废弃膨润土制备碳纳米材料及其吸附性能
Preparation of carbon nanomaterials by abandoned bentonite and the study of its adsorption properties
查看参考文献16篇
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文摘
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将吸附结晶紫后的废弃膨润土在氮气保护下600 ℃加热3 h,用HF和HCl 洗掉其中的膨润土片层, 得到了一种新型碳纳米材料.对碳材料进行了XRD、TEM、N_2吸附-脱附表征,研究结果显示,该材料石墨化程度较高,其2θ 角在26.1°处有明显的峰衍射,接近于石墨烯在26.48°的峰; TEM 表征结果显示碳材料为薄层皱褶结构.N_2-BET 测得所制材料比表面积为77.6 m~2·g~(-1).对比了该碳材料和十六烷基三甲基溴化铵(CTMAB)改性膨润土以及减电荷四甲基氯化铵(TMA)改性膨润土常温下吸附硝基苯的效果,发现该材料对硝基苯吸附效果远胜于两种改性膨润土.吸附热力学实验显示吸附过程为放热和熵减少的自发过程. |
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其他语种文摘
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A new carbon nanomaterials was prepared by bentonite which montmorillonite slice have been removed by HF and HCl after adsorbing crystal violet completely and then heated in tubular furnace at 600 ℃. The X-ray diffraction indicate that the most characteristic XRD peaks is at 26. 1°, similar to the graghene,which confirm this nanomaterials have a high degree of graphitization at 26. 48°. TEM characterization results show that the structure of the carbon material is thin folds. Simultaneously, super purity of this materials could be confirmed by absent of other strong diffraction peak. The specific surface area (SSA) of this nanomaterials is 77. 6 m~2·g~(- 1) by using N_2-adsorption-desorption. The adsorption capacity to nitrobenzene of this nanomaterials is much better than other two modified bentonite after contrast to the CTMAB-bentonite and less charge TMAbentonite. The thermodynamic experiment confirm that this adsorption is spontaneous with the characteristic of exothermic reaction and entropy reduction. |
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来源
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环境化学
,2014,33(11):1936-1940 【核心库】
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关键词
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膨润土
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结晶紫
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碳化
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硝基苯
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吸附
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地址
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1.
湘潭大学环境工程系, 湘潭, 411105
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中国科学院广州地球化学研究所, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0254-6108 |
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基金
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国家自然科学基金
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中国科学院“百人计划”项目
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文献收藏号
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CSCD:5292505
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参考文献 共
16
共1页
|
|
1.
Ay'ari F. Retention of lead from an aqueous solution by use of bentonite as adsorbent for reducing leaching from industrial effluents.
Desalination,2007,206(1):270-278
|
被引
8
次
|
|
|
|
|
2.
赵珊茸.
结晶学及矿物学,2004
|
被引
30
次
|
|
|
|
|
3.
Gupta V K. Application of low-cost adsorbents for dye removal-A review.
Journal of Environmental Management,2009,90:2313-2342
|
被引
93
次
|
|
|
|
|
4.
Almeida C A P. Removal of methylene blue from colored euents by adsorption on montmorillonite clay.
Journal of Colloid and Interface Science,2009,332:46-53
|
被引
21
次
|
|
|
|
|
5.
何玉凤. 膨润土基共聚复合物的制备及对亚甲基蓝的脱色性能.
环境化学,2013,32(8):1554-1559
|
被引
6
次
|
|
|
|
|
6.
Bakandritsos A. High surface area montmorillonite-carbon composites and derived carbons.
Chem Mater,2004,16:1551-1559
|
被引
14
次
|
|
|
|
|
7.
赵俊波.
膨润土层间域结构及其吸附性能研究. 硕士学位论文,2013:13-24
|
被引
1
次
|
|
|
|
|
8.
Chen B L. Partition of polycyclic aromatic hydrocarbons on organoben-tonites from water.
Journal of Environmental Sciences,2001,13(2):129-136
|
被引
5
次
|
|
|
|
|
9.
Zhu R L. Structure of surfactant-clay complexes and their sorptive characteristics toward HOCs.
Separation and Purification Technology,2008,63:156-162
|
被引
3
次
|
|
|
|
|
10.
Zhu L F. Surface structure of CTMA~+ modified bentonite and their sorptive characteristics towards organic compounds.
Colloids and Surfaces A,2008,320(1/3):19-24
|
被引
7
次
|
|
|
|
|
11.
曹晓燕. 人工海水介质中CTAB在胶州湾沉积物上的吸附动力学和热力学行为.
中国海洋大学学报:自然科学版,2010,40(11):101-107
|
被引
3
次
|
|
|
|
|
12.
张继义. 小麦秸秆对Cr(Ⅵ)的吸附特性及动力学,热力学分析.
环境科学研究,2010,23(12):1546-1552
|
被引
50
次
|
|
|
|
|
13.
Khan A Y. The effect of UV irradiationonadsorptionby activated carbon /TiO_2 composites.
Lettersto theEditor Carbon,2006,44:158-193
|
被引
1
次
|
|
|
|
|
14.
杨全红. 二次炭化对PAN-ACF结构和性能的影响.
离子交换与吸附,1999,15(5):385-390
|
被引
9
次
|
|
|
|
|
15.
Zaghouane-Boudiaf H. Treatment of 2,4,5-trichlorophenol by MgAl-SDBS organo-layered double hydroxides:Kinetic and equilibrium studies.
Chemical Engineering Journal,2011,173(1):36-41
|
被引
10
次
|
|
|
|
|
16.
Zhang J Y. Adsorption mechannism of nitrobenzene by biological carbon sorbent prepared from wheat straw in water.
Reserach of Environmental Sciences,2012,25(3):333-339
|
被引
1
次
|
|
|
|
|
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