Photocatalytic debromination enhancement of Ph-C≡C-Cu by Fe3O4 modification

Tian, Meng; Liu, Ya‐Ge; Hou, Jiawei; Jing, Biyun; Zhang, Yuanyuan; Yaoqian, MU; Sun, Xiao; Jiang, Haiying

doi:10.1016/j.apcatb.2023.122866

Cited by 14 publications

(10 citation statements)

References 46 publications

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“…When the pH reached 10.03, the Fe 2p 3/2 peak for Fe 3 O 4 could be deconvoluted into two peaks (710.9 and 712.7 eV) attributed to Fe(II) octahedral and Fe(III) octahedral, and the full width at half-maximum (FWHM) for Fe 2p 3/2 was 4 eV. Furthermore, the weak satellite peak observed near the binding energy of 719.0 eV belongs to Fe 3+ , which was similar to the results of Tian’s study . This indicated that with increasing pH, the Fe element transformed from a single Fe 3+ to Fe 2+ and Fe 3+ coexisting on the sample surface.…”

Section: Resultssupporting

confidence: 84%

“…Furthermore, the weak satellite peak observed near the binding energy of 719.0 eV belongs to Fe 3+ , which was similar to the results of Tian's study. 34 This indicated that with increasing pH, the Fe element transformed from a single Fe 3+ to Fe 2+ and Fe 3+ coexisting on the sample surface. The absorption peak of Al 2p appeared at 75.0 eV (Figure 2b), indicating the presence of the Al−O bond, but the absorption peak was affected by noise due to the low content.…”

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confidence: 93%

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Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al–Fe₃O₄ as Fenton-like Catalysts for the Efficient Degradation of Tetracycline

Teng,

Jiang,

Shi

et al. 2023

Langmuir

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In recent years, the development of environmentally friendly solid catalysts derived from sludge for the efficient removal of pollutants from wastewater has triggered widespread attention. Acid mine drainage (AMD) sludge is a waste produced in the process of acid mine wastewater treatment and contains multitudes of valuable metal resources. Hence it provides the original conditions for the synthesis of metal-based Fenton catalysts. In this article, the Fenton-like catalyst Al−Fe 3 O 4 derived from AMD sludge was first synthesized by acid leaching coprecipitation methods, and the relationship among catalyst properties and pH, growth temperature, and growth time during coprecipitation was explored. Transmission electron microscope (TEM)/vibrating sample magnetometer (VSM)/particulate size description analyzer (DLS) results showed that the Al−Fe 3 O 4 catalyst with high purity, large particle size, and strong magnetic properties was obtained under the conditions of pH 10, reaction temperature 60 °C, and growth for 45 min. In addition, the introduction of Al active sites promoted the activation of H 2 O 2 and improved the catalytic activity of Al− Fe 3 O 4 , and the degradation efficiency of tetracycline was up to 93.9% within 60 min, which was 1.94 times that of pure Fe 3 O 4 . Moreover, Al−Fe 3 O 4 exhibited excellent recyclability after four adsorption−desorption cycles. Hence, this study is expected to promote the resource utilization of industrial sludge and provide a new idea for the rapid removal of TC from aqueous solution.

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Section: Resultssupporting

confidence: 84%

mentioning

confidence: 93%

Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al–Fe₃O₄ as Fenton-like Catalysts for the Efficient Degradation of Tetracycline

Teng,

Jiang,

Shi

et al. 2023

Langmuir

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“…The three peaks at 6.1, 9.1, 12.4, and 17.5° are attributed to the (100), (001), (101), and (010) planes of PhC 2 Cu. The above results aligned well with Cambridge Crystallographic Data Centre (CCDC-242490) data for PhC 2 Cu. , No characteristic peaks belonging to TiO 2 are observed (the successful loading of TiO 2 is confirmed by transmission electron microscopy (TEM) analysis as stated below). Pure TiO 2 was also prepared by TBOT hydrolysis under the same conditions without the addition of PhC 2 Cu.…”

Section: Resultsmentioning

confidence: 99%

“…19 Therefore, it is promising that PhC could work as an efficient photocatalyst for imine synthesis due to its capability to generate e − and • O 2− active species. Up to date, several works have been reported on PhC 2 Cu modification to improve its photocatalytic performance in wastewater treatment, including Fe-doping for methyl orange degradation, 20 precious metal (Ag) deposition for the reduction of hexavalent chromium, 21 Fe 3 O 4 modification for hexabromobenzene degradation, 22 and Z-scheme formation with Bi 2 WO 6 and UiO-66-NH 2 for 2,4,6-TCP degradation and norfloxacin photodegradation. 23,24 The enhanced photocatalytic performance was attributed to the improved efficiency of hole/electron separation and the generation of • O 2− .…”

Section: Introductionmentioning

confidence: 99%

Copper Phenylacetylide and TiO₂ Modification for an Efficient Visible-Light-Driven Oxidative Coupling of Amines

Yu,

Zhou,

Zhou

et al. 2024

ACS Appl. Mater. Interfaces

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The selective oxidation of amines to imines under mild conditions has attracted much attention. Our study reveals that copper phenylacetylide (PhC 2 Cu) could serve as an efficient photocatalyst for imine synthesis under visible-light irradiation (>400 nm). Utilizing benzylamine as a model reactant, PhC 2 Cu achieves an imine yield of 50.4%, which is 5 times higher than that of P25 under the same conditions and comparable to the yield obtained by the 3 wt % Au/P25 photocatalyst (55.4%). Further loading 3.9 nm TiO 2 onto PhC 2 Cu through tetrabutyl titanate hydrolysis increases the imine yield to 84.7%, with a Ti:Cu atomic ratio of 3.65%. Control experiments, photoluminescence (PL) spectra, optical pump terahertz probe (OPTP) spectra, and electron spin resonance (ESR) tests confirm that the optimized TiO 2 modification promotes the separation of excited carriers and electron transfer in PhC 2 Cu and facilitates the activation of surface oxygen, thereby enhancing the formation of superoxide radicals, a key active oxygen species in the reaction system. This work presents a promising strategy for efficient imine synthesis via amine coupling and expands the application field of PhC 2 Cu-based photocatalysts.

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“…As shown in Figure 2g which may be due to its intrinsic black color and nonsemiconducting properties. [32] In addition, the Fe 3 O 4 /Co 3 O 4 sample with magnetism has enhanced absorption spectra over pure Co 3 O 4 in the visible region. Especially, when doped with GDY, the Fe 3 O 4 /Co 3 O 4 /GDY composite sample possesses significantly enhanced light absorption covering both the UV and visible regions, which may be due to the narrow bandgap semiconductor coupling.…”

Section: Structures and Compositions Of Photocatalystsmentioning

confidence: 97%

Rational Fabrication of Fe₃O₄/Co₃O₄/Graphdiyne Tandem Heterojunction toward Optimized Photocatalytic Hydrogen Evolution

Xie,

Wang,

et al. 2023

Solar RRL

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Graphdiyne (GDY) is a novel two‐dimensional material composed of sp and sp2 hybridized carbon atoms. Herein, GDY nanosheets are prepared from tribromobenzene by a simple ball‐milling‐assisted reduction–elimination method and is introduced into Fe3O4 colloidal spheres and Co3O4 cubes by low‐temperature mixing to efficiently synthesize Fe3O4/Co3O4/GDY tandem heterojunction photocatalysts. The hydrogen evolution activity of the optimized catalyst is 4.02 mmol g−1 h−1 under visible light (λ ≥ 420 nm), which is 100.05, 10.05, and 3.65 times higher than that of Fe3O4 (0.04 mmol g−1 h−1), Co3O4 (0.40 mmol g−1 h−1), and GDY (1.10 mmol g−1 h−1), respectively. In addition, the Prussian blue analog (PBA)‐derived Co3O4 improves the light‐harvesting efficiency and reaction kinetics. More importantly, the establishment of tandem heterojunctions prompts energy‐level alignment and optimizes charge multichannel transfer, which is the dominant factor for enhanced photocatalytic activity. Combined with time‐resolved photoluminescence spectra, valence band X‐Ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, and density functional theory calculations, the possible mechanism of Fe3O4/Co3O4/GDY series heterojunction is proposed and elucidated. This work provides a new idea for the construction of tandem heterojunctions based on graphdiyne and PBA derivatives.

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Photocatalytic debromination enhancement of Ph-C≡C-Cu by Fe3O4 modification

Cited by 14 publications

References 46 publications

Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al–Fe₃O₄ as Fenton-like Catalysts for the Efficient Degradation of Tetracycline

Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al–Fe₃O₄ as Fenton-like Catalysts for the Efficient Degradation of Tetracycline

Copper Phenylacetylide and TiO₂ Modification for an Efficient Visible-Light-Driven Oxidative Coupling of Amines

Rational Fabrication of Fe₃O₄/Co₃O₄/Graphdiyne Tandem Heterojunction toward Optimized Photocatalytic Hydrogen Evolution

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Photocatalytic debromination enhancement of Ph-C≡C-Cu by Fe3O4 modification

Cited by 14 publications

References 46 publications

Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al–Fe3O4 as Fenton-like Catalysts for the Efficient Degradation of Tetracycline

Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al–Fe3O4 as Fenton-like Catalysts for the Efficient Degradation of Tetracycline

Copper Phenylacetylide and TiO2 Modification for an Efficient Visible-Light-Driven Oxidative Coupling of Amines

Rational Fabrication of Fe3O4/Co3O4/Graphdiyne Tandem Heterojunction toward Optimized Photocatalytic Hydrogen Evolution

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Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al–Fe₃O₄ as Fenton-like Catalysts for the Efficient Degradation of Tetracycline

Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al–Fe₃O₄ as Fenton-like Catalysts for the Efficient Degradation of Tetracycline

Copper Phenylacetylide and TiO₂ Modification for an Efficient Visible-Light-Driven Oxidative Coupling of Amines

Rational Fabrication of Fe₃O₄/Co₃O₄/Graphdiyne Tandem Heterojunction toward Optimized Photocatalytic Hydrogen Evolution