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首页> 外文期刊>Applied Surface Science >CdS nanoparticles/CeO2 nanorods composite with high-efficiency visible-light-driven photocatalytic activity
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CdS nanoparticles/CeO2 nanorods composite with high-efficiency visible-light-driven photocatalytic activity

机译：具有高效可见光驱动光催化活性的CdS纳米颗粒/ CeO2纳米棒复合材料

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摘要

Different mole ratios of CdS nanoparticles (NPs)/CeO2 nanorods (NRs) composites with effective contacts were synthesized through a two-step hydrothermal method. The crystal phase, microstructure, optical absorption properties, electrochemical properties and photocatalytic H-2 production activity of these composites were investigated. It was concluded that the photogenerated charge carriers in the CdS NPs/CeO2 NRs composite with a proper mole ratio (1:1) exhibited the longest lifetime and highest separation efficiency, which was responsible for the highest H-2-production rate of 8.4 mmol h(-1) g(-1) under visible-light irradiation (lambda > 420 nm). The superior photocatalytic H-2 evolution properties are attributed to the transfer of visible-excited electrons of CdS NPs to CeO2 NRs, which can effectively extend the light absorption range of wide-band gap CeO2 NRs. This work provides feasible routes to develop visible-light responsive CeO2-based nanomaterial for efficient solar utilization. (C) 2015 Elsevier B.V. All rights reserved.
机译：通过两步水热法合成了有效接触的CdS纳米颗粒（NPs）/ CeO2纳米棒（NRs）复合材料的不同摩尔比。研究了这些复合材料的晶相，微观结构，光吸收性能，电化学性能和光催化H-2的生产活性。结论是：摩尔比（1：1）的CdS NPs / CeO2 NRs复合材料中的光生载流子具有最长的寿命和最高的分离效率，这是导致H-2产生率最高的8.4 mmol。 h（-1）g（-1）在可见光照射下（λ> 420 nm）。优异的光催化H-2演化性能归因于CdS NPs的可见激发电子向CeO2 NRs的转移，可以有效地扩展宽带隙CeO2 NRs的光吸收范围。这项工作为开发可见光响应CeO2基纳米材料以有效利用太阳能提供了可行的途径。 （C）2015 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2016年第15期|154-160|共7页
  • 作者

    You Daotong; Pan Bao; Jiang Fan; Zhou Yangen; Su Wenyue;

  • 作者单位

    Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

    Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

    Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

    Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

    Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    CdS nanoparticles/CeO2 nanorods; Nanocomposite; Photocatalytic H-2-evolution; Charge-carrier transport;

    机译：CdS纳米颗粒/ CeO2纳米棒;纳米复合材料;光催化H-2-演化;电荷-载流子传输;

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