Bimetallic Co/Zn zeolitic imidazolate framework ZIF-67 supported Cu nanoparticles: An excellent catalyst for reduction of synthetic dyes and nitroarenes

Budi, Canggih Setya; Deka, Juti Rani; Hsu, Wan Chi; Saikia, Diganta; Chen, Ke Ting; Kao, Hsien Ming; Yang, Yicheng

doi:10.1016/j.jhazmat.2020.124392

Cited by 75 publications

(21 citation statements)

References 59 publications

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“…5a), and the other two are satellite peaks. 36 Compared with the parent ZIF-67, when Pd NCs were loaded on the surface of ZIF-67, both the Co 2p and N 1s (Fig. 5b) binding energies for ZIF-67 showed a slight decline (0.03 eV and 0.05 eV).…”

Section: Resultsmentioning

confidence: 95%

Tuning the electronic property of Pd nanoparticles by encapsulation within ZIF-67 shells towards enhanced performance in 1,3-butadiene hydrogenation

Dai

Liao

et al. 2022

Catal. Sci. Technol.

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Section: Resultsmentioning

confidence: 95%

Tuning the electronic property of Pd nanoparticles by encapsulation within ZIF-67 shells towards enhanced performance in 1,3-butadiene hydrogenation

Dai

Liao

et al. 2022

Catal. Sci. Technol.

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“…A lot of ZIF particles can be formed on the membranes (SI Figure S2), and there are some differences in the morphology, which may be caused by the difference in the molar ratio of Co/Zn . CoZn-ZIF is a typical zeolitic imidazole skeleton formed by the coordination of Co/Zn ions with 2-methylimidazole. , In the surface-nucleated heterogeneous growth process of CoZn-ZIF on the Al 2 O 3 ceramic membrane, 2-methylimidazole can be linked with Al via Al–N bond followed by the formation of CoZn-ZIF on the membrane .…”

Section: Resultsmentioning

confidence: 99%

ZIF-Derived Co/Zn Bimetallic Catalytic Membrane with Abundant CNTs for Highly Efficient Reduction of p-Nitrophenol

Jiang

Wang

Chen

et al. 2022

Ind. Eng. Chem. Res.

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Design and synthesis of cheap and high-efficiency catalytic membranes are of great significance for green chemical engineering. Herein, we report a Co/Zn bimetallic catalytic membrane (CoZn@CM) through a selfsacrificial template approach, where Co/Zn zeolitic imidazolate framework (Co/ Zn-ZIF) was first in situ grown on the ceramic membrane (CM) and then pyrolyzed under Ar atmosphere. Adjusting the Co 2+ concentration during the synthesis of Co/Zn-ZIF@CM and the pyrolysis temperature can achieve the catalytic membrane of CoZn@CM with rich carbon nanotubes (CNTs) on the membrane, lots of Co nanoparticles with a smaller particle size and a large number of mesopores, thereby improving its catalytic activity for the liquid-phase p-nitrophenol hydrogenation to p-aminophenol in a flow-through catalytic membrane reactor. The as-fabricated Co0.2Zn0.4−920@CM exhibits excellent catalytic activity, which is about 2.7 times that of Co0Zn0.6−920@CM and 2.4 times that of Co0.2Zn0.4−770@CM. Moreover, Co0.2Zn0.4−920@CM can keep its catalytic performance after five reaction cycles of p-nitrophenol hydrogenation.

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“…The 67.5 Co NP catalyst obtained after the heat treatment of ZIF-67 exhibited a set of peaks at 2θ = 44.2, 51.5, and 75.9° corresponding to the (111), (200), and (220) crystal planes, indicative of face-centered cubic Co crystals (JCPDS no. 15-0806). − As the low-boiling Zn atoms evaporated under a high temperature of 900 °C, Zn atoms were not observed. However, the introduction of Zn led to significant differences in the dispersion of Co atoms.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Catalysis of the Synthesis of Ammonia with Co-Based Catalysts and Plasma: From Nanoparticles to a Single Atom

Jiao

Cui

et al. 2021

ACS Appl. Mater. Interfaces

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In this study, a series of Co nanoparticles (NPs) with different sizes and Co single-atom catalysts (SACs) with different cobalt−nitrogen coordination numbers (Co−N 2 , Co−N 3 , and Co−N 4 ) were synthesized and applied to the synthesis of ammonia catalyzed by plasma at low temperatures and atmospheric pressures. Under the same reaction conditions, the yield of nitrogen obtained from the reduction to ammonia over a series of Co NP catalysts varies with the Co particle size. The smaller the size of the Co NPs, the greater the number of exposed active centers, and the catalytic activity is higher. Among the Co SACs, the best catalyst was Co−N 2 with two coordinated nitrogen atoms, and the ammonia yield was 181 mg. The experimental and theoretical calculations were consistent in that a low Co−N coordination number was beneficial to the adsorption and dissociation of N 2 , thereby enhancing the reduction activity of N 2 and promoting the increase of ammonia production.

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Bimetallic Co/Zn zeolitic imidazolate framework ZIF-67 supported Cu nanoparticles: An excellent catalyst for reduction of synthetic dyes and nitroarenes

Cited by 75 publications

References 59 publications

Tuning the electronic property of Pd nanoparticles by encapsulation within ZIF-67 shells towards enhanced performance in 1,3-butadiene hydrogenation

Tuning the electronic property of Pd nanoparticles by encapsulation within ZIF-67 shells towards enhanced performance in 1,3-butadiene hydrogenation

ZIF-Derived Co/Zn Bimetallic Catalytic Membrane with Abundant CNTs for Highly Efficient Reduction of p-Nitrophenol

Synergistic Catalysis of the Synthesis of Ammonia with Co-Based Catalysts and Plasma: From Nanoparticles to a Single Atom

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