Photoinduced semiconductor-metal transition in ultrathin troilite FeS nanosheets to trigger efficient hydrogen evolution
Photoinduced semiconductor-metal transition in ultrathin troilite FeS nanosheets to trigger efficient hydrogen evolution
复制标题
超薄硫铁矿 FeS 纳米片中的光诱导半导体-金属转变可触发高效析氢
DOI：
10.1038/s41467-019-08358-z
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发表时间：
2019-01-23
影响因子：
16.6
通讯作者：
Wu, Xinglong
中科院分区：
文献类型：
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作者：
Zhou, Gang;Shan, Yun;Wu, Xinglong
开发具有高催化活性的稳定且地球资源丰富的电催化剂仍然是析氢反应的重大挑战。不同于复杂的纳米结构，本工作的重点是一个简单可行的方法来提高析氢反应性能，通过操纵材料的固有物理性能。在此，我们提出了一个有趣的超导-金属的转变，在近红外辐射在近室温下触发的铁硫铁矿纳米片的第一次。光生金属相FeS纳米片表现出固有的高催化活性和快速载流子转移的析氢反应，导致在10 mA cm− 2下的142 mV的过电位和较低的Tafel斜率为36.9 mV/decade。我们的研究结果为电子转移的控制和新型催化剂的设计提供了新的启示。
The exploitation of the stable and earth-abundant electrocatalyst with high catalytic activity remains a significant challenge for hydrogen evolution reaction. Being different from complex nanostructuring, this work focuses on a simple and feasible way to improve hydrogen evolution reaction performance via manipulation of intrinsic physical properties of the material. Herein, we present an interesting semiconductor-metal transition in ultrathin troilite FeS nanosheets triggered by near infrared radiation at near room temperature for the first time. The photogenerated metal-phase FeS nanosheets demonstrate intrinsically high catalytic activity and fast carrier transfer for hydrogen evolution reaction, leading to an overpotential of 142 mV at 10 mA cm−2and a lower Tafel slope of 36.9 mV per decade. Our findings provide new inspirations for the steering of electron transfer and designing new-type catalysts.