Optical and photocatalytic properties of ZnO:Mg film grown by spray pyrolysis

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
M. Pait Ali, Aditya Rianjanu, Novalia Pertiwi, Robi Kurniawan, Resti Marlina, Eka Nurfani
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Abstract

We study the effect of high Mg impurity in ZnO film grown by spray pyrolisis for photocatalytic applications. The films were grown on the glass substrate for a very short time (10 min). As a result, pure ZnO film has a nanorice structure with a length of ~ 207 nm, as observed by scanning electron microscopy. By inserting the Mg impurity of ~ 32 at.%, the length of the particle decreased to 90 nm. However, this sample with the high Mg content still exhibits a hexagonal wurtzite structure, as shown by the X-ray diffraction pattern. It was also found that the impurity widens the optical band from 3.20 eV to 3.22 eV, possibly due to the alloying effect. Furthermore, the photocatalytic studies reveal that the ZnO exhibits high degradation efficiency under UV light. By adding Mg impurity, the degradation rate decreases by about 2.93% compared to pure ZnO. After 3 days of exposure, the ZnO and ZnO:Mg demonstrated photocatalytic activity, with a degradation efficiency of 95.33% and 94.17%, respectively. So this result is vital in developing low-cost photocatalytic materials by carefully choosing the type and concentration of doping.

喷雾热解法生长的氧化锌:镁薄膜的光学和光催化特性
我们研究了在光催化应用中通过喷雾热解法生长的氧化锌薄膜中高镁杂质的影响。薄膜在玻璃基底上生长的时间很短(10 分钟)。因此,通过扫描电子显微镜观察,纯氧化锌薄膜具有长度约为 207 纳米的纳米结构。加入约 32%的杂质镁后,颗粒长度减少到 90 纳米。然而,从 X 射线衍射图谱上看,这种高镁含量的样品仍然呈现出六方菱镁矿结构。研究还发现,杂质将光带从 3.20 eV 扩大到 3.22 eV,这可能是由于合金效应。此外,光催化研究表明,氧化锌在紫外光下具有很高的降解效率。加入杂质镁后,降解率比纯 ZnO 降低了约 2.93%。照射 3 天后,氧化锌和氧化锌:镁表现出光催化活性,降解效率分别为 95.33% 和 94.17%。因此,这一结果对于通过谨慎选择掺杂类型和浓度来开发低成本光催化材料至关重要。
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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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