کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6454552 1418817 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of exfoliation and surface deposition of MnOx species in g-C3N4: Toluene photo-degradation under UV and visible light
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Effect of exfoliation and surface deposition of MnOx species in g-C3N4: Toluene photo-degradation under UV and visible light
چکیده انگلیسی


- Modification of g-C3N4 by surface deposition of MnOx and/or exfoliation.
- Study of the wavelength dependence of the photo-degradation of toluene.
- Analysis of photoactivity by means of the quantum efficiency parameter.
- Interpretation of the catalytic importance of the g-C3N4 modifications.

A relatively low surface area graphitic carbon nitride produced by a standard melamine calcination procedure was subjected to an exfoliation process and/or surface deposition of Mn-containing species. The resulting catalysts were characterized using X-ray diffraction and photoelectron spectroscopies, transmission electron microscopy, UV-vis and infrared spectroscopies, and porosimetry. The photocatalytic properties of the materials were tested in the gas-phase degradation of toluene under UV, visible and Sunlight-type illumination and their performance assessed through the measurement of the materials optical properties and subsequent calculation of the true quantum efficiency. The numerical analysis of the efficiency parameter evolution throughout the above mentioned carbon nitride samples provides quantitative estimation of the catalytic effect resulting from the exfoliation process and/or the surface deposition of Mn-containing species. Such analysis allows thus to compare the activity significance of each one of the carbon nitride modifications explored as well as the synergistic effect originated by the combined action of such modifications.

161

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 203, April 2017, Pages 663-672
نویسندگان
, , , ,