TY - JOUR
T1 - One-step preparation of microporous Pd@cPIM composite catalyst film for triphasic electrocatalysis
AU - Leong, Shi Xuan
AU - Carta, Mariolino
AU - Malpass-evans, Richard
AU - Mckeown, Neil B.
AU - Madrid, Elena
AU - Marken, Frank
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Triphasic microporous materials (containing solid, liquid, and gas) are of interest in electrocatalysis. In this exploratory study, a polymer of intrinsic microporosity (PIM-EA-TB) is impregnated with PdCl4 2 − metal precursor and vacuum‑carbonised to give an electrically conductive microporous heterocarbon with embedded Pd nanoparticles of typically 10–30 nm diameter. This microporous composite catalyst is formed (via spin-coating) as “flakes” of typically 100 nm thickness and 1 to 20 μm diameter that are readily re-deposited onto glassy carbon electrode substrates. Due to the triphasic conditions, Pd@cPIM electrocatalytic reactivity is high but only for gases (H2 oxidation or O2 reduction). This selectivity is observed even in the presence of excess formic acid fuel in the aqueous/liquid phase. The potential for application in membrane-less micro-fuel cells is discussed.
AB - Triphasic microporous materials (containing solid, liquid, and gas) are of interest in electrocatalysis. In this exploratory study, a polymer of intrinsic microporosity (PIM-EA-TB) is impregnated with PdCl4 2 − metal precursor and vacuum‑carbonised to give an electrically conductive microporous heterocarbon with embedded Pd nanoparticles of typically 10–30 nm diameter. This microporous composite catalyst is formed (via spin-coating) as “flakes” of typically 100 nm thickness and 1 to 20 μm diameter that are readily re-deposited onto glassy carbon electrode substrates. Due to the triphasic conditions, Pd@cPIM electrocatalytic reactivity is high but only for gases (H2 oxidation or O2 reduction). This selectivity is observed even in the presence of excess formic acid fuel in the aqueous/liquid phase. The potential for application in membrane-less micro-fuel cells is discussed.
KW - CO reduction
KW - Fuel cell
KW - Gas binding
KW - Microporosity
KW - Triple phase reaction zone
UR - http://www.scopus.com/inward/record.url?scp=85034091243&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2017.11.007
DO - 10.1016/j.elecom.2017.11.007
M3 - Article
AN - SCOPUS:85034091243
SN - 1388-2481
VL - 86
SP - 17
EP - 20
JO - Electrochemistry Communications
JF - Electrochemistry Communications
ER -