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- W2809019743 abstract "Abstract A rational design of metal-free hierarchical nanostructures is critical for achieving next-generation photocatalytic system. Transition metal dichalcogenide, e.g., MoS2 based heterostructures (HSs) with shape-controlled TiO2 have attracted great attention in visible light electrocatalysis owing to their unique crystal structure, morphology and chemical properties. Herein, we demonstrate a low temperature solvothermal growth of few layer MoS2 nanoflowers (NFs) over the porous TiO2(B) nanobelts (NBs) for enhanced hydrogen evolution reaction (HER) in acidic media as well as improved photocatalytic degradation of organic dye rhodamine-B (RhB) under visible light. Few-layer MoS2 NFs with lateral sizes 130–350 nm were successfully grown on TiO2 NBs, as revealed from the high resolution TEM imaging. EDS mapping confirms the elemental composition and their spatial distribution in the HS sample. MoS2/TiO2 NBs HS exhibits extremely high adsorption ability (66% after 40 min) under dark as well as enhanced photocatalytic degradation efficiency (80% after 60 min) of RhB under visible light irradiation. A systematic photoelectrochemical measurements demonstrate that the MoS2/TiO2 NBs HS exhibits excellent HER activity in acidic electrolyte with an overpotential and estimated Tafel slope to be −320 mV at 10 mA/cm2 and 95 mV/dec, respectively, which is much lower than that of the pristine TiO2 NBs measured to be −792 mV and 135 mV/dec, respectively, under visible light. It is shown that the Volmer-Heyrovsky mechanism leads to the extremely high hydrogen generation at the working electrode made with edge-defect enriched few layer MoS2 on porous TiO2 NBs." @default.
- W2809019743 created "2018-06-29" @default.
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- W2809019743 date "2018-10-01" @default.
- W2809019743 modified "2023-10-14" @default.
- W2809019743 title "Solar light driven photoelectrocatalytic hydrogen evolution and dye degradation by metal-free few-layer MoS2 nanoflower/TiO2(B) nanobelts heterostructure" @default.
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- W2809019743 doi "https://doi.org/10.1016/j.solmat.2018.05.056" @default.
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