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Synergistic Correlation in the Colloidal Properties of TiO2 Nanoparticles and Its Impact on the Photocatalytic Activity. INORGANICS 2022. [DOI: 10.3390/inorganics10090125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this work, the relationship between the photodegradation rate of methylene blue (MB) and the effective surface charge of titania nanoparticles (TiO2 NPs) in an aqueous solution is addressed. Colloidal dispersions were prepared from TiO2 NPs (4–10 nm) for the heterogenous photocatalysis test. The dispersion properties such as pH, hydrodynamic diameter, zeta potential, and isoelectric point were studied. Acidic TiO2 dispersions (pH = 3.6–4.0) with a positive zeta potential and smaller hydrodynamic diameter exhibit larger colloidal stability and pseudo-first-order kinetics for the degradation of MB. The largest rate constant (5 × 10−2 min−1) corresponded to a conversion of 98% within 75 min under UV light. This enhanced rate is a synergic effect between the surface area, charge, and optimal hydrodynamic diameter of TiO2 NPs. A linear correlation between the calculated values for the absorption cross-section and normalized rate constant was found for the systems under study. It was observed that an eventual increase in the pH (4–5.5) reduces the effective surface charge and dispersion stability, causing a decrease in the rate constants of one order of magnitude (10−3 min−1) for TiO2 agglomerates with a larger hydrodynamic diameter (300–850 nm).
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Hezarcheshmeh NK, Azizian J. Solvent-free synthesis of new spiropyrroloindole compounds using Fe3O4/TiO2/MWCNTs MNCs via multicomponent reactions: assessment of new spiropyrroloindole antioxidant activity. Mol Divers 2022; 26:2011-2024. [DOI: 10.1007/s11030-021-10311-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/02/2021] [Indexed: 11/28/2022]
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Kordmahalleh MY, Moradi AV, Hossaini Z, Golsefidi MA. Synthesis and evaluation of antioxidant and antimicrobial activity of new spiropyrrolopyrrolizine compounds: Using Fe
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O
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/TiO
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/Multiwall carbon nanotubes (MWCNTs) magnetic nanocomposites. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Ahmadi N, Sayyed‐Alangi SZ, Varasteh‐Moradi A. Synthesis and evaluation of antioxidant and antimicrobial activity of new spiropyridine derivatives using Ag/TiO
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/Fe
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@MWCNTs MNCs as efficient organometallic nanocatalyst. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Naser Ahmadi
- Department of Chemistry, Azadshahr Branch Islamic Azad University Azadshahr Iran
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Savari M, Varasteh‐Moradi A, Sayyed‐Alangi SZ, Hossaini Z, Zafarmehrabian R. Ag/Fe
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O
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@MWCNTs as a reusable organometallic nanocatalyst promoted green synthesis of new pyridobenzoazepines: Study of biological activity and reduction of organic pollutants. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mehdi Savari
- Department of Chemistry, Gorgan Branch Islamic Azad University Gorgan Iran
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Qin S, Usman KAS, Hegh D, Seyedin S, Gogotsi Y, Zhang J, Razal JM. Development and Applications of MXene-Based Functional Fibers. ACS APPLIED MATERIALS & INTERFACES 2021; 13:36655-36669. [PMID: 34320810 DOI: 10.1021/acsami.1c08985] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The increasing interest toward wearable and portable electronic devices calls for multifunctional materials and fibers/yarns capable of seamless integration with everyday textiles. To date, one particular gap inhibiting the development of such devices is the production of robust functional fibers with improved electronic conductivity and electrochemical energy storage capability. Recent efforts have been made to produce functional fibers with 2D carbides known as MXenes to address these demands. Ti3C2Tx MXene, in particular, is known for its metallic conductivity and high volumetric capacitance, and has shown promise for fibers and textile-based devices when used either as an additive, coating or the main fiber component. In this spotlight article, we highlight the recent exciting developments in our diverse efforts to fabricate MXene functionalized fibers, along with a critical evaluation of the challenges in processing, which directly affect macroscale material properties and the performance of the subsequent prototype devices. We also provide our assessment of observed and foreseen challenges of the current manufacturing methods and the opportunities arising from recent advances in the development of MXene fibers and paving future avenues for textile design and practical use in advanced applications.
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Affiliation(s)
- Si Qin
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Ken Aldren S Usman
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Dylan Hegh
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Shayan Seyedin
- School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Yury Gogotsi
- A.J. Drexel Nanomaterials Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19143, United States
| | - Jizhen Zhang
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
- Agricultural Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences (CATAS), Zhanjiang, Guangdong 524002, China
| | - Joselito M Razal
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
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Meng F, Wei W, Chen X, Xu X, Jiang M, Jun L, Wang Y, Zhou Z. Design of porous C@Fe3O4hybrid nanotubes with excellent microwave absorption. Phys Chem Chem Phys 2016; 18:2510-6. [DOI: 10.1039/c5cp06687e] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porous hybridizing nanotubes with a structure of amorphous carbon interspersed with Fe3O4were fabricated and demonstrate excellent microwave absorption.
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Affiliation(s)
- Fanbin Meng
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Wei Wei
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Xiangnan Chen
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Xiaoling Xu
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Man Jiang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Lu Jun
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Yong Wang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
| | - Zuowan Zhou
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu 610031
- China
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9
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Cui H, Liang Z, Zhang J, Liu H, Shi J. Enhancement of the photocatalytic activity of a TiO2/carbon aerogel based on a hydrophilic secondary pore structure. RSC Adv 2016. [DOI: 10.1039/c6ra08074j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The surface/interface synergy effect plays a positive role on the spatial separation and utilization of electrons and holes in photocatalytic process, which suggests a potential strategy for designing high efficiency photocatalysts.
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Affiliation(s)
- Hua'nan Cui
- Key Laboratory of Environment and Energy Chemistry of Guangdong Higher Education Institutes
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Zhenxing Liang
- Guangdong Provincial Key Laboratory of Fuel Cell Technology
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- China
| | - JinZhong Zhang
- Department of Chemistry and Biochemistry
- University of California
- Santa Cruz
- USA
| | - Hong Liu
- Key Laboratory of Environment and Energy Chemistry of Guangdong Higher Education Institutes
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
| | - Jianying Shi
- Key Laboratory of Environment and Energy Chemistry of Guangdong Higher Education Institutes
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
- China
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Shao D, Gao J, Xin G, Wang Y, Li L, Shi J, Lian J, Koratkar N, Sawyer S. Cl-Doped ZnO Nanowire Arrays on 3D Graphene Foam with Highly Efficient Field Emission and Photocatalytic Properties. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:4785-4792. [PMID: 26183120 DOI: 10.1002/smll.201501411] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/04/2015] [Indexed: 06/04/2023]
Abstract
An environmentally friendly, low-cost, and large-scale method is developed for fabrication of Cl-doped ZnO nanowire arrays (NWAs) on 3D graphene foam (Cl-ZnO NWAs/GF), and investigates its applications as a highly efficient field emitter and photocatalyst. The introduction of Cl-dopant in ZnO increases free electrons in the conduction band of ZnO and also leads to the rough surface of ZnO NWAs, which greatly improves the field emission properties of the Cl-ZnO NWAs/GF. The Cl-ZnO NWAs/GF demonstrates a low turn-on field (≈1.6 V μm(-1)), a high field enhancement factor (≈12844), and excellent field emission stability. Also, the Cl-ZnO NWAs/GF shows high photocatalytic efficiency under UV irradiation, enabling photodegradation of organic dyes such as RhB within ≈75 min, with excellent recyclability. The excellent photocatalytic performance of the Cl-ZnO NWAs/GF originates from the highly efficient charge separation efficiency at the heterointerface of Cl-ZnO and GF, as well as improved electron transport efficiency due to the doping of Cl. These results open up new possibilities of using Cl-ZnO and graphene-based hybrid nanostructures for various functional devices.
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Affiliation(s)
- Dali Shao
- Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Jian Gao
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Guoqing Xin
- Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Yiping Wang
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Lu Li
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Jian Shi
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Jie Lian
- Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Nikhil Koratkar
- Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
- Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Shayla Sawyer
- Department of Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
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Zhang P, Mo Z, Han L, Wang Y, Zhao G, Zhang C, Li Z. Magnetic recyclable TiO2/multi-walled carbon nanotube nanocomposite: Synthesis, characterization and enhanced photocatalytic activity. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.03.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Saleh TA, Al-Saadi AA. Surface characterization and sorption efficacy of tire-obtained carbon: experimental and semiempirical study of rhodamine B adsorption. SURF INTERFACE ANAL 2015. [DOI: 10.1002/sia.5775] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tawfik A. Saleh
- Department of Chemistry; King Fahd University of Petroleum and Minerals; Dhahran Saudi Arabia
| | - Abdulaziz A. Al-Saadi
- Department of Chemistry; King Fahd University of Petroleum and Minerals; Dhahran Saudi Arabia
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Ye T, Yoong JLK, Peng S, Ramakrishna S. In Response: Applications of carbon-based nanomaterials for water treatment--A business perspective. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2015; 34:957-958. [PMID: 25900473 DOI: 10.1002/etc.2901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- Tao Ye
- National University of Singapore, Singapore
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Kim T, Yang SJ, Sung SJ, Kim YS, Chang MS, Jung H, Park CR. Highly reproducible thermocontrolled electrospun fiber based organic photovoltaic devices. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4481-4487. [PMID: 25650717 DOI: 10.1021/am508250q] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this work, we examined the reasons underlying the humidity-induced morphological changes of electrospun fibers and suggest a method of controlling the electrospun fiber morphology under high humidity conditions. We fabricated OPV devices composed of electrospun fibers, and the performance of the OPV devices depends significantly on the fiber morphology. The evaporation rate of a solvent at various relative humidity was measured to investigate the effects of the relative humidity during electrospinning process. The beaded nanofiber morphology of electrospun fibers was originated due to slow solvent evaporation rate under high humidity conditions. To increase the evaporation rate under high humidity conditions, warm air was applied to the electrospinning system. The beads that would have formed on the electrospun fibers were completely avoided, and the power conversion efficiencies of OPV devices fabricated under high humidity conditions could be restored. These results highlight the simplicity and effectiveness of the proposed method for improving the reproducibility of electrospun nanofibers and performances of devices consisting of the electrospun nanofibers, regardless of the relative humidity.
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Affiliation(s)
- Taehoon Kim
- Carbon Nanomaterials Design Laboratory, Research Institute of Advanced Materials, and Department of Materials Science and Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea
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Are TiO2 nanotubes worth using in photocatalytic purification of air and water? Molecules 2014; 19:15075-87. [PMID: 25244287 PMCID: PMC6270796 DOI: 10.3390/molecules190915075] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 08/29/2014] [Accepted: 09/09/2014] [Indexed: 11/17/2022] Open
Abstract
Titanium dioxide nanotubes (TNT) have mainly been used in dye sensitized solar cells, essentially because of a higher transport rate of electrons from the adsorbed photo-excited dye to the Ti electrode onto which TNT instead of TiO2 nanoparticles (TNP) are attached. The dimension ranges and the two main synthesis methods of TNT are briefly indicated here. Not surprisingly, the particular and regular texture of TNT was also expected to improve the photocatalytic efficacy for pollutant removal in air and water with respect to TNP. In this short review, the validity of this expectation is checked using the regrettably small number of literature comparisons between TNT and commercialized TNP referring to films of similar thickness and layers or slurries containing an equal TiO2 mass. Although the irradiated geometrical area differed for each study, it was identical for each comparison considered here. For the removal of toluene (methylbenzene) or acetaldehyde (ethanal) in air, the average ratio of the efficacy of TNT over that of TiO2 P25 was about 1.5, and for the removal of dyes in water, it was around 1. This lack of major improvement with TNT compared to TNP could partially be due to TNT texture disorders as seems to be suggested by the better average performance of anodic oxidation-prepared TNT. It could also come from the fact that the properties influencing the efficacy are more numerous, their interrelations more complex and their effects more important for pollutant removal than for dye sensitized solar cells and photoelectrocatalysis where the electron transport rate is the crucial parameter.
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Garcia-Gomez NA, Mosqueda HA, Garcia-Gutierrez DI, Sanchez EM. Electrochemical behavior of TiO2/carbon dual nanofibers. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.10.208] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Liu X, Wang M, Zhang S, Pan B. Application potential of carbon nanotubes in water treatment: A review. J Environ Sci (China) 2013; 25:1263-1280. [PMID: 24218837 DOI: 10.1016/s1001-0742(12)60161-2] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Water treatment is the key to coping with the conflict between people's increasing demand for water and the world-wide water shortage. Owing to their unique and tunable structural, physical, and chemical properties, carbon nanotubes (CNTs) have exhibited great potentials in water treatment. This review makes an attempt to provide an overview of potential solutions to various environmental challenges by using CNTs as adsorbents, catalysts or catalyst support, membranes, and electrodes. The merits of incorporating CNT to conventional water-treatment material are emphasized, and the remaining challenges are discussed.
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Affiliation(s)
- Xitong Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
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Zhou G, Liu X, Nan C, Liu Y, Wang D, Chen X. C/N-sensitized self-assembly of mesostructured TiO2 nanospheres with significantly enhanced photocatalytic activity. NEW J CHEM 2013. [DOI: 10.1039/c3nj00003f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Miao YE, Wang R, Chen D, Liu Z, Liu T. Electrospun self-standing membrane of hierarchical SiO2@γ-AlOOH (boehmite) core/sheath fibers for water remediation. ACS APPLIED MATERIALS & INTERFACES 2012; 4:5353-5359. [PMID: 22974085 DOI: 10.1021/am3012998] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Hierarchical SiO(2)@γ-AlOOH (Boehmite) core/sheath fibers are fabricated based on a combination of electrospinning and hydrothermal reaction. γ-AlOOH (Boehmite) nanoplatelets are uniformly anchored on the surface of SiO(2) fibers, which significantly improves the adsorption efficiency of the SiO(2) fiber membrane for organic dyes and microorganisms. Compared to conventional nanoparticle adsorbents, the self-standing membrane thus prepared is highly flexible and easy to handle and retrieve, making it a promising material for water treatment. By virtue of electrospinning and a hydrothermal reaction, it provides possibilities to fabricate other functional fiber membranes with hierarchical structures, which can find potential applications in adsorption, catalysis, filtration, and other environmental remediation fields.
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Affiliation(s)
- Yue-E Miao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, People's Republic of China
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RECENT PROGRESS IN HIERARCHICALLY ORGANIZED POLYMER NANOCOMPOSITES BASED ON ELECTROSPUN NANOFIBERS. ACTA POLYM SIN 2012. [DOI: 10.3724/sp.j.1105.2012.12088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Choi HS, Im JH, Kim T, Park JH, Park CR. Advanced energy storage device: a hybrid BatCap system consisting of battery–supercapacitor hybrid electrodes based on Li4Ti5O12–activated-carbon hybrid nanotubes. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32841k] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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