Enhanced Photocatalytic Activity for Degradation of Methyl Orange over Silica-Titania
المؤلفون المشاركون
Zhou, Xuefei
Lin, Chunmian
Guo, Yaping
Zhang, Weifeng
Yang, Shaogui
Wang, Yajun
المصدر
العدد
المجلد 2011، العدد 2011 (31 ديسمبر/كانون الأول 2011)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2011-05-11
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
العلوم الهندسية و تكنولوجيا المعلومات
الكيمياء
هندسة مدنية
الملخص EN
Silica-modified titania (SMT) powders with different atomic ratios of silica to titanium (Rx) were successfully synthesized by a simple ultrasonic irradiation technique.
The prepared samples were characterized by X-ray diffraction (XRD), FT-IR spectroscopy, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and ultraviolet visible spectroscopy.
The specific surface area was measured according to BET theory.
Results indicate that the addition of silica to titania can suppress the crystalline size growth and the transformation of anatase phase to rutile phase of titania, enlarge specific surface area of the titania particles, and result in a blue shift of absorption edge compared to pure titania.
The photocatalytic activity of the SMT samples was evaluated by decolorizing methyl orange aqueous solutions under UV-visible light irradiation.
It was found in our study that this activity was affected by silica content, calcination temperature, H2SO4, and oxidants such as KIO4, (NH4)2S2O8 and H2O2.
The results reveal that the photocatalytic activity of 0.1-SMT catalyst is the best among all samples calcined at 550°C for 1 h and it is 1.56 times higher than that of Degussa P-25 titania, which is a widely used commercial TiO2 made by Germany Degussa company and has been most widely used in industry as photocatalyst, antiultraviolet product, and thermal stabilizer.
The optimal calcination temperature for preparation was 550°C.
The photocatalytic activity of SMT samples is significantly enhanced by H2SO4 solution treatment and oxidants.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Guo, Yaping& Yang, Shaogui& Zhou, Xuefei& Lin, Chunmian& Wang, Yajun& Zhang, Weifeng. 2011. Enhanced Photocatalytic Activity for Degradation of Methyl Orange over Silica-Titania. Journal of Nanomaterials،Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-461369
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Guo, Yaping…[et al.]. Enhanced Photocatalytic Activity for Degradation of Methyl Orange over Silica-Titania. Journal of Nanomaterials No. 2011 (2011), pp.1-9.
https://search.emarefa.net/detail/BIM-461369
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Guo, Yaping& Yang, Shaogui& Zhou, Xuefei& Lin, Chunmian& Wang, Yajun& Zhang, Weifeng. Enhanced Photocatalytic Activity for Degradation of Methyl Orange over Silica-Titania. Journal of Nanomaterials. 2011. Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-461369
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-461369
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر