TY - JOUR
T1 - Polymers of intrinsic microporosity in electrocatalysis
T2 - Novel pore rigidity effects and lamella palladium growth
AU - Xia, Fengjie
AU - Pan, Mu
AU - Mu, Shichun
AU - Malpass-Evans, Richard
AU - Carta, Mariolino
AU - Mckeown, Neil B.
AU - Attard, Gary A.
AU - Brew, Ashley
AU - Morgan, David J.
AU - Marken, Frank
PY - 2014/5/10
Y1 - 2014/5/10
N2 - Two polymers (i) the polymer of intrinsic microporosity (or PIM) ethanoanthracene TB-PIM (P1, PIM-EA-TB, MW 70 kDa, BET surface area 1027 m2 g-1) and (ii) the structurally less rigid polymer based on dimethyldiphenylmethane units (P2, BDMPM-TB, MW 100 kDa, BET surface area 47 m2g-1) are compared to highlight the benefits of the newly emerging PIM membrane materials in electrocatalysis and nanostructure formation. Binding sites and binding ability/capacity in aqueous environments are compared in films deposited onto glassy carbon electrodes for (i) indigo carmine dianion immobilisation (weakly binding from water-ethanol) and (ii) PdCl4 2- immobilisation (strongly binding from acidic media). Nano-lamella growth for Pd metal during electro-reduction of PdCl4 2- is observed. Electrocatalytic oxidation of formic acid (at pH 6) is investigated for P1 and P2 as a function of film thickness. The more rigid high BET surface area PIM material P1 exhibits "open-pore" characteristics with much more promising electrocatalytic activity at Pd lamella within polymer pores.
AB - Two polymers (i) the polymer of intrinsic microporosity (or PIM) ethanoanthracene TB-PIM (P1, PIM-EA-TB, MW 70 kDa, BET surface area 1027 m2 g-1) and (ii) the structurally less rigid polymer based on dimethyldiphenylmethane units (P2, BDMPM-TB, MW 100 kDa, BET surface area 47 m2g-1) are compared to highlight the benefits of the newly emerging PIM membrane materials in electrocatalysis and nanostructure formation. Binding sites and binding ability/capacity in aqueous environments are compared in films deposited onto glassy carbon electrodes for (i) indigo carmine dianion immobilisation (weakly binding from water-ethanol) and (ii) PdCl4 2- immobilisation (strongly binding from acidic media). Nano-lamella growth for Pd metal during electro-reduction of PdCl4 2- is observed. Electrocatalytic oxidation of formic acid (at pH 6) is investigated for P1 and P2 as a function of film thickness. The more rigid high BET surface area PIM material P1 exhibits "open-pore" characteristics with much more promising electrocatalytic activity at Pd lamella within polymer pores.
UR - http://www.scopus.com/inward/record.url?scp=84899444347&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1016/j.electacta.2013.08.169
U2 - 10.1016/j.electacta.2013.08.169
DO - 10.1016/j.electacta.2013.08.169
M3 - Article
SN - 0013-4686
VL - 128
SP - 3
EP - 9
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -