BiVO<sub>4</sub> Ceramic Photoanode with Enhanced Photoelectrochemical Stability
Monoclinic bismuth vanadate (BiVO<sub>4</sub>) is an attractive material with which to fabricate photoanodes due to its suitable band structure and excellent photoelectrochemical (PEC) performance. However, the poor PEC stability originating from its severe photo-corrosion greatly restri...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/9/2404 |
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| author | Liren Zheng Minrui Wang Yujie Li Fahao Ma Jiyu Li Weiyi Jiang Mu Liu Hefeng Cheng Zeyan Wang Zhaoke Zheng Peng Wang Yuanyuan Liu Ying Dai Baibiao Huang |
| author_facet | Liren Zheng Minrui Wang Yujie Li Fahao Ma Jiyu Li Weiyi Jiang Mu Liu Hefeng Cheng Zeyan Wang Zhaoke Zheng Peng Wang Yuanyuan Liu Ying Dai Baibiao Huang |
| author_sort | Liren Zheng |
| collection | DOAJ |
| description | Monoclinic bismuth vanadate (BiVO<sub>4</sub>) is an attractive material with which to fabricate photoanodes due to its suitable band structure and excellent photoelectrochemical (PEC) performance. However, the poor PEC stability originating from its severe photo-corrosion greatly restricts its practical applications. In this paper, pristine and Mo doped BiVO<sub>4</sub> ceramics were prepared using the spark plasma sintering (SPS) method, and their photoelectrochemical properties as photoanodes were investigated. The as-prepared 1% Mo doped BiVO<sub>4</sub> ceramic (Mo-BVO (C)) photoanode exhibited enhanced PEC stability compared to 1% Mo doped BiVO<sub>4</sub> films on fluorine doped Tin Oxide (FTO) coated glass substrates (Mo-BVO). Mo-BVO (C) exhibited a photocurrent density of 0.54 mA/cm<sup>2</sup> and remained stable for 10 h at 1.23 V vs. reversible hydrogen electrode (RHE), while the photocurrent density of the Mo-BVO decreased from 0.66 mA/cm<sup>2</sup> to 0.11 mA/cm<sup>2</sup> at 1.23 V vs. RHE in 4 h. The experimental results indicated that the enhanced PEC stability of the Mo-BVO (C) could be attributed to its higher crystallinity, which could effectively inhibit the dissociation of vanadium in BiVO<sub>4</sub> during the PEC process. This work may illustrate a novel ceramic design for the improvement of the stability of BiVO<sub>4</sub> photoanodes, and might provide a general strategy for the improvement of the PEC stability of metal oxide photoanodes. |
| first_indexed | 2024-03-10T07:22:04Z |
| format | Article |
| id | doaj.art-4bc73a7624cc471481acbbb212e01773 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T07:22:04Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-4bc73a7624cc471481acbbb212e017732023-11-22T14:32:06ZengMDPI AGNanomaterials2079-49912021-09-01119240410.3390/nano11092404BiVO<sub>4</sub> Ceramic Photoanode with Enhanced Photoelectrochemical StabilityLiren Zheng0Minrui Wang1Yujie Li2Fahao Ma3Jiyu Li4Weiyi Jiang5Mu Liu6Hefeng Cheng7Zeyan Wang8Zhaoke Zheng9Peng Wang10Yuanyuan Liu11Ying Dai12Baibiao Huang13State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaSchool of Physics, Shandong University, Jinan 250100, ChinaState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, ChinaMonoclinic bismuth vanadate (BiVO<sub>4</sub>) is an attractive material with which to fabricate photoanodes due to its suitable band structure and excellent photoelectrochemical (PEC) performance. However, the poor PEC stability originating from its severe photo-corrosion greatly restricts its practical applications. In this paper, pristine and Mo doped BiVO<sub>4</sub> ceramics were prepared using the spark plasma sintering (SPS) method, and their photoelectrochemical properties as photoanodes were investigated. The as-prepared 1% Mo doped BiVO<sub>4</sub> ceramic (Mo-BVO (C)) photoanode exhibited enhanced PEC stability compared to 1% Mo doped BiVO<sub>4</sub> films on fluorine doped Tin Oxide (FTO) coated glass substrates (Mo-BVO). Mo-BVO (C) exhibited a photocurrent density of 0.54 mA/cm<sup>2</sup> and remained stable for 10 h at 1.23 V vs. reversible hydrogen electrode (RHE), while the photocurrent density of the Mo-BVO decreased from 0.66 mA/cm<sup>2</sup> to 0.11 mA/cm<sup>2</sup> at 1.23 V vs. RHE in 4 h. The experimental results indicated that the enhanced PEC stability of the Mo-BVO (C) could be attributed to its higher crystallinity, which could effectively inhibit the dissociation of vanadium in BiVO<sub>4</sub> during the PEC process. This work may illustrate a novel ceramic design for the improvement of the stability of BiVO<sub>4</sub> photoanodes, and might provide a general strategy for the improvement of the PEC stability of metal oxide photoanodes.https://www.mdpi.com/2079-4991/11/9/2404BiVO<sub>4</sub> photoanodephotoelectrochemical stabilityspark plasma sintering (SPS)ceramics |
| spellingShingle | Liren Zheng Minrui Wang Yujie Li Fahao Ma Jiyu Li Weiyi Jiang Mu Liu Hefeng Cheng Zeyan Wang Zhaoke Zheng Peng Wang Yuanyuan Liu Ying Dai Baibiao Huang BiVO<sub>4</sub> Ceramic Photoanode with Enhanced Photoelectrochemical Stability Nanomaterials BiVO<sub>4</sub> photoanode photoelectrochemical stability spark plasma sintering (SPS) ceramics |
| title | BiVO<sub>4</sub> Ceramic Photoanode with Enhanced Photoelectrochemical Stability |
| title_full | BiVO<sub>4</sub> Ceramic Photoanode with Enhanced Photoelectrochemical Stability |
| title_fullStr | BiVO<sub>4</sub> Ceramic Photoanode with Enhanced Photoelectrochemical Stability |
| title_full_unstemmed | BiVO<sub>4</sub> Ceramic Photoanode with Enhanced Photoelectrochemical Stability |
| title_short | BiVO<sub>4</sub> Ceramic Photoanode with Enhanced Photoelectrochemical Stability |
| title_sort | bivo sub 4 sub ceramic photoanode with enhanced photoelectrochemical stability |
| topic | BiVO<sub>4</sub> photoanode photoelectrochemical stability spark plasma sintering (SPS) ceramics |
| url | https://www.mdpi.com/2079-4991/11/9/2404 |
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