Hydrogen-evolving photoanode of TiO2 nanoparticles film deposited by a femtosecond laser

Hydrogen-evolving photoanode of TiO2 nanoparticles film deposited by a femtosecond laser
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飞秒激光沉积的 TiO2 纳米粒子薄膜的析氢光阳极

DOI:
10.1016/j.ijhydene.2014.08.082
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发表时间:
2015-01
影响因子:
7.2
通讯作者:
Xiaochang Ni
Xiaochang Ni
中科院分区:
工程技术2区
文献类型:
--
作者:
Lixia Sang;Hongjie Zhang;Xiaochang Ni

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在高真空(∼10−6mbar)到氧气压力(0.1mbar,1mbar)的不同腔压下,用飞秒-PLD在室温下在钛箔上沉积了纳米二氧化钛(NPs)。本工作主要研究了沉积条件对制备的纳米二氧化钛薄膜电极的晶相、形貌和光电化学性能的影响。结果表明,在1mbar条件下制备的纳米二氧化钛纳米颗粒的形貌比真空和0.1mbar条件下制备的纳米二氧化钛纳米颗粒具有更稀疏的纳米团聚。此外,具有纯金红石相且厚度小于400 nm的TiO2NPs薄膜具有更高的光电流密度和更大的载流子密度。结合对光电压的分析,可以推断,较高的腔压(1mbar)和较长的沉积时间(3h)是提高ps-PLD制备的TiO2纳米颗粒薄膜PEC性能的最佳沉积条件。
TiO2nanoparticles (NPs) were deposited on Ti foil by fs-PLD at room temperature under different chamber pressure from high vacuum (∼10−6mbar) to oxygen pressure (0.1 mbar, 1 mbar). The present work focuses on investigating the effects of deposition conditions on crystalline phase, morphology and photoelectrochemical properties of the resulting TiO2NPs-assembled films electrode. The results show that the morphology of the sample obtained in 1 mbar shows the sparser nanoagglomerates than that of TiO2NPs deposited under vacuum or in 0.1 mbar. Moreover, TiO2NPs films with pure rutile phase and the thickness of less than 400 nm exhibited the higher photocurrent densities and the greater charge carrier densities. Combined with the analysis of the photovoltage, it can be deduced that the optimal deposition condition for better PEC performance of TiO2NPs films produced by fs-PLD is the higher chamber pressure (1 mbar) and longer deposition time (3 h).
DOI: 10.1016/s0040-6090(01)00811-2
发表时间: 2001-06
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影响因子: 2.1
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影响因子: 9
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DOI: 10.1016/0022-4596(91)90255-g
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影响因子: 3.3
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