文献类型：期刊文献

中文题名：氨基硫脲功能化PGMA 及对金的吸附性能

英文题名：Superior Au-adsorption performance of aminothiourea-modified waste cellulosic biomass

作者：Wang, Fu-chun Zhao, Jun-mei Wang, Wan-kun Liu, Hui-zhou

第一作者：王福春

通信作者：Zhao, JM[1]

机构：[1]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：corresponding author), Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China.

年份：2018

卷号：25

期号：12

起止页码：2992-3003

外文期刊名：JOURNAL OF CENTRAL SOUTH UNIVERSITY

收录：;EI(收录号：20190206364145);WOS:【SCI-EXPANDED(收录号:WOS:000455260900013)】；

基金：Projects(51504073, 51404081, 51672275) supported by the National Natural Science Foundation of China; Project(2012CBA01202) supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology, China; Project (QianJiaoKeHe KY[2015] 433) supported by the Research Program of the Education Department of Guizhou Province, China; Project(XJG20141104) supported by the Research Program of Talented Scholars of Guizhou Institute of Technology, China

语种：中文

外文关键词：adsorption; reduction-deposition; waste cellulosic biomass; aminothiourea; gold nanoparticles

摘要：Waste cellulosic biomass obtains various applications due to low-cost and eco-benign characteristics. A general strategy is proposed for waste cellulosic biomass to be modified with dialdehyde functional groups as intermediates through periodate partial oxidation. Finally, aminothiourea-modified waste cellulosic biomass can be prepared through Schiff reaction. Waste corn stalk, cotton and paper as typical precursors, were used to prepare cellulosic biomass, abbreviated as AT-S, AT-C and AT-P, respectively, and their adsorption behaviors of Au(III) from the hydrochloric acid medium were investigated. The pseudo-second kinetics equation as well as the Langmuir isotherm equation can be used to depict the adsorption process, and the maximum adsorption capacities of Au(III) are 21.4, 19.0 and 3.28 mol/kg for AT-S, AT-C and AT-P at 298 K, respectively. The adsorption capacities of Au(III) on aminothiourea modified corn stalk (AT-S) is almost 357 times greater than that of raw corn stalk. To the best of our knowledge, AT-S has the highest adsorption capacity towards Au(III). AT-S also displays a superior separation selectivity towards Au(III) in the presence of Cu(II), Ni(II), Co(II), Pt(VI), Pd(II) and Rh(III). Furthermore, the characterization analysis of XRD, TG, SEM, TEM and FTIR confirms that AuCl4- has been reduced to elemental Au nanoparticles and deposit onto the surface of the biomass. It shows a prospect for waste corn stalk to be used to adsorb Au(III) from liquid phase and the possible fabrication of gold nanoparticles by a general adsorption process without any reductant.