TY - JOUR
T1 - Facile post-synthesis and photocatalytic activity of N-doped ZnO-SBA-15
AU - Vo, Vien
AU - Tran Thi, Thu Phuong
AU - Kim, Ha Yeong
AU - Kim, Sung Jin
N1 - Funding Information:
Financial support from the National Research Foundation of Korea Grant funded by the Korean Government ( 20110001341 ) and the National Foundation for Science and Technology Development of Viet Nam (NAFOSTED, 104.03.2011.11 ) is gratefully acknowledged.
PY - 2014/3
Y1 - 2014/3
N2 - N-doped ZnO-SBA-15 materials (denoted as nN-xZnO-SBA-15, where n is number of urea treatments and x is the weight ratio of ZnO/(ZnO+SBA-15)) were successfully synthesized by a two-step procedure. First, xZnO-SBA-15 was prepared by impregnating SBA-15 with Zn(NO3)2, followed by calcinating at 550 C. In the second step, xZnO-SBA-15 was modified n times by doping nitrogen with the assistance of urea. The resulting nN-xZnO-SBA-15 materials prepared with various numbers of urea treatments were characterized by XRD, TEM, SEM, EDS, N2 adsorption/desorption at 77 K, diffuse reflectance UV-vis, and XPS. The results show that the nN-xZnO-SBA-15 maintains its ordered hexagonal mesostructure and exhibits light absorbance in the visible region. The nN-xZnO-SBA-15 samples were investigated with the photodegradation of methylene blue under visible light, and exhibited significant photocatalytic activity. The kinetics of the reaction obeyed the Langmuir-Hinshelwood model.
AB - N-doped ZnO-SBA-15 materials (denoted as nN-xZnO-SBA-15, where n is number of urea treatments and x is the weight ratio of ZnO/(ZnO+SBA-15)) were successfully synthesized by a two-step procedure. First, xZnO-SBA-15 was prepared by impregnating SBA-15 with Zn(NO3)2, followed by calcinating at 550 C. In the second step, xZnO-SBA-15 was modified n times by doping nitrogen with the assistance of urea. The resulting nN-xZnO-SBA-15 materials prepared with various numbers of urea treatments were characterized by XRD, TEM, SEM, EDS, N2 adsorption/desorption at 77 K, diffuse reflectance UV-vis, and XPS. The results show that the nN-xZnO-SBA-15 maintains its ordered hexagonal mesostructure and exhibits light absorbance in the visible region. The nN-xZnO-SBA-15 samples were investigated with the photodegradation of methylene blue under visible light, and exhibited significant photocatalytic activity. The kinetics of the reaction obeyed the Langmuir-Hinshelwood model.
KW - A: Nanostructures
KW - B: Semiconductors
KW - C: Sol-gel growth
KW - D: X-ray diffraction
KW - E: Optical properties
UR - http://www.scopus.com/inward/record.url?scp=84891634700&partnerID=8YFLogxK
U2 - 10.1016/j.jpcs.2013.11.011
DO - 10.1016/j.jpcs.2013.11.011
M3 - Article
AN - SCOPUS:84891634700
SN - 0022-3697
VL - 75
SP - 403
EP - 409
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 3
ER -