Controllable Synthesis of Mn3O4 Nanowires and Application in the Treatment of Phenol at Room Temperature

Han, Runlin; Chen, Min; Liu, Xiaobing; Zhang, Yuhang; Xie, Yongli; Sui, Yan

doi:10.3390/nano10030461

Cited by 9 publications

(6 citation statements)

References 20 publications

(18 reference statements)

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“…It was also observed that this structure was more distinct in catalyst prepared by pentane aided impregnation, as identified by the zoomed in area in Figure 2D2 . This fibril-like structure resembles the reported SEM images of manganese oxide (Mn 3 O 4 ) and mixed Fe-Mn oxide (FeMnO 3 ) crystallites [ 38 , 39 ] as well as carbon fibrils [ 40 ]. For identification of these structures, EDS analysis data along with SEM images were evaluated.…”

Section: Resultssupporting

confidence: 81%

Effect of promoter type and synthesis method on catalytic performance of Fe-Mn based FT-olefin catalysts

Gumuslu¹,

ATİK²

2022

Turkish Journal of Chemistry

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Direct production of light olefins, building blocks of chemical industry, can be attained by developing efficient catalysts for Fischer–Tropsch synthesis (FTS). The nature of FTS complicates the catalyst development process as the product distribution is affected by the components and the preparation methods of the catalyst. In this work, high-throughput (HT) methodology is employed to overcome this problem by testing many different catalyst formulations. Fast performance screening of 40 different α-Al 2 O 3 supported Fe-Mn based catalysts promoted with Cu, K and Ni, using different impregnation agents, was performed in a HT test system at atmospheric pressure. Promising catalyst candidates identified by HT analysis were further subjected to high pressure FTS in a conventional system. Results indicate that coupled with Mn, Ni promoted CH 4 production, Cu increased CO conversion, K enhanced olefin selectivity and olefin-to-paraffin ratio. In double promotion of Cu and K, Cu balanced the activity and stability loss due to K, while K enhanced olefin selectivity. n -pentane aided impregnation slightly enhanced catalytic performance. Differences observed in catalytic performance were regarded as related to the structural changes caused by promoter and impregnation type based on characterization data obtained by H 2 -TPR, XRD, SEM, EDS mapping and N 2 adsorption.

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Section: Resultssupporting

confidence: 81%

Effect of promoter type and synthesis method on catalytic performance of Fe-Mn based FT-olefin catalysts

Gumuslu¹,

ATİK²

2022

Turkish Journal of Chemistry

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“…Mn 3 O 4 nanorods are promising heterogeneous Fenton-type catalysts, , but their catalytic performance are still restricted by the low H 2 O 2 utilization efficiency, which is associated with the extremely low lifetime of • OH in water and the mass-transfer limitation . Very recently, Zhang et al demonstrated that spatial confinement of Fenton chemistry at the nanoscale can significantly enhance the kinetics of radical-mediated oxidation reactions.…”

Section: Introductionmentioning

confidence: 99%

Encapsulating Mn₃O₄ Nanorods in a Shell of SiO₂ Nanobubbles for Confined Fenton-Type Catalysis

et al. 2021

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Core−shell structured nanomaterials with delicate architectures have attracted considerable attention for realizing multifunctional responses and harnessing multiple interfaces for enhanced functionalities. Here, we report a controllable synthesis of core−shell structured Mn 3 O 4 @SiO 2 NB nanomaterials consisting of Mn 3 O 4 nanorods covered with a shell of SiO 2 nanobubbles. A series of Mn 3 O 4 @SiO 2 NB catalysts with tunable secondary structures can be synthesized by simply tuning the feeding ratio and the modification conditions. The as-synthesized Mn 3 O 4 @SiO 2 NB catalysts exhibit excellent catalytic performance in the degradation of methylene blue (MB) because the Fenton-type reaction between Mn 3 O 4 and H 2 O 2 is confined in an MB-rich environment created by the SiO 2 nanobubble shell. The confined Fenton-type catalysis maximizes the contact of MB molecules with the reactive oxygen species and significantly promotes the degradation efficiency of MB. Under optimal conditions, Mn 3 O 4 @SiO 2 NB-0.4 can reach a degradation efficiency of 92% at room temperature and neutral pH within 12 min, which outperforms most reported Mnbased catalysts.

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“…Adsorption is considered as the one of the best techniques in waste water treatment and gas separation due to the simplicity in set-up and cost efficiency [ 17 , 18 ]. Porous materials with high surface area and strong binding affinity are very promising candidates for sustainable and clean water supply in the future [ 19 , 20 ]. It has been demonstrated that the transition metals have obvious effect on the AlPO-5 zeolite adsorption capacity and the ZnAPO-5 showed higher adsorption capacity for all xylene isomers [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of self-assembled hierarchical AlPO-34 microspheres by using an ionic liquid and its application in heavy metal removal

Zhou

Han

2021

R. Soc. open sci.

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Hierarchical AlPO-34 molecular sieves microspheres were synthesized in a [BMIm]Br ionic liquid without template or complex post-treatment process. The formation mechanism of such framework structures and their morphology were investigated. [BMIm]Br was proven to serve as both solvent and sole provider of the structure directing agent. The organic amine in the compound affects the framework density of the crystals and promotes the formation of a chabazite (CHA) type framework. After ageing for 1 h the AlPO-34 microspheres are formed due to the aggregation properties of the ionic liquid. The hierarchical mirosphere has a relatively high Brunauer–Emmett–Teller surface area and a considerably uniform mesoporous channel network. The hierarchical AlPO-34 microspheres were used as absorbers of heavy metal cations and showed a higher loading capacity and distribution coefficient compared with the AlPO-34-NH.

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Controllable Synthesis of Mn3O4 Nanowires and Application in the Treatment of Phenol at Room Temperature

Cited by 9 publications

References 20 publications

Effect of promoter type and synthesis method on catalytic performance of Fe-Mn based FT-olefin catalysts

Effect of promoter type and synthesis method on catalytic performance of Fe-Mn based FT-olefin catalysts

Encapsulating Mn₃O₄ Nanorods in a Shell of SiO₂ Nanobubbles for Confined Fenton-Type Catalysis

Synthesis of self-assembled hierarchical AlPO-34 microspheres by using an ionic liquid and its application in heavy metal removal

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Controllable Synthesis of Mn3O4 Nanowires and Application in the Treatment of Phenol at Room Temperature

Cited by 9 publications

References 20 publications

Effect of promoter type and synthesis method on catalytic performance of Fe-Mn based FT-olefin catalysts

Effect of promoter type and synthesis method on catalytic performance of Fe-Mn based FT-olefin catalysts

Encapsulating Mn3O4 Nanorods in a Shell of SiO2 Nanobubbles for Confined Fenton-Type Catalysis

Synthesis of self-assembled hierarchical AlPO-34 microspheres by using an ionic liquid and its application in heavy metal removal

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Encapsulating Mn₃O₄ Nanorods in a Shell of SiO₂ Nanobubbles for Confined Fenton-Type Catalysis