Cotton-derived carbon fiber-supported Ni nanoparticles as nanoislands to anchor single-atom Pt for efficient catalytic reduction of 4-nitrophenol

Yang, Xiaoyan; Wang, Jiaren; Wei, Yunbao; Li, Bohan; Yan, Wenjun; Yin, Liangke; Wu, Dongqing; Liu, Peng; Zhang, Peng

doi:10.1016/j.apcata.2022.118734

Cited by 15 publications

(2 citation statements)

References 63 publications

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“…[50] Since surface W and Bi are in oxidation state + 6 and 0, as a result, the electron-rich Bi compared to W in the bimetallic EDTA-Bi 2 WO 6 catalyst, facilitates electron and H transfer from borohydride ions to nitrophenolate ions, whereas nitrophenolate ions get preferentially adsorb and activated at the active site of the catalyst. [51] The reduction of 4-NP to 4-AP involves successive evolution of intermediates like nitroso and hydroxylamine derivatives, as confirmed by the HPLC investigation, and the chromatogram is presented in Figure S1. [52] The retention times of the reduced product 4-AP and the target pollutant 4-NP are 9.5 and 14.4 min, respectively.…”

Section: Mechanism Of 4-nitrophenol Reductionmentioning

confidence: 63%

Chelating Agent‐Assisted‐Bi₂WO₆ Nanostructured Materials for Electron Transfer‐Driven Ultrafast Catalytic Reduction of Organic and Inorganic Contaminants

et al. 2023

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We report a chelating agent‐assisted synthesis of Bi2WO6 nanomaterials using a facile hydrothermal method. The presence of a chelating agent (EDTA) influences the degree of crystallinity, morphology, and surface area of Bi2WO6. Analysis by electron microscopy revealed morphological changes of Bi2WO6 from flower‐like to multilayered disc‐like structures after introducing EDTA. The surface area of pristine Bi2WO6 NMs is significantly increased from 31 to 50 m2 g−1. We demonstrated the catalytic properties of Bi2WO6 and EDTA‐Bi2WO6 for 4‐nitrophenol (4‐NP), methyl orange (MO), congo red (CR), and [Fe(CN)6]3− reductions in the presence of NaBH4. It was observed that EDTA‐Bi2WO6 exhibited higher catalytic activity compared to the pristine Bi2WO6 NMs. The reduction reactions followed pseudo‐first‐order kinetics and the rate constant values of EDTA‐Bi2WO6 for 4‐NP, MO, CR, and [Fe(CN)6]3− reductions were found to be 0.847, 0.584, 0.702, and 0.463 min−1, respectively. The reduction proceeds through electron transfer process over an EDTA‐Bi2WO6 catalyst in the presence of NaBH4. Furthermore, EDTA‐Bi2WO6 also showed ultrafast catalytic performance to dichromate (Cr2O72−) reduction, compared to pristine Bi2WO6. The EDTA‐Bi2WO6 catalyst could be recycled up to five times without undergoing a significant loss in activity.

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Section: Mechanism Of 4-nitrophenol Reductionmentioning

confidence: 63%

Chelating Agent‐Assisted‐Bi₂WO₆ Nanostructured Materials for Electron Transfer‐Driven Ultrafast Catalytic Reduction of Organic and Inorganic Contaminants

et al. 2023

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“…In recent years, the use of metal-based heterogeneous catalysts for decolorizing and converting N-containing organic dyes to aminoaromatic substances has attracted much attention due to their excellent treatment efficiency and capability [11][12][13][14][15]. In order to gain high catalytic efficiency and favorable utilization of active metal, the metal species are usually loaded on support materials in the form of nanoparticles [16], clusters [17], or even single atoms [18,19]. However, their small sizes lead to obvious drawbacks, such as difficulty in separating and recycling the catalyst from the reaction systems efficiently by conventional methods (e.g., filtration and centrifugation) [20].…”

Section: Introductionmentioning

confidence: 99%

Ni-Pd-Incorporated Fe3O4 Yolk-Shelled Nanospheres as Efficient Magnetically Recyclable Catalysts for Reduction of N-Containing Unsaturated Compounds

Wang

Wen

et al. 2023

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The use of metal-based heterogeneous catalysts for the degradation of N-containing organic dyes has attracted much attention due to their excellent treatment efficiency and capability. Here, we report the synthesis of heterometals (Ni and Pd)-incorporated Fe3O4 (Ni-Pd/Fe3O4) yolk-shelled nanospheres for the catalytic reduction of N-containing organic dyes using a facile combination of solvothermal treatment and high-temperature annealing steps. Benefiting from the magnetic properties and the yolk-shelled structure of the Fe3O4 support, as well as the uniformly dispersed active heterometals incorporated in the shell and yolk of spherical Fe3O4 nanoparticles, the as-prepared Ni-Pd/Fe3O4 composite shows excellent recyclability and enhanced catalytic activity for three N-containing organic dyes (e.g., 4-nitrophenol, Congo red, and methyl orange) compared with its mono metal counterparts (e.g., Ni/Fe3O4 and Pd/Fe3O4). In the 4-nitrophenol reduction reaction, the catalytic activity of Ni-Pd/Fe3O4 was superior to many Fe3O4-supported nanocatalysts reported within the last five years. This work provides an effective strategy to boost the activity of iron oxide-based catalytic materials via dual or even multiple heterometallic incorporation strategy and sheds new light on environmental catalysis.

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Rational construction of Co-promoted 1T-MoS2 nanoflowers towards high-efficiency 4-nitrophenol reduction

Zhang

Wang

Huang

et al. 2022

Environ Sci Pollut Res

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Developing e cient and cost-effective non-noble metal catalysts for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) is of great importance. Herein, Co-promoted 1T-MoS 2 nano owers were synthesized via a one-step hydrothermal method. The in uence of Co content on the structure and catalytic performance of 1T-MoS 2 was studied in detail. It was found the highest activity could be achieved due to the synergy effect of Co-Mo-S and CoS 2 active phase. The reaction rate constant was as high as 0.908 min -1 , and the catalyst exhibited excellent stability after recycling ve times. We believe the understanding of the role of Co promoter would provide new insights for the rational design of highly e cient MoS 2 -based catalysts towards 4-NP reduction in wastewater. Article HighlightsCo-promoted 1T-MoS 2 nano owers were synthesized by a facile one-pot hydrothermal method.The optimized Co/1T-MoS 2 catalyst showed excellent catalytic activity and stability in the reduction of 4-nitrophenol.The excellent catalytic performance was attributed to the synergism between Co-Mo-S and CoS 2 active phase.

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Cotton-derived carbon fiber-supported Ni nanoparticles as nanoislands to anchor single-atom Pt for efficient catalytic reduction of 4-nitrophenol

Cited by 15 publications

References 63 publications

Chelating Agent‐Assisted‐Bi₂WO₆ Nanostructured Materials for Electron Transfer‐Driven Ultrafast Catalytic Reduction of Organic and Inorganic Contaminants

Chelating Agent‐Assisted‐Bi₂WO₆ Nanostructured Materials for Electron Transfer‐Driven Ultrafast Catalytic Reduction of Organic and Inorganic Contaminants

Ni-Pd-Incorporated Fe3O4 Yolk-Shelled Nanospheres as Efficient Magnetically Recyclable Catalysts for Reduction of N-Containing Unsaturated Compounds

Rational construction of Co-promoted 1T-MoS2 nanoflowers towards high-efficiency 4-nitrophenol reduction

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Cotton-derived carbon fiber-supported Ni nanoparticles as nanoislands to anchor single-atom Pt for efficient catalytic reduction of 4-nitrophenol

Cited by 15 publications

References 63 publications

Chelating Agent‐Assisted‐Bi2WO6 Nanostructured Materials for Electron Transfer‐Driven Ultrafast Catalytic Reduction of Organic and Inorganic Contaminants

Chelating Agent‐Assisted‐Bi2WO6 Nanostructured Materials for Electron Transfer‐Driven Ultrafast Catalytic Reduction of Organic and Inorganic Contaminants

Ni-Pd-Incorporated Fe3O4 Yolk-Shelled Nanospheres as Efficient Magnetically Recyclable Catalysts for Reduction of N-Containing Unsaturated Compounds

Rational construction of Co-promoted 1T-MoS2 nanoflowers towards high-efficiency 4-nitrophenol reduction

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Chelating Agent‐Assisted‐Bi₂WO₆ Nanostructured Materials for Electron Transfer‐Driven Ultrafast Catalytic Reduction of Organic and Inorganic Contaminants

Chelating Agent‐Assisted‐Bi₂WO₆ Nanostructured Materials for Electron Transfer‐Driven Ultrafast Catalytic Reduction of Organic and Inorganic Contaminants