摘要
合成 Bi@Bi2O3 microspheres 经由一条帮助微波的 solvothermal 线路被综合了。Bi@Bi2O3 microspheres 在范围有狭窄的尺寸分布 1.22.8 公里。葡萄糖作为 reductant 被选择，是的 BiCl3 铋来源，和乙烯乙二醇(例如) 作为在合成系统的溶剂。同样综合的样品被X光检查衍射( XRD )描绘，拉曼光谱学，X光检查光电子光谱学( XPS )，扫描电子显微镜学( SEM )，传播电子显微镜学( TEM )，粒子直径分发，精力散X光检查光谱学(版本)，紫外可见(紫外力)光谱学，并且光致发光( PL )光谱学。Bi@Bi2O3 microspheres 的 photocatalytic 活动被玫瑰精 B (RhB ) 和甲基橘子(瞬间) 染料的 photodegradation 在紫外轻照耀下面评估。降级面对同样综合的 Bi@Bi2O3 microspheres 在 4 h 反应以后为瞬间为 RhB 和 100% 到达了 96.6% 。
Composite Bi@Bi2O3 microspheres have been synthesized via a microwave-assisted solvothermal route. The Bi@Bi2O3 microspheres had a narrow size distribution in the range 1.2-2.8 mm. Glucose was selected as the reductant, BiCl3 as the bismuth source, and ethylene glycol （EG） as the solvent in the synthesis system. The as-synthesized sample was characterized by X-ray diffraction （XRD）, Raman spectroscopy, X-ray photoelectron spectroscopy （XPS）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, particle diameter distribution, energy dispersive X-ray spectroscopy （EDS）, ultraviolet-visible （UV-vis） spectroscopy, and photoluminescence （PL） spectroscopy. The photocatalytic activities of the Bi@Bi2O3 microspheres were evaluated by the photodegradation of rhodamine B （RhB） and methyl orange （MO） dyes under UV light irradiation. The degradation reached -96.6% for RhB and 100% for MO after 4 h reaction in the presence of the as-synthesized Bi@Bi2O3 microspheres.
基金
The financial supports Science Foundation of from the National Natural China （Nos. 20921001 and20535020）, the Innovation Method Fund of China （No 20081885189）, and the National High Technology Research and Development Program of China （No. 2009AA03Z321） are acknowledged.
