热重分析
吸附
石墨烯
亚甲蓝
弗伦德利希方程
氧化物
傅里叶变换红外光谱
Zeta电位
金属有机骨架
扫描电子显微镜
材料科学
X射线光电子能谱
化学工程
核化学
无机化学
化学
纳米技术
有机化学
纳米颗粒
复合材料
光催化
催化作用
工程类
冶金
作者
Abdelazeem S. Eltaweil,Injy M. Mamdouh,Eman M. Abd El-Monaem,Gehan M. El‐Subruiti
出处
期刊:ACS omega
[American Chemical Society]
日期:2021-09-03
卷期号:6 (36): 23528-23541
被引量:85
标识
DOI:10.1021/acsomega.1c03479
摘要
Herein, we report a new metal–organic framework (MOF)-based composite beads adsorbent made via incorporating UiO-66 MOF, carboxylated graphene oxide (GOCOOH) into sodium alginate for efficient removal of methylene blue dye, and Cu2+ ions. The successful fabrication of the synthesized UiO-66/GOCOOH@SA composite beads was confirmed by means of X-ray diffraction, Fourier transform infrared, scanning electron microscopy, zeta potential, X-ray photoelectron spectroscopy analysis, and thermogravimetric analysis and BET measurement. The incorporation of both UiO-66 and GOCOOH into SA beads greatly increased their adsorption efficiency for the removal of both MB and Cu2+ with maximum adsorption capacities of 490.72 and 343.49 mg/g, respectively. The removal process of both MB and Cu2+ follows the pseudo-second-order model and Freundlich isotherm model. A plausible adsorption mechanism was discussed in detail. Regeneration tests clarified that the removal efficiencies toward both MB and Cu2+ remained higher than 87% after five cycles. These results reveal the potentiality of UiO-66/GOCOOH@SA beads as an excellent adsorbent.
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