TY - JOUR
T1 - Coupled porosity and heterojunction engineering
T2 - MOF-derived porous Co3O4 embedded on TiO2 nanotube arrays for water remediation
AU - Dong, Jianing
AU - Zhang, Xinnan
AU - Dong, Xiuli
AU - Ng, Kim Hoong
AU - Xie, Zailai
AU - Chen, I. Wen Peter
AU - Ng, Yun Hau
AU - Huang, Jianying
AU - Lai, Yuekun
N1 - Funding Information:
The authors thank the National Natural Science Foundation of China ( 22075064 , 51972063 ), Natural Science Foundation of Fujian Province ( 2020J06038 , 2019J01256 ), 111 Project (No. D17005 ), and the funds from the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/7
Y1 - 2021/7
N2 - Strive to develop the interaction and efficient co-catalysts is one of the vital projects in realizing hybrid photocatalytic systems for water remediation. In this work, p-type porous Co3O4 was embedded onto n-type vertical TiO2 nanotube via an in-situ thermal etching method. ZIF-67 was employed as the structural template for Co3O4, which then augmented the light harvesting ability of the resultant photocatalyst. Such improvement was prompted by the light reflecting and directing attributes of porous Co3O4. Therefore, a remarkable MB removal rate was attained under sunlight irradiation, with superoxide radical being identified as the major reactive species. Photoelectric properties evaluation also verified that the p-n heterojunction developed herein exhibits outstanding charges separation ability with low impedance, particularly under light irradiation. This work highlights the idea on coupling both porous and p-n heterojunction engineering in augmenting photoactivity of catalyst, while offering insights in such structure-mediating approach.
AB - Strive to develop the interaction and efficient co-catalysts is one of the vital projects in realizing hybrid photocatalytic systems for water remediation. In this work, p-type porous Co3O4 was embedded onto n-type vertical TiO2 nanotube via an in-situ thermal etching method. ZIF-67 was employed as the structural template for Co3O4, which then augmented the light harvesting ability of the resultant photocatalyst. Such improvement was prompted by the light reflecting and directing attributes of porous Co3O4. Therefore, a remarkable MB removal rate was attained under sunlight irradiation, with superoxide radical being identified as the major reactive species. Photoelectric properties evaluation also verified that the p-n heterojunction developed herein exhibits outstanding charges separation ability with low impedance, particularly under light irradiation. This work highlights the idea on coupling both porous and p-n heterojunction engineering in augmenting photoactivity of catalyst, while offering insights in such structure-mediating approach.
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U2 - 10.1016/j.chemosphere.2021.129799
DO - 10.1016/j.chemosphere.2021.129799
M3 - Article
C2 - 33545593
AN - SCOPUS:85100395522
SN - 0045-6535
VL - 274
JO - Chemosphere
JF - Chemosphere
M1 - 129799
ER -