Intrinsically Porous Polymer Protects Catalytic Gold Particles for Enzymeless Glucose Oxidation. Issue 5 (9th April 2014)

• Record Type: Journal Article
• Authors: Rong, Yuanyang; Malpass‐Evans, Richard; Carta, Mariolino; McKeown, Neil B.; Attard, Gary A.; Marken, Frank
• Is Part Of: Electroanalysis. Volume 26:Issue 5(2014:May)
• Page Start: 904
• Page End: 909
• Publication Date: 2014-04-09
• Subjects: Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.201400085
• Languages: English
• ISSNs: 1040-0397

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The enzymeless glucose oxidation process readily occurs on nano‐gold electrocatalyst at pH 7, but it is highly susceptible to poisoning (competitive binding), for example from protein or chloride. Is it shown here that gold nanoparticle catalyst can be protected against poisoning by a polymer of intrinsic microporosity (PIM‐EA‐TB with BET surface area 1027 m² g⁻¹). This PIM material when protonated, achieves a triple catalyst protection effect by (i) size selective repulsion of larger protein molecules (albumins) and (ii) membrane ion selection effects, and (iii) membrane ion activity effects. PIM materials allow "environmental control" to be introduced in electrocatalytic processes.</p> </abstract>