[Analysis of XPS in the Removal of Cr(Ⅵ) from Groundwater with rGO-nZⅥ].

X射线光电子能谱 六价铬 氢氧化物 石墨烯 材料科学 金属 环境修复 水溶液中的金属离子 化学工程 化学 无机化学 纳米技术 冶金 污染 工程类 生物 生态学
作者
Jun Dong,Liming Ren,Zifang Chi,Wenhua Hu
出处
期刊:PubMed 卷期号:37 (1): 250-5 被引量:4
链接
标识
摘要

Iron nanoparticles are widely used in heavy metal ions removal from water, but because of the characteristics of easily aggregation and transference in the groundwater, remediation effect was reduced. GO with a negative charge containing oxygen-containing functional groups on the surfaces of graphene, are widely used for the removal of heavy metal ions from water, but it has little on remediating hexavalent chromium (Cr2O2-7, CrO2-4) with negatively charged electrons. Therefore, rGO-nZⅥ was synthesized via liquid phase reduction method to overcome the aggregation and transference of FeO, changing the negative charged Cr2O2-7 or CrO2-4 to positive charged Cr3+. The material behavior characteristics of Cr(Ⅵ) removal were discussed. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to test the prepared rGO-nZⅥ. Results indicated that nZⅥ was successfully loaded on the surface of GO, and the shape of the particles was approximate ball and the granular diameter ranged from 20 to 100 nm. Removal efficiency of Cr(Ⅵ) (40 mg·L-1) from water was nearly 100% within 24 h using rGO-nZⅥ. X-ray photoelectron spectroscopy (XPS) analyses using the XPSPEAK41 program indicated that FeO firstly reduced negatively charged Cr(Ⅵ) to positively charged Cr(Ⅲ) by providing electron, then the chromium in the solution can be removed as chromium hydroxide (Cr(OH)3) by a hydrolysis precipitation process. As the reaction progress, materials charges were changing, which benefited adsorpting Cr(Ⅵ). After 24 h reaction, the residual nZⅥ loading on rGO-nZⅥ remained, which showed the potential of sequentially remediating contamination. The results showed important theoretical value and practicability.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
凡迪亚比应助Xw采纳,获得20
刚刚
gsj完成签到,获得积分10
3秒前
4秒前
5秒前
秋天完成签到,获得积分10
6秒前
淡定的惜关注了科研通微信公众号
9秒前
Zhy发布了新的文献求助10
9秒前
10秒前
蛋挞完成签到,获得积分10
12秒前
李健应助Junning采纳,获得10
14秒前
14秒前
tingting9发布了新的文献求助10
15秒前
16秒前
爆米花应助mark采纳,获得10
17秒前
17秒前
爱看文献的小恐龙完成签到,获得积分10
18秒前
小饼干完成签到 ,获得积分10
20秒前
萧瑟处完成签到 ,获得积分10
21秒前
21秒前
22秒前
孙燕应助鹤鸣采纳,获得30
23秒前
24秒前
loski发布了新的文献求助10
26秒前
随便不放假完成签到 ,获得积分10
27秒前
淡定的惜发布了新的文献求助10
29秒前
威武的亦绿完成签到,获得积分10
29秒前
木丁完成签到,获得积分10
30秒前
30秒前
33秒前
量子星尘发布了新的文献求助30
35秒前
孙燕应助成就山河采纳,获得10
36秒前
37秒前
领导范儿应助幸福大白采纳,获得30
38秒前
谓风发布了新的文献求助10
38秒前
39秒前
q1356478314应助天白采纳,获得10
39秒前
Hanni完成签到 ,获得积分10
39秒前
40秒前
yixiaolou发布了新的文献求助10
40秒前
Junning发布了新的文献求助10
41秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989406
求助须知:如何正确求助?哪些是违规求助? 3531522
关于积分的说明 11254187
捐赠科研通 3270174
什么是DOI,文献DOI怎么找? 1804901
邀请新用户注册赠送积分活动 882105
科研通“疑难数据库(出版商)”最低求助积分说明 809174