Coral-inspired nanoscale design of porous SnS2 for photocatalytic reduction and removal of aqueous Cr (VI)

Coral-inspired nanoscale design of porous SnS2 for photocatalytic reduction and removal of aqueous Cr (VI)
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受珊瑚启发的多孔 SnS2 纳米级设计,用于光催化还原和去除水性 Cr (VI)

DOI:
10.1016/j.apcatb.2017.02.050
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发表时间:
2017-06
影响因子:
22.1
通讯作者:
Lu Jianmei
Lu Jianmei
中科院分区:
化学1区
文献类型:
--
作者:
Qu Jiafu;Chen Dongyun;Li Najun;Xu Qingfeng;Li Hua;He Jinghui;Lu Jianmei

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频繁的工业排放的各种污染物,如重金属进入水资源造成了严重的环境破坏。本研究通过可见光催化剂(SnS 2)和螯合配体(螺苯并吡喃衍生物,SPNH)对大孔有序硅质泡沫(MOSF)进行表面修饰,成功制备了一种独特的多孔珊瑚石状纳米复合材料(SPNH-MOSF@ SnS 2)。在我们的方法中,选择了SnS 2作为光催化剂,由于其高可见光诱导的光催化活性。SPNH被修改,因为它可以选择性螯合可溶性铬(III),当暴露于紫外光。这种独特的纳米复合材料可用于高效还原和去除废水中的六价铬[Cr(VI)],特别是在温和的酸性条件下。结果表明,令人鼓舞的应用程序,这种制备的新的纳米复合材料处理含铬(VI)的废水。
Frequent industrial discharge of various contaminants such as heavy metals into water resources has caused severe environmental damage. In this study, a unique porous corallite-like nanocomposite (SPNH-MOSF@SnS2) was successfully fabricatedviasurface modification of visible-light-driven photocatalyst (SnS2) and chelating ligand (spirobenzopyran derivative, SPNH) on macroporous ordered siliceous foam (MOSF). In our approach, SnS2was selected as the photocatalyst due to its high visible light induced photocatalytic activity. SPNH was modified because it could selectively chelate soluble Cr (III) when exposed to ultraviolet light. This unique nanocomposite could be used for highly efficient reduction and removal of hexavalent chromium [Cr (VI)] from wastewater, especially under the mildly acidic condition. The results indicate encouraging applications of this as-prepared new nanocomposite for treating Cr (VI) containing wastewater.
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