期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 133, 期 15, 页码 6012-6019出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja111454f
关键词
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资金
- FAPESP, Brazilian agency [98/14324-0]
- FINEP, Brazilian agency
- CNPq, Brazilian agency
- CAPES, Brazilian agency
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [98/14324-0] Funding Source: FAPESP
In this study, we demonstrate an alternative and promising way to produce hematite photoanodes with high performance and without the addition of doping or catalytic coating. In this approach, we processed hematite thin films using a colloidal dispersion of magnetite nanocrystals as the precursor. The photoelectrochemical characterization shows that the colloidal approach used to process an undoped hematite photoanode produced a high-performance electrode for water photooxidation with an onset potential as low as 0.8 V-RHE. This value is comparable to the best results reported in the literature for a hematite photoanode modified with catalytic materials. We demonstrate that pure hematite thin films reach 1.1 mA.cm(-2) at 1.23 V-RHE with back-side illumination.
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