On the kinetics of catalytic hydrogenation over Pd nanoparticles regulated by various nucleosides

Wang, Tengda; Shan, Jianxing; Wang, Li; Zhang, Xiangwen; Li, Guozhu

doi:10.1016/j.ces.2019.02.014

Cited by 5 publications

(3 citation statements)

References 48 publications

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“…Upon addition of TM1-NCs, a drastic decrease of the absorbance was observed as a result of the reduction of 4-NP to 4-aminophenol (4-AP) ( Figure S2, Supporting Information), as reported in the previous work. [25] Due to excess amount of NaBH 4 , it was considered as a pseudofirst-order kinetic reaction, [32,33] and apparent rate constant (k app ) values were calculated from the slope of linear relationship between ln(A t /A 0 ) and reaction time (t), where A 0 and A t represent the absorbance of 4-NP at the initial stage and time t. [34] According to kinetic data ( Figure S3A, Supporting Information) and linear fits ( Figure S3B, Supporting Information), k app values were obtained for the five DNA-AgNCs ( Figure S3C, Supporting Information). The results indicate that DNA-AgNCs possess apparent catalytic activity toward 4-NP reduction.…”

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confidence: 99%

Regulating Catalytic Activity of DNA‐Templated Silver Nanoclusters Based on their Differential Interactions with DNA Structures and Stimuli‐Responsive Structural Transition

Guo

Ren

et al. 2020

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This work reports exquisite engineering of catalytic activity of DNA‐templated silver nanoclusters (DNA‐AgNCs) based on unique adsorption phenomena of DNAs on DNA‐AgNCs and reversible transition between double and triple‐stranded DNAs. Four DNA homopolymers exhibit different inhibition effects on the catalytic activity of DNA‐AgNCs, poly adenine (polyA) > poly guanine (polyG) > poly cytosine (polyC) > poly thymine (polyT), demonstrating that polyA strands have the strongest adsorption affinity on DNA‐AgNCs. Through the formation of T‐A•T triplex DNAs, catalytic activity of DNA‐AgNCs is restored from the deactivated state by double or single‐stranded DNAs, indicating the participation of N7 groups of adenine bases in binding to DNA‐AgNCs and blocking active sites. Accordingly, reversibly regulating catalytic activity of DNA‐AgNCs can be realized based on DNA input‐stimulated transition between duplex and triplex structures. In the end, two low‐cost and facile biosensing methods are presented, which are derived from the activity‐switchable platform. It is worthy to anticipate that the DNA‐AgNCs with controlled catalytic activity will inspire researchers to devise more functionalized nanocatalysts and contribute to the exploration of intelligent biomedicine in the future.

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confidence: 99%

Regulating Catalytic Activity of DNA‐Templated Silver Nanoclusters Based on their Differential Interactions with DNA Structures and Stimuli‐Responsive Structural Transition

Guo

Ren

et al. 2020

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“…The hydrogenation of CAL is a complex process with the possible generation of three major products, HCAL, COL and HCOL, as shown in Scheme 1. Our previous work showed that pyrimidine nucleoside as capping agent could regulate the structural characteristics of Pd NPs (NPs) and tune their catalytic performance of hydrogenation [19] . In this work, cytidine (Cs) and polyvinylpyrrolidone (PVP) have been employed to stabilize Pd and Pt NPs, increase their activity for hydrogenation.…”

Section: Resultsmentioning

confidence: 99%

“…Our previous work showed that pyrimidine nucleoside as capping agent could regulate the structural characteristics of Pd NPs (NPs) and tune their catalytic performance of hydrogenation. [19] In this work, cytidine (Cs) and polyvinylpyrrolidone (PVP) have been employed to stabilize Pd and Pt NPs, increase their activity for hydrogenation. Those NPs were then loaded on various carbon supports to further adjust their selectivities of C=C bonds and C=O bonds in CAL.…”

Section: Resultsmentioning

confidence: 99%

Tunable Selective Hydrogenation of Cinnamaldehyde by Capped Pt/Pd Nanoparticles Supported on Carbon Nanotubes

et al. 2022

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A series of catalysts containing Pt or Pd nanoparticles (NPs) jointly regulated by cytidine (Cs) and polyvinylpyrrolidone (PVP) have been prepared for selective hydrogenation of cinnamaldehyde (CAL). The Pt/Pd NPs were supported on carbon nanotubes (CNTs) with different structures for promoting catalytic activity and tuning product selectivity. The synergistic effect of Cs and PVP on Pt/Pd surface promotes hydrogenation activity. The synergy between Pd NPs and multi‐walled CNTs with the diameter of <8 nm greatly promoted the hydrogenation of C=C bond in CAL. The synergy between Pt NPs and single‐walled CNTs with the diameter of <2 nm effectively enhanced the hydrogenation of C=O bond in CAL. These synergistic effects are attributed to the suitable size and exposed (111) facets of metal NPs, the transfer of electrons and the interaction between metal and support.

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Kinetics of liquid-phase phenol hydrogenation enhanced by membrane dispersion

Liu

Zhao

et al. 2022

Chemical Engineering Science

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On the kinetics of catalytic hydrogenation over Pd nanoparticles regulated by various nucleosides

Cited by 5 publications

References 48 publications

Regulating Catalytic Activity of DNA‐Templated Silver Nanoclusters Based on their Differential Interactions with DNA Structures and Stimuli‐Responsive Structural Transition

Regulating Catalytic Activity of DNA‐Templated Silver Nanoclusters Based on their Differential Interactions with DNA Structures and Stimuli‐Responsive Structural Transition

Tunable Selective Hydrogenation of Cinnamaldehyde by Capped Pt/Pd Nanoparticles Supported on Carbon Nanotubes

Kinetics of liquid-phase phenol hydrogenation enhanced by membrane dispersion

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