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Noor N, Baker T, Lee H, Evans E, Angizi S, Henderson JD, Rakhsha A, Higgins D. Redox-Active Phenanthrenequinone Molecules and Nitrogen-Doped Reduced Graphene Oxide as Active Material Composites for Supercapacitor Applications. ACS OMEGA 2024; 9:10080-10089. [PMID: 38463326 PMCID: PMC10918682 DOI: 10.1021/acsomega.3c04836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 01/24/2024] [Accepted: 02/05/2024] [Indexed: 03/12/2024]
Abstract
Carbon-based supercapacitor electrodes are generally restricted in energy density, as they rely exclusively on electric double-layer capacitance (EDLC). The introduction of redox-active organic molecules to obtain pseudocapacitance is a promising route to develop electrode materials with improved energy densities. In this work, we develop a porous nitrogen-doped reduced graphene oxide and 9,10-phenanthrenequinone composite (N-HtrGO/PQ) via a facile one-step physical adsorption method. The electrochemical evaluation of N-HtrGO/PQ using cyclic voltammetry showed a high capacitance of 605 F g-1 in 1 M H2SO4 when the composite consisted of 30% 9,10-phenanthrenequinone and 70% N-HtrGO. The measured capacitance significantly exceeded pure N-HtrGO without the addition of redox-active molecules (257 F g-1). In addition to promising capacitance, the N-HtrGO/30PQ composite showed a capacitance retention of 94.9% following 20,000 charge/discharge cycles. Based on Fourier transform infrared spectroscopy, we postulate that the strong π-π interaction between PQ molecules and the N-HtrGO substrate enhances the specific capacitance of the composite by shortening pathways for electron transfer while improving structural stability.
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Affiliation(s)
- Navid Noor
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Thomas Baker
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Hyejin Lee
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
- School
of Chemical and Biological Engineering, Institute of Chemical Process
(ICP), and Institute of Engineering Research, Seoul National University, Seoul 08826, Republic of Korea
| | - Elliot Evans
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Shayan Angizi
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | | | - Amirhossein Rakhsha
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
| | - Drew Higgins
- Department
of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L7, Canada
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Abel S, Jule LT, Gudata L, Nagaraj N, Shanmugam R, Dwarampudi LP, Stalin B, Ramaswamy K. Preparation and characterization analysis of biofuel derived through seed extracts of Ricinus communis (castor oil plant). Sci Rep 2022; 12:11021. [PMID: 35773362 PMCID: PMC9246933 DOI: 10.1038/s41598-022-14403-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 06/06/2022] [Indexed: 11/10/2022] Open
Abstract
The current study assesses the prospect of using R. Communis seed oil as a substitute fuel for diesel engines. Biodiesel is prepared from the R. Communis plant seed oil by a single-step base catalytic transesterification procedure. The investigation deals with the Physico-chemical characteristics of R. Communis biodiesel and has been associated with the base diesel. It has been perceived that the characteristics of biodiesel are well-matched with the base diesel under the ASTM D6751 limits correspondingly. R. Communis biodiesel is blended in different proportions with base diesel such as D10, D20, D30, D40, D50 and D100 and is tested in a Kirloskar TV1 single-cylinder, 4 blows DI engine under altered loading conditions. Outcomes demonstrate that BTE and BSFC for D10 as well as D20 are similar to base diesel. BSFC indicates that the precise BSFC of base diesel, D10, D20, D30, D40 and D50 was 0.87, 1.70, 2.60, 3.0, 3.4, and 3.5 kg/kW-hr, respectively. The extreme BTE at full load condition for base diesel, D10, D20, D30, D40, D50 and D100 are 28.2%, 28.1%, 27.9%, 25.5%, 24.1%, and 23.6% , respectively. In the case of engine emissions, R. Communis biodiesel blends provided an average decrease in hydrocarbon (HC), Carbon-monoxide (CO) and carbon dioxide (CO2) associated with base diesel. Nevertheless, R. Communis biodiesel blends discharged high stages of nitrogen oxide (NOx) compares to base diesel. Base diesel, D10, D20, D30, D40, D50, and D100 had UBHC emissions of 45 ppm, 40 ppm, 44 ppm, 46 ppm, 41 ppm, and 43 ppm, respectively. The reduction in CO emissions for D10, D20, D30, D40, D50 and D100 are 0.13%, 0.14%, 0.17%, 0.18% and 0.21% respectively. The dissimilarity in NOx attentiveness within brake powers for D10, D20, D30, D40, and D50 and base diesel are 50-ppm, 100 ppm, 150 ppm, 250 ppm, 350 ppm, and 500 ppm, respectively. The dissimilarity of CO2 emanation with reverence to break powers for the base-diesel, D10, D20, D30, D40, D50, and D100 are 4.8%, 4.9%, 4.8%, 4.56%, 4.9% and 5.1%, respectively. The present research provides a way for renewable petrol blends to substitute diesel for powering diesel engines in that way dropping the reliance on fossil fuels.
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Affiliation(s)
- Saka Abel
- Department of Physics, College of Natural and Computational Science, Dambi Dollo University, Dembi Dolo, Ethiopia
| | - Leta Tesfaye Jule
- Department of Physics, College of Natural and Computational Science, Dambi Dollo University, Dembi Dolo, Ethiopia.,Centre for Excellence-Indigenous Knowledge, Innovative Technology Transfer and Entrepreneurship, Dambi Dollo University, Dembi Dolo, Ethiopia
| | - Lamessa Gudata
- Department of Physics, College of Natural and Computational Science, Dambi Dollo University, Dembi Dolo, Ethiopia
| | - Nagaprasad Nagaraj
- Department of Mechanical Engineering, ULTRA College of Engineering and Technology, Madurai, Tamil Nadu, 625 104, India
| | - R Shanmugam
- TIFAC, CORE-HD, Department of Pharmacognosy, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Nilgiris, Ooty, Tamil Nadu, India
| | - L Priyanka Dwarampudi
- Department of Pharmacognosy, JSS College of Pharmacy, JSS Academy of Higher Education and Research, Nilgiris, Ooty, Tamil Nadu, India
| | - B Stalin
- Department of Mechanical Engineering, Anna University, Regional Campus Madurai, Madurai, Tamil Nadu, 625 019, India
| | - Krishnaraj Ramaswamy
- Centre for Excellence-Indigenous Knowledge, Innovative Technology Transfer and Entrepreneurship, Dambi Dollo University, Dembi Dolo, Ethiopia. .,Department of Mechanical Engineering, Dambi Dollo University, Dembi Dolo, Ethiopia.
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Abou- Elyazed A, Hassan S, Ashry AG, Hegazy M. Facile, Efficient, and Cheap Electrode based on SnO 2/Activated Carbon Waste for Supercapacitor and Capacitive Deionization Applications. ACS OMEGA 2022; 7:19714-19720. [PMID: 35721912 PMCID: PMC9202029 DOI: 10.1021/acsomega.2c01458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
Activated carbon granules present in our household filters used in water purification are significant waste. Activated carbon waste (ACW) was ground to a fine powder, then impregnation of SnO2 on ACW was performed under mild conditions followed by calcination of SnO2-ACW at 700 °C for 2 h, producing a SnO2-ACW hybrid composite. This hybrid composite material was used in the preparation of electrodes for supercapacitor and capacitive deionization applications. The electrochemical performance of the electrodes was investigated by using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. Calcination and addition of SnO2 contributed to an obtained electrode with a high specific capacitance of 30.46 F g-1 in a solution of 1 M Na2SO4 compared to the original ACW (0.122 F g-1) and calcined-ACW (1.42 F g-1) at an actual current of 1 mA. This electrode was also investigated for water desalination through the capacitive deionization technique and exhibited an electrosorption capacity of 6.44 mg/g compared to the commercial AC (8.9 mg/g) so it is a highly promising and economic electrode.
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Affiliation(s)
- Ahmed
S. Abou- Elyazed
- Chemistry
Department, Faculty of Science, Menoufia
University, Shebin
El-Koom 32511, Egypt
- MIIT
Key Laboratory of Critical Materials Technology for New Energy Conversion
and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Sameh Hassan
- Physics
Department, Faculty of Science, Menoufia
University, Shebin El-Koom 32511, Egypt
| | - Asmaa G. Ashry
- Chemistry
Department, Faculty of Science, Menoufia
University, Shebin
El-Koom 32511, Egypt
| | - Mohammad Hegazy
- Chemistry
Department, Faculty of Science, Menoufia
University, Shebin
El-Koom 32511, Egypt
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