Metal nanoparticles supported on polyacrylamide water beads as catalyst for efficient generation of H2 from NaBH4 methanolysis |
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| Affiliation: | 1. Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia;2. Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia;3. Department of Chemistry, Abbottabad University of Science and Technology, Abbottabad, Khyber Pakhtunkhwa, Pakistan;4. School of Pharmacy and State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science & Technology Avenida Wai Long, Taipa, 999078, Macau;1. Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana Champaign, Urbana, IL, 61801, United States;2. Department of Mechanical Engineering, Jordan University of Science and Technology, P.O.Box 3030, Irbid, 22110, Jordan;1. School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, PR China;2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China;3. Tianjin Engineering Research Center of Functional Fine Chemicals, Tianjin, PR China;4. Department of Chemical Engineering, Renai College of Tianjin University, Tianjin, 301636, PR China;1. National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy, GRINM Group Co., Ltd., Beijing, 100088, China;2. GRIMAT Engineering Institute Co., Ltd., Beijing, 101407, China;1. Institut Européen des Membranes, IEM – UMR 5635, Univ Montpellier, CNRS, ENSCM, Montpellier, France;2. Institut Charles Gerhardt Montpellier, ICGM – UMR 5253, Univ Montpellier, CNRS, ENSCM, Montpellier, France |
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| Abstract: | Water beads made from polyacrylamide polymer p-(AAm) were decorated with high efficient metal nanoparticles by inexpensive, fast, simple, and environmental friendly method. These water beads balls were kept in the metal salt solutions for 4 h; to adsorb the metals ions from these aqueous solutions. The metal ions decorated on the p-(AAm) water beads were converted to metal nanoparticles by its reduction with aqueous solution of NaBH4. The prepared materials p-(AAm) loaded with MNPs (M@p-(AAm)) were characterized by ATR-FTIR, XRD, XPS, FESEM, and EDS which show the successful preparation of MNPs over the surface and within p-(AAm). Afterwards the M@p-(AAm) were investigated as a catalyst for the generation of hydrogen from the methanolysis of NaBH4. The Ag@p-(AAm) show good catalytic activity for NaBH4 methanolysis reaction as compared to the other loaded MNPs. In addition, different parameters which effecting H2 generation were also investigated such as; MNPs types, catalyst amount and temperature of the reaction. Low activation energy (Ea) of 21.37 ± 0.67 kJ mol?1, was calculated for NaBH4 methanolysis reaction at temperature ranging from 5.0 °C to 35 °C. Moreover, the catalyst reusability was also studied and found no decrease in percent conversion, however percent efficiency was decreases about 37% after completion of four cycles. |
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| Keywords: | Water beads Polyacrylamide Polymer Metal nanoparticles |
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