[1]傅炳鑫,王宇慧,郭红梅,等.GO/APT复合材料对水中Cd(II)的吸附研究[J].江西师范大学学报(自然科学版),2020,(06):567-572.[doi:10.16357/j.cnki.issn1000-5862.2020.06.03]
 FU Bingxin,WANG Yuhui,GUO Hongmei,et al.The Adsorption of Aqueous Cd(II)on the GO/APT Composites[J].Journal of Jiangxi Normal University:Natural Science Edition,2020,(06):567-572.[doi:10.16357/j.cnki.issn1000-5862.2020.06.03]
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GO/APT复合材料对水中Cd(II)的吸附研究()
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《江西师范大学学报》(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年06期
页码:
567-572
栏目:
化学与环境科学
出版日期:
2020-12-20

文章信息/Info

Title:
The Adsorption of Aqueous Cd(II)on the GO/APT Composites
文章编号:
1000-5862(2020)06-00567-06
作者:
傅炳鑫王宇慧郭红梅张小亮*
江西师范大学化学化工学院,江西 南昌 330022
Author(s):
FU BingxinWANG YuhuiGUO HongmeiZHANG Xiaoliang*
College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang Jiangxi 330022,China
关键词:
氧化石墨烯 凹凸棒土 吸附 Cd(II)
Keywords:
graphene oxide attapulgite adsorption cadmium(II)
分类号:
O 642
DOI:
10.16357/j.cnki.issn1000-5862.2020.06.03
文献标志码:
A
摘要:
将氧化石墨烯(GO)与凹凸棒土(APT)通过插层化学的方法制备了氧化石墨烯/凹凸棒土(GO/APT)复合材料,并研究了其对水中Cd(II)的吸附性能,考察了pH值、温度、吸附时间和吸附剂的用量等因素对吸附性能的影响.研究结果表明:制备的GO/APT复合材料具有优异的吸附性能.在温度为298 K、pH值为7、t=24 h条件下,该复合材料对水中Cd(II)的最大吸附量为216.0 mg·g-1,其吸附等温线符合Langmuir方程、吸附过程可用准1级动力学方程描述.吸附热力学研究表明该吸附过程属于自发吸热过程.与纯GO和APT粉末相比,GO/APT复合材料对水中的Cd(II)的吸附性能更好.
Abstract:
The graphene oxide/attapulgite(GO/APT)composites are prepared by the intercalation method between GO and APT.The adsorption behavior and properties of aqueous Cd(II)on the GO/APT composites are also investigated.The effects of pH,temperature,adsorption time and adsorbent amounts on adsorption properties are investigated in details.The results indicate that the GO/APT composites show high adsorption performance for aqueous Cd(II).The maximum adsorption capacity of Cd(II)on the GO/APT composites is obtained over 216.0 mg·g-1 under pH of 7 and adsorption time for 24 h at 298 K.The adsorption isotherm of Cd(II)on the GO/APT composites can be described better with Langmuir equation model than Freundlich model,and the pseudo-first-order kinetics equation fits well with the adsorption data.The adsorption process for Cd(II)on the GO/APT composites is an exothermic and spontaneous.Compared with pristine GO and APT powders,such the GO/APT composites can significantly improve the adsorption properties for aqueous Cd(II).

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备注/Memo

备注/Memo:
收稿日期:2020-05-21
基金项目:国家自然科学基金(21766011)和江西省教育厅科学技术研究课题(GJJ170166)资助项目.
通信作者:张小亮(1980-),男,江西峡江人,教授,博士,博士生导师,主要从事膜分离材料研究.E-mail:xlzhang@ jxnu.edu.cn
更新日期/Last Update: 2020-12-20