| 钴析氧催化剂原位制备及其结合半导体硅的光解水制氢性能 |
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| 引用本文： | 马楠,高国锋,郝根彦,赵强,李晋平.钴析氧催化剂原位制备及其结合半导体硅的光解水制氢性能[J].应用化学,2015,32(5):576-582. |
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| 作者姓名： | 马楠 高国锋 郝根彦 赵强 李晋平 |
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| 作者单位： | 太原理工大学精细化工研究所 太原 030024 |
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| 基金项目： | 山西省自然科学基金(2014011017-1);山西省高等学校创新人才支持计划和国家自然科学基金(21476153)资助 |
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| 摘 要： | 将发展成熟的硅光伏电池与析氧催化剂(OEC)结合,在近中性环境下光解水制备了氢气。采用原位制备方法,在硅光伏材料上电沉积钴形成无定形Co-OEC膜,有效促进光生电荷分离,实现了利用AM1.5组合滤波片模拟太阳光照射下水分解制氢气。 结果表明,在K2B4O7缓冲溶液(pH=9.2)中,0 V(vs NHE)电压下沉积400 s形成的无定形Co-OEC具有良好的催化析氧效果,在无外加电压且模拟太阳光照射下,析氧电流密度可达1.7×10-2 A/cm2,产氧速率为1.28 mol/(h·m2),且具有良好的稳定性。
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| 关 键 词： | 半导体硅 钴-析氧催化剂 原位制备 制氢 近中性 |
| 收稿时间： | 2014-08-13 |
| 修稿时间： | 2014-11-28 |
Cobalt Oxygen-evolving Catalysts Generated in Situ and Interfaced with Silicon-based Semiconductors for Solar Water Splitting |
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| MA Nan,GAO Guofeng,HAO Genyan,ZHAO Qiang,LI Jinping.Cobalt Oxygen-evolving Catalysts Generated in Situ and Interfaced with Silicon-based Semiconductors for Solar Water Splitting[J].Chinese Journal of Applied Chemistry,2015,32(5):576-582. |
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| Authors: | MA Nan GAO Guofeng HAO Genyan ZHAO Qiang LI Jinping |
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| Institution: | Research Institute of Special Chemicals,Taiyuan University of Technology,Taiyuan 030024,China |
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| Abstract: | Due to the earth-abundance and prevalence in photovoltaic industries, silicon was used as light-harvesting material to from a composite with amorphous cobalt oxides oxygen-evolving catalyst(OEC) to carry out the solar-driven water-splitting in near-neutral conditions for hydrogen production. The device can efficiently utilize the solar spectrum for the photon-charge conversion and allow water splitting. The Co-OEC prepared by electrolysis deposition for 400 s exhibits excellent oxygen evolution properties, with a current density of 1.7×10-2 A/cm2 and a oxygen evolution rate of 1.28 mol/(h·m2) in the potassium tetraborate buffer solution(pH=9.2) at 0 V vs.NHE under AM1.5 simulated sunlight. |
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| Keywords: | semiconductor silicon cobalt-oxygen-evolving catalyst in situ preparation hydrogen evolution near-neutral |
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