Structure and photocatalytic performance of surface bond-conjugated TiO2/SiO2 catalyst
文献类型：期刊论文
| 作者 | Hu, C; Wang, YZ; Tang, HX |
| 刊名 | CHINESE JOURNAL OF CATALYSIS
 |
| 出版日期 | 2001 |
| 卷号 | 22期号:2页码:185-188 |
| 关键词 | titania porous silica impregnation surface bond conjugation photocatalysis dispersion azo-dye |
| 英文摘要 | Surface bond-conjugated TiO2/SiO2 catalyst was prepared by means of impregnation method with cyclohexane solution of tetrabutyl titanate. The catalyst overcomes the difficulty of liquid-solid separation owing to the formation of milky dispersion after mixing the powdered TiO2 in water. Based on the results of XRD, FT-IR, XPS and BET measurements, the growth of TiO2 (predominantly anatase) on the SiO2 support seems to occur by anchoring the TiO2 phase through Ti-O-Si cross-linking bonds. The structure model of TiO2/SiO2 was proposed. Compared with B-TiO2 the most efficient catalyst is 30% TiO2/SiO2 which showed three times higher photoactivity for degradation of reactive brilliant red K-2G(R15). In addition, the catalyst had higher photoactivity and bigger specific surface area on SiO2 with smaller particle size than on that with larger particle size. SiO2 gel plays the basic roles of dispersion and support for powder TiO2. Meanwhile, SiO2 gel has better transmission for light. The isoelectronic point of the catalyst. was 3.0 pH units by measurement of zeta-potential, indicating the presence of acidity on the catalyst surface. |
| WOS记录号 | WOS:000170359000023 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24090]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Hu, C,Wang, YZ,Tang, HX. Structure and photocatalytic performance of surface bond-conjugated TiO2/SiO2 catalyst[J]. CHINESE JOURNAL OF CATALYSIS,2001,22(2):185-188. |
| APA | Hu, C,Wang, YZ,&Tang, HX.(2001).Structure and photocatalytic performance of surface bond-conjugated TiO2/SiO2 catalyst.CHINESE JOURNAL OF CATALYSIS,22(2),185-188. |
| MLA | Hu, C,et al."Structure and photocatalytic performance of surface bond-conjugated TiO2/SiO2 catalyst".CHINESE JOURNAL OF CATALYSIS 22.2(2001):185-188. |
入库方式： OAI收割
来源：生态环境研究中心
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