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首页> 外文期刊>RSC Advances >An effective quaternary nano-sized Er3+:Y3Al5O12/Pt-PdS/ZnS visible-light photocatalyst for H-2 production
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An effective quaternary nano-sized Er3+:Y3Al5O12/Pt-PdS/ZnS visible-light photocatalyst for H-2 production

机译：用于H-2生产的有效季纳米尺寸ER3 +：Y3AL5O12 / PT-PDS / ZNS可见光光催化剂

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摘要

A highly effective and stable up-conversion luminescence agent, Er3+:Y3Al5O12, was synthesized by sol-gel and calcination methods. Then, as a novel visible-light photocatalyst, Er3+:Y3Al5O12, Pt and PdS (as dual cocatalysts) decorated ZnS nano-sized composites, Er3+:Y3Al5O12/Pt-PdS/ZnS, were fabricated by deposition-precipitation and ultrasonic dispersion methods. All prepared samples were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectroscopy (EDX). UV-vis absorption and PL spectra of Er3+:Y3Al5O12 were also determined. The visible-light photocatalytic H-2 production activity of the prepared Er3+:Y3Al5O12/Pt-PdS/ZnS was evaluated by using Na2S and Na2SO3 as sacrificial reagents in an aqueous solution under 300 W irradiation from a xenon lamp. In addition, some influential factors such as Er3+:Y3Al5O12 and ZnS mass ratio, catalyst amount, irradiation time and irradiation intensity on visible-light photocatalytic H-2 production of Er3+:Y3Al5O12/Pt-PdS/ZnS were investigated in detail. It was found that Er3+:Y3Al5O12 can effectively improve the visible-light photocatalytic activity of ZnS. Particularly, Er3+:Y3Al5O12/Pt-PdS/ZnS with 0.13 wt% PdS and 0.3 wt% Pt and a 0.30 : 1.00 mass ratio shows the highest photocatalytic H-2 production activity in the sulfide/sulfite (0.2 mol L-1 Na2S and 0.3 mol L-1 Na2SO3) aqueous solution as sacrificial reagents.
机译：通过溶胶 - 凝胶和煅烧方法合成高效稳定的上转化发光剂ER3 +：Y3Al5O12。然后，作为一种新型可见光光催化剂，ER3 +：Y3Al 5O12，Pt和Pds（作为双助催化剂）装饰ZnS纳米尺寸复合材料，通过沉淀沉淀和超声波分散方法制造ER3 +：Y3Al5O12 / Pt-PDS / ZnS。所有制备的样品都是通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线光电子能谱（XPS）和能量分散X射线光谱（EDX）的所有制备的样品。还测定了ER3 +：Y3AL5O12的UV-Vis吸收和PL光谱。通过使用Na 2 S和Na 2 SO 3作为从氙灯照射的300W照射的水溶液中的牺牲试剂来评价制备的ER3 +：Y3Al5O12 / Pt-Pds / Zns的可见光光催化H-2的制备活性。另外，详细研究了一些影响因素，例如ER3 +：Y3AL5O12和ZnS质量比，催化剂量，照射时间和辐照强度ER3 +：Y3Al5O12 / Pt-PDS / ZnS的施用亮光光催化H-2产生。发现ER3 +：Y3Al5O12可以有效地改善Zns的可见光光催化活性。特别地，ER3 +：Y3Al5O12 / Pt-PD / ZnS，0.13wt％Pds和0.3wt％Pt和0.30：1.00质量比显示硫化物/亚硫酸盐中最高的光催化H-2生产活性（0.2mol L-1 Na 2 S和0.3 mol L-1 Na 2 SO 3）水溶液作为牺牲试剂。

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  • 来源
    《RSC Advances》 |2015年第67期|共8页
  • 作者

    Lu Chunxiao; Chen Yang; Li Yun; Ma Chunhong; Zhang Hongbo; Guo Yuwei; Wang Jun;

  • 作者单位

    Liaoning Univ Coll Chem Shenyang 110036 Peoples R China;

    Liaoning Univ Coll Chem Shenyang 110036 Peoples R China;

    Liaoning Univ Coll Chem Shenyang 110036 Peoples R China;

    Liaoning Univ Coll Chem Shenyang 110036 Peoples R China;

    Liaoning Univ Coll Chem Shenyang 110036 Peoples R China;

    Liaoning Univ Coll Chem Shenyang 110036 Peoples R China;

    Liaoning Univ Coll Chem Shenyang 110036 Peoples R China;

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