文献类型：期刊文献

英文题名：Highly efficient scavenging of Ni(II) by porous hexagonal boron nitride: Kinetics, thermodynamics and mechanism aspects

作者：Li, Li[1];Chang, Kaikai[1];Fang, Ping[1];Du, Kui[1];Chen, Chaogui[1];Zhou, Shaodong[2];Shen, Chao[3];Linghu, Wensheng[1];Sheng, Guodong[1];Hayat, Tasawar[4];Guo, Xiaojie[5]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Huancheng West Rd 508, Shaoxing 312000, Zhejiang, Peoples R China;[2]Zhejiang Univ, Coll Chem & Biochem Engn, Zhejiang Prov Key Lab Adv Chem Engn Manufacture T, Hangzhou 310027, Peoples R China;[3]Zhejiang Shuren Univ, Coll Biol & Environm Engn, Hangzhou 310015, Zhejiang, Peoples R China;[4]King Abdulaziz Univ, Fac Sci, Dept Math, NAAM Res Grp, Jeddah, Saudi Arabia;[5]Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China

年份：2020

卷号：521

外文期刊名：APPLIED SURFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000544626300001)、、EI(收录号：20201708556682)、Scopus(收录号：2-s2.0-85083639526)、WOS

基金：The work was supported by Zhejiang Basic Public Welfare Research project in 2018 year (LGG18B07002), and the National Natural Science Foundation of China (21777102, 21577093). We also sincerely thank the young and middle aged academic cadres from Shaoxing University.

语种：英文

外文关键词：Boron nitride; Adsorption; Nickel; Heavy metal ion; XPS

外文摘要：Intending to remove Ni(II) from wastewater, porous p-BN was employed to recovery Ni(II) by batch and X-ray photoelectron spectroscopy technique. The performances and mechanism of p-BN for Ni(II) sorption had been studied by diverse characterization technologies. The kinetic data was calculated to conform a pseudo-secondorder model, and isotherm data fitted to a Freundlich equation. We obtained a high removal rate and a high adsorption capacity. A possible mechanism can be expressed from XPS results. The surface of p-BN is B-OH/B-NH2 enriched and exhibits a weak alkalinity. When p-BN contact with Ni(II) solution, the hydroxide ions releases from the surface while there is a formation of BeO center dot center dot center dot Ni; the small group of BeO.Ni is acting with hydroxide ions, thereby forming BeO center dot center dot center dot Ni(OH)(2) and continuously adsorbs Ni(II) to form BeO center dot center dot center dot Ni(OH)ONi(OH) like as precipitated nucleus. Then, due to the interaction of hydroxyl-O with electron-deficient B, the veil-like Ni(OH)(2) generated from precipitated nucleus evenly attaches to p-BN. The bonding state of Ni(II) on p-BN by XPS spectra revealed that the process of adsorbing Ni(II) onto p-BN was chemisorption through the formation of Ni (OH)(2) and the interaction between hydroxyl-O and electron-deficient B. The analyses implied that p-BN is a promising candidate for recovery of Ni(II) from wastewater.