【作者】 张庆刚； 吴文婷； 吴明铂；

【Author】 Qinggang Zhang;Wenting Wu;Mingbo Wu;School of Chemical Engineering,China University of Petroleum;

【机构】 中国石油大学(华东)化学工程学院；

【摘要】 碳量子点(CQDs)作为一种新型纳米碳材料,具有光致发光可调性,水溶性好,毒性低,光催化性能优异等优良性质,引起了科学家们的广泛青睐[1]。本文分别以EDTA钠盐和EDTA锌盐为原料通过一步热解法制备了EDTA盐类的碳量子点(E-CQDs)和金属锌掺杂的碳量子点(Zn-CQDs)[2]。在可见光照射下,以两种碳量子点作为光催化剂用于催化降解1,4-二氢吡啶(1,4-DHP),考察了碳量子点的催化性能。结果表明,金属锌的掺杂增强了光催化剂的电子传输能力。Zn-CQDs的催化效果明显比E-CQDs的催化效果好,350℃下制备的Zn-CQDs有着最高的催化产率,在水溶液体系下,催化产率达到93.39%,而E-CQDs的仅为38.8%。更多还原

【Abstract】 Carbon quantum dots(CQDs), as a new type of nano carbon materials, have excellent properties, such as photoluminescence, water solubility, low toxicity, excellent photocatalytic properties, and so on, which have attracted wide attention of scientists. Carbon quantum dots(E-CQDs) and metal zinc doped carbon quantum dots(Zn-CQDs) were synthesized by one-step pyrolysis using EDTA sodium salt and EDTA zinc salt as raw materials, respectively. Under visible light irradiation, carbon quantum dots were used as photocatalyst to catalyze the degradation of 1, 4-DHP, and the catalytic properties of carbon quantum dots were investigated. The results show that the metal zinc doped carbon quantum dots increase the electron transfer capability of photocatalyst. The catalytic effect of Zn-CQDs was better than that of E-CQDs. Zn-CQDs synthesized at 350 o had the highest catalytic yield for 93.39%,but the yield of E-CQDs only reached to 38.8% in the aqueous solution.更多还原