| 纳米YMn2O5半导体可见光催化剂 |
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| 引用本文： | 王仕发,杨华,县涛,魏智强,马金元,冯旺军.纳米YMn2O5半导体可见光催化剂[J].无机材料学报,2011(11):1164-1168. |
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| 作者姓名： | 王仕发 杨华 县涛 魏智强 马金元 冯旺军 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室;兰州理工大学理学院; |
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| 基金项目： | 国家自然科学基金(50962009); 教育部重点项目(209130); 甘肃省自然科学基金(1010RJZA041); 兰州理工大学优秀青年基金(Q200902)~~ |
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| 摘 要： | 采用改进的聚丙烯酰胺凝胶法合成了YMn2O5纳米颗粒.XRD分析结果表明,合成的纳米颗粒主要为正交YMn2O5相,兼有少许的六方YMn2O5相,无其它杂质相存在.SEM观察显示,制得的YMn2O5纳米颗粒粒度均匀、形貌规整、呈类球形,平均颗粒尺寸约为45nm.利用紫外—可见光漫反射光谱研究了YMn2O5纳米颗粒的光吸收特性及带隙,获得的光学带隙值为1.21eV.以一种典型的偶氮染料甲基红为目标降解物,研究了YMn2O5纳米颗粒的光催化活性.结果表明,在紫外光和可见光辐照下纳米颗粒均表现出了良好的光催化活性.实验确定了光催化降解率的最佳条件:甲基红的初始浓度为～15mg/L,催化剂的加载量为～1.2g/L.
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| 关 键 词： | YMn2O5 纳米颗粒 光催化活性 |
Nano YMn_2O_5 Visible-light-driven Semiconductor Photocatalyst |
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| WANG Shi-Fa,YANG Hua,XIAN Tao,WEI Zhi-Qiang,MA Jin-Yuan,FENG Wang-Jun.Nano YMn_2O_5 Visible-light-driven Semiconductor Photocatalyst[J].Journal of Inorganic Materials,2011(11):1164-1168. |
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| Authors: | WANG Shi-Fa YANG Hua XIAN Tao WEI Zhi-Qiang MA Jin-Yuan FENG Wang-Jun |
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| Affiliation: | WANG Shi-Fa1,2,YANG Hua1,XIAN Tao1,WEI Zhi-Qiang1,MA Jin-Yuan2,FENG Wang-Jun2(1.State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology,Lanzhou 730050,China,2.School of Science,China) |
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| Abstract: | YMn2O5 nanoparticles were synthesized by a modified polyacrylamide Gel technique.X-ray diffraction(XRD) analysis indicated that the as-synthesized nanoparticles crystallized mostly into orthorhombic YMn2O5 phase and less into hexagonal YMn2O5 phase without the presence of any other impurities.Scanning electron mi-croscope(SEM) observation showed that the prepared YMn2O5 nanoparticles were regularly spherical in shape and highly uniform in size with a diameter of about 45nm.Ultraviolet-visible diffuse reflec... |
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| Keywords: | YMn2O5 nanoparticles photocatalytic activity |
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