TY - JOUR
T1 - Surface Modification for Improving the Photocatalytic Polymerization of 3,4-Ethylenedioxythiophene over Inorganic Lead Halide Perovskite Quantum Dots
AU - Li, Yue
AU - Shu, Qinghai
AU - Du, Qin
AU - Dai, Yi
AU - Zhao, Siwei
AU - Zhang, Jinxiang
AU - Li, Lijie
AU - Chen, Kun
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2020/1/8
Y1 - 2020/1/8
N2 - Inorganic lead halide perovskite quantum dots (iLHP-QDs) have recently been used in the photocatalytic reaction. However, the factors that influence the photocatalytic performance of the iLHP-QDs have not been fully investigated. Herein, we synthesized a series of iLHP-QDs with varied halide ratios (CsPbX3, X = I, I0.67Br0.33, I0.5Br0.5, I0.33Br0.67, Br) and studied their influence on the photocatalytic performance by monitoring the polymerization of 2,2′,5′,2″-ter-3,4-ethylenedioxythiophene (TerEDOT). The CsPbI3 QDs showed the best performance owing to their narrow band gap and low exciton binding energy. Moreover, the photocatalytic performance of the iLHP-QDs could be simply improved by being treated with methyl acetate, which can be attributed to the replacement of the oleic acid by the short acetate acid and the introduction of the traps on the surface of QDs in the post-treatment. These results could help design a more efficient photocatalytic system and further promote the application of iLHP-QDs.
AB - Inorganic lead halide perovskite quantum dots (iLHP-QDs) have recently been used in the photocatalytic reaction. However, the factors that influence the photocatalytic performance of the iLHP-QDs have not been fully investigated. Herein, we synthesized a series of iLHP-QDs with varied halide ratios (CsPbX3, X = I, I0.67Br0.33, I0.5Br0.5, I0.33Br0.67, Br) and studied their influence on the photocatalytic performance by monitoring the polymerization of 2,2′,5′,2″-ter-3,4-ethylenedioxythiophene (TerEDOT). The CsPbI3 QDs showed the best performance owing to their narrow band gap and low exciton binding energy. Moreover, the photocatalytic performance of the iLHP-QDs could be simply improved by being treated with methyl acetate, which can be attributed to the replacement of the oleic acid by the short acetate acid and the introduction of the traps on the surface of QDs in the post-treatment. These results could help design a more efficient photocatalytic system and further promote the application of iLHP-QDs.
KW - charge-transport efficiency
KW - exciton binding energy
KW - halide perovskite
KW - photocatalytic performance
KW - quantum dots
UR - http://www.scopus.com/inward/record.url?scp=85076985064&partnerID=8YFLogxK
U2 - 10.1021/acsami.9b14365
DO - 10.1021/acsami.9b14365
M3 - Article
C2 - 31805228
AN - SCOPUS:85076985064
SN - 1944-8244
VL - 12
SP - 451
EP - 460
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 1
ER -