Adsorptive removal of ibuprofen and diclofenac from water using metal-crossMark organic framework-derived porous carbon
Adsorptive removal of ibuprofen and diclofenac from water using metal-crossMark organic framework-derived porous carbon
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DOI：
10.1016/j.cej.2016.12.127
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发表时间：
2017-04-15
影响因子：
15.1
通讯作者：
Jhung, Sung Hwa
中科院分区：
文献类型：
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作者：
Bhadra, Biswa Nath;Ahmed, Imteaz;Jhung, Sung Hwa
为了制备由金属有机骨架(PCDM5)衍生的多孔炭，在不同的温度(800、1000和1200℃)下对金属有机骨架(MOF)(这里是分子筛-咪唑骨架-8)进行了热解。研究了PCDM5对布洛芬(IBP)和双氯芬酸钠(DCF)水溶液的吸附性能，并与纯MOF和商业活性碳(AC)的吸附性能进行了比较。在所测试的吸附剂中，在1000℃下制备的PCDM(PCDM-1000)被发现是IBP和DCF的最佳候选者。PCDM-1000对IBP(320 mg/g)和DCF(400 mg/g)的最大吸附容量分别接近AC的3倍和5倍。根据溶液pH对PCDM的Zeta电位、IBP和DCF的吸附量以及在PCDM-1000表面产生的官能团的影响，提出了相互作用的机理，如氢键(PCDM给氢键，IBP或DCF接受氢键)。最后确定PCDM-1000是一种高效、可回收的吸附剂，在净水中具有潜在的应用前景。
A metal-organic framework (MOF) (here, zeolitic-imidazolate framework-8) was pyrolyzed at different temperatures (800, 1000, and 1200 degrees C) in order to prepare porous carbons derived from MOF (PCDM5). Adsorption of ibuprofen (IBP) and diclofenac sodium (DCF) from aqueous solutions was carried out over the produced PCDM5 and compared With that over pristine MOF and commercial activated carbon (AC). Among the tested adsorbents, the PCDM prepared at 1000 C (PCDM-1000) was found to be the best candidate for both IBP and DCF. The maximum adsorption capacities of IBP (320 mg/g) and DCF (400 mg/g) over PCDM-1000 were similar to 3 and similar to 5 times, respectively, of that of AC. Interaction mechanisms such as H bonding (H-donation from PCDM, H-acceptance from IBP or DCF) were suggested based on the effect of solution pH on the zeta potential of PCDM and the adsorbed quantity of IBP and DCF along with functional groups created on the surface of PCDM-1000. Finally, PCDM-1000 was confirmed to be as a highly efficient and recyclable adsorbent having potential applications in water purification.