Adsorption of H2S on graphane decorated with Fe, Co and Cu: a DFT study
Adsorption of H2S on graphane decorated with Fe, Co and Cu: a DFT study
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Fe、Co 和 Cu 修饰的石墨烷上 H2S 的吸附:DFT 研究
DOI:
10.1039/c7ra04905f
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发表时间:
2017-06
期刊:
影响因子:
3.9
通讯作者:
Wang Chaoyang
中科院分区:
文献类型:
--
作者:
Zhou Qingxiao;Su Xiangying;Ju Weiwei;Yong Yongliang;Li Xiaohong;Fu Zhibing;Wang Chaoyang
Herein, density functional theory (DFT) calculations were performed to investigate the adsorption of a H2S molecule on the surface of hydrogenated graphene (graphane). In our results, we found that the appearance of an H-vacancy significantly improved the reactivity of graphane due to the unpaired electrons of the vacancy site. However, small adsorption energy and low charge transfer indicated that the interaction between the H2S molecule and the pure H-vacancy-defected graphane occurred via physisorption. By introducing transition-metal dopants (Fe, Co, and Cu), the adsorption process of the H2S molecule changed to chemisorption. Furthermore, the adsorption of H2S induced a decrease in the band gaps, which could be seen as signal for the detection of H2S gas.
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