Nanoneedle-Assembled Copper/Cobalt sulfides on nickel foam as an enhanced 3D hierarchical catalyst to activate monopersulfate for Rhodamine b degradation

Chen, Hsing‐Hua; Park, Young-Kwon; Kwon, Eilhann E.; Tsang, Yiu Fai; Thanh, Bui Xuan; Khiem, Ta Cong; You, Siming; Hu, Chechia; Lin, Kun‐Yi Andrew

doi:10.1016/j.jcis.2021.11.186

Cited by 17 publications

(4 citation statements)

References 52 publications

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“…The fraction of Co 2+ seemed smaller in the spent FCCM, whereas the fraction of Cu + also became relatively low in the spent FCCM. These variations were consistent with the reported mechanism of Oxone activation, in which metal species mediate Oxone activation through the transformation of valences of metal species as follows [51,52]:…”

Section: Reusability Of the Fccm And The Activation Mechanism Of The ...supporting

confidence: 91%

Modulating Direct Growth of Copper Cobaltite Nanostructure on Copper Mesh as a Hierarchical Catalyst of Oxone Activation for Efficient Elimination of Azo Toxicant

et al. 2022

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As cobalt (Co) has been the most useful element for activating Oxone to generate SO4•−, this study aims to develop a hierarchical catalyst with nanoscale functionality and macroscale convenience by decorating nanoscale Co-based oxides on macroscale supports. Specifically, a facile protocol is proposed by utilizing Cu mesh itself as a Cu source for fabricating CuCo2O4 on Cu mesh. By changing the dosages of the Co precursor and carbamide, various nanostructures of CuCo2O4 grown on a Cu mesh can be afforded, including nanoscale needles, flowers, and sheets. Even though the Cu mesh itself can be also transformed to a Cu-Oxide mesh, the growth of CuCo2O4 on the Cu mesh significantly improves its physical, chemical, and electrochemical properties, making these CuCo2O4@Cu meshes much more superior catalysts for activating Oxone to degrade the Azo toxicant, Acid Red 27. More interestingly, the flower-like CuCo2O4@Cu mesh exhibits a higher specific surface area and more superior electrochemical performance, enabling the flower-like CuCo2O4@Cu mesh to show the highest catalytic activity for Oxone activation to degrade Acid Red 27. The flower-like CuCo2O4@Cu mesh also exhibits a much lower Ea of Acid Red 27 degradation than the reported catalysts. These results demonstrate that CuCo2O4@Cu meshes are advantageous heterogeneous catalysts for Oxone activation, and especially, the flower-like CuCo2O4@Cu mesh appears as the most effective CuCo2O4@Cu mesh to eliminate the toxic Acid Red 27.

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Section: Reusability Of the Fccm And The Activation Mechanism Of The ...supporting

confidence: 91%

Modulating Direct Growth of Copper Cobaltite Nanostructure on Copper Mesh as a Hierarchical Catalyst of Oxone Activation for Efficient Elimination of Azo Toxicant

et al. 2022

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“…29 Cu/CoS@NF was found to be more effective in PMS activation than CuCo 2 O 4 @NF. 30 In these studies, however, the NF is primarily used as a macroscopic substrate to fix the catalyst rather than a deep involvement in PS activation. Furthermore, compared to PDS, most of the studies focus on PMS activation.…”

Section: ■ Introductionmentioning

confidence: 99%

“…They also fabricated monometallic oxides, such as MnO 2 and Co 3 O 4 , grown on NFs for PMS activation. , Furthermore, NF-supported Co 3 O 4 –Bi 2 O 3 was synthesized to activate PMS for pollutant degradation . Cu/CoS@NF was found to be more effective in PMS activation than CuCo 2 O 4 @NF . In these studies, however, the NF is primarily used as a macroscopic substrate to fix the catalyst rather than a deep involvement in PS activation.…”

Section: Introductionmentioning

confidence: 99%

Multimetallic CuCoNi Oxide Nanowires In Situ Grown on a Nickel Foam Substrate Catalyze Persulfate Activation via Mediating Electron Transfer

Wang

Liu

Wen

et al. 2022

Environ. Sci. Technol.

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In situ growth of nanostructures on substrates is a strategy for designing highly efficient catalytic materials. Herein, multimetallic CuCoNi oxide nanowires are synthesized in situ on a three-dimensional nickel foam (NF) substrate (CuCoNi–NF) by a hydrothermal method and applied to peroxydisulfate (PDS) activation as immobilized catalysts. The catalytic performance of CuCoNi–NF is evaluated through the degradation of organic pollutants such as bisphenol A (BPA) and practical wastewater. The results indicate that the NF not only plays an important role as the substrate support but also serves as an internal Ni source for material fabrication. CuCoNi–NF exhibits high activity and stability during PDS activation as it mediates electron transfer from BPA to PDS. CuCoNi–NF first donates electrons to PDS to arrive at an oxidized state and subsequently deprives electrons from BPA to return to the initial state. CuCoNi–NF maintains high catalytic activity in the pH range of 5.2–9.2, adapts to a high ionic strength up to 100 mM, and resists background HCO3 – and humic acid. Meanwhile, 76.6% of the total organic carbon can be removed from packaging wastewater by CuCoNi–NF-catalyzed PDS activation. This immobilized catalyst shows promising potential in wastewater treatment, well addressing the separation and recovery of conventional powdered catalysts.

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“…In addition, the employment of matrixes (g-C 3 N 4 [24] and reduced graphene oxide [25]) can effectively improve Mn 3 O 4 spatial configuration. Previous studies have demonstrated nickel foam as a supporter for the uniform distribution of nano/micro materials, such as Co(OH) 2 nanosheets [26], CuCoNi oxide nanowires [27], and Cu/CoS nano needles [28], which deliver high catalytic performance. Thus, the employment of nickel foam for the support of Mn 3 O 4 is worthy of study.…”

Section: Introductionmentioning

confidence: 99%

Peroxymonosulfate-Activation-Induced Phase Transition of Mn3O4 Nanospheres on Nickel Foam with Enhanced Catalytic Performance

et al. 2023

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The transformations of physicochemical properties on manganese oxides during peroxymonosulfate (PMS) activation are vital factors to be concerned. In this work, Mn3O4 nanospheres homogeneously loaded on nickel foam are prepared, and the catalytic performance for PMS activation is evaluated by degrading a target pollutant, Acid Orange 7, in aqueous solution. The factors including catalyst loading, nickel foam substrate, and degradation conditions have been investigated. Additionally, the transformations of crystal structure, surface chemistry, and morphology on the catalyst have been explored. The results show that sufficient catalyst loading and the support of nickel foam play significant roles in the catalytic reactivity. A phase transition from spinel Mn3O4 to layered birnessite, accompanied by a morphological change from nanospheres to laminae, is clarified during the PMS activation. The electrochemical analysis reveals that more favorable electronic transfer and ionic diffusion occur after the phase transition so as to enhance catalytic performance. The generated SO4•− and •OH radicals through redox reactions of Mn are demonstrated to account for the pollutant degradation. This work will provide new understandings of PMS activation by manganese oxides with high catalytic activity and reusability.

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Nanoneedle-Assembled Copper/Cobalt sulfides on nickel foam as an enhanced 3D hierarchical catalyst to activate monopersulfate for Rhodamine b degradation

Cited by 17 publications

References 52 publications

Modulating Direct Growth of Copper Cobaltite Nanostructure on Copper Mesh as a Hierarchical Catalyst of Oxone Activation for Efficient Elimination of Azo Toxicant

Modulating Direct Growth of Copper Cobaltite Nanostructure on Copper Mesh as a Hierarchical Catalyst of Oxone Activation for Efficient Elimination of Azo Toxicant

Multimetallic CuCoNi Oxide Nanowires In Situ Grown on a Nickel Foam Substrate Catalyze Persulfate Activation via Mediating Electron Transfer

Peroxymonosulfate-Activation-Induced Phase Transition of Mn3O4 Nanospheres on Nickel Foam with Enhanced Catalytic Performance

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