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• W4281696503 endingPage "137240" @default.
• W4281696503 startingPage "137240" @default.
• W4281696503 abstract "A series of nickel-based Ruddlesden-Popper phases perovskite La n+1 Ni n O 3n+1 for photoelectrocatalytic oxidations of urea under NIR light irradiation. • La n+1 Ni n O 3n+1 catalysts display a strong near-infrared light absorption. • La n+1 Ni n O 3n+1 act as both semiconductor and electrocatalyst for oxidizing urea. • La 4 Ni 3 O 10 possesses much higher current density than both La 2 NiO 4 and La 3 Ni 2 O 7 . • The unique structure of La 4 Ni 3 O 10 accelerates the separation of electrons and holes. The solar-driven photoelectrocatalytic oxidation of urea is an efficient and costly way to produce hydrogen and purify wastewater synergistically. However, it is still a big challenge facing to the semiconductor-catalyst photoanode with high utilization of sunlight. Herein, we report a series of La-Ni-based Ruddlesden-Popper phases perovskite materials (La n+1 Ni n O 3n+1 , n = 1, 2 and 3) for photoelectrocatalytic oxidations of urea. Such La-Ni -based perovskite materials act simultaneously as a light-harvesting semiconductor and as the electrocatalyst for urea oxidation and all of La n+1 Ni n O 3n+1 catalysts display a strong near-infrared (NIR) light absorption (≥ 800 nm). The La 4 Ni 3 O 10 catalyst exhibits the best activity towards urea oxidation reaction (UOR) with an applied potential of 1.54 V vs. RHE at 1 mA cm -2 , compared to that of 1.64 V and 1.56 V vs. RHE for La 2 NiO 4 and La 3 Ni 2 O 7 , respectively, and 44.7 μmol cm -2 h -1 of N 2 generation rate under NIR light irradiation at the potential of 1.62 V vs. RHE, which is 2.5 times and 1.8 times of that for La 2 NiO 4 and La 3 Ni 2 O 7 , respectively. The unique structure of La 4 Ni 3 O 10 accelerates the separation and transport of electrons and holes, which is beneficial for the diffusion and adsorption of urea molecules in photoanode." @default.
• W4281696503 created "2022-06-13" @default.
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• W4281696503 date "2022-10-01" @default.
• W4281696503 modified "2023-09-24" @default.
• W4281696503 title "Near-infrared-driven photoelectrocatalytic oxidation of urea on La-Ni-based perovskites" @default.
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• W4281696503 doi "https://doi.org/10.1016/j.cej.2022.137240" @default.
• W4281696503 hasPublicationYear "2022" @default.
• W4281696503 type Work @default.

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