文献类型：期刊文献

英文题名：Impact of key geochemical parameters on the highly efficient sequestration of Pb(II) and Cd(II) in water using g-C3N4 nanosheets

作者：Liao, Qing[1]; Yan, Shunrong[1]; Linghu, Wensheng[1]; Zhu, Yuling[1]; Shen, Runpu[1]; Ye, Feng[1]; Feng, Gaofeng[1]; Dong, Lijia[1]; Asiri, Abdullah M.[2]; Marwani, Hadi M.[2]; Xu, Di[3]; Wu, Xilin[4]; Li, Xue[5]

机构：[1] College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, Zhejiang, 312000, China; [2] Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia; [3] State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, CAS, Nanjing, 210008, China; [4] College of Geography and Environmental Science, Zhejiang Normal University, Jinhua, 321004, China; [5] College of Yuanpei, Shaoxing University, Shaoxing, Zhejiang, 312000, China

年份：2018

卷号：258

起止页码：40

外文期刊名：Journal of Molecular Liquids

收录：EI(收录号：20181004857274)、Scopus(收录号：2-s2.0-85042705387)

语种：英文

外文关键词：Monolayers - Cadmium compounds - Dyes - Adsorption isotherms - Lead compounds - Nanosheets

外文摘要：Graphitic-C3N4 (g-C3N4) nanosheets were synthesized successfully and characterized by SEM, TEM, FI-TR, XRD, BET and XPS. A series of experimental results for the removal of Pb(II) and Cd(II) from wastewater were investigated. The g-C3N4 nanosheets exhibited high adsorption capacity towards Pb(II) and Cd(II), which can reach 395.54 mg/g and 206.40 mg/g at T = 333 K, pH = 6.3, CNaNO3 = 0.01 mol/L. The adsorption kinetics of Pb(II) and Cd(II) complied with the pseudo-second-order model. The Freundlich and Langmuir models were used to simulate the adsorption isotherms of Pb(II) and Cd(II), and the results revealed that the adsorption of Pb(II) on g-C3N4 nanosheets coincided with monolayer adsorption, while the Cd(II) on g-C3N4 nanosheets coincided with multilayer adsorption. The thermodynamic parameters (ΔG00 > 0) revealed that the adsorption process was a spontaneous endothermic process. The experimental results revealed that the as-prepared g-C3N4 nanosheets can be utilized as a friendly, efficient and economical adsorbent for the purification of wastewater. ? 2018 Elsevier B.V.