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Ultrasonic assisted fabrication of silver tungstate encrusted polypyrrole nanocomposite for effective photocatalytic and electrocatalytic applications.
Ultrasonics Sonochemistry ( IF 8.4 ) Pub Date : 2019-12-03 , DOI: 10.1016/j.ultsonch.2019.104913
Abinaya Manickavasagan , Rajakumaran Ramachandran , Shen-Ming Chen , Muthuraj Velluchamy

Ultrasonication is an emerging and evergreen technique for the efficient synthesis of the catalytically active heterostructured materials. In-situ one-pot ultrasonic-assisted synthesis method was demonstrated in this work for the fabrication of silver tungstate encrusted polypyrrole nanocomposite using semi-automatic ultrasonic probe maintained at 34°C/50 kHz ultrasonic frequency and at 150 W ultrasonic power. This material retains enhanced optical, electrical, morphological properties, photocatalytic behavior in photodegradation of congo red dye, tetracycline drug and its electrochemical sensing potential for the effective determination of a broad spectrum of antibacterial drug, nitrofurazone. Optical properties were investigated using UltraViolet-Visible diffuse reflectance spectral (UV-VIS DRS) data along with Tauc's bandgap energy calculations. The morphological properties were examined using FESEM and TEM micrographs. All the PXRD and XPS details prove the effective distribution of PPy on the surface of Ag2WO4 rods with the help of powerful ultrasonic assistance. PPy acted as a support for nucleation and growth of Ag2WO4 and an inhibitor of phase transformations. Ag2WO4/PPy exhibits great photocatalytic behavior while comparing with pure PPy and Ag2WO4 in the degradation of carcinogenic dye congo red and antibiotic drug tetracycline. In addition to that, Ag2WO4/PPy modified GCE exposed a widespread linear range from 0.1 to 107 µM along with a very low detection limit of 12 nM and huge sensitivity of 1.74 µA µM-1cm-2 in the electrochemical determination of nitrofurazone.

中文翻译:

超声辅助制备钨酸银包裹的聚吡咯纳米复合材料,以进行有效的光催化和电催化应用。

超声处理是一种新兴的常绿技术,用于有效合成催化活性的异质结构材料。在这项工作中演示了原位一锅超声辅助合成方法,该方法使用维持在34°C / 50 kHz超声频率和150 W超声功率的半自动超声探针制备钨酸银包裹的聚吡咯纳米复合材料。该材料在刚果红染料,四环素药物的光降解过程中保留了增强的光学,电学,形态学特性,光催化行为及其电化学感应潜力,可有效测定各种抗菌药物硝呋喃酮。使用UltraViolet-Visible漫反射光谱(UV-VIS DRS)数据和Tauc'对光学性质进行了研究。的带隙能量计算。使用FESEM和TEM显微照片检查形态学性质。PXRD和XPS的所有细节都证明了借助强大的超声辅助,PPy在Ag2WO4棒表面上的有效分布。PPy充当Ag2WO4的成核和生长的支持物,并且是相变的抑制剂。与纯PPy和Ag2WO4相比,Ag2WO4 / PPy在致癌染料刚果红和抗生素药物四环素的降解中具有出色的光催化性能。除此之外,Ag2WO4 / PPy修饰的GCE在硝基呋喃酮的电化学测定中具有0.1至107 µM的宽线性范围,以及12 nM的极低检测限和1.74 µA µM-1cm-2的极高灵敏度。PXRD和XPS的所有细节都证明了借助强大的超声辅助,PPy在Ag2WO4棒表面上的有效分布。PPy充当Ag2WO4的成核和生长的支持物,并且是相变的抑制剂。与纯PPy和Ag2WO4相比,Ag2WO4 / PPy在致癌染料刚果红和抗生素药物四环素的降解中具有出色的光催化性能。除此之外,Ag2WO4 / PPy修饰的GCE在硝基呋喃酮的电化学测定中具有0.1至107 µM的宽线性范围,以及12 nM的极低检测限和1.74 µA µM-1cm-2的巨大灵敏度。PXRD和XPS的所有细节都证明了借助强大的超声辅助,PPy在Ag2WO4棒表面上的有效分布。PPy充当Ag2WO4的成核和生长的支持物,并且是相变的抑制剂。与纯PPy和Ag2WO4相比,Ag2WO4 / PPy在致癌染料刚果红和抗生素药物四环素的降解中具有出色的光催化性能。除此之外,Ag2WO4 / PPy修饰的GCE在硝基呋喃酮的电化学测定中具有0.1至107 µM的宽线性范围,以及12 nM的极低检测限和1.74 µA µM-1cm-2的巨大灵敏度。PPy充当Ag2WO4的成核和生长的支持物,并且是相变的抑制剂。与纯PPy和Ag2WO4相比,Ag2WO4 / PPy在致癌染料刚果红和抗生素药物四环素的降解中具有出色的光催化性能。除此之外,Ag2WO4 / PPy修饰的GCE在硝基呋喃酮的电化学测定中具有0.1至107 µM的宽线性范围,以及12 nM的极低检测限和1.74 µA µM-1cm-2的巨大灵敏度。PPy充当Ag2WO4的成核和生长的支持物,并且是相变的抑制剂。与纯PPy和Ag2WO4相比,Ag2WO4 / PPy在致癌染料刚果红和抗生素药物四环素的降解中具有出色的光催化性能。除此之外,Ag2WO4 / PPy修饰的GCE在硝呋喃酮的电化学测定中具有0.1至107 µM的宽线性范围,以及12 nM的极低检测限和1.74 µA µM-1cm-2的巨大灵敏度。
更新日期:2019-12-03
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