Enhanced photocatalytic performance of magnesium-lithium co-doped BiVO₄ and its degradation of methylene blue
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Doped and undoped-BiVO₄ samples with different elements (Li, Mg) and amounts were synthesized with a hydrothermal method. The synthesized samples were characterized using various techniques including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-Vis diffusion reflectance spectroscopy (UV-Vis DRS), andphotoluminescence (PL) spectroscopy. Photocatalytic activity of the samples was evaluated by measuring the degradation of methyl blue (MB) under visible light irradiation. The results indicated that the incorporation of Mg and Li into BiVO₄ caused lattice distortion, the presence of surface hydroxyl groups, a narrower band gap, and a reduced recombination ratio of photo-induced electron-hole pairs. Notably, the photocatalytic activity of Mg5%–Li5% co-doped BiVO₄ sample exhibited a significant improvement compared to that of undoped BiVO₄ sample.
Abstract
Doped and undoped-BiVO₄ samples with different elements (Li, Mg) and amounts were synthesized with a hydrothermal method. The synthesized samples were characterized using various techniques including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-Vis diffusion reflectance spectroscopy (UV-Vis DRS), andphotoluminescence (PL) spectroscopy. Photocatalytic activity of the samples was evaluated by measuring the degradation of methyl blue (MB) under visible light irradiation. The results indicated that the incorporation of Mg and Li into BiVO₄ caused lattice distortion, the presence of surface hydroxyl groups, a narrower band gap, and a reduced recombination ratio of photo-induced electron-hole pairs. Notably, the photocatalytic activity of Mg5%–Li5% co-doped BiVO₄ sample exhibited a significant improvement compared to that of undoped BiVO₄ sample.
참고문헌 (28)
- S. Sun, "Advanced chemical compositions and nanoarchitectures of bismuth based complex oxides for solar photocatalytic application", RSC Adv, 4, pp.47136~ (2014)
- J. R. Ran, "Earth-abundant cocatalysts for semi-conductor-based photocatalytic water splitting", Chem. Soc. Rev, 43, pp.7787~ (2014)
- K. Woan, "Photocatalytic carbon-nanotube-TiO2 composites", Adv. Mater, 21, pp.2233~ (2009)
- R. Venkatesan, "Mechanochemical synthesis of nanostructured BiVO4 and investigations of related features", Mat. Chem. Phys, 135(2-3), pp.842~ (2012)
- A. Kudo, "Heterogeneous photocatalyst materials for water splitting", Chem. Soc. Rev, 38, pp.253~ (2009)
- Y. Hu, "Facile synthesis of double cone-shaped Ag4V2O7", BiVO4 nanocomposites with enhanced visible light photocatalytic activity for environmental purification, 2017, pp.337, 172~
- M. Guo, "Enhanced photocatalytic activity of S-doped BiVO4 photocatalysts", RSC Adv, 5, pp.58633~ (2015)
- M. Wang, "Effective visible light-active boron and europium codoped BiVO4 synthesized by sol-gel method for photodegradion of methyl orange", J. Hazard. Mater, 262, pp.447~ (2013)
- S. P. Berglund, "Incorporation of Mo and W into nanostructured BiVO4 films for efficient photoelectrochemical water oxidation", Phys. Chem. Chem. Phys, 14, pp.7065~ (2012)
- W. J. Yin, "Doping properties of monoclinic BiVO4 studied by first-principles density-functional theory", Phys. Rev. B, 83, pp.155102~ (2011)
- Z. Zhao, "Electronic structure and optical properties of monoclinic clinobisvanite BiVO4", Phys. Chem. Chem. Phys, 13, pp.4746~ (2011)
- P. Wood, "Preparation and properties of pigmentary grade BiVO4 precipitated from aqueous solution", Ceram. Int, 30, pp.875~ (2004)
- J. B. Liu, "Hydrothermal preparation of BiVO4 powders", Mater. Sci. and Eng., B, 104, pp.36~ (2003)
- L. Shan, "Er3+, Yb3+ doping induced core-shell structured BiVO4 and near-infrared photocatalytic properties", J. Mol. Catal. A Chem, 416, pp.1~ (2016)
- J. Tian, "A Bi2WO6-based hybridphotocatalyst with broad spectrum photocatalytic properties under UV visible, and near-infrared irradiation", Adv. Mater, 25, pp.5075~ (2013)
- C. Hu, "VO2", TiO2 nanosponges asbinder-free electrodes for high-performance supercapacitors, 2015, pp.5, 16012~
- Y. Zhao, "Zn-doped TiO2 nanoparticles with high photocatalytic activity synthesized by hydrogen-oxygen diffusion flame", Appl. Catal. B : Environ, 140, pp.208~ (2008)
- J. Li, "A full-sunlight-driven photocatalyst with super long-persistent energy storage-ability", Sci. Rep, 3, pp.2409~ (2013)
- Q. Yu, "Synthesis and properties of boron doped ZnO nanorods on silicon substrate by low-temperature hydrothermal reaction", Appl. Surf. Sci, 257, pp.5984~ (2011)
- K. Ding, "Density functional theory study on the electronic and optical properties of three crystalline phases of BiVO4", Theor. Chem. Acc, 132, pp.1~ (2013)
- J. Ma, "The role of the isolated 6s states in BiVO4 on the electronic and atomic structures", Appl. Phys. Lett, 105, pp.172102~ (2014)
- W. J. Jo, "Phosphate doping into monoclinic BiVO4 for enhanced photoelectrochemical water oxidation activity", Angew. Chem, 124, pp.3201~ (2012)
- S. Gu, "Lanthanide ions Ce(III, IV)substituted for Bi in BiVO4 and its enhanced impact on visible light-driven photocatalytic activities", Catal. Sci. Technol, 6, pp.1870~ (2016)
- R. Asahi, "Visible-light photocatalysis in nitrogen-doped titanium oxides", Science, 293, pp.269~ (2001)
- A. Galembeck, "BiVO4 thin film preparation by metalorganic decomposition", Thin Solid Films, 365, pp.90~ (2000)
- J. W. Tang, "Photophysical and photocatalytic properties of AgInW2O8", J. Phys. Chem. B, 107, pp.14265~ (2003)
- H. Xu, "Preparation, characterization and photocatalytic activity of transition metal-loaded BiVO4", Mater. Sci. Eng. B, 147, pp.52~ (2008)
- R. A. Rajadhyaksha, "Effectiveness factors in Langmuir-Hinshelwood and general order kinetics", J. Catal, 7, pp.61~ (1976)