J. Mater. Sci. Technol. ›› 2018, Vol. 34 ›› Issue (10): 1891-1901.DOI: 10.1016/j.jmst.2018.01.014
Special Issue: Nanomaterials 2018; Composites 2018
• Orginal Article • Previous Articles Next Articles
Mahsa Pirhashemi, Aziz Habibi-Yangjeh()
Received:
2017-11-07
Revised:
2017-12-14
Accepted:
2018-01-09
Online:
2018-10-05
Published:
2018-11-01
Mahsa Pirhashemi, Aziz Habibi-Yangjeh. Fabrication of novel ZnO/MnWO4 nanocomposites with p-n heterojunction: Visible-light-induced photocatalysts with substantially improved activity and durability[J]. J. Mater. Sci. Technol., 2018, 34(10): 1891-1901.
Fig. 5. (a) UV-vis DRS for the ZnO, MnWO4, and ZnO/MnWO4 (30%) nanocomposites with different weight percentages of manganese tungstate. (b) Plots of (αhν)2versus hv for the different samples.
Fig. 6. (a) Photodegradation of RhB over the ZnO, MnWO4, and ZnO/MnWO4 nanocomposites with different weight percentages of manganese tungstate. UV-vis spectra for degradation of RhB over the (b) ZnO, (c) MnWO4, and (d) ZnO/MnWO4 (30%) nanocomposite.
Fig. 7. (a) Degradation rate constants of RhB over the ZnO, MnWO4, and ZnO/MnWO4 nanocomposites with different weight percentages of manganese tungstate. (b) PL spectra for ZnO, MnWO4, ZnO/MnWO4 (30%) and ZnO/MnWO4 (40%) samples. (c) Nitrogen gas adsorption-desorption data over the ZnO, MnWO4, and ZnO/MnWO4 nanocomposites with different weight percentages of manganese tungstate.
Photocatalyst | Surface area (m2 g-1) | Mean pore diameter (nm) | Total pore volume (cm3 g-1) |
---|---|---|---|
ZnO | 5.18 | 12.54 | 0.0162 |
MnWO4 | 5.97 | 12.59 | 0.0188 |
ZnO/MnWO4 (10%) | 12.0 | 44.01 | 0.1322 |
ZnO/MnWO4 (20%) | 13.7 | 46.92 | 0.1602 |
ZnO/MnWO4 (30%) | 25.1 | 48.20 | 0.2473 |
ZnO/MnWO4 (40%) | 26.1 | 47.61 | 0.2581 |
Table 1 Texture properties of the ZnO, MnWO4, and ZnO/MnWO4 nanocomposites with different weight percentages of manganese tungstate.
Photocatalyst | Surface area (m2 g-1) | Mean pore diameter (nm) | Total pore volume (cm3 g-1) |
---|---|---|---|
ZnO | 5.18 | 12.54 | 0.0162 |
MnWO4 | 5.97 | 12.59 | 0.0188 |
ZnO/MnWO4 (10%) | 12.0 | 44.01 | 0.1322 |
ZnO/MnWO4 (20%) | 13.7 | 46.92 | 0.1602 |
ZnO/MnWO4 (30%) | 25.1 | 48.20 | 0.2473 |
ZnO/MnWO4 (40%) | 26.1 | 47.61 | 0.2581 |
Fig. 10. (a) Degradation rate constants of RhB over the ZnO/MnWO4 (30%) nanocomposite calcined at different temperatures. (b) PL spectra, (c) Nitrogen gas adsorption-desorption data for the ZnO/MnWO4 (30%) nanocomposite calcined at 250, 450, and 550 °C.
Photocatalyst | Surface area (m2 g-1) | Mean pore diameter (nm) | Total pore volume (cm3 g-1) |
---|---|---|---|
Calcined at 250 °C | 18.8 | 43.58 | 0.2180 |
Calcined at 450 °C | 25.1 | 48.20 | 0.2473 |
Calcined at 550 °C | 22.1 | 46.31 | 0.2216 |
Table 2 Texture properties of the ZnO/MnWO4 (30%) nanocomposite calcined at 250, 450, and 550 °C.
Photocatalyst | Surface area (m2 g-1) | Mean pore diameter (nm) | Total pore volume (cm3 g-1) |
---|---|---|---|
Calcined at 250 °C | 18.8 | 43.58 | 0.2180 |
Calcined at 450 °C | 25.1 | 48.20 | 0.2473 |
Calcined at 550 °C | 22.1 | 46.31 | 0.2216 |
Fig. 12. Photodegradations of RhB, MB, MO, and fuchsine over the ZnO, MnWO4, and ZnO/MnWO4 (30%) nanocomposite along with the adsorption data in dark over this nanocomposite.
|
[1] | Zhongfu Li, Zhaohui Wu, Rongan He, Long Wan, Shiying Zhang. In2O3-x(OH)y/Bi2MoO6 S-scheme heterojunction for enhanced photocatalytic performance [J]. J. Mater. Sci. Technol., 2020, 56(0): 151-161. |
[2] | Lu Zhang, Yuanyuan Cui, Fengli Yang, Quan Zhang, Juhua Zhang, Mengting Cao, Wei-Lin Dai. Electroless-hydrothermal construction of nickel bridged nickel sulfide@mesoporous carbon nitride hybrids for highly efficient noble metal-free photocatalytic H2 production [J]. J. Mater. Sci. Technol., 2020, 45(0): 176-186. |
[3] | Jing Xu, Zhouping Wang, Yongfa Zhu. Highly efficient visible photocatalytic disinfection and degradation performances of microtubular nanoporous g-C3N4 via hierarchical construction and defects engineering [J]. J. Mater. Sci. Technol., 2020, 49(0): 133-143. |
[4] | Emese Lantos, László Mérai, Ágota Deák, Juan Gómez-Pérez, Dániel Sebők, Imre Dékány, Zoltán Kónya, László Janovák. Preparation of sulfur hydrophobized plasmonic photocatalyst towards durable superhydrophobic coating material [J]. J. Mater. Sci. Technol., 2020, 41(0): 159-167. |
[5] | Xintong Liu, Shaonan Gu, Yanjun Zhao, Guowei Zhou, Wenjun Li. BiVO4, Bi2WO6 and Bi2MoO6 photocatalysis: A brief review [J]. J. Mater. Sci. Technol., 2020, 56(0): 45-68. |
[6] | Yang Li, Xin Li, Huaiwu Zhang, Jiajie Fan, Quanjun Xiang. Design and application of active sites in g-C3N4-based photocatalysts [J]. J. Mater. Sci. Technol., 2020, 56(0): 69-88. |
[7] | Mir Ghasem Hosseini, Pariya Yardani Sefidi, Ahmet Musap Mert, Solen Kinayyigit. Investigation of solar-induced photoelectrochemical water splitting and photocatalytic dye removal activities of camphor sulfonic acid doped polyaniline -WO3- MWCNT ternary nanocomposite [J]. J. Mater. Sci. Technol., 2020, 38(0): 7-18. |
[8] | Yingzhi Chen, Dongjian Jiang, Zhengqi Gong, Qinglin Li, Ranran Shi, Zexi Yang, Ziyi Lei, Jingyuan Li, Lu-Ning Wang. Visible-light responsive organic nano-heterostructured photocatalysts for environmental remediation and H2 generation [J]. J. Mater. Sci. Technol., 2020, 38(0): 93-106. |
[9] | Shuang Gao, Weiyi Yang, Jun Xiao, Bo Li, Qi Li. Creation of passivated Nb/N p-n co-doped ZnO nanoparticles and their enhanced photocatalytic performance under visible light illumination [J]. J. Mater. Sci. Technol., 2019, 35(4): 610-614. |
[10] | Huaqiang Zhuang, Wentao Xu, Liqin Lin, Mianli Huang, Miaoqiong Xu, Shaoyun Chen, Zhenping Cai. Construction of one dimensional ZnWO4@SnWO4 core-shell heterostructure for boosted photocatalytic performance [J]. J. Mater. Sci. Technol., 2019, 35(10): 2312-2318. |
[11] | Milad Jourshabani, Zahra Shariatinia, Alireza Badiei. High efficiency visible-light-driven Fe2O3-xSx/S-doped g-C3N4 heterojunction photocatalysts: Direct Z-scheme mechanism [J]. J. Mater. Sci. Technol., 2018, 34(9): 1511-1525. |
[12] | Mitra Mousavi, Aziz Habibi-Yangjeh, Davod Seifzadeh. Novel ternary g-C3N4/Fe3O4/MnWO4 nanocomposites: Synthesis, characterization, and visible-light photocatalytic performance for environmental purposes [J]. J. Mater. Sci. Technol., 2018, 34(9): 1638-1651. |
[13] | Chang Liu, Xiang Zhu, Peng Wang, Yisen Zhao, Yongqing Ma. Defects and interface states related photocatalytic properties in reduced and subsequently nitridized Fe3O4/TiO2 [J]. J. Mater. Sci. Technol., 2018, 34(6): 931-941. |
[14] | Qian Yan, Gui-Fang Huang, Dong-Feng Li, Ming Zhang, An-Lian Pan, Wei-Qing Huang. Facile synthesis and superior photocatalytic and electrocatalytic performances of porous B-doped g-C3N4 nanosheets [J]. J. Mater. Sci. Technol., 2018, 34(12): 2515-2520. |
[15] | Jun Xiao, Weiyi Yang, Shuang Gao, Caixia Sun, Qi Li. Fabrication ofultrafine ZnFe2O4 nanoparticles for efficient photocatalytic reduction CO2 under visible light illumination [J]. J. Mater. Sci. Technol., 2018, 34(12): 2331-2336. |
Viewed | ||||||
Full text |
|
|||||
Abstract |
|
|||||