Effect of Ho-doping on photocatalytic activity of nanosized TiO2 catalyst
Ho-doped TiO2 nanoparticles with higher photocatalytic activity were prepared by an acid-catalyzed sol-gel method. The photocatalytic decomposition of methyl orange in aqueous solution was used as a probe reaction to evaluate their photocatalytic activities. The effects of Ho doping on the crystalli...
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| Veröffentlicht in: | Journal of rare earths 2008, Vol.26 (1), p.71-75 |
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| container_title | Journal of rare earths |
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| creator | 蔡河山 刘国光 吕文英 黎晓霞 余林 李大光 |
| description | Ho-doped TiO2 nanoparticles with higher photocatalytic activity were prepared by an acid-catalyzed sol-gel method. The photocatalytic decomposition of methyl orange in aqueous solution was used as a probe reaction to evaluate their photocatalytic activities. The effects of Ho doping on the crystallite sizes, crystal pattern, surface composition, and optical property of the catalysts were investigated by means of techniques such as X-Ray Diffraction （XRD）, Transmission Electron Microscopy （TEM）, Diffuse Reflectance UV-Vis Spectroscopy （UV-Vis DRS）, Fourier Transform Infrared （FT-IR）, and Photo-Luminiscence （PL） spectra. Moreover, the modification mechanism of Ho doping was also discussed. The results showed that Ho doping could inhibit phase transformation from anatase to rntile, suppress the growth of TiO2 grains, cause blue shift of the absorption spectrum edge, accelerate surface hydroxylation, and enhance the separation efficiency of photoinduced electron-hole pairs, which resulted in a significant improvement in the photoreactivity of Ho-doped TiO2. Among them, the Ho-doped TiO2 calcined at 500℃ achieved the highest photocatalytic activity. |
| doi_str_mv | 10.1016/S1002-0721(08)60040-X |
| format | Article |
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The photocatalytic decomposition of methyl orange in aqueous solution was used as a probe reaction to evaluate their photocatalytic activities. The effects of Ho doping on the crystallite sizes, crystal pattern, surface composition, and optical property of the catalysts were investigated by means of techniques such as X-Ray Diffraction （XRD）, Transmission Electron Microscopy （TEM）, Diffuse Reflectance UV-Vis Spectroscopy （UV-Vis DRS）, Fourier Transform Infrared （FT-IR）, and Photo-Luminiscence （PL） spectra. Moreover, the modification mechanism of Ho doping was also discussed. The results showed that Ho doping could inhibit phase transformation from anatase to rntile, suppress the growth of TiO2 grains, cause blue shift of the absorption spectrum edge, accelerate surface hydroxylation, and enhance the separation efficiency of photoinduced electron-hole pairs, which resulted in a significant improvement in the photoreactivity of Ho-doped TiO2. 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All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2605-aed25128f0fe00fe65e49705e259eeb13c165b7fb8fdc68f1daa76162733ae1f3</citedby><cites>FETCH-LOGICAL-c2605-aed25128f0fe00fe65e49705e259eeb13c165b7fb8fdc68f1daa76162733ae1f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/84120X/84120X.jpg</thumbnail><link.rule.ids>314,777,781,4010,27904,27905,27906</link.rule.ids></links><search><creatorcontrib>蔡河山 刘国光 吕文英 黎晓霞 余林 李大光</creatorcontrib><title>Effect of Ho-doping on photocatalytic activity of nanosized TiO2 catalyst</title><title>Journal of rare earths</title><addtitle>Journal of Rare Earths</addtitle><description>Ho-doped TiO2 nanoparticles with higher photocatalytic activity were prepared by an acid-catalyzed sol-gel method. The photocatalytic decomposition of methyl orange in aqueous solution was used as a probe reaction to evaluate their photocatalytic activities. The effects of Ho doping on the crystallite sizes, crystal pattern, surface composition, and optical property of the catalysts were investigated by means of techniques such as X-Ray Diffraction （XRD）, Transmission Electron Microscopy （TEM）, Diffuse Reflectance UV-Vis Spectroscopy （UV-Vis DRS）, Fourier Transform Infrared （FT-IR）, and Photo-Luminiscence （PL） spectra. Moreover, the modification mechanism of Ho doping was also discussed. The results showed that Ho doping could inhibit phase transformation from anatase to rntile, suppress the growth of TiO2 grains, cause blue shift of the absorption spectrum edge, accelerate surface hydroxylation, and enhance the separation efficiency of photoinduced electron-hole pairs, which resulted in a significant improvement in the photoreactivity of Ho-doped TiO2. Among them, the Ho-doped TiO2 calcined at 500℃ achieved the highest photocatalytic activity.</description><subject>二氧化钛</subject><subject>光催化材料</subject><subject>纳米材料</subject><issn>1002-0721</issn><issn>2509-4963</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNo90EFLwzAUwPEgCs7pRxCKB9FD9SVp0vQoY7rBYAcneAtpmsxoTWaTqdunt3PiIbzL773AH6FzDDcYML99xAAkh5LgKxDXHKCA_PkADQiDKi8qTg_R4J8co5MYXwFoySoYoOnYWqNTFmw2CXkTVs4vs-Cz1UtIQauk2k1yOlM6uU-XNjvnlQ_RbU2TLdycZHsU0yk6sqqN5uxvDtHT_XgxmuSz-cN0dDfLNeHAcmUawjARFqyB_nFmiqoEZgirjKkx1ZizurS1sI3mwuJGqZJjTkpKlcGWDtH1_u6X8lb5pXwN6873P8rt8jt919IQAAF9Gdbby71ddeFjbWKS7y5q07bKm7COkhJKS0xFD9ke6i7E2BkrV517V91GYpC7yPI3stwVlCDkb2T53O9d_O29BL_86OPJWuk361ojCeeVEAWmP83qeso</recordid><startdate>2008</startdate><enddate>2008</enddate><creator>蔡河山 刘国光 吕文英 黎晓霞 余林 李大光</creator><general>Department of Resource and Environment,Foshan University,Foshan 528000,China%Faculty of Environmental Science and Engineering,Cuangzhou 510006, China%Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W94</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>2008</creationdate><title>Effect of Ho-doping on photocatalytic activity of nanosized TiO2 catalyst</title><author>蔡河山 刘国光 吕文英 黎晓霞 余林 李大光</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2605-aed25128f0fe00fe65e49705e259eeb13c165b7fb8fdc68f1daa76162733ae1f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>二氧化钛</topic><topic>光催化材料</topic><topic>纳米材料</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>蔡河山 刘国光 吕文英 黎晓霞 余林 李大光</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库-自然科学</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Journal of rare earths</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>蔡河山 刘国光 吕文英 黎晓霞 余林 李大光</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Ho-doping on photocatalytic activity of nanosized TiO2 catalyst</atitle><jtitle>Journal of rare earths</jtitle><addtitle>Journal of Rare Earths</addtitle><date>2008</date><risdate>2008</risdate><volume>26</volume><issue>1</issue><spage>71</spage><epage>75</epage><pages>71-75</pages><issn>1002-0721</issn><eissn>2509-4963</eissn><abstract>Ho-doped TiO2 nanoparticles with higher photocatalytic activity were prepared by an acid-catalyzed sol-gel method. The photocatalytic decomposition of methyl orange in aqueous solution was used as a probe reaction to evaluate their photocatalytic activities. The effects of Ho doping on the crystallite sizes, crystal pattern, surface composition, and optical property of the catalysts were investigated by means of techniques such as X-Ray Diffraction （XRD）, Transmission Electron Microscopy （TEM）, Diffuse Reflectance UV-Vis Spectroscopy （UV-Vis DRS）, Fourier Transform Infrared （FT-IR）, and Photo-Luminiscence （PL） spectra. Moreover, the modification mechanism of Ho doping was also discussed. The results showed that Ho doping could inhibit phase transformation from anatase to rntile, suppress the growth of TiO2 grains, cause blue shift of the absorption spectrum edge, accelerate surface hydroxylation, and enhance the separation efficiency of photoinduced electron-hole pairs, which resulted in a significant improvement in the photoreactivity of Ho-doped TiO2. Among them, the Ho-doped TiO2 calcined at 500℃ achieved the highest photocatalytic activity.</abstract><pub>Department of Resource and Environment,Foshan University,Foshan 528000,China%Faculty of Environmental Science and Engineering,Cuangzhou 510006, China%Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510006,China</pub><doi>10.1016/S1002-0721(08)60040-X</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1002-0721 |
| ispartof | Journal of rare earths, 2008, Vol.26 (1), p.71-75 |
| issn | 1002-0721 2509-4963 |
| language | eng |
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| source | Elsevier ScienceDirect Journals; Alma/SFX Local Collection |
| subjects | 二氧化钛 光催化材料 纳米材料 |
| title | Effect of Ho-doping on photocatalytic activity of nanosized TiO2 catalyst |
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