| Fe~(3+)-CdS/TiO_2复合半导体光催化剂的制备与表征 |
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| 引用本文： | 苏碧桃,董娜,慕红梅,雷自强,佟永纯,白洁,王克.Fe~(3+)-CdS/TiO_2复合半导体光催化剂的制备与表征[J].精细化工,2007,24(9):856-859,898. |
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| 作者姓名： | 苏碧桃 董娜 慕红梅 雷自强 佟永纯 白洁 王克 |
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| 作者单位： | 西北师范大学,化学化工学院,省部共建生态环境相关高分子材料教育部重点实验室,甘肃省高分子材料重点实验室,甘肃,兰州,730070 |
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| 基金项目： | 甘肃省自然科学基金
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甘肃省555人才基金 |
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| 摘 要： | 采用溶胶-凝胶法制备了系列不同配比的Fe3+-CdS/TiO2光催化材料,用TEM、EDS、XRD、UV-vis等技术对其形貌、结构和光吸收特性进行了表征。以亚甲基蓝(MB)的脱色降解为模型反应,考察了光源、煅烧温度、煅烧时间、掺杂Fe3+和CdS对催化剂催化性能的影响。结果表明,Fe3+掺杂和CdS半导体复合相结合的技术,可以使TiO2对光的响应拓展到整个紫外-可见光区;当n(Fe3+)∶n(CdS)∶n(TiO2)=0.005∶1∶1、煅烧温度为300℃、煅烧时间为1 h、光源为太阳光时,Fe3+-CdS/TiO2的光催化活性最高,在1 h内可以使亚甲基蓝(MB)溶液的降解率达98.62%。
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| 关 键 词： | Fe3+-CdS/TiO2 复合半导体 功能材料 |
| 文章编号： | 1003-5214（2007）09-0856-05 |
| 修稿时间： | 2007-01-222007-05-18 |
Preparation and Photocatalytic Property of Fe3+-CdS/TiO2 Composite Semiconductor |
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| SU Bi-tao,DONG Na,MU Hong-mei,LEI Zi-qiang,TONG Yong-chun,BAI Jie,WANG Ke.Preparation and Photocatalytic Property of Fe3+-CdS/TiO2 Composite Semiconductor[J].Fine Chemicals,2007,24(9):856-859,898. |
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| Authors: | SU Bi-tao DONG Na MU Hong-mei LEI Zi-qiang TONG Yong-chun BAI Jie WANG Ke |
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| Affiliation: | College of Chemistry and Chemical Engineering, Northwest Normal University, Key Labortory of Eco-Environment-Related Polymer Materials, Key Labortory of Gansu Polymer Material, Lanzhou 730070, Gansu, China |
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| Abstract: | A series of Fe3+-CdS/TiO2 photocatalysts were successfully synthesized by a sol-gel method and characterized by TEM,EDS,XRD and UV-vis diffuse reflectance spectra(DRS).Taking the degradation of methylene blue(MB) dye as model reaction,the effects of light source,temperature and time of calcination,doped Fe3+ and coupled CdS on its photocatalytic property were inspected.The results indicated that at n(CdS)∶n(Fe3+)∶n(TiO2)=0.005∶1∶1,temperature of calcination 300 ℃ and time of calcination 1 h,the composite semiconductor showed good photocatalytic activity,and the degradation rate of MB reached 98.62% when the reaction time was 1 h under the sunlight illumination. |
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| Keywords: | Fe3 -CdS/TiO2 composite semiconductor functional materials |
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