ZnO/大孔碳复合材料的一步合成及其光催化性能(英文)  

One-Step Synthesis of Nano ZnO Decorated Macroporous Carbon with Enhanced Photocatalytic Properties

作　　者：曲玲玲[1] 韩婷婷[2] 施鹤飞 顾梦斌 罗志军[2] 

机构地区：[1]江苏大学化学化工学院,中国镇江212013 [2]江苏大学环境学院,中国镇江212013

出　　处：《湖南师范大学自然科学学报》2015年第5期48-52,58,共6页Journal of Natural Science of Hunan Normal University

基　　金：江苏省自然科学基金资助项目(BK2012716,BK20130485);江苏省高校自然科学基金资助项目(12KJD150003);江苏大学高级人才启动基金资助项目(12JDG052)

摘　　要：以硝酸锌和葡萄糖酸钠为原料,通过一步法合成纳米ZnO/大孔碳复合材料.葡萄糖酸钠不同官能团之间的协同作用在ZnO/大孔碳复合材料的生成过程中起到了重要作用.利用XRD,SEM,TEM,Raman和TGA对产品的物相、形貌和结构进行了表征.以亚甲基蓝(MB)为探针分子考察ZnO/大孔碳复合材料的光催化活性,结果表明,与商用ZnO粉末相比,ZnO/大孔碳复合材料具有更好的光催化活性.ZnO/大孔碳复合材料具有较高催化活性的可能原因是多孔碳具有优良的接受和传导电子性能,抑制了ZnO光生电子-空穴的复合几率,从而提高了光催化活性.Nano ZnO particles decorated macroporous carbon（ ZnO / MPC） have been synthesized by a facile one-step method with the precursor Zn（ NO3）2. 6H2O and sodium gluconate. The different functional groups of sodium gluconate play synergetic roles in the formation process of ZnO / MPC. The nanosturctures of ZnO nanoparticles attached to the carbon wall of macropores were confirmed by X-ray powder diffraction（ XRD）,scanning electron microscopy（ SEM） and transmission electron microscopy（ TEM）,Raman spectroscopy and thermogravimetric analysis（ TGA）. Compared with commercial ZnO powder,enormous enhancement of photocatalytic efficiency was observed by nano ZnO decorated MPC.Via the photoluminescence（ PL） investigation,the enhancement of photocatalytic activity was attributed to the high migration efficiency of photo-induced electrons and the inhibited charge carriers recombination due to the electronic interaction between ZnO and MPC.

关 键 词：大孔碳 氧化锌 光催化剂 复合物 

分 类 号：O643.3[理学—物理化学]