Physica B: Condensed Matter ( IF 2.8 ) Pub Date : 2020-09-16 , DOI: 10.1016/j.physb.2020.412559 Samina Naz , Tahir Rasheed , Sayed Tayyab Raza Naqvi , Dilshad Hussain , Batool Fatima , Muhammad Najam ul Haq , Saadat Majeed , Sameera Shafi , Komal Rizwan , Muhammad Ibrahim
Heavy metals present in wastewater have adverse effect on human health particularly when the concentration increases above the standard values as recommended by World Health Organization (WHO). Many attempts have been made to remove toxic metals from water. In the present study, PVP@MnFe2O4 NPs as adsorbent material has been synthesized through simple, fast and ecofriendly sonochemical method. Modification of Fe3O4 NPs with Mn (II) and PVP enhanced surface area andimpart stability, respectively. The higher adsorption capacity for metal ions Pb2+,Cd2+, Ni2+ was achieved in the presence of Mn (II), which decreases the point of zero charge. PVP@MnFe2O4 NPswere characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectra (FT-IR). Adsorption capacity of PVP@MnFe2O4 NPs for metals ions increased by increasing the pH from 5 to 9. Adsorption rate of metal cations on the PVP@MnFe2O4 NPs was in the following order: Pb2+ > Cd2+ > Ni2+. The efficiency of Fe3 O4 NPs, MnFe2O4 NPs, and PVP@MnFe2O4 NPs was also compared. The as synthesized PVP@MnFe2O4 NPs can be used in water treatment and other environmental applications as adsorbent.
中文翻译:
聚乙烯丙基立酮修饰的锰铁氧体提示,可有效去除废水中的重金属离子
废水中存在的重金属对人体健康有不利影响,特别是当浓度增加到世界卫生组织(WHO)建议的标准值以上时。已经进行了许多尝试以从水中去除有毒金属。本研究通过简单,快速,环保的声化学方法合成了PVP @ MnFe 2 O 4 NPs作为吸附材料。用Mn(II)和PVP修饰Fe 3 O 4 NPs分别可提高表面积和赋予稳定性。在Mn(II)的存在下,金属离子Pb 2 +,Cd 2 +,Ni 2+的吸附能力更高,从而降低了零电荷点。锰铁通过扫描电子显微镜(SEM)和傅立叶变换红外光谱(FT-IR)对2 O 4 NPs进行表征。@锰铁PVP的吸附容量2 ø 4周的NP对金属离子增加了pH值增加5〜9的金属阳离子吸附率在PVP @锰铁2周ö 4的NP是按以下顺序:铅2+ >镉2+ > Ni 2+。Fe的效率3 Ô 4的NP ,锰铁2 ö 4级的NP ,和PVP @合成MnFe2O4的NP也进行了比较。作为合成的PVP @ MnFe 2 O 4 NP可作为吸附剂用于水处理和其他环境应用中。