Wu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China; (S.M.); (D.D.); (N.D.); (M.B.K.)
- Correspondence: (L.W.); (J.W.)
| | - Jianlei Wang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China; (S.M.); (D.D.); (N.D.); (M.B.K.)
- Correspondence: (L.W.); (J.W.)
| |
Collapse
|
50
|
Tomás‐Gamasa M, Mascareñas JL. TiO
2
‐Based Photocatalysis at the Interface with Biology and Biomedicine. Chembiochem 2019; 21:294-309. [DOI: 10.1002/cbic.201900229] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 06/11/2019] [Indexed: 01/06/2023]
Affiliation(s)
- María Tomás‐Gamasa
- Centro Singular de Investigación en Química Biolóxica, e Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Campus Vida 15782 Santiago de Compostela Spain
| | - José Luis Mascareñas
- Centro Singular de Investigación en Química Biolóxica, e Materiais Moleculares (CIQUS)Departamento de Química OrgánicaUniversidade de Santiago de Compostela Campus Vida 15782 Santiago de Compostela Spain
| |
Collapse
|