| 张家琦,尹明彩,李会.化学通报,2024,87(6):720-725. |
| 染料共敏化MoS2光催化产氢性能研究 |
| Photocatalytic hydrogen production of MoS2 under dye co-sensitization |
| 投稿时间：2023-11-27 修订日期：2023-12-08 |
| DOI： |
| 中文关键词: 二硫化钼 藻红B钠盐 罗丹明B 共敏化 光催化制氢 |
| 英文关键词:MoS2, Erythrosin B sodium salt, Rhodamine B, Co-sensitization, Photocatalytic hydrogen production |
| 基金项目:河南省科技计划项目(162102210160)资助 |
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| 中文摘要: |
| 染料敏化是提升二硫化钼(MoS2)光催化制氢性能的一种有效手段。相较于单一敏化剂,共敏化可进一步拓展光吸收范围,提高催化剂的光催化效率,但目前尚无共敏化下MoS2光催化制氢的报道。本文在利用液相法制得MoS2的基础上,以藻红B钠盐(EB)和罗丹明B(RhB)为共敏化剂,测定了二者共敏化下MoS2的光催化制氢性能,重点研究了EB和RhB的加入比例和加入顺序对产氢性能的影响。结果发现当少量RhB与EB共存时,产氢性能得到一定程度的提升；EB、RhB分步加入时的性能优于一同加入且RhB先加入时的性能最佳。此外,结合紫外-可见吸收光谱、荧光光谱结果和两种染料分子的结构对染料共敏化提升MoS2光催化产氢性能的原因进行了初步分析。 |
| 英文摘要: |
| Dye-sensitization is an effective way to improve the photocatalytic hydrogen production performance of molybdenum disulfide (MoS2). Compared to a single sensitizer, co-sensitization can further expand the light absorption range and improve the photocatalytic efficiency. However, there is no report on the photocatalytic hydrogen production of MoS2 under co-sensitization to date. In this paper, MoS2 was prepared by the liquid-phase method, and its photocatalytic hydrogen production performance under co-sensitization of erythrosin B sodium salt (EB) and rhodamine B (RhB) was determined. The focus was to study the effects of the adding ratio and order of EB and RhB on hydrogen production performance. The results showed that when a small amount of RhB coexisted with EB, the hydrogen production performance was improved to a certain extent. The performance of adding RhB and EB in sequence was better than that of adding them together, and the best performance was achieved when RhB was added first. Besides, the reasons for the hydrogen production performance enhancement of MoS2 under co-sensitization were preliminarily elucidated based on the results of UV-visible absorption spectra and fluorescence spectra, as well as the structures of two dyes. |
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