【摘要】 以NaOH、尿素为沉淀剂,Cu（NO₃）₂·3H₂O为铜源,采用水热法控制合成了一种纺锤状CuO微结构。采用XRD、SEM、TEM和HRTEM等手段对产物进行了表征和分析,结果表明该CuO呈单斜晶相且具有很高的结晶性。研究了反应体系p H值、尿素浓度、反应温度、反应时间等因素对CuO形貌的影响,结果表明改变NaOH与尿素的相对浓度能显著调变CuO的形貌,使其呈现出空心微球、花状以及纺锤状等结构。提出了纺锤状CuO微结构可能的生长机理。更多还原

【Abstract】 Spindle-like CuO micro-sized structures were hydrothermally synthesized using Na OH,urea as precipitant and Cu（ NO₃）₂·3H₂O as copper source. The prepared samples were characterized and analyzed by means of XRD,SEM,TEM and HRTEM. The results indicate that the spindle-like CuO exhibited monoclinic phase with high crystallinity. The influence of p H,urea concentration,reaction temperature and reaction time on the growth behavior of CuO was investigated in detail,the results show that the morphology of CuO could be altered by adjusting the relative concentration of Na OH and urea,and thus micro-sized hollow spheres,flower-like structures and spindle-like CuO structures could be obtained. Possible growth mechanism of the spindle-like CuO micro-sized structures was proposed.更多还原