1
|
Gorin M, Shabani M, Votat S, Lebrun L, Foukmeniok Mbokou S, Pontié M. Application of fungal-based microbial fuel cells for biodegradation of pharmaceuticals: Comparative study of individual vs. mixed contaminant solutions. CHEMOSPHERE 2024; 363:142849. [PMID: 39009093 DOI: 10.1016/j.chemosphere.2024.142849] [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: 09/28/2023] [Revised: 06/04/2024] [Accepted: 07/13/2024] [Indexed: 07/17/2024]
Abstract
The present study focuses on the application of fungal-based microbial fuel cells (FMFC) for the degradation of organic pollutants including Acetaminophen (APAP), Para-aminophenol (PAP), Sulfanilamide (SFA), and finally Methylene Blue (MB). The objective is to investigate the patterns of degradation (both individually and as a mixture solution) of the four compounds in response to fungal metabolic processes, with an emphasis on evaluating the possibility of generating energy. Linear Sweep Voltammetry (LSV) has been used for electrochemical analysis of the targeted compounds on a Glassy Carbon Electrode (GCE). A dual chamber MFC has been applied wherein the cathodic compartment, the reduction reaction of oxygen was catalyzed by an elaborated biofilm of Trametes trogii, and the anodic chamber consists of a mixed solution of 200 mg L-1 APAP, PAP, MB, and SFA in 0.1 M PBS and an elaborated biofilm of Trichoderma harzianum. The obtained results showed that all the tested molecules were degraded over time by the Trichoderma harzianum. The biodegradation kinetics of all the tested molecules were found to be in the pseudo-first-order. The results of half-lives and the degradation rate reveal that APAP in its individual form degrades relatively slower (0.0213 h-1) and has a half-life of 33 h compared to its degradation in a mixed solution with a half-life of 20 h. SFA showed the longest half-life in the mixed condition (98 h) which is the opposite of its degradation as individual molecules (20 h) as the fastest molecule compared to other pollutants. The maximum power density of the developed MFC dropped from 0.65 mW m-2 to 0.32 mW m-2 after 45.5 h, showing that the decrease of the residual concentration of molecules in the anodic compartment leads to the decrease of the MFC performance.
Collapse
Affiliation(s)
- Melody Gorin
- University of Angers, Group Analysis and Processes (GA&P), Dept. of Chemistry, 2 Bd. A. de Lavoisier 49045 Angers cedex 01, France
| | - Mehri Shabani
- University of Angers, Group Analysis and Processes (GA&P), Dept. of Chemistry, 2 Bd. A. de Lavoisier 49045 Angers cedex 01, France; ESAIP La Salle, CERADE, 18, rue du 8 mai 1945, Saint-Barthélemy d'Anjou, Cedex, 49180, France.
| | - Sébastien Votat
- Normandie Université, Université Rouen Normandie, CNRS UMR, 6270, Polymères, Biopolymères, Surfaces, 76821, Mont Saint Aignan, France
| | - Laurent Lebrun
- Normandie Université, Université Rouen Normandie, CNRS UMR, 6270, Polymères, Biopolymères, Surfaces, 76821, Mont Saint Aignan, France
| | - Serge Foukmeniok Mbokou
- University of Angers, Group Analysis and Processes (GA&P), Dept. of Chemistry, 2 Bd. A. de Lavoisier 49045 Angers cedex 01, France
| | - Maxime Pontié
- University of Angers, Group Analysis and Processes (GA&P), Dept. of Chemistry, 2 Bd. A. de Lavoisier 49045 Angers cedex 01, France
| |
Collapse
|
2
|
Rahimihaghighi M, Gigli M, Ficca VCA, Placidi E, Sgarzi M, Crestini C. Lignin-Derived Sustainable Nano-Platforms: A Multifunctional Solution for an Efficient Dye Removal. CHEMSUSCHEM 2024:e202400841. [PMID: 38899482 DOI: 10.1002/cssc.202400841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/17/2024] [Accepted: 06/20/2024] [Indexed: 06/21/2024]
Abstract
In contrast to conventional non-biobased adsorbents, lignin emerges as a cost-effective and environmentally benign alternative for water treatment. This study identifies unexpected and unpredicted multifunctional properties of lignin nanoparticles (LNPs). LNPs, which are prepared by simple physical processes, demonstrated for the first time to behave as multifunctional materials able to adsorb and photodegrade methylene blue (MB) in aqueous medium upon UV irradiation. Furthermore, the synthetic approach adopted to synthesize LNPs - and therefore their surface properties - strongly affects their performances. More specifically, LNPs obtained by solvent-antisolvent nanoprecipitation (SLNPs) show the highest MB adsorption properties (98 % removal), reaching a maximum adsorption capacity of 43.0 mg g-1, and the fastest adsorption kinetics with respect to other lignin-based adsorbents. Conversely, hydrotropic LNPs (HLNPs) exhibit exceptional photocatalytic activity, resulting in 98 % MB degradation over 6 hours of UV irradiation, combined with the ability to be easily recycled and reused. The present effort paves the way for the use of LNPs as efficient multifunctional materials able to perform concurrently adsorption and photocatalytic degradation of dye pollutants, toward the creation of a sustainable biobased water treatment platform.
Collapse
Affiliation(s)
- Maryam Rahimihaghighi
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari Venezia, Via Torino 155, 30172, Venice Mestre, Italy
- Department of Architecture and Industrial Design, Università degli Studi della Campania "Luigi Vanvitelli", Via San Lorenzo, Abbazia di San Lorenzo, 81031, Aversa, Italy
| | - Matteo Gigli
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari Venezia, Via Torino 155, 30172, Venice Mestre, Italy
| | - Valerio C A Ficca
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
- Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 2, 00185, Rome, Italy
| | - Ernesto Placidi
- Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 2, 00185, Rome, Italy
| | - Massimo Sgarzi
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari Venezia, Via Torino 155, 30172, Venice Mestre, Italy
| | - Claudia Crestini
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari Venezia, Via Torino 155, 30172, Venice Mestre, Italy
| |
Collapse
|
3
|
Faisal S, Majid SS, Ahad A, Sofi FA, Mohanta S, Gupta M, Sahu P, Hsieh WP, Srivastava H, Ikram M, Shukla DK. Photocatalytic Activity of BaAl 2O 4 for Water Purification. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8418-8426. [PMID: 38588383 DOI: 10.1021/acs.langmuir.3c03896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Degradation of dyes under natural light sources is one of the most active research areas in basic science for greener technology. In this context, the photocatalytic activity of semiconductors has received massive attention in solving water treatment-related issues as these possess enormous potential for degrading organic impurities. Here, we report that barium aluminate (BaAl2O4, BAO), which has been extensively studied for photoluminescence applications, is found to be a highly potent candidate for photocatalytic activities. We have explored the degradation of dyes (meant for water purification) by using the photocatalytic properties of pure and Dy- and Yb-codoped BAO. Crystal structure, electron microscopy, and Raman analysis of the autocombustion-synthesized pure and codoped BAO samples revealed significant morphological changes such as increased particle size and stabilization of rod-like structures. UV-vis absorbance measurements confirm the presence of multiple bandgaps in the BAO samples, which is substantiated by X-ray absorption spectroscopy measurements. Photocatalytic degradation studies of methylene blue (MB) dye (with different catalyst concentrations, dopings, and MB dye concentrations) have been carried out by using BAO. The kinetics of the photocatalytic degradation measurements has been explained by the Boltzmann distribution function, and the fastest (in less than 40 min), with more than 99% degradation of MB impurity, is reported here for the first time in BAO compounds. Synthesized BAO samples show excellent cyclic stability, which is essential for their potential applications in environmental remediation. The trade-off between the enhancement of surface area and increased particle size is considered the key parameter for controlling the photocatalytic performance of the BAO catalyst after Dy and Yb codopings.
Collapse
Affiliation(s)
- Shah Faisal
- Department of Physics, National Institute of Technology, Srinagar 190006, Jammu and Kashmir, India
| | - Sofi Suhail Majid
- Department of Physics, National Institute of Technology, Srinagar 190006, Jammu and Kashmir, India
| | - Abdul Ahad
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Feroz Ahmad Sofi
- Department of Chemistry, University of Kashmir, Srinagar 190006, Jammu and Kashmir, India
| | - Samanway Mohanta
- UGC-DAE Consortium for Scientific Research, Indore 452001, India
| | - Mukul Gupta
- UGC-DAE Consortium for Scientific Research, Indore 452001, India
| | - Pabitra Sahu
- Raja Ramanna Center for Advanced Technology, Indore 452013, India
| | - Wen-Pin Hsieh
- Institute of Earth Sciences, Academia Sinica, Nankang, Taipei 11529, Taiwan
| | | | - Mohd Ikram
- Department of Physics, National Institute of Technology, Srinagar 190006, Jammu and Kashmir, India
| | | |
Collapse
|
4
|
Omotosho KD, Gurung V, Banerjee P, Shevchenko EV, Berman D. Self-Cleaning Highly Porous TiO 2 Coating Designed by Swelling-Assisted Sequential Infiltration Synthesis (SIS) of a Block Copolymer Template. Polymers (Basel) 2024; 16:308. [PMID: 38337197 DOI: 10.3390/polym16030308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 01/19/2024] [Accepted: 01/20/2024] [Indexed: 02/12/2024] Open
Abstract
Photocatalytic self-cleaning coatings with a high surface area are important for a wide range of applications, including optical coatings, solar panels, mirrors, etc. Here, we designed a highly porous TiO2 coating with photoinduced self-cleaning characteristics and very high hydrophilicity. This was achieved using the swelling-assisted sequential infiltration synthesis (SIS) of a block copolymer (BCP) template, which was followed by polymer removal via oxidative thermal annealing. The quartz crystal microbalance (QCM) was employed to optimize the infiltration process by estimating the mass of material infiltrated into the polymer template as a function of the number of SIS cycles. This adopted swelling-assisted SIS approach resulted in a smooth uniform TiO2 film with an interconnected network of pores. The synthesized film exhibited good crystallinity in the anatase phase. The resulting nanoporous TiO2 coatings were tested for their functional characteristics. Exposure to UV irradiation for 1 h induced an improvement in the hydrophilicity of coatings with wetting angle reducing to unmeasurable values upon contact with water droplets. Furthermore, their self-cleaning characteristics were tested by measuring the photocatalytic degradation of methylene blue (MB). The synthesized porous TiO2 nanostructures displayed promising photocatalytic activity, demonstrating the degradation of approximately 92% of MB after 180 min under ultraviolet (UV) light irradiation. Thus, the level of performance was comparable to the photoactivity of commercial anatase TiO2 nanoparticles of the same quantity. Our results highlight a new robust approach for designing hydrophilic self-cleaning coatings with controlled porosity and composition.
Collapse
Affiliation(s)
- Khalil D Omotosho
- Materials Science and Engineering Department, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
| | - Vasanta Gurung
- Materials Science and Engineering Department, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
| | - Progna Banerjee
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Elena V Shevchenko
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA
- Department of Chemistry, James Franck Institute, University of Chicago, Chicago, IL 60637, USA
| | - Diana Berman
- Materials Science and Engineering Department, University of North Texas, 1155 Union Circle, Denton, TX 76203, USA
| |
Collapse
|
5
|
Inphonlek S, Ruksakulpiwat C, Ruksakulpiwat Y. The Effect of Silver Nanoparticles/Titanium Dioxide in Poly(acrylic acid- co-acrylamide)-Modified, Deproteinized, Natural Rubber Composites on Dye Removal. Polymers (Basel) 2023; 16:92. [PMID: 38201757 PMCID: PMC10780644 DOI: 10.3390/polym16010092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
This work aims to enhance the dye-removal performance of prepared poly(acrylic acid-co-acrylamide)-modified, deproteinized, natural rubber ((PAA-co-PAM)-DPNR) through incorporation with silver nanoparticles/titanium dioxide. The (PAA-co-PAM)-DPNR was prepared by emulsion-graft copolymerization with a grafting efficiency of 10.20 ± 2.33 to 54.26 ± 1.55%. The composites based on (PAA-co-PAM)-DPNR comprising silver nanoparticles and titanium dioxide ((PAA-co-PAM)-DPNR/Ag-TiO2) were then prepared by latex compounding using the fixed concentration of AgNO3 (0.5 phr) and varying concentrations of TiO2 at 1.0, 2.5, and 5.0 phr. The formation of silver nanoparticles was obtained by heat and applied pressure. The composites had a porous morphology as they allowed water to diffuse in their structure, allowing the high specific area to interact with dye molecules. The incorporation of silver nanoparticles/titanium dioxide improved the compressive modulus from 1.015 ± 0.062 to 2.283 ± 0.043 KPa. The (PAA-co-PAM)-DPNR/Ag-TiO2 composite with 5.0 phr of TiO2 had a maximum adsorption capacity of 206.42 mg/g, which increased by 2.02-fold compared to (PAA-co-PAM)-DPNR. The behavior of dye removal was assessed with the pseudo-second-order kinetic model and Langmuir isotherm adsorption model. These composites can maintain their removal efficiency above 90% for up to five cycles. Thus, these composites could have the potential for dye-removal applications.
Collapse
Affiliation(s)
- Supharat Inphonlek
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Chaiwat Ruksakulpiwat
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Yupaporn Ruksakulpiwat
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand;
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| |
Collapse
|
6
|
Malec D, Warszyńska M, Repetowski P, Siomchen A, Dąbrowski JM. Enhancing Visible-Light Photocatalysis with Pd(II) Porphyrin-Based TiO 2 Hybrid Nanomaterials: Preparation, Characterization, ROS Generation, and Photocatalytic Activity. Molecules 2023; 28:7819. [PMID: 38067548 PMCID: PMC10707769 DOI: 10.3390/molecules28237819] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/24/2023] [Accepted: 11/26/2023] [Indexed: 04/07/2024] Open
Abstract
Novel hybrid TiO2-based materials were obtained by adsorption of two different porphyrins on the surface of nanoparticles-commercially available 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) and properly modified metalloporphyrin-5,10,15,20-tetrakis(2,6-difluoro-3-sulfophenyl)porphyrin palladium(II) (PdF2POH). The immobilization of porphyrins on the surface of TiO2 was possible due to the presence of sulfonyl groups. To further elevate the adsorption of porphyrin, an anchoring linker-4-hydroxybenzoic acid (PHBA)-was used. The synthesis of hybrid materials was proven by electronic absorption spectroscopy, dynamic light scattering (DLS), and photoelectrochemistry. Results prove the successful photosensitization of TiO2 to visible light by both porphyrins. However, the presence of the palladium ion in the modifier structure played a key role in strong adsorption, enhanced charge separation, and thus effective photosensitization. The incorporation of halogenated metalloporphyrins into TiO2 facilitates the enhancement of the comprehensive characteristics of the investigated materials and enables the evaluation of their performance under visible light. The effectiveness of reactive oxygen species (ROS) generation was also determined. Porphyrin-based materials with the addition of PHBA seemed to generate ROS more effectively than other composites. Interestingly, modifications influenced the generation of singlet oxygen for TPPS but not hydroxyl radical, in contrast to PdF2POH, where singlet oxygen generation was not influenced but hydroxyl radical generation was increased. Palladium (II) porphyrin-modified materials were characterized by higher photostability than TPPS-based nanostructures, as TPPS@PHBA-P25 materials showed the highest singlet oxygen generation and may be oxidized during light exposure. Photocatalytic activity tests with two model pollutants-methylene blue (MB) and the opioid drug tramadol (TRML)-confirmed the light dose-dependent degradation of those two compounds, especially PdF2POH@P25, which led to the virtually complete degradation of MB.
Collapse
Affiliation(s)
- Dawid Malec
- Faculty of Chemistry, Jagiellonian University, 30-387 Kraków, Poland; (D.M.); (M.W.); (P.R.); (A.S.)
| | - Marta Warszyńska
- Faculty of Chemistry, Jagiellonian University, 30-387 Kraków, Poland; (D.M.); (M.W.); (P.R.); (A.S.)
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, 30-348 Kraków, Poland
| | - Paweł Repetowski
- Faculty of Chemistry, Jagiellonian University, 30-387 Kraków, Poland; (D.M.); (M.W.); (P.R.); (A.S.)
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, 30-348 Kraków, Poland
| | - Anton Siomchen
- Faculty of Chemistry, Jagiellonian University, 30-387 Kraków, Poland; (D.M.); (M.W.); (P.R.); (A.S.)
| | - Janusz M. Dąbrowski
- Faculty of Chemistry, Jagiellonian University, 30-387 Kraków, Poland; (D.M.); (M.W.); (P.R.); (A.S.)
| |
Collapse
|
7
|
Mubeen K, Safeen K, Irshad A, Safeen A, Ghani T, Shah WH, Khan R, Ahmad KS, Casin R, Rashwan MA, Elansary HO, Shah A. ZnO/CuSe composite-mediated bandgap modulation for enhanced photocatalytic performance against methyl blue dye. Sci Rep 2023; 13:19580. [PMID: 37949952 PMCID: PMC10638292 DOI: 10.1038/s41598-023-46780-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 11/04/2023] [Indexed: 11/12/2023] Open
Abstract
The removal of toxic dye pigments from the environment is of utmost importance since even trace amounts of these pollutants can lead to harmful impacts on ecosystems. Heterogeneous photocatalysis is a potential technique for eliminating microbiological, inorganic, and organic pollutants from wastewater. Here, we report the band gap alteration of ZnO by making its composites with CuSe to enhance photocatalytic activity. The purpose is to develop metal oxide nanocomposites (ZnO/CuSe) as an effective and efficient material for the photodegradation of methyl blue. The photocatalysts, ZnO nanorods, CuSe, and ZnO/CuSe nanocomposites of different weight ratios were synthesized by the simple and cost-effective technique of precipitation. UV-Vis spectra verified that the ZnO/CuSe photocatalyst improved absorption in the visible region. The optical bandgap of ZnO/CuSe nanocomposites reduced from 3.37 to 2.68 eV when CuSe concentration increased from 10 to 50%. ZnO/CuSe composites demonstrated better photocatalytic activity than ZnO when exposed to UV-visible light. The pure ZnO nanorods could absorb UV light and the nanocomposites could absorb visible light only; this was attributed to the transfer of excited high-energy electrons from ZnO to CuSe.
Collapse
Affiliation(s)
- Khalida Mubeen
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore, Islamabad, 45650, Pakistan
- National Institute of Lasers and Optoelectronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan
| | - Kashif Safeen
- Department of Physics, Abdul Wali Khan University, Mardan, 23200, Pakistan
| | - Afshan Irshad
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore, Islamabad, 45650, Pakistan
- Center for Mathematical Sciences, PIEAS, Nilore, Islamabad, 45650, Pakistan
| | - Akif Safeen
- Department of Physics, University of Poonch Rawalakot, Rawalakot, AJK, 12350, Pakistan.
| | - Tayyaba Ghani
- Department of Metallurgy and Material Engineering, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore, Islamabad, 45650, Pakistan
| | - Wiqar H Shah
- Department of Physics, Faculty of Basic and Applied Sciences, International Islamic University, H-10, Islamabad, Pakistan
| | - Rajwali Khan
- Department of Physics, University of Lakki Marwat, Lakki Marwat, KP, 28420, Pakistan
| | | | - Ryan Casin
- School of Public Health, University of California, Berkeley, 2121 Berkeley Way, Berkeley, CA, 94704, USA
| | - Mohamed A Rashwan
- Department of Agricultural Engineering, College of Food and Agriculture Sciences, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Hosam O Elansary
- Plant Production Department, College of Food and Agriculture Sciences, King Saud University, 11451, Riyadh, Saudi Arabia.
| | - Attaullah Shah
- National Institute of Lasers and Optoelectronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan.
| |
Collapse
|
8
|
DeMarco M, Ballard M, Grage E, Nourigheimasi F, Getter L, Shafiee A, Ghadiri E. Enhanced photochemical activity and ultrafast photocarrier dynamics in sustainable synthetic melanin nanoparticle-based donor-acceptor inkjet-printed molecular junctions. NANOSCALE 2023; 15:14346-14364. [PMID: 37602764 DOI: 10.1039/d3nr02387g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Melanin is a stable, widely light-absorbing, photoactive, and biocompatible material viable for energy conversion, photocatalysis, and bioelectronic applications. To achieve multifunctional nanostructures, we synthesized melanin nanoparticles of uniform size and controlled chemical composition (dopamelanin and eumelanin) and used them with titanium dioxide to fabricate donor-acceptor bilayers. Their size enhances the surface-to-volume ratio important for any surface-mediated functionality, such as photocatalysis, sensing, and drug loading and release, while controlling their chemical composition enables to control the film's functionality and reproducibility. Inkjet printing uniquely allowed us to control the deposited amount of materials with minimum ink waste suitable for reproducible materials deposition. We studied the photochemical characteristics of the donor-acceptor melanin-TiO2 nanostructured films via photocatalytic degradation of methylene blue dye under selective UV-NIR and Vis-NIR irradiation conditions. Under both irradiation conditions, they exhibited photocatalytic characteristics superior to pure melanin and, under UV-NIR irradiation, superior to TiO2 alone; TiO2 is photoactive only under UV irradiation. The enhanced photocatalytic characteristics of the melanin-TiO2 nanostructured bilayer films, particularly when excited by visible light, point to charge separation at the melanin-TiO2 interface as a possible mechanism. We performed ultrafast laser spectroscopy to investigate the photochemical characteristics of pure melanin and the melanin-TiO2 constructs and found that their time-resolved photoexcited spectral patterns differ. We performed singular value decomposition analysis to quantitatively deconvolute and compare the dynamics of photochemical processes for melanin and melanin-TiO2 heterostructures. This observation supports electronic interactions, namely, interfacial charge separation at the melanin and TiO2 interface. The excited-state relaxation in melanin-TiO2 increases markedly from 5 ps to 400 ps. The results are remarkable for the future intriguing application of melanin-based constructs for bioelectronics and energy conversion.
Collapse
Affiliation(s)
- Max DeMarco
- Chemistry Department, Wake Forest University, USA.
- Center for Functional Materials, Wake Forest University, USA
| | - Matthew Ballard
- Chemistry Department, Wake Forest University, USA.
- Center for Functional Materials, Wake Forest University, USA
| | - Elinor Grage
- Chemistry Department, Wake Forest University, USA.
- Center for Functional Materials, Wake Forest University, USA
| | - Farnoush Nourigheimasi
- Chemistry Department, Wake Forest University, USA.
- Center for Functional Materials, Wake Forest University, USA
| | - Lillian Getter
- Chemistry Department, Wake Forest University, USA.
- Center for Functional Materials, Wake Forest University, USA
| | - Ashkan Shafiee
- Wake Forest School of Medicine, Wake Forest University, USA
- Center for Functional Materials, Wake Forest University, USA
| | - Elham Ghadiri
- Chemistry Department, Wake Forest University, USA.
- Wake Forest School of Medicine, Wake Forest University, USA
- Center for Functional Materials, Wake Forest University, USA
| |
Collapse
|
9
|
Gomes BR, Lopes JL, Coelho L, Ligonzo M, Rigoletto M, Magnacca G, Deganello F. Development and Upscaling of SiO 2@TiO 2 Core-Shell Nanoparticles for Methylene Blue Removal. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2276. [PMID: 37630862 PMCID: PMC10458987 DOI: 10.3390/nano13162276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023]
Abstract
SiO2@TiO2 core-shell nanoparticles were successfully synthesized via a simple, reproducible, and low-cost method and tested for methylene blue adsorption and UV photodegradation, with a view to their application in wastewater treatment. The monodisperse SiO2 core was obtained by the classical Stöber method and then coated with a thin layer of TiO2, followed by calcination or hydrothermal treatments. The properties of SiO2@TiO2 core-shell NPs resulted from the synergy between the photocatalytic properties of TiO2 and the adsorptive properties of SiO2. The synthesized NPs were characterized using FT-IR spectroscopy, HR-TEM, FE-SEM, and EDS. Zeta potential, specific surface area, and porosity were also determined. The results show that the synthesized SiO2@TiO2 NPs that are hydrothermally treated have similar behaviors and properties regardless of the hydrothermal treatment type and synthesis scale and better performance compared to the SiO2@TiO2 calcined and TiO2 reference samples. The generation of reactive species was determined by EPR, and the photocatalytic activity was evaluated by the methylene blue (MB) removal in aqueous solution under UV light. Hydrothermally treated SiO2@TiO2 showed the highest adsorption capacity and photocatalytic removal of almost 100% of MB after 15 min in UV light, 55 and 89% higher compared to SiO2 and TiO2 reference samples, respectively, while the SiO2@TiO2 calcined sample showed 80%. It was also observed that the SiO2-containing samples showed a considerable adsorption capacity compared to the TiO2 reference sample, which improved the MB removal. These results demonstrate the efficient synergy effect between SiO2 and TiO2, which enhances both the adsorption and photocatalytic properties of the nanomaterial. A possible photocatalytic mechanism was also proposed. Also noteworthy is that the performance of the upscaled HT1 sample was similar to one of the lab-scale synthesized samples, demonstrating the potentiality of this synthesis methodology in producing candidate nanomaterials for the removal of contaminants from wastewater.
Collapse
Affiliation(s)
- Bárbara R. Gomes
- CeNTItvc—Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal; (B.R.G.); (J.L.L.)
| | - Joana L. Lopes
- CeNTItvc—Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal; (B.R.G.); (J.L.L.)
| | - Lorena Coelho
- CeNTItvc—Centre for Nanotechnology and Smart Materials, Vila Nova de Famalicão 4760-034, Portugal; (B.R.G.); (J.L.L.)
| | - Mattia Ligonzo
- Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy; (M.L.); (M.R.); (G.M.)
| | - Monica Rigoletto
- Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy; (M.L.); (M.R.); (G.M.)
| | - Giuliana Magnacca
- Dipartimento di Chimica, Università degli Studi di Torino (UNITO), Via Pietro Giuria 7, 10124 Torino, Italy; (M.L.); (M.R.); (G.M.)
- NIS Interdepartmental Centre, Università degli Studi di Torino, Via Pietro Giuria 7, 10124 Torino, Italy
| | - Francesca Deganello
- Consiglio Nazionale delle Ricerche (CNR) Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), Via Ugo La Malfa 153, 90146 Palermo, Italy;
| |
Collapse
|
10
|
Mubeen K, Irshad A, Safeen A, Aziz U, Safeen K, Ghani T, Khan K, Ali Z, ul Haq I, Shah A. Band Structure Tuning of ZnO/CuO Composites for Enhanced Photocatalytic Activity. JOURNAL OF SAUDI CHEMICAL SOCIETY 2023. [DOI: 10.1016/j.jscs.2023.101639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
|
11
|
Cervantes-Diaz KB, Drobek M, Julbe A, Cambedouzou J. SiC Foams for the Photocatalytic Degradation of Methylene Blue under Visible Light Irradiation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1328. [PMID: 36836960 PMCID: PMC9959366 DOI: 10.3390/ma16041328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
SiC foams were synthesized by impregnating preceramic polymer into polyurethane foam templates, resulting in a photo-catalytically active material for the degradation of methylene blue. The crystalline structure, electronic properties, and photocatalytic performance of the SiC foams were characterized using a series of experimental techniques, including X-ray diffraction, electron microscopy, energy dispersive X-ray spectroscopy, N2 physisorption measurements, UV-visible spectroscopy, and methylene blue photodegradation tests. The original polyurethane template's microporous structure was maintained during the formation of the SiC foam, while additional mesopores were introduced by the porogen moieties added to the preceramic polymers. The prepared SiC-based photocatalyst showed attractive photocatalytic activity under visible light irradiation. This structured and reactive material offers good potential for application as a catalytic contactor or membrane reactor for the semi-continuous treatment of contaminated waste waters in ambient conditions.
Collapse
Affiliation(s)
| | | | | | - Julien Cambedouzou
- Institut Européen des Membranes (IEM), Univ Montpellier, CNRS, ENSCM, Place Eugene Bataillon, 34095 Montpellier, France
| |
Collapse
|
12
|
Kulis-Kapuscinska A, Kwoka M, Borysiewicz MA, Wojciechowski T, Licciardello N, Sgarzi M, Cuniberti G. Photocatalytic degradation of methylene blue at nanostructured ZnO thin films. NANOTECHNOLOGY 2023; 34:155702. [PMID: 36595265 DOI: 10.1088/1361-6528/aca910] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
The photocatalytic degradation of the wastewater dye pollutant methylene blue (MB) at ZnO nanostructured porous thin films, deposited by direct current reactive magnetron sputtering on Si substrates, was studied. It was observed that over 4 photocatalytic cycles (0.3 mg · l-1MB solution, 540 minUV irradiation), the rate constantkof MB degradation decreased by ∼50%, varying in the range (1.54 ÷ 0.78) · 10-9(mol·l-1·min-1). For a deeper analysis of the photodegradation mechanism, detailed information on the nanostructured ZnO surface morphology and local surface and subsurface chemistry (nonstoichiometry) were obtained by using scanning electron microscopy (SEM) and x-ray photoelectron spectroscopy (XPS) as complementary analytical methods. The SEM studies revealed that at the surface of the nanostructured ZnO thin films a coral reef structure containing polycrystalline coral dendrites is present, and that, after the photocatalytic experiments, the sizes of individual crystallites increased, varying in the range 43 ÷ 76 nm for the longer axis, and in the range 28 ÷ 58 nm for the shorter axis. In turn, the XPS studies showed a slight non-stoichiometry, mainly defined by the relative [O]/[Zn] concentration of ca. 1.4, whereas [C]/[Zn] was ca. 1.2, both before and after the photocatalytic experiments. This phenomenon was directly related to the presence of superficial ZnO lattice oxygen atoms that can participate in the oxidation of the adsorbed MB molecules, as well as to the presence of surface hydroxyl groups acting as hole-acceptors to produce OH· radicals, which can be responsible for the generation of superoxide ions. In addition, after experiments, the XPS measurements revealed the presence of carboxyl and carbonyl functional groups, ascribable to the oxidation by-products formed during the photodegradation of MB.
Collapse
Affiliation(s)
- Anna Kulis-Kapuscinska
- Department of Cybernetics, Nanotechnology and Data Processing, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Monika Kwoka
- Department of Cybernetics, Nanotechnology and Data Processing, Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Michal Adam Borysiewicz
- Łukasiewicz Research Network-Institute of Microelectronics and Photonics, Aleja Lotników 32/46, 02-668 Warsaw, Poland
| | - Tomasz Wojciechowski
- International Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland
| | - Nadia Licciardello
- Institute for Materials Science, Max Bergmann Centre of Biomaterials and Dresden Center for Nanoanalysis, TU Dresden, D-01062, Dresden, Germany
| | - Massimo Sgarzi
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, I-30172 Venezia Mestre, Italy
| | - Gianaurelio Cuniberti
- Institute for Materials Science, Max Bergmann Centre of Biomaterials and Dresden Center for Nanoanalysis, TU Dresden, D-01062, Dresden, Germany
| |
Collapse
|
13
|
Zhang X, Yuan N, Chen T, Li B, Wang Q. Fabrication of hydrangea-shaped Bi 2WO 6/ZIF-8 visible-light responsive photocatalysts for degradation of methylene blue. CHEMOSPHERE 2022; 307:135949. [PMID: 35961452 DOI: 10.1016/j.chemosphere.2022.135949] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/30/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
In this paper, the hydrangea-shaped Bi2WO6/ZIF-8 (BWOZ) visible light photocatalysts have been prepared via a facile synthetic strategy for the first time. The constructed BWOZ composites were systematically studied by a series of characterization techniques. The SEM results manifested the octahedral ZIF-8 coated the flower-like Bi2WO6 uniformly and the composition of BWOZ composites had been confirmed by XPS measurement. And the photocatalytic activity was evaluated by eliminating methylene blue with the help of visible light. The results showed that 7%-BWOZ (7.0 wt% Bi2WO6) exhibited better photodegradation capability than pure Bi2WO6 and ZIF-8. Compared with Bi2WO6, the photocatalytic degradation of methylene blue by 7%-BWOZ could reach 85.7%. In addition, the pseudo-first-order kinetic constant of 7%-BWOZ was 23.00 and 1.61 times that of pristine Bi2WO6 and ZIF-8, respectively. The improved photocatalytic ability of BWOZ systems may be due to the construction of heterojunctions between Bi2WO6 and ZIF-8, which resulted in the rapid separation of photogenerated carriers. Additionally, the specific surface area of the formed BWOZ system was also improved in comparison with the flower-shaped Bi2WO6, and thus more active sites could be provided to contact with methylene blue molecules, thereby achieving better removal capacity. Moreover, trapping experiments and electron spin resonance results further illustrated that the coexistence of multiple free radicals realized efficient degradation of methylene blue. More importantly, the photocatalytic property of the 7%-BWOZ composite remained even after three cycles. Furthermore, a feasible photodegradation mechanism was also explored in depth.
Collapse
Affiliation(s)
- Xinling Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Ning Yuan
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China.
| | - Tianxiang Chen
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Bowen Li
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Qibao Wang
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| |
Collapse
|
14
|
Dynamics of Diffusion- and Immobilization-Limited Photocatalytic Degradation of Dyes by Metal Oxide Nanoparticles in Binary or Ternary Solutions. Catalysts 2022. [DOI: 10.3390/catal12101254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Photocatalytic degradation employing metal oxides, such as TiO2 nanoparticles, as catalysts is an important technique for the removal of synthetic dyes from wastewater under light irradiation. The basic principles of photocatalysis of dyes, the effects of the intrinsic photoactivity of a catalyst, and the conventional non-fundamental factors are well established. Recently reported photocatalysis studies of dyes in single, binary, and ternary solute solutions opened up a new perspective on competitive photocatalytic degradation of the dyes. There has not been a review on the photocatalytic behavior of binary or ternary solutions of dyes. In this regard, this current review article summarizes the photocatalytic behavior of methylene, rhodamine B, and methyl orange in their binary or ternary solutions. This brief overview introduces the importance of the dynamics of immobilization and reactivity of the dyes, the vital roles of molecular conformation and functional groups on their diffusion onto the catalyst surface, and photocatalytic degradation, and provides an understanding of the simultaneous photocatalytic processes of multiple dyes in aqueous systems.
Collapse
|
15
|
Sakshi, Khullar S. Anion-directed structural diversification in four new Cd(II) compounds of a flexible polyether-based dicarboxylic acid. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
16
|
Choi MJ, Hwang YJ, Pyun SB, Kim JH, Kim JY, Hong W, Park JY, Kwak J, Cho EC. Reaction-Based Scalable Inorganic Patterning on Rigid and Soft Substrates for Photovoltaic Roofs with Minimal Optical Loss and Sustainable Sunlight-Driven-Cleaning Windows. ACS APPLIED MATERIALS & INTERFACES 2022; 14:38339-38350. [PMID: 35968862 DOI: 10.1021/acsami.2c09145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Recently developed fabrication methods for inorganic patterns (such as laser printing and optical lithography) can avoid some patterning processes conducted by conventional etching and lithography (such as substrate etching and modulation) and are thereby useful for applications in which the substrates and materials must not be damaged during patterning. Simultaneously, it is also necessary to develop facile and economical methods producing inorganic patterns on various substrates without requiring a special apparatus while attaining the above-mentioned advantages. The present study proposes a reaction-based method for fabricating inorganic patterns by immersing substrates coated with a colloidal nanosheet into an aqueous solution containing inorganic precursors. Silica and TiO2 patterns spontaneously developed during the conversion of each inorganic precursor. These patterns were successful on rigid and flexible substrates. We fabricated these patterns on a wafer-sized silicon and large flexible poly(ethylene terephthalate) film, suggesting the scalability. We fabricated a biomimetic pattern on both sides of a glass window, as a photovoltaic roof, for minimal optical losses to maximally present photovoltaic effects of a solar cell. The TiO2 pattern on glass window exhibits sustainable sunlight-driven-cleaning activity for contaminants. The method could provide a platform for economical high-performance inorganic patterns for energy, environmental, electronics, and other areas.
Collapse
Affiliation(s)
- Min Ju Choi
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Young Ji Hwang
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Seung Beom Pyun
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jeong Han Kim
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jung Yeon Kim
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Woongpyo Hong
- Materials Research and Engineering Center, Hyundai Motor Company, 37 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16082, Republic of Korea
| | - Jung-Yeon Park
- Materials Research and Engineering Center, Hyundai Motor Company, 37 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16082, Republic of Korea
| | - Jinwoo Kwak
- Materials Research and Engineering Center, Hyundai Motor Company, 37 Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do 16082, Republic of Korea
| | - Eun Chul Cho
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| |
Collapse
|
17
|
Khan S, Sadiq M, Muhammad N. Enhanced photocatalytic potential of TiO 2 nanoparticles in coupled CdTiO 2 and ZnCdTiO 2 nanocomposites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:54745-54755. [PMID: 35304723 DOI: 10.1007/s11356-022-19807-6] [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: 06/15/2021] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Photodegradation of organic pollutants is the most suitable and cheaper technique to counter decontamination issues. Among the metal-based nanoparticles, TiO2 is considered to be the most effective heterogeneous photocatalyst for the photodegradation of organic pollutants. However, the large band gap and the high electron-hole pair recombination rate limit its practical applications. Herein, an approach was introduced to minimize the mentioned limitations by preparing CdTiO2 and ZnCdTiO2 nanocomposites by co-precipitation method. The as-synthesized TiO2, CdTiO2, and ZnCdTiO2 were characterized by scanning electron microscopy, transmission electron microscopy (TEM), energy dispersive X-ray, X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and UV-visible spectrophotometry. Morphological analysis revealed that TiO2 are mostly agglomerated with different shapes and sizes and the nanocomposites are mostly in dispersed form. The components of the nanocomposites are strongly intercalated in the ternary nanocomposite as confirmed from TEM analysis. XRD analysis confirmed the anatase TiO2 while the UV-visible analysis showed the shifting toward higher wavelength. The band gap energy of TiO2 (2.65) decreased to 2.6 and 2.56 eV for CdTiO2 and ZnCdTiO2, respectively. BET analysis has shown a 47.2 m2/g surface area for the ternary ZnCdTiO2 nanocomposite. The photodegradation results revealed that TiO2, CdTiO2, and ZnCdTiO2 degraded about 74%, 86%, and 97.61% methylene blue dye, respectively, within 2 h. Maximum photodegradation is achieved in the basic medium and the ternary ZnCdTiO2 nanocomposite degraded 98% dye at pH 10.
Collapse
Affiliation(s)
- Shakeel Khan
- Department of Chemistry, Abdul Wali Khan University, Mardan, Pakistan
| | - Muhammad Sadiq
- Department of Chemistry, University of Malakand, Chakdara, Dir (Lower), Pakistan
| | - Niaz Muhammad
- Department of Chemistry, Abdul Wali Khan University, Mardan, Pakistan.
| |
Collapse
|
18
|
Khan J, Tahir K, Wei Y, Albalawi K, Latif S, Abdulaziz F, El-Zahhar AA, Abdu Musad Saleh E, Al-Shehri HS, Alghamdi MM. Preparation of Ca0.1Cu0.90Bi2O4 heterojunction with improved visible light photocatalytic performance of congo red: Kinetics and degradation mechanisms. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
19
|
Rodríguez-Ibarra C, Medina-Reyes EI, Déciga-Alcaraz A, Delgado-Buenrostro NL, Quezada-Maldonado EM, Ispanixtlahuatl-Meráz O, Ganem-Rondero A, Flores-Flores JO, Vázquez-Zapién GJ, Mata-Miranda MM, López-Marure R, Pedraza-Chaverri J, García-Cuéllar CM, Sánchez-Pérez Y, Chirino YI. Food grade titanium dioxide accumulation leads to cellular alterations in colon cells after removal of a 24-hour exposure. Toxicology 2022; 478:153280. [PMID: 35973603 DOI: 10.1016/j.tox.2022.153280] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/26/2022] [Accepted: 07/30/2022] [Indexed: 10/15/2022]
Abstract
Titanium dioxide food grade (E171) is one of the most used food additives containing nanoparticles. Recently, the European Food Safety Authority indicated that E171 could no longer be considered safe as a food additive due to the possibility of it being genotoxic and there is evidence that E171 administration exacerbates colon tumor formation in murine models. However, less is known about the effects of E171 accumulation once the exposure stopped, then we hypothesized that toxic effects could be detected even after E171 removal. Therefore, we investigated the effects of E171 exposure after being removed from colon cell cultures. Human colon cancer cell line (HCT116) was exposed to 0, 1, 10 and 50 μg/cm2 of E171. Our results showed that in the absence of cytotoxicity, E171 was accumulated in the cells after 24 of exposure, increasing granularity and reactive oxygen species, inducing alterations in the molecular pattern of nucleic acids and lipids, and causing nuclei enlargement, DNA damage and tubulin depolymerization. After the removal of E171, colon cells were cultured for 48 h more hours to analyze the ability to restore the previously detected alterations. As we hypothesized, the removal of E171 was unable to revert the alterations found after 24 h of exposure in colon cells. In conclusion, exposure to E171 causes alterations that cannot be reverted after 48 h if E171 is removed from colon cells.
Collapse
Affiliation(s)
- Carolina Rodríguez-Ibarra
- Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla de Baz CP 54090, Estado de México, Mexico
| | - Estefany I Medina-Reyes
- Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla de Baz CP 54090, Estado de México, Mexico
| | - Alejandro Déciga-Alcaraz
- Atmospheric Organic Aerosol Chemical Speciation Group, Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, AP 70228, Ciudad de México 04510, Mexico
| | - Norma Laura Delgado-Buenrostro
- Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla de Baz CP 54090, Estado de México, Mexico
| | - Ericka Marel Quezada-Maldonado
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, San Fernando No. 22, CP 14080 Ciudad de México, Tlalpan, Mexico
| | - Octavio Ispanixtlahuatl-Meráz
- Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla de Baz CP 54090, Estado de México, Mexico
| | - Adriana Ganem-Rondero
- División de Estudios de Posgrado (Tecnología Farmacéutica), Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Av. 1° de Mayo s/n, Cuautitlán Izcalli CP 54740, Estado de México, Mexico
| | - José Ocotlán Flores-Flores
- Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Ciudad Universitaria, CP 04510 Ciudad de México, Mexico
| | - Gustavo J Vázquez-Zapién
- Laboratorio de Embriología, Escuela Militar de Medicina, Centro Militar de Ciencias de la Salud, Secretaría de la Defensa Nacional, Cerrada de Palomas S/N, Lomas de San Isidro, Alcaldía Miguel Hidalgo, CP 11200 Ciudad de México, Mexico
| | - Mónica M Mata-Miranda
- Laboratorio de Biología Celular y Tisular, Escuela Militar de Medicina, Centro Militar de Ciencias de la Salud, Secretaría de la Defensa Nacional, Cerrada de Palomas S/N, Lomas de San Isidro, Alcaldía Miguel Hidalgo, CP 11200 Ciudad de México, Mexico
| | - Rebeca López-Marure
- Departamento de Fisiología, Instituto Nacional de Cardiología "Ignacio Chávez", Ciudad de México, Mexico
| | - José Pedraza-Chaverri
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, CP 04510 Ciudad de México, Mexico
| | - Claudia M García-Cuéllar
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, San Fernando No. 22, CP 14080 Ciudad de México, Tlalpan, Mexico
| | - Yesennia Sánchez-Pérez
- Subdirección de Investigación Básica, Instituto Nacional de Cancerología, San Fernando No. 22, CP 14080 Ciudad de México, Tlalpan, Mexico
| | - Yolanda I Chirino
- Laboratorio de Carcinogénesis y Toxicología, Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Av. de los Barrios No. 1, Los Reyes Iztacala, Tlalnepantla de Baz CP 54090, Estado de México, Mexico.
| |
Collapse
|
20
|
Aleisa R, Feng J, Ye Z, Yin Y. Rapid High‐Contrast Photoreversible Coloration of Surface‐Functionalized N‐Doped TiO
2
Nanocrystals for Rewritable Light‐Printing. Angew Chem Int Ed Engl 2022; 61:e202203700. [DOI: 10.1002/anie.202203700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Rashed Aleisa
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| | - Ji Feng
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| | - Zuyang Ye
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| | - Yadong Yin
- Department of Chemistry University of California, Riverside Riverside CA 92521 USA
| |
Collapse
|
21
|
Iwamiya Y, Nishio-Hamane D, Akutsu-Suyama K, Arima-Osonoi H, Shibayama M, Hiroi Z. Photocatalytic Silica–Resin Coating for Environmental Protection of Paper as a Plastic Substitute. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yoko Iwamiya
- Choetsu Kaken Co., Ltd., Suehiro, Tsurumi, Yokohama, Kanagawa 230-0045, Japan
| | - Daisuke Nishio-Hamane
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Kazuhiro Akutsu-Suyama
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society, Tokai, Ibaraki 319-1106, Japan
| | - Hiroshi Arima-Osonoi
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society, Tokai, Ibaraki 319-1106, Japan
| | - Mitsuhiro Shibayama
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society, Tokai, Ibaraki 319-1106, Japan
| | - Zenji Hiroi
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| |
Collapse
|
22
|
Ni-Doped Ordered Nanoporous Carbon Prepared from Chestnut Wood Tannins for the Removal and Photocatalytic Degradation of Methylene Blue. NANOMATERIALS 2022; 12:nano12101625. [PMID: 35630848 PMCID: PMC9145437 DOI: 10.3390/nano12101625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 02/04/2023]
Abstract
In this work, Ni-doped ordered nanoporous carbon was prepared by a simple and green one-pot solvent evaporation induced self-assembly process, where chestnut wood tannins were used as a precursor, Pluronic® F-127 as a soft template, and Ni2+ as a crosslinking agent and catalytic component. The prepared carbon exhibited a 2D hexagonally ordered nanorod array mesoporous structure with an average pore diameter of ~5 nm. Nickel was found to be present on the surface of nanoporous carbon in the form of nickel oxide, nickel hydroxide, and metallic nickel. Nickel nanoparticles, with an average size of 13.1 nm, were well dispersed on the carbon surface. The synthesized carbon was then tested for the removal of methylene blue under different conditions. It was found that the amount of methylene blue removed increased with increasing pH and concentration of carbon but decreased with increasing concentration of methylene blue. Furthermore, photocatalytic tests carried out under visible light illumination showed that purple light had the greatest effect on the methylene blue adsorption/degradation, with the maximum percent degradation achieved at ~4 h illumination time, and that the percent degradation at lower concentrations of methylene blue was much higher than that at higher concentrations. The adsorption/degradation process exhibited pseudo second-order kinetics and strong initial adsorption, and the prepared carbon showed high magnetic properties and good recyclability.
Collapse
|
23
|
Aleisa R, Feng J, Ye Z, Yin Y. Rapid High‐contrast Photoreversible Coloration of Surface‐functionalized N‐doped TiO2 Nanocrystals for Rewritable Light‐Printing. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203700] [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)
- Rashed Aleisa
- University of California Riverside Chemistry UNITED STATES
| | - Ji Feng
- University of California Riverside Chemistry UNITED STATES
| | - Zuyang Ye
- University of California Riverside Chemistry UNITED STATES
| | - Yadong Yin
- University of California Riverside Chemistry Pierce Hall Annex Room 302 92521 Riverside UNITED STATES
| |
Collapse
|
24
|
Ranjbar-Mohammadi M, Yousefi E. Fabrication of a dye removal system through electrospun of TiO2/Nylon-6 nanocomposite on three-dimensional spacer fabrics. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03645-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
25
|
Lalliansanga, Tiwari D, Tiwari A, Shukla A, Shim MJ, Lee SM. Facile synthesis and characterization of Ag(NP)/TiO2 nanocomposite: Photocatalytic efficiency of catalyst for oxidative removal of Alizarin Yellow. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.09.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
26
|
Refat MS, Saad HA, Gobouri AA, Alsawat M, Adam AMA, Shakya S, Gaber A, Mohammed Alsuhaibani A, El-Megharbel SM. Synthesis and spectroscopic characterizations of nanostructured charge transfer complexes associated between moxifloxacin drug donor and metal chloride acceptors as a catalytic agent in a recycling of wastewater. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118121] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
27
|
Girija R, Mary S, Balakrishnan G, Mariappan SM, Hamdy MS, Shkir M. Noticeably Improved Visible Light Photocatalytic Activity of TiO
2
Nanoparticles through co‐Doping of Activated Charcoal and Fe Towards Methylene Blue Degradation. ChemistrySelect 2022. [DOI: 10.1002/slct.202103614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ramanujam Girija
- Department of Physics St. Peter's Institute of Higher Education and Research Chennai-54 Tamilnadu India
| | - Stella Mary
- Department of Physics St. Peter's Institute of Higher Education and Research Chennai-54 Tamilnadu India
| | - G. Balakrishnan
- Department of Physics Bharath Institute of Science and Technology Bharath Institute of Higher Education and Research Chennai 73 Tamilnadu India
| | - Sivalingam M. Mariappan
- Department of Physics St. Peter's Institute of Higher Education and Research Chennai-54 Tamilnadu India
| | - Mohamed S. Hamdy
- Department of Chemistry College of science King Saud University Riyadh 11451 Saudi Arabia
| | - Mohd. Shkir
- Advanced Functional Materials & Optoelectronics Laboratory Department of Physics College of Science King Khalid University Abha 61413 Saudi Arabia
| |
Collapse
|
28
|
Sahoo D, Shakya J, Ali N, Yoo WJ, Kaviraj B. Edge Rich Ultrathin Layered MoS 2 Nanostructures for Superior Visible Light Photocatalytic Activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:1578-1588. [PMID: 35072482 DOI: 10.1021/acs.langmuir.1c03013] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nanostructures of layered 2D materials have been proven one of the significant recent trends for visible-light-driven photocatalysis because of their unique morphology, effective optical adsorption, and rich active sites. Herein, we synthesized ultrathin-layered MoS2 nanoflowers and nanosheets with rich active sites by using a facile hydrothermal technique. The photocatalytic performance of the as-synthesized MoS2 nanoflowers (NF) and nanosheets (NS) were investigated for the photodegradation of MB (methylene blue), MG (malachite Green), and RhB (rhodamine B) dye under visible light irradiations. Ultrathin-layered nanoflowers showed faster degradation (96% in 150 min) in RhB under visible light irradiation, probably due to a large number of active sites and high available surface area. The kinetic study demonstrated that the first-order kinetic model best explained the process of photodegradation. The MoS2 nanoflowers catalysts has similar catalytic performance after four consecutive cyclic performances, demonstrating their good stability. The results showed that the MoS2 nanoflowers have outstanding visible-light-driven photocatalytic activity and could be an effective catalyst for industrial wastewater treatment.
Collapse
Affiliation(s)
- Dhirendra Sahoo
- Department of Physics, School of Natural Sciences, Shiv Nadar University, NH-91, Greater Noida, Gautam Budha Nagar, Uttar Pradesh 201314, India
| | - Jyoti Shakya
- Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | - Nasir Ali
- SKKU Advanced Institute of Nano-Technology (SAINT), Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea
| | - Won Jong Yoo
- SKKU Advanced Institute of Nano-Technology (SAINT), Sungkyunkwan University 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Korea
| | - Bhaskar Kaviraj
- Department of Physics, School of Natural Sciences, Shiv Nadar University, NH-91, Greater Noida, Gautam Budha Nagar, Uttar Pradesh 201314, India
| |
Collapse
|
29
|
Reguera J, Zheng F, Shalan AE, Lizundia E. Upcycling discarded cellulosic surgical masks into catalytically active freestanding materials. CELLULOSE (LONDON, ENGLAND) 2022; 29:2223-2240. [PMID: 35125686 PMCID: PMC8805669 DOI: 10.1007/s10570-022-04441-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/14/2022] [Indexed: 05/14/2023]
Abstract
ABSTRACT The COVID-19 pandemic outbreak has resulted in the massive fabrication of disposable surgical masks. As the accumulation of discarded face masks represents a booming threat to the environment, here we propose a solution to reuse and upcycle surgical masks according to one of the cornerstones of the circular economy. Specifically, the non-woven cellulosic layer of the masks is used as an environmentally sustainable and highly porous solid support for the controlled deposition of catalytically active metal-oxide nanoparticles. The native cellulosic fibers from the surgical masks are decorated by titanium dioxide (TiO2), iron oxide (FexOy), and cobalt oxide (CoOx) nanoparticles following a simple and scalable approach. The abundant surface -OH groups of cellulose enable the controlled deposition of metal-oxide nanoparticles that are photocatalytically active or shown enzyme-mimetic activities. Importantly, the hydrophilic highly porous character of the cellulosic non-woven offers higher accessibility of the pollutant to the catalytically active surfaces and high retention in its interior. As a result, good catalytic activities with long-term stability and reusability are achieved. Additionally, developed free-standing hybrids avoid undesired media contamination effects originating from the release of nanoscale particles. The upcycling of discarded cellulosic materials, such as the ones of masks, into high-added-value catalytic materials, results an efficient approach to lessen the waste´s hazards of plastics while enhancing their functionality. Interestingly, this procedure can be extended to the upcycling of other systems (cellulosic or not), opening the path to greener manufacturing approaches of catalytic materials. GRAPHICAL ABSTRACT A novel approach to upcycle discarded cellulosic surgical masks is proposed, providing a solution to reduce the undesired accumulation of discarded face masks originating from the COVID-19 pandemic. The non-woven cellulosic layer formed by fibers is used as solid support for the controlled deposition of catalytically active titanium dioxide (TiO2), iron oxide (FexOy), and cobalt oxide (CoOx) nanoparticles. Cellulosic porous materials are proven useful for the photocatalytic decomposition of organic dyes, while their peroxidase-like activity opens the door to advanced applications such as electrochemical sensors. The upcycling of cellulose nonwoven fabrics into value-added catalytic materials lessens the waste´s hazards of discarded materials while enhancing their functionality. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10570-022-04441-9.
Collapse
Affiliation(s)
- Javier Reguera
- BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Fangyuan Zheng
- BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
| | - Ahmed Esmail Shalan
- BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, Egypt
| | - Erlantz Lizundia
- BCMaterials, Basque Center for Materials, Applications, and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain
- Life Cycle Thinking Group, Department of Graphic Design and Engineering Projects, Faculty of Engineering in Bilbao, University of the Basque Country (UPV/EHU), 48013 Bilbao, Spain
| |
Collapse
|
30
|
Heterogeneous Photocatalytic Chlorination of Methylene Blue Using a Newly Synthesized TiO2-SiO2 Photocatalyst. Catalysts 2022. [DOI: 10.3390/catal12020156] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The titanium dioxide-silicon dioxide (TiO2-SiO2) nanocomposite used for the study was synthesized using a sol-gel method followed by UV-treatment. The physicochemical properties of the synthesized catalyst, TiO2-SiO2 were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS) and photoluminescence (PL). The photocatalytic degradation of methylene blue (MB) dye was evaluated in the presence of TiO2-SiO2 and reactive chlorine species (RCS) under experimental conditions. By comparing the important reaction processes in the study, including photocatalysis, chlorination and photocatalytic chlorination, it was found out that the process of photocatalytic chlorination had the highest photodegradation efficiency (95% at 60 min) of the MB under optimum reaction conditions (MB = 6 mg L−1, catalyst = 0.1 g and pH = 4). The enhanced removal of MB from the aqueous medium was identified because of the synergy between chlorination and photocatalysis activated in the presence of TiO2-SiO2. The mechanism of the photocatalytic chlorination process was scrutinized in the presence of various RCS and reactive oxygen species (ROS) scavengers. Based on the experimental data attained, Na2S2O3 exhibited the highest inhibitory effect on the degradation efficiency of MB, indicating that the RCS is the main contributor to visible light-induced photodegradation of MB.
Collapse
|
31
|
Abstract
The unavailability of clean drinking water is one of the significant health issues in modern times. Industrial dyes are one of the dominant chemicals that make water unfit for drinking. Among these dyes, methylene blue (MB) is toxic, carcinogenic, and non-biodegradable and can cause a severe threat to human health and environmental safety. It is usually released in natural water sources, which becomes a health threat to human beings and living organisms. Hence, there is a need to develop an environmentally friendly, efficient technology for removing MB from wastewater. Photodegradation is an advanced oxidation process widely used for MB removal. It has the advantages of complete mineralization of dye into simple and nontoxic species with the potential to decrease the processing cost. This review provides a tutorial basis for the readers working in the dye degradation research area. We not only covered the basic principles of the process but also provided a wide range of previously published work on advanced photocatalytic systems (single-component and multi-component photocatalysts). Our study has focused on critical parameters that can affect the photodegradation rate of MB, such as photocatalyst type and loading, irradiation reaction time, pH of reaction media, initial concentration of dye, radical scavengers and oxidising agents. The photodegradation mechanism, reaction pathways, intermediate products, and final products of MB are also summarized. An overview of the future perspectives to utilize MB at an industrial scale is also provided. This paper identifies strategies for the development of effective MB photodegradation systems.
Collapse
|
32
|
Santoso SP, Angkawijaya AE, Bundjaja V, Hsieh CW, Go AW, Yuliana M, Hsu HY, Tran-Nguyen PL, Soetaredjo FE, Ismadji S. TiO 2/guar gum hydrogel composite for adsorption and photodegradation of methylene blue. Int J Biol Macromol 2021; 193:721-733. [PMID: 34655594 DOI: 10.1016/j.ijbiomac.2021.10.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 12/25/2022]
Abstract
The development of porous adsorbent materials from renewable resources for water and wastewater treatment has received considerable interest from academia and industry. This work aims to synthesize composite hydrogel from the combination of guar gum (a neutral galactomannan polysaccharide) and TiO2. The TiO2-embedded guar gum hydrogel (TiO2@GGH) was utilized to remove methylene blue through adsorption and photodegradation. The presence of TiO2 particles in the hydrogel matrix (TiO2@GGH) was confirmed by scanning electron microscopy-energy dispersive X-ray and X-ray photoelectron spectroscopy analysis. The mercury intrusion and N2 sorption isotherm indicate the macroporous structure of the TiO2@GGH composite, showing the presence of pore sizes ~420 μm. The dye removal efficiency of the GGH and TiO2@GGH was evaluated in batch mode at ambient temperature under varying pH. The effect of UV radiation on the dye removal efficiency was also assessed. The results demonstrated that the highest dye removal was recorded at pH 10, with the equilibrium condition achieved within 5 h. UV radiation was shown to enhance dye removal. The maximum adsorption capacity of TiO2@GGH is 198.61 mg g-1, while GGH sorbent is 188.53 mg g-1. The results imply that UV radiation gives rise to the photodegradation effect.
Collapse
Affiliation(s)
- Shella Permatasari Santoso
- Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, Jl. Kalijudan No. 37, Surabaya 60114, East Java, Indonesia; Chemical Engineering Department, National Taiwan University of Science and Technology, #43 Keelung Rd., Sec. 4, Da'an Dist., Taipei 10607, Taiwan.
| | - Artik Elisa Angkawijaya
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, #43 Keelung Rd., Sec. 4, Da'an Dist., Taipei 10607, Taiwan
| | - Vania Bundjaja
- Chemical Engineering Department, National Taiwan University of Science and Technology, #43 Keelung Rd., Sec. 4, Da'an Dist., Taipei 10607, Taiwan
| | - Chang-Wei Hsieh
- Department of Food Science and Biotechnology, National Chung Hsing University, No. 145 Xingda Road, 402, South District, Taichung City, Taiwan
| | - Alchris Woo Go
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, #43 Keelung Rd., Sec. 4, Da'an Dist., Taipei 10607, Taiwan
| | - Maria Yuliana
- Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, Jl. Kalijudan No. 37, Surabaya 60114, East Java, Indonesia
| | - Hsien-Yi Hsu
- School of Energy and Environment, Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Ave, Kowloon Tong, Hong Kong, China; Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, China
| | - Phuong Lan Tran-Nguyen
- Mechanical Engineering Department, Can Tho University, 3/2 Street, Ninh Kieu Dist., Can Tho City, Viet Nam
| | - Felycia Edi Soetaredjo
- Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, Jl. Kalijudan No. 37, Surabaya 60114, East Java, Indonesia; Chemical Engineering Department, National Taiwan University of Science and Technology, #43 Keelung Rd., Sec. 4, Da'an Dist., Taipei 10607, Taiwan
| | - Suryadi Ismadji
- Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, Jl. Kalijudan No. 37, Surabaya 60114, East Java, Indonesia; Chemical Engineering Department, National Taiwan University of Science and Technology, #43 Keelung Rd., Sec. 4, Da'an Dist., Taipei 10607, Taiwan
| |
Collapse
|
33
|
Aleeva Y, Ferrara V, Bonasera A, Martino DC, Pignataro B. Superhydrophobic TiO2/fluorinated polysiloxane hybrid coatings with controlled morphology for solar photocatalysis. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
34
|
Immobilization of TiO2 Nanoparticles in Cement for Improved Photocatalytic Reactivity and Treatment of Organic Pollutants. Catalysts 2021. [DOI: 10.3390/catal11080938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Non-point organic pollutants in stormwater are a growing problem in the urban environment which lack effective and efficient treatment technologies. Incorporation of conventional wastewater techniques within stormwater management practices could fundamentally change how stormwater quality is managed because contaminants can be degraded during stormwater transport or storage. This study investigated the photocatalytic reactivity of titanium dioxide functionalized with maleic anhydride (Ti-MAH) within cement pastes when compared to ordinary Portland cement. Preparation of Ti-MAH was performed by permanently bonding maleic anhydride to titanium in methanol, drying and powdering the residual material, and then inter-grinding the preparation with cement during mixing. When compared with OPC, the Ti-MAH cured cement paste is more reactive under a wider range of light wavelengths, possesses a higher band gap, sustains this heightened reactivity over multiple testing iterations, and treats organics effectively (>95% methylene blue removal). Amorphous silica within calcium-silica-hydrate, C-S-H, is theorized to bond to the powdered Ti-MAH during curing. Verification of silicon bonding to the titanium by way of MAH was demonstrated by FTIR spectra, SEM imagery, and XRD. Creating a sustainable and passive photocatalytic cement that precisely bonds silica to Ti-MAH is useful for organic contaminants in urban stormwater, but use can translate to other applications because Ti-MAH bonds readily with any amorphous silica such as glass materials, paints and coatings, optics, and LEDS, among many others.
Collapse
|
35
|
Daigo K, Akama R, Unno N, Satake SI, Taniguchi J. Impact of Water Treatment Reactor using TiO<sub>2</sub>-coated Micropillar Made by UV-NIL. J PHOTOPOLYM SCI TEC 2021. [DOI: 10.2494/photopolymer.34.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kazuki Daigo
- Department of Applied Electronics, Tokyo University of Science
| | - Ryota Akama
- Department of Applied Electronics, Tokyo University of Science
| | - Noriyuki Unno
- Department of Mechanical Engineering, Sanyo-Onoda City University
| | | | - Jun Taniguchi
- Department of Applied Electronics, Tokyo University of Science
| |
Collapse
|
36
|
Iazdani F, Nezamzadeh-Ejhieh A. Photocatalytic kinetics of 2,4-dichloroaniline degradation by NiO-clinoptilolite nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119228. [PMID: 33257250 DOI: 10.1016/j.saa.2020.119228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/04/2020] [Accepted: 11/10/2020] [Indexed: 06/12/2023]
Abstract
The ball-mill clinoptilolite nanoparticles (CNP) was ion-exchanged in Ni(II) solutions and calcined to obtain NiO-CNP catalysts with various NiO loadings. The resultant CNP was ion-exchanged in 0.1, 0.2, 0.3, and 0.4 M Ni(II) solutions and then calcined at 450 °C. The resultant NiO-CNPs contained 1.9, 2.3, 3.0, and 3.2% NiO, respectively. The XRD, FTIR, and DRS characterization techniques were applied. By applying the Scherrer equation on the XRD results, the average crystallite size for the NiO-CNP samples was estimated in the range of 42-65 nm. The pHpzc of the NiO-CNP species was slightly changed from 6.8 to 7.6 by an increase in the loaded NiO. The band gap energy of the samples was calculated by applying the Kubelka-Munk equation on the DRS results. The band gap energies of 3.81, 4.05, and 3.63 eV were estimated for the direct electronic transitions of the CN2, CN2.3, and CN3.2 samples, respectively. The boosted photoactivity was obtained in 2,4-dichloroanilyne (DCA) degradation when NiO supported onto both micronized clinoptilolite and its nanoparticles. The effects of the most important experimental variables on DCA photodegradation rate were kinetically studied by applying the Hinshelwood model on the results. The faster rate for the DCA photodegradation was achieved at the optimal conditions, including the catalyst dose: 0.5 g/L, CDCA: 5 ppm, and the initial pH: 3. Some new peaks were observed in the HPLC chromatograms for the photodegraded DCA solutions after 180 min and 300 min, which showed 84% and 95% DCA photodegradation.
Collapse
Affiliation(s)
- Fereshteh Iazdani
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran
| | - Alireza Nezamzadeh-Ejhieh
- Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran; Young Researchers and Elite Club, Shahreza Branch, Islamic Azad University, Shahreza, Iran; Razi Chemistry Research Center (RCRC), Shahreza Branch, Islamic Azad University, Isfahan, Iran.
| |
Collapse
|
37
|
Abstract
Multicompound TiO2/SiO2 nanoparticles with a diameter of 50–70 nm were generated using a liquid flame spray (LFS) nanoparticle deposition in a single flame. Here, we study the photocatalytic activity of deposited multicompound nanoparticles in gas-phase via oxidation of acetylene into carbon dioxide that gives new insight about the multicompound nanoparticle morphology. A small addition of SiO2 content of 0.5%, 1.0% and 3.0% significantly suppressed the photocatalytic activity by 33%, 44% and 70%, respectively, whereas 5.0% SiO2 addition completely removed the activity. This may be due to a formation of a thin passivating SiO2 layer on top of the of the TiO2 nanostructures during the LFS nanoparticle deposition. Surface wetting results support this hypothesis with a significant increase in water contact angle as the SiO2 content is increased.
Collapse
|
38
|
Photocatalytic Porous Silica-Based Granular Media for Organic Pollutant Degradation in Industrial Waste-Streams. Catalysts 2021. [DOI: 10.3390/catal11020258] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Photocatalytic treatment of organic contaminants in industrial wastewaters has gained interest due to their potential for effective degradation. However, photocatalytic slurry reactors are hindered by solution turbidity, dissolved salt content, and absorbance of light. Research presented here introduces the development and application of a novel, photocatalytic, porous silica-based granular media (SGM). SGM retains the cross-linked structure developed during synthesis through a combination of foaming agent addition and activation temperature. The resultant media has a high porosity of 88%, with a specific surface area of ~150 m2/gram. Photocatalytic capabilities are further enhanced as the resultant structure fixes the photocatalyst within the translucent matrix. SGM is capable of photocatalysis combined with diffusion of nucleophiles, electrophiles, and salts from pore space. The photocatalytic efficiencies of SGM at various silica contents were quantified in batch reactors using methylene blue destruction over time and cycles. Methylene blue concentrations of 10 mg/L were effectively degraded (>90%) within 40 min. This effectiveness was retained over multiple cycles and various methylene blue concentrations. SGM is a passive and cost-effective granular treatment system technology which can translate to other organic contaminants and industrial processes.
Collapse
|
39
|
Behnood R, Sodeifian G. Novel ZnCo2O4 embedded with S, N-CQDs as efficient visible-light photocatalyst. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112971] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
40
|
Pourshirband N, Nezamzadeh-Ejhieh A, Nezamoddin Mirsattari S. The coupled AgI/BiOI catalyst: Synthesis, brief characterization, and study of the kinetic of the EBT photodegradation. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.138090] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
41
|
A ternary Cu2O/BiVO4/WO3 nano-composite: Scavenging agents and the mechanism pathways in the photodegradation of sulfasalazine. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113701] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
42
|
CO oxidation and organic dyes degradation over graphene-Cu and graphene-CuNi catalysts obtained by solution combustion synthesis. Sci Rep 2020; 10:16104. [PMID: 32999310 PMCID: PMC7527964 DOI: 10.1038/s41598-020-72872-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 09/07/2020] [Indexed: 01/05/2023] Open
Abstract
Graphene and its analogs in combination with metal nanopowders are among the most promising catalysts for various industry valuable processes. The newly obtained solution combustion synthesized graphene–Cu and graphene–CuNi nanocomposites were examined in heterogeneous catalysis of thermal activated CO oxidation and photoactivated degradation of acid telon blue and direct blue dyes. The nanocomposites are characterized by a closely connected solution combustion synthesized graphene-metal structure with a number of graphene layers from 1 to 3 and fine metal grains sizes of 31 nm (Cu) and 14 nm (CuNi). The experimental data showed the obtained graphene-metal nanocomposites are among the most effective catalysts for CO oxidation with a temperature of 100% conversion of 150 °C and 200 °C for Cu and CuNi containing catalysts, respectively. At the same time, both nanopowders were found inactive for dyes degradation.
Collapse
|
43
|
Omrani N, Nezamzadeh-Ejhieh A. A novel quadripartite Cu2O-CdS-BiVO4-WO3 visible-light driven photocatalyst: Brief characterization and study the kinetic of the photodegradation and mineralization of sulfasalazine. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112726] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
44
|
Payra S, Likhitha Reddy K, Sharma RS, Singh S, Roy S. A trade-off between adsorption and photocatalysis over ZIF-derived composite. JOURNAL OF HAZARDOUS MATERIALS 2020; 393:122491. [PMID: 32197202 DOI: 10.1016/j.jhazmat.2020.122491] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/03/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
The adsorption with highly porous adsorbents is an efficient technique to trap the uncontrolled release of antibiotics in the environment, however, mere adsorption does not mineralize the discharged antibiotics. On the contrary, the regular photocatalysts completely mineralize the antibiotics, however suffers from high efficiency due to comparatively low surface area and porosity. In this work, a balance has been made between efficient adsorption followed by complete degradation of the adsorbed antibiotic over ZIF-8 derived ZnO/N-doped carbon composite. The nitrogen-doped carbon produced at 1000 °C showed a very high adsorption capacity of SMX, due to higher surface area, porosity and better surface interaction between adsorbate and adsorbent. The ZnO formed at 600 °C produced sufficient OH· that were responsible to show a very high rate of complete photocatalytic mineralization of SMX over the material. The ZnO/N-doped carbon composite showed a very high rate of photodegradation with a corresponding rate constant of 4.36 × 10-2 min-1. The complete degradation mechanism was proposed and rates were compared with existing literature.
Collapse
Affiliation(s)
- Soumitra Payra
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad, 500078, India
| | - K Likhitha Reddy
- Department of Chemical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad, 500078, India
| | - Rohit S Sharma
- Department of Chemical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad, 500078, India
| | - Shreya Singh
- Department of Chemical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad, 500078, India
| | - Sounak Roy
- Department of Chemistry, Birla Institute of Technology and Science (BITS) Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad, 500078, India.
| |
Collapse
|
45
|
Ibrahem MA, Rasheed BG, Mahdi RI, Khazal TM, Omar MM, O'Neill M. Plasmonic-enhanced photocatalysis reactions using gold nanostructured films. RSC Adv 2020; 10:22324-22330. [PMID: 35514594 PMCID: PMC9054582 DOI: 10.1039/d0ra03858j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 06/05/2020] [Indexed: 11/21/2022] Open
Abstract
This work shows the enhancement of the visible photocatalytic activity of TiO2 NPs film using the localized surface plasmonic resonance of Au nanostructures. We adopted a simple yet effective surface treatment to tune the size distribution, and plasmonic resonance spectrum of Au nanostructured films on glass substrates, by hot plate annealing in air at low temperatures. A hybrid photocatalytic film of TiO2:Au is utilized to catalyse a selective photodegradation reaction of Methylene Blue in solution. Irradiation at the plasmonic resonance wavelength of the Au nanostructures provides more effective photodegradation compared to broadband artificial sunlight of significantly higher intensity. This improvement is attributed to the active contribution of the plasmonic hot electrons injected into the TiO2. The broadband source initiates competing photoreactions in the photocatalyst, so that carrier transfer from the catalyst surface to the solution is less efficient. The proposed hybrid photocatalyst can be integrated with a variety of device architectures and designs, which makes it highly attractive for low-cost photocatalysis applications. This work shows the enhancement of the visible photocatalytic activity of TiO2 NPs film using the localized surface plasmonic resonance of Au nanostructures.![]()
Collapse
Affiliation(s)
- Mohammed A Ibrahem
- Laser Sciences and Technology Branch, Applied Sciences Department, University of Technology Baghdad Iraq
| | - Bassam G Rasheed
- Laser and Optoelectronic Engineering Department, College of Engineering, Al-Nahrain University Baghdad Iraq
| | - Rahman I Mahdi
- Nanotechnology and Advanced Materials Research Centre, University of Technology Baghdad Iraq
| | - Taha M Khazal
- Laser Sciences and Technology Branch, Applied Sciences Department, University of Technology Baghdad Iraq
| | - Maryam M Omar
- Laser Sciences and Technology Branch, Applied Sciences Department, University of Technology Baghdad Iraq
| | - Mary O'Neill
- School of Science and Technology, Nottingham Trent University Clifton Lane Nottingham NG11 8NS UK
| |
Collapse
|
46
|
The Photocatalytic Activity of Titania Coatings Produced by Electrochemical and Chemical Oxidation of Ti6Al4V Substrate, Estimated According to ISO 10678:2010The Photocatalytic Activity of Titania Coatings Produced by Electrochemical and Chemical Oxidation of Ti6Al4V Substrate, Estimated According to ISO 10678:2010. MATERIALS 2020; 13:ma13112649. [PMID: 32532021 PMCID: PMC7321569 DOI: 10.3390/ma13112649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 01/08/2023]
Abstract
The last twenty years have been a period of intense investigations of materials based on titanium dioxide, which have unique properties and functionalities, and which can be used in various areas of medicine. As a part of this issue, the results of our works for the assessment of the photocatalytic activity of titanium dioxide nanocoatings of different nanoarchitecture (nanoporous, nanotubular, nanosponge-like and nanofibrous examples), which were earlier checked in terms of their biocompatibility and usability for the modification of medical devices' surfaces, are presented. The studied materials were produced on the surface of Ti6Al4V substrates using electrochemical and chemical oxidation methods. The activity of produced titania materials was studied on the base of the methylene blue (MB) degradation effect, in accordance to ISO 10678:2010. In our works, we have focused on the analysis of the correlation between the photocatalytic activity of nanoarchitecturally different TiO2 coatings, their morphology and structure. The obtained results prove that all studied coatings, both amorphous and amorphous containing crystalline domains, revealed photocatalytic activity in the photoinduced degradation of the organic pollution standard. This activity may be an additional advantage of medical device coatings, being adequate for use in sterilization processes applying UVA light.
Collapse
|
47
|
Kim D, Kim H, Chang JY. Designing Internal Hierarchical Porous Networks in Polymer Monoliths that Exhibit Rapid Removal and Photocatalytic Degradation of Aromatic Pollutants. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907555. [PMID: 32348034 DOI: 10.1002/smll.201907555] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/27/2020] [Accepted: 03/27/2020] [Indexed: 05/14/2023]
Abstract
This paper describes the preparation of 3D polymer monoliths containing internal hierarchical porosity. The porous networks are fabricated based on Pickering high-internal-phase emulsions (HIPEs) stabilized by microporous β-cyclodextrin-based polymer particles (CDPs) as the emulsifier; CDPs are facilely synthesized by the polyaddition reactions without the need for catalysts. The designed Pickering agents enable to form a bicontinuous internal phase in 8:2 cyclohexane-water v/v, and the oil droplets in the continuous water phase is found to be fairly stable up to 1 month. Furthermore, the addition of acrylamide and N,N'-methylenebis(acrylamide) results in polymer networks after in situ thermal polymerization at 60 °C in the water phase, and the monoliths include both interconnected macropores from the HIPE template and micro- and mesopores from the CDPs embedded at the interface. The porous monoliths rapidly absorb a variety of solvents taking advantage of multiscale porosity and amphiphilicity. Furthermore, the materials can be efficiently used for the removal of aromatic pollutants and then reused after washing and drying without the deterioration of performance. Also, they exhibit high photocatalytic capability and good recyclability as being used as a catalytic support when embedded with titanium dioxide (TiO2 ).
Collapse
Affiliation(s)
- Doyeon Kim
- Department of Materials Science and Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Hyungwoo Kim
- School of Polymer Science and Engineering & Alan G. MacDiarmid Energy Research Institute, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Korea
| | - Ji Young Chang
- Department of Materials Science and Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| |
Collapse
|
48
|
Akerdi AG, Bahrami SH, Pajootan E. Modeling and optimization of Photocatalytic Decolorization of binary dye solution using graphite electrode modified with Graphene oxide and TiO 2. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:51-62. [PMID: 32399220 PMCID: PMC7203298 DOI: 10.1007/s40201-019-00437-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 12/30/2019] [Indexed: 06/11/2023]
Abstract
In this paper, the experimental design methodology was employed for modeling and optimizing the operational parameters of the photocatalytic degradation of a binary dye solution using a fixed photocatalytic compound. The compound used was modified graphite electrode (GE) with graphene oxide (GO) on which TiO2 nanoparticles were immobilized. GO nanoparticle was deposited on graphite electrode (GO-GE) using electrochemical approach. TiO2 nanoparticles were immobilized on GO-GE by solvent evaporation method. A binary solution containing mixture of methylene blue (MB) and acid red 14 (AR14) was chosen as dye model. The degradation intermediates were detected and analyzed using gas chromatography. Effect of different factors on the photocatalytic decolorization efficiency was investigated and optimized using response surface methodology (RSM). The obtained results indicated that the prepared TiO2-GO-CE can decolorize MB with high efficiency (93.43%) at pH 11, dye concentration of 10 mg/L and 0.04 g of immobilized TiO2 on the GO fabricated plates after 120 min of photocatalytic process. It was demonstrated that by modifying GE with GO the stability of the electrode was remarkably enhanced. The ANOVA results (R2 = 0.97 and P value <0.0001 for MB, R2 = 0.96 and P value <0.0001 for AR14) and numerical optimization showed that it is possible to make good prediction on decoloration behavior and save time and energy with less number of experiments using design of experiments (DoE) like the RSM. Graphical abstract Wastewater treatment processWastewater treatment process.
Collapse
Affiliation(s)
- Abdollah Gholami Akerdi
- Textile Engineering Department, Amirkabir University of Technology, 424 Hafez Ave, Tehran, 15875-4413 Iran
| | - S. Hajir Bahrami
- Textile Engineering Department, Amirkabir University of Technology, 424 Hafez Ave, Tehran, 15875-4413 Iran
| | - Elmira Pajootan
- Textile Engineering Department, Amirkabir University of Technology, 424 Hafez Ave, Tehran, 15875-4413 Iran
| |
Collapse
|
49
|
Zulfiqar A, Temerov F, Saarinen JJ. Multilayer TiO 2 Inverse Opal with Gold Nanoparticles for Enhanced Photocatalytic Activity. ACS OMEGA 2020; 5:11595-11604. [PMID: 32478250 PMCID: PMC7254782 DOI: 10.1021/acsomega.0c00833] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 04/23/2020] [Indexed: 05/17/2023]
Abstract
Three-dimensional highly ordered multilayer titanium dioxide (TiO2) inverse opal (TIO) structures with two pore sizes were fabricated over a large surface using a self-convective method. The fabricated TIO multilayers were functionalized with gold nanoparticles (AuNPs) by immersing the samples in solution with gold nanoparticles. The photocatalytic activity of TiO2 was enhanced by 85% via plasmonic activation of AuNPs that increased the lifetime of photogenerated holes and electrons. The improved photocatalytic activity was characterized with both UVA and visible light irradiation using an in-house built gas-phase photoreactor.
Collapse
|
50
|
Singh J, Jadhav S, Avasthi S, Sen P. Designing Photocatalytic Nanostructured Antibacterial Surfaces: Why Is Black Silica Better than Black Silicon? ACS APPLIED MATERIALS & INTERFACES 2020; 12:20202-20213. [PMID: 32283016 DOI: 10.1021/acsami.0c02854] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The efficiency of photocatalytic antibacterial surfaces is limited by the absorption of light in it. Light absorption in photocatalytic surfaces can be enhanced by structuring it, leading to increased generation of reactive oxygen species (ROS) and hence improved bactericidal efficacy. A second, more passive methodology to kill bacteria involves the use of sharp nanostructures that mechanically disrupt the bacterial membrane. Recently, these two mechanisms were combined to form photoactive nanostructured surfaces with better antibacterial efficacy. However, the design rules for fabricating the optimal photoactive nanostructured surfaces have not been articulated. Here we show that for optimal performance it is very important to account for optoelectrical properties and geometry of the photoactive coating and the underlying pillar. We show that TiO2-coated nanopillars arrays made of SiO2, a material with a low extinction coefficient, have 73% higher bactericidal efficacies than those made of Si, a material with a high extinction coefficient. The finite element method (FEM) shows that despite the higher absorption in higher aspect ratio nanopillars, their performance is not always better. The concentration of bulk ROS saturates around 5 μm. For taller pillars, the improvement in surface ROS concentration is minimal due to the diffusion bottleneck. Simulation results corroborate with the experimentally observed methylene blue degradation and bacterial count measurements and provide an explanation of the observed phenomenon. The guidelines for designing these optically activated photocatalyst nanopillars can be extended to other photocatalytic material after adjusting for their respective properties.
Collapse
Affiliation(s)
- Jagriti Singh
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Shubham Jadhav
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Sushobhan Avasthi
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Prosenjit Sen
- Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore 560012, India
| |
Collapse
|