Silver infusion: Enhancing physical and photocatalytic properties of titanium dioxide nanofibers

被引：2

作者：

Qamar, Zahid ^{[1
]}

Farooq, Umar ^{[2
]}

Abbasi, Muhammad Ali ^{[1
]}

Rizwan, Muhammad ^{[1
]}

Ahmed, Abdullah A. A. ^{[3
,4
]}

Atif, Muhammad ^{[1
]}

Parak, Wolfgang J. ^{[4
]}

Ali, Zulqurnain ^{[1
]}

Khalid, Waqas ^{[1
]}

机构：

[1] Air Univ, Dept Phys, Funct Mat Lab, Smart Surfaces & Mat Grp, PAF Complex, Islamabad, Pakistan

[2] Univ Napoli Federico II, Phys Dept, I-80126 Naples, Italy

[3] Thamar Univ, Fac Appl Sci, Phys Dept, 87246, Dhamar, Yemen

[4] Univ Hamburg, CHyN, Fachbereich Phys, D-22761 Hamburg, Germany

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2024年 / 184卷

关键词：

Congo red; Anatase and rutile phase; Photocatalysis; PHASE-TRANSFORMATION; ORGANIC POLLUTANTS; MESOPOROUS TIO2; DEGRADATION; DYE; PHOTODEGRADATION; OXIDATION; WATER; DECOLORIZATION; COMPOSITES;

D O I：

10.1016/j.jpcs.2023.111672

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report here titanium dioxide (TiO2) and silver-doped titanium dioxide (Ag/TiO2) nanofibers in a polyvinyl pyrrolidone (PVP) matrix. The unique hygroscopic nature of PVP enabled better networking of ethanol-dissolved precursors. X-ray diffraction (XRD) and RAMAN spectroscopy were used to study the phase transformation of the TiO2 nanofibers due to doping, while field emission scanning electron microscopy (FE-SEM) provided the surface morphology. The Ag/TiO2 nanofibers transformed from anatase to rutile phase, resulting in better conductive and photocatalytic properties. Dielectric studies suggested phase transformation related charge delocalization and enhanced mobility with increasing Ag content. The photocatalytic properties of the Ag/TiO2 nanofibers were observed via degradation of Congo Red (CR). The increasing Ag content and conversion to the rutile phase enhanced the degradation efficiency from 36 to 92% under Ultra-violet (UV)-light irradiation.

引用

页数：9

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