TY - JOUR
T1 - Enhanced vapour sensing using silicon nanowire devices coated with Pt nanoparticle functionalized porous organic frameworks
AU - Cao, Anping
AU - Shan, Meixia
AU - Paltrinieri, Laura
AU - Evers, Wiel H.
AU - Chu, Liangyong
AU - Poltorak, Lukasz
AU - Klootwijk, Johan H.
AU - Seoane, Beatriz
AU - Gascon, Jorge
AU - Sudhölter, Ernst J.R.
AU - De Smet, Louis C.P.M.
PY - 2018/4/21
Y1 - 2018/4/21
N2 - Recently various porous organic frameworks (POFs, crystalline or amorphous materials) have been discovered, and used for a wide range of applications, including molecular separations and catalysis. Silicon nanowires (SiNWs) have been extensively studied for diverse applications, including as transistors, solar cells, lithium ion batteries and sensors. Here we demonstrate the functionalization of SiNW surfaces with POFs and explore its effect on the electrical sensing properties of SiNW-based devices. The surface modification by POFs was easily achieved by polycondensation on amine-modified SiNWs. Platinum nanoparticles were formed in these POFs by impregnation with chloroplatinic acid followed by chemical reduction. The final hybrid system showed highly enhanced sensitivity for methanol vapour detection. We envisage that the integration of SiNWs with POF selector layers, loaded with different metal nanoparticles will open up new avenues, not only in chemical and biosensing, but also in separations and catalysis.
AB - Recently various porous organic frameworks (POFs, crystalline or amorphous materials) have been discovered, and used for a wide range of applications, including molecular separations and catalysis. Silicon nanowires (SiNWs) have been extensively studied for diverse applications, including as transistors, solar cells, lithium ion batteries and sensors. Here we demonstrate the functionalization of SiNW surfaces with POFs and explore its effect on the electrical sensing properties of SiNW-based devices. The surface modification by POFs was easily achieved by polycondensation on amine-modified SiNWs. Platinum nanoparticles were formed in these POFs by impregnation with chloroplatinic acid followed by chemical reduction. The final hybrid system showed highly enhanced sensitivity for methanol vapour detection. We envisage that the integration of SiNWs with POF selector layers, loaded with different metal nanoparticles will open up new avenues, not only in chemical and biosensing, but also in separations and catalysis.
UR - http://www.scopus.com/inward/record.url?scp=85045843921&partnerID=8YFLogxK
U2 - 10.1039/c7nr07745a
DO - 10.1039/c7nr07745a
M3 - Article
AN - SCOPUS:85045843921
SN - 2040-3364
VL - 10
SP - 6884
EP - 6891
JO - Nanoscale
JF - Nanoscale
IS - 15
ER -