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首页> 外文期刊>Crystal growth & design >Protonated Branched Polyethyleneimine Induces the Shape Evolution of BiOCl and Exposed {010} Facet of BiOCl Nanosheets
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Protonated Branched Polyethyleneimine Induces the Shape Evolution of BiOCl and Exposed {010} Facet of BiOCl Nanosheets

机译：质子化支化聚乙烯亚胺诱导BioCl的形状演变和BioCl纳米蛋白酶的曝光{010}

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摘要

Protonated branched polyethyleneimine (BPEI) are employed to induce the shape evolution of BiOCl and facet exposure of BiOCl nanosheets through the interaction of protonated positive charges and negative charges stemmed from the {010} facet of BiOCl. During the synthesis process, vital factors including the concentration of protonated BPEI, protonated ability of BPEI caused by the concentration of chlorine ions (Cr), and solvent for the shape and exposure facet of BiOCl are investigated detailly. The shape and phase of the resultant BiOCl is highly determined by the concentration of added BPEI. That is, when increasing the concentration of BPEI from 0 to 14.29 g/L, the shape of resulting products is evolved from three-dimensional (3D) assembled flowers to two-dimensional (2D) nanosheets. Especially, well-defined 2D BiOCl nanosheets with {010} exposed facets are obtained at a fixed concentration of BPEI (3.57 g/L). Furthermore, even fixing this concentration of BPEI, the protonated ability of BPEI is boosted by altering the concentration of Cl- sources and substitutive solvent of aqueous, resulting in increased concentration of vacancies on the surface of BiOCl (such as BiOCl-Cl-3 and BiOCl-AQ) nanosheets. These BiOCl nanosheets with increased vacancies present dramatically enhanced photoreduction efficiency of Cr(VI) removal under simulated solar light irradiation. This work provides a valuable and facile route to design the adjustable shape and exposed facet of BiOCl nanosheets for photocatalysis.
机译：通过质子化正电荷的相互作用和从BioCl的{010}刻面源的相互作用诱导BioCl纳米蛋白酶的BioCl纳米片的形状演变和突出的BioCl纳米片的形状演变。在合成过程中，详细研究了包括质子化BPEI浓度，由氯离子浓度（Cr）浓度引起的BPEI的质子化能力的重要因素，以及BioCl的形状和曝光刻面的溶剂。由加入的BPEI的浓度高度确定所得BioCl的形状和相。也就是说，当增加BPEI的浓度为0至14.29g / L时，所得产物的形状由三维（3D）组装的花朵向二维（2D）纳米晶片。特别地，以{010}暴露的刻面的定义明确定义的2D BioCl纳米片以固定浓度的BPEI（3.57g / L）获得。此外，甚至固定这种浓度的BPEI，通过改变水分的浓度和水性的替代溶剂来提高BPEI的质子化能力，导致BioCl表面的空位浓度增加（例如BioCl-Cl-3和Biocl-aq）纳米液。这些BIOCL纳米片具有增加的空位，在模拟的太阳光照射下显着增强了CR（VI）去除的光电识别效率。这项工作提供了有价值的和容易的路线来设计BioCl Nanoshs的可调节形状和露出的视图，用于光催化。

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  • 来源
    《Crystal growth & design》 |2018年第9期|共13页
  • 作者

    Wu Zhaohui; Li Zhongfu; Tian Qingyong; Liu Jun; Zhang Shumin; Xu Kaiqiang; Shen Jie; Zhang Shiying; Wu Wei;

  • 作者单位

    Changsha Univ Hunan Key Lab Appl Environm Photocatalysis 98 Hongshan Rd Changsha 410022 Hunan Peoples R China;

    Changsha Univ Hunan Key Lab Appl Environm Photocatalysis 98 Hongshan Rd Changsha 410022 Hunan Peoples R China;

    Hunan Univ Technol Natl &

    Local Joint Engn Res Ctr Adv Packaging Mat Zhuzhou 412007 Peoples R China;

    Wuhan Univ Sch Printing &

    Packaging Lab Printable Funct Nanomat &

    Printed Elect Wuhan 430072 Hubei Peoples R China;

    Changsha Univ Hunan Key Lab Appl Environm Photocatalysis 98 Hongshan Rd Changsha 410022 Hunan Peoples R China;

    Changsha Univ Hunan Key Lab Appl Environm Photocatalysis 98 Hongshan Rd Changsha 410022 Hunan Peoples R China;

    Changsha Univ Hunan Key Lab Appl Environm Photocatalysis 98 Hongshan Rd Changsha 410022 Hunan Peoples R China;

    Changsha Univ Hunan Key Lab Appl Environm Photocatalysis 98 Hongshan Rd Changsha 410022 Hunan Peoples R China;

    Hunan Univ Technol Natl &

    Local Joint Engn Res Ctr Adv Packaging Mat Zhuzhou 412007 Peoples R China;

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  • 正文语种 eng
  • 中图分类 晶体学;
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