Morphology of metal nanoparticles photodeposited on TiO2/silical gel and photothermal activity for destruction of ethylene
文献类型：期刊论文
| 作者 | Hu, C; Lin, LY; Hu, XX |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2006 |
| 卷号 | 18期号:1页码:76-82 |
| 关键词 | photodeposition TiO2/silical gel noble metal dispersion photothermal synergism |
| 英文摘要 | The morphology of supported metal nanoparticles on TiO2/silical gel (TSO) and photothermal synergism were investigated for destruction of ethylene. During photocatalytic deposition of metal nanopartilces, the effects of pH and light intensity on the morphology of coated platinum, palladium, gold on TiO2/silical gel were studied. Moreover, these catalysts were characterized by TEM, UV-Vis DRS. The pH of preparing solution have strong influence on dispersion, size and sites of Pt, Pd and Au on TSO, which were controlled by the electrostatic binding of HPtCl6-, AuCl4- and TiOH2+, Pd2+ and TiO- respectively. Platinum, gold and palladium nanoparticles were uniformly highly dispersed on the titanol sites not silanol of TiO2/silical gel under pH=2, pH=9.9 respectively. For the photodegradation of ethylene, they show higher photothermal efficiency than those prepared with other pH conditions under UV illumination in a non-circulating photoreactor. The optimum weight loadings of Pt, Au, and Pd were 0.25 wt%, 0.5 wt%, 1 wt%, respectively. The synergistic effect enhanced ethylene removal and CO, production. These results verify that the best photothermal synergistic effect depends on the dispersion, size of noble metal nano-particles. FTIR analyses of the used Pt-, Pd-TSO catalysts indicated that no significant by-products were accumulated on the surface of the catalysts, leading to them longer lifetime. |
| WOS记录号 | WOS:000234759500015 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23009]  |
| 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,Lin, LY,Hu, XX. Morphology of metal nanoparticles photodeposited on TiO2/silical gel and photothermal activity for destruction of ethylene[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2006,18(1):76-82. |
| APA | Hu, C,Lin, LY,&Hu, XX.(2006).Morphology of metal nanoparticles photodeposited on TiO2/silical gel and photothermal activity for destruction of ethylene.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,18(1),76-82. |
| MLA | Hu, C,et al."Morphology of metal nanoparticles photodeposited on TiO2/silical gel and photothermal activity for destruction of ethylene".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 18.1(2006):76-82. |
入库方式： OAI收割
来源：生态环境研究中心
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