Application of palladium nanoparticle‐decorated <scp><i>Artemisia abrotanum</i></scp> extract‐modified graphene oxide for highly active catalytic reduction of methylene blue, methyl orange and rhodamine B

Salehi, Mirmehdi Hashemi; Yousefi, Mohammad; Hekmati, Malak; Balali, Ebrahim

doi:10.1002/aoc.5123

Cited by 40 publications

(12 citation statements)

References 52 publications

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“…The proposed mechanism for the Co‐Cu/ZIF reduction of MO and RhB is the same as the known mechanism for the metal catalyzed reduction reactions of MO and RhB. On the basis of common analogies, produced H 2 from the reaction of NaBH 4 and H 2 O in the presence of ZIF catalyst reduce Methyl Orange to N 1 ,N 1 ‐dimethylbenzene‐1,4‐diamine and sodium 4‐aminobenzenesulfonate and Rhodamine B to leuco rhodamine B (Figure ) …”

Section: Resultsmentioning

confidence: 82%

Co/Cu bimetallic ZIF as New heterogeneous catalyst for reduction of nitroarenes and dyes

Naghshbandi

Sansano

2020

Applied Organom Chemis

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Nowadays one of the great challenges is to design new bimetallic catalysts with enhanced catalytic activity, selectivity and recycling properties. In this work, the preparation of new Co/Cu bimetallic Zeolitic Imidazolate Framework (Co‐Cu/ZIF) as an efficient catalyst for the reduction of nitro compounds and organic dyes is described. Co‐Cu/ZIF was characterized with different techniques such as SEM, TEM, XRD, XPS, TGA, FT‐IR and UV–vis absorption indicating formation of entirely uniform cubic particles. Using this catalyst, structurally different aromatic nitro compounds were reduced efficiently to corresponding amines in excellent yields. Kinetic studies revealed that the reduction rates of nitrophenol isomers follow 3‐NP > 4‐NP > 2‐NP order. The catalytic activity of Co‐Cu/ZIF was further investigated in the reduction of organic dyes such as methyl orange (MO) and rhodamine B (RhB). This catalyst was recycled for at least ten runs in the reduction of 4‐nitrophenol without a noticeable decrease in activity and reused catalyst was characterized.

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Section: Resultsmentioning

confidence: 82%

Co/Cu bimetallic ZIF as New heterogeneous catalyst for reduction of nitroarenes and dyes

Naghshbandi

Sansano

2020

Applied Organom Chemis

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“…This phenomenon indicated that the NN functional groups in the organic dyes as the color group were reduced to N−N (Figure 1). 55,56 The conversion rate of the catalyst Co@NC-600 on the dyes can be reflected as a function of C/C 0 and t. With an extension of the time, both RhB (Figure 11c) and MB (Figure 11d) can achieve complete reduction conversion. When the reaction time is 30 s, the conversion rates of RhB and MB are 95.7% and 99.9%.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a Magnetic 2D Co@NC-600 Material by Designing a MOF Precursor for Efficient Catalytic Reduction of Water Pollutants

Wang

Zeng

et al. 2020

Inorg. Chem.

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2D metal–organic framework (MOFs) can be ideal sacrificial templates for fabricating nanomaterials because of active sites exposed on the surface rather than in pores and channels, often exhibiting improved performance in catalysis applications. In this study, the novel 2D layered cobalt-based MOF [Co(TPT)(fma)(H2O)2]·3H2O (Co-MOF) has been constructed by the selection of high N atom content ligands. On this basis, a 2D nitrogen-doped carbon-coated cobalt nanoparticle composite (Co@NC) was prepared by using this MOF as a precursor. Magnetic Co@NC has excellent catalytic activity and recycling features regarding the reaction of 4-nitrophenol (4-NP) reducing to 4-aminophenol (4-AP) in the presence of NaBH4 at ambient temperature. 2D Co@NC-600 can reach nearly 100% conversion within 120 s and its stability remains almost unchanged after five reaction cycles. Moreover, this Co@NC catalyst also is highly active for catalytic reduction of dyes such as Rhodamine B (RhB) and Methylene blue (MB).

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“…The same catalytic mechanism applies to the degradation of RhB and MLB as well with their reduction reactions shown in Fig. 7 B and C. The presence of NaBH 4 and GNC catalyst leads to the fast reduction of MLB and RhB to their lecuo forms [59], resulting in the decay of the dye color.…”

Section: Reactionmentioning

confidence: 70%

Sequential droplet reactions for surface-bound gold nanocrater array

Dabodiya

et al. 2022

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Application of palladium nanoparticle‐decorated Artemisia abrotanum extract‐modified graphene oxide for highly active catalytic reduction of methylene blue, methyl orange and rhodamine B

Cited by 40 publications

References 52 publications

Co/Cu bimetallic ZIF as New heterogeneous catalyst for reduction of nitroarenes and dyes

Co/Cu bimetallic ZIF as New heterogeneous catalyst for reduction of nitroarenes and dyes

Synthesis of a Magnetic 2D Co@NC-600 Material by Designing a MOF Precursor for Efficient Catalytic Reduction of Water Pollutants

Sequential droplet reactions for surface-bound gold nanocrater array

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