Shape-controlled Pd nanocrystal–polyaniline heteronanostructures with modulated polyaniline thickness for efficient electrochemical ethanol oxidation

Kim, Heon Chul; Kim, Yena; Bando, Yoshio; Yamauchi, Yusuke; Hong, Jong Wook

doi:10.1039/c9ta08349a

Cited by 22 publications

(9 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the intensity of the two peaks was weak as a result of the low amount, high dispersion, and ultrafine sizes of the Pt NPs. PANI exhibited broad bands at 8.6°, 14.8°, 20.5°, and 25.3°, indicating the poor crystallinity of PANI and doped emeraldine salt form in PANI chains . PANI was prepared based on polymerization of aniline, and FT-IR was used to investigate the vibrational modes of PANI.…”

Section: Resultsmentioning

confidence: 99%

“…PANI exhibited broad bands at 8.6°, 14.8°, 20.5°, and 25.3°, indicating the poor crystallinity of PANI and doped emeraldine salt form in PANI chains. 27 PANI was prepared based on polymerization of aniline, and FT-IR was used to investigate the vibrational modes of PANI. As displayed in Figure 2B, the CC stretching vibration of the quinoid and benzenoid ring appeared at 1574 and 1487 cm −1 , revealing that emeraldine salt state existed in PANI.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Novel Cells-Based Electrochemical Sensor for Investigating the Interactions of Cancer Cells with Molecules and Screening Multitarget Anticancer Drugs

et al. 2020

View full text Add to dashboard Cite

A novel, effective, and label-free electrochemical sensor was constructed for investigating the interactions between cancer cells and molecules, based on targeted cancer cells immobilized on a bilayer architecture of N-doped graphene–Pt nanoparticles–chitosan (NGR–Pt–CS) and polyaniline (PANI). The interactions between folic acid (FA, positive control) and dimethyl sulfoxide (DMSO, negative control) and the choice of targeted cells, HepG2 and A549 cells, were investigated by measuring the current change of the sensor to [Fe(CN)6]3–/4– before and after interactions, and the binding constants were calculated to be 1.37 × 105 and 1.92 × 105 M–1 by sensing kinetics. Furthermore, 18 main components from Aidi injection (ADI) were studied to screen compounds that have interactions with different targeted cancer cells including HepG2 and A549 cells. The potential target groups of the interactions between screened active compounds and targeted cancer cells were analyzed through computer-aided molecular docking. In this sensing system, molecules did not require electrochemical activity, and different targeted cancer cells could be immobilized on the modified electrode surface, truly reflecting the categories and numbers of targets. Additionally, the proposed sensor specifically circumvented the current paradigm in most cells-based electrochemical sensors for screening drugs, in which the changes in cell behavior induced by drugs are monitored. This study provided a novel, simple, and generally applicable method for exploring the interaction of molecules with cancer cells and screening multitarget drugs.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Novel Cells-Based Electrochemical Sensor for Investigating the Interactions of Cancer Cells with Molecules and Screening Multitarget Anticancer Drugs

et al. 2020

View full text Add to dashboard Cite

show abstract

“…41,42 Furthermore, PANI contains a large number of lone electron N atoms, which can capture H + in solution to form protonated -NH 2 groups, promoting the enrichment of the proton concentration at the catalyst interface, thus improving the performance of the HER. [43][44][45] Inspired by the above advances, herein, we synthesized a PANI decorated mesoporous Ru lm on carbon paper (mRu@PANI/CP) by using a two-step electrochemical deposition method. The self-supported mesoporous structure can offer abundant catalytically active sites and provide transfer channels for the HER.…”

Section: Introductionmentioning

confidence: 99%

Interface functionalization of mesoporous ruthenium films with polyaniline for enhanced hydrogen evolution electrocatalysis at all pH values

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The electron structure of Pd is usually optimized by regulating its composition (for example, with metal or nonmetal doping) [ 35 , 36 , 37 ] and morphology (such as metallene, core/shell and defect). [ 38 , 39 , 40 ] Currently, Pd‐based metallenes are regarded as star materials owing to their special architectural feature. [ 41 , 42 ] First, the ultrathin 2D structure increases the electrochemical active area (ECSA) and improves the atomic availability of Pd.…”

Section: Introductionmentioning

confidence: 99%

Porous PdWM (M = Nb, Mo and Ta) Trimetallene for High C1 Selectivity in Alkaline Ethanol Oxidation Reaction

Qin

Huang

et al. 2021

Advanced Science

View full text Add to dashboard Cite

Direct ethanol fuel cells are among the most efficient and environmentally friendly energy-conversion devices and have been widely focused. The ethanol oxidation reaction (EOR) is a multielectron process with slow kinetics. The large amount of by-product generated by incomplete oxidation greatly reduces the efficiency of energy conversion through the EOR. In this study, a novel type of trimetallene called porous PdWM (M = Nb, Mo and Ta) is synthesized by a facile method. The mass activity (15.6 A mg Pd −1 ) and C1 selectivity (55.5%) of Pd 50 W 27 Nb 23 /C trimetallene, obtained after optimizing the compositions and proportions of porous PdWM, outperform those of commercial Pt/C (1.3 A mg Pt −1 , 5.9%), Pd/C (5.0 A mg Pd −1 , 7.2%), and Pd 97 W 3 /C bimetallene (9.5 A mg Pd −1 , 14.1%). The mechanism by which Pd 50 W 27 Nb 23 /C enhances the EOR performance is evaluated by in situ Fourier transform infrared spectroscopy and density functional theory calculations. It is found that W and Nb enhance the adsorption of CH 3 CH 2 OH and oxophilic high-valence Nb accelerates the subsequent oxidation of CO and -CH x species. Moreover, Nb promotes the cleavage of C-C bonds and increases the C1 selectivity. Pd 60 W 28 Mo 12 /C and Pd 64 W 27 Ta 9 /C trimetallene synthesized by the same method also exhibit excellent EOR performance.

show abstract

Shape-controlled Pd nanocrystal–polyaniline heteronanostructures with modulated polyaniline thickness for efficient electrochemical ethanol oxidation

Abstract: A facile synthesis method for shape-controlled Pd NC–PANI core–shell heteronanostructures with controllable PANI thickness for efficient electrochemical ethanol oxidation.

Cited by 22 publications

References 51 publications

Novel Cells-Based Electrochemical Sensor for Investigating the Interactions of Cancer Cells with Molecules and Screening Multitarget Anticancer Drugs

Novel Cells-Based Electrochemical Sensor for Investigating the Interactions of Cancer Cells with Molecules and Screening Multitarget Anticancer Drugs

Interface functionalization of mesoporous ruthenium films with polyaniline for enhanced hydrogen evolution electrocatalysis at all pH values

Porous PdWM (M = Nb, Mo and Ta) Trimetallene for High C1 Selectivity in Alkaline Ethanol Oxidation Reaction

Contact Info

Product

Resources

About