Hafnium boosts charge carrier dynamics in hematite for improved solar water splitting
Hafnium boosts charge carrier dynamics in hematite for improved solar water splitting
复制标题
铪可增强赤铁矿中的载流子动力学，从而改善太阳能水分解
DOI：
10.1016/j.matlet.2023.134176
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发表时间：
2023
影响因子：
3
通讯作者：
Souza, Flavio L.
中科院分区：
文献类型：
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作者：
Morishita, Gustavo M.;Rodríguez-Gutiérrez, Ingrid;Castro, Ricardo H.R.;Souza, Flavio L.
这项工作证明了三倍的光电化学效率的赤铁矿纳米棒的组合的结果的哈夫里表面掺杂和纳入的ZrO 2底层FTO。虽然ZrO 2层减少了电子从FTO接触支持的回注损失，Haflets表面掺杂并没有显着改变赤铁矿晶格结构。相反，哈夫里汀诱导纳米棒直径从32 ± 2和26 ± 2 nm减小，从而增加了活性表面积。在500 nm光阳极厚度下使用100 mW cm-2照明的线性扫描伏安法测量显示，在可逆氢电极（RHE）中，在1.23 V下的光电流密度为2.07 mA cm-2。该值与裸赤铁矿棒（0.75 mA cm−2）形成对比，突出了光电阳极设计在提高太阳能制氢方面的作用。
The work demonstrates a three-fold increase in photoelectrochemical efficiency of hematite nanorods as a result of the combination of Hafnium surface doping and the incorporation of a ZrO2underlayer on FTO. While the ZrO2layer reduced the electron loss from the back-injection into the FTO contact support, Hafnium surface doping did not significantly alter the hematite lattice structure. But rather, Hafnium induced nanorod diameter reduction from 32 ± 2 and 26 ± 2 nm, with a consequent increase in the active surface area. The linear sweep voltammetry measurements with 100 mW cm−2illumination in a 500 nm photoanode thickness showed a photocurrent density of 2.07 mA cm−2at 1.23 V in a reversible hydrogen electrode (RHE). The value contrasts with the bare hematite rods (0.75 mA cm−2), highlighting the photoanode design's role in improving solar power hydrogen production.
影响因子：
8.6
作者：
T. Smart;Valentin Urena Baltazar;Mingpeng Chen;Bin Yao;Kiley Mayford;F. Bridges;Yat Li;Y. Ping-Y.-P
通讯作者：
T. Smart;Valentin Urena Baltazar;Mingpeng Chen;Bin Yao;Kiley Mayford;F. Bridges;Yat Li;Y. Ping-Y.-P
影响因子：
4.7
作者：
通讯作者：
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