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Umar H, Aliyu MR, Ozsahin DU. Iron oxide nanoparticles synthesized using Mentha spicataextract and evaluation of its antibacterial, cytotoxicity and antimigratory potential on highly metastatic human breast cells. Biomed Phys Eng Express 2024; 10:035019. [PMID: 38513277 DOI: 10.1088/2057-1976/ad3646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 03/21/2024] [Indexed: 03/23/2024]
Abstract
Iron oxide nanoparticles (Fe2O3NPs) were synthesized utilizingMentha spicatasourced from Cyprus as a stabilizing agent. The study delved into assessing the antimicrobial, cytotoxic, anti-proliferative, and anti-migratory potential of Fe2O3 NPs through disc diffusion, trypan blue, and 3-[4, 5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide (MTT) assay, respectively. Characterization of the synthesized Fe2O3 NPs was conducted using Fourier-transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), UV-vis spectroscopy (UV-vis), scanning electron microscopy (SEM), and energy-dispersive x-ray spectroscopy (EDX). The FTIR, XRD, and SEM-EDX spectra confirmed the successful formation of Fe2O3 NPs. The analysis of UV-vis spectra indicates an absorption peak at 302 nm, thereby confirming both the successful synthesis and remarkable stability of the nanoparticles. The nanoparticles exhibited uniform spherical morphology and contained Fe, O, and N, indicating the synthesis of Fe2O3NPs. Additionally, the Fe2O3NPs formed through biosynthesis demonstrated antimicrobial capabilities againstEscherichia coliandBacillus cereus. The significant anti-migratory potential on MDA-MB 231 human breast cancer cells was observed with lower concentrations of the biosynthesized Fe2O3NPs, and higher concentrations revealed cytotoxic effects on the cells with an IC50of 95.7μg/ml. Stable Fe2O3NPs were synthesized usingMentha spicataaqueous extract, and it revealed antimicrobial activity onE. coliandB. cereus, cytotoxic, anti-proliferative and anti-migratory effect on highly metastatic human breast cancer cell lines.
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Affiliation(s)
- Huzaifa Umar
- Operational Research Center in Healthcare, Near East University, TRNC Mersin 10, Nicosia 99138, Turkey
| | - Maryam Rabiu Aliyu
- Energy Systems Engineering, Cyprus International University, Haspolat-Lefkosa, Mersin 10, KKTC, Turkey
| | - Dilber Uzun Ozsahin
- Operational Research Center in Healthcare, Near East University, TRNC Mersin 10, Nicosia 99138, Turkey
- Department of Medical Diagnostic Imaging, College of Health Sciences, University of Sharjah, Sharjah PO Box 27272, United Arab Emirates
- Research Institute for Medical and Health Sciences, University of Sharjah, Sharjah PO Box 27272, United Arab Emirates
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2
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Mosallaei H, Hadadzadeh H, Foelske A, Sauer M, Amiri Rudbari H, Blacque O. [Ru(tmphen) 3] 2[Fe(CN) 6] and [Ru(phen) 3][Fe(CN) 5(NO)] complexes and formation of a heterostructured RuO 2-Fe 2O 3 nanocomposite as an efficient alkaline HER and OER electrocatalyst. Dalton Trans 2022; 51:6314-6331. [PMID: 35383818 DOI: 10.1039/d2dt00398h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water electrolysis is one of the most capable processes for supplying clean fuel. Herein, two novel ionic Ru(II)-Fe(II) complexes, [Ru(tmphen)3]2[Fe(CN)6] and [Ru(phen)3][Fe(CN)5(NO)], where tmphen = 3,4,7,8-tetramethyl-1,10-phenanthroline and phen = 1,10-phenanthroline, were synthesized and characterized by UV-Vis spectroscopy, elemental analysis, FT-IR, and single-crystal X-ray structural analysis. By thermally decomposing the [Ru(tmphen)3]2[Fe(CN)6] complex at 600 °C for 4 h, a heterostructured RuO2-Fe2O3 nanocomposite was fabricated through a facile one-pot treatment and then characterized by FT-IR, XRD, FT-Raman, UV-Vis (DRS), ICP-OES, FE-SEM, TEM, TGA/DTG, BET, and XPS analyses, which revealed the formation of highly crystalline RuO2-Fe2O3 nanoparticles with an average size of 8-12 nm. The prepared nanocomposite was an efficient heterostructured electrocatalyst for performing water-splitting redox reaction processes, including hydrogen and oxygen evolution reactions (HER and OER) in alkaline solutions. In this regard, RuO2 and Fe2O3 samples were also prepared through thermal decomposition of [Ru(tmphen)3](NO3)2 and K4[Fe(CN)6] precursors, respectively, as control experiments to compare their HER and OER electrocatalytic activity with that of the RuO2-Fe2O3 nanocomposite. Specifically, the RuO2-Fe2O3 nanocomposite exhibited significant electrocatalytic performance, generating 10 mA cm-2 current density at -148 and 292 mV overpotentials, and the Tafel slope results from fitting the LSV curves to the Tafel equation were -43 and 56.08 mV dec-1 for the HER and OER, respectively. Therefore, the heterostructured RuO2-Fe2O3 nanocomposite can be viewed as a bi-functional electrocatalyst for HER and OER because it exploits the synergistic effects of heterostructures and active sites at its interface.
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Affiliation(s)
- Hamta Mosallaei
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Hassan Hadadzadeh
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Annette Foelske
- Analytical Instrumentation Center, Technische Universität Wien, Lehargasse 6, 1060 Wien, Austria
| | - Markus Sauer
- Analytical Instrumentation Center, Technische Universität Wien, Lehargasse 6, 1060 Wien, Austria
| | - Hadi Amiri Rudbari
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - Olivier Blacque
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
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Synthesis of CeO2-Fe2O3 Mixed Oxides for Low-Temperature Carbon Monoxide Oxidation. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/5945169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In this study, the CeO2-Fe2O3 mixed oxide catalysts have been prepared by combustion method using gel-created tartaric acid. The ability of effective carbon monoxide (CO) oxidation to carbon dioxide (CO2) by CeO2-Fe2O3 catalyst under low-temperature conditions was also demonstrated. The calcined CeO2-Fe2O3 material has a porous honeycomb structure and good gaseous absorption-desorption ability. The solid solution of CeO2-Fe2O3 mixed oxides was formed by the substitution of Fe+3 ions at some Ce4+ ion sites within the CeO2 crystal lattice. The results also showed that the calcination temperature and the molar ratio of Ce3+ ions to Fe3+ ions (CF) affected the formation of the structural phase and the catalytic efficiency. The catalytic properties of the CeO2-Fe2O3 mixed oxide were good at the CF ratio of 1 : 1, the average crystal size was near 70 nm, and the specific surface area was about 20.22 m2.g-1. The full conversion of CO into CO2 has been accomplished at a relatively low temperature of 270 °C under insufficient O2 conditions.
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Effect of Au Plasmonic Material on Poly M-Toluidine for Photoelectrochemical Hydrogen Generation from Sewage Water. Polymers (Basel) 2022; 14:polym14040768. [PMID: 35215683 PMCID: PMC8878796 DOI: 10.3390/polym14040768] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/05/2022] [Accepted: 02/07/2022] [Indexed: 11/16/2022] Open
Abstract
This study provides H2 gas as a renewable energy source from sewage water splitting reaction using a PMT/Au photocathode. So, this study has a dual benefit for hydrogen generation; at the same time, it removes the contaminations of sewage water. The preparation of the PMT is carried out through the polymerization process from an acid medium. Then, the Au sputter was carried out using the sputter device under different times (1 and 2 min) for PMT/Au-1 min and PMT/Au-2min, respectively. The complete analyses confirm the chemical structure, such as XRD, FTIR, HNMR, SEM, and Vis-UV optical analyses. The prepared electrode PMT/Au is used for the hydrogen generation reaction using Na2S2O3 or sewage water as an electrolyte. The PMT crystalline size is 15 nm. The incident photon to current efficiency (IPCE) efficiency increases from 2.3 to 3.6% (at 390 nm), and the number of H2 moles increases from 8.4 to 33.1 mmol h−1 cm−2 for using Na2S2O3 and sewage water as electrolyte, respectively. Moreover, all the thermodynamic parameters, such as activation energy (Ea), enthalpy (ΔH*), and entropy (ΔS*), were calculated; additionally, a simple mechanism is mentioned for the water-splitting reaction.
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Abdelazeez AAA, El-Fatah GA, Shaban M, Ahmed AM, Rabia M. ITO/Poly-3-Methylaniline/Au Electrode for Electrochemical Water Splitting and Dye Removal. ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY 2021; 10:123009. [DOI: 10.1149/2162-8777/ac3d1a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Application of aniline derivative semiconductor nanopolymer and its Au composite for H2 generation and dye removal were investigated. Electrochemical polymerization of poly-3-methylaniline (P3MA) on ITO glass was carried out for acid medium. Au nanoparticles with crystal sizes of 15 and 30 nm were sputter coated on the surface. Chemical structure of the polymer and its composite was characterized using FTIR, XRD, 1HNMR, SEM, and UV-Vis. All function groups were confirmed using FTIR analyses. XRD confirmed the formation of nanopolymer with a crystal size of ∼15 nm. SEM confirmed the formation of smooth lamellar surface feature with a <20 nm nanoporous structure. Porosity and particle sizes increases with Au coating, confirmed using the modeling Image J program. Optical analysis also demonstrated that the strength of P3MA absorption peaks increases with rising Au coating time, in which the bandgap values changed from 1.64 to 1.63 eV for 15 and 30 nm Au, respectively. The photoelectrode ITO/PMT/30 nm Au was applied for H2 generation and dye removal. The current density (J
ph) values were −0.3 and −1.6 mA.cm−2 in the absence and presence of the Congo red dye, respectively. The incident photon-to-current conversion efficiency (IPCE%) for the electrode was 2.3 at 390 nm. The activation energy (E
a
) was 31.49 KJ mol−1. The enthalpy (∆H
*
) and entropy (∆S
*
) values were 114.49 and 160.46 JK−1 mol−1, respectively. A simple mechanism for the H2 generation and dye removal is mentioned.
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6
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Effect of Sepiolite-Loaded Fe2O3 on Flame Retardancy of Waterborne Polyurethane. ADVANCES IN POLYMER TECHNOLOGY 2021. [DOI: 10.1155/2021/3596591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this study, a kind of inorganic composite flame retardant (Sep@Fe2O3) was prepared by combining solution deposition and calcination methods using sepiolite microfiber material as carrier. This inorganic compound flame retardant was combined with waterborne polyurethane (WPU) through layer-by-layer method to prepare WPU composites. The SEM and EDS, TEM, and XRD were used to characterize the microscopic morphology and crystal structure of WPU composites. Thermogravimetric analysis tests confirmed the good thermal stability of WPU/Sep@Fe2O3 composites; at the temperature of 600°C, the carbon residual percentage of WPU/Sep, WPU/Fe2O3, and WPU/Sep@Fe2O3 composites is 7.3%, 12.2%, and 13.4%, respectively, higher than that of WPU (1.4%). Vertical combustion tests proved better flame-retardant property of WPU/Sep@Fe2O3 composite-coated cotton than noncoated cotton. The microcalorimeter test proved that the PHRR of WPU/Sep@Fe2O3 composites decreased by 61% compared with that of WPU. In addition, after combining with Sep@Fe2O3, the breaking strength of WPU increased by 35%.
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7
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Mohamed Khalith SB, Rishabb Anirud R, Ramalingam R, Karuppannan SK, Dowlath MJH, Pandion K, Ravindran B, WoongChang S, Ovi D, Arasu MV, Ignacimuthu S, Al-Dhabi NA, Chandrasekaran M, Arunachalam KD. Synthesis and characterization of magnetite carbon nanocomposite from agro waste as chromium adsorbent for effluent treatment. ENVIRONMENTAL RESEARCH 2021; 202:111669. [PMID: 34252429 DOI: 10.1016/j.envres.2021.111669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 07/01/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
The waste water released from industries which contain pollutants like heavy metals, dyes and other toxic chemicals brings numerous harms to the ecosystem and humans. Nowadays the nanocomposites based technologies are effectively used for environmental remediation. In the present study, hexavalent chromium was removed from the industrial effluent using magnetite carbon nanocomposite. The nanocomposite composed of highly porous carbon and iron oxide nanoparticles prepared by using agrowastes (sugarcane bagasse and orange peel extract). Iron oxide nanoparticles (FeONPs) formation was confirmed by UV-visible spectroscopy; incorporation of magnetite with highly porous carbon was established by Fourier Transforms Infrared Spectroscopy and X-ray Diffraction Spectroscopy. Morphological features of magnetite nanoparticles and highly porous carbon were analyzed using Scanning Electron Microscope and Transmission Electron Microscope. Magnetic properties analyzed by Vibrating Sample Magnetometer revealed magnetite carbon nanocomposite exhibited better Ms value than highly porous carbon. The concentration of Cr6+ in treated effluent was determined using Atomic Absorption Spectroscopy. Pseudo-second order equation fitted with kinetics and the Langmuir monolayer favors for isotherm. This study reveals efficiency in Cr6+ removal from effluent using magnetite carbon nanocomposites which extends their application in waste water treatment.
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Affiliation(s)
- S B Mohamed Khalith
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India; Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India
| | - R Rishabb Anirud
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India; Department of Biotechnology, Rajalakshmi Engineering College, Chennai, Tamil Nadu, India
| | - Raghavendra Ramalingam
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India
| | - Sathish Kumar Karuppannan
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India
| | - Mohammed Junaid Hussain Dowlath
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India
| | - Kumar Pandion
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India
| | - Balasubramani Ravindran
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India; Department of Environmental Energy and Engineering, Kyonggi University Youngtong-Gu, Suwon, Gyeonggi-Do, 16227, Republic of Korea.
| | - Soon WoongChang
- Department of Environmental Energy and Engineering, Kyonggi University Youngtong-Gu, Suwon, Gyeonggi-Do, 16227, Republic of Korea
| | - Debnath Ovi
- Department of Environmental Energy and Engineering, Kyonggi University Youngtong-Gu, Suwon, Gyeonggi-Do, 16227, Republic of Korea
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. BOX 2455, Riyadh, 11451, Saudi Arabia
| | - Savarimuthu Ignacimuthu
- Xavier Research Foundation, St. Xavier's College, Palayamkottai, Thirunelveli, 627 002, Tamil Nadu, India
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. BOX 2455, Riyadh, 11451, Saudi Arabia
| | - Murugesan Chandrasekaran
- Department of Food Science and Biotechnology, Sejong University, Gwangjin-gu, Seoul, 05006, Republic of Korea
| | - Kantha Deivi Arunachalam
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, 603203, Kanchipuram, Chennai, Tamil Nadu, India.
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8
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Dowlath MJH, Musthafa SA, Mohamed Khalith SB, Varjani S, Karuppannan SK, Ramanujam GM, Arunachalam AM, Arunachalam KD, Chandrasekaran M, Chang SW, Chung WJ, Ravindran B. Comparison of characteristics and biocompatibility of green synthesized iron oxide nanoparticles with chemical synthesized nanoparticles. ENVIRONMENTAL RESEARCH 2021; 201:111585. [PMID: 34181925 DOI: 10.1016/j.envres.2021.111585] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/12/2021] [Accepted: 06/19/2021] [Indexed: 05/24/2023]
Abstract
Iron oxide nanoparticles synthesis is an expanding area of research due of their magnetic properties and possible applications in several novel technologies. FeONPs are indispensable in the biomedical field for diagnosis, treatments and drug delivery and in bioremediation applications. The synthesis route of nanoparticles is a major concern because biological methods are eco-friendly, and chemical methods are considered toxic. The objective of this study is to synthesize FeONPs by two different methods and to compare their properties and efficiency in applications. FeONPs were synthesized and characterized by microscopic and various spectroscopic techniques. The synthesized FeONPs were screened for their cytotoxic activity on PBMCs using MTT assay and found to exhibit good biocompatibility. Moreover, the GS FeONPs exhibited potential antibacterial activities and meanwhile showed less toxicity in brine shrimp lethality assay. Hence, these nanoparticles are biocompatible, environmentally safe and can be utilized in many medical applications.
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Affiliation(s)
- Mohammed Junaid Hussain Dowlath
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - Shazia Anjum Musthafa
- Interdisciplinary Institute of Indian System of Medicine, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India; Department of Biotechnology, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - S B Mohamed Khalith
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - Sunita Varjani
- Gujarat Pollution Control Board, Gandhinagar, 382 010, Gujarat, India
| | - Sathish Kumar Karuppannan
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - Ganesh Munuswamy Ramanujam
- Interdisciplinary Institute of Indian System of Medicine, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India; Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India
| | - Aarrthy M Arunachalam
- Department of Emergency Medicine, Howard University, Kaplan Medical Center, Washington, DC, USA
| | - Kantha Deivi Arunachalam
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India.
| | - Murugesan Chandrasekaran
- Department of Food Science and Biotechnology, Sejong University, Gwangjin-gu, Seoul, 05006, Republic of Korea
| | - Soon Woong Chang
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong-Gu, Suwon, Gyeonggi-Do, 16227, Republic of Korea
| | - Woo Jin Chung
- Department of Environmental Energy and Engineering, Kyonggi University, Youngtong-Gu, Suwon, Gyeonggi-Do, 16227, Republic of Korea
| | - Balasubramani Ravindran
- Center for Environmental Nuclear Research, Directorate of Research and Virtual Education, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu, 603203, India; Department of Environmental Energy and Engineering, Kyonggi University, Youngtong-Gu, Suwon, Gyeonggi-Do, 16227, Republic of Korea.
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Meshram N, Mahadik MA, Jeong IK, Seo YS, Cho M, Jang JS. Effect of tetravalent ions dopants and CoO surface modification on hematite nanorod array for photoelectrochemical degradation of Orange-II dye. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.02.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Nosal-Wiercińska A, Kaliszczak W, Drapsa A, Grochowski M, Wiśniewska M, Klepka T. Influence of nonionic surfactants and water activity on to adsorption of 6-thioguanine at the mercury/chlorates(VII) interface. ADSORPTION 2018. [DOI: 10.1007/s10450-018-9997-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Warfsmann S, Taffa DH, Wark M. Reprint of “Photoelectrocatalytic behavior of electrodeposited zinc ferrite films with varying Zn:Fe ratio”. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Warfsmann S, Taffa DH, Wark M. Photoelectrocatalytic behavior of electrodeposited zinc ferrite films with varying Zn:Fe ratio. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.05.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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13
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Spray deposited Fe 2 O 3 and stratified Fe 2 O 3 /ZnO novel photoelectrode for photoelectrocatalytic degradation of benzoic acid under solar light illumination. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.02.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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14
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Gahlawat S, Rashid N, Ingole PP. n-Type Cu2O/α-Fe2O3 Heterojunctions by Electrochemical Deposition: Tuning of Cu2O Thickness for Maximum Photoelectrochemical Performance. Z PHYS CHEM 2018. [DOI: 10.1515/zpch-2018-1140] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abstract
Here, we report the enhanced photoelectrochemical performance of surface modified hematite thin films with n-type copper oxide nanostructures (Cu2O/Fe2O3) obtained through simple electrochemical deposition method. The thickness and amount of cuprous oxide layer were varied by simply changing the number of electrodeposition cycles (viz. 5, 10, 25, 50 and 100) in order to understand its thermodynamic and kinetic influence on the photoelectrochemical activity of the resultant nano-heterostructures. Structural and morphological characteristics of the obtained Cu2O/Fe2O3 films have been studied by absorption spectroscopy, X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy analysis. Electrochemical investigations such as linear sweep voltammetry, Mott–Schottky analysis, and electrochemical impedance spectroscopy suggested the formation of n-type Cu2O layers over the hematite films with varying charge-carrier densities, ranging from 0.56×1019 to 3.94×1019 cm−3, that varies with the number of cycles of electrochemical deposition. Besides, the thickness of deposited cuprous oxide layer is noted to alter the net electrochemical and photo-electrochemical response of the base material. An interesting, peak event was recorded for a particular thickness of the cuprous oxide layer (obtained after 25 cycles of electrochemical deposition) below and above which the efficiency of catalyst was impaired. The heterojunction obtained thus, followed well known Z-scheme and gave appreciable increment in the photocurrent response.
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Affiliation(s)
- Soniya Gahlawat
- Department of Chemistry , Indian Institute of Technology Delhi , New Delhi 110016 , India
| | - Nusrat Rashid
- Department of Chemistry , Indian Institute of Technology Delhi , New Delhi 110016 , India
| | - Pravin P. Ingole
- Department of Chemistry , Indian Institute of Technology Delhi , New Delhi 110016 , India , Tel.: +91(11)26597547, Fax: +91(11)26581102, e-mail:
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15
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Kimmich D, Taffa DH, Dosche C, Wark M, Wittstock G. Combinatorial screening of photoanode materials - Uniform platform for compositional arrays and macroscopic electrodes. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.10.147] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Zhang T, Zhao N, Li J, Gong H, An T, Zhao F, Ma H. Thermal behavior of nitrocellulose-based superthermites: effects of nano-Fe2O3 with three morphologies. RSC Adv 2017. [DOI: 10.1039/c6ra28502c] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Superthermites with three Fe2O3 morphologies (rod-like, polyhedral, and olivary) were synthesized. The morphological effects of Al/Fe2O3 on the thermal decomposition property of nitrocellulose (NC) were investigated.
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Affiliation(s)
- Ting Zhang
- School of Chemical Engineering
- Northwest University
- Xi'an 710069
- China
| | - Ningning Zhao
- School of Chemical Engineering
- Northwest University
- Xi'an 710069
- China
| | - Jiachen Li
- School of Chemical Engineering
- Northwest University
- Xi'an 710069
- China
| | - Hujun Gong
- State Key Laboratory of Continental Dynamics
- Northwest University
- Xi'an 710069
- China
| | - Ting An
- Science and Technology on Combustion and Explosion Laboratory
- Xi'an Modern Chemistry Research Institute
- Xi'an 710065
- China
| | - Fengqi Zhao
- Science and Technology on Combustion and Explosion Laboratory
- Xi'an Modern Chemistry Research Institute
- Xi'an 710065
- China
| | - Haixia Ma
- School of Chemical Engineering
- Northwest University
- Xi'an 710069
- China
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Kimmich D, Taffa DH, Dosche C, Wark M, Wittstock G. Photoactivity and scattering behavior of anodically and cathodically deposited hematite photoanodes – a comparison by scanning photoelectrochemical microscopy. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.03.187] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Xie X, Li K, Zhang WD. Photoelectrochemical properties of Ti-doped hematite nanosheet arrays decorated with CdS nanoparticles. RSC Adv 2016. [DOI: 10.1039/c6ra11978f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
A photoanode comprised of vertically aligned Ti-doped hematite nanosheet arrays decorated with cadmium sulfide nanoparticles was fabricated. The Ti-Fe2O3/CdS electrode shows high photoelectrochemical response under visible light irradiation.
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Affiliation(s)
- Xin Xie
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
| | - Kui Li
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
| | - Wei-De Zhang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- People's Republic of China
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