Development of organic-Inorganic nanostructured Environmental Photocatalysts with Tunable Molecular Selectivity.

具有可调分子选择性的有机-无机纳米结构环境光催化剂的开发。

基本信息

批准号：
15560667
负责人：
INUMARU Kei
金额：
$ 2.43万
依托单位：
HIROSHIMA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

In this study, combination between molecular selective adsorption and photocatalysis was investigated. n-Octyl-grafted TiO_2 (C8-TiO_2) was prepared as a model of a photocatalyst with high molecular adsorption selectivity, and its photocatalytic activity for the decomposition of dilute 4-nonylphenol (an endocrine disrupter, ca. 2 ppm) in water was investigated. The catalyst was highly active in the presence of concentrated phenol (1000 ppm), and the 4-nonylphenol was decomposed in 180 min, while pristine TiO_2 (P-25) under the same conditions showed much lower activity. The high C8-TiO_2 activity was ascribed to the molecular selective adsorption of the organic molecules on the alkyl-grafted hydrophobic surface. Infrared spectra showed that the grafted alkyl groups were gradually decomposed under photoirradiation. The model catalyst demonstrated that molecular selective adsorption is important for removal of low-concentration contaminants in the presence of other, more concentrated com … More pounds.n-Octyl groups were grafted onto the pore walls of TiO2-MCM-41 in which TiO2 was highly dispersed in the nanopores (8.7wt%as TiO2), and the photocatalytic properties for decomposition of dilute 4-nonylphenol polyethoxylate (NPEO) in water were investigated. The activities were evaluated on the basis of the benzene ring decomposition rates.n-Octyl-grafted TiO2-MCM-41 (C8-TiO2-MCM-41) efficiently decomposed dilute NPEO. The activity of C8-TiO2-MCM-41 per TiO2 weight was higher than that of P-25 TiO2 catalyst under the same conditions. In contrast, the activity of TiO2-MCM-41 without alkyl grafting was low. NPEO at low concentrations in solution (less than 5ppm) was preferentially adsorbed onto C8-TiO2-MCM-41, while the adsorption onto TiO2-MCM-41 under the same conditions was small. The higher activity of C8-TiO2-MCM-41 was ascribed to the highly concentrated NPEO in the hydrophobic nanospaces.Photoirradiation of C8-TiO2-MCM-41 in water for 3h decreased its carbon content by 17%, but further irradiation for 7h brought about only a further 8% decrease, demonstrating a relatively long lifetime for the alkyl groups grafted onto the C8-TiO2-MCM-41. Less

在这项研究中，研究了分子选择性吸附和光催化之间的组合。在水中研究了N-辛基移植的TIO_2（C8-TIO_2）作为具有高分子添加选择性的光催化剂的模型，其光催化活性是在水中研究的。该催化剂在浓缩苯酚（1000 ppm）的情况下高度活跃，并且在180分钟内分解了4-北苯酚，而原始的TIO_2（P-25）在相同的条件下显示出低得多的活性。高C8-TIO_2活性分配给了酒精植物疏水表面上有机分子的分子选择性添加。红外光谱表明，在光辐射下，嫁接的酒精基团逐渐分解。 The model catalyst demonstrated that molecular selective addorption is important for Removal of low-concentration contaminants in the presence of other, more concentrated com … More pounds.n-Octyl groups were grafted onto the pore walls of TiO2-MCM-41 in which TiO2 was highly dispersed in the nanopores (8.7wt%as TiO2), and the photocatalytic properties for decomposition of dilute研究了水中的4-北苯酚聚甲氧基（NPEO）。基于苯环的分解速率评估了活动。N-辛基 - 接枝的TiO2-MCM-41（C8-TIO2-MCM-41）有效分解稀释的NPEO。在相同条件下，每TIO2的C8-TIO2-MCM-41的活性高于P-25 TiO2催化剂的活性。相反，没有烷基嫁接的TiO2-MCM-41的活性很低。在溶液中低浓度（小于5ppm）的NPEO优先吸附到C8-TIO2-MCM-41上，而在相同条件下对TiO2-MCM-41的吸附很小。 The higher activity of C8-TiO2-MCM-41 was assigned to the highly concentrated NPEO in the hydrophobic nanospaces.Photoirradiation of C8-TiO2-MCM-41 in water for 3h decreased its carbon content by 17%, but further irradiation for 7h brought about only a further 8% decrease, demonstrating a relative long lifetime for the alkyl groups grafted onto the C8-TIO2-MCM-41。较少的

项目成果

期刊论文数量（28）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Aminopropyl-Glucose Sequentially Grafted Mesoporous Silica Nanocomposite as a Novel Boron Adsorbent

氨丙基-葡萄糖顺序接枝介孔二氧化硅纳米复合材料作为新型硼吸附剂

DOI：
发表时间：
2004
期刊：
Chem.Lett. 33・12
影响因子：
0
作者：
T.Kai;T.Mizusako;T.T.akahashi;H Kawano;Kei Inumaru;Kei Inumaru;T.Kasahara;Masataka Yasui
通讯作者：
Masataka Yasui

Design of organic- inorganic cooperative functions of mesoporous materials

介孔材料有机-无机协同功能的设计

DOI：
发表时间：
2004
期刊：
Zeolite(Japanese) 21(4)
影响因子：
0
作者：
T.Kai;T.Mizusako;T.T.akahashi;H Kawano;Kei Inumaru;Kei Inumaru;T.Kasahara;Masataka Yasui;犬丸啓;Kei Inumaru;Kei Inumaru;T.Kasahara;Masataka Yasui;K.Inumaru
通讯作者：
K.Inumaru

Enhanced Photo-Catalytic Decomposition of Nonylphenol by Surface-Organografted TiO_2 : a Combination of Molecular Selective Adsorption and Photo-Catalysis.

表面有机接枝 TiO_2 增强壬基酚的光催化分解：分子选择性吸附和光催化的结合。

DOI：
发表时间：
2004
期刊：
Appl.Catal.B Environmental 52(4)
影响因子：
0
作者：
T.Kai;T.Mizusako;T.T.akahashi;H Kawano;Kei Inumaru;Kei Inumaru;T.Kasahara;Masataka Yasui;犬丸啓;Kei Inumaru;Kei Inumaru
通讯作者：
Kei Inumaru

Molecular selective adsorption of dilute alkylphenols and alkylanilines from water by alkyl-grafted MCM-41 : Tunability of the cooperative organic-inorganic function in the nanostructure

烷基接枝MCM-41对水中稀烷基酚和烷基苯胺的分子选择性吸附：纳米结构中有机-无机协同功能的可调性

DOI：
发表时间：
2004
期刊：
Phys.Chem.Chem.Phys 6・12
影响因子：
0
作者：
T.Kai;T.Mizusako;T.T.akahashi;H Kawano;Kei Inumaru
通讯作者：
Kei Inumaru

Aminopropyl-Glucose Sequentially Grafted Mesoporous Silica Nanocomposite as a Novel Boron Adsorbent.

氨丙基-葡萄糖顺序接枝介孔二氧化硅纳米复合材料作为新型硼吸附剂。

DOI：
发表时间：
2004
期刊：
Chem.Lett. 33(12)
影响因子：
0
作者：
T.Kai;T.Mizusako;T.T.akahashi;H Kawano;Kei Inumaru;Kei Inumaru;T.Kasahara;Masataka Yasui;犬丸啓;Kei Inumaru;Kei Inumaru;T.Kasahara;Masataka Yasui
通讯作者：
Masataka Yasui