Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (10): 1055-1060.DOI: 10.15541/jim20140008
• Orginal Article • Previous Articles Next Articles
LI Xiao-Yan1,2, YAN Jian-Hui1,2, ZHANG Li1,2, ZHOU Ming-Jie2, LIU You-Nian1
Received:
2014-01-06
Revised:
2014-03-14
Published:
2014-10-20
Online:
2014-09-22
About author:
LI Xiao-Yan. E-mail: yuyicaocao@163.com
Supported by:
CLC Number:
LI Xiao-Yan, YAN Jian-Hui, ZHANG Li, ZHOU Ming-Jie, LIU You-Nian. Preparation and Photocatalytic Properties of Hollow Spheres-like Zn-doped CuO/CuAl2O4 Composite Photocatalysts[J]. Journal of Inorganic Materials, 2014, 29(10): 1055-1060.
Fig. 2 XRD patterns of Zn-doped CuO/CuAl2O4 samples calcined at 600℃ (a) 0wt% Zn-CuO/CuAl2O4; (b) 0.5wt% Zn-CuO/CuAl2O4; (c) 1wt% Zn- CuO/CuAl2O4; (d) 2wt% Zn-CuO/CuAl2O4
Element | Area 1 | Area 2 | ||
---|---|---|---|---|
wt% | at% | wt% | at% | |
O | 32.00 | 52.78 | 30.99 | 51.06 |
Al | 33.76 | 33.01 | 36.15 | 35.32 |
Cu | 33.30 | 13.83 | 32.03 | 13.29 |
Zn | 0.94 | 0.38 | 0.83 | 0.34 |
Table 1 EDS analyses of 1wt% Zn-CuO/CuAl2O4 samples
Element | Area 1 | Area 2 | ||
---|---|---|---|---|
wt% | at% | wt% | at% | |
O | 32.00 | 52.78 | 30.99 | 51.06 |
Al | 33.76 | 33.01 | 36.15 | 35.32 |
Cu | 33.30 | 13.83 | 32.03 | 13.29 |
Zn | 0.94 | 0.38 | 0.83 | 0.34 |
Fig. 3 SEM images of Zn microspheres (a, b), Zn microspheres calcined at 500℃(c), 0.5wt% Zn-CuO/CuAl2O4 samples (d, e) and HRTEM images of 0.5wt% Zn-CuO/CuAl2O4 samples (f)
Fig. 4 (A) N2 adsorption-desorption isotherms and (B) pore size distribution curves of Zn-doped CuO/CuAl2O4 samples (a) 0wt% Zn-CuO/CuAl2O4; (b) 0.5wt% Zn-CuO/CuAl2O4; (c) 1wt% Zn-CuO/CuAl2O4; (d) 2wt% Zn-CuO/CuAl2O4
Fig. 5 UV-Vis DRS spectra of Zn-doped CuO/CuAl2O4 samples (a) 0wt% Zn-CuO/CuAl2O4; (b) 0.5wt% Zn-CuO/CuAl2O4; (c) 1wt% Zn-CuO/CuAl2O4 calcined at 600℃
Sample | SBET/(m2·g-1) | Adsorption average pore width / nm | Pore volume /(cm3·g-1) |
---|---|---|---|
0.3wt% Zn-CuO/CuAl2O4 | 208.25 | 7.7 | 0.59 |
0.5wt% Zn-CuO/CuAl2O4 | 214.97 | 9.2 | 0.71 |
1wt% Zn-CuO/CuAl2O4 | 182.92 | 7.0 | 0.45 |
2wt% Zn-CuO/CuAl2O4 | 171.42 | 6.5 | 0.37 |
Table 2 Physical property of Zn-doped CuO/CuAl2O4 samples
Sample | SBET/(m2·g-1) | Adsorption average pore width / nm | Pore volume /(cm3·g-1) |
---|---|---|---|
0.3wt% Zn-CuO/CuAl2O4 | 208.25 | 7.7 | 0.59 |
0.5wt% Zn-CuO/CuAl2O4 | 214.97 | 9.2 | 0.71 |
1wt% Zn-CuO/CuAl2O4 | 182.92 | 7.0 | 0.45 |
2wt% Zn-CuO/CuAl2O4 | 171.42 | 6.5 | 0.37 |
Fig. 7 Effect of calcination temperatures on methyl orange degradation of 0.5wt% Zn-CuO/CuAl2O4 samples (a) 500℃; (b) 600℃; (c) 700℃; (d) 800℃; (e) 900℃
Fig. 8 Effect of Zn doped content on methyl orange degradation of Zn-CuO/CuAl2O4 samples (a) 0wt% Zn-CuO/CuAl2O4; (b) 0.3wt% Zn-CuO/CuAl2O4; (c) 0.5wt% Zn-CuO/CuAl2O4; (d) 1wt% Zn-CuO/CuAl2O4; (e) 2wt% Zn-CuO/ CuAl2O4 calcined at 600℃
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