e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
Regular Papers
Ce Doped Germanium Dioxide Nanowires and Solar Light Photocatalytic Performance
T. WeiL. Z. PeiN. Lin
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2016 Volume 14 Pages 4-8

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Abstract

Ce doped germanium dioxide nanowires with cubic GeO2 and tetragonal CeGeO4 phases have been synthesized by the hydrothermal route using sodium dodecyl sulfate (SDS) as the surfactant. The nanowires have the length and diameter of about 20 μm and 50–200 nm, respectively. The SDS assisted growth process is proposed to explain the formation of the Ce doped germanium dioxide nanowires. Ce doped germanium dioxide nanowires is used as the photocatalyst for the photocatalytic degradation of gentian violet (GV) under solar light irradiation. The roles of the solar light irradiation time, content of the nanowires and GV concentration on the photocatalytic degradation of GV are investigated. GV can be totally degraded under solar light irradiation for 240 min using 15 mg nanowires in 10 mL GV solution with the concentration of 10 mg · L−1. The Ce doped germanium dioixde nanowires show good application potential for the removal of organic pollutants under solar light irradiation. [DOI: 10.1380/ejssnt.2016.4]

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