Preparation of nanoporous BiVO4/TiO2/Ti film through electrodeposition for photoelectrochemical water splitting
A nanoporous BiVO4/TiO2/Ti film was successfully fabricated by electrodepositing a nanoporous BiOI film on nanoporous TiO2 arrays followed by annealing at 450°C for 2 h. The electrodeposition of BiOI film was carried out at different times (10, 30, 100, 500 and 1000 s) in Bi(NO3)3 and KI solution. T...
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2018-01-01
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Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.180728 |
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doaj-353a5148b83045f999cd7ae2ec32a9ba2020-11-25T03:57:37ZengThe Royal SocietyRoyal Society Open Science2054-57032018-01-015910.1098/rsos.180728180728Preparation of nanoporous BiVO4/TiO2/Ti film through electrodeposition for photoelectrochemical water splittingDong HongxingLiu QiupingHe YuehuiA nanoporous BiVO4/TiO2/Ti film was successfully fabricated by electrodepositing a nanoporous BiOI film on nanoporous TiO2 arrays followed by annealing at 450°C for 2 h. The electrodeposition of BiOI film was carried out at different times (10, 30, 100, 500 and 1000 s) in Bi(NO3)3 and KI solution. The morphological, crystallographic and photoelectrochemical properties of the prepared BiVO4/TiO2/Ti heterojunction film were examined by using different characterization techniques. UV–vis spectrum absorption studies confirmed an increase in absorption intensities with increasing electrodeposition time, and the band gap of BiVO4/TiO2/Ti film is lower than that of TiO2/Ti. The photocatalytic efficiency of BiVO4/TiO2/Ti heterojunction film was higher compared to that of the TiO2/Ti film owing to the longer transient decay time for BiVO4/TiO2/Ti film (3.2 s) than that of TiO2/Ti film (0.95 s) in our experiment. The BiVO4/TiO2/Ti heterojunction film prepared by electrodeposition for 1000 s followed by annealing showed a high photocurrent density of 0.3363 mA cm−2 at 0.6 V versus saturated calomel electrode. Furthermore, the lowest charge transfer resistance from electrochemical impedance spectroscopy was recorded for the BiVO4/TiO2/Ti film (1000 s) under irradiation.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.180728bivo4/tio2/ti photoelectrodeselectrodepositionphotocurrent densitywater splitting |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dong Hongxing Liu Qiuping He Yuehui |
spellingShingle |
Dong Hongxing Liu Qiuping He Yuehui Preparation of nanoporous BiVO4/TiO2/Ti film through electrodeposition for photoelectrochemical water splitting Royal Society Open Science bivo4/tio2/ti photoelectrodes electrodeposition photocurrent density water splitting |
author_facet |
Dong Hongxing Liu Qiuping He Yuehui |
author_sort |
Dong Hongxing |
title |
Preparation of nanoporous BiVO4/TiO2/Ti film through electrodeposition for photoelectrochemical water splitting |
title_short |
Preparation of nanoporous BiVO4/TiO2/Ti film through electrodeposition for photoelectrochemical water splitting |
title_full |
Preparation of nanoporous BiVO4/TiO2/Ti film through electrodeposition for photoelectrochemical water splitting |
title_fullStr |
Preparation of nanoporous BiVO4/TiO2/Ti film through electrodeposition for photoelectrochemical water splitting |
title_full_unstemmed |
Preparation of nanoporous BiVO4/TiO2/Ti film through electrodeposition for photoelectrochemical water splitting |
title_sort |
preparation of nanoporous bivo4/tio2/ti film through electrodeposition for photoelectrochemical water splitting |
publisher |
The Royal Society |
series |
Royal Society Open Science |
issn |
2054-5703 |
publishDate |
2018-01-01 |
description |
A nanoporous BiVO4/TiO2/Ti film was successfully fabricated by electrodepositing a nanoporous BiOI film on nanoporous TiO2 arrays followed by annealing at 450°C for 2 h. The electrodeposition of BiOI film was carried out at different times (10, 30, 100, 500 and 1000 s) in Bi(NO3)3 and KI solution. The morphological, crystallographic and photoelectrochemical properties of the prepared BiVO4/TiO2/Ti heterojunction film were examined by using different characterization techniques. UV–vis spectrum absorption studies confirmed an increase in absorption intensities with increasing electrodeposition time, and the band gap of BiVO4/TiO2/Ti film is lower than that of TiO2/Ti. The photocatalytic efficiency of BiVO4/TiO2/Ti heterojunction film was higher compared to that of the TiO2/Ti film owing to the longer transient decay time for BiVO4/TiO2/Ti film (3.2 s) than that of TiO2/Ti film (0.95 s) in our experiment. The BiVO4/TiO2/Ti heterojunction film prepared by electrodeposition for 1000 s followed by annealing showed a high photocurrent density of 0.3363 mA cm−2 at 0.6 V versus saturated calomel electrode. Furthermore, the lowest charge transfer resistance from electrochemical impedance spectroscopy was recorded for the BiVO4/TiO2/Ti film (1000 s) under irradiation. |
topic |
bivo4/tio2/ti photoelectrodes electrodeposition photocurrent density water splitting |
url |
https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.180728 |
work_keys_str_mv |
AT donghongxing preparationofnanoporousbivo4tio2tifilmthroughelectrodepositionforphotoelectrochemicalwatersplitting AT liuqiuping preparationofnanoporousbivo4tio2tifilmthroughelectrodepositionforphotoelectrochemicalwatersplitting AT heyuehui preparationofnanoporousbivo4tio2tifilmthroughelectrodepositionforphotoelectrochemicalwatersplitting |
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1724459671982440448 |