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	TiO_2/SiO_2/-γFe_2O_3-SiO_2磁性光催化剂的制备与表征
	王松威 ; 徐盛明 ; 陈崧哲 ; 徐景明 ; WANG Songwei ; XU Shengming ; CHEN Songzhe ; XU Jingming
	2010-06-04 ; 2010-06-04
关键词	氧化铁 氧化钛 氧化硅 磁性光催化剂 热稳定性 包覆 maghemite,titania,silica,magnetic photocatalyst,heat resistance,coating O643.36
其他题名	Preparation and Characterization of TiO_2/SiO_2/γ-Fe_2O_3-SiO_2 Magnetic Photocatalyst
中文摘要	A γ-Fe_2O_3-SiO_2 composite was prepared by sol-gel method followed by calcination at 700 ℃ for 30 min starting from tetraethoxysilane and iron nitrate.Upon further coating with SiO_2 and TiO_2,a TiO_2/SiO_2/(γ-Fe_2O_3)-SiO_2 magnetic photocatalyst was obtained.XRD results show that Fe in the composite converts to the(γ-Fe_2O_3) phase up to a processing temperature of 700 ℃,and further increase in temperature results in the formation of the(α-Fe_2O_3) phase.The TiO_2/SiO_2/(γ-Fe_2O_3)-SiO_2 samples obtained are monodisperse spherical particles with 200～250 nm diameter,well coated firstly by an amorphous SiO_2 layer and then by an anatase TiO_2 layer.The TiO_2/SiO_2/(γ-Fe_2O_3)-SiO_2 particles retain their magnetic property well and show high activity for the photocatalytic degradation of salicylhydroxamic acid.; 国家自然科学基金资助项目(50274045)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/36204]
专题	清华大学
推荐引用方式 GB/T 7714	王松威,徐盛明,陈崧哲,等. TiO_2/SiO_2/-γFe_2O_3-SiO_2磁性光催化剂的制备与表征[J],2010, 2010.
APA	王松威.,徐盛明.,陈崧哲.,徐景明.,WANG Songwei.,...&XU Jingming.(2010).TiO_2/SiO_2/-γFe_2O_3-SiO_2磁性光催化剂的制备与表征..
MLA	王松威,et al."TiO_2/SiO_2/-γFe_2O_3-SiO_2磁性光催化剂的制备与表征".(2010).

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