کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10248039 | 49175 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation, channel surface hydroxyl characterization and photoluminescence properties of nanoporous nickel phosphate VSB-1
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Preparation, channel surface hydroxyl characterization and photoluminescence properties of nanoporous nickel phosphate VSB-1 Preparation, channel surface hydroxyl characterization and photoluminescence properties of nanoporous nickel phosphate VSB-1](/preview/png/10248039.png)
چکیده انگلیسی
VSB-1 is one of the most important thermostable nanoporous transition metal phosphates. The synthetic condition was discussed in detail. Hydroxyl groups on the channel surface of VSB-1 play a critical role in the reactions requiring Bronsted acidity. The types of hydroxyl groups of VSB-1 material were distinguished by in situ FT-IR measurements for the samples before and after silylation. In addition, ion exchange studies showed that the hydroxyl groups in VSB-1 were acidic. The acidic site density and acid strength of VSB-1 were measured by NH3-TPD. Violet-blue photoluminescence (PL) emission bands at 412, 436 and 470Â nm were observed for VSB-1 at ambient temperature. Enhanced PL intensities were obtained by encapsulating CuO, NiO and CoO nanoclusters in the channels of VSB-1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 85, Issue 3, 7 November 2005, Pages 355-364
Journal: Microporous and Mesoporous Materials - Volume 85, Issue 3, 7 November 2005, Pages 355-364
نویسندگان
Xiuli Wang, Qiuming Gao, Chundong Wu, Juan Hu, Meiling Ruan,