Low-temperature solid state synthesis of Eu-doped Ca2SnO4 ceramics under CO-CO2 atmosphere |
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| Affiliation: | 1. Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education), Key Laboratory of Sustainable Resources Processing and Advanced Materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan 410081, China;2. Scientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region, Ministry of Agriculture, School of Horticulture Science, Shandong Agricultural University, Tai’an, Shandong 271018, China;1. Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran;2. Young Researchers and Elite Club, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran;3. Department of Chemistry, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran;1. Institute of Photovoltaics, Nanchang University, Nanchang 330031, PR China;2. Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, Hubei Province, South-Central University for Nationalities, Wuhan 430074, PR China;1. School of Science, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 200235, China;2. , School of Materials Science and Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 200235, China |
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| Abstract: | High temperature solid state is reported the most common synthesis technique for Ca2SnO4 ceramics, nevertheless it requires high thermal treatment temperature and long synthesis time. Our previous studies indicated that Ca2SnO4 was much easier to form if SnO2 and CaCO3 were roasted under CO-CO2 atmosphere at relatively low temperatures. In this study, the reaction mechanism between SnO2 and CaCO3 under 15 vol% CO/(CO+CO2) atmosphere and air atmosphere were firstly investigated by using XRD, SEM, XPS, etc. In addition, the Eu-doped Ca2SnO4 was synthesized by low-temperature solid state reaction under CO-CO2 atmosphere. The results indicated that the crystal structure and photoluminescence properties of the products were similar to those of samples synthesized under air atmosphere, whereas the synthetic temperature was reduced by more than 300 °C. |
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| Keywords: | Phase transformation SnO Solid state method |
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