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首页> 外文期刊>ACS catalysis >Enhancement of Solar Hydrogen Generation by Synergistic Interaction of La2Ti2O7 Photocatalyst with Plasmonic Gold Nanoparticles and Reduced Graphene Oxide Nanosheets
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Enhancement of Solar Hydrogen Generation by Synergistic Interaction of La2Ti2O7 Photocatalyst with Plasmonic Gold Nanoparticles and Reduced Graphene Oxide Nanosheets

机译：La2Ti2O7光催化剂与等离子金纳米粒子和氧化石墨烯纳米片的协同相互作用增强太阳能的产生

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This report shows that incorporating nitrogen-doped La2Ti2O7 (NLTO) photocatalyst with gold nanoparticles and reduced graphene oxide (rGO) nanosheets improves the photocatalytic hydrogen generation rate significantly. The underlying mechanism of the photocatalysis enhancement by the presence of the Au nanoparticles and the rGO nanosheets is revealed. Nitrogen doping alone can extend the light absorption range of photocatalyst to 550 nm. In addition, nitrogen doping has enabled plasmon-induced resonance energy transfer (PIRET) from the plasmonic Au nanoparticle to NLTO, inducing charge separation in NLTO solar radiation up to 600 nm. The Au nanoparticles not only serve as the photosensitizers but also lead to a shift in the flat band potential, suppressing the charge recombination and improving the charge extraction. The rGO does not affect the charge separation process but significantly increases the lifetime of photogenerated charge carriers.
机译：该报告表明，将掺氮的La2Ti2O7（NLTO）光催化剂与金纳米颗粒和还原的氧化石墨烯（rGO）纳米片结合使用可显着提高光催化氢的生成速率。揭示了通过Au纳米颗粒和rGO纳米片的存在而增强光催化作用的基本机理。单独的氮掺杂可以将光催化剂的光吸收范围扩展到550nm。此外，氮掺杂已使等离激元诱导的共振能量从等离子Au纳米粒子转移至NLTO，从而在NLTO太阳辐射中诱导了高达600 nm的电荷分离。 Au纳米颗粒不仅用作光敏剂，而且还导致平带电势的移动，从而抑制了电荷复合并改善了电荷提取。 rGO不会影响电荷分离过程，但会显着增加光生电荷载流子的寿命。

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