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首页> 外文期刊>RSC Advances >Alkylammonium thiostannate inorganic/organic hybrids as high-performance photocatalysts with a decoupled adsorption–photodegradation mechanism
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Alkylammonium thiostannate inorganic/organic hybrids as high-performance photocatalysts with a decoupled adsorption–photodegradation mechanism

机译：烷基铵硫酸盐无机/有机杂种作为具有去耦吸附光降解机制的高性能光催化剂

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For traditional photocatalysts, the adsorption and successive surface reaction constitute a coupled and integrated process, owing to the limited number of catalytic active centres available. An attempt to boost the photocatalytic performance to optimize the adsorption and surface reaction process may be performed by exploring various photocatalyst infrastructures. Herein, we use a facile solvothermal method to synthesize a series of layered alkylammonium thiostannate hybrids, namely (baH) _(2) Sn _(3) S _(7) , (haH) _(2) Sn _(3) S _(7) and (oaH) _(2) Sn _(3) S _(7) (ba = butylamine, ha = hexylamine, oa = octylamine). The hybrids showed broad UV-visible light absorption with appropriate band gaps. The inorganic/organic amphiphilic infrastructure of these hybrids enables them to exhibit prominent ion-exchange properties for Rhodamine B, with a large capacity over a wide pH range (1–11). And the adsorbed Rhodamine B is photodegraded within 30 minutes. A mechanistic study indicates that the adsorption and photodegradation steps are performed at the organic and inorganic layers within these hybrids, respectively, which are decoupled and independent. We conclude that the high-performance integrated adsorption–photodegradation ability is a consequence of the lipophilicity of intercalated alkylammonium and the photocatalysis performance of the 2D [Sn _(3) S _(7) ] _( n ) ~(2 n ?) monolayers.
机译：对于传统的光催化剂，由于可获得的催化活性中心数量有限，吸附和连续的表面反应构成耦合和综合的方法。通过探索各种光催化剂基础设施，可以进行促进光催化性能以优化吸附和表面反应过程的试图进行。在此，我们使用容易溶剂的方法合成一系列层状烷基硫铵杂交物，即（BAH）_（2）Sn _（3）S_（7），（HAH）_（2）SN _（3）S _（7）和（OAH）_（2）Sn _（3）S _（7）（Ba =丁胺，Ha =己胺，OA = Octylamine）。杂交种显示宽紫外线可见光吸收，具有适当的带空隙。这些杂种的无机/有机两亲基础设施使它们能够为罗丹明B的突出离子交换性能表现出较大的电容在宽的pH范围内（1-11）。并且吸附的罗丹明B在30分钟内光降解。机械研究表明，吸附和光降解步骤分别在这些杂种的有机和无机层中进行，其被解耦和独立。我们得出结论，高性能集成吸附光降解能力是插层烷基铵的亲脂性和2D [Sn _（3）S _（7）] _（n）〜（2N？）的光催化性能的结果单层。

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