光催化
X射线光电子能谱
热液循环
拉曼光谱
材料科学
带隙
水热合成
化学工程
核化学
纳米技术
催化作用
光电子学
化学
光学
物理
有机化学
工程类
作者
Chi‐Jung Chang,Zheng-Ting Tsai,Kuen‐Song Lin,Yan-Yu Nian
标识
DOI:10.1016/j.jphotochem.2023.115027
摘要
The flower-like MoS2@Ag2S (MS@AS) photocatalyst was synthesized by the hydrothermal and ion exchange reactions. Results of SEM, TEM, elemental line scan profiles, and XPS analysis revealed that Ag2S nanoparticles were attached to flower-like MoS2. Raman spectra confirm that MoS2 (MS) and MoS2@Ag2S (MS@AS) photocatalysts are hybrid phases of 1 T-MoS2 and 2H-MoS2. Compared with pristine MoS2, the shifts of XPS Mo3d and S2s peaks of MS@AS photocatalyst indicate the interaction between MoS2 and Ag2S (or Ag). The band structure of the photocatalyst is proposed based on the UPS spectrum and Tauc plot of MoS2 and Ag2S. The H2 production efficiency of MoS2@Ag2S photocatalyst reaches 3516 μmol·g−1·h−1, better than that of MoS2. The MoS2@Ag2S photocatalyst exhibits a S-scheme band structure, which can facilitate electron-hole separation and improves photocatalytic H2 production activity.
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