Multi-crystalline N-doped Cu/CuxO/C foam catalyst derived from alkaline N-coordinated HKUST-1/CMC for enhanced 4-nitrophenol reduction

Sun, Xubin; He, Peng; Gao, Zhu; Liao, Yuanxing; Weng, Shaoxia; Zhao, Zhongxing; Song, Hua

doi:10.1016/j.jcis.2019.06.004

Cited by 53 publications

(22 citation statements)

References 73 publications

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“…The net charge on the atoms was assigned through the analysis of natural bonding orbitals. By using highest occupied molecular orbital (HOMO) and least unoccupied molecular orbital (LUMO) energy values for a molecule, 25 electronegativity (χ), chemical hardness (η), and softness (δ) can be calculated using eqs 4–6, respectivelywhere I = − E HOMO and A = − E LUMO are ionization potential and electron affinity. 26…”

Section: Methodsmentioning

confidence: 99%

Porous Fe@C Composites Derived from Silkworm Excrement for Effective Separation of Anisole Compounds

Huang²,

Huang

et al. 2019

ACS Omega

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Silkworm excrement is a very useful biomass waste, composed of layer-structured fats and proteins, which are great precursors for carbon composite materials. In this work, new porous composites derived from silkworm excrement were prepared for selective separation of flavor 4-methylanisole from the binary 4-methylanisole/4-anisaldehyde mixture. In particular, the silkworm excrement, possessing a unique nanosheet structure, is converted into a graphite-like carbon by a simple calcination strategy followed by a metal-ion-doping procedure. This Fe@C composite exhibits a special nano-spongy morphology, anchoring Fe3C/Fe5C2 on the carbon nanosheets. Density functional theory simulations showed that 4-methylanisole presents a stronger π–π interaction and attraction forces with sp2 carbon nanosheets in Fe@C composites than 4-anisaldehyde. The selective adsorption experiments further confirmed that the Fe@C composites exhibited a 4-methylanisole capacity of 7.3 mmol/g at 298 K and the highest selectivity of 17 for an equimolar 4-methylanisole/4-anisaldehyde mixture among the examined adsorbents including MOFs and commercial activated carbon materials, which demonstrates the potential of this low-cost and eco-friendly porous carbon material as a promising sustainable adsorbent.

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Section: Methodsmentioning

confidence: 99%

Porous Fe@C Composites Derived from Silkworm Excrement for Effective Separation of Anisole Compounds

Huang²,

Huang

et al. 2019

ACS Omega

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“…4(b), we can further draw the conclusion that the appearance of multi-valence Cu is favorable for low temperature SCR, owing to the synergistic effect of CuO/Cu 2 O. 18 Considering that the precursors of samples with different loads are consistent, we choose the samples with better performance to study the thermal stability of precursors.…”

Section: Catalysts Calcinated At Different Atmospherementioning

confidence: 96%

“…10,13 Close interactions have been observed during the loading of Cu x O onto carbonaceous materials, which can regulate the valence distribution of copper species by virtue of their surface oxygen vacancy storage/release capacities and facilitate electron transfer among different Cu species. [17][18][19] Li et al prepared Cu x O-carbon nanotubes (CNTs), Cu x Oactivated carbon (AC) and Cu x O-graphite catalysts by wet impregnation methods to probe the effect of carbonaceous material supports and the nature of Cu x O species. It was found that the good de-NO x of the Cu-CNTs catalyst originated from the good dispersion of Cu x O, the existence of Cu + and the strong acid sites on the catalyst surface.…”

Section: Introductionmentioning

confidence: 99%

Generation of multi-valence Cu_xO by reduction with activated semi-coke and their collaboration in the selective reduction of NO with NH₃

et al. 2022

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“…[11] Sun et al successfully synthesized a N-doped Cu/Cu x O/C foam catalyst using N-coordinated HKUST-1/cellulose as raw material and applied it to the efficient reduction of 4-NP. [12] However, few reports have been reported on the application of Cu x S hybrid materials in NaBH 4 -assisted reduction of 4-NP. Carbon-based materials prepared by in situ pyrolysis of MOFs in an inert atmosphere, heteroatoms in the parent MOFs will be doped into the carbon matrix during the pyrolysis process.…”

Section: Introductionmentioning

confidence: 99%

Cu/Cu_xS‐Embedded N,S‐Doped Porous Carbon Derived in Situ from a MOF Designed for Efficient Catalysis

Wang

Fan

et al. 2021

Chemistry A European J

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The reasonable design of the precursor of a carbonbased nanocatalyst is an important pathway to improve catalytic performance. In this study, a simple solvothermal method was used to synthesize [Cu(TPT)(2,5-tdc)] • 2H 2 O (Cu-MOF), which contains N and S atoms, in one step. Further insitu carbonization of the Cu-MOF as the precursor was used to synthesize Cu/Cu x S-embedded N,S-doped porous carbon (Cu/Cu x S/NSC) composites. The catalytic activities of the prepared Cu/Cu x S/NSC were investigated through catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). The results show that the designed Cu/Cu x S/NSC has exceptional catalytic activity and recycling stability, with a reaction rate constant of 0.0256 s À 1 , and the conversion rate still exceeds 90 % after 15 cycles. Meanwhile, the efficient catalytic reduction of dyes (CR, MO, MB and RhB) confirmed its versatility. Finally, the active sites of the Cu/Cu x S/NSC catalysts were analyzed, and a possible multicomponent synergistic catalytic mechanism was proposed.

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Multi-crystalline N-doped Cu/CuxO/C foam catalyst derived from alkaline N-coordinated HKUST-1/CMC for enhanced 4-nitrophenol reduction

Cited by 53 publications

References 73 publications

Porous Fe@C Composites Derived from Silkworm Excrement for Effective Separation of Anisole Compounds

Porous Fe@C Composites Derived from Silkworm Excrement for Effective Separation of Anisole Compounds

Generation of multi-valence Cu_xO by reduction with activated semi-coke and their collaboration in the selective reduction of NO with NH₃

Cu/Cu_xS‐Embedded N,S‐Doped Porous Carbon Derived in Situ from a MOF Designed for Efficient Catalysis

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Multi-crystalline N-doped Cu/CuxO/C foam catalyst derived from alkaline N-coordinated HKUST-1/CMC for enhanced 4-nitrophenol reduction

Cited by 53 publications

References 73 publications

Porous Fe@C Composites Derived from Silkworm Excrement for Effective Separation of Anisole Compounds

Porous Fe@C Composites Derived from Silkworm Excrement for Effective Separation of Anisole Compounds

Generation of multi-valence CuxO by reduction with activated semi-coke and their collaboration in the selective reduction of NO with NH3

Cu/CuxS‐Embedded N,S‐Doped Porous Carbon Derived in Situ from a MOF Designed for Efficient Catalysis

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Generation of multi-valence Cu_xO by reduction with activated semi-coke and their collaboration in the selective reduction of NO with NH₃

Cu/Cu_xS‐Embedded N,S‐Doped Porous Carbon Derived in Situ from a MOF Designed for Efficient Catalysis