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首页> 外文期刊>RSC Advances >The solvent-driven formation of multi-morphological Ag–CeO2 plasmonic photocatalysts with enhanced visible-light photocatalytic reduction of CO2
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The solvent-driven formation of multi-morphological Ag–CeO2 plasmonic photocatalysts with enhanced visible-light photocatalytic reduction of CO2

机译：溶剂驱动的多形态Ag–CeO2等离子体激元光催化剂的形成，并增强了可见光对CO2的光催化还原

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摘要

Ag–CeO _(2) plasmonic photocatalysts with multiple morphologies were synthesized via a simple solvent-driven method. The phase compositions, morphologies and optical properties of the samples were systematically investigated. A combination of noble metal Ag and semiconductor CeO _(2) in certain solvents (such as methanol and ethylene glycol) enhanced surface plasmon resonance (SPR), which was attributed to the good dispersion of Ag particles on CeO _(2) and high Ag ~(0) ratios on the surface. The enhanced SPR effect boosted absorption of incident light and facilitated charge carrier separation and transport efficiency caused by the formation of Schottky barriers, thus promoting VLPCR performance. The optimum ACG sample (ethylene glycol was adopted as the solvent) exhibited the maximum VLPCR activity, achieving a CH _(4) yield of 100 μmol and a CH _(3) OH yield of 35 μmol per gram of catalyst per hour during 6 h visible-light irradiation.
机译：通过简单的溶剂驱动方法合成了具有多种形态的Ag-CeO _（2）等离子体光催化剂。系统地研究了样品的相组成，形态和光学性质。在某些溶剂（例如甲醇和乙二醇）中，贵金属Ag和半导体CeO _（2）的组合可增强表面等离子体共振（SPR），这归因于Ag颗粒在CeO _（2）上的良好分散性和较高的表面上的Ag〜（0）比率。增强的SPR效应增强了入射光的吸收，并促进了肖特基势垒的形成所引起的电荷载流子的分离和传输效率，从而提高了VLPCR的性能。最佳的ACG样品（采用乙二醇作为溶剂）表现出最大的VLPCR活性，在6的过程中，每克催化剂每小时的CH _（4）产率为100μmol，CH _（3）OH产率为35μmol h可见光照射。

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