Surface Modulation of Hierarchical MoS2 Nanosheets by Ni Single Atoms for Enhanced Electrocatalytic Hydrogen Evolution
Surface Modulation of Hierarchical MoS2 Nanosheets by Ni Single Atoms for Enhanced Electrocatalytic Hydrogen Evolution
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DOI：
10.1002/adfm.201807086
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发表时间：
2018-10
影响因子：
19
通讯作者：
Huabin Zhang;Le Yu;Tao Chen;Wei Zhou;X. Lou
中科院分区：
文献类型：
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作者：
Huabin Zhang;Le Yu;Tao Chen;Wei Zhou;X. Lou
原子水平上的表面调制是调节表面化学和提高催化性能的重要途径。通过将孤立的Ni原子修饰到多通道碳纳米纤维支撑的层次化MoS_2纳米片的基面上，实现了一种表面调制策略，从而提高了析氢活性。X射线吸收光谱、精细结构研究和密度泛函理论(DFT)计算表明，孤立的Ni原子修饰的MoS_2表面表现出高度强化的H键。由于独特的管状结构和基面调节，新开发的MoS_2催化剂具有良好的析氢活性和稳定性。这种单原子修饰策略为调整固有的催化活性以进行电催化、水分解和其他与能源相关的过程开辟了新的途径。
Surface modulation at the atomic level is an important approach for tuning surface chemistry and boosting the catalytic performance. Here, a surface modulation strategy is demonstrated through the decoration of isolated Ni atoms onto the basal plane of hierarchical MoS2 nanosheets supported on multichannel carbon nanofibers for boosted hydrogen evolution activity. X‐ray absorption fine structure investigation and density functional theory (DFT) calculation reveal that the MoS2 surface decorated with isolated Ni atoms displays highly strengthened H binding. Benefiting from the unique tubular structure and basal plane modulation, the newly developed MoS2 catalyst exhibits excellent hydrogen evolution activity and stability. This single‐atom modification strategy opens up new avenues for tuning the intrinsic catalytic activity toward electrocatalytic water splitting and other energy‐related processes.