Electrochemical Deposition of platinum nanoparticles

Attachment of Platinum Nanoparticles to Substrates by Coating and Polyol Reduction of A Platinum Precursor

Cover ImageDepartment of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117574

J. Phys. Chem. C, 2011, 115 (17), pp 8519–8526

DOI: 10.1021/jp2001699

Section:

Abstract

Metal nanoparticles with good adhesion to substrates are important in practical applications, such as in catalysis, but directly depositing metal nanoparticles on substrates with good adhesion from a solution of their precursors has been rarely explored. This work reports a two-step method to deposit catalytic platinum (Pt) nanoparticles with good adhesion to substrates by solution processing and chemical reduction of a Pt precursor at a relatively low temperature. The first step is to coat a layer of H2PtCl6 on a substrate, such as fluorine-doped tin oxide (FTO), indium tin oxide (ITO), or conductive poly(3, 4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). The second step is to cast ethylene glycol (EG) on the H2PtCl6 layer and convert H2PtCl6 into metallic Pt nanoparticles by heating at 160 °C for a few minutes.Cover Image om the dendritic structure and has good adhesion to substrates. The good adhesion of the Pt nanoparticles to the substrates is attributed to the deposition of the Pt nanoparticles with high surface energy and the disappearance of EG shortly after the nanoparticle formation. The Pt nanoparticles cannot be removed from the substrates by adhesive tape peeling or sonication.Cover Image chemical reactions, such as oxidation of methanol and reduction of triiodide. They were also used as the counter electrode of dye-sensitized solar cells (DSCs). The DSCs exhibited light-to-electricity conversion efficiency of 8.02% under AM1.5G illumination (100 mW cm−2) and good stability.

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Cover ImageThis article has been cited by 6 ACS Journal articles (5 most recent appear below).

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    Novel and intriguing one-pot in situ method for the preparation of nanostructured Pt–clay materials under simple conditions is reported. In this synthesis, an inorganic clay mineral such as synthetic hectorite (“Laponite XLG”) or natural montmorillonite (“...

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Is what we see based on what we believe?

by PositiveOption

Because I believe
1 Corinthians 3:19 For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.
That means I see that, because the cell's nanotechnology and complexity on multiple levels is unmatched by all the engineers on the earth combined, it is a paradox if it comes from a natural cause
But Science does not they say there two ways to get a efficient design?
1.Designers apply their energy and intelligence to trial and error and create a efficient design like the motor of the space shuttle
2

It is a trust in knowlede and it's source

by PositiveOption

One who loves God will see what they believe and the ones who trust science will believe what they see
1 Corinthians 3:19 For the wisdom of this world is foolishness with God. For it is written, He taketh the wise in their own craftiness.
That means I see that, because the cell's nanotechnology and complexity on multiple levels is unmatched by all the engineers on the earth combined, it is a paradox if it comes from a natural cause
But Science does not see it that way they say there two ways to get a efficient design?

Nanotechnology is not ready . how about

by bionecr

People move some of their interest to something that could be ready sooner. Nanotechnology has been given alot of press, and that may have caused us to over look the possibilities of accupuncture. Or most people are idiots and a small percentage of us do most of the creative thinking Why havent we brought the technique of accupuncture into the 21st century. Hollow micro needles delivering anti biotics to localized areas of the body, or chemotherapy delivered into the closest cappilaries. Such a waste of accupuncturists today. What if this technique were used in areas around the lungs for tuberculosis would we have cleared up infections with less risk of creating drug esistant strains

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Carbon-based nanostructures are already being used as materials in solar cells with increasing frequency, yet their ability to enhance electrical performance has thus far been hampered by limited ability to assemble orderly networks using the materials.

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