Biotemplated preparation of CdS nanoparticles/bacterial cellulose hybrid nanofibers for photocatalysis application.
Biotemplated preparation of CdS nanoparticles/bacterial cellulose hybrid nanofibers for photocatalysis application.
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DOI：
10.1016/j.jhazmat.2011.02.048
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发表时间：
2011-05
影响因子：
13.6
通讯作者：
Jiazhi Yang;Junwei Yu;Jun Fan;Dongping Sun;Weihua Tang;Xuejie Yang
中科院分区：
文献类型：
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作者：
Jiazhi Yang;Junwei Yu;Jun Fan;Dongping Sun;Weihua Tang;Xuejie Yang
在这项工作中，我们描述了一种新颖的简便有效的策略，通过将 CdS 纳米颗粒沉积到水合细菌纤维素纳米纤维（BCF）的基材上来制备微米长的混合纳米纤维。六方相 CdS 纳米晶体是通过 CdCl2 和硫脲在相对较低的温度下进行简单的水热反应获得的。通过透射电子显微镜（TEM）、X射线衍射（XRD）、热重分析（TGA）、紫外可见吸收光谱（UV-vis）和X射线光电子能谱（XPS）对制备的原始BCF和CdS/BCF杂化纳米纤维进行了表征。结果表明，CdS 纳米颗粒均匀沉积在 BCF 表面，并通过配位效应稳定。 CdS/BCF杂化纳米纤维表现出高效光催化作用，90分钟照射后甲基橙（MO）降解率达到82%，并且具有良好的可回收性。结果表明，CdS/BCF 混合纳米纤维是有前途的候选强可见光响应光催化剂。
In this work, we describe a novel facile and effective strategy to prepare micrometer-long hybrid nanofibers by deposition of CdS nanoparticles onto the substrate of hydrated bacterial cellulose nanofibers (BCF). Hexagonal phase CdS nanocrystals were achieved via a simple hydrothermal reaction between CdCl2and thiourea at relatively low temperature. The prepared pristine BCF and the CdS/BCF hybrid nanofibers were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), UV–vis absorption spectroscopy (UV–vis), and X-ray photoelectron spectroscopy (XPS). The results reveal that the CdS nanoparticles were homogeneously deposited on the BCF surface and stabilized via coordination effect. The CdS/BCF hybrid nanofibers demonstrated high-efficiency photocatalysis with 82% methyl orange (MO) degradation after 90min irradiation and good recyclability. The results indicate that the CdS/BCF hybrid nanofibers are promising candidate as robust visible light responsive photocatalysts.