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Jiang T, Hou L, Rahman SM, Gong Z, Bai X, Vulpe C, Fasullo M, Gu AZ. Amplified and distinctive genotoxicity of titanium dioxide nanoparticles in transformed yeast reporters with human cytochrome P450 (CYP) genes. JOURNAL OF HAZARDOUS MATERIALS 2024; 474:134850. [PMID: 38850947 DOI: 10.1016/j.jhazmat.2024.134850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 06/03/2024] [Accepted: 06/06/2024] [Indexed: 06/10/2024]
Abstract
Titanium dioxide nanoparticles (nTiO2) have been considered a possible carcinogen to humans, but most existing studies have overlooked the role of human enzymes in assessing the genotoxicity of nTiO2. Here, a toxicogenomics-based in vitro genotoxicity assay using a GFP-fused yeast reporter library was employed to elucidate the genotoxic potential and mechanisms of nTiO2. Moreover, two new GFP-fused yeast reporter libraries containing either human CYP1A1 or CYP1A2 genes were constructed by transformation to investigate the potential modulation of nTiO2 genotoxicity in the presence of human CYP enzymes. This study found a lack of appreciable nTiO2 genotoxicity as indicated by the yeast reporter library in the absence of CYP expression but a significantly elevated indication of genotoxicity in either CYP1A1- or CYP1A2-expressing yeast. The intracellular reactive oxygen species (ROS) measurement indicated significantly higher ROS in yeast expressing either enzyme. The detected mitochondrial DNA damage suggested mitochondria as one of the target sites for oxidative damage by nTiO2 in the presence of either one of the CYP enzymes. The results thus indicated that the genotoxicity of nTiO2 was enhanced by human CYP1A1 or CYP1A2 enzyme and was associated with elevated oxidative stress, which suggested that the similar mechanisms could occur in human cells.
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Affiliation(s)
- Tao Jiang
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA 02115, USA; Department of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, NY 12222, USA
| | - Liyuan Hou
- Department of Civil and Environmental Engineering, Utah State University, Logan, UT 84322, USA; Utah Water Research Laboratory, Utah State University, Logan, UT 84322, USA
| | - Sheikh Mokhlesur Rahman
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA 02115, USA; Department of Civil Engineering, Bangladesh University of Engineering and Technology, BUET Central Road, Dhaka 1000, Bangladesh
| | - Zixuan Gong
- Department of Materials, Imperial College London, London LND SW7 2AZ, UK
| | - Xueke Bai
- Department of Chemistry, The University of Manchester, Manchester M13 9PL, UK
| | - Christopher Vulpe
- Department of Physiological Sciences, Center for Environmental and Human Toxicology, University of Florida, Gainesville, FL 32611, USA
| | - Michael Fasullo
- Department of Nanoscale Science and Engineering, University at Albany, State University of New York, Albany, NY 12222, USA
| | - April Z Gu
- School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
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2
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Dhillon M, Naskar A, Kaushal N, Bhansali S, Saha A, Basu AK. A novel GO hoisted SnO 2-BiOBr bifunctional catalyst for the remediation of organic dyes under illumination by visible light and electrocatalytic water splitting. NANOSCALE 2024; 16:12445-12458. [PMID: 38775017 DOI: 10.1039/d4nr01154f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
It is imperative to develop affordable multi-functional catalysts based on transition metals for various applications, such as dye degradation or the production of green energy. For the first time, we propose a simple chemical bath method to create a SnO2-BiOBr-rGO heterojunction with remarkable photocatalytic and electrocatalytic activities. After introducing graphene oxide (GO) into the SnO2-BiOBr nanocomposite, the charge separation, electron mobility, surface area, and electrochemical properties were significantly improved. The X-ray diffraction results show the successful integration of GO into the SnO2-BiOBr nanocomposite. Systematic material characterization by scanning and transmission electron microscopy showed that the photocatalysts are composed of uniformly distributed SnO2 nanoparticles (∼11 nm) on the regular nanosheets of BiOBr (∼94 nm) and rGO. The SnO2-BiOBr-rGO photocatalyst has outstanding photocatalytic activity when it comes to reducing a variety of organic dyes like rhodamine B (RhB) and methylene blue (MB). Within 90 minutes of visible light illumination, degradation of a maximum of 99% for MB and 99.8% for RhB was noted. The oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance was also tested for the ternary nanocomposite, and significantly lower overpotential values of 0.34 and -0.11 V (vs. RHE) at 10 mA cm-2 were observed for the OER and HER, respectively. Furthermore, the Tafel slope values are 34 and 39 mV dec-1 for the OER and HER, respectively. The catalytic degradation of dyes with visible light and efficient OER and HER performance offer this work a broad spectrum of potential applications.
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Affiliation(s)
- Manshu Dhillon
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Mohali 140306, India
| | - Abhishek Naskar
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Mohali 140306, India
| | - Neha Kaushal
- CSIR-Central Scientific Instruments Organisation (CSIR-CSIO), Sector 30 C, Chandigarh, 160030, India
- Academy of Scientific and Innovative Research (AcSIR-CSIO), Ghaziabad-201002, India
| | - Shekhar Bhansali
- Electrical and Computer Engineering, Florida International University, Miami, FL 33199, USA
| | - Avishek Saha
- Academy of Scientific and Innovative Research (AcSIR-CSIO), Ghaziabad-201002, India
- CSIR-National Chemical Laboratory (NCL), Dr. Homi Bhabha Road, Pune, 411008, India
| | - Aviru Kumar Basu
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Mohali 140306, India
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3
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Wahab A, Muhammad M, Ullah S, Abdi G, Shah GM, Zaman W, Ayaz A. Agriculture and environmental management through nanotechnology: Eco-friendly nanomaterial synthesis for soil-plant systems, food safety, and sustainability. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171862. [PMID: 38527538 DOI: 10.1016/j.scitotenv.2024.171862] [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: 12/23/2023] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 03/27/2024]
Abstract
Through the advancement of nanotechnology, agricultural and food systems are undergoing strategic enhancements, offering innovative solutions to complex problems. This scholarly essay thoroughly examines nanotechnological innovations and their implications within these critical industries. Traditional practices are undergoing radical transformation as nanomaterials emerge as novel agents in roles traditionally filled by fertilizers, pesticides, and biosensors. Micronutrient management and preservation techniques are further enhanced, indicating a shift towards more nutrient-dense and longevity-oriented food production. Nanoparticles (NPs), with their unique physicochemical properties, such as an extraordinary surface-to-volume ratio, find applications in healthcare, diagnostics, agriculture, and other fields. However, concerns about their potential overuse and bioaccumulation raise unanswered questions about their health effects. Molecule-to-molecule interactions and physicochemical dynamics create pathways through which nanoparticles cause toxicity. The combination of nanotechnology and environmental sustainability principles leads to the examination of green nanoparticle synthesis. The discourse extends to how nanomaterials penetrate biological systems, their applications, toxicological effects, and dissemination routes. Additionally, this examination delves into the ecological consequences of nanomaterial contamination in natural ecosystems. Employing robust risk assessment methodologies, including the risk allocation framework, is recommended to address potential dangers associated with nanotechnology integration. Establishing standardized, universally accepted guidelines for evaluating nanomaterial toxicity and protocols for nano-waste disposal is urged to ensure responsible stewardship of this transformative technology. In conclusion, the article summarizes global trends, persistent challenges, and emerging regulatory strategies shaping nanotechnology in agriculture and food science. Sustained, in-depth research is crucial to fully benefit from nanotechnology prospects for sustainable agriculture and food systems.
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Affiliation(s)
- Abdul Wahab
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Murad Muhammad
- University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011, China
| | - Shahid Ullah
- Department of Botany, University of Peshawar, Peshawar, Pakistan
| | - Gholamreza Abdi
- Department of Biotechnology, Persian Gulf Research Institute, Persian Gulf University, Bushehr 75169, Iran
| | | | - Wajid Zaman
- Department of Life Sciences, Yeungnam University, Gyeongsan 38541, Republic of Korea.
| | - Asma Ayaz
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China.
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4
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Erjeno DD, Asequia DMA, Osorio CKF, Omisol CJM, Etom AE, Hisona RMR, Tilendo AC, Triana APG, Dumancas GG, Zoleta JB, Alguno AC, Malaluan RM, Lubguban AA. Facile Synthesis of Band Gap-Tunable Kappa-Carrageenan-Mediated C,S-Doped TiO 2 Nanoparticles for Enhanced Dye Degradation. ACS OMEGA 2024; 9:21245-21259. [PMID: 38764615 PMCID: PMC11097159 DOI: 10.1021/acsomega.4c01370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/15/2024] [Accepted: 04/23/2024] [Indexed: 05/21/2024]
Abstract
Semiconducting nanoparticles (SNPs) have garnered significant attention for their role in photocatalysis technology, offering a cost-effective and highly efficient method for breaking down organic dyes. Of particular significance within SNP-based photocatalysis are tunable band gap TiO2 nanoparticles (NPs), which demonstrate remarkable enhancement in photocatalytic efficiency. In the present work, we introduce an approach for the synthesis of TiO2 NPs using kappa-carrageenan (κ-carrageenan), not just as a reducing and stabilizing agent but as a dopant for the resulting TiO2 NPs. During the synthesis of TiO2 NPs in the presence of sulfate-rich carrageenan, the process predominantly leaves residual sulfur and carbon. The presence of residual carbon, in conjunction with sulfur doping, as indicated by fast FTIR spectra, XPS, and EDX, leads to a significant reduction in the band gap of the resulting composite to 2.71 eV. The reduction of composite band gap yields remarkable degradation of methylene blue (99.97%) and methyl orange (97.84%). This work presents an eco-friendly and highly effective solution for the swift removal of environmentally harmful organic dyes.
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Affiliation(s)
- Daisy
Jane D. Erjeno
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Dan Michael A. Asequia
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Carlo Kurt F. Osorio
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Christine Joy M. Omisol
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Andrei E. Etom
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Renzo Miguel R. Hisona
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Amierson C. Tilendo
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Chemical
Engineering Department, Mindanao State University
− Marawi, Marawi City 9700, Philippines
| | - Ann Pearl G. Triana
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Gerard G. Dumancas
- Department
of Chemistry, The University of Scranton, Scranton, Pennsylvania 18510, United States
| | - Joshua B. Zoleta
- Department
of Materials Resources Engineering and Technology, Mindanao State University − Iligan Institute of Technology, Iligan City, 9200 Philippines
| | - Arnold C. Alguno
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Department
of Physics, Mindanao State University −
Iligan Institute of Technology, Iligan City 9200, Philippines
| | - Roberto M. Malaluan
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Department
of Materials Resources Engineering and Technology, Mindanao State University − Iligan Institute of Technology, Iligan City, 9200 Philippines
| | - Arnold A. Lubguban
- Center
for Sustainable Polymers, Mindanao State
University − Iligan Institute of Technology, Iligan City 9200, Philippines
- Department
of Materials Resources Engineering and Technology, Mindanao State University − Iligan Institute of Technology, Iligan City, 9200 Philippines
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5
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Eddy DR, Nur Sheha GA, Permana MD, Saito N, Takei T, Kumada N, Irkham, Rahayu I, Abe I, Sekine Y, Oyumi T, Izumi Y. Study on triphase of polymorphs TiO 2 (anatase/rutile/brookite) for boosting photocatalytic activity of metformin degradation. CHEMOSPHERE 2024; 351:141206. [PMID: 38219987 DOI: 10.1016/j.chemosphere.2024.141206] [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: 10/13/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/16/2024]
Abstract
The elution of pharmaceutical products such as metformin at higher concentrations than the safe level in aquatic systems is a serious threat to human health and the ecosystem. Photocatalytic technology using TiO2 semiconductors potentially fixes this problem. This study aims to synthesize triphasic anatase-rutile-brookite TiO2 using ultrasound assisted sol-gel technique in the presence of acid and its application to photodegradation of metformin under UV light irradiation. Based on X-ray diffraction analysis, a TiO2 sample consisted of anatase (76%), rutile (7%), and brookite (17%) polymorph (A76R7B17) that was fully crystallized. Scanning electron microscopy (EM)-energy dispersive X-ray spectra results showed agglomerated triphasic A76R7B17 with irregular spherical clusters. Transmission EM results revealed that the crystal size of A76R7B17 was 4-14 nm. The Brunauer-Emmett-Teller analysis showed the sample's specific surface area of 149 m2 g-1. The degradation test of metformin demonstrated that the A76R7B17 exhibited a 75.4% degradation efficiency after 120 min under UV light irradiation, significantly higher than using biphasic and single-phase TiO2 photocatalysts. This difference could be attributed to the heterojunction effect of triphasic materials that effectively reduced electron-hole recombination rate as well as the combination of effective electron transfer from conduction band of brookite and anatase and the utilization of wider range of UV-visible light using rutile.
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Affiliation(s)
- Diana Rakhmawaty Eddy
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia.
| | - Geometry Amal Nur Sheha
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | - Muhamad Diki Permana
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia; Special Educational Program for Green Energy Conversion Science and Technology, Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, Kofu, 400-8511, Japan; Center for Crystal Science and Technology, University of Yamanashi, Kofu, 400-8511, Japan
| | - Norio Saito
- Center for Crystal Science and Technology, University of Yamanashi, Kofu, 400-8511, Japan
| | - Takahiro Takei
- Center for Crystal Science and Technology, University of Yamanashi, Kofu, 400-8511, Japan
| | - Nobuhiro Kumada
- Center for Crystal Science and Technology, University of Yamanashi, Kofu, 400-8511, Japan
| | - Irkham
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | - Iman Rahayu
- Department of Chemistry, Faculty Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, 45363, Indonesia
| | - Ikki Abe
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
| | - Yuta Sekine
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
| | - Tomoki Oyumi
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
| | - Yasuo Izumi
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba, 263-8522, Japan
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6
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Abid M, Iatsunskyi I, Coy E, Lesage G, Ben Haj Amara A, Bechelany M. Ag-BN/HNT-TiO 2 nanofibers produced by electrospinning as catalysts to remove acetaminophen. Heliyon 2024; 10:e24740. [PMID: 38312622 PMCID: PMC10834824 DOI: 10.1016/j.heliyon.2024.e24740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 01/08/2024] [Accepted: 01/12/2024] [Indexed: 02/06/2024] Open
Abstract
In this study, we present a novel approach to enhancing the degradation of acetaminophen (ACT) using nanostructured hybrid nanofibers. The hybrid nanofibers were produced by employing both sol-gel and electrospinning methodologies, integrating precise quantities of silver (Ag) and boron nitride (BN) nanosheets into titanium oxide (TiO2) nanofibers and halloysite nanotubes (HNT). We extensively examined the morphology, structure, and optical properties of these materials by employing scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy in our analysis. In the case of the HNT-TiO2 composite, the introduction of Ag nanoparticles at concentrations of 0.5%, 1.5%, and 3% led to a significant improvement in photocatalytic activity. Under visible light exposure for 4 h, the photocatalytic activity increased from 63% (HNT-TiO2) to 78.92%, 91.21%, and 92.90%, respectively. This enhancement can be attributed to the role of Ag nanoparticles as co-catalysts, facilitating the separation of electrons and holes generated during the photocatalytic process. Furthermore, BN nanosheets served as co-catalysts, capitalizing on their distinct attributes, including exceptional thermal conductivity, chemical stability, and electrical insulation. The incorporation of BN nanosheets into the Ag (3%)/HNT-TiO2 composite at a concentration of 5% resulted in a remarkable increase in ACT degradation efficiency. The degradation efficiency improved from 59.47% to an impressive 99.29% within a 2-h irradiation period due to the presence of BN nanosheets. Toxicity and scavenging assays revealed that OH•-, O2•-, and h+ were the major contributors to ACT degradation. Moreover, across five consecutive cycles, the Ag-BN/HNT-TiO2 composite exhibited consistent and stable performance, underscoring the significant contributions of Ag and BN in augmenting the photocatalytic capabilities of the composite. Overall, our findings suggest that this novel hybrid nanofiber composite holds great promise for practical applications in environmental remediation due to its improved photocatalytic activity and stability.
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Affiliation(s)
- Mahmoud Abid
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, ENSCM, CNRS, 34730, Montpellier, France
- Laboratory of Resources, Materials & Ecosystem (RME), University of Carthage, Faculty of Sciences of Bizerte, Zarzouna, 7021, Tunisia
- CNRS, Grenoble INP, LMGP, Institute of Engineering, Université Grenoble Alpes, 38000, Grenoble, France
| | - Igor Iatsunskyi
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614, Poznan, Poland
| | - Emerson Coy
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614, Poznan, Poland
| | - Geoffroy Lesage
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, ENSCM, CNRS, 34730, Montpellier, France
| | - Abdesslem Ben Haj Amara
- Laboratory of Resources, Materials & Ecosystem (RME), University of Carthage, Faculty of Sciences of Bizerte, Zarzouna, 7021, Tunisia
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM, UMR 5635, Univ Montpellier, ENSCM, CNRS, 34730, Montpellier, France
- Gulf University for Science and Technology, GUST, Kuwait
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7
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El-Sawaf AK, Nassar AA, Tolan DA, Ismael M, Alhindawy I, M El-Desouky E, El-Nahas A, Shahien M, Maize M. A mesoporous Mo and N Co-doped TiO 2 nanocomposite with enhanced photocatalytic efficiency. RSC Adv 2024; 14:3536-3547. [PMID: 38259997 PMCID: PMC10801452 DOI: 10.1039/d3ra07258d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
This study reports the synthesis of a mesoporous Mo and N codoped anatase TiO2 nanocomposite with many oxygen vacancies using a simple one-step hydrothermal method and subsequent calcination treatment. Both Mo and N were effectively co-incorporated into the anatase phase of TiO2 without MoOx phase segregation. The codoped catalyst demonstrated a mesoporous architecture with a surface area of 107.48 m2 g-1 and a pore volume of 0.2974 cm3 g-1. X-ray photoelectron spectroscopy confirmed that both Mo and N dissolved in the TiO2 lattice and created induced oxygen vacancies. The interaction of the dopants (Mo and N) and oxygen vacancies clearly affected TiO2 crystal formation. Photocatalytic performance of the nanocomposite was investigated in terms of the decomposition of methyl orange at a concentration of 50 mg L-1 in an aqueous solution. The results revealed a significant methyl orange degradation of up to 99.6% after 30 min irradiation under a UV light. The impressive performance of the nanocomposite is assigned to the synergetic effect of important factors, including the co-doping of metallic (Mo) and non-metallic (N) elements, oxygen vacancy defects, bandgap, crystallite size, mesoporous structure, and BET surface area.
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Affiliation(s)
- Ayman K El-Sawaf
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | - Amal A Nassar
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
| | - Dina A Tolan
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University Alkharj 11942 Saudi Arabia
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | | | | | | | - Ahmed El-Nahas
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
| | - Mohammed Shahien
- Central Metallurgical Research & Development Institute (CMRDI) Helwan 11421 Egypt
| | - Mai Maize
- Department of Chemistry, Faculty of Science, Menoufia University Shibin El-Kom Egypt
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8
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Azizi ZL, Daneshjou S. Bacterial nano-factories as a tool for the biosynthesis of TiO 2 nanoparticles: characterization and potential application in wastewater treatment. Appl Biochem Biotechnol 2024:10.1007/s12010-023-04839-6. [PMID: 38175409 DOI: 10.1007/s12010-023-04839-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2023] [Indexed: 01/05/2024]
Abstract
The development of reliable and eco-conscious processes for nanoparticle synthesis constitutes a significant element in nanotechnology. TiO2 nanoparticles (NPs) are becoming essential due to their potential uses in dentistry, surgery, agriculture, and pharmacy. This leads to the development of various procedures for producing TiO2 NPs using various physicochemical methods. Still, the drawbacks of these conventional methods are associated with the emission of toxic chemicals into the atmosphere and high energy demands in production, hence endangering the health and the environment. Problems issued are solved by green nanotechnology, which offers tools as nano-factories by utilizing biological sources to subside the improper effects of conventional methods and produces nanoparticles through synthesis methods that are clean, safe, energy-efficient, and cost-effective. Among the biogenic sources, microbial cells such as bacteria possess intrinsic pathways of converting metallic salt to nanoparticles due to their ability to produce reductase enzymes. Also, they can offer features to products such as high dispersity and produce sustainable nanoparticles at a large scale. Biosynthesized TiO2 NPs have high oxidizing potential and a wide range of applications, specifically as photosensitizers and antimicrobial agents. This review will address bacterial nano-factories that can be utilized for the biosynthesis of TiO2 NPs, the characterization of biosynthesized nanoparticles, and their potential application in wastewater treatment.
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Affiliation(s)
- Zahra Latifi Azizi
- Department of Nanobiotechnology, Faculty of Biological Science, Tarbiat Modares University, Tehran, Iran
| | - Sara Daneshjou
- Department of Nanobiotechnology, Faculty of Biological Science, Tarbiat Modares University, Tehran, Iran.
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9
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Repnin A, Sotov A, Popovich A, Masaylo D. Development of TiO 2/ZrO 2 Multi-Material Obtained from Ceramic Pastes for Material Extrusion. MICROMACHINES 2023; 14:2177. [PMID: 38138346 PMCID: PMC10745982 DOI: 10.3390/mi14122177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/25/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023]
Abstract
The application of additive manufacturing method such as material extrusion (MEX) allows the successful fabrication of ceramic products, including multi-ceramic products. Promising materials in this research area are TiO2 and ZrO2 ceramics, which can be used in electrical and electronic engineering. The aim of this work is to investigate the possibility of fabricating TiO2/ZrO2 multi-materials from ceramic pastes that can be used in the MEX. In this work, defects, chemical and phase composition, and microhardness were analyzed in multi-ceramic samples after sintering. Multi-ceramic TiO2/ZrO2 samples after the sintering process without interlayer could not be fabricated due to a too large difference in shrinkage between TiO2 and ZrO2. The samples with one and three interlayers also have defects, but they are less significant and can be fabricated. The average hardness for the TiO2 zone was 636.7 HV and for the ZrO2 zone was 1101 HV. In the TiO2 zone, only TiO2 phase in rutile is observed, while in the interlayer zones, in addition to rutile, ZrO2 and ZrTiO4 are also present, as is a small amount of Y2O3. In the zone ZrO2, only the ZrO2 phase is observed. The chemical analysis revealed that the interlayers comprise sintered ZrO2 granules enveloped by TiO2, ZrO2, and ZrTiO4.
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Affiliation(s)
- Arseniy Repnin
- Institute of Machinery, Materials, and Transport, Peter the Great St. Petersburg Polytechnic University (SPbPU), Polytechnicheskaya, 29, 195251 Saint Petersburg, Russia
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10
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Turkten N, Karatas Y, Uyguner-Demirel CS, Bekbolet M. Preparation of PANI modified TiO 2 and characterization under pre- and post- photocatalytic conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:111182-111207. [PMID: 37804384 DOI: 10.1007/s11356-023-30090-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/22/2023] [Indexed: 10/09/2023]
Abstract
Polyaniline (PANI) is a promising conducting polymer for surface modification of TiO2 to overcome limitations of the use of visible light and attain increased photocatalytic efficiency for the removal of organic contaminants. In this study, a series of polyaniline modified TiO2 (PANI-TiO2) composites were prepared by using "in-situ" chemical oxidation polymerization method. The composites were systematically characterized by Fourier transform infrared spectroscopy (equipped with an attenuated total reflection accessory, FTIR-ATR), Raman spectroscopy, X-ray diffractometry (XRD), scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDAX), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectroscopy (UV-DRS), photoluminescence spectroscopy (PL), nitrogen (N2) physisorption (Brunauer - Emmett - Teller surface area (SBET) and Barrett-Joyner-Halenda (BJH) pore size analysis), thermogravimetry-derivative thermogravimetry (TG-DTG) techniques. XRD patterns of PANI-TiO2 composites confirmed both the amorphous phase of PANI and the crystalline character of TiO2. TG/DTG analysis complemented the XRD profiles that the interactions between PANI and TiO2 resulted in a more stable PANI-TiO2 matrix. SEM images displayed the dominant morphology as dandelion-like shapes of PANI being more pronounced with increasing PANI ratios in PANI-TiO2 composites. UV-DRS profiles revealed that the band gap energies of the composites were lower than bare TiO2 expressing a shift to the visible light region. Both PL and UV-DRS analyses confirmed the band-gap reduction phenomenon of PANI modification of TiO2. The incorporation of PANI into TiO2 resulted in a reduction of the surface area of TiO2. The composites were subsequently subjected to photocatalytic activity assessment tests using humic acid (HA) as a model of refractory organic matter (RfOM) under simulated solar irradiation (Uyguner-Demirel et al. Environ Sci Pollut Res 30 85626-85638, 2023). The morphological and structural changes attained upon application of photocatalysis were also evaluated by FTIR-ATR, Raman spectroscopy, XRD, and SEM-EDAX methods in a comparable manner. The FTIR-ATR spectral features of PANI, RfOM and all composites displayed peaks with slight shifts under pre- and post- photocatalytic conditions as well as following dark surface interactions. Besides exhibiting noticeable photocatalytic performance, PANI-TiO2 composites were also proven to maintain stability under non-selective oxidation conditions in the presence of a complex organic matrix. The prepared PANI-TiO2 composites overcoming the limitations of UVA light active bare TiO2 photocatalysis could possibly find a beneficial use as potential catalysts in solar photocatalytic applications.
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Affiliation(s)
- Nazli Turkten
- Department of Chemistry, Faculty of Arts and Sciences, Kirsehir Ahi Evran University, Kirsehir, 40100, Türkiye.
| | - Yunus Karatas
- Department of Chemistry, Faculty of Arts and Sciences, Kirsehir Ahi Evran University, Kirsehir, 40100, Türkiye
| | | | - Miray Bekbolet
- Institute of Environmental Sciences, Bogazici University, Bebek, Istanbul, 34342, Türkiye
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11
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Yang K, Wei D, Jia C, Li J. A Calcination-Free Sol-Gel Method to Prepare TiO 2 -Based Hybrid Semiconductors for Enhanced Visible Light-Driven Hydrogen Production. Chempluschem 2023; 88:e202300172. [PMID: 37246610 DOI: 10.1002/cplu.202300172] [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: 04/06/2023] [Revised: 05/22/2023] [Accepted: 05/26/2023] [Indexed: 05/30/2023]
Abstract
In recent years, the sol-gel method has been extensively utilized to develop efficient and stable organic semiconductor composite titanium dioxide (TiO2 ) photocatalysts. However, the high-temperature calcination requirements of this method consume energy during preparation and degrade encapsulated organic semiconductor molecules, resulting in decreased photocatalytic hydrogen production efficiency. In this study, we found that by selecting an appropriate organic semiconductor molecule, 1,4-naphthalene dicarboxylic acid (NA), high-temperature calcination can be avoided in the sol-gel process, yielding an organic-inorganic hybrid material with stable and effective photocatalytic properties. The uncalcined material displayed a hydrogen production rate of 2920±15 μmol g-1 h-1 , which was approximately twice the maximum production rate observed in the calcined material. Likewise, the specific surface area of the uncalcined material, at 252.84 m2 g-1 , was significantly larger compared to the calcined material. Comprehensive analyses confirmed successful NA and TiO2 doping, while UV-vis and Mott-Schottky tests revealed a reduced energy bandgap (2.1 eV) and expanded light absorption range. Furthermore, the material maintained robust photocatalytic activity after a 40-hour cycle test. Our findings demonstrate that by using NA doping without calcination, excellent hydrogen production performance can be achieved, offering a novel approach for environmentally friendly and energy-saving production of organic semiconductor composite TiO2 materials.
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Affiliation(s)
- Kang Yang
- School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| | - Dan Wei
- School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| | - Chunman Jia
- School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
| | - Jianwei Li
- School of Chemical Engineering and Technology, Hainan University, Haikou, 570228, China
- MediCity Research Laboratory, University of Turku, Tykistökatu 6, FI-20520, Turku, Finland
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12
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Marković MP, Cingesar IK, Grčić I, Žaja K, Vrsaljko D. Investigating the thermal and mechanical properties of novel LDPE/TiO 2 and LDPE/TiO 2/CNT composites for 3D printing applications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-28926-7. [PMID: 37505387 DOI: 10.1007/s11356-023-28926-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/18/2023] [Indexed: 07/29/2023]
Abstract
The development of new materials is essential for advancing technology and improving the quality of life. With new materials, we can create products that are stronger, more durable, and more efficient. The ongoing research and development of new materials for 3D printing applications continue to drive innovation in various fields, leading to improved products and processes with great benefits. The main goal of this work was to produce a functional filament with a 1.75-mm diameter that may be used for 3D printing. Composite materials were prepared using a low-density polyethylene (LDPE) resin as polymer matrix, and titanium dioxide (TiO2) and carbon nanotubes (CNT) as fillers in various ratios. Up to 15 wt% of TiO2 and 0.25 wt% of CNT were added. Some of the greatest difficulties with high filler content composites are achieving good homogeneity, and in the case of the 3D printing, greatest difficulties are producing the filament with a specific and stable filament diameter. During the 3D printing itself, the fillers can also often cause the nozzle clogging. This paper reports findings of thermal and mechanical properties of the LDPE/TiO2/CNT composites which are significant for the 3D printing process and the applicability of the composite materials. All of the planed composite materials are successfully prepared and 3D printed into the tensile test specimens. The melting point shift caused by the addition of fillers did not show consistent pattern at differential scanning calorimetry, as all of the samples had melting temperatures around 113.5 ± 1.4 °C. The addition of filler, according to the TGA, increased the threshold temperature for the material decomposition, in case of TiO2 5.4 °C increase, while TiO2 and CNT combination increased the threshold temperature for 6.8 °C. The results of the tensile test show a general increase trend with addition of TiO2 filler but do not show to a trend for the tensile strength as a result of the addition of CNT filler. The sample with highest TiO2 filler ratio of 15% (LDPE 15T0C) showed the greatest tensile strength of 14.5 MPa, compared to the 13.0 MPa of pure LDPE. The sample with 5% of TiO2 filler and 0.1% of CNT filler (LDPE 5T0.1C) showed the greatest elongation of 73.9%, compared to the 68.9% of pure LDPE.
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Affiliation(s)
- Marijan-Pere Marković
- University of Zagreb Faculty of Chemical Engineering and Technology, Marulićev trg 19, 10000, Zagreb, Croatia.
| | - Ivan Karlo Cingesar
- University of Zagreb Faculty of Chemical Engineering and Technology, Marulićev trg 19, 10000, Zagreb, Croatia
| | - Ivana Grčić
- University of Zagreb Faculty of Geotechnical Engineering, Hallerova aleja 7, 42000, Varaždin, Croatia
| | - Korina Žaja
- University of Zagreb Faculty of Chemical Engineering and Technology, Marulićev trg 19, 10000, Zagreb, Croatia
| | - Domagoj Vrsaljko
- University of Zagreb Faculty of Chemical Engineering and Technology, Marulićev trg 19, 10000, Zagreb, Croatia
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Kighuta K, Kim SW, Hou YL, Lee KP, Kim WJ. Facile and Simple Post Treatment Ball Milling Strategy for the Production of Low-Cost TiO 2 Composites with Enhanced Photocatalytic Performance and Applicability to Construction Materials. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4931. [PMID: 37512209 PMCID: PMC10381376 DOI: 10.3390/ma16144931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 07/03/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023]
Abstract
A facile and cost-effective approach assisted by ball milling (BM) of commercial titanium dioxide (TiO2), has been utilized to develop cheaper and efficient construction materials. At least three of the commercial and cheaper TiO2 samples (BA01-01, BA01-01+ and R996, designated as A1, A4 and R1, respectively) were selected and subjected to BM treatment to enhance their photocatalytic efficiencies, if possible. It was noted, that the samples A1, A4 and R1 were typical composites of TiO2 and calcium carbonate (CaCO3) and contained varying proportions of anatase, and rutile phases of TiO2 and CaCO3. Two of the highly efficient commercial TiO2 samples, Degussa P25 (simply designated as P25) and ST01 (Ishihara Ind.) were selected for making benchmark comparisons of photocatalytic efficiencies. The BM treated TiO2 samples (designated as TiO2-BM with respect to A1, A4 and R1) were evaluated for photocatalytic efficiencies both in both aqueous (methylene blue (MB)) and gaseous (NOx) photodegradation reactions. Based on detailed comparative investigations, it was observed that A1-BM photocatalyst exhibited superior photocatalytic performances over A4-BM and R1-BM, towards both MB and NOx photodegradation reactions. The difference of NOx photodegradation efficiency between the mortar mixed with A1-BM and that mixed with ST01, and P-25 at 15% were 16.6%, and 32.4%, respectively. Even though the mortar mixed with A1-BM at 15% composition exhibited a slightly lower NOx photodegradation efficiency as compared to mortar mixed with the expensive ST01 and P-25 photocatalysts, the present work promises an economic application in the eco-friendly construction materials for air purification considering the far lower cost of A1. The reasons for the superior performance of A1-BM were deduced through characterization of optical properties, surface characteristics, phase composition, morphology, microstructure and particle size distribution between pristine and BM treated A1 using characterization techniques such as diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction analysis, field emission scanning electron microscopy and particle size analysis.
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Affiliation(s)
- Kabuyaya Kighuta
- Department of Civil Engineering, Kyungpook National University, Daegu 41566, Republic of Korea
- GOONWORLD Corporate Research Institute, Dong-gu Inovalley 26 Road 9-115, Daegu 41065, Republic of Korea
| | - Sun-Woo Kim
- Department of Chemistry Education, Chosun University, Gwangju 61452, Republic of Korea
| | - Yao-Long Hou
- College of Railway Engineering, Zhengzhou Railway Vocational and Technical College, Zhengzhou 451460, China
| | - Kwang-Pill Lee
- GOONWORLD Corporate Research Institute, Dong-gu Inovalley 26 Road 9-115, Daegu 41065, Republic of Korea
| | - Wha-Jung Kim
- GOONWORLD Corporate Research Institute, Dong-gu Inovalley 26 Road 9-115, Daegu 41065, Republic of Korea
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Jaramillo-Fierro X, Gaona S, Ramón J, Valarezo E. Porous Geopolymer/ZnTiO 3/TiO 2 Composite for Adsorption and Photocatalytic Degradation of Methylene Blue Dye. Polymers (Basel) 2023; 15:2697. [PMID: 37376343 DOI: 10.3390/polym15122697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
In this study, GP (geopolymer) and GTA (geopolymer/ZnTiO3/TiO2) geopolymeric materials were prepared from metakaolin (MK) and characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), energy dispersive X-rays (EDX), specific surface area (SSA), and point of zero charge (PZC). The adsorption capacity and photocatalytic activity of the compounds prepared in the form of pellets was determined by degradation of the methylene blue (MB) dye in batch reactors, at pH = 7.0 ± 0.2 and room temperature (20 °C). The results indicate that both compounds are highly efficient at adsorbing MB, with an average efficiency value of 98.5%. The Langmuir isotherm model and the pseudo second order kinetic model provided the best fits to the experimental data for both compounds. In the MB photodegradation experiments under UVB irradiation, GTA reached an efficiency of 93%, being higher than that achieved by GP (4%). Therefore, the incorporation of ZnTiO3/TiO2 in the geopolymeric matrix allowed GTA to achieve higher overall efficiency, by combining adsorption and photocatalysis, compared to the GP compound. The results indicate that the synthesized compounds could be used for up to five consecutive cycles for the removal of MB from wastewater through adsorption and/or photocatalysis processes.
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Affiliation(s)
- Ximena Jaramillo-Fierro
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
| | - Sneyder Gaona
- Ingeniería Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
| | - John Ramón
- Ingeniería Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
| | - Eduardo Valarezo
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
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Nadeem F, Zhang H, Tahir N, Zhang Z, Rani Singhania R, Shahzaib M, Ramazan H, Usman M, Ur Rahman M, Zhang Q. Advances in the catalyzed photo-fermentative biohydrogen production through photo nanocatalysts with the potential of selectivity, and customization. BIORESOURCE TECHNOLOGY 2023; 382:129221. [PMID: 37217146 DOI: 10.1016/j.biortech.2023.129221] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/16/2023] [Accepted: 05/19/2023] [Indexed: 05/24/2023]
Abstract
Photo nanocatalyst have shownpromise in a variety of fields, including biohydrogen production where their catalytic efficiency is related to size, surface-to-volume ratio, and increasing the number of atoms on the surface. They can harvest solar light to create electron-hole pairs which is the key mechanism to define its catalytic efficiency, thus requiring suitable excitation wavelength, band energy, and crystal imperfections. In this review, a discussion on the role of photo nanocatalysts to catalyze biohydrogen production has been carried out. Photo nanocatalysts feature a large bandgap, andhigh defect concentration, thus having the ability to be tuned for their characteristics. Customization of the photo nanocatalyst has been addressed. Mechanism of the photo nanocatalysts in catalyzing biohydrogen has been discussed. Limiting factors of photo nanocatalysts were highlighted and several recommendations have been made to enhance the effective utilization of these photo nanocatalysts to enhance photo-fermentative biohydrogen production from biomass wastes.
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Affiliation(s)
- Faiqa Nadeem
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002
| | - Huan Zhang
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002
| | - Nadeem Tahir
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002
| | - Zhiping Zhang
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002
| | - Reeta Rani Singhania
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Sustainable Environment Research Center, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Muhammad Shahzaib
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002
| | - Hina Ramazan
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002
| | - Muhammad Usman
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002
| | - Muneeb Ur Rahman
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002
| | - Quanguo Zhang
- Collaborative Innovation Center of Biomass Energy, Henan Agricultural University, Zhengzhou 450002.
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Green synthesis of Ag-TiO2 nanoparticles using turmeric extract and its enhanced photocatalytic activity under visible light. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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17
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Samuel SA, Chia MA, Yusufu WN, Dauda S, Japhet WS, Habila JD. Nitrogen forms and concentration influence the impact of titanium dioxide nanoparticles on the biomass and antioxidant enzyme activities of Microcystis aeruginosa. Arch Microbiol 2023; 205:177. [PMID: 37029289 DOI: 10.1007/s00203-023-03500-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/18/2023] [Accepted: 03/22/2023] [Indexed: 04/09/2023]
Abstract
Nanoparticles (NPs) are becoming more widely produced, used, and released into the aquatic environment. In aquatic ecosystems, these NPs affect different populations of photosynthesizing organisms, such as cyanobacteria. This study aimed to evaluate the effects of titanium dioxide (TiO2) NPs (48 mg l-1) combined with low (0.04 mM) and high (9 mM) concentrations of urea and nitrate on Microcystis aeruginosa. Microcystins (MCs) production and release were monitored in the cyanobacterium. The results showed that high urea concentration (9 mM) combined with TiO2 NPs inhibited growth, pigment, and malondialdehyde (MDA) content by 82%, 63%, and 47%, respectively. The treatment also increased the reactive oxygen species (ROS) and glutathione S-transferase (GST) activity by 40.7% and 67.7%, respectively. Similarly, low nitrate (0.04 mM) combined with TiO2 NPs inhibited growth by 40.3% and GST activity by 36.3% but stimulated pigment production and ROS concentration in M. aeruginosa. These responses suggest that high urea combined with TiO2.NPs and high nitrate combined with TiO2 NPs induced oxidative stress in cyanobacteria. The peroxidase (POD) activity of M. aeruginosa decreased by 17.7% with increasing urea concentrations. Our findings suggest that TiO2 NPs combined with changing nutrient (urea and nitrate) concentrations may adversely affect cyanobacterial development and antioxidant defense enzymes.
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Affiliation(s)
| | | | - Waetsi Nya Yusufu
- Department of Botany, Ahmadu Bello University, Zaria, Nigeria
- Department of Biological Sciences, Taraba State University, Jalingo 14, Nigeria
| | - Suleiman Dauda
- Department of Botany, Ahmadu Bello University, Zaria, Nigeria
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18
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Jaramillo-Fierro X, León R. Effect of Doping TiO 2 NPs with Lanthanides (La, Ce and Eu) on the Adsorption and Photodegradation of Cyanide-A Comparative Study. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13061068. [PMID: 36985962 PMCID: PMC10055693 DOI: 10.3390/nano13061068] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/10/2023] [Accepted: 03/11/2023] [Indexed: 06/01/2023]
Abstract
Free cyanide is a highly dangerous compound for health and the environment, so treatment of cyanide-contaminated water is extremely important. In the present study, TiO2, La/TiO2, Ce/TiO2, and Eu/TiO2 nanoparticles were synthesized to assess their ability to remove free cyanide from aqueous solutions. Nanoparticles synthesized through the sol-gel method were characterized by X-ray powder diffractometry (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier-transformed infrared spectroscopy (FTIR), diffuse reflectance spectroscopy (DRS), and specific surface area (SSA). Langmuir and Freundlich isotherm models were utilized to fit the adsorption equilibrium experimental data, and pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were used to fit the adsorption kinetics experimental data. Cyanide photodegradation and the effect of reactive oxygen species (ROS) on the photocatalytic process were investigated under simulated solar light. Finally, reuse of the nanoparticles in five consecutive treatment cycles was determined. The results showed that La/TiO2 has the highest percentage of cyanide removal (98%), followed by Ce/TiO2 (92%), Eu/TiO2 (90%), and TiO2 (88%). From these results, it is suggested that La, Ce, and Eu dopants can improve the properties of TiO2 as well as its ability to remove cyanide species from aqueous solutions.
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Affiliation(s)
- Ximena Jaramillo-Fierro
- Departamento de Química, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
| | - Ricardo León
- Maestría en Química Aplicada, Facultad de Ciencias Exactas y Naturales, Universidad Técnica Particular de Loja, San Cayetano Alto, Loja 1101608, Ecuador
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19
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Malinowska I, Kubica P, Madajski P, Ostrowski A, Gómez Polo C, Carvera L, Bednarski W, Zielińska-Jurek A. Synthesis, characterization, and application of 2D/2D TiO 2-GO-ZnFe 2O 4 obtained by the fluorine-free lyophilization method for solar light-driven photocatalytic degradation of ibuprofen. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:35929-35944. [PMID: 36538221 PMCID: PMC10039847 DOI: 10.1007/s11356-022-24587-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
In this study, we report the potential of 2D/2D TiO2-GO-ZnFe2O4 photocatalyst obtained using the fluorine-free lyophilization technique for the degradation of ibuprofen belonging to the group of active pharmaceutical ingredients (API). The improved ibuprofen degradation under simulated solar light was achieved in the presence of a composite of 2D TiO2 combined with GO and embedded ZnFe2O4, which additionally provides superparamagnetic properties and enables photocatalyst separation after the photodegradation process. After only 20 min of the photodegradation process in the presence of 2D/2D TiO2-GO-ZnFe2O4 composite, more than 90% of ibuprofen was degraded under simulated solar light, leading to non-toxic and more susceptible to biodegradation intermediates. At the same time, photolysis of ibuprofen led to the formation of more toxic intermediates. Furthermore, based on the photocatalytic degradation analysis, the degradation by-products and possible photodegradation pathways of ibuprofen were investigated. The photodegradation tests and electronic spin resonance analyses indicated the significant involvement of superoxide radicals and singlet oxygen in the ibuprofen photodegradation process.
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Affiliation(s)
- Izabela Malinowska
- Department of Process Engineering and Chemical Technology, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdansk, Poland
| | - Paweł Kubica
- Department of Analytical Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Piotr Madajski
- Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, 87-100, Toruń, Poland
| | - Adam Ostrowski
- Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179, Poznań, Poland
| | - Cristina Gómez Polo
- Departamento de Ciencias-INAMAT2, Universidad Pública de Navarra, Campus de Arrosadia, 31006, Pamplona, Spain
| | - Laura Carvera
- Departamento de Ciencias-INAMAT2, Universidad Pública de Navarra, Campus de Arrosadia, 31006, Pamplona, Spain
| | - Waldemar Bednarski
- Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179, Poznań, Poland
| | - Anna Zielińska-Jurek
- Department of Process Engineering and Chemical Technology, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdansk, Poland.
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20
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Potential of low-cost TiO 2-PVC composite in photoelectrocatalytic degradation of reactive orange 16 under visible light. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:47144-47157. [PMID: 36732455 DOI: 10.1007/s11356-023-25623-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 01/25/2023] [Indexed: 02/04/2023]
Abstract
In recent years, previously reported studies revealed a high efficiency of pollutant degradation by coupling photocatalysis and electrochemical processes (PECs) using titanium dioxide (TiO2) photoelectrode rather than using photocatalysis or electrocatalysis alone. However, some of the TiO2 photoelectrodes that have been reported were not cost-effective. This is due to the use of expensive chemicals and certain expensive equipment in the fabrication process, other than involving complicated preparation steps. Therefore, this study is aimed at investigating the PEC performance and stability of low-cost TiO2-polyvinyl chloride (TiO2-PVC) composite photoelectrode for Reactive Orange 16 (RO16) degradation. The materials characterisation using the ATR-FTIR, XRD and UV-Vis DRS proved that TiO2 and TiO2-PVC were successfully synthesised. The micrograph obtained for the surface characterisation using the FESEM showed that the smooth surface of freshly prepared photoelectrodes turned slightly rough with tiny pits formation after five continuous PEC processes. Nevertheless, the photoelectrode retained its original shape in good condition for further PEC processes. By PEC process, the fabricated photoelectrode showed 99.4% and 51.1% of colour and total organic carbon (TOC) removal, respectively, at optimised PEC parameters (1.0 mol L-1 NaCl concentration, 10 V applied voltage, 120 min degradation time and initial pH 2). Moreover, the fabricated photoelectrode demonstrated sufficient reusability potential (~ 96.3%) after five cycles of PEC processes. In summary, a low-cost and stable composite photoelectrode with high efficiency in RO16 degradation was successfully fabricated and could be potentially applied for other emerging pollutants degradation via the PEC degradation technique.
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Chen S, Hu YH. Color TiO 2 Materials as Emerging Catalysts for Visible-NIR Light Photocatalysis, A Review. CATALYSIS REVIEWS 2023. [DOI: 10.1080/01614940.2023.2169451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Shaoqin Chen
- Department of Materials Science and Engineering, Michigan Technological University, Houghton, Michigan, USA
| | - Yun Hang Hu
- Department of Materials Science and Engineering, Michigan Technological University, Houghton, Michigan, USA
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Fan K, Chen Q, Zhao J, Liu Y. Preparation of MnO 2-Carbon Materials and Their Applications in Photocatalytic Water Treatment. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:541. [PMID: 36770501 PMCID: PMC9921467 DOI: 10.3390/nano13030541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/17/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Water pollution is one of the most important problems in the field of environmental protection in the whole world, and organic pollution is a critical one for wastewater pollution problems. How to solve the problem effectively has triggered a common concern in the area of environmental protection nowadays. Around this problem, scientists have carried out a lot of research; due to the advantages of high efficiency, a lack of secondary pollution, and low cost, photocatalytic technology has attracted more and more attention. In the past, MnO2 was seldom used in the field of water pollution treatment due to its easy agglomeration and low catalytic activity at low temperatures. With the development of carbon materials, it was found that the composite of carbon materials and MnO2 could overcome the above defects, and the composite had good photocatalytic performance, and the research on the photocatalytic performance of MnO2-carbon materials has gradually become a research hotspot in recent years. This review covers recent progress on MnO2-carbon materials for photocatalytic water treatment. We focus on the preparation methods of MnO2 and different kinds of carbon material composites and the application of composite materials in the removal of phenolic compounds, antibiotics, organic dyes, and heavy metal ions in water. Finally, we present our perspective on the challenges and future research directions of MnO2-carbon materials in the field of environmental applications.
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Affiliation(s)
- Kun Fan
- Chinese Research Academy of Environment Sciences, Beijing 100012, China
| | - Qing Chen
- Chinese Research Academy of Environment Sciences, Beijing 100012, China
- Ecological and Environmental Protection Company, China South-to-North Water Diversion Corporation Limited, Beijing 100036, China
| | - Jian Zhao
- Chinese Research Academy of Environment Sciences, Beijing 100012, China
| | - Yue Liu
- Chinese Research Academy of Environment Sciences, Beijing 100012, China
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Nema A, Kaul DS, Mukherjee K. Photoactive catalysts for treatment of air pollutants: a bibliometric analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:9311-9330. [PMID: 36472747 DOI: 10.1007/s11356-022-24267-z] [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: 09/06/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
In recent years, photocatalysts are becoming attractive to researchers in exploring their application for treatment of air pollutants. Exposure to ultra-violet visible (UV-VIS) light on photocatalysts often makes them active in decomposing various toxic materials into less or environment-friendly products. Thus, identification, as well as simple synthesis and processing of photocatalysts, could ultimately lead to technologies for the cost-effective mitigation of environmental hazards. A bibliometric analysis has been carried out here to understand and assess the development in photocatalyst research. The data retrieved from the Scopus database on the topic for 2000-2020 were analyzed to investigate the research activities of the past to foresight the future. Various facets of bibliometry were investigated to produce this holistic article. The contribution of various countries, institutions, and authors were investigated. Numerous facets of photocatalyst such as types of photocatalysts, their modification through metal and non-metal doping, their pollutants treatment potency, types of reactors for photocatalysis, factors influencing treatment performance, and models used for designing reactors were examined. In brevity, substantial growth was observed in the last two decades. Contribution of China, the USA, Japan, and India were notable. Chinese universities contributed majorly to the research. Applied Catalysis B: Environmental Journal was the topic's main journal and Titanium dioxide was the hotspot in photocatalytic research. The research development, problem disclosure, adopted strategies, and materials explored on the photocatalysis for air pollution treatment over recent years across the world could be insightful to the researchers and eventually will be beneficial to formulate new research strategies.
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Affiliation(s)
- Akanksha Nema
- Department of Civil Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, India
| | - Daya Shankar Kaul
- Department of Civil Engineering, School of Technology, Pandit Deendayal Energy University, Gandhinagar, India.
| | - Kalisadhan Mukherjee
- Department of Chemistry, School of Technology, Pandit Deendayal Energy University, Gandhinagar, India
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24
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Ganganboina AB, Khoris IM, Konno A, Li TC, Okamoto A, Park EY. CdSe-Co 3O 4@TiO 2 nanoflower-based photoelectrochemical platform probing visible light-driven virus detection. Mikrochim Acta 2023; 190:46. [PMID: 36604350 PMCID: PMC9816014 DOI: 10.1007/s00604-022-05623-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 12/14/2022] [Indexed: 01/07/2023]
Abstract
The design and construction of a visible light-driven photoelectrochemical (PEC) device is described based on a CdSe-Co3O4@TiO2 nanoflower (NF). Moreover, an application to the ultrasensitive detection of viruses, such as hepatitis E virus (HEV), HEV-like particles (HEV-LPs), and SARS-CoV-2 spike protein in complicated lysate solution, is demonstrated. The photocurrent response output of a PEC device based on CdSe-Co3O4@TiO2 is enhanced compared with the individual components, TiO2 and CdSe-Co3O4. This can be attributed to the CdSe quantum dot (QD) sensitization effect and strong visible light absorption to improve overall system stability. A robust oxygen-evolving catalyst (Co3O4) coupled at the hole-trapping site (CdSe) extends the interfacial carrier lifetime, and the energy conversion efficiency was improved. The effective hybridization between the antibody and virus resulted in a linear relationship between the change in photocurrent density and the HEV-LP concentration ranging from 10 fg mL-1 to 10 ng mL-1, with a detection limit of 3.5 fg mL-1. This CdSe-Co3O4@TiO2-based PEC device achieved considerable sensitivity, good specificity, and acceptable stability and demonstrated a significant ability to develop an upgraded device with affordable and portable biosensing capabilities.
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Affiliation(s)
- Akhilesh Babu Ganganboina
- International Center for Young Scientists ICYS-NAMIKI, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 Japan
| | - Indra Memdi Khoris
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya Suruga-Ku, Shizuoka, 422-8529 Japan
| | - Akinori Konno
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu, Shizuoka 432-8561 Japan
| | - Tian-Cheng Li
- Department of Virology 2, National Institute of Infectious Diseases, 4-7-1 Gakuen, Musashimurayama-Shi, Tokyo, 208-0011 Japan
| | - Akihiro Okamoto
- International Center for Materials Nanoarchitectonics (WPI-MANA) and Center for Sensor and Actuator Material, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 Japan
| | - Enoch Y. Park
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya Suruga-Ku, Shizuoka, 422-8529 Japan ,Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya Suruga-Ku, Shizuoka, 422-8529 Japan
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25
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Zhang S, Cai M, Wu J, Wang Z, Lu X, Li K, Lee JM, Min Y. photocatalytic degradation of TiO2 via incorporating Ti3C2 MXene for methylene blue removal from water. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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26
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Al-Amrani WA, Hanafiah MAKM, Mohammed AHA. A comprehensive review of anionic azo dyes adsorption on surface-functionalised silicas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:76565-76610. [PMID: 36166120 DOI: 10.1007/s11356-022-23062-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Surface -functionalised silica networks are advanced adsorbents. They have been given much attention for treating wastewater using the adsorption technique due to the silanol reactivity, resulting in strong binding affinities towards many pollutants. This review discusses the removal of anionic azo dyes utilising various functional groups such as amines, surfactants, polymers, macrocyclic, and other chelating groups functionalised on silica's surface. This review also reveals the steadily increasing interest in surface-functionalised silicas as adsorbents, emphasising the scholarly advancements in this field as a platform for future research. For that, adsorption capacities with different experimental conditions have been compared. The possible adsorption mechanisms, rate-limiting step, and factors affecting the anionic azo dye adsorption process have been comprehensively discussed. This review discloses that adsorbent characteristics such as porosity and functional groups, besides structural properties of an anionic azo dye, significantly affect adsorption. The adsorption process followed the Langmuir isotherm and pseudo-second-order models, with a predominantly spontaneous and endothermic nature. Multiple interactions, including electrostatic interaction, π-π interactions, and hydrogen bonding, are observed between dyes and functionalised silicas, indicating the adsorption process's complexity. Regeneration and cost-economic analysis are also presented to provide a roadmap for sustainable improvements. Chemical and biological regeneration techniques restore > 80% of the spent functionalised silicas. There is a significant opportunity to improve their efficiencies and regenerability, resulting in surface-functionalised silicas being used commercially instead of only in the laboratory. Finally, future research has been proposed by identifying current research gaps, particularly concerning the application of functionalised silicas in wastewater treatment.
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Wang L, Li M, Pei L, Liu T, Zhang T, Ao D. Pt-N Co-Modified TiO 2 Nanotube Electrode Photoelectrocatalytic Degradation of Oxytetracycline in Simulated Wastewater. TOXICS 2022; 10:635. [PMID: 36355927 PMCID: PMC9697761 DOI: 10.3390/toxics10110635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/18/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Using photodeposition and plasma, Pt-N co-modified TiO2 nanotube electrodes were created. Several techniques, such as SEM, XRD, UV-VIS-DRS, XPS, and PL, were used to analyze the electrode shape, crystalline structure, light absorption range, elemental composition, and photogenerated carrier recombination efficiency. Using the electrochemical workstation, EIS and I-t were utilized to examine the electrochemical characteristics. The results indicated that the diameter of the TiO2 nanotube tubes was around 90 nm, and that the photodeposition duration affected the amount of Pt particles deposited. The deposited Pt particles efficiently reduced the photogenerated carrier complexation rate of the N-TiO2 nanotube electrode, contributing to the separation of electron-hole pairs and light utilization. Electrochemical studies indicated that Pt-N co-modified TiO2 increased the electrode's oxidation and electrical conductivity, as well as its photoelectrocatalytic capacity. Oxytetracycline degradation in simulated wastewater by a Pt-N co-modified TiO2 nanotube electrode revealed the exceptional PEC activity, and the oxytetracycline degradation processes followed primary kinetics. •O2- and •OH played a significant role in the photoelectrocatalytic degradation of oxytetracycline, resulting in a novel method for oxytetracycline degradation.
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Affiliation(s)
- Liming Wang
- College of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China
| | - Mengyao Li
- College of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China
| | - Liang Pei
- Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Tingting Liu
- College of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China
| | - Tian Zhang
- College of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China
| | - Dong Ao
- College of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China
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28
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Fatimah S, Nashrah N, Tekin K, Ko YG. Improving Corrosion and Photocatalytic Properties of Composite Oxide Layer Fabricated by Plasma Electrolytic Oxidation with NaAlO 2. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7055. [PMID: 36295137 PMCID: PMC9605281 DOI: 10.3390/ma15207055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/01/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
The present work dealt with the development of a protective and functional oxide layer via one-step plasma electrolytic oxidation (PEO) on pure titanium by employing highly concentrated aluminate solution in a short processing time. A compositional analysis showed that Al2TiO5 active compound was formed successfully by means of Al2O3 incorporation when TiO2 was spontaneously developed with the aid of plasma swarms. The electrochemical performance showed the protective and functional capabilities of the layer, which was attributed to the respective amounts of Al2O3 and Al2TiO5. Such capabilities were achieved in a short processing time, thus reducing the total production cost.
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29
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Abid M, Sayegh S, Iatsunskyi I, Coy E, Lesage G, Ramanavicius A, Ben Haj Amara A, Bechelany M. Design of halloysite-based nanocomposites by electrospinning for water treatment. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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30
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Jin F, Zhao Z. Reactivity of anatase (001) surface from first-principles many-body Green's function theory. RSC Adv 2022; 12:28178-28184. [PMID: 36320267 PMCID: PMC9530998 DOI: 10.1039/d2ra05058g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/16/2022] [Indexed: 11/06/2022] Open
Abstract
The anatase (001) surface has attracted a lot of interest in surface science due to its excellent performance. However, its reactivity is under debate since it can undergo a (1 × 4) reconstruction. Herein, we applied the many-body Green's function theory to investigate the electronic properties and excitons as well as the water adsorption behavior of the (1 × 4) unreconstructed anatase (001) surface and two reconstructed patterns, namely ADM and AOM. Our results revealed that the high reactivity of the (001) surface is probably not relevant to the reconstructed shape. The unreconstructed (001) surface and reconstructed ADM surface were very reactive for dissociating H2O molecules among three surfaces, but the lower-energy singlet exciton for ADM was completely confined within the inner atomic layers in TiO2, which is unfavorable for hole transfer to the reactant on the surface. Also, the required photon energy for initiating photochemical reactions on the reconstructed ADM surface should be higher than for the unreconstructed (001) surface, implying it is more difficult for the reaction to happen on the former surface. The unreconstructed (001) surface exhibited the highest reactivity due to the smaller optical absorption edge and the photoholes distributed on surface sites. The unreconstructed (001) surface seems to have superior reactivity than the reconstructed shapes.![]()
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Affiliation(s)
- Fan Jin
- Department of Applied Chemistry, Yuncheng UniversityYuncheng 044000China
| | - Zhichao Zhao
- Department of Science Technology and Industry, Yuncheng UniversityYuncheng 044000China
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31
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Ikram M, Rasheed F, Haider A, Naz S, Ul-Hamid A, Shahzadi A, Haider J, Shahzadi I, Hayat S, Ali S. Photocatalytic and antibacterial activity of graphene oxide/cellulose-doped TiO 2 quantum dots: in silico molecular docking studies. NANOSCALE ADVANCES 2022; 4:3764-3776. [PMID: 36133332 PMCID: PMC9470022 DOI: 10.1039/d2na00383j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 07/27/2022] [Indexed: 06/16/2023]
Abstract
Graphene oxide (GO) and cellulose nanocrystal (CNC)-doped TiO2 quantum dots (QDs) were effectively synthesized by employing the co-precipitation method for the degradation of dyes and antimicrobial applications. A series of characterizations, i.e., XRD, FTIR, UV-visible spectroscopy, EDS, FE-SEM, and HR-TEM, was used to characterize the prepared samples. A reduction in PL intensity was observed, while the band gap energy (E g) decreased from 3.22 to 2.96 eV upon the incorporation of GO/CNC in TiO2. In the Raman spectra, the D and G bands were detected, indicating the presence of graphene oxide in the composites. Upon doping, the crystallinity of TiO2 increased. HR-TEM was employed to estimate the interlayer d-spacing of the nanocomposites, which matched well with the XRD data. The photocatalytic potential of the prepared samples was tested against methylene blue, methylene violet, and ciprofloxacin (MB:MV:CF) when exposed to visible light for a certain period. The antibacterial activity of GO/CNC/TiO2 QDs against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) bacteria in vitro was tested to determine their potential for medicinal applications. The molecular docking investigations of CNC-TiO2 and GO/CNC-doped TiO2 against DNA gyrase and FabI from E. coli and S. aureus were found to be consistent with the results of the in vitro bactericidal activity test. We believe that the prepared nanocomposites will be highly efficient for wastewater treatment and antimicrobial activities.
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Affiliation(s)
- Muhammad Ikram
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore Lahore 54000 Punjab Pakistan
| | - Fahad Rasheed
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University 14 Ali Road Lahore Pakistan
| | - Ali Haider
- Department of Clinical Sciences, Faculty of Veterinary and Animal Sciences, Muhammad Nawaz Shareef University of Agriculture Multan 6000 Pakistan
| | - Sadia Naz
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences Tianjin 300308 China
| | - Anwar Ul-Hamid
- Core Research Facilities, King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia
| | - Anum Shahzadi
- Faculty of Pharmacy, The University of Lahore Lahore Pakistan
| | - Junaid Haider
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences Tianjin 300308 China
| | - Iram Shahzadi
- Punjab University College of Pharmacy, University of the Punjab 54000 Pakistan
| | - Shaukat Hayat
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University 14 Ali Road Lahore Pakistan
| | - Salamat Ali
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University 14 Ali Road Lahore Pakistan
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32
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Degradation of Antibiotics via UV-Activated Peroxodisulfate or Peroxymonosulfate: A Review. Catalysts 2022. [DOI: 10.3390/catal12091025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The ultraviolet (UV)/H2O2, UV/O3, UV/peroxodisulfate (PDS) and UV/peroxymonosulfate (PMS) methods are called UV-based advanced oxidation processes. In the UV/H2O2 and UV/O3 processes, the free radicals generated are hydroxyl radicals (•OH), while in the UV/PDS and UV/PMS processes, sulfate radicals (SO4•−) predominate, accompanied by •OH. SO4•− are considered to be more advantageous than •OH in degrading organic substances, so the researches on activation of PDS and PMS have become a hot spot in recent years. Especially the utilization of UV-activated PDS and PMS in removing antibiotics in water has received much attention. Some influencing factors and mechanisms are constantly investigated and discussed in the UV/PDS and UV/PMS systems toward antibiotics degradation. However, a systematic review about UV/PDS and UV/PMS in eliminating antibiotics is lacking up to now. Therefore, this review is intended to present the properties of UV sources, antibiotics, and PDS (PMS), to discuss the application of UV/PDS (PMS) in degrading antibiotics from the aspects of effect, influencing factors and mechanism, and to analyze and propose future research directions.
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Bulavinets T, Yaremchuk I, Bobitski Y, Barylyak A. Synthesis and photocatalytic efficiency of plasmonic Ag/TiO2:S nanosystems. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02593-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Singh T, Sharma S, Singh R, Pal DB, Ahmad I, Alam MM, Singh NL, Srivastava M, Srivastava N. Sustainable approaches towards green synthesis of TiO 2 nanomaterials and their applications in photo-catalysis mediated sensingtomonitor environmental pollutions. LUMINESCENCE 2022. [PMID: 35997211 DOI: 10.1002/bio.4370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 08/16/2022] [Accepted: 08/19/2022] [Indexed: 11/06/2022]
Abstract
Nanomaterials are gaining enormous interests owing to their novel applications that have been explored nearly in every field of our contemporary society. In this scenario, preparations of nanomaterials following green routes have attracted widespread attention in terms of sustainable, reliable and environmentally friendly practice to produce diverse nanostructures. In this review, we summarized the fundamental processes and mechanisms of green synthesis approaches of TiO2 NPs. We explore the role of plants and microbes as natural bioresources to prepare TiO2 NPs. Particularly, focused have been made to explore the potential of TiO2 based nanomaterials to design variety of sensing platforms by exploiting the photo-catalysis efficiency under the influence of light source. Such types of sensing can of massive importance to monitor the environmental pollutions and thereby to invent advanced strategies to remediate hazardous pollutants to offer clean environment.
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Affiliation(s)
- Tripti Singh
- School of Biosciences IMS Ghaziabad UC Campus, Ghaziabad, Uttar Pradesh, India
| | - Shalini Sharma
- School of Biosciences IMS Ghaziabad UC Campus, Ghaziabad, Uttar Pradesh, India
| | - Rajeev Singh
- Department of Environmental Studies, Satyawati College, University of Delhi, Delhi, India
| | - Dan Bahadur Pal
- Department of Chemical Engineering, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India
| | - Irfan Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Mohammad Mahtab Alam
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | - Nand Lal Singh
- Department of chemistry, Banaras Hindu University (BHU), Varanasi, U.P., India
| | - Manish Srivastava
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, India
| | - Neha Srivastava
- Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, India
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35
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Shen Y, Yuan Z, Cheng F, Cui Z, Ma D, Bai Y, Zhao S, Deng J, Li E. Preparation and characterization of ZnO/graphene/graphene oxide/multi-walled carbon nanotube composite aerogels. Front Chem 2022; 10:992482. [PMID: 36046726 PMCID: PMC9421254 DOI: 10.3389/fchem.2022.992482] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 07/21/2022] [Indexed: 11/13/2022] Open
Abstract
ZnO/Graphene (G)/Graphene Oxide (GO)/Multi-walled Carbon Nanotube (MCNT) composite aerogels with a three-dimensional porous structure were prepared by the sol-gel method under average temperature and alkaline conditions, combined with freeze-drying process and heat treatment process. The photocatalytic degradation of Rhodamine B (RhB) was mainly studied. The scanning electron microscope (SEM) test results showed that the morphology uniformity of the ZnO/G/GO/MCNT composite aerogel was significantly enhanced, which effectively solving the agglomeration problem of MCNT and ZnO. The photocatalytic degradation test results of RhB show that due to the synergistic effect of physical adsorption and photocatalytic degradation, the total degradation efficiency of RhB by ZnO/G/GO/MCNT could reach 86.8%, which is 3.3 times higher than that of ZnO. In addition, the synergistic effect of ZnO and G effectively hinders the recombination of photo-generated electron-hole pairs and enhances photocatalytic activity. The ZnO/G/GO/MCNT composite aerogel can be applied in the visible light catalytic degradation of water pollution.
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Affiliation(s)
- Yang Shen
- School of Science, Xi’an University of Technology, Xi’an, China
- *Correspondence: Yang Shen, ; Zhen Cui, ; Enling Li,
| | - Zhihao Yuan
- School of Science, Xi’an University of Technology, Xi’an, China
| | - Fengjiao Cheng
- School of Electrical Engineering, Xi’an University of Technology, Xi’an, China
| | - Zhen Cui
- School of Automation and Information Engineering, Xi’an University of Technology, Xi’an, China
- *Correspondence: Yang Shen, ; Zhen Cui, ; Enling Li,
| | - Deming Ma
- School of Science, Xi’an University of Technology, Xi’an, China
| | - Yueyue Bai
- School of Science, Xi’an University of Technology, Xi’an, China
| | - Shuqing Zhao
- School of Science, Xi’an University of Technology, Xi’an, China
| | - Jieyao Deng
- School of Science, Xi’an University of Technology, Xi’an, China
| | - Enling Li
- School of Science, Xi’an University of Technology, Xi’an, China
- *Correspondence: Yang Shen, ; Zhen Cui, ; Enling Li,
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Z-scheme Au@TiO2/Bi2WO6 heterojunction as efficient visible-light photocatalyst for degradation of antibiotics. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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37
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Valadez-Renteria E, Oliva J, Rodriguez-Gonzalez V. A sustainable and green chlorophyll/TiO 2:W composite supported on recycled plastic bottle caps for the complete removal of Rhodamine B contaminant from drinking water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 315:115204. [PMID: 35523072 DOI: 10.1016/j.jenvman.2022.115204] [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: 12/13/2021] [Revised: 04/10/2022] [Accepted: 04/28/2022] [Indexed: 06/14/2023]
Abstract
This investigation reports the photocatalytic performance of the tungsten doped titania (TiO2:W or TW) with and without coating of chlorophyll (Chl) for the removal of the RhB dye from the drinking water. These particles were also supported on recycled plastic bottle caps (Bcap) to form other photocatalytic composites (TW/Bcap and TW + Chl/Bcap). The SEM images demonstrated that the TW particles without Chl had irregular shapes and sizes of 0.8-12 μm. The TW particles coated by the Chl presented shapes of quasi-rounded grains and smaller particle sizes of 0.8-1.8 μm. The photocatalytyic experiments showed that the photocatalyst powders containing Chl removed completely the RhB dye from the water after 2h under UV-VIS light, while the photocatalyst without Chl removed a maximum of 95% of the RhB. Interestingly, the TW/Bcap and TW + Chl/Bcap composites removed 94-100% of the RhB after 2h. Those ones removed such dye by photocatalysis and by physical adsorption at the same time (as confirmed by the absorbance and FTIR measurements), therefore, the removal of RhB was still very high. Scavenger experiments were also achieved and found that the •OH radicals are the main oxidizing species generated by the photocatalysts with and without Chl. The •O2- radicals and holes (h+) were the secondary oxidizing species. The presence of the chlorophyll on the photocatalyst increased in general the light absorption and the photocurrent. Overall, our work demonstrated that making composites with recycled plastic bottle caps is a feasible alternative to remove dyes from contaminated drinking water with high efficiency and low cost.
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Affiliation(s)
- E Valadez-Renteria
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico
| | - J Oliva
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico.
| | - V Rodriguez-Gonzalez
- CONACyT-División de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica A. C., 78216, San Luis Potosí, SLP, Mexico.
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Nadeem MS, Munawar T, Mukhtar F, Batool S, Hasan M, Akbar UA, Hakeem AS, Iqbal F. Energy-levels well-matched direct Z-scheme ZnNiNdO/CdS heterojunction for elimination of diverse pollutants from wastewater and microbial disinfection. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:50317-50334. [PMID: 35229262 DOI: 10.1007/s11356-022-19271-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 02/13/2022] [Indexed: 06/14/2023]
Abstract
Energy-levels well-matched direct Z-scheme ZnNiNdO/CdS heterojunction was successfully fabricated using facile co-precipitation and ultra-sonication techniques and characterized with XRD, FTIR, Raman, PL, UV-vis, and FE-SEM. The XRD diffractograms confirmed the co-doping of Ni-Nd in ZnO and the formation of heterostructured nanocomposite. FTIR and Raman data showed the presence of metal-oxygen vibration and optical phonon modes of ZnO and CdS. FE-SEM images exhibited the network type morphology. The energy bandgap was redshifted by co-doping (3.37-2.9 eV) and was further reduced (2.6 eV) by making a composite with CdS. The ZnNiNdO/CdS catalyst degraded 99.7, 49, 96.6, 98.6, and 98.6% methylene blue (MB), p-nitroaniline (P-Nitro), methyl orange (MO), methyl red (MR), and rhodamine B (RhB) dyes under 50 min sunlight irradiation. Moreover, ZnNiNdO/CdS showed intense inhibition activity towards Staphylococcus aureus, Escherichia coli, Proteus vulgaris, and Pseudomonas aeruginosa bacterial strains with maximum inhibition zone diameters 30, 33, 27, and 31 mm, respectively. The synergistic effects arising from band alignment can lead to efficient vectorial charge separation, transportation, and lower recombination of photoinduced charge carriers, ultimately boosting photocatalytic and antibacterial performance. The ZnNiNdO/CdS photocatalyst has higher stability up to the 7th cycle towards MB dye with ~ 5% deficit in degradation efficiency. The higher generation of superoxide and hydroxyl radical was confirmed by species trapping experiments responsible for photodegradation of dyes molecules. Furthermore, the results showed that the photocatalytic and antibacterial performance of pristine ZnO can be enhanced by co-doping and tuning energy bandgap.
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Affiliation(s)
| | - Tauseef Munawar
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Faisal Mukhtar
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Sana Batool
- Institute of Bio-Chemistry, Bio-Technology, and Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Murtaza Hasan
- Institute of Bio-Chemistry, Bio-Technology, and Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan
| | - Usman Ali Akbar
- Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Abbas Saeed Hakeem
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Faisal Iqbal
- Institute of Physics, The Islamia University of Bahawalpur, Bahawalpur, 63100, Pakistan.
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Interaction Mechanisms and Application of Ozone Micro/Nanobubbles and Nanoparticles: A Review and Perspective. NANOMATERIALS 2022; 12:nano12121958. [PMID: 35745296 PMCID: PMC9228162 DOI: 10.3390/nano12121958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/26/2022] [Accepted: 06/02/2022] [Indexed: 11/16/2022]
Abstract
Ozone micro/nanobubbles with catalytic processes are widely used in the treatment of refractory organic wastewater. Micro/nanobubble technology overcomes the limitations of ozone mass transfer and ozone utilization in the application of ozone oxidation, and effectively improves the oxidation efficiency of ozone. The presence of micro/nanobubbles keeps the catalyst particles in a dynamic discrete state, which effectively increases the contact frequency between the catalyst and refractory organic matter and greatly improves the mineralization efficiency of refractory organic matter. This paper expounds on the characteristics and advantages of micro/nanobubble technology and summarizes the synergistic mechanism of microbubble nanoparticles and the mechanism of catalyst ozone micro/nanobubble systems in the treatment of refractory organics. An interaction mechanism of nanoparticles and ozone microbubbles is suggested, and the proposed theories on ozone microbubble systems are discussed with suggestions for future studies on systems of nanoparticles and ozone microbubbles.
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Removal of Chloroacetanilide Herbicides from Water Using Heterogeneous Photocatalysis with TiO2/UV-A. Catalysts 2022. [DOI: 10.3390/catal12060597] [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
Chloroacetanilide herbicides are widely used in the agricultural sector throughout the world. Because of their poor biodegradability, high water solubility, and long persistence, chloroacetanilide herbicides have a high potential to contaminate water, and conventional water treatment processes do not ensure sufficient removal. Therefore, heterogeneous photocatalysis using TiO2/UV-A was investigated for the degradation of alachlor, acetochlor, and metolachlor from water. Two commercially available TiO2 (P25 and AV-01) were used as photocatalysts. Different experimental setups were also tested. In addition, the toxicity of single herbicides and mixtures of their photocatalytic degradation products to the freshwater alga Chlorella kessleri was investigated via a growth inhibition test. The maximum removal efficiency for alachlor, acetochlor, and metolachlor was 97.5%, 93.1%, and 98.2%, respectively. No significant differences in the removal efficiency of chloroacetanilide herbicides were observed for the photocatalysts used. Although the concentrations of all herbicides during photocatalysis decreased, the toxicity of the resulting mixtures of degradation products increased or remained the same, indicating the formation of toxic degradation products.
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Photocatalytic Degradation of Paracetamol in Aqueous Medium Using TiO2 Prepared by the Sol–Sel Method. Molecules 2022; 27:molecules27092904. [PMID: 35566255 PMCID: PMC9099495 DOI: 10.3390/molecules27092904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/22/2022] [Accepted: 04/28/2022] [Indexed: 12/04/2022] Open
Abstract
Two titania photocatalysts have been prepared using the sol-gel method using TiCl4 as a precursor, and two different alcohols, namely, ethanol or propanol (Et or Pr). The main aim of this work was to study the effect of the nature of the alcohol on the chemical, structural and photocatalytic properties for paracetamol photodegradation of the final solids. The TiCl4/alcohol molar ratio to obtain the corresponding alkoxides (TiEt and TiPr) was 1/10. These alkoxides were calcined at 400 °C to prepare the oxide catalysts (named as TiEt400 and TiPr400). Powder X-ray diffraction (PXRD) of the original samples showed the presence of anatase diffraction peaks in sample TiPr, while TiEt is a completely amorphous material. Contrary to commercial TiO2-P25, the PXRD diagrams of the calcined samples showed anatase as the exclusive crystalline phase in both solids. The specific surface area (SBET) of sample TiPr400 was larger than that of sample TiEt400, and both larger than that of TiO2-P25. The three solids have been tested in the photodegradation of paracetamol in aqueous solution. It has been established that the alcohol used influences the properties and catalytic activity of the final oxides. The synthesized solids exhibit a higher activity than commercial TiO2-P25, because of their structural characteristics and larger SBET.
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Hosseini-Sarvari M, Jafari F, Dehghani A. The study of TiO2/Cu2O nanoparticles as an efficient nanophotocalyst toward surface adsorption and photocatalytic degradation of methylene blue. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02474-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Photosensitized Thermoplastic Nano-Photocatalysts Active in the Visible Light Range for Potential Applications Inside Extraterrestrial Facilities. NANOMATERIALS 2022; 12:nano12060996. [PMID: 35335809 PMCID: PMC8948973 DOI: 10.3390/nano12060996] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/10/2022] [Accepted: 03/15/2022] [Indexed: 02/04/2023]
Abstract
Among different depollution methods, photocatalysis activated by solar light is promising for terrestrial outdoor applications. However, its use in underground structures and/or microgravity environments (e.g., extraterrestrial structures) is forbidden. In these cases, there are issues related to the energy emitted from the indoor lighting system because it is not high enough to promote the photocatalytic mechanism. Moreover, microgravity does not allow the recovery of the photocatalytic slurry from the depolluted solution. In this work, the synthesis of a filmable nanocomposite based on semiconductor nanoparticles supported by photosensitized copolyacrylates was performed through a bulk in situ radical copolymerization involving a photosensitizer macromonomer. The macromonomer and the nanocomposites were characterized through UV-Vis, fluorescence and NMR spectroscopies, gel permeation chromatography and thermogravimetric analysis. The photocatalytic activity of the sensitized nanocomposites was studied through photodegradation tests of common dyes and recalcitrant xenobiotic pollutants, employing UV-Vis and visible range (λ > 390 nm) light radiations. The sensitized nanocomposite photocatalytic performances increased about two times that of the unsensitized nanocomposite and that of visible range light radiation alone (>390 nm). The experimental data have shown that these new systems, applied as thin films, have the potential for use in indoor deep underground and extraterrestrial structures.
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Aigbe UO, Osibote OA. Fluoride ions sorption using functionalized magnetic metal oxides nanocomposites: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:9640-9684. [PMID: 34997491 DOI: 10.1007/s11356-021-17571-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
Fluoride is an anionic pollutant found superfluous in surface or groundwater as a result of anthropogenic actions from improper disposal of industrial effluents. In drinking water, superfluous fluoride has been revealed to trigger severe health problems in humans. Hence, developing a comprehensive wastewater decontamination process for the effective management and preservation of water contaminated with fluoride is desirable, as clean water demand is anticipated to intensify considerably over the upcoming years. In this regard, there have been increased efforts by researchers to create novel magnetic metal oxide nanocomposites which are functionalized for the remediation of wastewater owing to their biocompatibility, cost-effectiveness, relative ease to recover and reuse, non-noxiousness, and ease to separate from solutions using a magnetic field. This review makes an all-inclusive effort to assess the effects of experimental factors on the sorption of fluoride employing magnetic metal oxide nanosorbents. The removal efficiency of fluoride ions onto magnetic metal oxides nanocomposites were largely influenced by the solution pH and ions co-existing with fluoride. Overall, it was noticed from the reviewed researches that the maximum sorption capacity using various metal oxides for fluoride sorption was in the order of aluminium oxides >cerium oxides > iron oxides > magnesium oxides> titanium oxides, and most sorption of fluoride ions was inhibited by the existence of phosphate trailed by sulphate. The mechanism of fluoride sorption onto various sorbents was due to ion exchange, electrostatic attraction, and complexation mechanism.
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Affiliation(s)
- Uyiosa Osagie Aigbe
- Department of Mathematics and Physics, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa.
| | - Otolorin Adelaja Osibote
- Department of Mathematics and Physics, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town, South Africa
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45
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Photocatalytic H2 Production on Au/TiO2: Effect of Au Photodeposition on Different TiO2 Crystalline Phases. J 2022. [DOI: 10.3390/j5010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this work, we investigated the role of the crystalline phases of titanium dioxide in the solar photocatalytic H2 production by the reforming of glycerol, focusing the attention on the influence of photodeposited gold, as a metal co-catalyst, on TiO2 surface. We correlated the photocatalytic activity of 1 wt% Au/TiO2 in anatase, rutile, and brookite phases with the structural and optical properties determined by Raman spectroscopy, N2 adsorption–desorption measurements, UV–vis Diffuse Reflectance Spectroscopy (UV–vis DRS), X-ray photoelectron spectroscopy (XPS), Photoluminescence spectroscopy (PL), and Dynamic Light scattering (DLS). The best results (2.55 mmol H2 gcat−1 h−1) were obtained with anatase and gold photodeposited after 30 min of solar irradiation. The good performance of Au/TiO2 in anatase form and the key importance of the strong interaction between gold and the peculiar crystalline phase of TiO2 can be a starting point to efficiently improve photocatalysts design and experimental conditions, in order to favor a green hydrogen production through solar photocatalysis.
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Mariah MAA, Vonnie JM, Erna KH, Nur’Aqilah NM, Huda N, Abdul Wahab R, Rovina K. The Emergence and Impact of Ethylene Scavengers Techniques in Delaying the Ripening of Fruits and Vegetables. MEMBRANES 2022; 12:117. [PMID: 35207039 PMCID: PMC8877706 DOI: 10.3390/membranes12020117] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/04/2022] [Accepted: 01/10/2022] [Indexed: 02/04/2023]
Abstract
As the top grocery list priorities, the primary challenge when purchasing fruits and vegetables from supermarkets is obtaining fresh, minimally processed perishable goods. This source of diet is critical for obtaining vitamins, minerals, antioxidants, and fibres. However, the short shelf life caused by moisture content in rapid deterioration and decay caused by microbial growth, results in unappealing appearances. Fruits and vegetables undergo ripening and eventually the ageing process, in which the tissues of the plants degrade. Even after harvesting, numerous biological processes occur, generating a significant variation of ethylene production along with respiration rates between fruits and vegetables. Thus, the utilization of ethylene scavengers in food packaging or films has been revealed to be beneficial. The synergistic effects of these biomaterials have been demonstrated to reduce microorganisms and prolong the shelf life of greens due to antimicrobial activity, oxygen scavenging capacity, enzyme immobilization, texture enhancers, and nutraceuticals. The current review fills this void by discussing the most recent advances in research on ethylene scavengers and removal mechanisms of ethylene, including oxidation in fruit and vegetable packaging. The application and advantages of ethylene scavengers in packaging are then discussed with the addition of how the efficiency related to ethylene scavengers can be increased through atmospheric packaging tools. In this context, the article discusses characteristics, types of applications, and efficacy of ethylene control strategies for perishable commodities with the inclusion of future implications.
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Affiliation(s)
- Mohd Affandy Aqilah Mariah
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (M.A.A.M.); (J.M.V.); (K.H.E.); (N.M.N.’A.); (N.H.)
| | - Joseph Merillyn Vonnie
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (M.A.A.M.); (J.M.V.); (K.H.E.); (N.M.N.’A.); (N.H.)
| | - Kana Husna Erna
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (M.A.A.M.); (J.M.V.); (K.H.E.); (N.M.N.’A.); (N.H.)
| | - Nasir Md Nur’Aqilah
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (M.A.A.M.); (J.M.V.); (K.H.E.); (N.M.N.’A.); (N.H.)
| | - Nurul Huda
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (M.A.A.M.); (J.M.V.); (K.H.E.); (N.M.N.’A.); (N.H.)
| | - Roswanira Abdul Wahab
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Kobun Rovina
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia; (M.A.A.M.); (J.M.V.); (K.H.E.); (N.M.N.’A.); (N.H.)
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Ielo I, Giacobello F, Castellano A, Sfameni S, Rando G, Plutino MR. Development of Antibacterial and Antifouling Innovative and Eco-Sustainable Sol-Gel Based Materials: From Marine Areas Protection to Healthcare Applications. Gels 2021; 8:26. [PMID: 35049561 PMCID: PMC8774406 DOI: 10.3390/gels8010026] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/15/2021] [Accepted: 12/24/2021] [Indexed: 12/19/2022] Open
Abstract
Bacterial colonization of surfaces is the leading cause of deterioration and contaminations. Fouling and bacterial settlement led to damaged coatings, allowing microorganisms to fracture and reach the inner section. Therefore, effective treatment of surface damaged material is helpful to detach bio-settlement from the surface and prevent deterioration. Moreover, surface coatings can withdraw biofouling and bacterial colonization due to inherent biomaterial characteristics, such as superhydrophobicity, avoiding bacterial resistance. Fouling was a past problem, yet its untargeted toxicity led to critical environmental concerns, and its use became forbidden. As a response, research shifted focus approaching a biocompatible alternative such as exciting developments in antifouling and antibacterial solutions and assessing their antifouling and antibacterial performance and practical feasibility. This review introduces state-of-the-art antifouling and antibacterial materials and solutions for several applications. In particular, this paper focuses on antibacterial and antifouling agents for concrete and cultural heritage conservation, antifouling sol-gel-based coatings for filtration membrane technology, and marine protection and textile materials for biomedicine. In addition, this review discusses the innovative synthesis technologies of antibacterial and antifouling solutions and the consequent socio-economic implications. The synthesis and the related physico-chemical characteristics of each solution are discussed. In addition, several characterization techniques and different parameters that influence the surface finishing coatings deposition were also described.
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Affiliation(s)
- Ileana Ielo
- Institute for the Study of Nanostructured Materials, ISMN—CNR, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (A.C.); (S.S.)
| | - Fausta Giacobello
- Institute for the Study of Nanostructured Materials, ISMN—CNR, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (A.C.); (S.S.)
| | - Angela Castellano
- Institute for the Study of Nanostructured Materials, ISMN—CNR, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (A.C.); (S.S.)
| | - Silvia Sfameni
- Institute for the Study of Nanostructured Materials, ISMN—CNR, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (A.C.); (S.S.)
- Department of Engineering, University of Messina, Contrada di Dio, Vill. S. Agata, 98166 Messina, Italy
| | - Giulia Rando
- Department of Chemical, Biological, Pharmaceutical and Analytical Sciences (ChiBioFarAm), University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy;
| | - Maria Rosaria Plutino
- Institute for the Study of Nanostructured Materials, ISMN—CNR, c/o Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy; (I.I.); (F.G.); (A.C.); (S.S.)
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Effect of Heating Rate on the Photocatalytic Activity of Ag–TiO2 Nanocomposites by One-Step Process via Aerosol Routes. Catalysts 2021. [DOI: 10.3390/catal12010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Ag–TiO2 nanocomposite films, based of Ag and TiO2 nanoparticles, were fabricated in a one-step aerosol route employing the simultaneous plasma-enhanced chemical vapor deposition and physical vapor deposition systems. The as-fabricated films were subjected to different heating rates (3 to 60 °C/min) with a constant annealing temperature of 600 °C to observe the significant changes in the properties (e.g., nanoparticle size, crystalline size, crystallite phase, surface area) toward the photocatalytic performance. The photocatalytic activity was evaluated by the measurement of the degradation of a methylene blue aqueous solution under UV light irradiation, and the results revealed that it gradually increased with the increase in the heating rate, caused by the increased Brunauer–Emmett–Teller (BET) specific surface area and total pore volume.
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49
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Ceramized Fabrics and Their Integration in a Semi-Pilot Plant for the Photodegradation of Water Pollutants. Catalysts 2021. [DOI: 10.3390/catal11111418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The use of nano-photocatalysts for the water/wastewater purifications, particularly in developing regions, offers promising advantages over conventional technologies. TiO2-based photocatalysts deposited on fabrics represent an efficient solution for obtaining heterogeneous photocatalysts, which are easily adaptable in the already installed water treatment plants or air purification systems. Despite the huge effort spent to develop and characterize novel nano-photocatalysts, which are especially active under solar light, knowledge gaps still persist for their full-scale application, starting from the reactor design and scale-up and the evaluation of the photocatalytic efficiency in pre-pilot scenarios. In this study, we offered easily scalable solutions for adapting TiO2-based photocatalysts, which are deposited on different kinds of fabrics and implemented in a 6 L semi-pilot plant, using the photodegradation of Rhodamine B (RhB) as a model of water pollution. We took advantage of a multi-variable optimization approach to identify the best design options in terms of photodegradation efficiency and turnover frequency (TOF). Surprisingly, in the condition of use, the irradiation with a light-emitting diode (LED) visible lamp appeared as a valid alternative to the use of UV LED. The identification of the best design options in the semi-pilot plant allowed scaling up the technology in a 100 L pilot plant suitable for the treatment of industrial wastewater.
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50
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Hammedi K, Dkhili M, Khalifa M, Alvarez‐Galvan C, Ouertani R, Aouida S, Ezzaouia H. Effect of Annealing Temperature on Structural and Optical Properties of ZnTiO
3
Perovskite Layers Deposited on Silicon for Photocatalytic Applications. ChemistrySelect 2021. [DOI: 10.1002/slct.202100215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Khadija Hammedi
- Groupe de recherche des semi-conducteurs,des Nanostructures et des Technologies Avancées (SNTA),Laboratoire de photovoltaïque (LPV) Centre de Recherches et des Technologies de l'Energie (CRTEn) Borj-Cedria B.P N° 952050- Hammam Lif. Tunisia
- Faculty of Mathematical Physical and Natural Sciences of Tunis ElManar University of Tunis El Manar Tunisia
| | - Marwa Dkhili
- Groupe de recherche des semi-conducteurs,des Nanostructures et des Technologies Avancées (SNTA),Laboratoire de photovoltaïque (LPV) Centre de Recherches et des Technologies de l'Energie (CRTEn) Borj-Cedria B.P N° 952050- Hammam Lif. Tunisia
- Faculty of Mathematical Physical and Natural Sciences of Tunis ElManar University of Tunis El Manar Tunisia
| | - Marouan Khalifa
- Groupe de recherche des semi-conducteurs,des Nanostructures et des Technologies Avancées (SNTA),Laboratoire de photovoltaïque (LPV) Centre de Recherches et des Technologies de l'Energie (CRTEn) Borj-Cedria B.P N° 952050- Hammam Lif. Tunisia
| | - Consuelo Alvarez‐Galvan
- Institute of Catalysis and Petrochemical, CSIC Marie Curie, 2, Cantoblanco 28049 Madrid Spain
| | - Rachid Ouertani
- Groupe de recherche des semi-conducteurs,des Nanostructures et des Technologies Avancées (SNTA),Laboratoire de photovoltaïque (LPV) Centre de Recherches et des Technologies de l'Energie (CRTEn) Borj-Cedria B.P N° 952050- Hammam Lif. Tunisia
| | - Selma Aouida
- Groupe de recherche des semi-conducteurs,des Nanostructures et des Technologies Avancées (SNTA),Laboratoire de photovoltaïque (LPV) Centre de Recherches et des Technologies de l'Energie (CRTEn) Borj-Cedria B.P N° 952050- Hammam Lif. Tunisia
| | - Hatem Ezzaouia
- Groupe de recherche des semi-conducteurs,des Nanostructures et des Technologies Avancées (SNTA),Laboratoire de photovoltaïque (LPV) Centre de Recherches et des Technologies de l'Energie (CRTEn) Borj-Cedria B.P N° 952050- Hammam Lif. Tunisia
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