One-step synthesis of Mn-doped MIL-53(Fe) for synergistically enhanced generation of sulfate radicals towards tetracycline degradation

Yu, Jianshe; Cao, Jian; Yang, Zhen; Xiong, Weiping; Xu, Zhiwei; Song, Peipei; Jia, Meiying; Sun, Saiwu; Zhang, Yanru; Zhu, Juan

doi:10.1016/j.jcis.2020.07.045

Cited by 83 publications

(28 citation statements)

References 61 publications

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“…1(a) shows that the size of the MIL-53(Fe) particles is relatively uniform, the surface is smooth and dispersed, and the shape is an octahedral prism structure with sharp ends at the middle. 22 As shown in Fig. 1(b), MIL-53(Fe)/GO is no longer an angular octahedron, but still maintains the polyhedral structure of MIL-53(Fe), along with crystal size reduction.…”

Section: Resultsmentioning

confidence: 90%

Optimization of the adsorption and removal of Sb(iii) by MIL-53(Fe)/GO using response surface methodology

et al. 2022

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Section: Resultsmentioning

confidence: 90%

Optimization of the adsorption and removal of Sb(iii) by MIL-53(Fe)/GO using response surface methodology

et al. 2022

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“…Figure c gives the degradation effect of the photocatalyst on MG at different pH values (3.0, 5.0, 7.0, and 9.0). The results manifest that when the pH values vary, the removal efficiency of MG increases continuously, indicating that MIL-53(Fe)/Sn 3 O 4 -5 is effective in a wide pH range . As the pH continues to increase (from 3.0 to 9.0), the degradation efficiency of MG is found to increase.…”

Section: Resultsmentioning

confidence: 99%

Energy-Efficient MIL-53(Fe)/Sn₃O₄ Nanosheet Photocatalysts for Visible-Light Degradation of Toxic Organics in Wastewater

Yuan,

Zhang,

et al. 2023

ACS Appl. Nano Mater.

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The fabrication of photocatalysts with preferable degradation ability is critical to purify wastewater. MIL-53(Fe), as a representative Fe-based metal–organic framework (Fe-MOF), has been widely used in photocatalysis due to its excellent intrinsic characteristics. However, the inadequate electron number in MIL-53(Fe) has restricted the ability of photodegradation of organic pollutants. Herein, desirable, energy-efficient, and environmentally friendly MIL-53(Fe)/Sn3O4 nanosheet photocatalysts were first constructed by the solvothermal method. The characterization results indicated that the MIL-53(Fe)/Sn3O4-5 (5 wt % Sn3O4) catalyst exhibited optimal photoelectric properties and maintained a relatively regular morphology. Moreover, the prepared MIL-53(Fe)/Sn3O4-5 exhibited preferable photodegradation ability for dyes and antibiotics under visible light, and the maximum photodegradation capacity for malachite green, methylene blue, tetracycline, ciprofloxacin, and ofloxacin could reach 96.9, 88.2, 70.3, 83.5, and 88.1%, respectively. The initial pH, photocatalyst dosage, and initial concentration were comprehensively investigated for degrading malachite green. In addition, we also explored the prepared catalyst for the removal of malachite green from different actual wastewater samples. After three cycles, the degradation efficiency of malachite green by MIL-53(Fe)/Sn3O4-5 decreased very little, exhibiting good reuse performance. The enhanced photodegradation efficiency of MIL-53(Fe)/Sn3O4-5 could be attributed to the construction of heterojunctions derived from a compact joint interface between Sn3O4 and Fe-MOF, which expedited the separation ability of photogenerated carriers and broadened the visible response range. The active species trapping experiments and electron spin-resonance results determined that many active species (h+, •OH, and •O2 –) were involved in the photocatalytic process. Correspondingly, a convincible photodegradation mechanism between Sn3O4 and MIL-53(Fe) was proposed according to the experimental results. This study demonstrates that the fabricated Sn3O4 and MOF composites can provide a feasible solution for the purification of wastewater.

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“…Gradually, the attack of SO 4 ·− and OH· resulted in the fracture of cyclic hydrocarbon structure to form the product P10 ( m/z = 283). [ 53 ] In Pathway II, the TC molecule was attacked by SO 4 ·− and OH· to generate its dealkylation product P2 ( m/z = 437), [ 54 ] which was further dehydrated to produce P5 ( m/z = 399). The ring opening reaction lead P5 to form P8 ( m/z = 315) and P11 ( m/z = 234).…”

Section: Resultsmentioning

confidence: 99%

“…•− and OH• to generate its dealkylation product P2 (m/z = 437), [54] which was further dehydrated to produce P5 (m/z = 399). The ring opening reaction lead P5 to form P8 (m/z = 315) and P11 (m/z = 234).…”

Section: Proposed Degradation Pathway Of Tc By Magnetic Mno 2 @Pollen...mentioning

confidence: 99%

Biotemplated Shell Micromotors for Efficient Degradation of Antibiotics via Enhanced Peroxymonosulfate Activation

Wang

Hong

2022

Adv Materials Inter

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Self‐propelled magnetic MnO2@pollen micromotors have been developed as active heterogeneous catalysts of peroxymonosulfate (PMS) activation for efficient degradation of antibiotics. The MnO2 nanosheets (NSs) and Fe3O4 nanoparticles (NPs) are constructed on hollow pollens with small openings, endowing the natural materials with multifunctional properties. MnO2 NSs can decompose H2O2 to provide propulsion for micromotor movement, and also cooperate with Fe3O4 NPs to activate PMS to produce active free radicals SO4·−. Together with the OH· generated by Fe3O4 NPs and H2O2, the prepared micromotor catalyst can realize the degradation of tetracycline (TC) within several minutes. The self‐propulsion and abundant bubble formation cause effective fluid mixing and intensification of mass transfer, making up the low diffusivity defect of traditional heterogeneous catalysts. Moreover, the magnetic properties lay a foundation for the long‐range magnetic control and reutilization of heterogeneous catalysts, avoiding wastage and secondary contamination. The proposed self‐propelled pollen micromotors provide a highly efficient, economic, and environmentally friendly platform for the degradation of antibiotics.

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One-step synthesis of Mn-doped MIL-53(Fe) for synergistically enhanced generation of sulfate radicals towards tetracycline degradation

Cited by 83 publications

References 61 publications

Optimization of the adsorption and removal of Sb(iii) by MIL-53(Fe)/GO using response surface methodology

Optimization of the adsorption and removal of Sb(iii) by MIL-53(Fe)/GO using response surface methodology

Energy-Efficient MIL-53(Fe)/Sn₃O₄ Nanosheet Photocatalysts for Visible-Light Degradation of Toxic Organics in Wastewater

Biotemplated Shell Micromotors for Efficient Degradation of Antibiotics via Enhanced Peroxymonosulfate Activation

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One-step synthesis of Mn-doped MIL-53(Fe) for synergistically enhanced generation of sulfate radicals towards tetracycline degradation

Cited by 83 publications

References 61 publications

Optimization of the adsorption and removal of Sb(iii) by MIL-53(Fe)/GO using response surface methodology

Optimization of the adsorption and removal of Sb(iii) by MIL-53(Fe)/GO using response surface methodology

Energy-Efficient MIL-53(Fe)/Sn3O4 Nanosheet Photocatalysts for Visible-Light Degradation of Toxic Organics in Wastewater

Biotemplated Shell Micromotors for Efficient Degradation of Antibiotics via Enhanced Peroxymonosulfate Activation

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Energy-Efficient MIL-53(Fe)/Sn₃O₄ Nanosheet Photocatalysts for Visible-Light Degradation of Toxic Organics in Wastewater