1
|
Li S, Ye Y, Liu X, Yang X, Fang S, Zhou N. Preparation of carbon-coated Fe 2 O 3 @Ti 3 C 2 T x composites by mussel-like modifications as high-performance anodes for lithium-ion batteries. Chemistry 2024; 30:e202302768. [PMID: 38171767 DOI: 10.1002/chem.202302768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Indexed: 01/05/2024]
Abstract
Fe2 O3 with high theoretical capacity (1007 mA h g-1 ) and low cost is a potential anode material for lithium-ion batteries (LIBs), but its practical application is restricted by its low electrical conductivity and large volume changes during lithiation/delithiation. To solve these problems, Fe2 O3 @Ti3 C2 Tx composites were synthesized by a mussel-like modification method, which relies on the self-polymerization of dopamine under mild conditions. During polymerization, the electronegative group (-OH) on dopamine can easily coordinate with Fe3+ ions as well as form hydrogen bonds with the -OH terminal group on the surface of Ti3 C2 Tx , which induces a uniform distribution of Fe2 O3 on the Ti3 C2 Tx surface and mitigates self-accumulation of MXene nanosheets. In addition, the polydopamine-derived carbon layer protects Ti3 C2 Tx from oxidation during the hydrothermal process, which can further improve the electrical conductivity of the composites and buffer the volume expansion and particle agglomeration of Fe2 O3 . As a result, Fe2 O3 @Ti3 C2 Tx anodes exhibit ~100 % capacity retention with almost no capacity loss at 0.5 A g-1 after 250 cycles, and a stable capacity of 430 mA h g-1 at 2 A g-1 after 500 cycles. The unique structural design of this work provides new ideas for the development of MXene-based composites in energy storage applications.
Collapse
Affiliation(s)
- Shaoqing Li
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, P. R. China
| | - Yong Ye
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, P. R. China
| | - Xiang Liu
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, P. R. China
- Ganfeng Lithium Group Co., Ltd., Xinyu, 338015, P. R. China
| | - Xuerui Yang
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, P. R. China
| | - Shan Fang
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, P. R. China
| | - Naigen Zhou
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, P. R. China
| |
Collapse
|
2
|
Sakamoto M, Fujita R, Nishikawa M, Hirazawa H, Ueno Y, Yamamoto M, Takaoka S. Hematite ( α-Fe 2O 3) with Oxygen Defects: The Effect of Heating Rate for Photocatalytic Performance. Materials (Basel) 2024; 17:395. [PMID: 38255563 PMCID: PMC10820844 DOI: 10.3390/ma17020395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/26/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024]
Abstract
Hematite (α-Fe2O3) emerges as an enticing material for visible-light-driven photocatalysis owing to its remarkable stability, low toxicity, and abundance. However, its inherent shortcomings, such as a short hole diffusion length and high recombination rate, hinder its practical application. Recently, oxygen vacancies (Vo) within hematite have been demonstrated to modulate its photocatalytic attributes. The effects of Vo can be broadly categorized into two opposing aspects: (1) acting as electron donors, enhancing carrier conductivity, and improving photocatalytic performance and (2) acting as surface carrier traps, accelerating excited carrier recombination, and deteriorating performance. Critically, the generation rate, distribution, role, and behavior of Vo significantly differ for synthesis methods due to differences in formation mechanisms and oxygen diffusion. This complexity hampers simplified discussions of Vo, necessitating careful investigation and nuanced discussion tailored to the specific method and conditions employed. Among various approaches, hydrothermal synthesis offers a simple and cost-effective route. Here, we demonstrate a hydrothermal synthesis method for Vo introduction to hematite using a carbon source, where variations in the heating rate have not been previously explored in terms of their influence on Vo generation. The analyses revealed that the concentration of Vo was maximized at a heating rate of 16 °C/min, indicative of a high density of surface defects. With regard to photocatalytic performance, elevated heating rates (16 °C/min) fostered the formation of Vo primarily on the hematite surface. The photocatalytic activity was 7.1 times greater than that of the sample prepared at a low heating rate (2 °C/min). These findings highlight the crucial role of surface defects, as opposed to bulk defects, in promoting hematite photocatalysis. Furthermore, the facile control over Vo concentration achievable via manipulating the heating rate underscores the promising potential of this approach for optimizing hematite photocatalysts.
Collapse
Affiliation(s)
- Masanori Sakamoto
- Department of Environmental Materials Engineering, National Institute of Technology (KOSEN), Niihama College, 7-1 Yagumo, Niihama 792-8580, Japan
| | - Ryoga Fujita
- Department of Environmental Materials Engineering, National Institute of Technology (KOSEN), Niihama College, 7-1 Yagumo, Niihama 792-8580, Japan
| | - Masami Nishikawa
- Department of Materials Science and Bioengineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2137, Japan
| | - Hideyuki Hirazawa
- Department of Environmental Materials Engineering, National Institute of Technology (KOSEN), Niihama College, 7-1 Yagumo, Niihama 792-8580, Japan
| | - Yuichi Ueno
- Center for Integrated Technology Support, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2137, Japan
| | - Manami Yamamoto
- Department of Environmental Materials Engineering, National Institute of Technology (KOSEN), Niihama College, 7-1 Yagumo, Niihama 792-8580, Japan
| | - Suzu Takaoka
- Department of Environmental Materials Engineering, National Institute of Technology (KOSEN), Niihama College, 7-1 Yagumo, Niihama 792-8580, Japan
| |
Collapse
|
3
|
Jiang W, Zhang Z, Yang K, Zhou J, Hu C, Pan L, Li Q, Yang J. In situconstruction of N-doped Ti 3C 2T xconfined worm-like Fe 2O 3nanoparticles by Fe-O-Ti bonding for LIBs anode with superior cycle performance. Nanotechnology 2023; 35:015402. [PMID: 37714139 DOI: 10.1088/1361-6528/acfa05] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/14/2023] [Indexed: 09/17/2023]
Abstract
The development of Fe2O3as lithium-ion batteries (LIBs) anode is greatly restricted by its poor electronic conductivity and structural stability. To solve these issues, this work presentsin situconstruction of three-dimensional crumpled Fe2O3@N-Ti3C2Txcomposite by solvothermal-freeze-drying process, in which wormlike Fe2O3nanoparticles (10-50 nm)in situnucleated and grew on the surface of N-doped Ti3C2Txnanosheets with Fe-O-Ti bonding. As a conductive matrix, N-doping endows Ti3C2Txwith more active sites and higher electron transfer efficiency. Meanwhile, Fe-O-Ti bonding enhances the stability of the Fe2O3/N-Ti3C2Txinterface and also acts as a pathway for electron transmission. With a large specific surface area (114.72 m2g-1), the three-dimensional crumpled structure of Fe2O3@N-Ti3C2Txfacilitates the charge diffusion kinetics and enables easier exposure of the active sites. Consequently, Fe2O3@N-Ti3C2Txcomposite exhibits outstanding electrochemical performance as anode for LIBs, a reversible capacity of 870.2 mAh g-1after 500 cycles at 0.5 A g-1, 1129 mAh g-1after 280 cycles at 0.2 A g-1and 777.6 mAh g-1after 330 cycles at 1 A g-1.
Collapse
Affiliation(s)
- Wei Jiang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Zhen Zhang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Kai Yang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Jun Zhou
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Changjian Hu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Limei Pan
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Qian Li
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211816, People's Republic of China
| | - Jian Yang
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, People's Republic of China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 211816, People's Republic of China
| |
Collapse
|
4
|
Zheng J, Liu G, Jiao Z. Highly Efficient Photo-Fenton Ag/Fe 2O 3/BiOI Z-Scheme Heterojunction for the Promoted Degradation of Tetracycline. Nanomaterials (Basel) 2023; 13:1991. [PMID: 37446507 DOI: 10.3390/nano13131991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 06/24/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023]
Abstract
Novel Ag/Fe2O3/BiOI Z-scheme heterostructures are first fabricated through a facile hydrothermal method. The composition and properties of as-synthesized Ag/Fe2O3/BiOI nanocomposites are characterized by powder X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, UV-Vis diffuse reflectance spectra, etc. The Ag/Fe2O3/BiOI systems exhibit remarkable degradation performance for tetracycline (TC). In particular, the composite (Ag/Fe2O3/BiOI-2) shows the highest efficiency when the contents of Ag and α-Fe2O3 are 2 wt% and 15%, respectively. The effects of operating parameters, including the solution pH, H2O2 concentration, TC concentration, and catalyst concentration, on the degradation efficiency are investigated. The photo-Fenton mechanism is studied, and the results indicated that •O2- is the main active specie for TC degradation. The enhanced performance of Ag/Fe2O3/BiOI heterostructures may be ascribed to the synergic effect between photocatalysis and the Fenton reaction. The formation of Ag/Fe2O3/BiOI heterojunction is beneficial to the transfer and separation of charge carriers. The photo-generated electrons accelerate the Fe2+/Fe3+ cycle and create the reductive reaction of H2O2. This research reveals that the Ag/Fe2O3/BiOI composite possesses great potential in wastewater treatment.
Collapse
Affiliation(s)
- Jingjing Zheng
- Department of Chemical Engineering and Safety, Binzhou University, Binzhou 256603, China
| | - Guoxia Liu
- Department of Chemical Engineering and Safety, Binzhou University, Binzhou 256603, China
| | - Zhengbo Jiao
- Institute of Materials for Energy and Environment, Qingdao University, Qingdao 266071, China
| |
Collapse
|
5
|
Irawan AP, Fitriyana DF, Siregar JP, Cionita T, Anggarina PT, Utama DW, Rihayat T, Rusiyanto R, Dimyati S, Aripin MB, Ismail R, Bayuseno AP, Baskara GD, Khafidh M, Putera FP, Yotenka R. Influence of Varying Concentrations of Epoxy, Rice Husk, Al 2O 3, and Fe 2O 3 on the Properties of Brake Friction Materials Prepared Using Hand Layup Method. Polymers (Basel) 2023; 15:2597. [PMID: 37376243 DOI: 10.3390/polym15122597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/31/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
Brake friction materials (BFMs) have a critical role in ensuring the safety as well as the reliability of automotive braking systems. However, traditional BFMs, typically made from asbestos, are associated with environmental and health concerns. Therefore, this results in a growing interest in developing alternative BFMs that are eco-friendly, sustainable, and cost-effective. This study investigates the effect of varying concentrations of epoxy, rice husk, alumina (Al2O3), and iron oxide (Fe2O3) on the mechanical and thermal properties of BFMs prepared using the hand layup method. In this study, the rice husk, Al2O3, and Fe2O3 were filtered through a 200-mesh sieve. Note that the BFMs were fabricated using different combinations and concentrations of the materials. Their mechanical properties, such as density, hardness, flexural strength, wear resistance, and thermal properties, were investigated. The results suggest that the concentrations of the ingredients significantly influence the mechanical and thermal properties of the BFMs. A specimen made from epoxy, rice husk, Al2O3, and Fe2O3 with concentrations of 50 wt.%, 20 wt.%, 15 wt.%, and 15 wt.%, respectively, produced the best properties for BFMs. On the other hand, the density, hardness, flexural strength, flexural modulus, and wear rate values of this specimen were 1.23 g/cm3, 81.2 Vickers (HV), 57.24 MPa, 4.08 GPa, and 8.665 × 10-7 mm2/kg. In addition, this specimen had better thermal properties than the other specimens. These findings provide valuable insights into developing eco-friendly and sustainable BFMs with suitable performance for automotive applications.
Collapse
Affiliation(s)
| | - Deni Fajar Fitriyana
- Department of Mechanical Engineering, Universitas Negeri Semarang, Kampus Sekaran, Gunungpati, Semarang 50229, Indonesia
| | - Januar Parlaungan Siregar
- Faculty of Mechanical & Automotive Engineering Technology, Universiti Malaysia Pahang, Pekan 26600, Malaysia
| | - Tezara Cionita
- Faculty of Engineering and Quantity Surveying, INTI International University, Nilai 71800, Malaysia
| | | | - Didi Widya Utama
- Faculty of Engineering, Universitas Tarumanagara, Jakarta 11480, Indonesia
| | - Teuku Rihayat
- Department of Chemical Engineering, Politeknik Negeri Lhokseumawe, Lhokseumawe 24301, Indonesia
| | - Rusiyanto Rusiyanto
- Department of Mechanical Engineering, Universitas Negeri Semarang, Kampus Sekaran, Gunungpati, Semarang 50229, Indonesia
| | - Saeful Dimyati
- Department of Mechanical Engineering, Universitas Negeri Semarang, Kampus Sekaran, Gunungpati, Semarang 50229, Indonesia
| | - Muhammad Bustanul Aripin
- Department of Mechanical Engineering, Universitas Negeri Semarang, Kampus Sekaran, Gunungpati, Semarang 50229, Indonesia
| | - Rifky Ismail
- Department of Mechanical Engineering, Faculty of Engineering, Diponegoro University, Semarang 50275, Indonesia
| | | | - Gregorius Dimas Baskara
- School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Bandung 40132, Indonesia
| | - Muhammad Khafidh
- Department of Mechanical Engineering, Universitas Islam Indonesia, Sleman, Yogyakarta 55584, Indonesia
| | - Finny Pratama Putera
- Department of Mechanical Engineering, Universitas Islam Indonesia, Sleman, Yogyakarta 55584, Indonesia
| | - Rahmadi Yotenka
- Department of Statistics, Universitas Islam Indonesia, Sleman, Yogyakarta 55584, Indonesia
| |
Collapse
|
6
|
Li Y, Dang J, Ma Y, Ma H. Hematite: A Good Catalyst for the Thermal Decomposition of Energetic Materials and the Application in Nano-Thermite. Molecules 2023; 28. [PMID: 36903281 DOI: 10.3390/molecules28052035] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/19/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
Metal oxides (MOs) are of great importance in catalysts, sensor, capacitor and water treatment. Nano-sized MOs have attracted much more attention because of the unique properties, such as surface effect, small size effect and quantum size effect, etc. Hematite, an especially important additive as combustion catalysts, can greatly speed up the thermal decomposition process of energetic materials (EMs) and enhance the combustion performance of propellants. This review concludes the catalytic effect of hematite with different morphology on some EMs such as ammonium perchlorate (AP), cyclotrimethylenetrinitramine (RDX), cyclotetramethylenete-tranitramine (HMX), etc. The method for enhancing the catalytic effect on EMs using hematite-based materials such as perovskite and spinel ferrite materials, making composites with different carbon materials and assembling super-thermite is concluded and their catalytic effects on EMs is also discussed. Therefore, the provided information is helpful for the design, preparation and application of catalysts for EMs.
Collapse
|
7
|
Hao Z, Zhang H, Tang X, Sui L, Li Y, Zhang S. Utilization of gasification slag and petrochemical incineration fly ash for glass ceramic production. Front Chem 2023; 10:1095500. [PMID: 36712980 PMCID: PMC9877315 DOI: 10.3389/fchem.2022.1095500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 12/28/2022] [Indexed: 01/15/2023] Open
Abstract
This study investigated glass ceramics produced using coal gasification slag (CGS) and petrochemical incineration fly ash (PIFA) to immobilize hazardous heavy metals such as Cr and As. However, the crystallization kinetics and stabilization behavior mechanism of different heavy metals in the petrochemical incineration fly ash-derived glass-ceramics remains unclear. And X-ray diffraction, differential scanning calorimetry, scanning electron microscopy, and inductively coupled plasma mass spectrometry were used to characterize glass and crystalline products. In this paper, we reported the crystallization kinetics and chemical leaching characteristics of the glass ceramic. A low crystallization activation energy of 121.49 kJ/mol was achieved from crystallization peak of several different heating rates around 850°C, implying that it is easier to produce the glass ceramics at that temperature. The Avrami parameter of the former crystallization was determined to be 1.23 ± .12, which indicated two-dimensional crystal growth with heterogeneous nucleation. The toxicity characteristic leaching procedure results indicated that the heavy metals were well solidified, and that the leaching concentration was significantly lower than the limit specified by governmental agencies. The potentially toxic element index of the parent glass and the two glass ceramics were 11.7, 5.8, and 3.6, respectively. Therefore, the conversion of hazardous petrochemical incineration fly ash and other solid waste into environmentally friendly glass ceramics shows considerable potential and reliability.
Collapse
|
8
|
Aslam J, Wang Y. Metal Oxide Wrapped by Reduced Graphene Oxide Nanocomposites as Anode Materials for Lithium-Ion Batteries. Nanomaterials (Basel) 2023; 13:296. [PMID: 36678050 PMCID: PMC9865346 DOI: 10.3390/nano13020296] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/03/2023] [Accepted: 01/08/2023] [Indexed: 06/17/2023]
Abstract
The reduced graphene oxide/iron oxide (rGO/Fe2O3) and reduced graphene oxide/cobalt oxide (rGO/Co3O4) composite anodes have been successfully prepared through a simple and scalable ball-milling synthesis. The substantial interaction of Fe2O3 and Co3O4 with the rGO matrix strengthens the electronic conductivity and limits the volume variation during cycling in the rGO/Fe2O3 and rGO/Co3O4 composites because reduced graphene oxide (rGO) helps the metal oxides (MOs) to attain a more efficient diffusion of Li-ions and leads to high specific capacities. As anode materials for LIBs, the rGO/Fe2O3 and rGO/Co3O4 composites demonstrate overall superb electrochemical properties, especially rGO/Fe2O3T-5 and rGO/Co3O4T-5, showcasing higher reversible capacities of 1021 and 773 mAhg-1 after 100 cycles at 100 mAg-1, accompanied by the significant rate performance. Because of their superior electrochemical efficiency, high capacity and low cost, the rGO/Fe2O3 and rGO/Co3O4 composites made by ball milling could be outstanding anode materials for LIBs. Due to the excellent electrochemical performance, the rGO/Fe2O3 and rGO/Co3O4 composites prepared via ball milling could be promising anode materials with a high capacity and low cost for LIBs. The findings may provide shed some light on how other metal oxides wrapped by rGO can be prepared for future applications.
Collapse
Affiliation(s)
- Junaid Aslam
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Yong Wang
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), Shanghai University, 99 Shangda Road, Shanghai 200444, China
| |
Collapse
|
9
|
Naghipour D, Taghavi K, Jaafari J, Kabdaşlı I, Makkiabadi M, Javan Mahjoub Doust M, Javan Mahjoub Doust F. Scallop shell coated Fe 2O 3 nanocomposite as an eco-friendly adsorbent for tetracycline removal. Environ Technol 2023; 44:150-160. [PMID: 34357852 DOI: 10.1080/09593330.2021.1966105] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 08/01/2021] [Indexed: 06/13/2023]
Abstract
ABSTRACTThe present study focused on the usability of scallop shell coated Fe2O3 nanoparticles as an eco-friendly new absorbent in the treatment of tetracycline (TC). The process performance in terms of TC removal was investigated at different operating conditions, i.e. at solution pH of 3-11, Fe2O3-scallop dosage of 0.4-2.4 g L-1, initial TC content of 20-120 mg L-1 and temperature of 25-55°C. Solution pH of 7 yielded the highest TC removal efficiency (99%). At this pH value, almost complete TC removal was achieved at a Fe2O3-scallop shell nanocomposite dose of 1.6 g L-1 and 25°C. The responsible TC removal mechanism is suggested as the non-electrical π-π dispersion interaction between the bulk π system on the absorbent surface and TC molecules bearing both benzene rings and double bonds at this solution pH. TC removal efficiency appreciably enhanced up to the Fe2O3-scallop dosage of 1.6 g L-1 being an optimum. Adsorption rate was found to be fast at lower initial TC concentrations than 40 mg L-1. The effect of temperature on TC removal efficiency was insignificant. Adsorption followed the pseudo-second-order kinetic model. Experimental data perfectly fitted by the Langmuir equation. The maximum adsorption capacity was calculated as 49.26 mg g-1. Thermodynamic analysis demonstrated that adsorption process was spontaneous process and endothermic. The results obtained from the present study proved the excellent performance of scallop shell coated Fe2O3 nanoparticles as an eco-friendly adsorbent in TC treatment.
Collapse
Affiliation(s)
- Dariush Naghipour
- School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Kamran Taghavi
- School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Jalil Jaafari
- School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Işık Kabdaşlı
- Environmental Engineering Department, Civil Engineering Faculty, İstanbul Technical University, İstanbul, Republic of Turkey
| | - Mahmoud Makkiabadi
- Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
| | | | | |
Collapse
|
10
|
Niu ZY, Jiao L, Zhang T, Zhao XM, Wang XF, Tan Z, Liu LZ, Chen S, Song XZ. Boosting Electrocatalytic Ammonia Synthesis of Bio-Inspired Porous Mo-Doped Hematite via Nitrogen Activation. ACS Appl Mater Interfaces 2022; 14:55559-55567. [PMID: 36479880 DOI: 10.1021/acsami.2c16081] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Electrochemical N2 reduction reaction (NRR) emerges as a highly attractive alternative to the Haber-Bosch process for producing ammonia (NH3) under ambient circumstances. Currently, this technology still faces tremendous challenges due to the low ammonia production rate and low Faradaic efficiency, urgently prompting researchers to explore highly efficient electrocatalysts. Inspired by the Fe-Mo cofactor in nitrogenase, we report Mo-doped hematite (Fe2O3) porous nanospheres containing Fe-O-Mo subunits for enhanced activity and selectivity in the electrochemical reduction from N2 to NH3. Mo-doping induces the morphology change from a solid sphere to a porous sphere and enriches lattice defects, creating more active sites. It also regulates the electronic structures of Fe2O3 to accelerate charge transfer and enhance the intrinsic activity. As a consequence, Mo-doped Fe2O3 achieves effective N2 fixation with a high ammonia production rate of 21.3 ± 1.1 μg h-1 mgcat.-1 as well as a prominent Faradaic efficiency (FE) of 11.2 ± 0.6%, superior to the undoped Fe2O3 and other iron oxide catalysts. Density functional theory (DFT) calculations further unravel that the Mo-doping in Fe2O3 (110) narrows the band gap, promotes the N2 activation on the Mo site with an elongated N≡N bond length of 1.132 Å in the end-on configuration, and optimizes an associative distal pathway with a decreased energy barrier. Our results may pave the way toward enhancing the electrocatalytic NRR performance of iron-based materials by atomic-scale heteroatom doping.
Collapse
Affiliation(s)
- Zan-Yao Niu
- Leicester International Institute, Dalian University of Technology, Panjin 124221, China
| | - Lei Jiao
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Tao Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiu-Ming Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiao-Feng Wang
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Zhenquan Tan
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
- Leicester International Institute, Dalian University of Technology, Panjin 124221, China
| | - Li-Zhao Liu
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian 116024, China
| | - Siru Chen
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Xue-Zhi Song
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| |
Collapse
|
11
|
Tian S, Zhang B, Han D, Gong Z, Li X. Fe 2O 3/Porous Carbon Composite Derived from Oily Sludge Waste as an Advanced Anode Material for Supercapacitor Application. Nanomaterials (Basel) 2022; 12:3819. [PMID: 36364595 PMCID: PMC9656837 DOI: 10.3390/nano12213819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/19/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
It is urgent to improve the electrochemical performance of anode for supercapacitors. Herein, we successfully prepare Fe2O3/porous carbon composite materials (FPC) through hydrothermal strategies by using oily sludge waste. The hierarchical porous carbon (HPC) substrate and fine loading of Fe2O3 nanorods are all important for the electrochemical performance. The HPC substrate could not only promote the surface capacitance effect but also improve the utilization efficiency of Fe2O3 to enhance the pseudo-capacitance. The smaller and uniform Fe2O3 loading is also beneficial to optimize the pore structure of the electrode and enlarge the interface for faradaic reactions. The as-prepared FPC shows a high specific capacitance of 465 F g-1 at 0.5 A g-1, good rate capability of 66.5% retention at 20 A g-1, and long cycling stability of 88.4% retention at 5 A g-1 after 4000 cycles. In addition, an asymmetric supercapacitor device (ASC) constructed with FPC as the anode and MnO2/porous carbon composite (MPC) as the cathode shows an excellent power density of 72.3 W h kg-1 at the corresponding power density of 500 W kg-1 with long-term cycling stability. Owing to the outstanding electrochemical characteristics and cycling performance, the associated materials' design concept from oily sludge waste has large potential in energy storage applications and environmental protection.
Collapse
Affiliation(s)
- Shubing Tian
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Baoling Zhang
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Dong Han
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| | - Zhiqiang Gong
- State Grid Shandong Electric Power Research Institute, Jinan 250003, China
| | - Xiaoyu Li
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| |
Collapse
|
12
|
Meng X, Huang J, Zhu G, Xu Y, Zhu S, Li Q, Chen M, Lin MC. Fe 2O 3nanoparticles anchored on thermally oxidized MWCNTs as anode material for lithium-ion battery. Nanotechnology 2022; 34:015602. [PMID: 36170800 DOI: 10.1088/1361-6528/ac959f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Thermally oxidized MWCNTs (OMWCNTs) are fabricated by a thermal treatment of MWCNTs at 500 °C for 3 h in an oxygen-containing atmosphere. The oxygen content of OMWCNTs increases from 1.9 wt% for MWCNTs to 8.3 wt%. And the BET specific surface area of OMWCNTs enhances from 254.2 m2g-1for MWCNTs to 496.1 m2g-1. The Fe2O3/OMWCNTs nanocomposite is prepared by a hydrothermal method. Electrochemical measurements show that Fe2O3/OMWCNTs still keeps a highly reversible specific capacity of 653.6 mA h g-1after 200 cycles at 0.5 A g-1, which shows an obviously higher capacity than the sum of that of single Fe2O3and OMWCNTs. The OMWCNTs not only buffer the volume changes of Fe2O3nanoparticles but also provide high-speed electronic transmission channels in the charge-discharge process. The thermal oxidation method of OMWCNTs avoids using strong corrosive acids such as nitric acid and sulfuric acid, which has the advantages of safety, environmental protection, macroscopic preparation, etc.
Collapse
Affiliation(s)
- Xiaoru Meng
- College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
- College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Jingrui Huang
- College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Guangzhao Zhu
- College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Yan Xu
- College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Shoupu Zhu
- College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Qi Li
- Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, People's Republic of China
| | - Ming Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, People's Republic of China
| | - Meng-Chang Lin
- College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| |
Collapse
|
13
|
Soares JDO, Cavalcanti WEC, Torres MAM, Pergher SBC, De Oliveira FJVE, Braga TP. Synthesis, Characterization and Photocatalytic Activity of CoFe 2O 4/Fe 2O 3 Dispersed in Mesoporous KIT-6. Nanomaterials (Basel) 2022; 12:3566. [PMID: 36296757 PMCID: PMC9611405 DOI: 10.3390/nano12203566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
The present work aimed to synthesize and characterize a solid based on CoFe2O4/Fe2O3-KIT-6 and evaluate its performance in the photocatalytic degradation of the remazol red ultra RGB dye. By analyzing XRD, N2 physisorption, and Mössbauer results, it was possible to identify that the desired CoFe2O4/Fe2O3 phase was achieved, which maintained its structural properties. The FTIR-pyridine indicated the presence of Lewis acid sites, while TPD-CO2 showed a large amount of weak basic sites. The band-gap energy indicated that the compound can be applied in photocatalytic degradation under UV/visible light, with the possibility of magnetic separation at the end of the reaction. The photocatalysis results indicated that there was complete degradation of the remazol red ultra RGB dye within 1 h of reaction. Despite the absence of H2O2, the combination of the proposed photocatalyst with the anatase phase (TiO2) showed significant improvements in the degradation process. The proposed mechanism for complete dye degradation indicated that a sequence of radical reactions is necessary, generating oxidant species such as •OH and the final products were CO2 and H2O.
Collapse
Affiliation(s)
- Johnatan de Oliveira Soares
- Instituto de Química Laboratório de Peneiras Moleculares (LABPEMOL), Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil
| | - Wesley Eulálio Cabral Cavalcanti
- Instituto de Química Laboratório de Peneiras Moleculares (LABPEMOL), Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil
| | - Marco Antonio Morales Torres
- Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil
| | - Sibele Berenice Castella Pergher
- Instituto de Química Laboratório de Peneiras Moleculares (LABPEMOL), Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil
| | - Fernando José Volpi Eusébio De Oliveira
- Instituto de Química Laboratório de Peneiras Moleculares (LABPEMOL), Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil
| | - Tiago Pinheiro Braga
- Instituto de Química Laboratório de Peneiras Moleculares (LABPEMOL), Instituto de Química, Universidade Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil
| |
Collapse
|
14
|
Ionescu BA, Chira M, Vermeșan H, Hegyi A, Lăzărescu AV, Thalmaier G, Neamțu BV, Gabor T, Sur IM. Influence of Fe 2O 3, MgO and Molarity of NaOH Solution on the Mechanical Properties of Fly Ash-Based Geopolymers. Materials (Basel) 2022; 15:6965. [PMID: 36234304 PMCID: PMC9571693 DOI: 10.3390/ma15196965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 09/29/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
The use of waste from industrial activities is of particular importance for environmental protection. Fly ash has a high potential in the production of construction materials. In the present study, the use of fly ash in the production of geopolymer paste and the effect of Fe2O3, MgO and molarity of NaOH solution on the mechanical strength of geopolymer paste are presented. Samples resulting from the heat treatment of the geopolymer paste were subjected to mechanical tests and SEM, EDS and XRD analyses. Samples were obtained using 6 molar and 8 molar NaOH solution with and without the addition of Fe2O3 and MgO. Samples obtained using a 6 molar NaOH solution where Fe2O3 and MgO were added had higher mechanical strengths compared to the other samples.
Collapse
Affiliation(s)
- Brăduț Alexandru Ionescu
- NIRD URBAN-INCERC Cluj-Napoca Branch, 117 Calea Floresti, 400524 Cluj-Napoca, Romania
- IOSUD UTCN Doctoral School, Technical University of Cluj-Napoca, 15 Daicoviciu Street, 400020 Cluj-Napoca, Romania
| | - Mihail Chira
- NIRD URBAN-INCERC Cluj-Napoca Branch, 117 Calea Floresti, 400524 Cluj-Napoca, Romania
| | - Horațiu Vermeșan
- Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Boulevard, 400641 Cluj-Napoca, Romania
| | - Andreea Hegyi
- NIRD URBAN-INCERC Cluj-Napoca Branch, 117 Calea Floresti, 400524 Cluj-Napoca, Romania
| | | | - Gyorgy Thalmaier
- Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Boulevard, 400641 Cluj-Napoca, Romania
| | - Bogdan Viorel Neamțu
- Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Boulevard, 400641 Cluj-Napoca, Romania
| | - Timea Gabor
- Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Boulevard, 400641 Cluj-Napoca, Romania
| | - Ioana Monica Sur
- Faculty of Materials and Environmental Engineering, Technical University of Cluj-Napoca, 103-105 Muncii Boulevard, 400641 Cluj-Napoca, Romania
| |
Collapse
|
15
|
Mazaheri-Tirani M, Kashani A, Koohi-Dehkordi M. The role of iron nanoparticles on morpho-physiological traits and genes expression (IRT 1 and CAT) in rue (Ruta graveolens). Plant Mol Biol 2022; 110:147-160. [PMID: 35793007 DOI: 10.1007/s11103-022-01292-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
The iron nanoparticles with different physic-chemical properties induce inconsistent effects on various studied plant species. Thus, the effect of ferric oxide (Fe2O3) nanoparticles was compared with Fe2O3 microparticles and FeSO4complexes of EDTA for major physiological and gene expression in Rue (Ruta graveolens). Iron root content increased as Fe-MPs + EDTA ˂˂ Fe-NPs + EDTA˂ FeSO4 + EDTA. The shoot's iron remained unchanged or slightly increased under most of FeSO4 and Fe-MPs + EDTA treatments. Under Fe-NPs + EDTA treatment, 50 and 250 µM concentration decreased on shoot iron by 23.2% and 19.4% compared to control, respectively. But the shoot iron at 500 µM NPs was 28.2% higher than that of the control. A 46-58 fold lower Fe translocation was observed under Fe-NPs + EDTA than Fe-MPs + EDTA. The effect of Fe-NPs + EDTA was more significant on plant fresh and dry mass than the control. All treatments showed an increase in anthocyanin by 19-84% in leaves compared to the control. The Fe-NPs + EDTA and MPs + EDTA induced similar effects on enhanced growth parameters, total chlorophyll, catalase enzyme activity, gene, and reduced chlorophyll a/b and oxidants. Catalase enzyme activity in FeSO4 and MPs + EDTA was similar, and in Fe-NPs + EDTA treatments were influenced by coarse and fine regulation mechanisms, respectively. Iron MPs + EDTA had a more negative effect on IRT1 relative gene expression in roots as compared to other iron forms. The IRT1 relative gene expression in shoots was positively affected by 31-81% under all treatment types (except control and 250 µM Fe-NPs + EDTA, and 250 µM MPs + EDTA). These results could reveal the potential mechanism of plant response to nanoparticles.
Collapse
Affiliation(s)
- Maryam Mazaheri-Tirani
- Department of Biology, Faculty of Science, University of Jiroft, Jiroft, 78671-61167, Iran.
| | - Ashraf Kashani
- Department of Agricultural Biotechnology, Payame Noor University (PNU), Tehran, Iran
| | | |
Collapse
|
16
|
Trenczek-Zajac A, Synowiec M, Zakrzewska K, Zazakowny K, Kowalski K, Dziedzic A, Radecka M. Scavenger-Supported Photocatalytic Evidence of an Extended Type I Electronic Structure of the TiO 2@Fe 2O 3 Interface. ACS Appl Mater Interfaces 2022; 14:38255-38269. [PMID: 35969717 PMCID: PMC9412959 DOI: 10.1021/acsami.2c06404] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Heterostructures of TiO2@Fe2O3 with a specific electronic structure and morphology enable us to control the interfacial charge transport necessary for their efficient photocatalytic performance. In spite of the extensive research, there still remains a profound ambiguity as far as the band alignment at the interface of TiO2@Fe2O3 is concerned. In this work, the extended type I heterojunction between anatase TiO2 nanocrystals and α-Fe2O3 hematite nanograins is proposed. Experimental evidence supporting this conclusion is based on direct measurements such as optical spectroscopy, X-ray photoemission spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy (HRTEM), and the results of indirect studies of photocatalytic decomposition of rhodamine B (RhB) with selected scavengers of various active species of OH•, h•, e-, and •O2-. The presence of small 6-8 nm Fe2O3 crystallites at the surface of TiO2 has been confirmed in HRTEM images. Irregular 15-50 nm needle-like hematite grains could be observed in scanning electron micrographs. Substitutional incorporation of Fe3+ ions into the TiO2 crystal lattice is predicted by a 0.16% decrease in lattice parameter a and a 0.08% change of c, as well as by a shift of the Raman Eg(1) peak from 143 cm-1 in pure TiO2 to 149 cm-1 in Fe2O3-modified TiO2. Analysis of O 1s XPS spectra corroborates this conclusion, indicating the formation of oxygen vacancies at the surface of titanium(IV) oxide. The presence of the Fe3+ impurity level in the forbidden band gap of TiO2 is revealed by the 2.80 eV optical transition. The size effect is responsible for the absorption feature appearing at 2.48 eV. Increased photocatalytic activity within the visible range suggests that the electron transfer involves high energy levels of Fe2O3. Well-programed experiments with scavengers allow us to eliminate the less probable mechanisms of RhB photodecomposition and propose a band diagram of the TiO2@Fe2O3 heterojunction.
Collapse
Affiliation(s)
- Anita Trenczek-Zajac
- Faculty
of Materials Science and Ceramics, AGH University
of Science and Technology, Krakow 30-059, Poland
| | - Milena Synowiec
- Faculty
of Materials Science and Ceramics, AGH University
of Science and Technology, Krakow 30-059, Poland
| | - Katarzyna Zakrzewska
- Faculty
of Computer Science, Electronics and Telecommunications, AGH University of Science and Technology, Krakow 30-059, Poland
| | - Karolina Zazakowny
- Faculty
of Materials Science and Ceramics, AGH University
of Science and Technology, Krakow 30-059, Poland
| | - Kazimierz Kowalski
- Faculty
of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow 30-059, Poland
| | - Andrzej Dziedzic
- Institute
of Physics, College of Natural Sciences, University of Rzeszow, Rzeszow 35-310, Poland
| | - Marta Radecka
- Faculty
of Materials Science and Ceramics, AGH University
of Science and Technology, Krakow 30-059, Poland
| |
Collapse
|
17
|
Xue Z, Lu J. Fabrication and application of Fe 2O 3-decorated carbon nanotube fibers via instantaneous Joule-heating method. Nanotechnology 2022; 33:455601. [PMID: 35896090 DOI: 10.1088/1361-6528/ac8486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Fe2O3-decorated carbon nanotube fibers (Fe2O3/CNT fibers) exhibit synergistic properties and can be used in flexible electrochemical devices. One of the greatest challenges is to synthesize homogeneous Fe2O3on CNT fibers. In this paper, we have anchored Fe2O3nanocrystals compactly and uniformly in CNT fibers via the instantaneous Joule-heating method. By regulating the current intensity, iron catalysts in CNT fibers can be directly converted into Fe2O3nanocrystals. This method can also prepare Fe2O3particles of different sizes by adjusting the current value. The distinct structure of Fe2O3/CNT fibers contributed to their excellent electrochemical performance. Because cobaltocene and nickelocene can also be used as catalysts to prepare CNT fibers, this method is expected to be a universal method for the composite of transition metal oxide and CNT fibers.
Collapse
Affiliation(s)
- Zhiping Xue
- Institute of Manufacturing Engineering, Huaqiao University, Xiamen, 361021, People's Republic of China
- National & Local Joint Engineering Research Center for Intelligent Manufacturing Technology of Brittle Material Products, Xiamen, 361021, People's Republic of China
| | - Jing Lu
- Institute of Manufacturing Engineering, Huaqiao University, Xiamen, 361021, People's Republic of China
- National & Local Joint Engineering Research Center for Intelligent Manufacturing Technology of Brittle Material Products, Xiamen, 361021, People's Republic of China
| |
Collapse
|
18
|
EMİL-KAYA E, EVREN B, ERDÖL Z, EKİNCİ D, İPEKOĞLU M, ÖZENLER S. Morphological, microstructural and photocatalytic characterization of undoped and Ni, Co doped Fe 2O 3 particles synthesized by sonochemical method. Turk J Chem 2022; 46:1897-1908. [PMID: 37621333 PMCID: PMC10446927 DOI: 10.55730/1300-0527.3489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/19/2022] [Accepted: 08/02/2022] [Indexed: 12/24/2022] Open
Abstract
In this study, an abundant and eco-friendly photocatalytic material, Fe2O3 particles were synthesized by sonochemical method. Morphological and microstructural investigations of synthesized undoped and Ni, Co-doped Fe2O3 particles were performed. The effect of particle morphology and microstructure on its photocatalytic performance was further investigated. Comparative studies for evaluating particle crystallite sizes were conducted by Williamson-Hall (W-H) method and modified Debye-Scherrer (MDS). Crystallite sizes and lattice strains of Fe2O3 induced by process parameters were calculated by W-H method based on uniform deformation model (UDM). The crystallite sizes of the synthesized powders were calculated in the range of 200 nm and 76 nm by Williamson-Hall analysis. In addition to structural investigation, dislocation density of the synthesized particles was calculated by Williamson-Smallman relation. Afterwards, photocatalytic performance of Fe2O3 particles was investigated in detail. The photodegradation of methylene blue solutions in the presence of light in 20 min with samples 3,4, and 5 in 20 min were 0.937, 0.896, and 0.855, respectively. Moreover, the photodegradation of methylene blue solution with sample 5 for 15, 30, and 45 min were 0.9, 0.828, and 0.757, respectively. A photocatalytic activity of 24.25% has been observed under optimum conditions for the time interval of 45 min.
Collapse
Affiliation(s)
- Elif EMİL-KAYA
- Department of Materials Science and Engineering, Faculty of Georesources and Materials Engineering, RWTH Aachen University, Aachen,
Germany
- Department of Materials Science and Technology, Faculty of Science, Turkish-German University, İstanbul,
Turkey
- Department of Metallurgical and Materials Engineering, Faculty of Chemical and Metallurgical Engineering, İstanbul Technical University, İstanbul,
Turkey
| | - Burak EVREN
- Department of Materials Science and Technology, Faculty of Science, Turkish-German University, İstanbul,
Turkey
- Department of Metallurgical and Materials Engineering, Faculty of Chemical and Metallurgical Engineering, İstanbul Technical University, İstanbul,
Turkey
| | - Zeynep ERDÖL
- Department of Materials Science and Technology, Faculty of Science, Turkish-German University, İstanbul,
Turkey
- Department of Materials Science and Engineering, Faculty of Engineering, Gebze Technical University, Kocaeli,
Turkey
| | - Duygu EKİNCİ
- Department of Materials Science and Technology, Faculty of Science, Turkish-German University, İstanbul,
Turkey
| | - Mehmet İPEKOĞLU
- Department of Mechanical Engineering, Faculty of Engineering, Turkish-German University, İstanbul,
Turkey
| | - Sibel ÖZENLER
- Department of Mechanical Engineering, Faculty of Engineering, Turkish-German University, İstanbul,
Turkey
| |
Collapse
|
19
|
Chen W, Yang S, Liu H, Huang F, Shao Q, Liu L, Sun J, Sun C, Chen D, Dong L. Single-Atom Ce-Modified α-Fe 2O 3 for Selective Catalytic Reduction of NO with NH 3. Environ Sci Technol 2022; 56:10442-10453. [PMID: 35749227 DOI: 10.1021/acs.est.2c02916] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A single-atom Ce-modified α-Fe2O3 catalyst (Fe0.93Ce0.07Ox catalyst with 7% atomic percentage of Ce) was synthesized by a citric acid-assisted sol-gel method, which exhibited excellent performance for selective catalytic reduction of NOx with NH3 (NH3-SCR) over a wide operating temperature window. Remarkably, it maintained ∼93% NO conversion efficiency for 168 h in the presence of 200 ppm SO2 and 5 vol % H2O at 250 °C. The structural characterizations suggested that the introduction of Ce leads to the generation of local Fe-O-Ce sites in the FeOx matrix. Furthermore, it is critical to maintain the atomic dispersion of the Ce species to maximize the amounts of Fe-O-Ce sites in the Ce-doped FeOx catalyst. The formation of CeO2 nanoparticles due to a high doping amount of Ce species leads to a decline in catalytic performance, indicating a size-dependent catalytic behavior. Density functional theory (DFT) calculation results indicate that the formation of oxygen vacancies in the Fe-O-Ce sites is more favorable than that in the Fe-O-Fe sites in the Ce-free α-Fe2O3 catalyst. The Fe-O-Ce sites can promote the oxidation of NO to NO2 on the Fe0.93Ce0.07Ox catalyst and further facilitate the reduction of NOx by NH3. In addition, the decomposition of NH4HSO4 can occur at lower temperatures on the Fe0.93Ce0.07Ox catalyst containing atomically dispersed Ce species than on the α-Fe2O3 reference catalyst, resulting in the good SO2/H2O resistance ability in the NH3-SCR reaction.
Collapse
Affiliation(s)
- Wei Chen
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Shan Yang
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Hao Liu
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Fang Huang
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Qinghao Shao
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Lichen Liu
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
| | - Jingfang Sun
- Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing 210093, P. R. China
| | - Chuanzhi Sun
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Dezhan Chen
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, College of Chemistry, Chemical Engineering and Materials Science, Institute of Materials and Clean Energy, Shandong Normal University, Jinan 250014, P. R. China
| | - Lin Dong
- Jiangsu Key Laboratory of Vehicle Emissions Control, School of the Environment, Nanjing University, Nanjing 210093, P. R. China
| |
Collapse
|
20
|
Zhuang Z, Zhang L, Huang C, Wang X, Guo H, Thomas T, Qu F, Wang P, Yang M. A dimethyl disulfide gas sensor based on nanosized Pt-loaded tetrakaidecahedral α-Fe 2O 3nanocrystals. Nanotechnology 2022; 33:405502. [PMID: 35334476 DOI: 10.1088/1361-6528/ac614c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Surface modification by employing precious metals is one of the most effective ways to improve the gas-sensing performance of metal oxide semiconductors. Pureα-Fe2O3nanoparticles and Pt-modifiedα-Fe2O3nanoparticles were prepared sequentially using a rather simple hydrothermal synthesis and impregnation method. Compared with the originalα-Fe2O3nanomaterials, the Pt-α-Fe2O3nanocomposite sensor shows a higher response value (Ra/Rg = 58.6) and a shorter response/recovery time (1 s/168 s) to 100 ppm dimethyl disulfide (DMDS) gas at 375 °C. In addition, it has better selectivity to DMDS gas with the value of more than 9 times higher than the other target gases at 375 °C. This study indicates that the Pt-α-Fe2O3nanoparticle sensor has good prospects and can be used as a low-cost and effective DMDS gas sensor.
Collapse
Affiliation(s)
- Ziqin Zhuang
- Materials Science and Engineering Department, Dalian Maritime University, Dalian, 116026, People's Republic of China
| | - Li Zhang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Chaozhu Huang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Xiaohang Wang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Haichuan Guo
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Tiju Thomas
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Adyar, Chennai-600036, Tamil Nadu, India
| | - Fengdong Qu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| | - Pei Wang
- Materials Science and Engineering Department, Dalian Maritime University, Dalian, 116026, People's Republic of China
| | - Minghui Yang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China
| |
Collapse
|
21
|
Drewniak S, Drewniak Ł, Pustelny T. Mechanisms of NO 2 Detection in Hybrid Structures Containing Reduced Graphene Oxide: A Review. Sensors (Basel) 2022; 22:5316. [PMID: 35890996 DOI: 10.3390/s22145316] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 06/29/2022] [Accepted: 07/08/2022] [Indexed: 12/10/2022]
Abstract
The sensitive detection of harmful gases, in particular nitrogen dioxide, is very important for our health and environment protection. Therefore, many papers on sensor materials used for NO2 detection have been published in recent years. Materials based on graphene and reduced graphene oxide deserve special attention, as they exhibit excellent sensor properties compared to the other materials. In this paper, we present the most recent advances in rGO hybrid materials developed for NO2 detection. We discuss their properties and, in particular, the mechanism of their interaction with NO2. We also present current problems occuring in this field.
Collapse
|
22
|
Hoseinian MS, Poormoghadam D, Kheirollahzadeh F, Mojtahedi A, Salimi A, Halabian R. Improved neural differentiation of human-induced pluripotent stem cell(hiPSCs) on a novel polyurethane-based scaffold containing iron oxide nanoparticles ( Fe2O3 NPs). Curr Stem Cell Res Ther 2022:CSCR-EPUB-124902. [PMID: 35786193 DOI: 10.2174/1574888x17666220630090418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/18/2022] [Accepted: 04/28/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Repair of the nervous system in humans has always been complicated and faced difficulties. Cell transplantation approaches using biocompatible scaffolds might be an attractive therapeutic strategy for neuronal regeneration. OBJECTIVE We designed a cell delivery platform based on polyurethane [PU] and modified it with iron oxide nanoparticles [Fe2O3 NPs] for neural induction of human-induced pluripotent stem cells [hiPSC]. Forskolin, IBMX, and different ratios of FBS were employed to induce neurogenesis of hiPSCs. Neural differentiations were assessed at the level of genes and proteins. METHOD As was shown by MTT colorimetric assay, the proliferation and viability of SNL 76/7 on PU/ Fe2O3 were superior in comparison with pure PU and Fe2O3. hiPSCs cultured with PU/Fe2O3 exhibited an elevated expression of β3-tubulin, MAP2, NSE, OLIG2, as compared to controls. Furthermore, Acridine Orange staining assured the survival and viability of hiPSCs after 14 days of differentiation. RESULT All in all, our findings pointed out the biocompatibility and positive regulatory effect of PU/Fe2O3 on neural markers. CONCLUSION We believe this scaffold could be a potential candidate for future nerve differentiation applications.
Collapse
Affiliation(s)
- Monireh Sadat Hoseinian
- Faculty of Advanced Sciences and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Delaram Poormoghadam
- Amsterdam University Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | | | - Arya Mojtahedi
- Department of Biology, Borujerd Branch, Islamic Azad University, Borujerd, Iran
| | - Ali Salimi
- Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Raheleh Halabian
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| |
Collapse
|
23
|
Zaheer T, Kandeel M, Abbas RZ, Khan SR, Rehman TU, Aqib AI. Acaricidal Potential and Ecotoxicity of Metallic Nano-Pesticides Used against the Major Life Stages of Hyalomma Ticks. Life 2022; 12:977. [PMID: 35888067 PMCID: PMC9318680 DOI: 10.3390/life12070977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/21/2022] [Accepted: 06/27/2022] [Indexed: 12/02/2022]
Abstract
Ticks (Acari: Ixodidae) are blood-feeding parasites capable of transmitting diseases to animals (Piroplasmosis) and humans (Congo fever, Lyme disease). The non-judicious use of chemical acaricides has led to the development of acaricide-resistant ticks, making the control of ticks and tick-borne diseases difficult. This study reports the efficacy of magnesium oxide (MgO), iron oxide (Fe2O3), and zinc oxide (ZnO) nanoparticles (NPs) as alternatives to traditional acaricides/pesticides using in vitro tests against major representative stages of Hyalomma ticks. Nanopesticides were chemically synthesized as rods (Fe2O3), stars (ZnO), and spheres (MgO) and were characterized by XRD and SEM analysis. The in vitro bioassays included adult immersion, larval immersion, and larval packet tests. Non-target effects of the nanopesticides were evaluated using snails. The LC90 values of Fe2O3 NPs (4.21, 2.83, 0.89 mg/L) were lowest followed by MgO (4.27, 2.91, 0.93 mg/L) and ZnO (4.49, 3.05, 0.69 mg/L), for the tick adult, larval and egg stages, respectively. Fe2O3 NPs were capable of arresting oviposition and larval hatching in the study ticks in vitro. The snail toxicity experiments revealed minimum to mild off-target effects for all nanopesticides tested. This study is the first to report the comparative efficacy of magnesium, iron, and zinc nanomaterials for toxicity in egg, adult and larval stages of Hyalomma ticks. Further studies of NPs on establishing the efficacy against ticks and safety at host-human-environment interface could lead to promising nanopesticde applications.
Collapse
|
24
|
Ramazanov S, Sobola D, Ţălu Ş, Orudzev F, Arman A, Kaspar P, Dallaev R, Ramazanov G. Multiferroic behavior of the functionalized surface of a flexible substrate by deposition of Bi 2 O 3 and Fe 2 O 3. Microsc Res Tech 2022; 85:1300-1310. [PMID: 34820938 DOI: 10.1002/jemt.23996] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/07/2021] [Accepted: 11/10/2021] [Indexed: 02/05/2023]
Abstract
Thin films of bismuth and iron oxides were obtained by atomic layer deposition (ALD) on the surface of a flexible substrate poly(4,4'-oxydiphenylene-pyromellitimide) (Kapton) at a temperature of 250°C. The layer thickness was 50 nm. The samples were examined by secondary-ion mass spectrometry, and uniform distribution of elements in the film layer was observed. Surface morphology, electrical polarization, and mechanical properties were investigated by atomic force microscope, piezoelectric force microscopy, and force modulation microscopy. The values of current in the near-surface layer varied in the range of ±80 pA when a potential of 5 V was applied. Chemical analysis was performed by X-ray photoelectron spectroscopy, where the formation of Bi2 O3 and Fe2 O3 phases, as well as intermediate phases in the Bi-Fe-O system, was observed. Magnetic measurements were carried out by a vibrating sample magnetometer that showed a ferromagnetic response. The low-temperature method of functionalization of the Kapton surface with bismuth and iron oxides will make it possible to adapt the Bi-Fe-O system to flexible electronics.
Collapse
Affiliation(s)
- Shikhgasan Ramazanov
- Faculty of Chemistry, Department of Physical and Organic Chemistry, Dagestan State University, Makhachkala, Russia
| | - Dinara Sobola
- Department of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic
- Academy of Sciences ČR, Institute of Physics of Materials, Brno, Czech Republic
| | - Ştefan Ţălu
- The Technical University of Cluj-Napoca, The Directorate of Research, Development and Innovation Management (DMCDI), Cluj-Napoca, Romania
| | - Farid Orudzev
- Faculty of Chemistry, Department of Physical and Organic Chemistry, Dagestan State University, Makhachkala, Russia
| | - Ali Arman
- Vacuum Technology Research Group, ACECR, Sharif University Branch, Tehran, Iran
| | - Pavel Kaspar
- Department of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic
| | - Rashid Dallaev
- Department of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Brno, Czech Republic
| | - Guseyn Ramazanov
- Faculty of Technology, Course "Design", Dagestan State Technical University, Makhachkala, Russia
| |
Collapse
|
25
|
Reddy B KS, Veeralingam S, Borse PH, Badhulika S. 1D NiO-3D Fe 2O 3mixed dimensional heterostructure for fast response flexible broadband photodetector. Nanotechnology 2022; 33:235201. [PMID: 35203065 DOI: 10.1088/1361-6528/ac5838] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Conventional heterojunction photodetectors rely on planar junction architecture which suffer from low interfacial contact area, inferior light absorption characteristics and complex fabrication schemes. Heterojunctions based on mixed dimensional nanostructures such as 0D-1D, 1D-2D, 1D-3D etc have recently garnered exceptional research interest owing to their atomically sharp interfaces, tunable junction properties such as enhanced light absorption cross-section. In this work, a flexible broadband UV-vis photodetector employing mixed dimensional heterostructure of 1D NiO nanofibers and 3D Fe2O3nanoparticles is fabricated. NiO nanofibers were synthesized via economical and scalable electro-spinning technique and made composite with Fe2O3nanoclusters for hetero-structure fabrication. The optical absorption spectra of NiO nanofibers and Fe2O3nanoparticles exhibit peak absorption in UV and visible spectra, respectively. The as-fabricated photodetector displays quick response times of 0.09 s and 0.18 s and responsivities of 5.7 mA W-1(0.03 mW cm-2) and 5.2 mA W-1(0.01 mW cm-2) for UV and visible spectra, respectively. The fabricated NiO-Fe2O3device also exhibits excellent detectivity in the order of 1012jones. The superior performance of the device is ascribed to the type-II heterojunction between NiO-Fe2O3nanostructures, which results in the localized built-in potential at their interface, that aids in the effective carrier separation and transportation. Further, the flexible photodetector displays excellent robustness when bent over ∼1000 cycles thereby proving its potential towards developing reliable, diverse functional opto-electronic devices.
Collapse
Affiliation(s)
- Kumaar Swamy Reddy B
- Department of Electrical Engineering, Indian Institute of Technology-Hyderabad, Kandi, Sangareddy, Hyderabad, India
- Centre for Nanomaterials, International Advanced Research Centre for Powder, Metallurgy & New Materials, Balapur, Hyderabad, India
| | - Sushmitha Veeralingam
- Department of Electrical Engineering, Indian Institute of Technology-Hyderabad, Kandi, Sangareddy, Hyderabad, India
| | - Pramod H Borse
- Centre for Nanomaterials, International Advanced Research Centre for Powder, Metallurgy & New Materials, Balapur, Hyderabad, India
| | - Sushmee Badhulika
- Department of Electrical Engineering, Indian Institute of Technology-Hyderabad, Kandi, Sangareddy, Hyderabad, India
| |
Collapse
|
26
|
Choi MJ, Kim TL, Choi KS, Sohn W, Lee TH, Lee SA, Park H, Jeong SY, Yang JW, Lee S, Jang HW. Controlled Band Offsets in Ultrathin Hematite for Enhancing the Photoelectrochemical Water Splitting Performance of Heterostructured Photoanodes. ACS Appl Mater Interfaces 2022; 14:7788-7795. [PMID: 35040620 DOI: 10.1021/acsami.1c18886] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Formation of type II heterojunctions is a promising strategy to enhance the photoelectrochemical performance of water-splitting photoanodes, which has been tremendously studied. However, there have been few studies focusing on the formation of type II heterojunctions depending on the thickness of the overlayer. Here, enhanced photoelectrochemical activities of a Fe2O3 film deposited-BiVO4/WO3 heterostructure with different thicknesses of the Fe2O3 layer have been investigated. The Fe2O3 (10 nm)/BiVO4/WO3 heterojunction photoanode shows a much higher photocurrent density compared to the Fe2O3 (100 nm)/BiVO4/WO3 photoanode. The Fe2O3 (10 nm)/BiVO4/WO3 trilayer heterojunction anodes have sequential type II junctions, while a thick Fe2O3 overlayer forms an inverse type II junction between Fe2O3 and BiVO4. Furthermore, the incident-photon-to-current efficiency measured under back-illumination is higher than those measured under front-illumination, demonstrating the importance of the illumination sequence for light absorption and charge transfer and transport. This study shows that the thickness of the oxide overlayer influences the energy band alignment and can be a strategy to improve solar water splitting performance. Based on our findings, we propose a photoanode design strategy for efficient photoelectrochemical water splitting.
Collapse
Affiliation(s)
- Min-Ju Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Taemin L Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Kyoung Soon Choi
- Advanced Nano Surface Research Group, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Woonbae Sohn
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Sol A Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Hoonkee Park
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Sang Yun Jeong
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Jin Wook Yang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Sanghan Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea
| |
Collapse
|
27
|
Pourmadadi M, Ahmadi MJ, Dinani HS, Ajalli N, Dorkoosh F. Theranostic applications of stimulus-responsive systems based on Fe2O3. Pharm Nanotechnol 2022; 10:90-112. [PMID: 35142274 DOI: 10.2174/2211738510666220210105113] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/18/2021] [Accepted: 11/26/2021] [Indexed: 11/22/2022]
Abstract
According to the interaction of nanoparticles with biological systems, enthusiasm for nanotechnology in biomedical applications has been developed in the past decades. Fe2O3 nanoparticles, as the most stable iron oxide, have special merits that make them useful widely for detecting diseases, therapy, drug delivery, and monitoring the therapeutic process. This review presents the fabrication methods of Fe2O3-based materials and their photocatalytic and magnetic properties. Then, we highlight the application of Fe2O3-based nanoparticles in diagnosis and imaging, different therapy methods, and finally, stimulus-responsive systems, such as pH-responsive, magnetic-responsive, redox-responsive, and enzyme-responsive, with an emphasis on cancer treatment. In addition, the potential of Fe2O3 to combine diagnosis and therapy within a single particle called theranostic agent will be discussed.
Collapse
Affiliation(s)
- Mehrab Pourmadadi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Mohammad Javad Ahmadi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | | | - Narges Ajalli
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Farid Dorkoosh
- Faculty of Pharmacy, Tehran University of Medical Science, Tehran, Iran
- Medical Biomaterial Research Center (MBR), Tehran University of Medical Science, Tehran, Iran
| |
Collapse
|
28
|
Dong J, Li Q, Xia W, Lv B, Jing G, Shen H, Yuan CS. Improvement of water resistance by Fe 2O 3/TiO 2 photoelectrocatalysts for formaldehyde removal: experimental and theoretical investigation. Environ Sci Pollut Res Int 2022; 29:13805-13821. [PMID: 34599445 DOI: 10.1007/s11356-021-16459-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
TiO2-based photocatalysts are a potential technology for removing indoor formaldehyde (CHOH) owing to their strong photooxidation ability. However, their photooxidation performance is generally weakened when suffering from the competitive adsorption of H2O. In a method inspired by the oxygen evolution reaction (OER) to generate intermediates with hydroxyl radicals on the anode electrode catalysts, an electric field was employed in this research and applied to the photooxidation of CHOH to prevent the competitive adsorption of H2O. Additionally, 0.5-5% Fe2O3 decorated TiO2 was employed to improve the photoelectrocatalytic activity. The influence of an electric field on hydroxyl-radical production was investigated by both density functional theory (DFT) with direct-imposed dipole momentum and photoelectrocatalytic experimental tests. The surface characterization of the photocatalysts, including transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR), was conducted. DFT results show that a positive electric field with a strength of 0.05 Å/V was more favorable to produce hydroxyl on Fe2O3/TiO2(010) than was a negative electric field. Fe2O3 decoration can significantly boost hydroxyl formation, resulting from a decrease in the binding energy between the Fe of Fe2O3 and the oxygen and hydrogen atoms of H2O. The dissociated hydrogen atom of the H2O preferentially remained on the catalysts' surface rather than being released into the gas flow. The experimental results demonstrated that applying 150 V could not directly enhance the photooxidation of CHOH by either TiO2 or Fe2O3/TiO2 but that it could relieve the H2O inhibitory effect by more than 10% on the Fe2O3/TiO2.
Collapse
Affiliation(s)
- Jing Dong
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China
| | - Qing Li
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China
| | - Wenjie Xia
- Department of Civil and Environmental Engineering, North Dakota State University, Fargo, ND, USA
| | - Bihong Lv
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China
| | - Guohua Jing
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China
| | - Huazhen Shen
- College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, People's Republic of China.
| | - Chung-Shin Yuan
- Institute of Environmental Engineering, National Sun Yat-sen University, No. 70, Lian-Hai Road, Kaohsiung, 804, Taiwan
| |
Collapse
|
29
|
Zhang X, Chen H, Zhang W, Zhang L, Liu X, Ma J, Xu S, Li H. Fabrication of 3D hierarchical Fe 2O 3/SnO 2photoanode for enhanced photoelectrochemical performance. Nanotechnology 2022; 33:155705. [PMID: 34983031 DOI: 10.1088/1361-6528/ac47cd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 01/04/2022] [Indexed: 06/14/2023]
Abstract
Exploring and fabricating a suitable photoanode with high catalytic activity is critical for enhancing photoelectrochemical (PEC) performance. Herein, a novel 3D hierarchical Fe2O3/SnO2photoanode was fabricated by a hydrothermal route, combining with an annealing process. The morphology, crystal structure were studied by scanning electron microscopy, transmission electron microscopy, x-ray photon spectroscopy, and x-ray diffraction, respectively. The results reveal the successful preparation of Fe2O3nanothorns on the surface of SnO2nanosheets. The as-fabricated 3D Fe2O3/SnO2photoanode yields obviously promoted PEC performance with a photocurrent density of approximate 5.85 mA cm-2, measured in a mixture of Na2S (0.25 M) and Na2SO3(0.35 M) aqueous solution at 1.23 V (versus reversible hydrogen electrode, RHE). This value of photocurrent is about 53 times higher than that of the bare SnO2photoanode. The obvious improved PEC properties can be attributed to the 3D Fe2O3/SnO2heterostructures that offer outstanding light harvesting ability as well as improved charge transport and separation. These results suggest that exploring a suitable 3D hierarchical photoanode is an effective approach to boost PEC performance.
Collapse
Affiliation(s)
- Xing Zhang
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
| | - Hao Chen
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
| | - Wei Zhang
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, People's Republic of China
| | - Lina Zhang
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
| | - Xinyu Liu
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
| | - Jinwen Ma
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
| | - Shichong Xu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, People's Republic of China
| | - Haibo Li
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping 136000, People's Republic of China
| |
Collapse
|
30
|
Dong Y, Zeng W, Lin H, Yang Y. Preparation of Fe 2O 3-coated vermiculite composite by hydrophobic agglomeration and its application in As/Cd co-contaminated soil. Environ Technol 2022; 43:83-94. [PMID: 32475297 DOI: 10.1080/09593330.2020.1777589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/29/2020] [Indexed: 06/11/2023]
Abstract
Exploring an economic and efficient method for simultaneous passivation of As and Cd in soils is of great current significance. In this study, a low-cost composite material, Fe2O3-vermiculite (Fe-V), for effectively passivating As/Cd was synthesized successfully based on hydrophobic aggregation method. The reaction products were characterized by XRD, SEM, EDS and FTIR, results showed that Fe2O3 was successfully loaded onto the surface of vermiculite by the connection with sodium stearate and employed this composite material to passivate the co-contaminated soil with As/Cd. All the percentage of toxicity reduction (Pd value) was higher than the control group, which indicated the passivation was effective. In soil A (As 45 mg/kg and Cd 6 mg/kg), the Pd of As were higher than 90%, the Pd of Cd were 80-100%. And in soil B (As 80 mg/kg and Cd 10 mg/kg), the Pd of As were more than 84.68%, the Pds of Cd were about 99%. In the meantime, the application of Fe-V could apparently increase the residual fraction of As and Cd in soil A and soil B. Moreover, the passivation of As and Cd in soils by Fe-V composite materials was a combined physical and chemical action system. This research shows that Fe-V could play a good role in the passivation of As/Cd in different pollution levels of soils.
Collapse
Affiliation(s)
- Yingbo Dong
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
- Beijing Key Laboratory on Resource-Oriented Treatment of Industrial Pollutants, Beijing, People's Republic of China
| | - Weihong Zeng
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
| | - Hai Lin
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
- Beijing Key Laboratory on Resource-Oriented Treatment of Industrial Pollutants, Beijing, People's Republic of China
| | - Yueqing Yang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, People's Republic of China
| |
Collapse
|
31
|
Elhambakhsh A, Heidari S, Keshavarz P. Experimental study of carbon dioxide absorption by Fe 2O 3@glutamine/NMP nanofluid. Environ Sci Pollut Res Int 2022; 29:1060-1072. [PMID: 34341934 DOI: 10.1007/s11356-021-15650-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
In this study, for the first time, the nanoparticle (NP) of Fe2O3@glutamine (C5H10N2O3) was synthesized to improve the Fe2O3 properties in absorbing carbon dioxide (CO2) using the base fluid of hydrous N-methyl-2-pyrrolidone (NMP) solution (50 wt%), as a physically powerful CO2 absorbent. To do this, several nano-NMP solutions, in different weight percentages of NPs, were first prepared. Then, in a batch setup, the nano-NMP solutions were directly exposed to CO2 gaseous (at the pressures of 20, 30, and 40 bar) to clarify the effects of the mass percentage of NPs and initial pressure on CO2 absorption. Results clearly illustrated that Fe2O3 nanofluid was not stable more than 0.025 wt%. However, Fe2O3@glutamine nanofluid was stable approximately two times more than Fe2O3 nanofluid due to the presence of glutamine as a hydrophilic agent in the structure of Fe2O3@glutamine. Moreover, in comparison to the base fluid (NMP solution), although Fe2O3 increased CO2 absorption up to 9.14%, Fe2O3@glutamine NPs caused the CO2 absorption to increase up to 19.41%, which can be determined as the chemical reactions of two amino groups in the glutamine structure with CO2 and also higher stability of Fe2O3@glutamine NPs compared to bare Fe2O3 NPs. To achieve accurate results, all the mentioned experiments were repeated 5 times. The performance of Fe2O3 and Fe2O3@glutamine NPs after the fifth trial reduced by less than 3.5%, which reveals that the synthesized NPs had almost stable efficiency throughout their applications.
Collapse
Affiliation(s)
- Abbas Elhambakhsh
- School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
| | - Samira Heidari
- School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
| | - Peyman Keshavarz
- School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran.
| |
Collapse
|
32
|
Sadiq R, Khan QM, Mobeen A, Shah A. Genotoxicity of aluminium oxide, iron oxide, and copper nanoparticles in mouse bone marrow cells. Arh Hig Rada Toksikol 2021; 72:315-25. [PMID: 34985838 DOI: 10.2478/aiht-2021-72-3578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 11/01/2021] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to evaluate the genotoxic effects of Al2O3, Fe2O3, and Cu nanoparticles with chromosomal aberration (CA), micronucleus (MN), and comet assays on the bone marrow of male BALB/c mice. Three doses of Al2O3, Fe2O3 (75, 150, and 300 mg/kg), or Cu (5, 10, and 15 mg/kg) nanoparticles were administered to mice through intraperitoneal injection once a day for 14 days and compared with negative control (distilled water) and positive control (mitomycin C and methyl methanesulphonate). Al2O3 and Fe2O3 did not show genotoxic effects, but Cu nanoparticles induced significant (P<0.05) genotoxicity at the highest concentration compared to negative control. Our findings add to the health risk information of Al2O3, Fe2O3, and Cu nanoparticles regarding human exposure (occupational and/or through consumer products or medical treatment), and may provide regulatory reference for safe use of these nanoparticles. However, before they can be used safely and released into the environment further chronic in vivo studies are essential.
Collapse
|
33
|
Radin E, Štefanić G, Dražić G, Marić I, Jurkin T, Pustak A, Baran N, Raić M, Gotić M. Solid-State Dispersions of Platinum in the SnO 2 and Fe 2O 3 Nanomaterials. Nanomaterials (Basel) 2021; 11:nano11123349. [PMID: 34947698 PMCID: PMC8704069 DOI: 10.3390/nano11123349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/01/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022]
Abstract
The dispersion of platinum (Pt) on metal oxide supports is important for catalytic and gas sensing applications. In this work, we used mechanochemical dispersion and compatible Fe(II) acetate, Sn(II) acetate and Pt(II) acetylacetonate powders to better disperse Pt in Fe2O3 and SnO2. The dispersion of platinum in SnO2 is significantly different from the dispersion of Pt over Fe2O3. Electron microscopy has shown that the elements Sn, O and Pt are homogeneously dispersed in α-SnO2 (cassiterite), indicating the formation of a (Pt,Sn)O2 solid solution. In contrast, platinum is dispersed in α-Fe2O3 (hematite) mainly in the form of isolated Pt nanoparticles despite the oxidative conditions during annealing. The size of the dispersed Pt nanoparticles over α-Fe2O3 can be controlled by changing the experimental conditions and is set to 2.2, 1.2 and 0.8 nm. The rather different Pt dispersion in α-SnO2 and α-Fe2O3 is due to the fact that Pt4+ can be stabilized in the α-SnO2 structure by replacing Sn4+ with Pt4+ in the crystal lattice, while the substitution of Fe3+ with Pt4+ is unfavorable and Pt4+ is mainly expelled from the lattice at the surface of α-Fe2O3 to form isolated platinum nanoparticles.
Collapse
Affiliation(s)
- Edi Radin
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
| | - Goran Štefanić
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
| | - Goran Dražić
- National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia
- Correspondence: (G.D.); (M.G.)
| | - Ivan Marić
- Radiation Chemistry and Dosimetry Laboratory, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (I.M.); (T.J.); (A.P.)
| | - Tanja Jurkin
- Radiation Chemistry and Dosimetry Laboratory, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (I.M.); (T.J.); (A.P.)
| | - Anđela Pustak
- Radiation Chemistry and Dosimetry Laboratory, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (I.M.); (T.J.); (A.P.)
| | - Nikola Baran
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
| | - Matea Raić
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
| | - Marijan Gotić
- Laboratory for Molecular Physics and Synthesis of New Materials, Ruđer Bošković Institute, Bijenička c. 54, 10000 Zagreb, Croatia; (E.R.); (G.Š.); (N.B.); (M.R.)
- Correspondence: (G.D.); (M.G.)
| |
Collapse
|
34
|
Niu Y, Jiang K, Dong X, Zheng D, Liu B, Wang H. High performance and low power consumption resistive random access memory with Ag/Fe 2O 3/Pt structure. Nanotechnology 2021; 32:505715. [PMID: 34525467 DOI: 10.1088/1361-6528/ac26fd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
Due to magnetic field tunability and the abundance of iron in the Earth's crust, iron oxide-based resistive random access memory (RRAM) is considered to be low cost and potential for multi-level storage. However, the relatively high operation voltage (>1 V) and small storage window (<100) limit its application. In this work, the devices with simple Ag/Fe2O3/Pt structure exhibit typical bipolar resistive switching with ultralow set voltage (Vset) of 0.16 V, ultralow reset voltage (Vreset) of -0.04 V, high OFF/ON resistance ratio of 103, excellent cycling endurance more than 104and good retention time longer than 104s. Each major parameter has about an order of magnitude improvement compared to the previous data. The devices demonstrate outstanding stable low power consumption quality. Based on the analysis of the experimental results, a percolation model of silver ion migration was established and confirmed that low operation voltage is attributed to the amorphous oxide layer with large porosity. During electrical testing, the compliance current (Ic) and maximum reset voltage (Vmax) can also affect the device performance. This discovery suggests Fe2O3memristor has significant potential for application and provides a new idea for the realization of high-performance low-power RRAM.
Collapse
Affiliation(s)
- Yiru Niu
- State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
- Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Kang'an Jiang
- State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
- Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Xinyuan Dong
- State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
- Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Diyuan Zheng
- State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
- Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Binbin Liu
- State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
- Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Hui Wang
- State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
- Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| |
Collapse
|
35
|
Fragoso J, Barreca D, Bigiani L, Sada C, Lebedev OI, Modin E, Pavlovic I, Sánchez L, Maccato C. Tailored Co 3O 4-Based Nanosystems: Toward Photocatalysts for Air Purification. ACS Appl Mater Interfaces 2021; 13:44520-44530. [PMID: 34516100 DOI: 10.1021/acsami.1c09921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The adverse effects of NOx (NO + NO2) gases on the environment and human health have triggered the development of sustainable photocatalysts for their efficient removal (De-NOx). In this regard, the present work focuses on supported Co3O4-based nanomaterials fabricated via chemical vapor deposition (CVD), assessed for the first time as photocatalysts for sunlight-activated NO oxidation. A proof-of-principle investigation on the possibility of tailoring material performances by heterostructure formation is explored through deposition of SnO2 or Fe2O3 onto Co3O4 by radio frequency (RF) sputtering. A comprehensive characterization by complementary analytical tools evidences the formation of high-purity columnar Co3O4 arrays with faceted pyramidal tips, conformally covered by very thin SnO2 and Fe2O3 overlayers. Photocatalytic functional tests highlight an appreciable activity for bare Co3O4 systems, accompanied by a high selectivity in NOx conversion to harmless nitrate species. A preliminary evaluation of De-NOx performances for functionalized systems revealed a direct dependence of the system behavior on the chemical composition, SnO2/Fe2O3 overlayer morphology, and charge transfer events between the single oxide constituents. Taken together, the present results can provide valuable guidelines for the eventual implementation of improved photocatalysts for air purification.
Collapse
Affiliation(s)
- Javier Fragoso
- Department of Inorganic Chemistry and Chemical Engineering, Córdoba University, 14071 Córdoba, Spain
| | - Davide Barreca
- CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
| | - Lorenzo Bigiani
- Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, Italy
| | - Cinzia Sada
- Department of Physics and Astronomy, Padova University and INSTM, 35131 Padova, Italy
| | - Oleg I Lebedev
- Laboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN/UCBN, 14050 Caen, Cedex 4, France
| | - Evgeny Modin
- CIC nanoGUNE BRTA, 20018 Donostia-San Sebastian, Spain
| | - Ivana Pavlovic
- Department of Inorganic Chemistry and Chemical Engineering, Córdoba University, 14071 Córdoba, Spain
| | - Luis Sánchez
- Department of Inorganic Chemistry and Chemical Engineering, Córdoba University, 14071 Córdoba, Spain
| | - Chiara Maccato
- Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, Italy
| |
Collapse
|
36
|
Li W, Li X, Liu J, Zeng MJ, Feng X, Jia X, Yu ZZ. Coating of Wood with Fe 2O 3-Decorated Carbon Nanotubes by One-Step Combustion for Efficient Solar Steam Generation. ACS Appl Mater Interfaces 2021; 13:22845-22854. [PMID: 33970602 DOI: 10.1021/acsami.1c03388] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
As the global water shortage becomes increasingly serious, it is highly imperative to develop efficient, renewable, and large-scale water purification devices. Herein, an efficient solar-driven water purification device of wood coated with Fe2O3 nanoparticle-decorated carbon nanotubes (Fe2O3/CNT) is fabricated in only a few seconds by one-step combustion of ferric acetylacetonate in an ambient environment. The thin layer of the Fe2O3/CNT hybrid coated on the upper surface of the wood serves as a solar-light absorber for converting solar energy to thermal energy, while the thermally insulating wood layer with vertically aligned channels endows the device with rapid water upward transport and localizes the generated heat inside the Fe2O3/CNT layer for solar-driven water evaporation. As a result, the wood/Fe2O3/CNT device achieves a high water steam generation capability of 1.42 kg m-2 h-1 along with an excellent evaporation efficiency of 87.2% under 1 sun irradiation, higher than most of the wood-based solar-driven water evaporation device reported. This device is also efficient in the purification of seawaters and wastewaters. This work demonstrates a rapid and facile methodology for large-scale fabrication of wood/Fe2O3/CNT devices for efficient solar-driven water purification.
Collapse
Affiliation(s)
- Wei Li
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaofeng Li
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ji Liu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
- School of Chemistry, CRANN, AMBER & I-Form, Trinity College Dublin, D2 Dublin, Ireland
| | - Mei-Jiao Zeng
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xinyue Feng
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xueqin Jia
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhong-Zhen Yu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| |
Collapse
|
37
|
Wagner DR, Ament K, Mayr L, Martin T, Bloesser A, Schmalz H, Marschall R, Wagner FE, Breu J. Terrestrial solar radiation driven photodecomposition of ciprofloxacin in clinical wastewater applying mesostructured iron(III) oxide. Environ Sci Pollut Res Int 2021; 28:6222-6231. [PMID: 32996090 PMCID: PMC7838145 DOI: 10.1007/s11356-020-10899-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
Cationic cylindrical polymer brushes based on polybutadiene-block-poly(2-vinylpyridine) were applied as structure-directing agent for mesostructuring Fe2O3 nanoparticles into nanotubes. After temperature-controlled template removal, the obtained non-woven catalysts were tested for the photodegradation of ciprofloxacin under terrestrial solar radiation. At a slightly basic pH value, as typically encountered in clinical wastewaters, the mesostructured Fe2O3 shows a 4.5 times faster degradation of ciprofloxacin than commercial Aeroxide® TiO2 P25. Even wide-bandgap ZnO, mesostructured in the same way, is 1.6 times slower. Moreover, the non-woven-like structure of the catalyst allows for easy recovery of the catalyst and operation in a continuous flow reactor. Graphical abstract.
Collapse
Affiliation(s)
- Daniel R Wagner
- Bavarian Polymer Institute (BPI) and Department of Chemistry, University of Bayreuth, 95440, Bayreuth, Germany
| | - Kevin Ament
- Bavarian Polymer Institute (BPI) and Department of Chemistry, University of Bayreuth, 95440, Bayreuth, Germany
| | - Lina Mayr
- Bavarian Polymer Institute (BPI) and Department of Chemistry, University of Bayreuth, 95440, Bayreuth, Germany
| | - Thomas Martin
- Bavarian Polymer Institute (BPI) and Department of Chemistry, University of Bayreuth, 95440, Bayreuth, Germany
| | - André Bloesser
- Bavarian Polymer Institute (BPI) and Department of Chemistry, University of Bayreuth, 95440, Bayreuth, Germany
| | - Holger Schmalz
- Bavarian Polymer Institute (BPI) and Department of Chemistry, University of Bayreuth, 95440, Bayreuth, Germany
| | - Roland Marschall
- Bavarian Polymer Institute (BPI) and Department of Chemistry, University of Bayreuth, 95440, Bayreuth, Germany
| | - Friedrich E Wagner
- Physics-Department E15, Technical University of Munich, James-Franck-Straße, 85748, Garching, Germany
| | - Josef Breu
- Bavarian Polymer Institute (BPI) and Department of Chemistry, University of Bayreuth, 95440, Bayreuth, Germany.
| |
Collapse
|
38
|
Lai F, Yang C, Lian R, Chu K, Qin J, Zong W, Rao D, Hofkens J, Lu X, Liu T. Three-Phase Boundary in Cross-Coupled Micro-Mesoporous Networks Enabling 3D-Printed and Ionogel-Based Quasi-Solid-State Micro-Supercapacitors. Adv Mater 2020; 32:e2002474. [PMID: 32875671 DOI: 10.1002/adma.202002474] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 08/02/2020] [Indexed: 05/24/2023]
Abstract
The construction of advanced micro-supercapacitors (MSCs) with both wide working-voltage and high energy density is promising but still challenging. In this work, a series of nitrogen-doped, cross-coupled micro-mesoporous carbon-metal networks (N-STC/Mx Oy ) is developed as robust additives to 3D printing inks for MSCs fabrication. Taking the N-STC/Fe2 O3 nanocomposite as an example, both experimental results and theoretical simulations reveal that the well-developed hierarchical networks with abundantly decorated ultrafine Fe2 O3 nanoparticles not only significantly facilitate the ion adsorption at its three-phase boundaries (Fe2 O3 , N-STC, and electrolyte), but also greatly favor ionic diffusion/transport with shortened pathways. Consequently, the as-prepared N-STC/Fe2 O3 electrode delivers a high gravimetric capacitance (267 F g-1 at 2 mV s-1 ) and outstanding stability in a liquid-electrolyte-based symmetric device, as well as a record-high energy density of 114 Wh kg-1 for an asymmetric supercapacitor. Particularly, the gravimetric capacitance of the ionogel-based quasi-solid-state MSCs by 3D printing reaches 377 F g-1 and the device can operate under a wide temperature range (-10 to 60 °C).
Collapse
Affiliation(s)
- Feili Lai
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Chao Yang
- Institute of Materials Science and Technology, Technische Universität Berlin, Straße des 17. Juni, Berlin, 10623, Germany
| | - Ruqian Lian
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Kaibin Chu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Jingjing Qin
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Wei Zong
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| | - Dewei Rao
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Johan Hofkens
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz, 55128, Germany
| | - Xihong Lu
- MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-carbon Chem and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, P. R. China
| | - Tianxi Liu
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, P. R. China
| |
Collapse
|
39
|
Kupracz P, Grochowska K, Karczewski J, Wawrzyniak J, Siuzdak K. The Effect of Laser Re-Solidification on Microstructure and Photo-Electrochemical Properties of Fe-Decorated TiO 2 Nanotubes. Materials (Basel) 2020; 13:E4019. [PMID: 32927898 PMCID: PMC7558024 DOI: 10.3390/ma13184019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/01/2020] [Accepted: 09/08/2020] [Indexed: 11/17/2022]
Abstract
Fossil fuels became increasingly unpleasant energy source due to their negative impact on the environment; thus, attractiveness of renewable, and especially solar energy, is growing worldwide. Among others, the research is focused on smart combination of simple compounds towards formation of the photoactive materials. Following that, our work concerns the optimized manipulation of laser light coupled with the iron sputtering to transform titania that is mostly UV-active, as well as exhibiting poor oxygen evolution reaction to the material responding to solar light, and that can be further used in water splitting process. The preparation route of the material was based on anodization providing well organized system of nanotubes, while magnetron sputtering ensures formation of thin iron films. The last step covering pulsed laser treatment of 355 nm wavelength significantly changes the material morphology and structure, inducing partial melting and formation of oxygen vacancies in the elementary cell. Depending on the applied fluence, anatase, rutile, and hematite phases were recognized in the final product. The formation of a re-solidified layer on the surface of the nanotubes, in which thickness depends on the laser fluence, was shown by microstructure studies. Although a drastic decrement of light absorption was recorded especially in UV range, laser-annealed samples have shown activity under visible light even 20 times higher than bare titania. Electrochemical analysis has shown that the improvement of photoresponse originates mainly from over an order of magnitude higher charge carrier density as revealed by Mott-Schottky analysis. The results show that intense laser light can modulate the semiconductor properties significantly and can be considered as a promising tool towards activation of initially inactive material for the visible light harvesting.
Collapse
Affiliation(s)
- Piotr Kupracz
- Centre of Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery PASci, Fiszera 14 Street, 80-231 Gdańsk, Poland; (J.W.); (K.S.)
| | - Katarzyna Grochowska
- Centre of Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery PASci, Fiszera 14 Street, 80-231 Gdańsk, Poland; (J.W.); (K.S.)
| | - Jakub Karczewski
- Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12 Street, 80-233 Gdańsk, Poland;
| | - Jakub Wawrzyniak
- Centre of Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery PASci, Fiszera 14 Street, 80-231 Gdańsk, Poland; (J.W.); (K.S.)
| | - Katarzyna Siuzdak
- Centre of Plasma and Laser Engineering, The Szewalski Institute of Fluid-Flow Machinery PASci, Fiszera 14 Street, 80-231 Gdańsk, Poland; (J.W.); (K.S.)
| |
Collapse
|
40
|
Qiu W, Luo YX, Liang RP, Qiu JD. Amorphous/Crystalline Hetero-Phase TiO 2 -Coated α-Fe 2 O 3 Core-Shell Nanospindles: A High-Performance Artificial Nitrogen Fixation Electrocatalyst. Chemistry 2020; 26:10226-10229. [PMID: 32227370 DOI: 10.1002/chem.202000695] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Indexed: 11/06/2022]
Abstract
Electrochemical nitrogen fixation techniques have emerged as a promisingly sustainable approach to face the challenge associated with nitrogen activation of ammonia synthesis by the Haber-Bosch process under ambient conditions. Herein, the performance of electrocatalytic nitrogen reduction for the production of α-Fe2 O3 nanospindles coated with mesoporous TiO2 with different crystallinity [denoted as α-Fe2 O3 @mTiO2 -X (X=300, 400, and 500 °C)] were investigated. The as-prepared α-Fe2 O3 @mTiO2 -400 composite exhibits a large NH3 yield (27.2 μg h-1 mgcat. -1 ) at -0. 5 V vs. the reversible hydrogen electrode and a high Faradaic efficiency (13.3 %) in 0.1 m Na2 SO4 , with excellent electrochemical durability. This work presents a novel avenue for the rational design of efficient unique hetero-phase nanocatalysts toward sustainable electrocatalytic N2 fixation.
Collapse
Affiliation(s)
- Weibin Qiu
- College of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Yu-Xi Luo
- College of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Ru-Ping Liang
- College of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, China
| | - Jian-Ding Qiu
- College of Chemistry, Nanchang University, Nanchang, 330031, Jiangxi, China.,College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, 337055, Jiangxi, China
| |
Collapse
|
41
|
Wei G, Wang Y, Zhu R, Yang L. Influence of Desulfurization with Fe 2O 3 on the Reduction of Nickel Converter Slag. Materials (Basel) 2020; 13:ma13102423. [PMID: 32466273 PMCID: PMC7288285 DOI: 10.3390/ma13102423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 11/16/2022]
Abstract
Generally in the nickel converter slag, metals are mainly in the form of sulfides, which are difficult to separate from slag. Although metal oxides in the slag, such as NiO, CoO, and Cu2O, are easily reduced into metal using carbon, the presence of sulfur inhibits the reduction reaction. In this study, the addition of Fe2O3 to nickel converter slag produced desulfurized slag, which enhanced the carbothermal reduction process. Increasing the desulfurization rate promoted the conversion of sulfides into oxides in slag, which significantly increased the activity of NiO, Cu2O, and Fe2O3. However, the residual sulfur content had no significant effect on the activity of FeO and CoO, due to the high initial FeO content and cobalt existing mainly in the form of oxides. The optimum addition of Fe2O3 was 15.0 g per 100 g nickel slag, while the desulfurization ratio was 36.84% and the rates of nikel, cobalt and copper recovery were 95.33%, 77.73%, and 73.83%, respectively.
Collapse
Affiliation(s)
- Guangsheng Wei
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; (G.W.); (R.Z.)
- Beijing Key Laboratory of Research Center of Special Melting and Preparation of High-End Metal Materials, University of Science and Technology Beijing, Beijing 100083, China
| | - Yun Wang
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; (G.W.); (R.Z.)
- The China ENFI Engineering Co., Ltd., Beijing 100038, China
- Correspondence: (Y.W.); (L.Y.)
| | - Rong Zhu
- School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China; (G.W.); (R.Z.)
- Beijing Key Laboratory of Research Center of Special Melting and Preparation of High-End Metal Materials, University of Science and Technology Beijing, Beijing 100083, China
| | - Lingzhi Yang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
- Correspondence: (Y.W.); (L.Y.)
| |
Collapse
|
42
|
Benhammada A, Trache D, Kesraoui M, Chelouche S. Hydrothermal Synthesis of Hematite Nanoparticles Decorated on Carbon Mesospheres and Their Synergetic Action on the Thermal Decomposition of Nitrocellulose. Nanomaterials (Basel) 2020; 10:nano10050968. [PMID: 32443603 PMCID: PMC7711595 DOI: 10.3390/nano10050968] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/17/2020] [Accepted: 04/24/2020] [Indexed: 01/12/2023]
Abstract
In this study, carbon mesospheres (CMS) and iron oxide nanoparticles decorated on carbon mesospheres (Fe2O3-CMS) were effectively synthesized by a direct and simple hydrothermal approach. α-Fe2O3 nanoparticles have been successfully dispersed in situ on a CMS surface. The nanoparticles obtained have been characterized by employing different analytical techniques encompassing Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The produced carbon mesospheres, mostly spherical in shape, exhibited an average size of 334.5 nm, whereas that of Fe2O3 supported on CMS is at around 80 nm. The catalytic effect of the nanocatalyst on the thermal behavior of cellulose nitrate (NC) was investigated by utilizing differential scanning calorimetry (DSC). The determination of kinetic parameters has been carried out using four isoconversional kinetic methods based on DSC data obtained at various heating rates. It is demonstrated that Fe2O3-CMS have a minor influence on the decomposition temperature of NC, while a noticeable diminution of the activation energy is acquired. In contrast, pure CMS have a slight stabilizing effect with an increase of apparent activation energy. Furthermore, the decomposition reaction mechanism of NC is affected by the introduction of the nano-catalyst. Lastly, we can infer that Fe2O3-CMS may be securely employed as an effective catalyst for the thermal decomposition of NC.
Collapse
Affiliation(s)
- Abdenacer Benhammada
- UER Procédés Energétiques, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, Algiers 16046, Algeria; (A.B.); (M.K.); (S.C.)
- Ecole Nationale Préparatoire Aux Etudes d’Ingénieur Badji Mokhtar, ENPEI, BP 5, Rouiba, Algiers 16013, Algeria
| | - Djalal Trache
- UER Procédés Energétiques, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, Algiers 16046, Algeria; (A.B.); (M.K.); (S.C.)
- Correspondence:
| | - Mohamed Kesraoui
- UER Procédés Energétiques, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, Algiers 16046, Algeria; (A.B.); (M.K.); (S.C.)
| | - Salim Chelouche
- UER Procédés Energétiques, Ecole Militaire Polytechnique, BP 17, Bordj El-Bahri, Algiers 16046, Algeria; (A.B.); (M.K.); (S.C.)
| |
Collapse
|
43
|
Ovčačíková H, Vlček J, Matějka V, Juřica J, Maierová P, Mlčoch P. The Effect of Temperature and Milling Process on Steel Scale Utilized as a Pigment for Ceramic Glaze. Materials (Basel) 2020; 13:ma13081814. [PMID: 32290593 PMCID: PMC7216004 DOI: 10.3390/ma13081814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/06/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
This study is focused on the evaluation of the re-utilizability of scale originated during the steel casting and steel rolling processes as a pigment for glazes. Non-oiled scale with Fe3O4 as the major phase were used as a coloring component of transparent glaze matrix in: (i) as received state, (ii) thermally pre-treated at 700 and 900 °C, (iii) mechanically treated in planetary ball mill (60, 120 and 240 min) and (iv) mechanically treated in vibratory disc mill (60 and 120 min). Prepared glazes were applied on the surface of ceramic tiles prepared from a commercially available white ceramic slurry. The resulting tiles with given glaze were thermally treated at 800, 900 and 1060 °C. The pigments were characterized by X-ray powder diffraction method (XRD), X-ray fluorescence spectroscopy (XRF), granulometry (PSD), thermogravimetric analysis (TG) and differential thermal analysis (DTA), scanning electron microscopy (SEM/EDAX). The color of the samples was described by the coordinates L*a*b* from CIELAB color space. The results showed that the non-oiled scale is suitable as the pigment for ceramic glazes. Careful control of the scale treatment process (mechanical as well as thermal) together with the temperature of final glaze firing is necessary to obtain the glaze of desired color and quality.
Collapse
Affiliation(s)
- Hana Ovčačíková
- Department of Thermal Engineering, Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/45, 738 01 Ostrava, Czech Republic; (J.V.); (P.M.)
| | - Jozef Vlček
- Department of Thermal Engineering, Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/45, 738 01 Ostrava, Czech Republic; (J.V.); (P.M.)
| | - Vlastimil Matějka
- Department of Chemistry, Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 738 01 Ostrava, Czech Republic;
| | - Jan Juřica
- Department of Non-ferrous Metals, Refining and Recycling, Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 738 01 Ostrava, Czech Republic;
| | - Petra Maierová
- Department of Thermal Engineering, Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/45, 738 01 Ostrava, Czech Republic; (J.V.); (P.M.)
| | - Petr Mlčoch
- Třinecké železázárny, a.s, Průmyslová 1000 Staré Město, 739 61 Třinec, Czech Republic;
| |
Collapse
|
44
|
Chen H, Luo Q, Liu T, Tai M, Lin J, Murugadoss V, Lin H, Wang J, Guo Z, Wang N. Boosting Multiple Interfaces by Co-Doped Graphene Quantum Dots for High Efficiency and Durability Perovskite Solar Cells. ACS Appl Mater Interfaces 2020; 12:13941-13949. [PMID: 32079392 DOI: 10.1021/acsami.9b23255] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Organic-inorganic hybrid perovskite solar cells (PSCs), as the most rapidly developing next-generation thin-film photovoltaic technology, have attracted extensive research interest, yet their efficiency, scalability, and durability remain challenging. α-Fe2O3 could be used as an electron transporting layer (ETL) of planar PSCs, which exhibits a much higher humidity and UV light-stability compared to TiO2-based planar PSCs. However, the photovoltaic conversion efficiency (PCE) of the Fe2O3-based device was still below 15% because of poor interface contact between α-Fe2O3 and perovskite and poor crystal quality of perovskites. In this work, we have engineered the interfaces throughout the entire solar cell via incorporating N, S co-doped graphene quantum dots (NSGQDs). The NSGQDs played remarkable multifunctional roles: (i) facilitated the perovskite crystal growth; (ii) eased charge extraction at both anode and cathode interfaces; and (iii) induced the defect passivation and suppressed the charge recombination. When assembled with a α-Fe2O3 ETL, the planar PSCs exhibited a significantly increased efficiency from 14 to 19.2%, with concomitant reductions in hysteresis, which created a new record of the PCE for Fe2O3-based PSCs to date. In addition, PSCs with the entire device interfacial engineering showed an obviously improved durability, including prominent humidity, UV light, and thermal stabilities. Our interfacial engineering methodology via graphene quantum dots represents a versatile and effective way for building high efficiency as well as durable PSCs.
Collapse
Affiliation(s)
- Hui Chen
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Qiang Luo
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Tao Liu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Meiqian Tai
- School of Material Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Jing Lin
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006 China
| | - Vignesh Murugadoss
- School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Hong Lin
- School of Material Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Jinshu Wang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Zhanhu Guo
- Integrated Composites Lab (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37934, United States
| | - Ning Wang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| |
Collapse
|
45
|
Zangeneh NP, Sharifnia S, Karamian E. Modification of photocatalytic property of BaTiO 3 perovskite structure by Fe 2O 3 nanoparticles for CO 2 reduction in gas phase. Environ Sci Pollut Res Int 2020; 27:5912-5921. [PMID: 31863370 DOI: 10.1007/s11356-019-07215-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
In this work, perovskite structure of BaTiO3 was coupled with Fe2O3 in different molar ratios achieving the best photocatalytic performance of CO2 reduction in the presence of CH4 as reducing agent; both of them are main greenhouse gases. The photocatalysts were synthesized by facile hydrothermal method. The samples were characterized by XRD, FTIR, FESEM, EDX, UV-Vis DRS, and photoluminescence (PL) analyses. The BaTiO3 synthesized in this research showed a weak PL signal which is due to the intrinsic ferroelectric property as has been observed in previous reports. Compared to the pure BaTiO3 and Fe2O3, the heterojunctions exhibited enhanced photocatalytic activity. The maximum CO2 reduction under visible light irradiation was obtained to be 22% during 60 min process time. The enhanced photocatalytic activity could be attributed to the increased optical absorption, the good separation, and immigration of photogenerated charge carriers that decreased the recombination rate of charge carriers in the n-n heterojunction.
Collapse
Affiliation(s)
- Nazanin Panahi Zangeneh
- Chemical Engineering Department, Catalyst Research Center, Razi University, Kermanshah, 67149-67246, Iran
| | - Shahram Sharifnia
- Chemical Engineering Department, Catalyst Research Center, Razi University, Kermanshah, 67149-67246, Iran.
| | - Elham Karamian
- Chemical Engineering Department, Catalyst Research Center, Razi University, Kermanshah, 67149-67246, Iran
| |
Collapse
|
46
|
Li F, Luo G, Chen W, Chen Y, Fang Y, Zheng M, Yu X. Rational Design and Controllable Synthesis of Multishelled Fe 2O 3@SnO 2@C Nanotubes as Advanced Anode Material for Lithium-/Sodium-Ion Batteries. ACS Appl Mater Interfaces 2019; 11:36949-36959. [PMID: 31535843 DOI: 10.1021/acsami.9b12012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hierarchical Fe2O3 and SnO2 nanostructures have shown great potential for applications in high-performance ion batteries because of their superiority, including wide resources, facile preparation, environmental friendliness, and high energy density. However, some severe challenges, such as rapid capacity decay due to volume expansion upon cycling and poor conductivity, limit their rate performance. To address this issue, multishelled Fe2O3@SnO2@C (FSC) nanotubes were designed and synthesized by using a template method and Ostwald interaction. The as-prepared FSC nanotubes can deliver a high capacity of 1659 mA h g-1 at a current density of 200 mA g-1 and a high reversible capacity of 818 mA h g-1 at 2000 mA g-1 for lithium-ion batteries. Particularly, a high specific capacity of 1024 mA h g-1 is still maintained after 100 charging/discharging cycles at 200 mA g-1. Applied in sodium-ion batteries, the multishelled FSC nanotubes manifest a high specific capacity of 449 mA h g-1 after 180 cycles at 50 mA g-1. Such excellent performances of the as-fabricated FSC nanotubes may be due to the unique multishelled tubular structure, porous characteristics, and high specific surface area. Therefore, the present work provides an outstanding method to improve the energy storage performance of metal oxide composites and other types of nanocomposites.
Collapse
Affiliation(s)
- Fu Li
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Guoen Luo
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Wenyan Chen
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Yuancheng Chen
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Yueping Fang
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Mingtao Zheng
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Xiaoyuan Yu
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| |
Collapse
|
47
|
Xiao H, Cheng Q, Li J, Ge J. Enhanced effects of ash and slag on SO 3 formation in the post-flame region. Environ Sci Pollut Res Int 2019; 26:20920-20928. [PMID: 31115811 DOI: 10.1007/s11356-019-05424-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 05/08/2019] [Indexed: 06/09/2023]
Abstract
The effects of slag, fly ash (formed in boiler above 1500 °C), and experimental ash (formed in muffle furnace at 815 °C) on the formation of sulfur trioxide (SO3) were studied in a fixed bed rector. The results showed that the slag had the best catalytic effect on SO3 formation, the effect of fly ash was second, and the effect of experimental ash was the worst. The reason may be that the forms of iron in different samples were different. Iron in the experimental ash all existed in the form of Fe2O3. Iron in the fly ash mainly existed in the form of composite iron oxides, such as Fe0.3Mg0.7SiO3, Ca3Fe2(SiO4)3, and MgFe2O4. Iron in the slag also mainly existed in the form of composite iron oxides, such as CaFe2O4, MgFe2O4, and CaMgO0.88Fe0.12SiO4. The different forms of iron had different effects on SO3 formation. Composite iron oxides could produce more oxygen vacancies owing to lattice defects. This likely promoted the migration and regeneration of lattice oxygen and thus better promoted the formation of SO3 than Fe2O3. Moreover, MgFe2O4 and Ca3Fe2(SiO4)3 could better promote SO3 formation than CaMgO0.88Fe0.12SiO4 and Fe0.3Mg0.7SiO3. In addition, increasing the SO2 concentration and O2 concentration increased the SO3 concentration but increasing the SO2 concentration decreased the SO3 formation ratio.
Collapse
Affiliation(s)
- Haiping Xiao
- School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China
| | - Qiyong Cheng
- School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China.
| | - Jian Li
- School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China
| | - Jinlin Ge
- School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing, 102206, China
| |
Collapse
|
48
|
Jian Y, Yu T, Jiang Z, Yu Y, Douthwaite M, Liu J, Albilali R, He C. In-Depth Understanding of the Morphology Effect of α-Fe 2O 3 on Catalytic Ethane Destruction. ACS Appl Mater Interfaces 2019; 11:11369-11383. [PMID: 30829030 DOI: 10.1021/acsami.8b21521] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Shape effects of nanocrystal catalysts in different reactions have attracted remarkable attention. In the present work, three types of α-Fe2O3 oxides with different micromorphologies were rationally synthesized via a facile solvothermal method and adopted in deep oxidation of ethane. The physicochemical properties of prepared materials were characterized by XRD, N2 sorption, FE-SEM, HR-TEM, FTIR, in situ DRIFTS, XPS, Mössbauer spectroscopy, in situ Raman, electron energy loss spectroscopy, and H2-TPR. Moreover, the formation energy of oxygen vacancy and surface electronic structure on various crystal faces of α-Fe2O3 were explored by DFT calculations. It is shown that nanosphere-like α-Fe2O3 exhibits much higher ethane destruction activity and reaction stability than nanocube-like α-Fe2O3 and nanorod-like α-Fe2O3 due to larger amounts of oxygen vacancies and lattice defects, which greatly enhance the concentration of reactive oxygen species, oxygen transfer speed, and material redox property. In addition to this, DFT results reveal that nanosphere-like α-Fe2O3 has the lowest formation energy of oxygen vacancy on the (110) facet ( Evo (110) = 1.97 eV) and the strongest adsorption energy for ethane (-0.26 eV) and O2 (-1.58 eV), which can accelerate the ethane oxidation process. This study has deepened the understanding of the face-dependent activities of α-Fe2O3 in alkane destruction.
Collapse
Affiliation(s)
- Yanfei Jian
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , P.R. China
| | - Tingting Yu
- State Key Laboratory of Heavy Oil Processing , China University of Petroleum , Beijing 102249 , P.R. China
| | - Zeyu Jiang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , P.R. China
| | - Yanke Yu
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , P.R. China
- Department of Chemical Engineering , Columbia University , New York , New York 10027 , United States
| | - Mark Douthwaite
- Cardiff Catalysis Institute, School of Chemistry , Cardiff University , Main Building, Park Place , Cardiff CF10 3AT , U.K
| | - Jingyin Liu
- Yunhui Co., Ltd. , Shanghai 201199 , P.R. China
| | - Reem Albilali
- Department of Chemistry, College of Science , Imam Abdulrahman Bin Faisal University , P.O. Box 1982, Dammam 31441 , Saudi Arabia
| | - Chi He
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , Shaanxi , P.R. China
- Cardiff Catalysis Institute, School of Chemistry , Cardiff University , Main Building, Park Place , Cardiff CF10 3AT , U.K
- National Engineering Laboratory for VOCs Pollution Control Material & Technology , University of Chinese Academy of Sciences , Beijing 101408 , P.R. China
| |
Collapse
|
49
|
Liu M, Liu Y, Li Y, Wang K, Guo Y, Li Y, Zhao L. Biomimetic Straw-Like Bundle Cobalt-Doped Fe 2 O 3 Electrodes towards Superior Lithium-Ion Storage. Chemistry 2019; 25:3343-3351. [PMID: 30721542 DOI: 10.1002/chem.201805546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 11/30/2018] [Indexed: 11/05/2022]
Abstract
Biomimetic straw-like bundles of Co-doped Fe2 O3 (SCF), with Co2+ incorporated into the lattice of α-Fe2 O3 , was fabricated through a cost-effective hydrothermal process and used as the anode material for lithium-ion batteries (LIBs). The SCF exhibited ultrahigh initial discharge specific capacity (1760.7 mA h-1 g-1 at 200 mA g-1 ) and cycling stability (with the capacity retention of 1268.3 mA h-1 g-1 after 350 cycles at 200 mA g-1 ). In addition, a superior rate capacity of 376.1 mA h-1 g-1 was obtained at a high current density of 4000 mA g-1 . The remarkable electrochemical lithium storage of SCF is attributed to the Co-doping, which increases the unit cell volume and affects the whole structure. It makes the Li+ insertion-extraction process more flexible. Meanwhile, the distinctive straw-like bundle structure can accelerate Li ion diffusion and alleviate the huge volume expansion upon cycling.
Collapse
Affiliation(s)
- Miao Liu
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, China.,Guangdong Provincial Engineering Technology Research Center for, Low Carbon and Advanced Energy Materials, Guangzhou, 510631, China
| | - Yongmei Liu
- South China Institute of Software Engineering, Guangzhou, 510631, China
| | - Youpeng Li
- Guangdong Provincial Engineering Technology Research Center for, Low Carbon and Advanced Energy Materials, Guangzhou, 510631, China
| | - Kang Wang
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, China
| | - Yayun Guo
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, China.,Guangdong Provincial Engineering Technology Research Center for, Low Carbon and Advanced Energy Materials, Guangzhou, 510631, China
| | - Yanxin Li
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, China.,Guangdong Provincial Engineering Technology Research Center for, Low Carbon and Advanced Energy Materials, Guangzhou, 510631, China
| | - Lingzhi Zhao
- Institute of Opto-Electronic Materials and Technology, South China Normal University, Guangzhou, 510631, China.,Guangdong Provincial Engineering Technology Research Center for, Low Carbon and Advanced Energy Materials, Guangzhou, 510631, China
| |
Collapse
|
50
|
Levasseur D, Mjejri I, Rolland T, Rougier A. Color Tuning by Oxide Addition in PEDOT:PSS-Based Electrochromic Devices. Polymers (Basel) 2019; 11:E179. [PMID: 30960163 PMCID: PMC6401723 DOI: 10.3390/polym11010179] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/09/2019] [Accepted: 01/09/2019] [Indexed: 11/18/2022] Open
Abstract
Poly(3,4-ethylenedi-oxythiophene) (PEDOT) derivatives conducting polymers are known for their great electrochromic (EC) properties offering a reversible blue switch under an applied voltage. Characterizations of symmetrical EC devices, built on combinations of PEDOT thin films, deposited with a bar coater from commercial inks, and separated by a lithium-based ionic membrane, show highest performance for 800 nm thickness. Tuning of the color is further achieved by mixing the PEDOT film with oxides. Taking, in particular, the example of optically inactive iron oxide Fe₂O₃, a dark blue to reddish switch, of which intensity depends on the oxide content, is reported. Careful evaluation of the chromaticity parameters L*, a*, and b*, with oxidizing/reducing potentials, evidences a possible monitoring of the bluish tint.
Collapse
Affiliation(s)
- Delphin Levasseur
- CNRS, Univ. Bordeaux., ICMCB, UMR 5026, Bx INP, F-33600 Pessac, France.
- Aquitaine Sciences Transfert, 33405 Talence, France.
| | - Issam Mjejri
- CNRS, Univ. Bordeaux., ICMCB, UMR 5026, Bx INP, F-33600 Pessac, France.
| | - Thomas Rolland
- CNRS, Univ. Bordeaux., ICMCB, UMR 5026, Bx INP, F-33600 Pessac, France.
| | - Aline Rougier
- CNRS, Univ. Bordeaux., ICMCB, UMR 5026, Bx INP, F-33600 Pessac, France.
| |
Collapse
|