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Sonia J, Kumara BN, Pinto KJ, Hashim A, Priya ESS, Kalpana B, Thomas R, Sudhakara Prasad K. Disposable paper electrodes for detection of changes in dopamine concentrations in rat brain homogenates. Talanta 2024; 274:125940. [PMID: 38537354 DOI: 10.1016/j.talanta.2024.125940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 03/09/2024] [Accepted: 03/16/2024] [Indexed: 05/04/2024]
Abstract
Dopamine, the main catecholamine neurotransmitter plays an important role in renal, cardiovascular, central nervous systems, and pathophysiological processes. The abnormal dopamine levels can result in neurological disorders such as Parkinson's, Alzheimer's, schizophrenia, acute anxiety, neuroblastoma and also contribute to cognitive dysfunctions. Given the widespread importance of dopamine concentration levels, it is imperative to develop sensors that are able to monitor dopamine. Herein, we have developed pre-anodized disposable paper electrode modified with 1-pyrenebutyric acid, for the selective and sensitive determination of dopamine. The sensor was characterized with Fourier transform infrared spectroscopy, Energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and electrochemical techniques for addressing the robust formation and electrochemical activity. The modified electrode exhibited excellent electrocatalytic activity towards dopamine without the common interference from ascorbic acid. The calibration plot for the dopamine sensor resulted linear range from 0.003 μM to 0.5 μM with a detection limit of 0.11 nM. The sensor's potential utility was tested by monitoring dopamine concentration changes in rat brain homogenates when subjected to neurotoxicity. The developed sensor was validated with gold-standard UV-Vis spectroscopy studies and computational studies were performed to understand the interaction between 1-pyrenebutyric acid and dopamine.
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Affiliation(s)
- J Sonia
- Nanomaterial Research Laboratory (NMRL), Nano Division, Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore, 575 018, India
| | - B N Kumara
- Nanomaterial Research Laboratory (NMRL), Nano Division, Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore, 575 018, India
| | - Kevin Joakim Pinto
- Department of Physiology, Yenepoya Medical College, Yenepoya (Deemed to be University), Mangalore, Karnataka, India
| | - A Hashim
- Department of Forensic Medicine and Toxicology, Yenepoya Medical College, Yenepoya Deemed to be University, Mangalore, Dakshina, Karnataka, 575018, India
| | - E S Sindhu Priya
- Department of Pharmacology, Yenepoya Pharmacy College and Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore, 575018, Karnataka, India
| | - B Kalpana
- Department of Physiology, Yenepoya Medical College, Yenepoya (Deemed to be University), Mangalore, Karnataka, India
| | - Renjith Thomas
- Department of Chemistry, St Berchmans College (Autonomous), Mahatma Gandhi University, Changanassery, Kerala, India
| | - K Sudhakara Prasad
- Nanomaterial Research Laboratory (NMRL), Nano Division, Yenepoya Research Centre, Yenepoya (Deemed to be University), Deralakatte, Mangalore, 575 018, India; Centre for Nutrition Studies, Yenepoya (Deemed to be University), Deralakatte, Mangalore, 575 018, India.
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2
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Iftikhar T, Iftikhar N, Chi G, Qiu W, Xie Y, Liang Z, Huang C, Su L. Unlocking the future of brain research: MOFs, TMOs, and MOFs/TMOs for electrochemical NTMs detection and analysis. Talanta 2024; 267:125146. [PMID: 37688896 DOI: 10.1016/j.talanta.2023.125146] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 09/11/2023]
Abstract
The central nervous system relies heavily on neurotransmitters (NTMs), and NTM imbalances have been linked to a wide range of neurological conditions. Thus, the development of reliable detection techniques is essential for advancing brain studies. This review offers a comprehensive analysis of metal-organic frameworks (MOFs), transition metal oxides (TMOs), and MOFs-derived TMOs (MOFs/TMOs) as materials for electrochemical (EC) sensors targeting the detection of key NTMs, specifically dopamine (DA), epinephrine (EP), and serotonin (SR). The unique properties and diverse families of MOFs and TMOs, along with their nanostructured hybrids, are discussed in the context of EC sensing. The review also addresses the challenges in detecting NTMs and proposes a systematic approach to tackle these obstacles. Despite the vast amount of research on MOFs and TMOs-based EC sensors for DA detection, the review highlights the gaps in the literature for MOFs/TMOs-based EC sensors specifically for EP and SR detection, as well as the limited research on microneedles (MNs)-based EC sensors modified with MOFs, TMOs, and MOFs/TMOs for NTMs detection. This review serves as a foundation to encourage researchers to further explore the potential applications of MOFs, TMOs, and MOFs/TMOs-based EC sensors in the context of neurological disorders and other health conditions related to NTMs imbalances.
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Affiliation(s)
- Tayyaba Iftikhar
- School of Biomedical Engineering, International Health Science Innovation Center, Shenzhen Key Laboratory of Nano-Biosensing Technology, Marshall Laboratory of Biomedical Engineering, Medical School, Shenzhen University, Shenzhen, 518055, PR China
| | - Nishwa Iftikhar
- Department of Medicine, Quaid-e-Azam Medical College, Bahawalpur, Punjab, Pakistan
| | - Guilin Chi
- School of Biomedical Engineering, International Health Science Innovation Center, Shenzhen Key Laboratory of Nano-Biosensing Technology, Marshall Laboratory of Biomedical Engineering, Medical School, Shenzhen University, Shenzhen, 518055, PR China
| | - Wenjing Qiu
- Department of Rheumatology, South China Hospital, Medical School, Shenzhen University, Shenzhen, 518116, PR China
| | - Yuanting Xie
- School of Biomedical Engineering, International Health Science Innovation Center, Shenzhen Key Laboratory of Nano-Biosensing Technology, Marshall Laboratory of Biomedical Engineering, Medical School, Shenzhen University, Shenzhen, 518055, PR China.
| | - Zhen Liang
- School of Biomedical Engineering, International Health Science Innovation Center, Shenzhen Key Laboratory of Nano-Biosensing Technology, Marshall Laboratory of Biomedical Engineering, Medical School, Shenzhen University, Shenzhen, 518055, PR China
| | - Cibo Huang
- Department of Rheumatology, South China Hospital, Medical School, Shenzhen University, Shenzhen, 518116, PR China
| | - Lei Su
- School of Biomedical Engineering, International Health Science Innovation Center, Shenzhen Key Laboratory of Nano-Biosensing Technology, Marshall Laboratory of Biomedical Engineering, Medical School, Shenzhen University, Shenzhen, 518055, PR China.
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Soliman W, Shahat MA. Optimizing the thermophysical qualities of innovative clay-rGO composite bricks for sustainable applications. Sci Rep 2023; 13:21562. [PMID: 38057409 DOI: 10.1038/s41598-023-48966-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 12/01/2023] [Indexed: 12/08/2023] Open
Abstract
This work concerned the development of a unique reduced graphene oxide (rGO) nano-filler to provide innovative opportunities in enhancing the thermophysical performance of clay composite bricks. Whereas, a series of clay-rGO composite bricks were produced, doped with various levels of rGO nanosheets (i.e., 0, 1, 2, 4, and 6 wt% clay). Each clay-rGO composite's microstructure, shrinkage, morphology, density, porosity, and thermophysical characteristics were carefully investigated, and the thermal conductivity performance was optimized. Incorporation of different levels of rGO NPs to the clay matrix allowed all the peaks intensity to rise relative to the untreated one in the XRD pattern. Meanwhile, the inclusion of these doping resulted in a grew in the crystallite sizes and apparent porosity within the compositions. In this vein, shrinkage fracture of fabricated brick composites varied depending on dopants type and levels during the drying and firing processes. Moreover, there are some changes in chemical compositions, as well as wave shifts, suggesting that functional groups of rGO may have contributed to partially introduce carbonyl groups in clay-rGO composites. Besides, the porous topography and bulk density improved rapidly with respect to the plane of the rGO nanosheets within the composites. The differ-dense microstructure displayed in the SEM micrographs supports these outcomes. Remarkably, clay-(4%)rGO compound not only has an optimum thermal conductivity value (0.43 W/mK), but it also has a high heat capacity (1.94 MJ/m3K). These results revealed the exceptional features of rGO sheets such as large surface area with high porosity within the modified clay composites.
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Affiliation(s)
- Wafaa Soliman
- Geology Department, Faculty of Science, Sohag University, Sohâg, Egypt
| | - M Abdelhamid Shahat
- PV Unit, Solar and Space Research Department, National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt.
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Ghosh S, Chakraborty K, Pal T, Ghosh S. Photocatalytic degradation of tetracycline antibiotics by RGO-CdTe composite with enhanced apparent quantum efficiency. Sci Rep 2023; 13:19028. [PMID: 37923790 PMCID: PMC10624855 DOI: 10.1038/s41598-023-46120-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 10/27/2023] [Indexed: 11/06/2023] Open
Abstract
RGO-CdTe composite was synthesized using a straightforward, easy-to-realize, one-pot solvothermal technique. The synthesized composite was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Brunauer-Emmett-Teller method (BET), Raman spectra, UV-Vis absorption, and photoluminescence measurement. The RGO-CdTe composite exhibited 83.6% photocatalytic degradation efficiency for the aqueous tetracycline (TC) antibiotic solution and the apparent quantum yield (AQY) for the same was as high as 22.29% which is 2.63 times higher than that of CdTe. The scavenger investigation demonstrated that although hole acts as the leading active species, despite that, superoxide and hydroxyl radicals have also played crucial roles. The initial pH-dependent photocatalytic performance was measured. The zeta potential of the composite at different pH values was evaluated to establish the photocatalytic performance of the RGO-CdTe towards TC degradation at different pH. The recycling experiment depicts that only a 10% degradation performance declines after 5 times recycle use of the RGO-CdTe photocatalyst. An efficient photocurrent generation in RGO-CdTe thin film device has also been observed. Our study establishes as-synthesized composite of RGO-CdTe as a highly potential, and stable photocatalyst for the degradation of antibiotics from the polluted aqueous environment with a very good photoinduced charge generation efficiency in its solid phase.
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Affiliation(s)
- Suvendu Ghosh
- Department of Physics, Vidyasagar University, Midnapore, WB, 721102, India
| | | | - Tanusri Pal
- Department of Physics, Midnapore College, Midnapore, WB, 721101, India.
| | - Surajit Ghosh
- Department of Physics, Vidyasagar University, Midnapore, WB, 721102, India.
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Singh A, Gautam A, Banerjee S, Singh A, Kushwaha HR. Synthesis of copper-reduced graphene oxide nanomaterials using glucose and study of its antibacterial and anticancer activities. Biomed Mater 2023; 18:065025. [PMID: 37820688 DOI: 10.1088/1748-605x/ad0274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 10/11/2023] [Indexed: 10/13/2023]
Abstract
In this work, glucose-capped copper nanoparticles decorated reduced graphene oxide nanomaterial are synthesized at 100 °C and 200 °C via chemical reduction method and studied for their antibacterial and anticancer activities. Synthesized nanomaterials were characterized using x-ray diffraction, Fourier-transform infrared, transmission electron microscope, and RAMAN. It is observed in transmission electron microscopy and selected area electron diffraction studies that copper nanoparticles deposited onto reduced graphene oxide are smaller than nanoparticles generated in the absence of reduced graphene oxide. Also, the size of copper nanoparticles synthesized at 200 °C is smaller than at 100 °C. Results suggest that Cu/Glu/rGO synthesized at both temperatures showed significant antibacterial activity againstEscherichia coliandBacillus anthracis,similarly, showed significant cell death in cancer cell lines [Cal33 and HCT-116 p53 (+/+)]. Interestingly, the nanomaterials were seen to be more effective against the cancer cell lines harboring aggregating mutant p53. Tumors with aggregating mutants of p53 are difficult to treat hence, Cu/Glu/rGO can be promising therapeutic agents against these difficult cancers. However, the antibacterial and anticancer activity of Cu/Glu/rGO synthesized at 100 °C where Cu2O form is obtained was found to be more effective compared to Cu/Glu/rGO synthesized at 200 °C where Cu form is obtained. Though fine-tuning of the material may be required for its commercial applications.
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Affiliation(s)
- Anu Singh
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Akanksha Gautam
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Sagarika Banerjee
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Awantika Singh
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
| | - Hemant R Kushwaha
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India
- Special Centre for Systems Medicine, Jawaharlal Nehru University, New Delhi 110067, India
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Alim AA, Roslan R, Nadzirah S, Saidi LK, Menon PS, Aziah I, Chang Fu D, Sulaiman SA, Abdul Murad NA, Hamzah AA. Geometrical Characterisation of TiO 2-rGO Field-Effect Transistor as a Platform for Biosensing Applications. MICROMACHINES 2023; 14:1664. [PMID: 37763827 PMCID: PMC10536288 DOI: 10.3390/mi14091664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 09/29/2023]
Abstract
The performance of the graphene-based field-effect transistor (FET) as a biosensor is based on the output drain current (Id). In this work, the signal-to-noise ratio (SNR) was investigated to obtain a high-performance device that produces a higher Id value. Using the finite element method, a novel top-gate FET was developed in a three-dimensional (3D) simulation model with the titanium dioxide-reduced graphene oxide (TiO2-rGO) nanocomposite as the transducer material, which acts as a platform for biosensing application. Using the Taguchi mixed-level method in Minitab software (Version 16.1.1), eighteen 3D models were designed based on an orthogonal array L18 (6134), with five factors, and three and six levels. The parameters considered were the channel length, electrode length, electrode width, electrode thickness and electrode type. The device was fabricated using the conventional photolithography patterning technique and the metal lift-off method. The material was synthesised using the modified sol-gel method and spin-coated on top of the device. According to the results of the ANOVA, the channel length contributed the most, with 63.11%, indicating that it was the most significant factor in producing a higher Id value. The optimum condition for the highest Id value was at a channel length of 3 µm and an electrode size of 3 µm × 20 µm, with a thickness of 50 nm for the Ag electrode. The electrical measurement in both the simulation and experiment under optimal conditions showed a similar trend, and the difference between the curves was calculated to be 28.7%. Raman analyses were performed to validate the quality of TiO2-rGO.
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Affiliation(s)
- Anis Amirah Alim
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
| | - Roharsyafinaz Roslan
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
| | - Sh Nadzirah
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, Kangar 01000, Perlis, Malaysia
| | - Lina Khalida Saidi
- UKM Medical Molecular Biology Institute (UMBI), National University of Malaysia, Cheras 56000, Kuala Lumpur, Malaysia
| | - P Susthitha Menon
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
| | - Ismail Aziah
- Institute for Research in Molecular Medicine (INFORMM), Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia
| | - Dee Chang Fu
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
| | - Siti Aishah Sulaiman
- UKM Medical Molecular Biology Institute (UMBI), National University of Malaysia, Cheras 56000, Kuala Lumpur, Malaysia
| | - Nor Azian Abdul Murad
- UKM Medical Molecular Biology Institute (UMBI), National University of Malaysia, Cheras 56000, Kuala Lumpur, Malaysia
| | - Azrul Azlan Hamzah
- Institute of Microengineering and Nanoelectronics, National University of Malaysia, Bangi 43600, Selangor, Malaysia
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Mergbi M, Galloni MG, Aboagye D, Elimian E, Su P, Ikram BM, Nabgan W, Bedia J, Amor HB, Contreras S, Medina F, Djellabi R. Valorization of lignocellulosic biomass into sustainable materials for adsorption and photocatalytic applications in water and air remediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27484-2. [PMID: 37227629 DOI: 10.1007/s11356-023-27484-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 05/03/2023] [Indexed: 05/26/2023]
Abstract
An exponential rise in global pollution and industrialization has led to significant economic and environmental problems due to the insufficient application of green technology for the chemical industry and energy production. Nowadays, the scientific and environmental/industrial communities push to apply new sustainable ways and/or materials for energy/environmental applications through the so-called circular (bio)economy. One of today's hottest topics is primarily valorizing available lignocellulosic biomass wastes into valuable materials for energy or environmentally related applications. This review aims to discuss, from both the chemistry and mechanistic points of view, the recent finding reported on the valorization of biomass wastes into valuable carbon materials. The sorption mechanisms using carbon materials prepared from biomass wastes by emphasizing the relationship between the synthesis route or/and surface modification and the retention performance were discussed towards the removal of organic and heavy metal pollutants from water or air (NOx, CO2, VOCs, SO2, and Hg0). Photocatalytic nanoparticle-coated biomass-based carbon materials have proved to be successful composites for water remediation. The review discusses and simplifies the most raised interfacial, photonic, and physical mechanisms that might take place on the surface of these composites under light irradiation. Finally, the review examines the economic benefits and circular bioeconomy and the challenges of transferring this technology to more comprehensive applications.
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Affiliation(s)
- Meriem Mergbi
- Faculty of Sciences of Gabes, RL Processes, Energetic, Environment and Electric Systems (PEESE), University of Gabes, 6072, Gabes, Tunisia
- Department of Chemical Engineering, Universitat Rovira I Virgili, 43007, Tarragona, Spain
| | - Melissa Greta Galloni
- Dipartimento di Chimica, Università Degli Studi Di Milano, Via Golgi 19, 20133, Milano, Italy
| | - Dominic Aboagye
- Department of Chemical Engineering, Universitat Rovira I Virgili, 43007, Tarragona, Spain
| | - Ehiaghe Elimian
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo, 315100, China
- Department of Plant Biology and Biotechnology, Faculty of Life Sciences, University of Benin, PMB 1154, Benin City, Nigeria
| | - Peidong Su
- School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing, 100083, China
| | - Belhadj M Ikram
- Department of Chemical Engineering, Universitat Rovira I Virgili, 43007, Tarragona, Spain
| | - Walid Nabgan
- Department of Chemical Engineering, Universitat Rovira I Virgili, 43007, Tarragona, Spain
- Department of Chemical and Environmental Engineering, Malaysia Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
| | - Jorge Bedia
- Chemical Engineering Department, Autonomous University of Madrid, Madrid, Spain
| | - Hedi Ben Amor
- Faculty of Sciences of Gabes, RL Processes, Energetic, Environment and Electric Systems (PEESE), University of Gabes, 6072, Gabes, Tunisia
| | - Sandra Contreras
- Department of Chemical Engineering, Universitat Rovira I Virgili, 43007, Tarragona, Spain
| | - Francisco Medina
- Department of Chemical Engineering, Universitat Rovira I Virgili, 43007, Tarragona, Spain
| | - Ridha Djellabi
- Department of Chemical Engineering, Universitat Rovira I Virgili, 43007, Tarragona, Spain.
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Ryu SY, Hoffmann MR. α-NiO/Ni(OH) 2/AgNP/F-Graphene Composite for Energy Storage Application. ACS OMEGA 2023; 8:10906-10918. [PMID: 37008082 PMCID: PMC10061603 DOI: 10.1021/acsomega.2c07322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/01/2023] [Indexed: 06/19/2023]
Abstract
The α-NiO/Ni(OH)2/AgNP/F-graphene composite, which is silver nanoparticles preanchored on the surface of fluorinated graphene (AgNP/FG) and then added to α-NiO/Ni(OH)2, is investigated as a potential battery material. The addition of AgNP/FG endows the electrochemical redox reaction of α-NiO/Ni(OH)2 with a synergistic effect, resulting in enhanced Faradaic efficiency with the redox reactions of silver accompanied by the OER and the ORR. It resulted in enhanced specific capacitance (F g-1) and capacity (mA h g-1). The specific capacitance of α-NiO/Ni(OH)2 increased from 148 to 356 F g-1 with the addition of AgNP(20)/FG, while it increased to 226 F g-1 with the addition of AgNPs alone without F-graphene. The specific capacitance of α-NiO/Ni(OH)2/AgNP(20)/FG further increased up to 1153 F g-1 with a change in the voltage scan rate from 20 to 5 mV/s and the Nafion-free α-NiO/Ni(OH)2/AgNP(20)/FG composite. In a similar trend, the specific capacity of α-NiO/Ni(OH)2 increased from 266 to 545 mA h g-1 by the addition of AgNP(20)/FG. The performance of hybrid Zn-Ni/Ag/air electrochemical reactions by α-NiO/Ni(OH)2/AgNP(200)/FG and Zn-coupled electrodes indicates a potential for a secondary battery. It results in a specific capacity of 1200 mA h g-1 and a specific energy of 660 W h kg-1, which is divided into Zn-Ni reactions of ∼95 W h kg-1 and Zn-Ag/air reactions of ∼420 W h kg-1, while undergoing a Zn-air reaction of ∼145 W h kg-1.
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Prasad GV, Reddy TM, Narayana AL, Hussain OM, Gopal TV, Shaikshavali P. Construction of the Embedded Li4Ti5O12-MWCNTs Nanocomposite Electrode for Diverse Applications in Electrochemical Sensing and Rechargeable Battery. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02584-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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10
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Mazlan NSN, Salleh KM, Khairunnisa-Atiqah MK, Ainul Hafiza AH, Mostapha M, Ellis AV, Zakaria S. Macro-Size Regenerated Cellulose Fibre Embedded with Graphene Oxide with Antibacterial Properties. Polymers (Basel) 2023; 15:polym15010230. [PMID: 36616578 PMCID: PMC9824509 DOI: 10.3390/polym15010230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/29/2022] [Accepted: 09/06/2022] [Indexed: 01/03/2023] Open
Abstract
Macro-size regenerated cellulose fibres (RCFs) with embedded graphene oxide (GO) were fabricated by dissolving cellulose in a pre-cooled sodium hydroxide (NaOH)/urea solution and regenerated in sulphuric acid (H2SO4) coagulant. Initially, GO was found to disperse well in the cellulose solution due to intercalation with the cellulose; however, this cellulose-GO intercalation was disturbed during the regeneration process, causing agglomeration of GO in the RCF mixture. Agglomerated GO was confirmed at a higher GO content under a Dino-Lite microscope. The crystallinity index (CrI) and thermal properties of the RCFs increased with increasing GO loadings, up to 2 wt.%, and reduced thereafter. Cellulose-GO intercalation was observed at lower GO concentrations, which enhanced the crystallinity and thermal properties of the RCF-GO composite. It was shown that the GO exhibited antibacterial properties in the RCF-GO composite, with the highest bacterial inhibition against E. coli and S. aureus.
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Affiliation(s)
- Nyak Syazwani Nyak Mazlan
- Bioresource and Biorefinery Laboratory, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
| | - Kushairi Mohd Salleh
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
- Renewable Biomass Transformation Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
- Correspondence: (K.M.S.); (S.Z.)
| | | | - Abdul Hair Ainul Hafiza
- Bioresource and Biorefinery Laboratory, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
- Centre of Foundation Studies, Universiti Teknologi MARA, Cawangan Selangor, Kampus Dengkil, Dengkil 43800, Malaysia
| | - Marhaini Mostapha
- Centre of Health Economic Research, Institute Health System Research, National Institute of Health Malaysia, Shah Alam 40171, Malaysia
| | - Amanda V. Ellis
- Department of Chemical Engineering, The University of Melbourne, Grattan Street, Parkville, VIC 3010, Australia
| | - Sarani Zakaria
- Bioresource and Biorefinery Laboratory, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
- Correspondence: (K.M.S.); (S.Z.)
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Athithya S, Manikandan VS, Harish SK, Silambarasan K, Gopalakrishnan S, Ikeda H, Navaneethan M, Archana J. Plasmon Effect of Ag Nanoparticles on TiO 2/rGO Nanostructures for Enhanced Energy Harvesting and Environmental Remediation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:65. [PMID: 36615977 PMCID: PMC9824111 DOI: 10.3390/nano13010065] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 12/10/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
We report Ag nanoparticles infused with mesosphere TiO2/reduced graphene oxide (rGO) nanosheet (TiO2/rGO/Ag) hybrid nanostructures have been successfully fabricated using a series of solution process synthesis routes and an in-situ growth method. The prepared hybrid nanostructure is utilized for the fabrication of photovoltaic cells and the photocatalytic degradation of pollutants. The photovoltaic characteristics of a dye-sensitized solar cell (DSSC) device with plasmonic hybrid nanostructure (TiO2/rGO/Ag) photoanode achieved a highest short-circuit current density (JSC) of 16.05 mA/cm2, an open circuit voltage (VOC) of 0.74 V and a fill factor (FF) of 62.5%. The fabricated plasmonic DSSC device exhibited a maximum power conversion efficiency (PCE) of 7.27%, which is almost 1.7 times higher than the TiO2-based DSSC (4.10%). For the photocatalytic degradation of pollutants, the prepared TiO2/rGO/Ag photocatalyst exhibited superior photodegradation of methylene blue (MB) dye molecules at around 93% and the mineralization of total organic compounds (TOC) by 80% in aqueous solution after 160 min under continuous irradiation with natural sunlight. Moreover, the enhanced performance of the DSSC device and the MB dye degradation exhibited by the hybrid nanostructures are more associated with their high surface area. Therefore, the proposed plasmonic hybrid nanostructure system is a further development for photovoltaics and environmental remediation applications.
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Affiliation(s)
- Seenidurai Athithya
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
| | - Valparai Surangani Manikandan
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
| | - Santhana Krishnan Harish
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
- Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu 432-8011, Japan
| | - Kuppusamy Silambarasan
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
| | - Shanmugam Gopalakrishnan
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
- Nanotechnology Research Center (NRC), SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
| | - Hiroya Ikeda
- Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-Ku, Hamamatsu 432-8011, Japan
| | - Mani Navaneethan
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
- Nanotechnology Research Center (NRC), SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
| | - Jayaram Archana
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603 203, India
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12
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Fluorescence Sensor for Water in Organic Solvent Using Graphene Oxide- Rhodamine B and Cucurbit[7]uril. J Fluoresc 2022; 33:911-921. [PMID: 36520364 DOI: 10.1007/s10895-022-03113-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022]
Abstract
Detection of water in organic solvents gained much importance as these solvents have been used as a medium for conducting organic reactions and water was considered as an inhibitor, when it is present in the reaction medium. There are number of methods available to measure the water content in organic solvents, however, such methods are time consuming and expensive. Here, we developed a facile method for detecting water in organic solvents using an inexpensive fluorescent probe - Rhodamine B decorated Graphene oxide (RBGO). The fluorescent probe, RBGO can be conveniently prepared by mixing the rhodamine B (RB) with graphene oxide (GO) in water. However, the probe will function as a sensor for water in the organic solvents through the release of dye upon interaction with the water present in organic solvents. Surprisingly, combination of cucurbit[7]uril (CB[7]) and RBGO increased the sensitivity of this sensor dramatically for the detection of water. This is the first example of water sensor with best detection limit by the involvement of host molecules such as CB[7]. This sensor displayed the low limit of detection (LOD) for organic solvents (LOD: 0.0015% for DMSO, 0.0025% for DMF), through the two-way process such as decomplexation and encapsulation. We presume that the role of CB [7] can be implemented in other similar sensors to enhance the sensitivity.
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13
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Galata E, Veziri CM, Theodorakopoulos GV, Romanos GE, Pavlatou EA. Composite GO/Ceramic Membranes Prepared via Chemical Attachment: Characterisation and Gas Permeance Properties. MEMBRANES 2022; 12:1181. [PMID: 36557088 PMCID: PMC9787500 DOI: 10.3390/membranes12121181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/19/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Graphene oxide (GO) oligo-layered laminates were self-assembled on porous ceramic substrates via their simple dip-coating into aqueous GO dispersions. To augment the stability of the developed composite GO/ceramic membranes and control the morphology and stacking quality of the formed laminate, short-((3-glycidoxypropyl)trimethoxy silane-GLYMO, (3-aminopropyl)triethoxy silane-APTES), and long-chain (polydopamine-PDA) molecules were involved and examined as interfacial linkers. A comparative study was performed regarding the linker's capacity to enhance the interfacial adhesion between the ceramic surface and the GO deposit and affect the orientation and assemblage characteristics of the adjacent GO nanosheets that composed the formed oligo-layered laminates. Subsequently, by post-filtrating a GO/H2O suspension through the oligo-layered laminate membranes, the respective multi-layered ones have been developed, whereas ethylenediamine (EDA) was used in the suspension as an efficient molecular linker that strongly bonds and interlocks the GO nanosheets. The definition of the best linker and approach was conducted on macroporous α-alumina disks, due to the use of inexpensive raw materials and the ability to fabricate them in the lab with high reproducibility. To validate the concept at a larger scale, while investigating the effect of the porous substrate as regards its micrometer-scale roughness and surface chemistry, specific chemical modifications that yielded membranes with the best gas permeability/selectivity performance were replicated on a commercial single-channel monolith with a ZrO2 microfiltration layer. XRD, Raman, ATR, FESEM, and XPS analyses were conducted to study the structural, physicochemical, surface, and morphological properties of the GO/ceramic composite membranes, whereas permeance results of several gases at various temperatures and trans-membrane pressures were interpreted to shed light on the pore structural features. Concerning the short-chain linkers, the obtained results ascertain that GLYMO causes denser and more uniform assembly of GO nanosheets within the oligo-layered laminate. PDA had the same beneficial effect, as it is a macromolecule. Overall, this study shows that the development of gas-separating membranes, by just dipping the linker-modified substrate into the GO suspension, is not straightforward. The application of post-filtration contributed significantly to this target and the quality of the superficially deposited, thick GO laminate depended on this of the chemically attached oligo-layered one.
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Affiliation(s)
- Evdokia Galata
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 9, Iroon Polytechniou Str., Zografou, 15780 Athens, Greece
- Institute of Nanoscience and Nanotechnology, National Centre of Scientific Research “Demokritos”, Ag. Paraskevi, 15310 Athens, Greece
| | - Charitomeni M. Veziri
- Institute of Nanoscience and Nanotechnology, National Centre of Scientific Research “Demokritos”, Ag. Paraskevi, 15310 Athens, Greece
| | - George V. Theodorakopoulos
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 9, Iroon Polytechniou Str., Zografou, 15780 Athens, Greece
- Institute of Nanoscience and Nanotechnology, National Centre of Scientific Research “Demokritos”, Ag. Paraskevi, 15310 Athens, Greece
| | - George Em. Romanos
- Institute of Nanoscience and Nanotechnology, National Centre of Scientific Research “Demokritos”, Ag. Paraskevi, 15310 Athens, Greece
| | - Evangelia A. Pavlatou
- Laboratory of General Chemistry, School of Chemical Engineering, National Technical University of Athens, Zografou Campus, 9, Iroon Polytechniou Str., Zografou, 15780 Athens, Greece
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Manpetch P, Singhapong W, Jaroenworaluck A. Synthesis and characterization of a novel composite of rice husk-derived graphene oxide with titania microspheres (GO-RH/TiO 2) for effective treatment of cationic dye methylene blue in aqueous solutions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:63917-63935. [PMID: 35467189 DOI: 10.1007/s11356-022-20176-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
Graphene oxide (GO) was synthesized utilizing rice husk (RH) as the starting raw material via a modified Hummers' method. Ground pencil leads were used as a control powder of the starting raw material to monitor the consistency of the synthesis method. TiO2 microspheres were synthesized via a precipitated method using the pluronic F127 solution as the pore template. GO derived from RH (GO-RH) was composited with TiO2 microspheres as GO-RH/TiO2 composites by an impregnation method with weight ratios of 3:1, 2:2, and 1:3. Characterized results revealed GO-RH formed a ternary phase material of graphene oxide, graphite oxide, and silica. A typical microstructure of the calcined TiO2 microspheres was found as the agglomerated anatase nanoparticles. Furthermore, the composites belong to large surface areas and numerous oxygen-containing functionalities on their surfaces. Removal efficiencies of cationic dye methylene blue (MB) from aqueous solutions by the composites, GO-RH and TiO2, were studied under UV illumination for 180 min. Due to the effective combination of adsorption and photodegradation for the MB removal, the composites provided the higher efficiencies (99-100%) faster than those of GO-RH and TiO2 and could be reused at least 4 times. Finally, a mechanism of the MB removal by the composites was proposed.
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Affiliation(s)
- Panlekha Manpetch
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), 114 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Wadwan Singhapong
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), 114 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand
| | - Angkhana Jaroenworaluck
- National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), 114 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, 12120, Thailand.
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Díaz-Sánchez M, Hernández-Benítez I, Díaz-García D, Prashar S, Gómez-Ruiz S. Nanohybrids based on F-doped titanium dioxides and carbon species with enhanced dual adsorption-photodegradation activity for water decontamination. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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16
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Yang M, Ye Z, Iqbal MA, Liang H, Zeng YJ. Progress on two-dimensional binary oxide materials. NANOSCALE 2022; 14:9576-9608. [PMID: 35766429 DOI: 10.1039/d2nr01076c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two-dimensional van der Waals (2D vdW) materials have attracted much attention because of their unique electronic and optical properties. Since the successful isolation of graphene in 2004, many interesting 2D materials have emerged, including elemental olefins (silicene, germanene, etc.), transition metal chalcogenides, transition metal carbides (nitrides), hexagonal boron, etc. On the other hand, 2D binary oxide materials are an important group in the 2D family owing to their high structural diversity, low cost, high stability, and strong adjustability. This review systematically summarizes the research progress on 2D binary oxide materials. We discuss their composition and structure in terms of vdW and non-vdW categories in detail, followed by a discussion of their synthesis methods. In particular, we focus on strategies to tailor the properties of 2D oxides and their emerging applications in different fields. Finally, the challenges and future developments of 2D binary oxides are provided.
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Affiliation(s)
- Manli Yang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518052, Guangdong, China.
| | - Zhixiang Ye
- College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, Guangdong, China
| | - Muhammad Ahsan Iqbal
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518052, Guangdong, China.
| | - Huawei Liang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518052, Guangdong, China.
| | - Yu-Jia Zeng
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518052, Guangdong, China.
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17
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Manisha H, Sonia J, Shashikiran S, Yuvarajan S, Rekha P, Sudhakara Prasad K. Computer numerical control-printed paper electrodes for electrochemical detection of Pseudomonas aeruginosa virulence factor pyocyanin. Electrochem commun 2022. [DOI: 10.1016/j.elecom.2022.107259] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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18
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Liu S, Jiang X, Waterhouse GIN, Zhang ZM, Yu LM. Efficient photoelectrocatalytic degradation of azo-dyes over polypyrrole/titanium oxide/reduced graphene oxide electrodes under visible light: Performance evaluation and mechanism insights. CHEMOSPHERE 2022; 288:132509. [PMID: 34627811 DOI: 10.1016/j.chemosphere.2021.132509] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/06/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
Herein, polypyrrole/titanium oxide/reduced graphene oxide (PTi/r-GO) electrodes were prepared and successfully applied for the photoelectrocatalytic (PEC) degradation of methyl orange (MO) under visible light. Polypyrrole-TiO2 composites rich in p-n heterojunctions were first prepared, then modified with r-GO to improve the electrical conductivity and facilitate charge separation under visible light irradiation. The obtained PTi/r-GO composites were then deposited onto a titanium mesh, which served as the working electrode in PEC experiments. A MO removal efficiency of 93% was achieved in 50 min using PTi/r-GO electrode under PEC conditions (Xe lamp, λ > 420 nm, bias of 0.6 V, 0.1 M Na2SO4 electrolyte), which was far higher than MO removal efficiencies under electrocatalytic oxidation (22%) or photocatalytic oxidation (47%) conditions. This confirmed that excellent activity of the PTi/r-GO electrode under PEC conditions was due to a combination of electrochemical and photocatalytic oxidation processes (involving •OH and •O2- generation). Further, PTi/r-GO was very stable under the applied PEC conditions, with the MO removal efficiency remaining >90% after five cycles. PEC degradation pathways for MO on PTi/r-GO were explored, with a number of key intermediates in the MO mineralization process identified. Results demonstrate that PEC electrodes combining p-type polypyrrole, n-type TiO2 and rGO are very effective in the treatment of hazardous organic compounds in wastewater.
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Affiliation(s)
- Shiben Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, And Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266100, PR China
| | - Xiaohui Jiang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, And Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266100, PR China
| | | | - Zhi-Ming Zhang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, And Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266100, PR China.
| | - Liang-Min Yu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, And Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266100, PR China.
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19
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Ahmed ATA, Bathula C, Soni R, Kim HS, Im H, Lee SW, Kim WK, Gedi S, Kadam AN. Nanostructurally engineered TiO 2 embedded Mentha aquatica biowaste derived carbon for supercapacitor applications. CHEMOSPHERE 2022; 289:133197. [PMID: 34890623 DOI: 10.1016/j.chemosphere.2021.133197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/24/2021] [Accepted: 12/04/2021] [Indexed: 06/13/2023]
Abstract
The invention of cost-effective, clean, and eco-friendly energy storage technology has been capturing a lot of worldwide interest. Herein, biogenically synthesized TiO2 nanoparticles (NPs) were ultrasonically coupled with biomass-derived activated carbon (BAC) to obtain composite (denoted as TiO2@BAC). With the inspiration of nature, Mentha Aquatica leaves extract was employed for biogenic preparation of TiO2 NPs, and residual solid waste (SW) after extract was subsequently utilized for BAC. It is noteworthy that, this unique intensive method does not require any harmful or toxic chemicals and solvents, and no secondary waste is generated. TEM analysis of TiO2@BAC revealed spherical morphology of TiO2 NPs (average size ∼ 18 nm) that were accumulated on nanosheets. Raman, XRD, and XPS manifested the successful construction of TiO2@BAC. The electrochemical performance of the as-synthesized BAC, TiO2 NPs, and TiO2@BAC electrodes was tested towards supercapacitor applications. Notably, the TiO2@BAC electrode exhibited capacitance of 149 F/g at a current density of 1 A/g, which is approximately twice than that of the bare TiO2 electrode (76 F/g) along with excellent capacitance restoration of ∼99%. The TiO2@BAC electrode further revealed outstanding cyclic stability, exhibiting capacitance retention of ∼90% (at 5 A/g) after 10,000 charge/discharge cycles. Furthermore, the TiO2@BAC electrode delivered optimal specific energy density (6.96 Wh/kg) and large power density (2.07 kW/kg at 10 A/g). Moreover, the TiO2@BAC delivers an excellent restoration and retention performances of ∼100 and ∼95% (after 10,000 cycles) at 1 A/g with ∼98% coulombic efficiency in symmetric configuration (maximum cell voltage of 1.2 V).
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Affiliation(s)
- Abu Talha Aqueel Ahmed
- Division of Physics and Semiconductor Science, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Chinna Bathula
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Ritesh Soni
- Department of Chemical Engineering, Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Hyun-Seok Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Hyunsik Im
- Division of Physics and Semiconductor Science, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Sang-Wha Lee
- Department of Chemical and Biological Engineering, Gachon Unversity, Gyeonggi-do, 13120, Republic of Korea
| | - Woo Kyoung Kim
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Sreedevi Gedi
- School of Chemical Engineering, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea.
| | - Abhijit N Kadam
- Department of Chemical and Biological Engineering, Gachon Unversity, Gyeonggi-do, 13120, Republic of Korea.
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20
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Wabaidur SM, Siddiqui MR, Seikh AH. Graphene Oxide (GO) as Sustainable Heterogeneous Carbocatalyst for Synthesis of Organic Carbamates Using Urea and Alcohols under Mild Reaction Conditions. ChemistrySelect 2021. [DOI: 10.1002/slct.202103635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Masoom Raza Siddiqui
- Chemistry Department College of Science King Saud University Riyadh 11451 Saudi Arabia
| | - Asiful H. Seikh
- Mechanical Engineering Department Collage of Engineering King Saud University, P.O. Box 800, Al- Riyadh 11421 Saudi Arabia E-mail: Correspondence
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21
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Wang J, Khorasani Motlagh M, Noroozifar M, Kerman K, Kraatz H. Ferrocene‐Functionalized Multiwalled Carbon Nanotubes for the Simultaneous Determination of Dopamine, Uric Acid, and Xanthine. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Junyan Wang
- Department Physical and Environmental Sciences University of Toronto Scarborough 1265 Military Trail, Toronto M1C1A4 Ontario Canada
| | - Mozhgan Khorasani Motlagh
- Department Physical and Environmental Sciences University of Toronto Scarborough 1265 Military Trail, Toronto M1C1A4 Ontario Canada
| | - Meissam Noroozifar
- Department Physical and Environmental Sciences University of Toronto Scarborough 1265 Military Trail, Toronto M1C1A4 Ontario Canada
| | - Kagan Kerman
- Department Physical and Environmental Sciences University of Toronto Scarborough 1265 Military Trail, Toronto M1C1A4 Ontario Canada
- Department of Chemistry University of Toronto 280 St. George St., Toronto M5S 3H6 Ontario Canada
| | - Heinz‐Bernhard Kraatz
- Department Physical and Environmental Sciences University of Toronto Scarborough 1265 Military Trail, Toronto M1C1A4 Ontario Canada
- Department of Chemistry University of Toronto 280 St. George St., Toronto M5S 3H6 Ontario Canada
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22
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Pervaporation Membranes for Seawater Desalination Based on Geo-rGO-TiO 2 Nanocomposites. Part 1: Microstructure Properties. MEMBRANES 2021; 11:membranes11120966. [PMID: 34940467 PMCID: PMC8708729 DOI: 10.3390/membranes11120966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/01/2021] [Accepted: 12/06/2021] [Indexed: 11/24/2022]
Abstract
This is the first of two papers about the synthesis and microstructure properties of the Geo–rGO–TiO2 ternary nanocomposite, which was designed to suit the criteria of a pervaporation membrane for seawater desalination. The performance and capability of Geo–rGO–TiO2 as a seawater desalination pervaporation membrane are described in the second paper. A geopolymer made from alkali-activated metakaolin was utilized as a binder for the rGO-TiO2 nanocomposite. A modified Hummer’s method was used to synthesize graphene oxide (GO), and a hydrothermal procedure on GO produced reduced graphene oxide (rGO). The adopted approach yielded high-quality GO and rGO, based on Raman spectra results. The nanolayered structure of GO and rGO is revealed by Transmission Electron Microscopy (TEM) images. The Geo–rGO–TiO2 ternary nanocomposite was created by dispersing rGO nanosheets and TiO2 nanoparticles into geopolymer paste and stirring it for several minutes. The mixture was then cured in a sealed mold at 70 °C for one hour. After being demolded, the materials were kept for 28 days before being characterized. Fourier Transform Infrared (FTIR) and X-ray Diffraction (XRD) measurements revealed that the geopolymer matrix efficiently bonded the rGO and TiO2, creating nanocomposites. Scanning Electron Microscopy (SEM) coupled with Energy Dispersive Spectroscopy (EDS) was used to examine the morphology of the outer layer and cross-sections of nanocomposites, and the results displayed that rGO were stacked on the surface as well as in the bulk of the geopolymer and will potentially function as nanochannels with a width of around 0.36 nm, while TiO2 NPs covered the majority of the geopolymer matrix, assisting in anti-biofouling of the membranes. The pores structure of the Geo–rGO–TiO2 were classified as micro–meso pores using the Brunauer–Emmet–Teller (BET) method, indicating that they are appropriate for use as pervaporation membranes. The mechanical strength of the membranes was found to be adequate to withstand high water pressure during the pervaporation process. The addition of rGO and TiO2 NPs was found to improve the hyropobicity of the Geo–rGO–TiO2 nanocomposite, preventing excessive seawater penetration into the membrane during the pervaporation process. The results of this study elucidate that the Geo–rGO–TiO2 nanocomposite has a lot of potential for application as a pervaporation membrane for seawater desalination because all of the initial components are widely available and inexpensive.
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Influence of rGO and Preparation Method on the Physicochemical and Photocatalytic Properties of TiO2/Reduced Graphene Oxide Photocatalysts. Catalysts 2021. [DOI: 10.3390/catal11111333] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
In this study, a series of TiO2/rGO photocatalysts were obtained with a two-step procedure: a solvothermal method and calcination at 300–900 °C in an argon atmosphere. It was noted that the presence of rGO in photocatalysts had an important role in the changes in crystallite size and specific surface area. In TiO2/rGO samples, different surface functional groups, such as C−Cgraph, C−Caliph, C−OH, C=O, and CO(O), were found. It was observed that rGO modification suppressed the anatase-to-rutile phase transformation. The photocatalytic activity of the obtained nanomaterials was investigated through the decomposition of methylene blue under UV and artificial solar light irradiation. It was found that the adsorption degree played an important role in methylene blue decomposition. The experimental results revealed that TiO2/rGO samples exhibited superior removal efficiency after calcination for methylene blue compared toTiO2 without rGO, as well as a commercial photocatalyst KRONOClean 7000. It was noted that photocatalytic activity increased with the increase in the calcination temperature. The highest activity was observed for the sample calcined at 700 °C, which consisted of 76% anatase and 24% rutile. This study clearly demonstrated that TiO2/rGO samples calcined in argon can be used as efficient photocatalysts for the application of methylene blue decomposition.
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Sharma S, Sidhartha PN, Chappanda KN. Influence of laser and alkali treatment on an Ag/TiO 2nanotube based dopamine sensor. NANOTECHNOLOGY 2021; 33:015502. [PMID: 34587590 DOI: 10.1088/1361-6528/ac2b6f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
Herein, TiO2nanotubes (T-NTs) arrays were subjected to two types of treatment followed by a simple metal deposition technique to significantly enhance the performances of T-NTs based electrochemical sensing of dopamine. The first type of treatment was done by soaking T-NTs in sodium hydroxide solution for an optimal time to enhance the conductivity and charge carrier density. The second type of treatment employed was laser irradiation, which induces crystallinity disorder and forms rutile TiO2, promoting active analyte adsorption sites. Afterward, silver (Ag) was electro-deposited on the T-NTs as a dopamine sensing catalyst to form T-NTs/Ag nanohybrids. The dual-treated T-NTs based sensor showed 3-fold enhancement in sensitivity (from 8.2μA mM-1cm-2to 32μA mM-1cm-2), reduced charge transfer resistance (from 38 × 10-6Ω to 0.7 × 10-6Ω), above 2 order higher donor charge density (from 3.58 × 1018cm-3to 1.41 × 1021cm-3), and reduced limit of detection (from 32.3μM to 2.8μM) in comparison to plain T-NTs based sensor. In addition, the sensitivity reported here is significantly higher than most of the previously reported TiO2based dopamine sensors. Perspective-wise, the dual treatment approach is a promising technique and is highly desirable for enhancing the performances of T-NTs and other nanomaterial based electrochemical sensors.
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Affiliation(s)
- Sarda Sharma
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Sciences (BITS), Pilani, Hyderabad Campus, Hyderabad 500078, Telangana, India
| | - P N Sidhartha
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Sciences (BITS), Pilani, Hyderabad Campus, Hyderabad 500078, Telangana, India
| | - Karumbaiah N Chappanda
- Department of Electrical and Electronics Engineering, Birla Institute of Technology and Sciences (BITS), Pilani, Hyderabad Campus, Hyderabad 500078, Telangana, India
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Rezaei A, Rezaei MR, Sayadi MH. Enhanced 3,5-dimethylphenol photodegradation via adsorption-photocatalysis synergy using FSTRG nanohybrid catalyst. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116546] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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26
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Abstract
The engineering of an efficient electrochemical sensor based on a bismuth sulfide/reduced graphene oxide (Bi2S3/rGO) composite to detect ascorbic acid (AA) is reported. The Bi2S3 nanorods/rGO composite was synthesized using a facile hydrothermal method. By varying the amount of graphene oxide (GO) added to the synthesis, the morphology and size of Bi2S3 nanorods anchored on the surface of rGO can be tuned. Compared to a bare glassy carbon electrode (GCE), the GCE modified with Bi2S3/rGO composite presented enhanced electrochemical performance, which was attributed to the optimal electron transport between the rGO support and the loaded Bi2S3 as well as to an increase in the number of active catalytic sites. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) analysis of Bi2S3/rGO/GCE demonstrate that the active Bi2S3/rGO layer on GCE plays an important role in the electrochemical behavior of the sensor. In particular, the Bi2S3/rGO/GCE sensor shows a wide detecting range (5.0–1200 μM), low detection limit (2.9 µM), good sensitivity (268.8 μA mM−1 cm−2), and sufficient recovery values (97.1–101.6%) for the detection of ascorbic acid.
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27
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Ramalingam B, Venkatachalam SS, Kiran MS, Das SK. Rationally designed Shewanella oneidensis Biofilm Toilored Graphene-Magnetite Hybrid Nanobiocomposite as Reusable Living Functional Nanomaterial for Effective Removal of Trivalent Chromium. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 278:116847. [PMID: 33799078 DOI: 10.1016/j.envpol.2021.116847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 01/25/2021] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
Sustainable treatment of wastewater containing trivalent chromium (Cr3+) remains a significant challenge owing to the several limitations of the existing methodologies. Herein, combination of biosynthesis and Response Surface Methodology (RSM) for the fabrication and optimization of Shewanella oneidensis biofilm functionalized graphene-magnetite (GrM) nanobiocomposite was adopted as a 'living functional nanomaterial' (viz. S-GrM) for effective removal of Cr3+ ions from aqueous solution. In the biosynthetic process, S. oneidensis cells reduced the GO-akaganeite complex and adhered on the as-synthesized GrM nanocomposite to form S-GrM hybrid-nanobiocomposite. The process parameters for fabrication of S-GrM hybrid-nanobiocomposite was optimized by RSM based on four responses of easy magnetic separation, biofilm formation along with protein, and carbohydrate contents in extracellular polymeric substances (EPS). The morphology and chemical composition of S-GrM hybrid-nanobiocomposite were investigated using various spectroscopic and microscopic analyses and subsequently explored for removal of Cr3+ ions. The hybrid-nanobiocomposite effectively removed 304.64 ± 14.02 mg/g of Cr3+ at pH 7.0 and 30 °C, which is found to be very high compared to the previously reported values. The high surface area of graphene, biofilm biomass of S. oneidensis and plenty of functional groups provided a unique structure to the S-GrM hybrid-nanobiocomposite for efficient removal of Cr3+ through synergistic interaction. The FTIR and zeta potential studies confirmed that electrostatic and chelation/complexation reaction played key roles in the adsorption process. The fabrication of S-GrM nanobiocomposite thus creates a novel hybrid 'living functional nanomaterial' for low cost, recyclable, and sustainable removal of Cr3+ from wastewater.
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Affiliation(s)
- Baskaran Ramalingam
- Biological Materials Laboratory, Council of Scientific and Industrial Research (CSIR), Central Leather Research Institute (CLRI), Chennai 600020, India; Department of Civil Engineering, A. C. Tech., Anna University, Chennai, 600020, India
| | - Srinivasan Shanmugham Venkatachalam
- Environmental Engineering Division, Council of Scientific and Industrial Research (CSIR)-Central Leather Research Institute (CLRI), Chennai 600020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Manikantan Syamala Kiran
- Biological Materials Laboratory, Council of Scientific and Industrial Research (CSIR), Central Leather Research Institute (CLRI), Chennai 600020, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sujoy K Das
- Biological Materials Laboratory, Council of Scientific and Industrial Research (CSIR), Central Leather Research Institute (CLRI), Chennai 600020, India; Council of Scientific and Industrial Research (CSIR)-Indian Institute of Chemical Biology (IICB), Kolkata, 700032, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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28
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Abd Elkodous M, S El-Sayyad G, Abdel Maksoud MIA, Kumar R, Maegawa K, Kawamura G, Tan WK, Matsuda A. Nanocomposite matrix conjugated with carbon nanomaterials for photocatalytic wastewater treatment. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124657. [PMID: 33272728 DOI: 10.1016/j.jhazmat.2020.124657] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/10/2020] [Accepted: 11/22/2020] [Indexed: 06/12/2023]
Abstract
The problem of hazardous wastewater remediation is a complicated issue and a global challenge. Herein, a layered Co0.5Ni0.5Fe2O4/SiO2/TiO2 composite matrix was prepared and incorporated with three carbon nanomaterials having different dimensionalities, carbon dots (C-dots, 0D), single-walled carbon nanotubes (1D), and reduced graphene oxide (2D), in an effort to create effective photocatalytic nanocomposites for chloramine-T removal from water. Microstructural analyses confirmed the formation of nanocomposites and revealed their chemistry and structure. Elemental mapping revealed a uniform distribution of elements throughout the nanocomposite matrix that was free of impurities. The spherical shape of the matrix particles (average diameter ~90 nm) and their conjugation with the carbon nanomaterials were confirmed. Nitrogen adsorption-desorption isotherms revealed that the nanocomposites were mesoporous but also contained macropores. The surface chemical compositions of the nanocomposites were investigated and showed a range of available binding energies. The kinetics of photocatalysis by the system were studied, and the effects of different parameters (such as photocatalyst dose and charge-carrier scavengers) on the efficiency of chloramine-T degradation were also investigated. The nanocomposite loaded with 10% C-dots exhibited high UV-assisted photocatalytic activity for chloramine-T degradation (65% removal efficiency).
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Affiliation(s)
- M Abd Elkodous
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan; Center for Nanotechnology (CNT), School of Engineering and Applied Sciences, Nile University, Sheikh Zayed, Giza 16453, Egypt
| | - Gharieb S El-Sayyad
- Drug Microbiology Lab, Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt; Chemical Engineering Department, Military Technical College (MTC), Egyptian Armed Forces, Cairo, Egypt
| | - M I A Abdel Maksoud
- Materials Science Lab., Radiation Physics Department, National Center for Radiation Research and Technology (NCRRT), Atomic Energy Authority, Cairo, Egypt
| | - Rajesh Kumar
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Keiichiro Maegawa
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Go Kawamura
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
| | - Wai Kian Tan
- Institute of Liberal Arts and Sciences, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
| | - Atsunori Matsuda
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan.
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29
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Butt AS, Baig N, Khan M, Ul‐Hamid A, Sher M, Altaf M, Sohail M. HfO
2
‐CoO nanoparticles for electrochemical dopamine sensing. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Abdul Samad Butt
- Department of Chemistry, School of Natural Sciences National University of Sciences and Technology Islamabad Pakistan
| | - Nadeem Baig
- Interdisciplinary Research Center for Membranes and Water Security King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia
| | - Munezza Khan
- School of Materials Sciences & Engineering Nanyang Technological University Singapore Singapore
| | - Anwar Ul‐Hamid
- Core Research Facilities King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia
| | - Muhammad Sher
- Department of Chemistry Allama Iqbal Open University Islamabad Pakistan
| | - Muhammad Altaf
- Department of Chemistry Government College University Lahore Pakistan
| | - Manzar Sohail
- Department of Chemistry, School of Natural Sciences National University of Sciences and Technology Islamabad Pakistan
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30
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Padmanabhan NT, Thomas N, Louis J, Mathew DT, Ganguly P, John H, Pillai SC. Graphene coupled TiO 2 photocatalysts for environmental applications: A review. CHEMOSPHERE 2021; 271:129506. [PMID: 33445017 DOI: 10.1016/j.chemosphere.2020.129506] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/28/2020] [Accepted: 12/29/2020] [Indexed: 05/28/2023]
Abstract
Nanostructured photocatalysts have always offered opportunities to solve issues concerned with the environmental challenges caused by rapid urbanization and industrialization. These materials, due to their tunable physicochemical characteristics, are capable of providing a clean and sustainable ecosystem to humanity. One of the current thriving research focuses of visible-light-driven photocatalysts is on the nanocomposites of titanium dioxide (TiO2) with carbon nanostructures, especially graphene. Coupling TiO2 with graphene has proven more active by photocatalysis than TiO2 alone. It is generally considered that graphene sheets act as an electron acceptor facilitating the transfer and separation of photogenerated electrons during TiO2 excitation, thereby reducing electron-hole recombination. This study briefly reviews the fundamental mechanism and interfacial charge-transfer dynamics in TiO2/graphene nanocomposites. Design strategies of various graphene-based hybrids are highlighted along with some specialized synthetic routes adopted to attain preferred properties. Importantly, the enhancing interfacial charge transfer of photogenerated e¯CB through the graphene layers by morphology orientation of TiO2, predominated exposure of their high energy crystal facets, defect engineering, enhancing catalytic sites in graphene, constructing dedicated architectures, tuning the nanomaterial dimensionality at the interface, and employing the synergism adopted through various modifications, are systematically compiled. Portraying the significance of these photocatalytic hybrids in environmental remediation, important applications including air and water purification, self-cleaning surfaces, H2 production, and CO2 reduction to desired fuels, are addressed.
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Affiliation(s)
- Nisha T Padmanabhan
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India
| | - Nishanth Thomas
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland
| | - Jesna Louis
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India; Inter University Centre for Nanomaterials and Devices, Cochin University of Science and Technology, Kerala, India
| | - Dhanu Treasa Mathew
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India
| | - Priyanka Ganguly
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland
| | - Honey John
- Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kerala, India; Inter University Centre for Nanomaterials and Devices, Cochin University of Science and Technology, Kerala, India
| | - Suresh C Pillai
- Nanotechnology and Bio-engineering Research Group, Department of Environmental Science, Institute of Technology Sligo, Sligo, Ireland; Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Institute of Technology Sligo, Sligo, Ireland.
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31
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Efficient Photocatalytic Degradation of Gaseous Benzene and Toluene over Novel Hybrid PIL@TiO2/m-GO Composites. Catalysts 2021. [DOI: 10.3390/catal11010126] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
In this work, the PIL (poly ionic liquid)@TiO2 composite was designed with two polymerized ionic liquid concentrations (low and high) and evaluated for pollutant degradation activity for benzene and toluene. The results showed that PIL (low)@TiO2 composite was more active than PIL (high)@TiO2 composites. The photodegradation rate of benzene and toluene pollutants by PIL (low)@TiO2 and PIL (high)@TiO2 composites was obtained as 86% and 74%, and 59% and 46%, respectively, under optimized conditions. The bandgap of TiO2 was markedly lowered (3.2 eV to 2.2 eV) due to the formation of PIL (low)@TiO2 composite. Besides, graphene oxide (GO) was used to grow the nano-photocatalysts’ specific surface area. The as-synthesized PIL (low)@TiO2@GO composite showed higher efficiency for benzene and toluene degradation which corresponds to 91% and 83%, respectively. The resultant novel hybrid photocatalyst (PIL@TiO2/m-GO) was prepared and appropriately characterized for their microstructural, morphology, and catalytic properties. Among the studied photocatalysts, the PIL (low)@TiO2@m-GO composite exhibits the highest activity in the degradation of benzene (97%) and toluene (97%). The ultimate bandgap of the composite reached 2.1 eV. Our results showed that the as-prepared composites hold an essential role for future considerations over organic pollutants.
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32
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Nirumand L, Farhadi S. Cobalt( ii) Schiff base chemically grafted onto magnetic amino-functionalized reduced graphene oxide nanosheets for highly rapid and selective removal of methyl orange. NEW J CHEM 2021. [DOI: 10.1039/d1nj02118d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A magnetic graphene oxide functionalized with a Co(ii) Schiff base complex (Co(SB)-rGO/ZnFe2O4) was synthesized and applied as an ultrafast adsorbent to remove anionic organic dyes from water.
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Affiliation(s)
- Ladan Nirumand
- Department of Chemistry
- Lorestan University
- Khorramabad 68151-44316
- Iran
| | - Saeed Farhadi
- Department of Chemistry
- Lorestan University
- Khorramabad 68151-44316
- Iran
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33
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Highly sensitive and selective electrochemical detection of dopamine based on CuCrO2-TiO2 composite decorated screen-printed modified electrode. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105694] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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34
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Grace AA, Thillaiarasi S, Dharuman V. Binary Metal Oxide Adsorbed Graphene Modified Glassy Carbon Electrode for Detection of Riboflavin. ELECTROANAL 2020. [DOI: 10.1002/elan.202060429] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Arockiajawahar Anancia Grace
- Molecular Electronics Laboratory Department of Bioelectronics and Biosensors Science Campus Alagappa University Karaikudi 630 004 India
- Department of Industrial Chemistry Alagappa University Karaikudi 630 003 India
| | - Sukumar Thillaiarasi
- Department of Chemistry PSGR Krishnammal college for women Coimbatore 641004 India
| | - Venkataraman Dharuman
- Molecular Electronics Laboratory Department of Bioelectronics and Biosensors Science Campus Alagappa University Karaikudi 630 004 India
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35
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De A, Bera R, Paria S, Karan SK, Das AK, Maitra A, Si SK, Halder L, Ojha S, Khatua BB. Nanostructured cigarette wrapper encapsulated
PDMS‐RGO
sandwiched composite for high performance
EMI
shielding applications. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25536] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Anurima De
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Ranadip Bera
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Sarbaranjan Paria
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Sumanta Kumar Karan
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Amit Kumar Das
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Anirban Maitra
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Suman Kumar Si
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Lopamudra Halder
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Suparna Ojha
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Bhanu Bhusan Khatua
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
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36
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Adhikari J, Rizwan M, Koh D, Keasberry NA, Ahmed MU. Electrochemical Study of Dimensional Specific Carbon Nanomaterials Modified Glassy Carbon Electrode for Highly Sensitive Label-free Detection of Immunoglobulin A. CURR ANAL CHEM 2020. [DOI: 10.2174/1573411015666190925152124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Immunoglobulin A (IgA) accounts for 15% of total protein production per
day and plays a crucial role in the first-line immune defence. Recently, IgA has been established as a
vital clinical biomarker for nephropathy, allergic asthma, celiac disease (CD), pneumonia, and asthma
as well as some neurological disorders. In this work, we have studied several carbon nanomaterials
(CNMs) having different dimensions (D): carbon nano-onions (CNOs) - 0D, single-walled carbon
nanotubes (SWCNTs) - 1D, and graphene nanoplatelets (GNPs) - 2D, on glassy carbon electrode
(GCE) to identify which CNMs (CNOs/SWCNTs/GNPs) work best to fabricate IgA based electrochemical
immunosensor.
Methods:
Different CNMs (CNOs, SWCNTs, GNPs) were tested for high electric current on GCE
using square wave voltammetry (SWV), and among them, GNPs modified GCE platform
(GNPs/GCE) showcased the highest electric current. Therefore, GNPs/GCE was utilized for the development
of highly sensitive label-free electrochemical immunosensor for the detection of Immunoglobulin
A using SWV.
Results:
Despite the simple fabrication strategies employed, the fabricated sensor demonstrated a
low limit of detection of 50 fg mL-1 with an extensive linear range of detection from 50 fg mL-1 to
0.1 μg mL-1.
Conclusion:
Fabricated immunosensor represented high stability, repeatability, specificity and resistance
to most common interferences as well as great potential to analyse the real sample.
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Affiliation(s)
- Juthi Adhikari
- Faculty of Science, Biosensors and Biotechnology Laboratory, Chemical Science Programme, Universiti Brunei Darussalam. Jalan Tungku Link, Gadong, BE 1410, Brunei, Brunei Darussalam
| | - Mohammad Rizwan
- Faculty of Science, Biosensors and Biotechnology Laboratory, Chemical Science Programme, Universiti Brunei Darussalam. Jalan Tungku Link, Gadong, BE 1410, Brunei, Brunei Darussalam
| | - David Koh
- PAPRSB Institute of Health Sciences, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam
| | - Natasha Ann Keasberry
- Faculty of Science, Biosensors and Biotechnology Laboratory, Chemical Science Programme, Universiti Brunei Darussalam. Jalan Tungku Link, Gadong, BE 1410, Brunei, Brunei Darussalam
| | - Minhaz Uddin Ahmed
- Faculty of Science, Biosensors and Biotechnology Laboratory, Chemical Science Programme, Universiti Brunei Darussalam. Jalan Tungku Link, Gadong, BE 1410, Brunei, Brunei Darussalam
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37
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Ji J, Li Z, Hu C, Sha Y, Li S, Gao X, Zhou S, Qiu T, Liu C, Su X, Hou Y, Lin Z, Zhou S, Ling M, Liang C. Platinum Atomic Clusters Embedded in Defects of Anatase/Graphene for Efficient Electro- and Photocatalytic Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40204-40212. [PMID: 32794688 DOI: 10.1021/acsami.0c06931] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Electro- and photocatalytic hydrogen evolution reaction (e-HER and p-HER) are two promising strategies to produce green hydrogen fuel from water. High intrinsic activity, sufficient active sites, fast charge-transfer capacity, and good optoelectronic properties must be taken into consideration simultaneously in pursuit of an ideal bifunctional catalyst. Here, platinum atomic clusters embedded in defects of TiO2 nanocrystals/graphene nanosheets (Pt-T/G) are reported as a bifunctional catalyst for electro- and photocatalytic hydrogen evolution reaction (e-HER and p-HER). High activity is delivered due to the charge transfer from the other part of the catalyst to the active center (Pt2-O4-Tix), decreasing the activation energy of the rate-limiting step, which is revealed by synchrotron X-ray absorption spectroscopy, photoelectrochemical measurements, and simulated calculations. In regard to e-HER, it outperforms the commercial 20 wt % Pt/C catalyst by a factor of 17.5 on Pt mass basis, allowing for a 93% reduction in Pt loadings. In regard to p-HER, it achieves photocatalytic efficiency (686.8 μmol h-1) without any attenuation in 9 h.
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Affiliation(s)
- Jiapeng Ji
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zeheng Li
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chenchen Hu
- Ministry Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
| | - Ying Sha
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Siyuan Li
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xuehui Gao
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Shiyu Zhou
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Tong Qiu
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chenyu Liu
- College of Light Industry and Chemical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Xintai Su
- Ministry Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
| | - Yang Hou
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhan Lin
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
- College of Light Industry and Chemical Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Shaodong Zhou
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Min Ling
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
| | - Chengdu Liang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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38
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Ge C, Ramachandran R, Wang F. CeO 2-Based Two-Dimensional Layered Nanocomposites Derived from a Metal-Organic Framework for Selective Electrochemical Dopamine Sensors. SENSORS (BASEL, SWITZERLAND) 2020; 20:E4880. [PMID: 32872309 PMCID: PMC7506630 DOI: 10.3390/s20174880] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 08/14/2020] [Accepted: 08/24/2020] [Indexed: 02/08/2023]
Abstract
In this work, we demonstrate the incorporation of two-dimensional (2D) layered materials into a metal-organic framework (MOF) derived from one-dimensional (1D) cerium oxide (CeO2) for the electrochemical detection of dopamine. Ce-MOF was employed as a sacrificial template for preparing CeO2 with 2D materials by the pyrolysis process. The influence of the pyrolysis temperature was studied to achieve a better crystal structure of CeO2. Siloxene improved the dopamine sensing performance of CeO2 compared with graphitic carbon nitride (g-C3N4) due to the basal plane surface oxygen and hydroxyl groups of 2D siloxene. Under optimal conditions, the fabricated CeO2/siloxene electrode exhibited a detection limit of 0.292 μM, with a linear range from 0.292 μM to 7.8 μM. This work provides a novel scheme for designing the CeO2 material with siloxene for excellent dopamine sensors, which could be extended towards other biosensing applications.
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Affiliation(s)
- Chengjie Ge
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China; (C.G.); (R.R.)
| | - Rajendran Ramachandran
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China; (C.G.); (R.R.)
- SUSTech Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Fei Wang
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China; (C.G.); (R.R.)
- Engineering Research Center of Integrated Circuits for Next-Generation Communications, Ministry of Education, Shenzhen 518055, China
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39
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Cumba LR, Camisasca A, Giordani S, Forster RJ. Electrochemical Properties of Screen-Printed Carbon Nano-Onion Electrodes. Molecules 2020; 25:molecules25173884. [PMID: 32858929 PMCID: PMC7503887 DOI: 10.3390/molecules25173884] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 12/11/2022] Open
Abstract
The properties of carbon nano-onions (CNOs) make them attractive electrode materials/additives for the development of low-cost, simple to use and highly sensitive Screen Printed Electrodes (SPEs). Here, we report the development of the first CNO-based ink for the fabrication of low-cost and disposable electrodes, leading to high-performance sensors. Achieving a true dispersion of CNOs is intrinsically challenging and a key aspect of the ink formulation. The screen-printing ink formulation is achieved by carefully selecting and optimising the conductive materials (graphite (GRT) and CNOs), the polymer binder, the organic solvent and the plasticiser. Our CNO/GRT-based screen-printed electrodes consist of an interconnected network of conducting carbon particles with a uniform distribution. Electrochemical studies show a heterogeneous electron transfer rate constant of 1.3 ± 0.7 × 10-3 cm·s-1 and a higher current density than the ferrocene/ferrocenium coupled to a commercial graphite SPEs. In addition, the CNO/GRT SPE can detect dopamine in the concentration range of 10.0-99.9 µM with a limit of detection of 0.92 µM (N = 3). They exhibit a higher analytical sensitivity than the commercial graphite-based SPE, with a 4-fold improvement observed. These results open up the possibility of using high-performing CNO-based SPEs for electrochemical applications including sensors, battery electrodes and electrocatalysis.
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Affiliation(s)
- Loanda R. Cumba
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland; (A.C.); (R.J.F.)
- Correspondence: (L.R.C.); (S.G.)
| | - Adalberto Camisasca
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland; (A.C.); (R.J.F.)
| | - Silvia Giordani
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland; (A.C.); (R.J.F.)
- Correspondence: (L.R.C.); (S.G.)
| | - Robert J. Forster
- School of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland; (A.C.); (R.J.F.)
- FutureNeuro SFI Research Centre, Dublin, Ireland
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40
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Xiao S, Zhou C, Ye X, Lian Z, Zhang N, Yang J, Chen W, Li H. Solid-Phase Microwave Reduction of WO 3 by GO for Enhanced Synergistic Photo-Fenton Catalytic Degradation of Bisphenol A. ACS APPLIED MATERIALS & INTERFACES 2020; 12:32604-32614. [PMID: 32594735 DOI: 10.1021/acsami.0c06373] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The synergistic photocatalytic Fenton reaction is a powerful advanced oxidation technique for the degradation of persistent organic pollutants. However, microwave-induced thermal effects on the formation of novel structures facilitating the photocatalytic degradation have been rarely reported. Herein, a two-step microwave thermal strategy was developed to synthesize a new hybrid catalyst comprising defective WO3-x nanowires coupled with reduced graphene oxides (rGOs). Conventionally, microwave methods could induce superhot spots on the GO surface, resulting in the site-specific crystallization and oriented growth of WO3. However, in the solid phase, localized microwave thermal effects could reduce the interfacial area between WO3 and rGO and enhance the bonding between them. As for the unique structure and surface properties, the synthesized catalyst enhanced the light absorption, promoted the interfacial charge separation, and increased the carrier density in the photocatalytic processes. In addition, surface formation of W4+ provided a new pathway for Fe3+/Fe2+ cycling which linked the photocatalytic reaction and the Fenton process. The optimized catalyst exhibited a remarkable performance in the degradation of bisphenol A with a ∼83% removal yield via a photo-Fenton route. These microwave-induced functionalities of materials for synergistic reactions could also give a new avenue to other photoelectrocatalytic fields and solar cells.
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Affiliation(s)
- Shuning Xiao
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Chen Zhou
- Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Xingyu Ye
- Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
| | - Zichao Lian
- College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ningyu Zhang
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Junhe Yang
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Wei Chen
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
| | - Hexing Li
- Key Laboratory of Resource Chemistry of Ministry of Education, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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Kamal Eddin FB, Wing Fen Y. Recent Advances in Electrochemical and Optical Sensing of Dopamine. SENSORS (BASEL, SWITZERLAND) 2020; 20:E1039. [PMID: 32075167 PMCID: PMC7071053 DOI: 10.3390/s20041039] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/13/2019] [Accepted: 12/13/2019] [Indexed: 12/13/2022]
Abstract
Nowadays, several neurological disorders and neurocrine tumours are associated with dopamine (DA) concentrations in various biological fluids. Highly accurate and ultrasensitive detection of DA levels in different biological samples in real-time can change and improve the quality of a patient's life in addition to reducing the treatment cost. Therefore, the design and development of diagnostic tool for in vivo and in vitro monitoring of DA is of considerable clinical and pharmacological importance. In recent decades, a large number of techniques have been established for DA detection, including chromatography coupled to mass spectrometry, spectroscopic approaches, and electrochemical (EC) methods. These methods are effective, but most of them still have some drawbacks such as consuming time, effort, and money. Added to that, sometimes they need complex procedures to obtain good sensitivity and suffer from low selectivity due to interference from other biological species such as uric acid (UA) and ascorbic acid (AA). Advanced materials can offer remarkable opportunities to overcome drawbacks in conventional DA sensors. This review aims to explain challenges related to DA detection using different techniques, and to summarize and highlight recent advancements in materials used and approaches applied for several sensor surface modification for the monitoring of DA. Also, it focuses on the analytical features of the EC and optical-based sensing techniques available.
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Affiliation(s)
- Faten Bashar Kamal Eddin
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
| | - Yap Wing Fen
- Department of Physics, Faculty of Science, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia;
- Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang 43400 UPM, Selangor, Malaysia
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Investigation of Cytotoxicity, Apoptosis, and Oxidative Stress Response of Fe 3O 4-RGO Nanocomposites in Human Liver HepG2 cells. MATERIALS 2020; 13:ma13030660. [PMID: 32024252 PMCID: PMC7040707 DOI: 10.3390/ma13030660] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 01/29/2020] [Accepted: 01/31/2020] [Indexed: 12/16/2022]
Abstract
Iron oxide–reduced graphene oxide (Fe3O4-RGO) nanocomposites have attracted enormous interest in the biomedical field. However, studies on biological response of Fe3O4-RGO nanocomposites at the cellular and molecular level are scarce. This study was designed to synthesize, characterize, and explore the cytotoxicity of Fe3O4-RGO nanocomposites in human liver (HepG2) cells. Potential mechanisms of cytotoxicity of Fe3O4-RGO nanocomposites were further explored through oxidative stress. Prepared samples were characterized by UV-visible spectrophotometer, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and energy dispersive spectroscopy. The results demonstrated that RGO induce dose-dependent cytotoxicity in HepG2 cells. However, Fe3O4-RGO nanocomposites were not toxic. We further noted that RGO induce apoptosis in HepG2 cells, as evidenced by mitochondrial membrane potential loss, higher caspase-3 enzyme activity, and cell cycle arrest. On the other hand, Fe3O4-RGO nanocomposites did not alter these apoptotic parameters. Moreover, we observed that RGO increases intracellular reactive oxygen species and hydrogen peroxide while decrease antioxidant glutathione. Again, Fe3O4-RGO nanocomposites did not exert oxidative stress. Altogether, we found that RGO significantly induced cytotoxicity, apoptosis and oxidative stress. However, Fe3O4-RGO nanocomposites showed good biocompatibility to HepG2 cells. This study warrants further research to investigate the biological response of Fe3O4-RGO nanocomposites at the gene and molecular level.
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A mesoporous silver-doped TiO2-SnO2 nanocomposite on g-C3N4 nanosheets and decorated with a hierarchical core−shell metal-organic framework for simultaneous voltammetric determination of ascorbic acid, dopamine and uric acid. Mikrochim Acta 2020; 187:82. [DOI: 10.1007/s00604-019-4045-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 11/20/2019] [Indexed: 01/01/2023]
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44
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Ren B, Wang Y, Ou JZ. Engineering two-dimensional metal oxides via surface functionalization for biological applications. J Mater Chem B 2020; 8:1108-1127. [DOI: 10.1039/c9tb02423a] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Schematic illustration of 2D MO nanosheets for applications in biosystems.
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Affiliation(s)
- Baiyu Ren
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
- China
- School of Resources and Environmental Engineering
| | - Yichao Wang
- School of Engineering
- RMIT University
- Melbourne
- Australia
| | - Jian Zhen Ou
- School of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
- China
- School of Engineering
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45
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Wang S, Chen G, Niu S, Chen K, Gan T, Wang Z, Wang H, Du P, Leung CW, Qu S. Magnetic-Assisted Transparent and Flexible Percolative Composite for Highly Sensitive Piezoresistive Sensor via Hot Embossing Technology. ACS APPLIED MATERIALS & INTERFACES 2019; 11:48331-48340. [PMID: 31774259 DOI: 10.1021/acsami.9b16215] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A highly transparent and flexible percolative composite with magnetic reduced graphene oxide@nickel nanowire (mGN) fillers in EcoFlex matrix is proposed as a sensing layer to fabricate high-performance flexible piezoresistive sensors. Large excluded volume and alignment of mGN fillers contribute to low percolation threshold (0.27 vol %) of mGN-EcoFlex composites, leading to high electrical conductivity of 0.003 S m-1, optical transmittance of 71.8%, and low Young's modulus of 122.8 kPa. Large-scale microdome templates for sensors are prepared by hot embossing technology cost-effectively and COMSOL Multiphysics is utilized to optimize the sensor performances. Piezoresistive sensors fabricated experimentally show superior average sensitivity of 1302.1 kPa-1 with a low device-to-device variation of 3.74%, which provides a new way to achieve transparent, highly sensitive, and large-scale electronic skin.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Chi Wah Leung
- Department of Applied Physics , The Hong Kong Polytechnic University , Hung Hom , Hong Kong 999077 , China
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46
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Keerthi M, Boopathy G, Chen SM, Chen TW, Lou BS. A core-shell molybdenum nanoparticles entrapped f-MWCNTs hybrid nanostructured material based non-enzymatic biosensor for electrochemical detection of dopamine neurotransmitter in biological samples. Sci Rep 2019; 9:13075. [PMID: 31506456 PMCID: PMC6736870 DOI: 10.1038/s41598-019-48999-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 08/01/2019] [Indexed: 11/09/2022] Open
Abstract
Dopamine (DA) is a critical neurotransmitter and has been known to be liable for several neurological diseases. Hence, its sensitive and selective detection is essential for the early diagnosis of diseases related to abnormal levels of DA. In this study, we reported novel molybdenum nanoparticles self-supported functionalized multiwalled carbon nanotubes (Mo NPs@f-MWCNTs) based core-shell hybrid nanomaterial with an average diameter of 40–45 nm was found to be the best for electrochemical DA detection. The Mo NPs@f-MWCNTs hybrid material possesses tremendous superiority in the DA sensing is mainly due to the large surface area and numerous electroactive sites. The morphological and structural characteristics of the as-synthesized hybrid nanomaterial were examined by XRD, Raman, FE-SEM, HR-TEM, EDX. The electrochemical characteristics and catalytic behavior of the as-prepared Mo NPs@f-MWCNTs modified screen-printed carbon electrode for the determination of DA were systematically investigated via electrochemical impedance spectroscopy, cyclic voltammetry, and amperometry. The results demonstrate that the developed DA biosensor exhibit a low detection limit of 1.26 nM, excellent linear response of 0.01 µM to 1609 µM with good sensitivity of 4.925 µA µM−1 cm−2. We proposed outstanding appreciable stability sensor was expressed to the real-time detection of DA in the real sample analysis of rat brain, human blood serum, and DA hydrochloride injection.
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Affiliation(s)
- Murugan Keerthi
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan
| | - Gopal Boopathy
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan.
| | - Tse-Wei Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan
| | - Bih-Show Lou
- Chemistry Division, Center for General Education, Chang Gung University, Taoyuan, 333, Taiwan. .,Department of Nuclear Medicine and Molecular Imaging Center, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan.
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Daemi S, Moalem-Banhangi M, Ghasemi S, Ashkarran AA. An efficient platform for the electrooxidation of formaldehyde based on amorphous NiWO4 nanoparticles modified electrode for fuel cells. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113270] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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48
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Azad R, Bezaatpour A, Amiri M, Eskandari H, Nouhi S, Taffa DH, Wark M, Boukherroub R, Szunerits S. Excellent photocatalytic reduction of nitroarenes to aminoarenes by BiVO4
nanoparticles grafted on reduced graphene oxide (rGO/BiVO4
). Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5059] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Roya Azad
- Department of Chemistry, Faculty of Basic Science; University of Mohaghegh Ardabili 179; Ardabil Iran
| | - Abolfazl Bezaatpour
- Department of Chemistry, Faculty of Basic Science; University of Mohaghegh Ardabili 179; Ardabil Iran
| | - Mandana Amiri
- Department of Chemistry, Faculty of Basic Science; University of Mohaghegh Ardabili 179; Ardabil Iran
| | - Habibollah Eskandari
- Department of Chemistry, Faculty of Basic Science; University of Mohaghegh Ardabili 179; Ardabil Iran
| | - Sima Nouhi
- Institute of Chemistry, Chemical Technology 1; Carl von Ossietzky University Oldenburg; Carl-von-Ossietzky-Str. 9-11 26129 Oldenburg Germany
| | - Dereje H. Taffa
- Institute of Chemistry, Chemical Technology 1; Carl von Ossietzky University Oldenburg; Carl-von-Ossietzky-Str. 9-11 26129 Oldenburg Germany
| | - Michael Wark
- Institute of Chemistry, Chemical Technology 1; Carl von Ossietzky University Oldenburg; Carl-von-Ossietzky-Str. 9-11 26129 Oldenburg Germany
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, ISEN; Univ. Valenciennes; UMR 8520 - IEMN F-59000 Lille France
| | - Sabine Szunerits
- Univ. Lille, CNRS, Centrale Lille, ISEN; Univ. Valenciennes; UMR 8520 - IEMN F-59000 Lille France
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Matt SB, Manjunatha S, Manjunatha S, Sidlingappa DM, Sidlingappa M. Synthesis of Cerium‐Doped Zirconia Nanoparticles for the Electrochemical Detection of Dopamine by Modified Carbon Paste Electrode. ChemistrySelect 2019. [DOI: 10.1002/slct.201900642] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - S. Manjunatha
- Department of ChemistryB M S College for Women BugalRock Road Bangalore India
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50
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Qu J, He N, Patil SV, Wang Y, Banerjee D, Gao W. Screen Printing of Graphene Oxide Patterns onto Viscose Nonwovens with Tunable Penetration Depth and Electrical Conductivity. ACS APPLIED MATERIALS & INTERFACES 2019; 11:14944-14951. [PMID: 30920793 DOI: 10.1021/acsami.9b00715] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Graphene-based e-textiles have attracted great interest because of their promising applications in sensing, protection, and wearable electronics. Here, we report a scalable screen-printing process along with continuous pad-dry-cure treatment for the creation of durable graphene oxide (GO) patterns onto viscose nonwoven fabrics at controllable penetration depth. All the printed nonwovens show lower sheet resistances (1.2-6.8 kΩ/sq) at a comparable loading, as those reported in the literature, and good washfastness, which is attributed to the chemical cross-linking applied between reduced GO (rGO) flakes and viscose fibers. This is the first demonstration of tunable penetration depth of GO in textile matrices, wherein GO is also simultaneously converted to rGO and cross-linked with viscose fibers in our processes. We have further demonstrated the potential applications of these nonwoven fabrics as physical sensors for compression and bending.
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Affiliation(s)
- Jiangang Qu
- School of Textile and Clothing , Nantong University , Nantong , Jiangsu 226019 , China
- Textile Engineering, Chemistry, and Science Department , North Carolina State University , Raleigh , North Carolina 27606 , United States
| | - Nanfei He
- Textile Engineering, Chemistry, and Science Department , North Carolina State University , Raleigh , North Carolina 27606 , United States
| | - Shradha V Patil
- Textile Engineering, Chemistry, and Science Department , North Carolina State University , Raleigh , North Carolina 27606 , United States
| | - Yanan Wang
- Textile Engineering, Chemistry, and Science Department , North Carolina State University , Raleigh , North Carolina 27606 , United States
| | - Debjyoti Banerjee
- Textile Engineering, Chemistry, and Science Department , North Carolina State University , Raleigh , North Carolina 27606 , United States
| | - Wei Gao
- Textile Engineering, Chemistry, and Science Department , North Carolina State University , Raleigh , North Carolina 27606 , United States
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