The combination of different semiconductors to form a heterojunction plays an important role for exploring new visible-light-driven electrocatalysts. Herein, a two-dimensional (2D) BiWO/LaTiO (LTO) heterojunction has been synthesized and to be as carrier of Pt nanoparticles. Subsequently, electrocatalytic activity and stability of the as-obtained Pt-BiWO/LTO has been evaluated in methanol oxidation reaction (MOR) under the action of visible light and electricity. Results indicate that Pt-BiWO/LTO sample displays excellent catalytic performance and stability with assistance from visible light. Under identical conditions, the current intensity of MOR on the Pt-BiWO/LTO modified electrode is found to reach 1409 mA mg, which is 3.92 times higher than the measured Pt-BiWO modified electrode (359.8 mA mg). In addition, the current density of MOR on Pt-BiWO/LTO electrode decreases by 2.85% after scanning for 300 cycles. Furthermore, Pt-BiWO/LTO is 6.99 times more resistant to poisoning than the Pt-BiWO electrode determines by chronopotentiometry under visible light illumination. The presented results indicate that a Pt-BiWO/LTO nanocomposite is a viable alternative photo-electric catalyst, providing a potential new basis for the future development of catalysts in fuel cell reactions.
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| http://dx.doi.org/10.1016/j.jcis.2019.10.114 | DOI Listing |
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