A novel templated synthesis of C/N-doped β-Bi2O3 nanosheets for synergistic rapid removal of 17α-ethynylestradiol by adsorption and photocatalytic degradation

Chen, Yu; Zhang, Yefei; Luo, Liang; Shi, Yingying; Wang, Shan; Li, Lingxin; Long, Yanju; Jiang, Fengzhi

doi:10.1016/j.ceramint.2017.10.173

Cited by 33 publications

(15 citation statements)

References 42 publications

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“…The positive shift in the T-CBO/A-BFO (1:1) was due to the increase in binding energy of O-mental in the heterojunction. The peaks at around 531.5 eV can be assigned to the chemisorbed oxygen [ 45 , 46 ], and the peak at 532.7 eV in the A-BFO suggested the formation of metal-OH groups on the surface [ 47 ]. In Figure 4 d, the T-CBO, A-BFO, and T-CBO/A-BFO (1:1) all showed peaks at around 158.7 eV and 164.0 eV, which can be assigned to Bi 4f 7/2 and Bi 4f 5/2 of Bi 3+ , respectively.…”

Section: Resultsmentioning

confidence: 99%

One Step Synthesis of Tetragonal-CuBi2O4/Amorphous-BiFeO3 Heterojunction with Improved Charge Separation and Enhanced Photocatalytic Properties

et al. 2020

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Tetragonal CuBi2O4/amorphous BiFeO3 (T-CBO/A-BFO) composites are prepared via a one-step solvothermal method at mild conditions. The T-CBO/A-BFO composites show expanded visible light absorption, suppressed charge recombination, and consequently improved photocatalytic activity than T-CBO or A-BFO alone. The T-CBO/A-BFO with an optimal T-CBO to A-BFO ratio of 1:1 demonstrates the lowest photoluminescence signal and highest photocatalytic activity. It shows a removal rate of 78.3% for the photodegradation of methylene orange under visible light irradiation for 1 h. XPS test after the cycle test revealed the reduction of Bi3+ during the photocatalytic reaction. Moreover, the as prepared T-CBO/A-BFO show fundamentally higher photocatalytic activity than their calcinated counterparts. The one-step synthesis is completed within 30 min and does not require post annealing process, which may be easily applied for the fast and cost-effective preparation of photoactive metal oxide heterojunctions.

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Section: Resultsmentioning

confidence: 99%

One Step Synthesis of Tetragonal-CuBi2O4/Amorphous-BiFeO3 Heterojunction with Improved Charge Separation and Enhanced Photocatalytic Properties

et al. 2020

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“…In the XRD pattern of CuBi 2 O 4 / β -Bi 2 O 3 (600 °C), except for the peaks indicating CuBi 2 O 4 , the diffraction peaks located at the 2 θ values of 27.66°, 32.86°, 46.32°, 55.44°, and 57.86°, can be indexed to the (201), (220), (222), (421), and (402) crystalline planes of tetragonal β -Bi 2 O 3 (JCPDS No. 27-0050) [ 22 , 25 ]. Moreover, there are no obvious carbon peaks from the XRD pattern of CuBi 2 O 4 / β -Bi 2 O 3 (600 °C), indicating the complete combustion of carbon in this calcination temperature [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

“…Some related studies suggest its activity could be improved through the synergistic effect with other metal oxide semiconductors [ 17 , 19 , 20 ]. Bi 2 O 3 , a visible light-responsive semiconductor material, is regarded as a promising photocatalyst for organic pollutant degradation [ 21 , 22 ]. This is mainly due to that the energy band gap (in the range from 2.4 to 3.2) of Bi 2 O 3 can be tuned by employing different synthesis techniques, such as sol gel, hydrothermal/solvothermal and solid-state decomposition methods [ 21 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Temperature-Program Assisted Synthesis of Novel Z-Scheme CuBi2O4/β-Bi2O3 Composite with Enhanced Visible Light Photocatalytic Performance

Chen

et al. 2018

Nanomaterials

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Novel Z-Scheme CuBi2O4/β-Bi2O3 composite photocatalysts with different mass ratios and calcination temperatures were firstly synthesized by the hydrothermal method following a temperature-programmed process. The morphology, crystal structure, and light absorption properties of the as-prepared samples were systematically characterized, and the composites exhibited enhanced photocatalytic activity toward diclofenac sodium (DS) degradation compared with CuBi2O4 and β-Bi2O3 under visible light irradiation. The optimal photocatalytic efficiency of the composite, achieved at the mass ratio of CuBi2O4 and β-Bi2O3 of 1:2.25 and the calcination temperature of 600 °C is 92.17%. After the seventh recycling of the composite, the degradation of DS can still reach 82.95%. The enhanced photocatalytic activity of CuBi2O4/β-Bi2O3 is closely related to OH•, h+ and O2•−, and the photocatalytic mechanism of CuBi2O4/β-Bi2O3 can be explained by the Z-Scheme theory.

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“…Nanomaterials derived from TiO 2 have been regarded as promising photocatalysts for hydrogen generation via water splitting and environmental purification since the ground-breaking report by Honda and Fujishima in 1972 [5]. Especially after Carey et al reported the first use of nano-TiO 2 to degrade polychlorobiphenyls under ultraviolet (UV) irradiation in 1976 [6], various metal oxide-based photocatalysts, including TiO 2 [7][8][9][10][11][12], ZnO [13][14][15][16], Bi 2 O 3 [17][18][19], Cu 2 O [20,21], Fe 2 O 3 [22,23], and NiO/Ni(OH) 2 [24,25] have been developed for the photocatalytic degradation of organic dyes and pollutants. However, most of the catalysts were metal-based, which pose a potential risk of secondary pollution to water bodies [26].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of “Boron-Doped” Carbon Dots and Their Application in Visible-Light-Driven Photocatalytic Degradation of Organic Dyes

Peng

Zhou

et al. 2020

Nanomaterials

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Carbon dots (C-dots) were facilely fabricated via a hydrothermal method and fully characterized. Our study shows that the as-synthesized C-dots are nontoxic, negatively charged spherical particles (average diameter 4.7 nm) with excellent water dispersion ability. Furthermore, the C-dots have a rich presence of surface functionalities such as hydroxyls and carboxyls as well as amines. The significance of the C-dots as highly efficient photocatalysts for rhodamine B (RhB) and methylene blue (MB) degradation was explored. The C-dots demonstrate excellent photocatalytic activity, achieving 100% of RhB and MB degradation within 170 min. The degradation rate constants for RhB and MB were 1.8 × 10−2 and 2.4 × 10−2 min−1, respectively. The photocatalytic degradation performances of the C-dots are comparable to those metal-based photocatalysts and generally better than previously reported C-dots photocatalysts. Collectively considering the excellent photocatalytic activity toward organic dye degradation, as well as the fact that they are facilely synthesized with no need of further doping, compositing, and tedious purification and separation, the C-dots fabricated in this work are demonstrated to be a promising alternative for pollutant degradation and environment protection.

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A novel templated synthesis of C/N-doped β-Bi2O3 nanosheets for synergistic rapid removal of 17α-ethynylestradiol by adsorption and photocatalytic degradation

Cited by 33 publications

References 42 publications

One Step Synthesis of Tetragonal-CuBi2O4/Amorphous-BiFeO3 Heterojunction with Improved Charge Separation and Enhanced Photocatalytic Properties

One Step Synthesis of Tetragonal-CuBi2O4/Amorphous-BiFeO3 Heterojunction with Improved Charge Separation and Enhanced Photocatalytic Properties

Temperature-Program Assisted Synthesis of Novel Z-Scheme CuBi2O4/β-Bi2O3 Composite with Enhanced Visible Light Photocatalytic Performance

Facile Synthesis of “Boron-Doped” Carbon Dots and Their Application in Visible-Light-Driven Photocatalytic Degradation of Organic Dyes

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