Facile Synthesis of Fe/Cr-Codoped ZnO Nanoparticles with Excellent Adsorption Performance for Variou

来源 :中国海洋大学学报(自然科学英文版) | 被引量 : 0次 | 上传用户:kn4281
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Adsorption is an effective and low-cost method for removing antibiotics and dyes. However, it remains a challenge to prepare an adsorbent with excellent adsorption properties for both various antibiotics and dyes. Herein, Fe/Cr-codoped ZnO with high adsorption capacity and fast adsorption rate are prepared by an environmentally friendly solvothermal method. Fe/Cr-codope ZnO with a diameter of 10–20 nm exhibits superior adsorption capacities for the antibiotics of tetracycline hydrochloride (TC-HCl) (826.45 mg g-1) and tetracycline (TC) (331.01 mg g-1), and anionic dyes of methyl orange (MO) (1023.88 mg g-1), methyl blue (MB) (726.26 mg g-1) and direct red (DR) (642.25 mg g-1). Meanwhile, it presents fast adsorption rate, it only took 30 min to reach more than 90% of the equilibrium adsorption amount for TC-HCl, TC, MO, MB and DR. The adsorption process closely fitted the Lang-muir isotherm model and pseudo second-order rate equation. More importantly, simple method has been developed for separating the pollutant from the adsorbent, which not only regenerates the materials, but also completes the recovery of antibiotics and dyes, avoiding the secondary pollution. The broad-spectrum, rapid, environment-friendly and effective adsorption properties make Fe/Cr- codoped ZnO a promising adsorbent for water treatments.
其他文献
文章采用水热法合成TiO2,以钛酸四丁酯和乙醇为原料,研究水热温度对TiO2形貌的影响,通过SEM以及XRD表征得到:在110℃水热时,TiO2形貌最好,衍射峰最强.还通过实验研究了可见光
稀土在苹果生产中的应用苹果施用稀土不仅能提高产量,而且对果品的色泽、风味、耐贮性,促进生长和外观都有良好的作用。1苹果施用稀土的方法苹果树施用稀土的方法,主要是叶面喷施
该项在广西昌墩农场生产开发性试种获得成功,对大面积开发忙果生产起到了良好的示范作用。共试种56亩,其中品种适应性试验3亩,品种10个,结果印度忙901定植后第6年结果株率达IOO%,平
通过综合应用麦氏理论和目前国内公认的缓和曲线评价准则,对比研究了几种缓和曲线,指出赵氏缓和曲线是一种优良的缓和曲线,可在高等级公路的测设中推广应用。 Through the comb
会议
张兴斌先生是德艺双馨的书法大家。1923年生,陕西渭南市人。早年参加党的地下活动,解放后,曾任渭南文工团团长、陕西日报美术图片组组长。他自幼酷爱书法,继承传统,学创兼长