Abstract
For the first time, double-deck WO3/BiVO4 inverse opal photoanodes (DDIO-WO3/BiVO4) were prepared by swelling-shrinking mediated polystyrene template synthetic routes, and the use of the photoanodes in photoelectrochemical cells under simulated solar light was investigated. The double-deck photoanodes represented the compact interface between WO3 and BiVO4, inheriting the periodically ordered macroporous nanostructure. More significantly, the DDIO-WO3/BiVO4 inverse opal photoanodes prepared from the optimized fabrication condition demonstrated a photocurrent that was ∼40 times higher than that of the pure inverse opal WO3 photoanodes at a bias of 1.23 V vs RHE. Even without an added catalyst, they produce an outstanding photocurrent density of ∼3.3 mA/cm2 at a bias of 1.23 V vs RHE, which profits from improving the poor charge carrier mobility of BiVO4 by combining it with a WO3 skeleton and a shrouded bilayer inverse opal structure with a large surface area and good contact with the electrolyte. (Chemical Equation Presented).
| Original language | English |
|---|---|
| Pages (from-to) | 5592-5597 |
| Number of pages | 6 |
| Journal | Chemistry of Materials |
| Volume | 26 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - 2014 Oct 14 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Chemical Engineering(all)
- Materials Chemistry
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Double-deck inverse opal photoanodes : Efficient light absorption and charge separation in heterojunction. / Ma, Ming; Kim, Jung Kyu; Zhang, Kan; Shi, Xinjian; Kim, Sung June; Moon, Jun Hyuk; Park, Jong Hyeok.
In: Chemistry of Materials, Vol. 26, No. 19, 14.10.2014, p. 5592-5597.Research output: Contribution to journal › Article
TY - JOUR
T1 - Double-deck inverse opal photoanodes
T2 - Efficient light absorption and charge separation in heterojunction
AU - Ma, Ming
AU - Kim, Jung Kyu
AU - Zhang, Kan
AU - Shi, Xinjian
AU - Kim, Sung June
AU - Moon, Jun Hyuk
AU - Park, Jong Hyeok
PY - 2014/10/14
Y1 - 2014/10/14
N2 - For the first time, double-deck WO3/BiVO4 inverse opal photoanodes (DDIO-WO3/BiVO4) were prepared by swelling-shrinking mediated polystyrene template synthetic routes, and the use of the photoanodes in photoelectrochemical cells under simulated solar light was investigated. The double-deck photoanodes represented the compact interface between WO3 and BiVO4, inheriting the periodically ordered macroporous nanostructure. More significantly, the DDIO-WO3/BiVO4 inverse opal photoanodes prepared from the optimized fabrication condition demonstrated a photocurrent that was ∼40 times higher than that of the pure inverse opal WO3 photoanodes at a bias of 1.23 V vs RHE. Even without an added catalyst, they produce an outstanding photocurrent density of ∼3.3 mA/cm2 at a bias of 1.23 V vs RHE, which profits from improving the poor charge carrier mobility of BiVO4 by combining it with a WO3 skeleton and a shrouded bilayer inverse opal structure with a large surface area and good contact with the electrolyte. (Chemical Equation Presented).
AB - For the first time, double-deck WO3/BiVO4 inverse opal photoanodes (DDIO-WO3/BiVO4) were prepared by swelling-shrinking mediated polystyrene template synthetic routes, and the use of the photoanodes in photoelectrochemical cells under simulated solar light was investigated. The double-deck photoanodes represented the compact interface between WO3 and BiVO4, inheriting the periodically ordered macroporous nanostructure. More significantly, the DDIO-WO3/BiVO4 inverse opal photoanodes prepared from the optimized fabrication condition demonstrated a photocurrent that was ∼40 times higher than that of the pure inverse opal WO3 photoanodes at a bias of 1.23 V vs RHE. Even without an added catalyst, they produce an outstanding photocurrent density of ∼3.3 mA/cm2 at a bias of 1.23 V vs RHE, which profits from improving the poor charge carrier mobility of BiVO4 by combining it with a WO3 skeleton and a shrouded bilayer inverse opal structure with a large surface area and good contact with the electrolyte. (Chemical Equation Presented).
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U2 - 10.1021/cm502073d
DO - 10.1021/cm502073d
M3 - Article
AN - SCOPUS:84924362162
VL - 26
SP - 5592
EP - 5597
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 19
ER -