کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6587728 | 456414 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photocatalytic oxidation of acetaldehyde with ZnO-quantum dots
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Photocatalytic oxidation of acetaldehyde with ZnO-quantum dots Photocatalytic oxidation of acetaldehyde with ZnO-quantum dots](/preview/png/6587728.png)
چکیده انگلیسی
In this paper, the comparison study of photocatalytic oxidation properties of TiO2 and ZnO-quantum dots (QDs) in gaseous phase was designed and performed to degrade acetaldehyde (CH3CHO) first time. The obtained results showed that the 1st order rate constant for the prepared QDs of ZnO (1.9Â ÃÂ 10â2/min) is one magnitude higher than that of Degussa P-25 (8.3Â ÃÂ 10â3/min). The efficiencies were found to be 70% and 92% for Degussa P-25 and ZnO-QDs respectively in 120Â min of reaction time. The QDs were prepared from zinc nitrate hexahydrate (Zn(NO3)â
6H2O), n-propylamine and SDS surfactant in 6Â h refluxing. The crystallinity of the product was analyzed with X-ray diffraction (XRD) and it reveals that prepared QDs size is very small and it exhibit wurzite phase. The general morphology of prepared QDs were observed with using FESEM and TEM, which showed that the average size are in the range of â¼6-7Â nm. The elemental and compositional analysis was also carried out with FTIR spectroscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 226, 15 June 2013, Pages 154-160
Journal: Chemical Engineering Journal - Volume 226, 15 June 2013, Pages 154-160
نویسندگان
Rizwan Wahab, Suraj Kumar Tripathy, Hyung-Shik Shin, Mamata Mohapatra, Javed Musarrat, Abdulaziz A. Al-Khedhairy, Nagendra Kumar Kaushik,