Sm-doped g-C3N4/Ti3C2 MXene heterojunction for visible-light photocatalytic degradation of ciprofloxacin

Yu, Mingchuan; Liang, Huanjing; Zhan, Ruonan; Xu, Lei; Niu, Junfeng

doi:10.1016/j.cclet.2020.11.069

Cited by 90 publications

(21 citation statements)

References 29 publications

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“…41,42 Ti 3 C 2 T x was obtained by etching the Ti 3 AlC 2 phase, followed by ultrasound treatment. 37 To prepare the Co−N−C/Ti 3 C 2 T x , Co 2+ salt was first added to the Ti 3 C 2 T x solution and stirred for one day to ensure the maximum adsorption of cobalt ions. Then, the 2methylimidazole solution was added.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Coupling Co–N–C with MXenes Yields Highly Efficient Catalysts for H₂O₂ Production in Acidic Media

Huang

Liu

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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The electrochemical oxygen reduction reaction (ORR) offers a promising method to replace the anthraquinone process for hydrogen peroxide (H 2 O 2 ) production. However, the efficiency of this process suffers from sluggish kinetics, particularly in an acidic environment. Therefore, employing catalysts with high electroactivity is highly desirable for H 2 O 2 synthesis. Here, an effective strategy for preparing Co−N−C/Ti 3 C 2 T x with high H 2 O 2 selectivity and ORR reactivity is proposed. The acquired Co−N−C/Ti 3 C 2 T x shows excellent H 2 O 2 electrosynthesis performance in acidic media with H 2 O 2 productivity of up to 3200 ppm h −1 , superior to state-of-the-art catalysts. Interestingly, a H 2 O 2 concentration of 6.0 wt % was obtained after the stability test, and the Co−N−C/Ti 3 C 2 T x catalyst was found to effectively catalyze organic dye degradation. Further analysis reveals that the enhanced H 2 O 2 electrosynthesis performance originates from the layered structure and the oxygen functional groups of Ti 3 C 2 T x . The layered structure can effectively promote increased exposure of active sites, while the oxygen functional groups will fine-tune the electronic structure of Co atoms, allowing a selective ORR pathway to produce H 2 O 2 . This work provides a strategy to design and fabricate highly efficient catalysts for H 2 O 2 production and degradation of organic pollutants.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Coupling Co–N–C with MXenes Yields Highly Efficient Catalysts for H₂O₂ Production in Acidic Media

Huang

Liu

Zhang

et al. 2022

ACS Appl. Mater. Interfaces

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“…Before the synthesis of P-Fe 1 Co 1 /CN, CN and FeCo-LDH were first prepared according to modified previously mentioned methods. , Then, P-Fe 1 Co 1 /CN was prepared by annealing of solid mixtures of CN and FeCo-LDH under an external phosphorus atmosphere. Briefly, 0.01 g of FeCo-LDH and 0.2 g of CN were mixed through grinding and placed in a tube furnace.…”

Section: Methodsmentioning

confidence: 99%

Understanding of the Dual Roles of Phosphorus in Atomically Distributed Fe/Co-N₄P₂ over Carbon Nitride for Photocatalytic Debromination from Tetrabromobisphenol A

Liu

Sun

et al. 2022

ACS Appl. Mater. Interfaces

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Atomically dispersed Fe and Co on carbon nitride under an external phosphine (PH 3 ) atmosphere (P-Fe 1 Co 1 /CN) are prepared. Combined with the results of calculations and experiments, the formed P-induced bimetallic single atoms of Fe/Co-N 4 P 2 can provide more reactive sites to enhance optical performance. Meanwhile, the introduced P can coordinate with Fe and Co and change the sole nitrogen coordination environment via the bridging effect. Herein, on the one hand, the structure of Fe−P−Co enhances interactions of single atoms in heterogeneous metals, and, on the other hand, the formed Fe/Co-N 4 P 2 effectively changes the electron configuration in coordination centers. All of the abovementioned findings can enhance the photocatalytic performance of P-Fe 1 Co 1 / CN, achieving 96% removal and 51% debromination rates from tetrabromobisphenol A under visible light irradiation. The two efficiencies can be further improved under UV−vis light irradiation. The findings of this work reveal the dual roles of P in bimetallic single-atom catalysts, provide a facile method to synthesize Passisted bimetal single-atom photocatalysts, and highlight the great potential of carbon nitride-based single atoms as photocatalysts.

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“…2e), which can be ascribed to C-N-C (398.6 eV), tertiary nitrogen N-(C) 3 (400.1 eV), N-H groups (401.2 eV), and p-excitations (404.3 eV). 33,34 Notably, the broad band at 401.2 eV mainly resulted from the terminal amino groups (C-N-H) owing to incomplete condensation in the process of thermal polymerization, which would react with the carboxy and hydroxyl groups on the CMS surface through a hydroxylation reaction and result in lamellar g-C 3 N 4 self-assembly on CMSs, 35 and therefore the reduction of O content in g-C 3 N 4 @CMS micromotors. The above assumption can also be veried by the C 1s high-resolution spectrum in g-C 3 N 4 @CMS micromotors.…”

Section: Preparation Of G-c 3 N 4 @Cms Micromotorsmentioning

confidence: 99%

Photocatalytic-induced bubble-propelled isotropic g-C₃N₄-coated carbon microsphere micromotors for dynamic removal of organic pollutants

Song

Tao

et al. 2022

RSC Adv.

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Sm-doped g-C3N4/Ti3C2 MXene heterojunction for visible-light photocatalytic degradation of ciprofloxacin

Cited by 90 publications

References 29 publications

Coupling Co–N–C with MXenes Yields Highly Efficient Catalysts for H₂O₂ Production in Acidic Media

Coupling Co–N–C with MXenes Yields Highly Efficient Catalysts for H₂O₂ Production in Acidic Media

Understanding of the Dual Roles of Phosphorus in Atomically Distributed Fe/Co-N₄P₂ over Carbon Nitride for Photocatalytic Debromination from Tetrabromobisphenol A

Photocatalytic-induced bubble-propelled isotropic g-C₃N₄-coated carbon microsphere micromotors for dynamic removal of organic pollutants

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Sm-doped g-C3N4/Ti3C2 MXene heterojunction for visible-light photocatalytic degradation of ciprofloxacin

Cited by 90 publications

References 29 publications

Coupling Co–N–C with MXenes Yields Highly Efficient Catalysts for H2O2 Production in Acidic Media

Coupling Co–N–C with MXenes Yields Highly Efficient Catalysts for H2O2 Production in Acidic Media

Understanding of the Dual Roles of Phosphorus in Atomically Distributed Fe/Co-N4P2 over Carbon Nitride for Photocatalytic Debromination from Tetrabromobisphenol A

Photocatalytic-induced bubble-propelled isotropic g-C3N4-coated carbon microsphere micromotors for dynamic removal of organic pollutants

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Product

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Coupling Co–N–C with MXenes Yields Highly Efficient Catalysts for H₂O₂ Production in Acidic Media

Coupling Co–N–C with MXenes Yields Highly Efficient Catalysts for H₂O₂ Production in Acidic Media

Understanding of the Dual Roles of Phosphorus in Atomically Distributed Fe/Co-N₄P₂ over Carbon Nitride for Photocatalytic Debromination from Tetrabromobisphenol A

Photocatalytic-induced bubble-propelled isotropic g-C₃N₄-coated carbon microsphere micromotors for dynamic removal of organic pollutants