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SnO2-NiO-IrO2/Ti的制備及電催化氧化甲基橙溶液的研究
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作者單位:

1.福建電力職業(yè)技術(shù)學(xué)院;2.國(guó)網(wǎng)福建省電力有限公司莆田供電公司;3.福州大學(xué)材料科學(xué)與工程學(xué)院

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中圖分類(lèi)號(hào):

TM531

基金項(xiàng)目:

福建省自然科學(xué)基金項(xiàng)目


Study on the Electrocatalytic Oxidation of Methyl Orange Solution by the SnO2-NiO-IrO2/Ti electrode
Author:
Affiliation:

1.Fujian Electric Power Technical College;2.Putian Power Supply Company of State Grid Fujian Electric Power Co. Ltd.;3.College of Materials Science and Engineering, Fuzhou University

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    摘要:

    因SnO2-NiO特殊的異質(zhì)結(jié)結(jié)構(gòu),被用作氣敏材料和超級(jí)電容器電極添加材料,在電催化氧化污水方面研究較少。本文通過(guò)添加活性氧化物IrO2提高其導(dǎo)電性來(lái)研究SnO2-NiO-IrO2電極電催化甲基橙溶液的效果。熱分解法制備不同IrO2含量的Ti/SnO2-NiO-IrO2電極,采用X射線衍射(XRD)、掃描電鏡(SEM)、X射線光電子能譜(XPS)、比表面(BET)、循環(huán)伏安法(CV)、交流阻抗譜法(EIS)、極化曲線(LSV)、總有機(jī)碳(TOC)、紫外可見(jiàn)光譜(UV)、強(qiáng)化壽命等方法系統(tǒng)研究Ti/SnO2-NiO-IrO2電極的電催化性能。結(jié)果表明:IrO2改變SnO2晶格中氧空位的濃度,使SnO2晶體結(jié)構(gòu)中產(chǎn)生雜質(zhì)缺陷,細(xì)化晶粒,進(jìn)而增大復(fù)合氧化物涂層的比表面積和導(dǎo)電性,提高活性自由基向內(nèi)層擴(kuò)散的速度,從而優(yōu)化電極的催化活性和穩(wěn)定性。IrO2摻雜量為23.1%的電極對(duì)甲基橙具有最好的降解效果。IrO2摻雜量為23.1%時(shí),電極對(duì)甲基橙具有最高降解率為93%,電解反應(yīng)累加時(shí)間最高可達(dá)678 h。

    Abstract:

    Because of the special heterojunction structure, SnO2-NiO has been used as gas sensing material and supercapacitor electrode addition material.But it has been studied less in electrocatalytic oxidation of industrial wastewater. The effect of SnO2-NiO-IrO2 electrode on the electrocatalytic methyl orange solution was studied by adding active oxide IrO2. SnO2-NiO-IrO2/Ti electrodes were prepared by thermal decomposition method. SEM, XRD, XPS, BET, CV, EIS, LSV, TOC, UV, and strongthen life were used to test the microstructure and the catalytic performance.It’s shown that IrO2 changeg the concentration of oxygen vacancies in the SnO2 lattice, resulting in forming the impurity defects in the crystal structure, refining the grains, and then increasing the specific surface area and conductivity of the composite oxide coatings. The diffusion rate of the active matter to the inner layer was increased too. Thus, the catalytic activity and stability of the electrode were optimized.The electrode with IrO2 content of 23.1% had the best degradation effect on methyl orange, which had a maximum degradation rate of 93% and a maximum service life of 678 hs.

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引用本文

黃少敏,莊建煌,邵艷群,張燕斌. SnO2-NiO-IrO2/Ti的制備及電催化氧化甲基橙溶液的研究[J].稀有金屬材料與工程,2022,51(2):516~524.[Huang Shaomin, Zhuang jianhuang, Shao Yanqun, Zhang Yanbin. Study on the Electrocatalytic Oxidation of Methyl Orange Solution by the SnO2-NiO-IrO2/Ti electrode[J]. Rare Metal Materials and Engineering,2022,51(2):516~524.]
DOI:10.12442/j. issn.1002-185X.20210118

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歷史
  • 收稿日期:2021-02-07
  • 最后修改日期:2021-05-27
  • 錄用日期:2021-06-21
  • 在線發(fā)布日期: 2022-03-09
  • 出版日期: 2022-02-28