硅酸盐学报Issue(8)：1158-1162,5.DOI:10.7521/j.issn.0454-5648.2013.08.20
不同形貌氢氧化镧纳米晶的光催化性能
Photocatalytic Properties of La(OH)3 Nanoparticles with Different Morphologies
摘要
Abstract
La(OH)3 nanoparticles with various morphologics (i.e., irregular, sheet and rod) were synthesized using La(NO3)3·6H2O as raw materials by a microwave hydrothermal method. The phase composition, morphology and optical properties of as-prepared sam-ples were characterized by X-ray diffraction, field emission scanning electron microscopy and ultraviolet–visible spectroscopy (UV–Vis), respectively. Results show that the morphology of the nanoparticle changes from irregular shapes to sheets, and then to rods when the solution concentration increases. According to the UV–Vis and photocatalytic measurements, La(OH)3 has a high ab-sorption in 200–400 nm. La(OH)3 nanorods has a highest absorption while the irregular nanoparticles has a lowest absorption. The degradation rate of La(OH)3 nanorods is 93%, showing a superior effect on the photocatalytic propertie to methyl blue. The degrada-tion rates of La(OH)3 nanosheets and irregular nanoparticles obtained under the same conditions are 87%and 75%, respectively.关键词
微波水热法/氢氧化镧/纳米晶/光催化Key words
microwave hydrothermal/lanthanum hydroxide/nanocrystal/photocatalytic分类
化学化工引用本文复制引用
符馨元,黄剑锋,曹丽云,李嘉胤..不同形貌氢氧化镧纳米晶的光催化性能[J].硅酸盐学报,2013,(8):1158-1162,5.基金项目
陕西省自然科学基金(2010JM6001)；陕西省教育厅专项项目(2010JK444)；陕西省国际科技合作重点项目(2011KW-11)和陕西科技大学研究生创新基金资助项目。 （2010JM6001）
