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The role of annealing temperature in enhancing the photocatalytic activity of nitrogen-doped hexaniobate
Liu, Huayun; Wang, Huanhuan; Li, Shouzhu
2014
发表期刊Materials Science in Semiconductor Processing
ISSN13698001
卷号25期号:9页码:294-300
摘要By controlling the annealing temperature, we obtained the optimum crystalline structure for nitrogen-doped hexaniobate (K4Nb6O17) for efficient decomposition of rhodamine B via visible-light photocatalysis. The annealing temperature for hexaniobate was closely related to the crystallinity and charge recombination rate. The rate of charge recombination could be controlled by varying the annealing temperature. The optimum photocatalytic activity of hexaniobate with or without nitrogen doping could be obtained at an annealing temperature at 400 degrees C. The long lifetime of photogenerated carriers was evident from measurements of hydroxyl radical concentrations resulting from catalysis by nitrogen-doped hexaniobate. The results indicate that improvements in photocatalytic activity of the annealed materials were mainly attributed to the decrease in recombination rate and to the high rate of separation of photogenerated carriers.
关键词Annealing Temperature Charge Recombination Crystallinity Nitrogen-doped Hexaniobate Photocatalytic Activity
DOI10.1016/j.mssp.2014.01.015
收录类别SCI
WOS记录号WOS:000338820500041
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/3747
专题环境科学与技术研究室
作者单位Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Ecomat & Sustainable Technol, Urumqi 830011, Xinjiang, Peoples R China;Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Xinjiang, Peoples R China
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Liu, Huayun,Wang, Huanhuan,Li, Shouzhu. The role of annealing temperature in enhancing the photocatalytic activity of nitrogen-doped hexaniobate[J]. Materials Science in Semiconductor Processing,2014,25(9):294-300.
APA Liu, Huayun,Wang, Huanhuan,&Li, Shouzhu.(2014).The role of annealing temperature in enhancing the photocatalytic activity of nitrogen-doped hexaniobate.Materials Science in Semiconductor Processing,25(9),294-300.
MLA Liu, Huayun,et al."The role of annealing temperature in enhancing the photocatalytic activity of nitrogen-doped hexaniobate".Materials Science in Semiconductor Processing 25.9(2014):294-300.
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