| 引用本文: | 王敏,王里奥,贺健,张东,张文杰.Cu掺杂FeVO4光催化剂的制备及其光催化性能[J].材料科学与工艺,2010,18(5):670-674.DOI:10.11951/j.issn.1005-0299.20100517. |
| WANG Min,WANG Li-ao,HE Jian,ZHANG Dong,ZHANG Wen-jie.Synthesis and photocatalytic property of Cu-doped FeVO4 photocatalyst[J].Materials Science and Technology,2010,18(5):670-674.DOI:10.11951/j.issn.1005-0299.20100517. |
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| 摘要: |
| 为进一步提高钒酸铁(FeVO4)光催化活性,采用液相沉淀法分别制备钒酸铁和钒酸铜前躯体,再将钒酸铁和钒酸铜前驱体混合后进行热处理,制备了铜掺杂钒酸铁光催化剂,并采用X射线衍射(XRD)、扫描电子显微镜(SEM)、表面积(BET)和X射线光电子能谱分析(XPS)对样品进行表征和分析.在可见光照射下,通过光催化降解甲基橙溶液评价Cu掺杂对FeVO4光催化剂活的影响.结果表明,Cu/FeVO4光催化剂为三斜型,当掺杂质量分数大于5%时,晶体中出现新相Cu3Fe4(VO4)6;掺杂后样品的表面形貌产生了变化,但其比表面积变化较小;Cu/FeVO4样品的光催化活性大幅提高,主要是由于FeVO4和新相间起到类似复合半导体的作用;在所进行实验的条件下,钒酸铜的最佳掺杂质量分数为5%时,掺杂后的FeVO4对甲基橙溶液的脱色率较未掺杂前提高30%左右. |
| 关键词: 钒酸铁 铜掺杂 光催化剂 甲基橙 |
| DOI：10.11951/j.issn.1005-0299.20100517 |
| 分类号:O643.36 |
| 基金项目:国家自然科学基金资助项目(50774074) |
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| Synthesis and photocatalytic property of Cu-doped FeVO4 photocatalyst |
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WANG Min1, WANG Li-ao2, HE Jian3, ZHANG Dong1, ZHANG Wen-jie1
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1.College of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110168,China;2.School of Resource and Environmental Science,Chongqing University,Chongqing 400044,China;3.Shenyang Paraffin Chemical Co.,Ltd.Shenyang 110141,China
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| Abstract: |
| To further improve the photocatalytic activity of iron(III) vanadate(FeVO4),Cu-doped iron vanadatesamples were prepared by calcinating the mixture of iron vanadate and copper vanadate precusor,which were prepared through liquid phase precipitation method and characterized by X-ray diffraction(XRD),scanning electron microsoope(SEM),specific surface area(BET) and X-ray photoelectron spectroscopy(XPS).The photocatalytic activity under visible light was evaluated by photocatalytic degradation of methyl orange(MO) in the solution.The XRD patterns indicate that the Cu/FeVO4 photcatalysts consist of trclinic phase.And the new phase(Cu3Fe4(VO4)6) appears when the doping content reaches 5 wt%.The SEM images show that the Cu-doping changes the surface morphology and the BET results show that there is no change for their specific surface area.The photocatalytic activities of the Cu/FeVO4 sample are significantly enhanced,which is probably due to the composite function between FeVO4 and Cu3Fe4(VO4)6.In the experimental conditions used,the optimal photocatalytic activity for all the prepared samples can be achieved when the CuVO4 doping is 5 wt%.The decoloration rate of MO is increased by 30% or so compared with that of pure FeVO4. |
| Key words: iron(III) vanadate(FeVO4) Cu doping photocatalyst methyl orange(MO) |
