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| 尖晶石型NiCr2O4的燃烧法合成及表征 | |
| 引用本文： | 耿庆芬,赵 鑫,高祥虎,杨生荣,刘 刚. 尖晶石型NiCr2O4的燃烧法合成及表征[J]. 无机化学学报, 2012, 28(9): 1979-1984 |
| 作者姓名： | 耿庆芬 赵 鑫 高祥虎 杨生荣 刘 刚 |
| 作者单位： | 1. 中科院兰州化学物理研究所固体润滑国家重点实验室,兰州 730000;中国科学院研究生院,北京 100049 2. 中科院兰州化学物理研究所环境材料与生态化学发展中心,兰州,730000 3. 中科院兰州化学物理研究所固体润滑国家重点实验室,兰州,730000 |
| 基金项目： | 中科院“西部之光”人才培养计划;中科院太阳能行动计划(1731012394);国家自然科学基金(No.51003111)资助项目 |
| 摘 要： | 通过溶胶-凝胶燃烧法制备了具有立方相的尖晶石型NiCr2O4颜料,并采用TG/DSC、XRD、FTIR和SEM等手段对其进行表征和研究。结果表明:将燃烧后的粉末于900℃下煅烧2 h可以得到单一相的NiCr2O4,温度达不到900℃时所得粉末(包括燃烧后粉末和500和700℃煅烧得到的粉末)为NiO和Cr2O3组成的混合物。利用紫外/可见/近红外分光光度计仔细研究了燃烧后粉末和煅烧后粉末的颜色参数。尽管具有相同的成分,500和700℃下煅烧得到的粉末与燃烧后粉末却具有明显不同的颜色,这可从一氧化镍为非整比化合物的角度加以解释。此外,900和1 000℃下煅烧得到的NiCr2O4粉末呈现出随温度变化的绿色。 |
| 关 键 词： | 燃烧合成法 尖晶石型NiCr2O4 颜色 晶体生长 |
Combustion Synthesis and Characterization of Spinel NiCr2O4 |
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| GENG Qing-Fen,ZHAO Xin,GAO Xiang-Hu,YANG Sheng-Rong and LIU Gang. Combustion Synthesis and Characterization of Spinel NiCr2O4[J]. Chinese Journal of Inorganic Chemistry, 2012, 28(9): 1979-1984 | |
| Authors: | GENG Qing-Fen ZHAO Xin GAO Xiang-Hu YANG Sheng-Rong LIU Gang |
| Affiliation: | State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Graduate University of Chinese Academy of Sciences, Beijing 100049, China,Research & Development Center for Eco-material and Eco-chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China,Research & Development Center for Eco-material and Eco-chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China,State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China and Research & Development Center for Eco-material and Eco-chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
| Abstract: | Cubic spinel NiCr2O4,as a pigment,was synthesized via a sol-gel combustion method and characterized using TG/DSC,XRD,FTIR and SEM techniques.The results reveal that a single-phase NiCr2O4 with the cubic structure is obtained after heat treatment of the as-burnt powder at 900 ℃ for 2 h.The powders obtained below 900 ℃ appear as a mixture of NiO and Cr2O3.The color parameters for the as-burnt powder and the powder calcined at various temperatures were studied using PerkinElmer Lambda 950 UV-Vis-NIR spectrometer.Although having the same compositions,the 500 and 700 ℃ calcined powders show a different color(black) from the as-burnt powder(black green).This phenomenon may be interpreted in terms of non-stoichiometry in NiO crystals.Moreover,the as-prepared spinel NiCr2O4 powders calcined at 900 and 1 000 ℃ show green color which changes with the calcination temperature. |
| Keywords: | combustion synthesis spinel-type NiCr2O4 color crystal growth |
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