Synthesis and photocatalytic activity of LaTiO2N using titanium oxide nanosheet/La3+ hybrids as a precursor,Sustainable Energy & Fuels

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Synthesis and photocatalytic activity of LaTiO2N using titanium oxide nanosheet/La3+ hybrids as a precursor
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2024-02-21 , DOI: 10.1039/d3se01684f
Xiong Tao ₁ , Tatsuki Tsugawa ₁ , Kazuto Hatakeyama _{1,

2} , Shintaro Ida _{1,

2,

3}

Affiliation

LaTiO₂N, which has attracted attention as a promising candidate for photocatalytic water splitting, was synthesized through a method that utilized a titania nanosheet/La³⁺/La(OH)₃ hybrid system as a precursor. Through FE-SEM and HAADF-STEM measurements with atomic resolution, it has been revealed that LaTiO₂N possesses a nano-particle morphology characterized by highly crystalline particles in the size range of 5–20 nm, which aggregate to form larger nano-particles with sizes ranging from 50 to 100 nm. The BET surface area of the LaTiO₂N was 30.3 m² g⁻¹. Compared to the photocatalytic O₂ evolution activity in the presence of the sacrificial agent of LaTiO₂N synthesized from La₂Ti₂O₇, the LaTiO₂N synthesized from the titania nanosheet/La³⁺/La(OH)₃ hybrids exhibited three times higher O₂ evolution activity (AQY: 1.3%) under light irradiation with a wavelength of 420 nm.

中文翻译：

以氧化钛纳米片/La3+杂化物为前驱体的LaTiO2N的合成及其光催化活性

LaTiO ₂ N 作为一种有前景的光催化水分解候选材料而受到关注，它是通过利用二氧化钛纳米片/La ³⁺ /La(OH) ₃杂化体系作为前驱体的方法合成的。通过原子分辨率的FE-SEM和HAADF-STEM测量，发现LaTiO ₂ N具有纳米颗粒形态，其特征是尺寸范围为5-20 nm的高度结晶颗粒，这些颗粒聚集形成更大的纳米颗粒尺寸范围为 50 至 100 nm。_{LaTiO 2} N的BET表面积为30.3m ² g ^-1。_{与由La 2} Ti ₂ O _{7合成的LaTiO}₂ N牺牲剂存在下的光催化O ₂析出活性相比，由二氧化钛纳米片/La ³⁺ /La(OH) ₃杂化物合成的LaTiO ₂ N表现出三个在波长420 nm的光照射下， O ₂析出活性提高1.3倍（AQY：1.3%）。

更新日期：2024-02-21

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