• <small id="srzlk"><dfn id="srzlk"></dfn></small>

    <meter id="srzlk"><menuitem id="srzlk"><del id="srzlk"></del></menuitem></meter>

    <label id="srzlk"></label>

    <small id="srzlk"><dfn id="srzlk"></dfn></small>

    <code id="srzlk"></code>

  • 云南民族大學學報(自然科學版)

    2021, v.30;No.127(03) 219-223

    [打印本頁] [關閉]
    本期目錄(Current Issue) | 過刊瀏覽(Past Issue) | 高級檢索(Advanced Search)

    Ho_2O_3/BiOBr復合光催化劑的制備及光催化性能
    Preparation and photocatalytic properties of Ho_2O_3/BiOBr composite photocatalyst

    康巧梅;王慧珍;
    KANG Qiao-mei;WANG Hui-zhen;Minnan Science and Technology Institute Fujian Normal University;

    摘要(Abstract):

    以氧化鈥、溴化鈉、五水硝酸鉍等試劑作為原材料,選用水熱法,制備Ho_2O_3/BiOBr復合光催化劑.通過紫外可見漫反射及紅外光譜分析對催化劑進行表征,考察Ho_2O_3與BiOBr的質量投配比、水熱反應時間、制備溫度及溶液pH等工藝條件對亞甲基藍溶液降解率的影響.結果表明:Ho_2O_3/BiOBr復合催化劑的能帶隙為2.59 eV;當Ho_2O_3與BiOBr的質量投配比為10%、水熱反應時間為12 h、制備溫度為160℃、亞甲基藍溶液pH=11、投加量為0.05 g,在500 W氙燈照射下時,80 min后亞甲基藍溶液降解率達95.6%.經4次的重復使用后,Ho_2O_3/BiOBr復合催化劑對亞甲基藍溶液的降解率達到81.3%.
    Ho_2O_3/BiOBr composite photocatalyst was prepared by hydrothermal method with holmium oxide, sodium bromide and bismuth nitrate pentahydrate as raw materials. Characterization of the catalyst by UV-Vis diffuse reflectance and infrared spectroscopy. The effects of mass ratio of Ho_2O_3 to BiOBr, hydrothermal reaction time, preparation temperature and solution pH on the degradation rate of methylene blue solution were investigated. The results showed that the band gap of Ho_2O_3/BiOBr composite catalyst was 2.59 eV. When the mass ratio of Ho_2O_3 to BiOBr was 10%, the hydrothermal reaction time was 12 h, the preparation temperature was 160 ℃, the pH of methylene blue solution was 11, and the dosage was 0.05 g, the degradation rate of methylene blue solution reached 95.6% after 80 minutes under 500 W xenon lamp irradiation. After four reuses, the degradation rate of methylene blue solution by Ho_2O_3/BiOBr composite catalyst reached 81.3%.

    關鍵詞(KeyWords): 水熱法;Ho_2O_3/BiOBr復合劑;亞甲基藍溶液;光催化
    hydrothermal;Ho_2O_3/BiOBr compoundingagent;MB solution;photocatalytic

    Abstract:

    Keywords:

    基金項目(Foundation): 福建省教育廳中青年科技項目(JA15636,JAT191039);; 閩南科技學院教改項目(MKJG-2018-015);; 福建省“大學生創新創業訓練計劃”項目(S201912992008)

    作者(Author): 康巧梅;王慧珍;
    KANG Qiao-mei;WANG Hui-zhen;Minnan Science and Technology Institute Fujian Normal University;

    Email:

    DOI:

    參考文獻(References):

    擴展功能
    本文信息
    服務與反饋
    本文關鍵詞相關文章
    本文作者相關文章
    中國知網
    分享
    捕鱼世界