本文選題：零價鋁 + 氧化膜　； 參考：《化學(xué)進(jìn)展》2017年08期

【摘要】：近年來,具有極強還原性能的零價鋁(Zero-Valent Aluminum,ZVAl)開始被應(yīng)用于水中污染物的去除,正在發(fā)展成為一種新興的水處理技術(shù)。但是,ZVAl表面被氧化形成的致密氧化層會阻礙其還原性能的發(fā)揮,成為該技術(shù)發(fā)展的限制因素。因此,全面了解ZVAl在水介質(zhì)中的表面作用機制至關(guān)重要。其實,ZVAl與水反應(yīng)產(chǎn)氫效率高,能源產(chǎn)氫領(lǐng)域的研究已相對深入。二者表面反應(yīng)過程本質(zhì)上相同,均是ZVAl失電子發(fā)生還原反應(yīng),最大的不同是電子的轉(zhuǎn)移目標(biāo)分別為水介質(zhì)中的污染物和水介質(zhì)本身。為克服表面氧化膜的限制,兩大領(lǐng)域的學(xué)者們通過酸或堿溶解膜、機械球磨或合金化破壞膜、構(gòu)筑電子通道形成可用膜、熱處理改變氧化膜相組成等方法來處理表面膜從而提高ZVAl的反應(yīng)活性。此外,ZVAl的外界水介質(zhì)環(huán)境(包括溫度、壓力、水中存在的微量離子和有機酸、(氫)氧化物等)對ZVAl表面作用也存在顯著的影響。因此,本文從氧化膜的形成、溶解、破壞、轉(zhuǎn)變以及外界環(huán)境對氧化膜的影響角度出發(fā),就目前國內(nèi)外ZVAl在污染物去除和鋁水反應(yīng)產(chǎn)氫的表面作用機制方面的研究進(jìn)展進(jìn)行了綜述和展望,以期促進(jìn)ZVAl在兩大領(lǐng)域應(yīng)用的相互借鑒與共同發(fā)展。
[Abstract]:In recent years, Zero-Valent aluminum (Zero-Valent) ZVAlhas been applied to the removal of pollutants in water and is becoming a new water treatment technology. However, the dense oxide layer formed by oxidation on ZVAl surface will hinder its reduction performance and become a limiting factor for the development of the technology. Therefore, it is very important to fully understand the surface action mechanism of ZVAl in water medium. In fact, the hydrogen production efficiency of ZVAl reaction with water is high, and the research of energy hydrogen production field has been relatively deep. The process of surface reaction is essentially the same, which is the reduction reaction of ZVAl electron loss. The biggest difference is that the electron transfer target is the pollutant in water medium and the water medium itself. In order to overcome the limitation of the surface oxide film, the scholars in the two major fields have constructed the electronic channel to form the usable film through acid or alkali dissolution film, mechanical ball milling or alloying destruction film. The surface film was treated by heat treatment by changing the phase composition of the oxide film to improve the reactive activity of ZVAl. In addition, the external water environment of ZVAl (including temperature, pressure, trace ions in water and organic acid (hydrogen) oxides, etc.) also has a significant effect on the surface action of ZVAl. Therefore, in this paper, the formation of oxide film, dissolution, destruction, transformation and the impact of the external environment on the oxide film, The research progress of ZVAl in pollutant removal and hydrogen production mechanism of Aluminum-water reaction at home and abroad is reviewed and prospected in order to promote the mutual reference and common development of ZVAl application in the two fields.
【作者單位】： 海洋環(huán)境與生態(tài)教育部重點實驗室;山東省海洋環(huán)境地質(zhì)工程重點實驗室;中國海洋大學(xué)環(huán)境科學(xué)與工程學(xué)院;
【基金】：國家自然科學(xué)基金項目(No.21677135)資助~~
【分類號】：X52
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本文編號：1881931