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]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China;[2]King Abdulaziz Univ, Fac Sci, Chem Dept, Jeddah 21589, Saudi Arabia;[3]Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Jiangsu, Peoples R China;[4]Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Peoples R China;[5]Shaoxing Univ, Coll Yuanpei, Shaoxing 312000, Zhejiang, Peoples R China

年份：2018

卷号：258

起止页码：40

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：SCI-EXPANDED(收录号：WOS:000431932700006)、、WOS

基金：The authors greatly acknowledge the financial support by Natural Science Foundation of China (no. 21706160) and Initial Scientific Research Fund (no. 20175003) in Shaoxing University.

语种：英文

外文关键词：Graphitic-C3N4 nanosheets; Adsorption; Pb(II); Cd(II)

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 = 63, C-NaNO3 = 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 (Delta G(0) < 0, Delta H-0 > 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. (C) 2018 Elsevier B.V. All rights reserved.