Synthesis, Structure, and Catalytic Activity of Au/Poly(ethylene terephthalate) Composites

• Authors: A. Mashentseva , D. Borgekov , M. Zdorovets , A. Russakova
• Languages of publication: EN

Abstracts

EN

A standard technique of electroless gold deposition was modified by changing the composition of Ag-based activation solution. This allows preparation of two types of poly(ethyleneterephthalate) (PET) track etched membranes coated entirely with gold after 1, 5, and 24 h of reaction at 4°C. After dissolving the polymer template, gold nanotubes with outer diameter of 70-80 nm were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction. Reduction of p-nitrophenol to p-aminophenol by sodium borohydride was used to investigate the catalytic activity of as-prepared Au/PET membrane. All experiments were carried out for five consecutive cycles and rate constant of the pseudo-first-order reaction was calculated. It was found that Au/Ag/PET composites prepared after activation for 3 min in Ag-based solution (with potassium sodium tartrate as reducing agent) more effective catalyst (k=0.087 min^{-1}) was obtained when the Au/PET samples activated with ammonia silver nitrate solution (k=0.041 min^{-1}).

Keywords

EN

62.23.Pq; 82.65.+r; 82.20.Pm

Discipline

• 82.20.Pm: Rate constants, reaction cross sections, and activation energies
• 62.23.Pq: Composites (nanosystems embedded in a larger structure)
• 82.65.+r: Surface and interface chemistry; heterogeneous catalysis at surfaces(for temporal and spatial patterns in surface reactions, see 82.40.Np; see also 82.45.Jn Surface structure, reactivity and catalysis in electrochemistry; see also 68.43.-h Chemisorption/physisorption: adsorbates on surfaces)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 6
• Pages: 1263-1267

Dates

published

2014-06

Contributors

author

A. Mashentseva

• The L.N. Gumilyov Eurasian National University, Munaitpasov Str., 5, 010008, Astana, Kazakhstan
• Astana Branch of the Institute of Nuclear Physics, Abylai-khan Av., 2/1, 010008, Astana, Kazakhstan

author

D. Borgekov

• The L.N. Gumilyov Eurasian National University, Munaitpasov Str., 5, 010008, Astana, Kazakhstan

author

M. Zdorovets

• The L.N. Gumilyov Eurasian National University, Munaitpasov Str., 5, 010008, Astana, Kazakhstan
• Astana Branch of the Institute of Nuclear Physics, Abylai-khan Av., 2/1, 010008, Astana, Kazakhstan

author

A. Russakova

• The L.N. Gumilyov Eurasian National University, Munaitpasov Str., 5, 010008, Astana, Kazakhstan

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Identifiers

DOI

10.12693/APhysPolA.125.1263