TY - JOUR
T1 - Exposing TiO2 (001) crystal facet in nano Au-TiO2 heterostructures for enhanced photodegradation of methylene blue
AU - Khalil, Munawar
AU - Anggraeni, Ervita S.
AU - Ivandini, Tribidasari A.
AU - Budianto, Emil
N1 - Funding Information:
We greatly appreciate the financial supported provided by the Directorate of Research and Community Engagement (DRPM), University of Indonesia through Hibah Penelitian Q1Q2 2019 (Contract No. NKB-0275/UN2.R3.1/HKP.05.00/2019 ).
Funding Information:
We greatly appreciate the financial supported provided by the Directorate of Research and Community Engagement (DRPM), University of Indonesia through Hibah Penelitian Q1Q2 2019 (Contract No. NKB-0275/UN2.R3.1/HKP.05.00/2019).
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - This article reports an investigation on the effect of crystal facet of TiO2 in nano Au-TiO2 heterostructures for enhanced photocatalytic degradation of organic dyes. Here, nano Au-TiO2 heterostructures with two distinct TiO2 morphologies, i.e. nanospindles and nanocubes, were successfully prepared and utilized for photodegradation of methylene blue (MB). Based on the photocatalytic experiments, it is found that TiO2 nanospindles exhibited superior photocatalytic performance than TiO2 nanocubes which primarily due to the exposure of (001) crystal facet. It is observed that the exposure of (001) crystal facet was able to increase the photocatalytic reaction rate by four folds. Additionally, integration with Au nanoparticles was also found to have a synergistic effect in photodegradation activity due to the presence of surface plasmon resonance (SPR) effect. According to the result, Au-TiO2 nanospindles was found to be most efficient catalyst for photocatalytic degradation of MB with pseudo-first order reaction rate of 0.1570 min−1.
AB - This article reports an investigation on the effect of crystal facet of TiO2 in nano Au-TiO2 heterostructures for enhanced photocatalytic degradation of organic dyes. Here, nano Au-TiO2 heterostructures with two distinct TiO2 morphologies, i.e. nanospindles and nanocubes, were successfully prepared and utilized for photodegradation of methylene blue (MB). Based on the photocatalytic experiments, it is found that TiO2 nanospindles exhibited superior photocatalytic performance than TiO2 nanocubes which primarily due to the exposure of (001) crystal facet. It is observed that the exposure of (001) crystal facet was able to increase the photocatalytic reaction rate by four folds. Additionally, integration with Au nanoparticles was also found to have a synergistic effect in photodegradation activity due to the presence of surface plasmon resonance (SPR) effect. According to the result, Au-TiO2 nanospindles was found to be most efficient catalyst for photocatalytic degradation of MB with pseudo-first order reaction rate of 0.1570 min−1.
KW - Crystal facet
KW - Methylene blue
KW - Photodegradation
KW - Plasmonic resonance
KW - TiO
UR - http://www.scopus.com/inward/record.url?scp=85067009902&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2019.05.232
DO - 10.1016/j.apsusc.2019.05.232
M3 - Article
AN - SCOPUS:85067009902
SN - 0169-4332
VL - 487
SP - 1376
EP - 1384
JO - Applied Surface Science
JF - Applied Surface Science
ER -