Facile fabrication of Ag3VO4/attapulgite composites for highly efficient visible light-driven photodegradation towards organic dyes and tetracycline hydrochloride
Facile fabrication of Ag3VO4/attapulgite composites for highly efficient visible light-driven photodegradation towards organic dyes and tetracycline hydrochloride
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轻松制备 Ag3VO4/凹凸棒土复合材料，用于高效可见光驱动的有机染料和盐酸四环素光降解
DOI：
10.1007/s11051-017-4075-4
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发表时间：
2017-11
影响因子：
2.5
通讯作者：
Liu Xiaoheng
中科院分区：
文献类型：
--
作者：
Luo Yuting;Luo Jie;Duan Guorong;Liu Xiaoheng
一种高效的一维凹凸棒石 (ATP) 基光催化剂 Ag3VO4/ATP 纳米复合材料，通过简单的沉积沉淀方法制备，将分散良好的 Ag3VO4 纳米颗粒锚定在天然 ATP 纤维表面。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、傅里叶变换红外光谱(FT-IR)、X射线光电子能谱(XPS)和紫外-可见漫反射光谱(UV-vis DRS)研究了所制备的光催化剂的形貌、结构和光学性能。光催化实验表明，Ag3VO4/ATP纳米复合材料对罗丹明B（RhB）、甲基橙（MO）和盐酸四环素（TCH）的降解表现出增强的可见光驱动光催化活性，其中20 wt% Ag3VO4/ATP样品表现出优异的光催化性能。 N2吸附-脱附、光电流测量、电化学阻抗谱（EIS）和光致发光（PL）光谱分析表明，Ag3VO4/ATP体系中光催化活性的提高源于表面积的扩大、电荷转移的促进以及光生载流子复合的抑制。此外，还进行了自由基清除剂捕获实验和回收实验。这项工作为高效、稳定且经济高效的可见光驱动光催化剂的制造在废水处理和环境修复中的实际应用提供了新的见解。
An efficient one-dimensional attapulgite (ATP)-based photocatalyst, Ag3VO4/ATP nanocomposite, was fabricated by a facile deposition precipitation method with well-dispersed Ag3VO4nanoparticles anchored on the surface of natural ATP fibers. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and UV-visible diffused reflectance spectroscopy (UV-vis DRS) were employed to investigate the morphologies, structure, and optical property of the prepared photocatalysts. The photocatalytic experiments indicated that the Ag3VO4/ATP nanocomposites exhibited enhanced visible light-driven photocatalytic activity towards the degradation of rhodamine B (RhB), methyl orange (MO), and tetracycline hydrochloride (TCH), of which the 20 wt% Ag3VO4/ATP sample showed superb photocatalytic performance. As demonstrated by N2adsorption-desorption, photocurrent measurements, electrochemical impedance spectroscopy (EIS), and photoluminescence (PL) spectra analyses, the improved photocatalytic activity arose from the enlarged surface area, the facilitated charge transfer, and the suppressed recombination of photogenerated charge carriers in Ag3VO4/ATP system. Furthermore, radical scavengers trapping experiments and recycling tests were also conducted. This work gives a new insight into fabrication of highly efficient, stable, and cost-effective visible light-driven photocatalyst for practical application in wastewater treatment and environmental remediation.
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影响因子：
2.5
作者：
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通讯作者：
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影响因子：
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作者：
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