ZnS和Bi2S3共敏化钛酸盐纳米纤维的制备及其对污染物的去除
Synthesis of titanate nanofibers co-sensitized with ZnS and Bi2S3 nanocrystallites and their application on pollutants removal
摘要：
本工作描述了将钛酸盐纳米纤维（TNF）与纳米晶ZnS和Bi 2S 3半导体相结合的纳米复合材料的合成。通过水热合成和敏化的半导体纳米粒子，通过单源前体分解方法产生的TNF。ZnS和Bi_2S_3纳米粒子成功地生长到TNF的表面上，并且使用逐层或共敏化方法获得具有不同布局的Bi_2S_3-ZnS/TNF纳米复合材料。以对苯二甲酸为探针分子，通过羟基自由基的产生来评价样品的光催化性能。所有测试的样品都显示出产生这种氧化物质的光催化能力。然后，研究样品对亚甲蓝的去除。对有机染料吸附性能最好的纳米复合材料是ZnS/TNF和Bi 2S 3 ZnS/TNF。系统地研究了亚甲蓝的去除，并获得了最有前途的结果，考虑到顺序组合的吸附-光催化降解过程中使用的Bi 2S 3 ZnS/TNF粉末作为一个高度吸附剂和光催化剂材料。
英文摘要：
The synthesis of nanocomposite materials combining titanate nanofibers (TNF) with nanocrystalline ZnS and Bi2S3 semiconductors is described in this work. The TNF were produced via hydrothermal synthesis and sensitized with the semiconductor nanoparticles, through a single-source precursor decomposition method. ZnS and Bi2S3 nanoparticles were successfully grown onto the TNF's surface and Bi2S3-ZnS/TNF nanocomposite materials with different layouts were obtained using either a layer-by-layer or a co-sensitization approach. The samples' photocatalytic performance was first evaluated through the production of the hydroxyl radical using terephthalic acid as probe molecule. All the tested samples show photocatalytic ability for the production of this oxidizing species. Afterwards, the samples were investigated for the removal of methylene blue. The nanocomposite materials with best adsorption ability for the organic dye were the ZnS/TNF and Bi2S3ZnS/TNF. The removal of the methylene blue was systematically studied, and the most promising results were obtained considering a sequential combination of an adsorption-photocatalytic degradation process using the Bi2S3ZnS/TNF powder as a highly adsorbent and photocatalyst material.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
