Self-assembled dopamine nanolayers wrapped carbon nanotubes as carbon-carbon bi-functional nanocatalyst for highly efficient oxygen reduction reaction and antiviral drug monitoring |
| |
| Affiliation: | 1. Mechanical Design and Materials Department, Faculty of Energy Engineering, Aswan University, P.O. Box 81521, Aswan, Egypt;2. Institute of Chemical Sciences, Bhauddin Zakriya University, Multan Pakistan;3. Chemical Engineering Department, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia;4. Deanship of Graduate Studies, Saudi Electronic University, Riyadh 11673, Saudi Arabia;5. Department of Applied Medical Science, Riyadh Community College, King Saud University, Riyadh, 11437, Saudi Arabia;6. Biomedical Engineering Department, Faculty of Engineering, Helwan University, P. O. Box 11792, Helwan, Egypt;7. Department of Mechanical Engineering, College of Engineering, University of Sharjah, P.O. Box 27272, Sharjah, United Arab Emirates;1. State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), Harbin Institute of Technology (HIT), Harbin 150090, PR China;2. Department of Catalysis Science and Engineering, School of Chemical Engineering and Technology, Harbin Institute of Technology (HIT), Harbin 150001, PR China;1. School of Engineering, Taylor''s University, Taylor''s Lakeside Campus, No. 1, Jalan Taylor''s, 47500 Subang Jaya, Selangor, Malaysia;2. Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;3. Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia;1. Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), ECPM, UMR 7515 du CNRS, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France;2. Ha-Noi University of Mining and Geology, Dong Ngac, Tu Liem, Ha Noi, Viet Nam;3. Laboratoire d’Electrochimie et de Chimie Physique du Corps Solide, Institut de Chimie de Strasbourg (ICS), UMR 7177 du CNRS, Université de Strasbourg, 4, rue Blaise Pascal, CS 90032, F-67081 Strasbourg Cedex, France;4. Unité de Catalyse et Chimie du Solide (UCCS), UMR 8181 du CNRS-Université de Lille-1, Bâtiment C3, Université Lille 1, 59655 Villeneuve d’Ascq Cedex, France;1. State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, PR China;2. Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan;3. Department of Physics, Bahauddin Zakariya University, Multan 60800, Pakistan;4. Énergie Matériaux Télécommunications Research Centre, Institut National de la Recherche Scientifique, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2, Canada |
| |
| Abstract: | Oxygen reduction reaction (ORR) catalysts are the heart of eco-friendly energy resources particularly low temperature fuel cells. Although valuable efforts have been devoted to synthesize high performance catalysts for ORR, considerable challenges are extremely desirable in the development of energy technologies. Herein, we report a simple self-polymerization method to build a thin film of dopamine along the tubular nanostructures of multi-walled carbon nanotubes (CNT) in a weak alkaline solution. The dopamine@CNT hybrid (denoted as DA@CNT) reveals an enhanced electrocatalytic activity towards ORR with highly positive onset potential and cathodic current as a result of their outstanding features of longitudinal mesoporous structure, high surface area, and ornamentation of DA layers with nitrogen moieties, which enable fast electron transport and fully exposed electroactive sites. Impressively, the as-obtained hybrid afford remarkable electrochemical durability for prolonged test time of 60,000 s compared to benchmark Pt/C (20 wt%) catalyst. Furthermore, the developed DA@CNT electrode was successfully applied to access the quality of antiviral drug named Valacyclovir (VCR). The DA@CNT electrode shows enhanced sensing performance in terms of large linear range (3–75 nM), low limit of detection (2.55 nM) than CNT based electrode, indicating the effectiveness of the DA coating. Interestingly, the synergetic effect of nanostructured DA and CNT can significantly boost the electronic configuration and exposure level of active species for ORR and biomolecule recognition. Therefore, the existing carbon-based porous electrocatalyst may find numerous translational applications as attractive alternative to noble metals in polymer electrolyte membrane fuel cells and quality control assessment of pharmaceutical and therapeutic drugs. |
| |
| Keywords: | Dopamine Carbon nanotubes Oxygen reduction reaction Antiviral drug Nanohybrid |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
