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学科主题: 物理化学
题名: Study on the Influence of Ni Modifying on Phase Transformation and Photocatalytic Activity of TiO2
作者: Wang Yan1;  Zhang Jing1;  Liu Shiyang2;  Yan Song1;  Wu Weicheng1;  Xu Qian3;  Li Can3
通讯作者: 张静
关键词: TiO2 ;  Ni modifying ;  wastewater treatment ;  UV Raman spectroscopy ;  phase transformation
刊名: CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY
发表日期: 2014-09-01
卷: 16, 期:3, 页:42-49
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Energy & Fuels ;  Engineering, Chemical ;  Engineering, Petroleum
研究领域[WOS]: Energy & Fuels ;  Engineering
英文摘要: The Ni-modified TiO2 was synthesized using two methods including co-precipitation (Ni doped TiO2, Ni-TiO2) and wet impregnation (Ni loaded TiO2, Ni/TiO2). The surface and bulk crystalline phases of Ni-modified TiO2 were investigated by using X-ray diffractometry (XRD), UV Raman spectroscopy, TEM, and SEM. It is observed that Ni doping can promote the phase transition and grain size growth of TiO2. Moreover, the propagation of the rutile phase from the bulk into the surface region of TiO2 is increased when the Ni doping amount reaches up to 3%. However, in Ni/TiO2, it is found out that the surface and bulk phase transformation of TiO2 can be inhibited after impregnation of 1% of Ni on the TiO2. Compared with the co-precipitation method, Ni species may be more enriched in the surface of the Ni/TiO2 sample upon adoption of the impregnation method, and the direct contact of anatase particles of TiO2 is avoided. As a consequence, the phase transition in the surface and bulk region of TiO2 can be effectively inhibited by Ni loading. Additionally, the activity of the photocatalytic degradation of RhB on the 3Ni-TiO2-600 degrees C sample is higher than that on the 3 Ni/TiO2-600 degrees C sample. The phase junction formed between anatase and rutile in the surface region of 3Ni-TiO2-600 degrees C may the main reason for its high photocatalytic activity.
关键词[WOS]: SIZE ;  FILMS ;  NANOPARTICLE ;  DEGRADATION ;  ANATASE ;  SURFACE ;  WATER
语种: 英语
WOS记录号: WOS:000343717100006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143860
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Fushun 113001, Peoples R China
2.SINOPEC Tianjin Branch, Olefin Div, Tianjin 300270, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Wang Yan,Zhang Jing,Liu Shiyang,et al. Study on the Influence of Ni Modifying on Phase Transformation and Photocatalytic Activity of TiO2[J]. CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY,2014,16(3):42-49.
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