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Sorgfältiges Design kann neuartige biologisch inspirierte Materialien ergeben, die ein verbessertes Ansprechverhalten zeigen. Ein gentechnisch hergestelltes, elastisches Protein hat sowohl eine untere als auch eine obere kritische Entmischungstemperatur (LCST bzw. UCST, siehe Bild); sein photopysikalisches Verhalten hängt vom pH‐Wert der Lösung ab.

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Corrosion resistance of iron (Fe) was achieved by coating it with a reduced graphene oxide ink. The Fe surface with the graphene oxide ink coating exhibited improved corrosion resistance in an aggressive chloride environment, which is attributed to the excellent barrier property of graphene. The advantage of this method is that graphene can be deposited by using a solution process that is easy, reproducible, and can be used to coat objects of any dimensions just like conventional paints or coatings.

Pt NPs were in situ synthesised on poly(sodium styrene sulfonate) functionalized graphene supports (PSS-G) in aqueous solution. We investigate the reduction of graphene oxide, PSS adsorption on reduced graphene, and Pt NP functionalization by X-ray photoelectron spectroscopy (XPS), X-ray absorption fine structure studies (XAFS), Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy and transmission electron microscopy. The as-prepared Pt on PSS-G sample (Pt-PSS-G) was used directly as a catalyst ink without further treatment. The use of PSS as a stabilizer prevents stacking of reduced graphene sheets, binds Pt NPs, and promotes mass transport of reaction species. The as-prepared Pt-PSS-G exhibits higher activity and stability for methanol oxidation reaction than Pt NPs supported on pristine graphene sheets (Pt-G). The higher activity is due to the presence of Pt NPs on the surface of the PSS-G support, which provides an integrated electron and mass transport pathway for every Pt NP. This work realizes both scalable and greener production of highly efficient catalysts, and would be valuable for practical applications of graphene based fuel cell catalysts.