Creating an Optimal Microenvironment within Mesoporous Silica MCM-41 for Capture of Tobacco-Specific Nitrosamines in Solution
| Autor: | Zhi Peng Wang, Ying Wang, Jian Hua Zhu, Shuo Hao Li, Yang-zhong Wang, Wei-miao Wang, Xiao Dan Sun, He-ming Yao, Wen-bo Gu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Carbonization Inorganic chemistry 02 engineering and technology Mesoporous silica 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Micelle 0104 chemical sciences Adsorption X-ray photoelectron spectroscopy MCM-41 General Materials Science Tobacco-specific nitrosamines 0210 nano-technology Mesoporous material |
| Zdroj: | ACS applied materialsinterfaces. 9(32) |
| ISSN: | 1944-8252 |
| Popis: | To meet the requirement of capturing tobacco-specific nitrosamines (TSNA) for environment protection, a unique microenvironment was carefully created inside the channels of mesoporous silica MCM-41. In situ carbonization of template micelles at 923 K, combined with the excess aluminum used in one-pot synthesis of MCM-41, is adopted to tailor the tortuosity of mecsoporous channels, while loaded metal oxides (5 wt %) and the Al component in the framework are employed to exert the necessary electrostatic interaction toward the target carcinogens TSNA in solution. The elaborated microenvironment created in mesoporous sorbents was characterized with XRD, N2 adsorption–desorption, TEM, XPS, and TG-DSC methods. Various solutions of Burley- and Virginia-type tobaccos were used to assess the adsorption performance of new mesoporous sorbents, and the influence of the solid-to-liquid ratio, adsorption time, and loading amount of CuO on the adsorption was carefully examined. The representative sample 5%Cu/AM-10c coul... |
| Databáze: | OpenAIRE |
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