Synthesis of Pd/α-Fe2O3 nanocomposites for catalytic CO oxidation |
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| Authors: | XC Jiang AB Yu |
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| Affiliation: | 1. School of Materials Science & Engineering, University of New South Wales, Sydney, NSW 2052, Australia;2. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, PR China;1. Tangshan Workers Hospital affiliated to Hebei Medical University, Tangshan 063000, China;2. Anatomy Teaching and Research Section of Hebei Union University, Tangshan 063009, China;1. Instituto de Ciencia y Tecnología de Materiales, La Habana, Cuba;2. Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Legaria, Instituto Politécnico Nacional, Mexico;3. Instituto de Investigaciones en Materiales, UNAM, México, D.F., Mexico;1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. School of Materials Science and Engineering, Pan Zhihua University, Pan Zhihua 617000, China;1. Department of Chemistry, Sethu Institute of Technology, Madurai 626115, Tamil Nadu, India;2. Department of Chemistry, College of Science, Yeungnam University, Gyeongbuk 712749, Republic of Korea;3. P.G. & Research Department of Chemistry, Thiagarajar College, Madurai 625009, Tamil Nadu, India;4. P.G. & Research Department of Chemistry, C.P.A. College, Bodinayakanur 626513, Tamil Nadu, India;1. School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran;2. Nuclear Science and Technology Research Institute, End of North Karegar Ave., Tehran, Iran |
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| Abstract: | Iron oxide and metal doped iron oxide nanocomposites have found attractive and versatile applications in many research areas such as catalysts, sensors, and biomedicine. This work reports a surfactant-free hydrolysis approach for the synthesis of hematite (α-Fe2O3) and Pd doped α-Fe2O3 nanoparticles with low-temperature catalytic activity. By this method, iron oxide rod-like nanoparticles were achieved by hydrolysis of ferric chloride salt with dilute HCl at a temperature of 100 °C. The Pd/iron oxide nanocomposites were obtained by adding citric acid into a mixture of iron oxide nanoparticles and palladium precursor (Pd(CH3CN)2Cl2) under a reflux heating at 90 °C for 2 h. This method is featured as no use of any surfactants and templates, and no requirement of high-temperature thermal decomposition that are usually required for shape/size control in polar or nonpolar solvents. More importantly, it was found that the Pd/α-Fe2O3 nanocomposites exhibited high low-temperature catalytic activity in carbon monoxide (CO) oxidation. |
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