Highly Efficient Photocatalytic Hydrogen on CoSTiO2 Photocatalysts from Aqueous Methanol Solution
المؤلفون المشاركون
Niu, Yu
Li, Fuying
Yang, Kai
Wang, Renzhang
Wu, Qiyou
Xu, Peijing
المصدر
International Journal of Photoenergy
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-6، 6ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-09-16
دولة النشر
مصر
عدد الصفحات
6
التخصصات الرئيسية
الملخص EN
The photocatalyzed water splitting reaction in aqueous methanol solution is an efficient preparation method for hydrogen and methanal under mild conditions.
In this work, metal sulfide-loaded TiO2 photocatalysts for hydrogen and methanol production were synthesized by hydrothermal method (180°C/12 h) and characterized by X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX).
The crystal structures of the samples are the typical anatase phase of TiO2 and exhibit a spherical morphology.
When TiO2 was loaded with CoS, ZnS, and Bi2S3, respectively, the resulting catalysts showed photocatalytic activities for water decomposition to hydrogen in aqueous methanol solution under 300 W Xe lamp irradiation.
Among the photocatalysts with various compositions, the 20 wt% CoS/TiO2 sample with a 2.1 eV band gap showed the maximum photocatalytic activity for the photocatalytic reaction, which indicated that CoS improved the separation ratio of photoexcited electrons and holes.
The enhanced activity can be attributed to the intimate junctions that are formed between CoS and TiO2, which can reduce the electron-hole recombination.
The production rate of hydrogen with 20 wt% CoS/TiO2 photocatalyst was about 5.6 mmol/g/h, which was 67 times higher than that of pure TiO2.
The formation rate of HCHO was 1.9 mmol/g/h with 98.7% selectivity.
Moreover, the CoS/TiO2 photocatalyst demonstrated good reusability and stability.
In the present study, it is demonstrated that CoS can act as an effective cocatalyst to enhance the photocatalytic hydrogen and methanal production activity of TiO2.
The highly improved performance of the CoS/TiO2 composite was mainly ascribed to the efficient charge separation.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Niu, Yu& Li, Fuying& Yang, Kai& Wu, Qiyou& Xu, Peijing& Wang, Renzhang. 2018. Highly Efficient Photocatalytic Hydrogen on CoSTiO2 Photocatalysts from Aqueous Methanol Solution. International Journal of Photoenergy،Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1174435
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Niu, Yu…[et al.]. Highly Efficient Photocatalytic Hydrogen on CoSTiO2 Photocatalysts from Aqueous Methanol Solution. International Journal of Photoenergy No. 2018 (2018), pp.1-6.
https://search.emarefa.net/detail/BIM-1174435
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Niu, Yu& Li, Fuying& Yang, Kai& Wu, Qiyou& Xu, Peijing& Wang, Renzhang. Highly Efficient Photocatalytic Hydrogen on CoSTiO2 Photocatalysts from Aqueous Methanol Solution. International Journal of Photoenergy. 2018. Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1174435
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1174435
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