Egg-shell membrane mimicking synthetic polymer membrane supported palladium nanoparticles for catalyzing reduction of uranyl(VI) ions

Chappa, Sankararao; Mhatre, Amol; Adya, V. C.; Pandey, Ashok K.

doi:10.1016/j.apcatb.2016.10.004

Cited by 30 publications

(21 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…8d shows a new band at about 580 nm associated with the surface plasmon of AuNPs [42], which proves the successful deposition of PDA and AuNPs on the ITO electrodes. In addition, the UV-vis absorption intensity increases with increase in thickness, which is in accord with Lambert-Beer's law and similar literatures [43,44]. The results of UV-vis measurements are in accordance with the increasing thickness of the membranes as shown in Fig.…”

Section: Effects Of Aunp and Pda Modification On The Electrochemical supporting

confidence: 93%

A multilayer gold nanoparticle-polydopamine hybrid membrane-modified indium tin oxide electrode for selective sensing of dopamine in the present of ascorbic acid

Zhang

et al. 2017

Ionics

View full text Add to dashboard Cite

In this paper, dopamine (DA) ionic states in different pH solutions and corresponding electrochemical reaction characteristics on indium tin oxide (ITO) electrodes were discussed in detail. Polydopamine (PDA) and gold nanoparticles (AuNPs) have been used to modify ITO electrodes for selective sensing of DA in the present of ascorbic acid (AA). The impedance of PDA membranes and the catalysis of AuNPs on the interfacial properties of the modified electrodes were studied tentatively. Experiments show that a three-layer AuNP-PDA hybrid membrane-modified ITO electrode has an excellent property in DA detection without being interfered by the existence of AA. The sensitivity of DA detection was obtained to be 0.300 μA/μM with a detection limit of 0.06 μM (S/N = 3) in chronoamperometry measurement. The application of the electrode was verified in real sample analysis with both differential pulse voltammetry and chronoamperometry measurements.

show abstract

Section: Effects Of Aunp and Pda Modification On The Electrochemical supporting

confidence: 93%

A multilayer gold nanoparticle-polydopamine hybrid membrane-modified indium tin oxide electrode for selective sensing of dopamine in the present of ascorbic acid

Zhang

et al. 2017

Ionics

View full text Add to dashboard Cite

show abstract

“…The host electrospun PES fiber mat did not contain any functionality to hold the precursor Pd 2+ ions and subsequently to reduce them to form the Pd NPs. To make dual‐functional host, the host electrospun PES microfiber mat was grafted with poly(GMA) that could be used to link the reducing moiety such as hydrazine covalently with PES chains as shown in Scheme . The choice of PES was based on the fact that it undergoes photolysis under UV‐light irradiation to form free radicals and initiate graft‐polymerization of GMA as shown in Scheme .…”

Section: Resultsmentioning

confidence: 99%

“…After polymerization, the microfiber mat samples were first washed thoroughly with ethanol and then with water to remove unpolymerized components. The choice of solution composition and UV‐irradiation time was based on the reported optimization of the in situ grafting/polymerization methods in terms of optimum yield …”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Dual-Functional Grafted Electrospun Polymer Microfiber Scaffold Hosted Palladium Nanoparticles for Catalyzing Redox Reactions

Chappa

Bharath

Oommen

et al. 2017

Macromol. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

Porous poly(ether sulfone) (PES) microfiber mat has been prepared by electrospinning technique using the optimized conditions. The reducing moiety has been attached covalently to the PES microfiber mat by UV‐graft polymerization of glycidylmethacrylate, and reacting subsequently with hydrazine via epoxy ring opening. The grafted polymer shell around porous microfiber has been found to perform the reduction of precursor ions by grafted hydrazine which leads to the nucleation and growth of Pd nanoparticles (NPs) on the host matrix itself. The catalytic activities and reduction kinetics of the microfiber hosted Pd NPs have been examined in the reductions of CrVI and UVI ions with in situ hydrogen generated by the formic acid decomposition at 50 °C, and p‐nitrophenol with borohydride/hydrazine at room temperature. Thus, hosted Pd NPs exhibit higher catalytic activity with respect to that reported in literature, and also the host matrix provides reasonably good recyclability and shelf‐life to Pd NPs.

show abstract

“…Uranium is one of the most important elements in the research of actinides, whose discrete 5f and 6d orbitals interact with the 2p orbitals of oxygen to form kinds of very important uranyl ions . Salophen is an important organic ligand containing the imine characteristic group (RC═N), which can form complexes with various metal ions .…”

Section: Introductionmentioning

confidence: 99%

Theoretical investigation into the coordination of R‐/S‐asymmetric uranyl–salophens containing six‐membered ring lactam with cis−/trans‐cyclohexylamines

Yang

Kong

et al. 2018

Applied Organom Chemis

View full text Add to dashboard Cite

A six‐membered ring lactam derivative was introduced in a parallel manner into uranyl–salophens with R/S configuration (R‐/S‐AUSRLs), which were used as receptors to coordinate with guests of cis−/trans‐methylcyclohexylamines (cis−/trans‐MCHAs). Using density functional theory calculations at the B3LYP/6‐311G** level and RECP, an insight into the coordination complexes of the R‐/S‐AUSRLs with cis−/trans‐MCHAs was obtained. The results showed that the U atoms of receptors could coordinate with the N atoms of four kinds of cis−/trans‐1,2 or − 1,4 guests, but the two kinds of cis−/trans‐1,3 guests could not be converged by the same method in the process of structural optimization due to steric hindrance, and thus the cis−/trans‐1,3 guests could not be coordinated with the R‐/S‐AUSRLs. The mode of coordination of the R‐/S‐AUSRLs with the guests displayed a significant difference. And the change of R‐AUSRL coordination ability to the cis−/trans‐MCHAs was very large, but that of S‐AUSRL was small. Overall, the stability of the R‐series coordination complexes was higher than that of the corresponding S‐series coordination complexes, and the R‐AUSRL receptor had better coordination selectivity and higher molecular recognition to the cis−/trans‐MCHA guests than the S‐AUSRL receptor. However, the coordination ability of S‐AUSRL with the cis−/trans‐MCHAs was stronger than that of R‐AUSRL. It was expected that these results could provide insightful information and theoretical guidance for understanding the molecular recognition of R‐/S‐AUSRLs for cis−/trans‐type cyclohexylamine derivatives.

show abstract

Egg-shell membrane mimicking synthetic polymer membrane supported palladium nanoparticles for catalyzing reduction of uranyl(VI) ions

Cited by 30 publications

References 59 publications

A multilayer gold nanoparticle-polydopamine hybrid membrane-modified indium tin oxide electrode for selective sensing of dopamine in the present of ascorbic acid

A multilayer gold nanoparticle-polydopamine hybrid membrane-modified indium tin oxide electrode for selective sensing of dopamine in the present of ascorbic acid

Dual-Functional Grafted Electrospun Polymer Microfiber Scaffold Hosted Palladium Nanoparticles for Catalyzing Redox Reactions

Theoretical investigation into the coordination of R‐/S‐asymmetric uranyl–salophens containing six‐membered ring lactam with cis−/trans‐cyclohexylamines

Contact Info

Product

Resources

About