|
1
|
Sun X, Liu H, Yang J, Fu M, Tan M, Yin G, Shi W, Huang H, Shi J. C
3
N
4
/Cu/ZnFe
2
O
4
Ternary Nanocomposites: Removal of Environmental Pollutants by the Synergy of Physical Adsorption and Photocatalysis. ChemistrySelect 2022. [DOI: 10.1002/slct.202103959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xiaorui Sun
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
- Chongqing Key Laboratory of Inorganic Special Functional Materials Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| | - Hongfu Liu
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| | - Jia Yang
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
- Chongqing Key Laboratory of Inorganic Special Functional Materials Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| | - Mingyan Fu
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| | - Mingdan Tan
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| | - Guihua Yin
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| | - Wenbing Shi
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
- Chongqing Key Laboratory of Inorganic Special Functional Materials Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| | - Huisheng Huang
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
- Chongqing Key Laboratory of Inorganic Special Functional Materials Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| | - Jianwei Shi
- College of Chemistry and Chemical Engineering Yangtze Normal University, Fuling Chongqing 408100 P.R.China
- Chongqing Key Laboratory of Inorganic Special Functional Materials Yangtze Normal University, Fuling Chongqing 408100 P.R.China
| |
Collapse
|
|
2
|
Fu M, Yang J, Sun X, Tian W, Yin G, Tian S, Tan M, Liu H, Xing X, Huang H. Photo-Fenton Process over an Fe-Free 3%-CuO/Sr 0.76Ce 0.16WO 4 Photocatalyst under Simulated Sunlight. ACS OMEGA 2021; 6:27297-27304. [PMID: 34693150 PMCID: PMC8529691 DOI: 10.1021/acsomega.1c04107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 10/01/2021] [Indexed: 06/13/2023]
Abstract
Photo-Fenton is a promising photocatalytic technology that utilizes sunlight. Herein, an Fe-free 3%-CuO/Sr0.76Ce0.16WO4 photocatalyst was synthesized to apply simulated wastewater degradation via a photo-Fenton process under simulated sunlight. The photodegradation efficiency of RhB solution over the 3%-CuO/Sr0.76Ce0.16WO4 photocatalyst is 93.2% in the first 3 h; its photocatalytic efficiency remains at 91.6% even after three cycle experiments. The kinetic constant of the 3%-CuO/Sr0.76Ce0.16WO4 photocatalyst is 0.0127 min-1, which is 2.8-fold that of an intrinsic Sr0.76Ce0.16WO4 sample. The experiment of radical quenching revealed that the photogenerated electrons and holes are transferred to CuO to form hydroxyl radicals. Besides, the photocatalyst was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), diffused reflectance spectroscopy (DRS), and X-ray photoelectron spectroscopy (XPS) measurements. It has some reference significance for the design of iron-free photocatalysts.
Collapse
Affiliation(s)
- Mingyan Fu
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Jia Yang
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Xiaorui Sun
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Wei Tian
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Guihua Yin
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Sheng Tian
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Mingdan Tan
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Hongfu Liu
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Xiaofeng Xing
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Huisheng Huang
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| |
Collapse
|
|
3
|
Yang J, Fu M, Tan M, Tian Y, Sun X, Huang H. Photocatalytic Reduction of Cr(VI) on a 3.0% Au/Sr 0.70Ce 0.20WO 4 Photocatalyst. ACS OMEGA 2020; 5:26755-26762. [PMID: 33111002 PMCID: PMC7581225 DOI: 10.1021/acsomega.0c03743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 09/28/2020] [Indexed: 06/11/2023]
Abstract
Herein, a 3.0%-Au/Sr0.70Ce0.20WO4 sample was prepared for the photocatalytic reduction of the Cr2O7 2- ion. The photocatalyst was characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and ultraviolet-visible diffuse reflectance spectra. The Sr0.70Ce0.20WO4 sample presented a photocatalytic reduction activity that is better than those of the Ce-doped sample and the intrinsic sample. Thereafter, different metal elements, Cu, Ag, Au, and Pt, were used as cocatalysts, which were loaded on the Sr0.70Ce0.20WO4 sample. The 3.0%-Au/Sr0.70Ce0.20WO4 photocatalyst showed optimal photocatalytic reduction activity in a 8 vol % methanol solution (pH = 7) under visible light irradiation. The kinetic constant of the optimal one is 0.0039 min-1, which is 1.86 times that of the Sr0.70Ce0.20WO4 sample. The photocatalyst is stable enough after a 24 h photocatalytic experiment.
Collapse
Affiliation(s)
- Jia Yang
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Mingyan Fu
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Mingdan Tan
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Yanling Tian
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Xiaorui Sun
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| | - Huisheng Huang
- Chongqing Key Laboratory
of Inorganic Special Functional Materials, College of Chemistry and
Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China
| |
Collapse
|
|
4
|
The Improvement of Coralline-Like ZnGa2O4 by Cocatalysts for the Photocatalytic Degradation of Rhodamine B. Catalysts 2020. [DOI: 10.3390/catal10020221] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
To date, various methods have been used to synthesize ZnGa2O4 material to promote photodegradation performance. However, cocatalysts, which usually play a crucial role in the photocatalyst system, have not been studied extensively in photocatalytic degradation reactions. In this paper, ZnGa2O4 semiconducting material was synthesized by a traditional high-temperature solid-state reaction. The as-prepared powder was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet–visible diffused reflectance spectroscopy. The results indicate that the as-prepared sample is a highly crystallized granular sample with a bandgap of 4.44 eV and a uniform particle size distribution. Density functional theory (DFT) was utilized to calculate the electronic structure of ZnGa2O4. The valence bands and conduction bands were chiefly composed of O 2p atomic orbitals and the hybridization orbitals of Ga 4s4p and Zn4s4p, respectively. The photocatalytic performance was tested via the decomposition of rhodamine B (RhB) under the irradiation of ultraviolet light. Cu, Ag, Au, Ni, Pt, and Pd cocatalysts were loaded on the ZnGa2O4 photocatalyst by a photodeposition method. The relatively optimal cocatalyst of ZnGa2O4 in the photocatalytic degradation reaction is Au. Thereafter, the effect of loading different usage amounts of the Au cocatalyst for the photodegradation of the ZnGa2O4 photocatalyst was studied in detail. The experimental results displayed that the optimum photodegradation activity was confirmed with the 3 wt% Au/ZnGa2O4 sample, which was 14.1 times more than the unloaded photocatalyst. The maximum photocatalytic degradation ratio of RhB was 96.7%, with 180 min under ultraviolet light.
Collapse
|