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        外場輔助光催化機理及降解有機污染物研究進展
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        蘭州交通大學 環境與市政工程學院

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        中圖分類號:

        O643; O644; X505

        基金項目:

        甘肅省科技重大專項計劃項目(20ZD7FA005);國家自然科學基金(52060012);甘肅省科技廳自然科學基金(20JR10RA240)


        Field-assisted photocatalysis mechanism and degradationof organic pollutants: A review
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        School of Environmental and Municipal Engineering,Lanzhou Jiaotong University

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          摘要:

          光催化技術能夠利用太陽能生成自由基對有機污染物進行礦化降解,具有綠色、節能、無污染的優勢,被認為是最有前景的高級氧化技術,目前研究集中于提升光催化技術的降解效率。而采用電場、超聲場等外場輔助的方法能夠通過提高溶液傳質效率、抑制載流子復合、提高自由基產率等途徑,進一步提高光催化效率。綜述了電場、熱場、微波場、超聲場、磁場5種外場各自輔助光催化降解有機污染物的研究進展和應用現狀,重點介紹了外場提升光催化降解效率的主要機理,歸納了每種外場輔助技術的優缺點,對其在應用中面臨的問題進行總結,并對未來研究和發展方向進行了展望。

          Abstract:

          Photocatalysis can generate free radicals to degrade and mineralize organic pollutants by absorbing solar energy, which has the advantages of green, energy saving, and pollution-free. Photocatalysis is considered to be the most promising advanced oxidation technology. The current research focuses on improving the degradation efficiency of photocatalytic technology. The use of external field-assisted methods, such as electric field and ultrasonic field, can further improve the photocatalytic efficiency by improving the mass transfer efficiency of the solution, suppressing the carrier recombination, and improving the free radical yield. The research progress and application status of the five external fields assisted in photocatalytic degradation of organic pollutants are reviewed, including electric field, thermal field, microwave field, ultrasonic field and magnetic field. The main mechanism of external field to improve photocatalytic degradation efficiency is highlighted. The advantages and disadvantages are summarized, and the problems faced in practical applications are presented. The future research and development directions are prospected.

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        引用本文

        周添紅,翟天驕,王金怡,沈會棟,馬凱,張洪偉.外場輔助光催化機理及降解有機污染物研究進展[J].精細化工,2023,40(6):

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        歷史
        • 收稿日期:2022-09-20
        • 最后修改日期:2022-11-18
        • 錄用日期:2022-11-29
        • 在線發布日期: 2023-05-11
        • 出版日期:
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