材料科学
光催化
氟化物
吸收边
热液循环
水热合成
氧化物
兴奋剂
分解水
无机化学
带隙
化学工程
光电子学
催化作用
化学
有机化学
冶金
工程类
作者
Liang Tang,Qi Dang,Ya Tang,Qinshang Xu,Min Zhu,Xiaocang Han,Mingwei Chen,Wenqian Chen
标识
DOI:10.1021/acsami.1c23290
摘要
Oxyfluorides possess considerable attention for their multiple excellent properties, but the conventional high-temperature solid-state syntheses have seen bottlenecks in the synthesis of new compounds. Herein, we report a novel layered oxyfluoride ZnMoO4:F, which is prepared by a facile hydrothermal method using ZnF2 as the fluoride source. The fluoride anions are successfully introduced into the oxygen sublattice, which is confirmed by a combined analysis using XRD, STEM, and TGA techniques. The as-synthesized ZnMoO4:F has an absorption edge at around 550 nm, indicating a red shift of Eg to the visible region compared to the oxide counterpart. The layered oxyfluoride exhibits an enhanced photocatalytic active for hydrogen evolution under simulated sunlight (λ > 350 nm), and the activity of ZnMoO4:F (651.9 μmol g–1) was 2 times higher than that of ZnMoO4 (309.7 μmol g–1). Further electrochemical analysis has shown that the conduction band position plays a critical role in the high performances of ZnMoO4:F. This work sheds new light on the future design and synthesis of novel fluoride-doped materials for photocatalysis applications.
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