Efficient photoanode with a MoS 2 /TiO 2 /Au nanoparticle heterostructure for ultraviolet-visible photoelectrocatalysis.

Autor: Mai TH; Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Do HB; Faculty of Applied Science, Ho Chi Minh University of Technology and Education, Ho Chi Minh 700000, Vietnam., Pham LD; Institute of Material Science, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam., Phan TX; Institute of Physics, Vietnam Academy of Science and Technology, Hanoi 100000, Vietnam., Chen WZ; Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Lan LW; Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Lin HJ; Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Nguyen VH; International Training Institute for Material Science, Hanoi University of Science and Technology, Hanoi 100000, Vietnam., Dong CL; Department of Physics, Tamkang University, Tamsui 25137, Taiwan., Kumar ASK; Department of Chemistry, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.; Faculty of Geology, Geophysics and Environmental Protection, Akademia Gorniczo-Hutnicza (AGH) University of Science and Technology, Krakow 30-059, Poland., El-Mahdy AFM; Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Lee H; Department of Photonics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Dang DK; Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, Ho Chi Minh 700000, Vietnam., Vo DN; Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh 755414, Vietnam., Tu LW; Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Kuo CC; Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Yang HD; Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan., Pham PV; Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.
Jazyk: angličtina
Zdroj: Nanotechnology [Nanotechnology] 2024 Jul 03; Vol. 35 (38). Date of Electronic Publication: 2024 Jul 03.
DOI: 10.1088/1361-6528/ad5aa0
Abstrakt: Green energy technology is generally becoming one of hot issues that need to be solved due to the adverse effects on the environment of fossil fuels. One of the strategies being studied and developed by theorists and experimentalists is the use of photoelectrochemical (PEC) cells, which are emerging as a candidate to produce hydrogen from water splitting. However, creating photoelectrodes that meet the requirements for PEC water splitting has emerged as the primary obstacle in bringing this technology to commercial fruition. Here, we construct a heterostructure, which consists of MoS 2 /TiO 2 /Au nanoparticles (NPs) to overcome the drawbacks of the photoanode. Owing to the dependence on charge transfer, the bandgap of MoS 2 /TiO 2 and the utilization the Au NPs as a stimulant for charges separation of TiO 2 by localized surface plasmon resonances effect as well as the increase of hot electron injection to cathode, leading to photocatalytic activities are improved. The results have recorded a significant increase in the photocurrent density from 2.3μAcm-2of TiO 2 to approximately 16.3μAcm-2of MoS 2 /TiO 2 /Au NPs. This work unveils a promising route to enhance the visible light adsorption and charge transfer in photo-electrode of the PEC cells by combining two-dimensional materials with metal NPs.
(Creative Commons Attribution license.)
Databáze: MEDLINE
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