DOI码：10.1016/j.cej.2021.129343

所属单位：扬州大学

教研室：无机教研室

发表刊物：Chemical Engineering Journal

关键字：Graphene oxide; Molybdenum sulfide; Hydrogen evolution reaction (HER); Near-infrared light; Photoelectrocatalysis

摘要：This work presents an effective way of enhancing MoS2-mediated electrocatalytic hydrogen evolution, by exploiting the synergistic effect of reduced graphene oxide (rGO) and near-infrared (NIR) light. Various rGO-MoS2 composites were obtained via hydrothermal method. The optimized composite, 0.2rGO-MoS2 exhibited enhanced electrocatalytic hydrogen evolution activity in a wide pH range under NIR irradiation, without adding noble metal. The overpotentials of 0.2rGO-MoS2 at 10 mA cm−2 in acidic and alkaline media were 146 and 314 mV, respectively. The corresponding Tafel slopes in acidic and alkaline media were 51 and 80 mV dec−1, respectively. In both media, the electrocatalytic hydrogen evolution by 0.2rGO-MoS2 under NIR irradiation was attributed to the Volmer-Heyrovsky mechanism. 0.2rGO-MoS2 also had a good reproducibility and durability under NIR light irradiation after 5000 cycles and 24 h of continuous electrolysis in both media. Furthermore, the roles of rGO and NIR irradiation in the electrocatalytic hydrogen evolution by MoS2 were investigated.

论文类型：journalArticle

论文编号：129343

学科门类：理学

一级学科：化学

文献类型：journalArticle

卷号：418

是否译文：否

发表时间：2021-08-15

收录刊物：SCI

发布期刊链接：https://doi.org/10.1016/j.cej.2021.129343